Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

52 files changed, 14757 insertions, 0 deletions

diff --git a/linguistic/IwyuFilter_linguistic.yaml b/linguistic/IwyuFilter_linguistic.yaml
new file mode 100644
index 000000000..07a9a54a5
--- /dev/null
+++ b/linguistic/IwyuFilter_linguistic.yaml
@@ -0,0 +1,9 @@
+---
+assumeFilename: linguistic/source/lngsvcmgr.cxx
+excludelist:
+    linguistic/source/hyphdsp.cxx:
+    # Needed for direct member access
+    - com/sun/star/linguistic2/XLinguProperties.hpp
+    linguistic/source/convdic.cxx:
+    # Actually used
+    - com/sun/star/util/XFlushListener.hpp
diff --git a/linguistic/JunitTest_linguistic_complex.mk b/linguistic/JunitTest_linguistic_complex.mk
new file mode 100644
index 000000000..9d6c82962
--- /dev/null
+++ b/linguistic/JunitTest_linguistic_complex.mk
@@ -0,0 +1,43 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file incorporates work covered by the following license notice:
+#
+#   Licensed to the Apache Software Foundation (ASF) under one or more
+#   contributor license agreements. See the NOTICE file distributed
+#   with this work for additional information regarding copyright
+#   ownership. The ASF licenses this file to you under the Apache
+#   License, Version 2.0 (the "License"); you may not use this file
+#   except in compliance with the License. You may obtain a copy of
+#   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+#
+
+$(eval $(call gb_JunitTest_JunitTest,linguistic_complex))
+
+$(eval $(call gb_JunitTest_set_defs,linguistic_complex,\
+	$$(DEFS) \
+	-Dorg.openoffice.test.arg.tdoc=$(SRCDIR)/linguistic/qa/complex/linguistic/testdocuments \
+))
+
+$(eval $(call gb_JunitTest_use_jars,linguistic_complex,\
+	OOoRunner \
+	ridl \
+	test \
+	test-tools \
+))
+
+$(eval $(call gb_JunitTest_add_sourcefiles,linguistic_complex,\
+	linguistic/qa/complex/linguistic/HangulHanjaConversion \
+	linguistic/qa/complex/linguistic/TestDocument \
+))
+
+$(eval $(call gb_JunitTest_add_classes,linguistic_complex,\
+	complex.linguistic.HangulHanjaConversion \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/linguistic/JunitTest_linguistic_unoapi.mk b/linguistic/JunitTest_linguistic_unoapi.mk
new file mode 100644
index 000000000..e67521535
--- /dev/null
+++ b/linguistic/JunitTest_linguistic_unoapi.mk
@@ -0,0 +1,24 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file incorporates work covered by the following license notice:
+#
+#   Licensed to the Apache Software Foundation (ASF) under one or more
+#   contributor license agreements. See the NOTICE file distributed
+#   with this work for additional information regarding copyright
+#   ownership. The ASF licenses this file to you under the Apache
+#   License, Version 2.0 (the "License"); you may not use this file
+#   except in compliance with the License. You may obtain a copy of
+#   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+#
+
+$(eval $(call gb_JunitTest_JunitTest,linguistic_unoapi))
+
+$(eval $(call gb_JunitTest_set_unoapi_test_defaults,linguistic_unoapi,,lng.sce,,.))
+
+# vim: set noet sw=4 ts=4:
diff --git a/linguistic/Library_lng.mk b/linguistic/Library_lng.mk
new file mode 100644
index 000000000..cff45e3a6
--- /dev/null
+++ b/linguistic/Library_lng.mk
@@ -0,0 +1,77 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file incorporates work covered by the following license notice:
+#
+#   Licensed to the Apache Software Foundation (ASF) under one or more
+#   contributor license agreements. See the NOTICE file distributed
+#   with this work for additional information regarding copyright
+#   ownership. The ASF licenses this file to you under the Apache
+#   License, Version 2.0 (the "License"); you may not use this file
+#   except in compliance with the License. You may obtain a copy of
+#   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+#
+
+$(eval $(call gb_Library_Library,lng))
+
+$(eval $(call gb_Library_set_componentfile,lng,linguistic/source/lng,services))
+
+$(eval $(call gb_Library_set_include,lng,\
+	$$(INCLUDE) \
+	-I$(SRCDIR)/linguistic/inc \
+))
+
+$(eval $(call gb_Library_use_sdk_api,lng))
+
+$(eval $(call gb_Library_add_defs,lng,\
+	-DLNG_DLLIMPLEMENTATION \
+))
+
+$(eval $(call gb_Library_use_libraries,lng,\
+	comphelper \
+	cppu \
+	cppuhelper \
+	i18nlangtag \
+	sal \
+	sax \
+	svl \
+	tl \
+	ucbhelper \
+	utl \
+	vcl \
+	xo \
+))
+
+$(eval $(call gb_Library_use_externals,lng,\
+	boost_headers \
+	icuuc \
+	icu_headers \
+))
+
+$(eval $(call gb_Library_add_exception_objects,lng,\
+	linguistic/source/convdic \
+	linguistic/source/convdiclist \
+	linguistic/source/convdicxml \
+	linguistic/source/dicimp \
+	linguistic/source/dlistimp \
+	linguistic/source/gciterator \
+	linguistic/source/hhconvdic \
+	linguistic/source/hyphdsp \
+	linguistic/source/hyphdta \
+	linguistic/source/iprcache \
+	linguistic/source/lngopt \
+	linguistic/source/lngprophelp \
+	linguistic/source/lngsvcmgr \
+	linguistic/source/misc \
+	linguistic/source/misc2 \
+	linguistic/source/spelldsp \
+	linguistic/source/spelldta \
+	linguistic/source/thesdsp \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/linguistic/Makefile b/linguistic/Makefile
new file mode 100644
index 000000000..0997e6284
--- /dev/null
+++ b/linguistic/Makefile
@@ -0,0 +1,14 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+module_directory:=$(dir $(realpath $(firstword $(MAKEFILE_LIST))))
+
+include $(module_directory)/../solenv/gbuild/partial_build.mk
+
+# vim: set noet sw=4 ts=4:
diff --git a/linguistic/Module_linguistic.mk b/linguistic/Module_linguistic.mk
new file mode 100644
index 000000000..956c1bbc2
--- /dev/null
+++ b/linguistic/Module_linguistic.mk
@@ -0,0 +1,26 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_Module_Module,linguistic))
+
+$(eval $(call gb_Module_add_targets,linguistic,\
+	Library_lng \
+))
+
+#$(eval $(call gb_Module_add_check_targets,linguistic,\
+#))
+
+$(eval $(call gb_Module_add_subsequentcheck_targets,linguistic,\
+    JunitTest_linguistic_unoapi \
+))
+
+# was disabled in old build system
+# JunitTest_linguistic_complex \
+
+# vim: set noet sw=4 ts=4:
diff --git a/linguistic/README.md b/linguistic/README.md
new file mode 100644
index 000000000..f77438a6c
--- /dev/null
+++ b/linguistic/README.md
@@ -0,0 +1,3 @@
+# Linguistics Components Manager
+
+`linguistic` module handles the registered modules for spellchecker, hyphenator and thesaurus.
diff --git a/linguistic/inc/iprcache.hxx b/linguistic/inc/iprcache.hxx
new file mode 100644
index 000000000..1bfa1eef3
--- /dev/null
+++ b/linguistic/inc/iprcache.hxx
@@ -0,0 +1,100 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_INC_IPRCACHE_HXX
+#define INCLUDED_LINGUISTIC_INC_IPRCACHE_HXX
+
+#include <cppuhelper/implbase.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/beans/XPropertyChangeListener.hpp>
+#include <com/sun/star/linguistic2/XDictionaryListEventListener.hpp>
+#include <com/sun/star/linguistic2/XSearchableDictionaryList.hpp>
+#include <com/sun/star/linguistic2/XLinguProperties.hpp>
+
+#include <rtl/ref.hxx>
+#include <i18nlangtag/lang.h>
+
+#include <set>
+#include <map>
+
+namespace linguistic
+{
+
+class SpellCache;
+
+class FlushListener final :
+    public cppu::WeakImplHelper
+    <
+        css::linguistic2::XDictionaryListEventListener,
+        css::beans::XPropertyChangeListener
+    >
+{
+    css::uno::Reference< css::linguistic2::XSearchableDictionaryList >    xDicList;
+    css::uno::Reference< css::linguistic2::XLinguProperties >             xPropSet;
+    SpellCache&                                                           mrSpellCache;
+
+    FlushListener(const FlushListener &) = delete;
+    FlushListener & operator = (const FlushListener &) = delete;
+
+public:
+    FlushListener( SpellCache& rFO ) : mrSpellCache(rFO) {}
+
+    void        SetDicList( css::uno::Reference< css::linguistic2::XSearchableDictionaryList > const &rDL );
+    void        SetPropSet( css::uno::Reference< css::linguistic2::XLinguProperties > const &rPS );
+
+    //XEventListener
+    virtual void SAL_CALL disposing( const css::lang::EventObject& rSource ) override;
+
+    // XDictionaryListEventListener
+    virtual void SAL_CALL processDictionaryListEvent( const css::linguistic2::DictionaryListEvent& rDicListEvent ) override;
+
+    // XPropertyChangeListener
+    virtual void SAL_CALL propertyChange( const css::beans::PropertyChangeEvent& rEvt ) override;
+};
+
+
+class SpellCache final
+{
+    rtl::Reference<FlushListener>  mxFlushLstnr;
+
+    typedef std::set< OUString >                  WordList_t;
+    typedef std::map< LanguageType, WordList_t >  LangWordList_t;
+    LangWordList_t  aWordLists;
+
+    SpellCache(const SpellCache &) = delete;
+    SpellCache & operator = (const SpellCache &) = delete;
+
+public:
+    SpellCache();
+    ~SpellCache();
+
+    // called from FlushListener
+    void    Flush();
+
+    void    AddWord( const OUString& rWord, LanguageType nLang );
+    bool    CheckWord( const OUString& rWord, LanguageType nLang );
+};
+
+
+}   // namespace linguistic
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/qa/complex/linguistic/HangulHanjaConversion.java b/linguistic/qa/complex/linguistic/HangulHanjaConversion.java
new file mode 100644
index 000000000..b407c4642
--- /dev/null
+++ b/linguistic/qa/complex/linguistic/HangulHanjaConversion.java
@@ -0,0 +1,344 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+package complex.linguistic;
+
+import com.sun.star.beans.PropertyValue;
+import com.sun.star.container.ElementExistException;
+import com.sun.star.container.NoSuchElementException;
+import com.sun.star.container.XNameContainer;
+import com.sun.star.i18n.TextConversionOption;
+import com.sun.star.lang.IllegalArgumentException;
+import com.sun.star.lang.Locale;
+import com.sun.star.lang.XComponent;
+import com.sun.star.lang.XEventListener;
+import com.sun.star.lang.XMultiServiceFactory;
+import com.sun.star.linguistic2.ConversionDictionaryType;
+import com.sun.star.linguistic2.ConversionDirection;
+import com.sun.star.linguistic2.XConversionDictionary;
+import com.sun.star.linguistic2.XConversionDictionaryList;
+import com.sun.star.sheet.XSpreadsheet;
+import com.sun.star.sheet.XSpreadsheetDocument;
+import com.sun.star.table.XCell;
+
+import com.sun.star.uno.UnoRuntime;
+
+
+
+import util.DesktopTools;
+
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.openoffice.test.OfficeConnection;
+import static org.junit.Assert.*;
+
+public class HangulHanjaConversion {
+    XMultiServiceFactory xMSF = null;
+    boolean disposed = false;
+    Locale aLocale = new Locale("ko", "KR", "");
+    short dictType = ConversionDictionaryType.HANGUL_HANJA;
+
+    @Before public void before() {
+        xMSF = getMSF();
+    }
+
+    @Test public void ConversionDictionaryList() {
+        Object ConversionDictionaryList = null;
+
+        try {
+            ConversionDictionaryList = xMSF.createInstance(
+                                               "com.sun.star.linguistic2.ConversionDictionaryList");
+        } catch (com.sun.star.uno.Exception e) {
+            fail("Couldn't create ConversionDictionaryList");
+        }
+
+        if (ConversionDictionaryList == null) {
+            fail("Couldn't create ConversionDictionaryList");
+        }
+
+        boolean bList = checkXConversionDictionaryList(
+                                ConversionDictionaryList);
+        assertTrue("XConversionDictionaryList doesn't work as expected", bList);
+    }
+
+    private boolean checkXConversionDictionaryList(Object list) {
+        boolean res = true;
+        XConversionDictionaryList xCList = UnoRuntime.queryInterface(XConversionDictionaryList.class, list);
+        XConversionDictionary xDict = null;
+
+        try {
+            xDict = xCList.addNewDictionary("addNewDictionary", aLocale,
+                                            dictType);
+        } catch (com.sun.star.lang.NoSupportException e) {
+            res = false;
+            fail("Couldn't add Dictionary");
+        } catch (com.sun.star.container.ElementExistException e) {
+            res = false;
+            fail("Couldn't add Dictionary");
+        }
+
+        try {
+            xCList.addNewDictionary("addNewDictionary", aLocale, dictType);
+            res = false;
+            fail("wrong exception while adding Dictionary again");
+        } catch (com.sun.star.lang.NoSupportException e) {
+            res = false;
+            fail("wrong exception while adding Dictionary again");
+        } catch (com.sun.star.container.ElementExistException e) {
+        }
+
+        boolean localRes = checkNameContainer(xCList.getDictionaryContainer());
+        res &= localRes;
+        assertTrue("getDictionaryContainer didn't work as expected", localRes);
+
+        String FileToLoad = TestDocument.getUrl("hangulhanja.sxc");
+
+XComponent xDoc = DesktopTools.loadDoc(xMSF, FileToLoad,
+                                               new PropertyValue[] {  });
+        XSpreadsheet xSheet = getSheet(xDoc);
+        boolean done = false;
+        int counter = 0;
+        String wordToCheck = "";
+        String expectedConversion = "";
+
+        while (!done) {
+            String[] HangulHanja = getLeftAndRight(counter, xSheet);
+            done = HangulHanja[0].equals("");
+            counter++;
+
+            if (!done) {
+                try {
+                    xDict.addEntry(HangulHanja[0], HangulHanja[1]);
+                    wordToCheck += HangulHanja[0];
+                    expectedConversion += HangulHanja[1];
+                } catch (com.sun.star.lang.IllegalArgumentException e) {
+                    e.printStackTrace();
+                    res = false;
+                    fail("Exception while checking adding entry");
+                } catch (com.sun.star.container.ElementExistException e) {
+                    //ignored
+                }
+            }
+        }
+
+        try {
+            xDict.addEntry(wordToCheck, expectedConversion);
+        } catch (com.sun.star.lang.IllegalArgumentException e) {
+            e.printStackTrace();
+            res = false;
+            fail("Exception while checking adding entry");
+        } catch (com.sun.star.container.ElementExistException e) {
+            //ignored
+        }
+
+        localRes = xCList.queryMaxCharCount(aLocale, dictType,
+                                            ConversionDirection.FROM_LEFT) == 42;
+        res &= localRes;
+        assertTrue("queryMaxCharCount returned the wrong value", localRes);
+
+        String[] conversion = null;
+
+        try {
+            conversion = xCList.queryConversions(wordToCheck, 0,
+                                                 wordToCheck.length(), aLocale,
+                                                 dictType,
+                                                 ConversionDirection.FROM_LEFT,
+                                                 TextConversionOption.NONE);
+        } catch (com.sun.star.lang.IllegalArgumentException e) {
+            res = false;
+            fail("Exception while calling queryConversions");
+        } catch (com.sun.star.lang.NoSupportException e) {
+            res = false;
+            fail("Exception while calling queryConversions");
+        }
+
+        localRes = conversion[0].equals(expectedConversion);
+        res &= localRes;
+        assertTrue("queryConversions didn't work as expected", localRes);
+
+        try {
+            xCList.getDictionaryContainer().removeByName("addNewDictionary");
+        } catch (com.sun.star.container.NoSuchElementException e) {
+            res = false;
+            fail("exception while removing Dictionary again");
+        } catch (com.sun.star.lang.WrappedTargetException e) {
+            res = false;
+            fail("exception while removing Dictionary again");
+        }
+
+        localRes = !xCList.getDictionaryContainer()
+                          .hasByName("addNewDictionary");
+        res &= localRes;
+        assertTrue("Dictionary hasn't been removed properly", localRes);
+
+        XComponent dicList = UnoRuntime.queryInterface(XComponent.class, xCList);
+        XEventListener listen = new EventListener();
+        dicList.addEventListener(listen);
+        dicList.dispose();
+        assertTrue("dispose didn't work", disposed);
+        dicList.removeEventListener(listen);
+
+        DesktopTools.closeDoc(xDoc);
+
+        return res;
+    }
+
+    private boolean checkNameContainer(XNameContainer xNC) {
+        boolean res = true;
+
+        try {
+            res &= xNC.hasByName("addNewDictionary");
+
+            XConversionDictionary myCD = new ConversionDictionary();
+            xNC.insertByName("insertByName", myCD);
+            res &= xNC.hasByName("insertByName");
+            xNC.removeByName("insertByName");
+            res &= !(xNC.hasByName("insertByName"));
+        } catch (com.sun.star.lang.IllegalArgumentException e) {
+            res = false;
+            e.printStackTrace();
+        } catch (com.sun.star.container.NoSuchElementException e) {
+            res = false;
+            e.printStackTrace();
+        } catch (com.sun.star.container.ElementExistException e) {
+            res = false;
+            e.printStackTrace();
+        } catch (com.sun.star.lang.WrappedTargetException e) {
+            res = false;
+            e.printStackTrace();
+        }
+
+        return res;
+    }
+
+    private XSpreadsheet getSheet(XComponent xDoc) {
+        XSpreadsheetDocument xSheetDoc = UnoRuntime.queryInterface(XSpreadsheetDocument.class, xDoc);
+        XSpreadsheet xSheet = null;
+
+        try {
+            xSheet = UnoRuntime.queryInterface(XSpreadsheet.class, xSheetDoc.getSheets().getByName(xSheetDoc.getSheets().getElementNames()[0]));
+        } catch (com.sun.star.container.NoSuchElementException e) {
+            System.out.println("Couldn't get sheet");
+            e.printStackTrace();
+        } catch (com.sun.star.lang.WrappedTargetException e) {
+            System.out.println("Couldn't get sheet");
+            e.printStackTrace();
+        }
+
+        return xSheet;
+    }
+
+    private String[] getLeftAndRight(int counter, XSpreadsheet xSpreadsheet) {
+        String[] re = new String[] {
+            getCell(0, counter, xSpreadsheet).getFormula().trim(),
+            getCell(1, counter, xSpreadsheet).getFormula().trim() };
+
+        return re;
+    }
+
+    private XCell getCell(int x, int y, XSpreadsheet xSpreadsheet) {
+        XCell re = null;
+
+        try {
+            re = xSpreadsheet.getCellByPosition(x, y);
+        } catch (com.sun.star.lang.IndexOutOfBoundsException e) {
+            System.out.println("Couldn't get word");
+            e.printStackTrace();
+        }
+
+        return re;
+    }
+
+    private class ConversionDictionary implements XConversionDictionary {
+        boolean active = false;
+
+        public void addEntry(String str, String str1)
+                      throws IllegalArgumentException, ElementExistException {
+        }
+
+        public void clear() {
+        }
+
+        public String[] getConversionEntries(ConversionDirection conversionDirection) {
+            return new String[] { "getConversionEntries" };
+        }
+
+        public short getConversionType() {
+            return ConversionDictionaryType.HANGUL_HANJA;
+        }
+
+        public String[] getConversions(String str, int param, int param2,
+                                       ConversionDirection conversionDirection,
+                                       int param4)
+                                throws IllegalArgumentException {
+            return new String[] { "getConversion" };
+        }
+
+        public com.sun.star.lang.Locale getLocale() {
+            return new Locale("de", "DE", "");
+        }
+
+        public short getMaxCharCount(ConversionDirection conversionDirection) {
+            return (short) 2;
+        }
+
+        public String getName() {
+            return "insertByName";
+        }
+
+        public boolean isActive() {
+            return active;
+        }
+
+        public void removeEntry(String str, String str1)
+                         throws NoSuchElementException {
+        }
+
+        public void setActive(boolean param) {
+            active = param;
+        }
+    }
+
+    private class EventListener implements XEventListener {
+        public void disposing(com.sun.star.lang.EventObject eventObject) {
+            disposed = true;
+        }
+    }
+
+    private XMultiServiceFactory getMSF()
+    {
+        return UnoRuntime.queryInterface(XMultiServiceFactory.class, connection.getComponentContext().getServiceManager());
+    }
+
+    // setup and close connections
+    @BeforeClass public static void setUpConnection() throws Exception {
+        System.out.println("setUpConnection()");
+        connection.setUp();
+    }
+
+    @AfterClass public static void tearDownConnection()
+        throws InterruptedException, com.sun.star.uno.Exception
+    {
+        System.out.println("tearDownConnection()");
+        connection.tearDown();
+    }
+
+    private static final OfficeConnection connection = new OfficeConnection();
+
+}
diff --git a/linguistic/qa/complex/linguistic/TestDocument.java b/linguistic/qa/complex/linguistic/TestDocument.java
new file mode 100644
index 000000000..3384fa9e7
--- /dev/null
+++ b/linguistic/qa/complex/linguistic/TestDocument.java
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+package complex.linguistic;
+
+import java.io.File;
+import org.openoffice.test.OfficeFileUrl;
+
+final class TestDocument
+{
+    public static String getUrl(String name)
+        {
+            return OfficeFileUrl.getAbsolute(new File("testdocuments", name));
+        }
+
+    private TestDocument() {}
+}
diff --git a/linguistic/qa/complex/linguistic/testdocuments/hangulhanja.sxc b/linguistic/qa/complex/linguistic/testdocuments/hangulhanja.sxc
new file mode 100644
index 000000000..823ce57d3
--- /dev/null
+++ b/linguistic/qa/complex/linguistic/testdocuments/hangulhanja.sxc
diff --git a/linguistic/qa/unoapi/knownissues.xcl b/linguistic/qa/unoapi/knownissues.xcl
new file mode 100644
index 000000000..27f9dacc1
--- /dev/null
+++ b/linguistic/qa/unoapi/knownissues.xcl
@@ -0,0 +1,27 @@
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file incorporates work covered by the following license notice:
+#
+#   Licensed to the Apache Software Foundation (ASF) under one or more
+#   contributor license agreements. See the NOTICE file distributed
+#   with this work for additional information regarding copyright
+#   ownership. The ASF licenses this file to you under the Apache
+#   License, Version 2.0 (the "License"); you may not use this file
+#   except in compliance with the License. You may obtain a copy of
+#   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+#
+
+### i84435 ##
+lng.LngSvcMgr
+#uncommented in lng.sce
+
+### i88538 ###
+lng.DicList::com::sun::star::linguistic2::XSearchableDictionaryList
+
+### i96846 ###
+lng.LinguProps::com::sun::star::linguistic2::LinguProperties
diff --git a/linguistic/qa/unoapi/lng.sce b/linguistic/qa/unoapi/lng.sce
new file mode 100644
index 000000000..fd4128438
--- /dev/null
+++ b/linguistic/qa/unoapi/lng.sce
@@ -0,0 +1,3 @@
+-o lng.DicList
+-o lng.LinguProps
+#i84435 -o lng.LngSvcMgr
diff --git a/linguistic/source/convdic.cxx b/linguistic/source/convdic.cxx
new file mode 100644
index 000000000..d2fb118b5
--- /dev/null
+++ b/linguistic/source/convdic.cxx
@@ -0,0 +1,583 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <cppuhelper/factory.hxx>
+#include <i18nlangtag/lang.h>
+#include <i18nlangtag/languagetag.hxx>
+#include <osl/mutex.hxx>
+#include <sal/log.hxx>
+#include <tools/debug.hxx>
+#include <tools/stream.hxx>
+#include <tools/urlobj.hxx>
+#include <tools/diagnose_ex.h>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/sequence.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <unotools/streamwrap.hxx>
+#include <unotools/ucbstreamhelper.hxx>
+
+#include <com/sun/star/linguistic2/ConversionPropertyType.hpp>
+#include <com/sun/star/util/XFlushable.hpp>
+#include <com/sun/star/lang/EventObject.hpp>
+#include <com/sun/star/ucb/SimpleFileAccess.hpp>
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/util/XFlushListener.hpp>
+#include <com/sun/star/io/IOException.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/xml/sax/Writer.hpp>
+#include <com/sun/star/xml/sax/InputSource.hpp>
+#include <com/sun/star/xml/sax/SAXParseException.hpp>
+#include <com/sun/star/container/NoSuchElementException.hpp>
+#include <com/sun/star/container/ElementExistException.hpp>
+
+
+#include "convdic.hxx"
+#include "convdicxml.hxx"
+#include <linguistic/misc.hxx>
+#include <utility>
+
+using namespace utl;
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+static void ReadThroughDic( const OUString &rMainURL, ConvDicXMLImport &rImport )
+{
+    if (rMainURL.isEmpty())
+        return;
+    DBG_ASSERT(!INetURLObject( rMainURL ).HasError(), "invalid URL");
+
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    // get xInputStream stream
+    uno::Reference< io::XInputStream > xIn;
+    try
+    {
+        uno::Reference< ucb::XSimpleFileAccess3 > xAccess( ucb::SimpleFileAccess::create(xContext) );
+        xIn = xAccess->openFileRead( rMainURL );
+    }
+    catch (const uno::Exception &)
+    {
+        SAL_WARN( "linguistic", "failed to get input stream" );
+    }
+    if (!xIn.is())
+        return;
+
+    // prepare ParserInputSource
+    xml::sax::InputSource aParserInput;
+    aParserInput.aInputStream = xIn;
+
+    // finally, parser the stream
+    try
+    {
+        rImport.parseStream( aParserInput );   // implicitly calls ConvDicXMLImport::CreateContext
+    }
+    catch( xml::sax::SAXParseException& )
+    {
+        TOOLS_WARN_EXCEPTION("linguistic", "");
+    }
+    catch( xml::sax::SAXException& )
+    {
+        TOOLS_WARN_EXCEPTION("linguistic", "");
+    }
+    catch( io::IOException& )
+    {
+        TOOLS_WARN_EXCEPTION("linguistic", "");
+    }
+}
+
+bool IsConvDic( const OUString &rFileURL, LanguageType &nLang, sal_Int16 &nConvType )
+{
+    bool bRes = false;
+
+    if (rFileURL.isEmpty())
+        return bRes;
+
+    // check if file extension matches CONV_DIC_EXT
+    OUString aExt;
+    sal_Int32 nPos = rFileURL.lastIndexOf( '.' );
+    if (-1 != nPos)
+        aExt = rFileURL.copy( nPos + 1 ).toAsciiLowerCase();
+    if (aExt != CONV_DIC_EXT)
+        return bRes;
+
+    // first argument being 0 should stop the file from being parsed
+    // up to the end (reading all entries) when the required
+    // data (language, conversion type) is found.
+    rtl::Reference<ConvDicXMLImport> pImport = new ConvDicXMLImport( nullptr );
+
+    ReadThroughDic( rFileURL, *pImport );    // will implicitly add the entries
+    bRes =  !LinguIsUnspecified( pImport->GetLanguage()) &&
+            pImport->GetConversionType() != -1;
+    DBG_ASSERT( bRes, "conversion dictionary corrupted?" );
+
+    if (bRes)
+    {
+        nLang       = pImport->GetLanguage();
+        nConvType   = pImport->GetConversionType();
+    }
+
+    return bRes;
+}
+
+
+ConvDic::ConvDic(
+        OUString aName_,
+        LanguageType nLang,
+        sal_Int16 nConvType,
+        bool bBiDirectional,
+        const OUString &rMainURL) :
+    aFlushListeners( GetLinguMutex() ),
+    aMainURL(rMainURL), aName(std::move(aName_)), nLanguage(nLang),
+    nConversionType(nConvType),
+    nMaxLeftCharCount(0), nMaxRightCharCount(0),
+    bMaxCharCountIsValid(true),
+    bNeedEntries(true),
+    bIsModified(false), bIsActive(false)
+
+{
+    if (bBiDirectional)
+        pFromRight.reset( new ConvMap );
+    if (nLang == LANGUAGE_CHINESE_SIMPLIFIED || nLang == LANGUAGE_CHINESE_TRADITIONAL)
+        pConvPropType.reset( new PropTypeMap );
+
+    if( !rMainURL.isEmpty() )
+    {
+        bool bExists = false;
+        IsReadOnly( rMainURL, &bExists );
+
+        if( !bExists )  // new empty dictionary
+        {
+            bNeedEntries = false;
+            //! create physical representation of an **empty** dictionary
+            //! that could be found by the dictionary-list implementation
+            // (Note: empty dictionaries are not just empty files!)
+            Save();
+        }
+    }
+    else
+    {
+        bNeedEntries = false;
+    }
+}
+
+
+ConvDic::~ConvDic()
+{
+}
+
+
+void ConvDic::Load()
+{
+    DBG_ASSERT( !bIsModified, "dictionary is modified. Really do 'Load'?" );
+
+    //!! prevent function from being called recursively via HasEntry, AddEntry
+    bNeedEntries = false;
+    rtl::Reference<ConvDicXMLImport> pImport = new ConvDicXMLImport( this );
+    ReadThroughDic( aMainURL, *pImport );    // will implicitly add the entries
+    bIsModified = false;
+}
+
+
+void ConvDic::Save()
+{
+    DBG_ASSERT( !bNeedEntries, "saving while entries missing" );
+    if (aMainURL.isEmpty() || bNeedEntries)
+        return;
+    DBG_ASSERT(!INetURLObject( aMainURL ).HasError(), "invalid URL");
+
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    // get XOutputStream stream
+    uno::Reference< io::XStream > xStream;
+    try
+    {
+        uno::Reference< ucb::XSimpleFileAccess3 > xAccess( ucb::SimpleFileAccess::create(xContext) );
+        xStream = xAccess->openFileReadWrite( aMainURL );
+    }
+    catch (const uno::Exception &)
+    {
+        SAL_WARN( "linguistic", "failed to get input stream" );
+    }
+    if (!xStream.is())
+        return;
+
+    std::unique_ptr<SvStream> pStream( utl::UcbStreamHelper::CreateStream( xStream ) );
+
+    // get XML writer
+    uno::Reference< xml::sax::XWriter > xSaxWriter = xml::sax::Writer::create(xContext);
+
+    if (xStream.is())
+    {
+        // connect XML writer to output stream
+        xSaxWriter->setOutputStream( xStream->getOutputStream() );
+
+        // prepare arguments (prepend doc handler to given arguments)
+        rtl::Reference<ConvDicXMLExport> pExport = new ConvDicXMLExport( *this, aMainURL, xSaxWriter );
+        bool bRet = pExport->Export();     // write entries to file
+        DBG_ASSERT( !pStream->GetError(), "I/O error while writing to stream" );
+        if (bRet)
+            bIsModified = false;
+    }
+    DBG_ASSERT( !bIsModified, "dictionary still modified after save. Save failed?" );
+}
+
+
+ConvMap::iterator ConvDic::GetEntry( ConvMap &rMap, const OUString &rFirstText, std::u16string_view rSecondText )
+{
+    std::pair< ConvMap::iterator, ConvMap::iterator > aRange =
+            rMap.equal_range( rFirstText );
+    ConvMap::iterator aPos = rMap.end();
+    for (ConvMap::iterator aIt = aRange.first;
+         aIt != aRange.second  &&  aPos == rMap.end();
+         ++aIt)
+    {
+        if ((*aIt).second == rSecondText)
+            aPos = aIt;
+    }
+    return aPos;
+}
+
+
+bool ConvDic::HasEntry( const OUString &rLeftText, std::u16string_view rRightText )
+{
+    if (bNeedEntries)
+        Load();
+    ConvMap::iterator aIt = GetEntry( aFromLeft, rLeftText, rRightText );
+    return aIt != aFromLeft.end();
+}
+
+
+void ConvDic::AddEntry( const OUString &rLeftText, const OUString &rRightText )
+{
+    if (bNeedEntries)
+        Load();
+
+    DBG_ASSERT(!HasEntry( rLeftText, rRightText), "entry already exists" );
+    aFromLeft .emplace( rLeftText, rRightText );
+    if (pFromRight)
+        pFromRight->emplace( rRightText, rLeftText );
+
+    if (bMaxCharCountIsValid)
+    {
+        if (rLeftText.getLength() > nMaxLeftCharCount)
+            nMaxLeftCharCount   = static_cast<sal_Int16>(rLeftText.getLength());
+        if (pFromRight && rRightText.getLength() > nMaxRightCharCount)
+            nMaxRightCharCount  = static_cast<sal_Int16>(rRightText.getLength());
+    }
+
+    bIsModified = true;
+}
+
+
+void ConvDic::RemoveEntry( const OUString &rLeftText, const OUString &rRightText )
+{
+    if (bNeedEntries)
+        Load();
+
+    ConvMap::iterator aLeftIt  = GetEntry( aFromLeft,  rLeftText,  rRightText );
+    DBG_ASSERT( aLeftIt  != aFromLeft.end(),  "left map entry missing" );
+    aFromLeft .erase( aLeftIt );
+
+    if (pFromRight)
+    {
+        ConvMap::iterator aRightIt = GetEntry( *pFromRight, rRightText, rLeftText );
+        DBG_ASSERT( aRightIt != pFromRight->end(), "right map entry missing" );
+        pFromRight->erase( aRightIt );
+    }
+
+    bIsModified = true;
+    bMaxCharCountIsValid = false;
+}
+
+
+OUString SAL_CALL ConvDic::getName(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return aName;
+}
+
+
+Locale SAL_CALL ConvDic::getLocale(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return LanguageTag::convertToLocale( nLanguage );
+}
+
+
+sal_Int16 SAL_CALL ConvDic::getConversionType(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return nConversionType;
+}
+
+
+void SAL_CALL ConvDic::setActive( sal_Bool bActivate )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    bIsActive = bActivate;
+}
+
+
+sal_Bool SAL_CALL ConvDic::isActive(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return bIsActive;
+}
+
+
+void SAL_CALL ConvDic::clear(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    aFromLeft .clear();
+    if (pFromRight)
+        pFromRight->clear();
+    bNeedEntries    = false;
+    bIsModified     = true;
+    nMaxLeftCharCount       = 0;
+    nMaxRightCharCount      = 0;
+    bMaxCharCountIsValid    = true;
+}
+
+
+uno::Sequence< OUString > SAL_CALL ConvDic::getConversions(
+        const OUString& aText,
+        sal_Int32 nStartPos,
+        sal_Int32 nLength,
+        ConversionDirection eDirection,
+        sal_Int32 /*nTextConversionOptions*/ )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!pFromRight && eDirection == ConversionDirection_FROM_RIGHT)
+        return uno::Sequence< OUString >();
+
+    if (bNeedEntries)
+        Load();
+
+    OUString aLookUpText( aText.copy(nStartPos, nLength) );
+    ConvMap &rConvMap = eDirection == ConversionDirection_FROM_LEFT ?
+                                aFromLeft : *pFromRight;
+    std::pair< ConvMap::iterator, ConvMap::iterator > aRange =
+            rConvMap.equal_range( aLookUpText );
+
+    std::vector<OUString> aRes;
+    auto nCount = static_cast<size_t>(std::distance(aRange.first, aRange.second));
+    aRes.reserve(nCount);
+
+    std::transform(aRange.first, aRange.second, std::back_inserter(aRes),
+        [](ConvMap::const_reference rEntry) { return rEntry.second; });
+
+    return comphelper::containerToSequence(aRes);
+}
+
+
+uno::Sequence< OUString > SAL_CALL ConvDic::getConversionEntries(
+        ConversionDirection eDirection )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!pFromRight && eDirection == ConversionDirection_FROM_RIGHT)
+        return uno::Sequence< OUString >();
+
+    if (bNeedEntries)
+        Load();
+
+    ConvMap &rConvMap = eDirection == ConversionDirection_FROM_LEFT ?
+                                aFromLeft : *pFromRight;
+    std::vector<OUString> aRes;
+    aRes.reserve(rConvMap.size());
+    for (auto const& elem : rConvMap)
+    {
+        OUString aCurEntry( elem.first );
+        // skip duplicate entries ( duplicate = duplicate entries
+        // respective to the evaluated side (FROM_LEFT or FROM_RIGHT).
+        // Thus if FROM_LEFT is evaluated for pairs (A,B) and (A,C)
+        // only one entry for A will be returned in the result)
+        if (std::find(aRes.begin(), aRes.end(), aCurEntry) == aRes.end())
+            aRes.push_back(aCurEntry);
+    }
+
+    return comphelper::containerToSequence(aRes);
+}
+
+
+void SAL_CALL ConvDic::addEntry(
+        const OUString& aLeftText,
+        const OUString& aRightText )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    if (bNeedEntries)
+        Load();
+    if (HasEntry( aLeftText, aRightText ))
+        throw container::ElementExistException();
+    AddEntry( aLeftText, aRightText );
+}
+
+
+void SAL_CALL ConvDic::removeEntry(
+        const OUString& aLeftText,
+        const OUString& aRightText )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    if (bNeedEntries)
+        Load();
+    if (!HasEntry( aLeftText, aRightText ))
+        throw container::NoSuchElementException();
+    RemoveEntry( aLeftText, aRightText );
+}
+
+
+sal_Int16 SAL_CALL ConvDic::getMaxCharCount( ConversionDirection eDirection )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!pFromRight && eDirection == ConversionDirection_FROM_RIGHT)
+    {
+        DBG_ASSERT( nMaxRightCharCount == 0, "max right char count should be 0" );
+        return 0;
+    }
+
+    if (bNeedEntries)
+        Load();
+
+    if (!bMaxCharCountIsValid)
+    {
+        nMaxLeftCharCount   = 0;
+        for (auto const& elem : aFromLeft)
+        {
+            sal_Int16 nTmp = static_cast<sal_Int16>(elem.first.getLength());
+            if (nTmp > nMaxLeftCharCount)
+                nMaxLeftCharCount = nTmp;
+        }
+
+        nMaxRightCharCount  = 0;
+        if (pFromRight)
+        {
+            for (auto const& elem : *pFromRight)
+            {
+                sal_Int16 nTmp = static_cast<sal_Int16>(elem.first.getLength());
+                if (nTmp > nMaxRightCharCount)
+                    nMaxRightCharCount = nTmp;
+            }
+        }
+
+        bMaxCharCountIsValid = true;
+    }
+    sal_Int16 nRes = eDirection == ConversionDirection_FROM_LEFT ?
+            nMaxLeftCharCount : nMaxRightCharCount;
+    DBG_ASSERT( nRes >= 0, "invalid MaxCharCount" );
+    return nRes;
+}
+
+
+void SAL_CALL ConvDic::setPropertyType(
+        const OUString& rLeftText,
+        const OUString& rRightText,
+        sal_Int16 nPropertyType )
+{
+    bool bHasElement = HasEntry( rLeftText, rRightText);
+    if (!bHasElement)
+        throw container::NoSuchElementException();
+
+    // currently we assume that entries with the same left text have the
+    // same PropertyType even if the right text is different...
+    if (pConvPropType)
+        pConvPropType->emplace( rLeftText, nPropertyType );
+    bIsModified = true;
+}
+
+
+sal_Int16 SAL_CALL ConvDic::getPropertyType(
+        const OUString& rLeftText,
+        const OUString& rRightText )
+{
+    bool bHasElement = HasEntry( rLeftText, rRightText);
+    if (!bHasElement)
+        throw container::NoSuchElementException();
+
+    sal_Int16 nRes = ConversionPropertyType::NOT_DEFINED;
+    if (pConvPropType)
+    {
+        // still assuming that entries with same left text have same PropertyType
+        // even if they have different right text...
+        PropTypeMap::iterator aIt = pConvPropType->find( rLeftText );
+        if (aIt != pConvPropType->end())
+            nRes = (*aIt).second;
+    }
+    return nRes;
+}
+
+
+void SAL_CALL ConvDic::flush(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bIsModified)
+        return;
+
+    Save();
+
+    // notify listeners
+    EventObject aEvtObj;
+    aEvtObj.Source = uno::Reference< XFlushable >( this );
+    aFlushListeners.notifyEach( &util::XFlushListener::flushed, aEvtObj );
+}
+
+
+void SAL_CALL ConvDic::addFlushListener(
+        const uno::Reference< util::XFlushListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    if (rxListener.is())
+        aFlushListeners.addInterface( rxListener );
+}
+
+
+void SAL_CALL ConvDic::removeFlushListener(
+        const uno::Reference< util::XFlushListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    if (rxListener.is())
+        aFlushListeners.removeInterface( rxListener );
+}
+
+
+OUString SAL_CALL ConvDic::getImplementationName(  )
+{
+    return "com.sun.star.lingu2.ConvDic";
+}
+
+sal_Bool SAL_CALL ConvDic::supportsService( const OUString& rServiceName )
+{
+    return cppu::supportsService(this, rServiceName);
+}
+
+uno::Sequence< OUString > SAL_CALL ConvDic::getSupportedServiceNames(  )
+{
+    return { SN_CONV_DICTIONARY };
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/convdic.hxx b/linguistic/source/convdic.hxx
new file mode 100644
index 000000000..e5f1d4bea
--- /dev/null
+++ b/linguistic/source/convdic.hxx
@@ -0,0 +1,126 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef INCLUDED_LINGUISTIC_SOURCE_CONVDIC_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_CONVDIC_HXX
+
+#include <com/sun/star/linguistic2/XConversionDictionary.hpp>
+#include <com/sun/star/linguistic2/XConversionPropertyType.hpp>
+#include <com/sun/star/util/XFlushable.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <comphelper/interfacecontainer3.hxx>
+#include <i18nlangtag/lang.h>
+
+#include <memory>
+#include <unordered_map>
+
+// text conversion dictionary extension
+inline constexpr OUStringLiteral CONV_DIC_EXT = u"tcd";
+#define CONV_DIC_DOT_EXT        ".tcd"
+
+inline constexpr OUStringLiteral SN_CONV_DICTIONARY = u"com.sun.star.linguistic2.ConversionDictionary";
+
+
+bool    IsConvDic( const OUString &rFileURL, LanguageType &nLang, sal_Int16 &nConvType );
+
+typedef std::unordered_multimap<OUString, OUString> ConvMap;
+typedef std::unordered_multimap<OUString, sal_Int16> PropTypeMap;
+
+class ConvDic :
+    public ::cppu::WeakImplHelper
+    <
+        css::linguistic2::XConversionDictionary,
+        css::linguistic2::XConversionPropertyType,
+        css::util::XFlushable,
+        css::lang::XServiceInfo
+    >
+{
+    friend class ConvDicXMLExport;
+
+protected:
+
+    ::comphelper::OInterfaceContainerHelper3<css::util::XFlushListener> aFlushListeners;
+
+    ConvMap                         aFromLeft;
+    std::unique_ptr< ConvMap >        pFromRight;     // only available for bidirectional conversion dictionaries
+
+    std::unique_ptr< PropTypeMap >    pConvPropType;
+
+    OUString        aMainURL;   // URL to file
+    OUString        aName;
+    LanguageType    nLanguage;
+    sal_Int16       nConversionType;
+    sal_Int16       nMaxLeftCharCount;
+    sal_Int16       nMaxRightCharCount;
+    bool            bMaxCharCountIsValid;
+    bool            bNeedEntries;
+    bool            bIsModified;
+    bool            bIsActive;
+
+    // disallow copy-constructor and assignment-operator for now
+    ConvDic(const ConvDic &);
+    ConvDic & operator = (const ConvDic &);
+
+    static ConvMap::iterator GetEntry( ConvMap &rMap, const OUString &rFirstText, std::u16string_view rSecondText );
+    void    Load();
+    void    Save();
+
+public:
+    ConvDic( OUString aName,
+             LanguageType nLanguage,
+             sal_Int16 nConversionType,
+             bool bBiDirectional,
+             const OUString &rMainURL);
+    virtual ~ConvDic() override;
+
+    // XConversionDictionary
+    virtual OUString SAL_CALL getName(  ) override;
+    virtual css::lang::Locale SAL_CALL getLocale(  ) override;
+    virtual sal_Int16 SAL_CALL getConversionType(  ) override;
+    virtual void SAL_CALL setActive( sal_Bool bActivate ) override;
+    virtual sal_Bool SAL_CALL isActive(  ) override;
+    virtual void SAL_CALL clear(  ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getConversions( const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength, css::linguistic2::ConversionDirection eDirection, sal_Int32 nTextConversionOptions ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getConversionEntries( css::linguistic2::ConversionDirection eDirection ) override;
+    virtual void SAL_CALL addEntry( const OUString& aLeftText, const OUString& aRightText ) override;
+    virtual void SAL_CALL removeEntry( const OUString& aLeftText, const OUString& aRightText ) override;
+    virtual sal_Int16 SAL_CALL getMaxCharCount( css::linguistic2::ConversionDirection eDirection ) override;
+
+    // XConversionPropertyType
+    virtual void SAL_CALL setPropertyType( const OUString& aLeftText, const OUString& aRightText, ::sal_Int16 nPropertyType ) override;
+    virtual ::sal_Int16 SAL_CALL getPropertyType( const OUString& aLeftText, const OUString& aRightText ) override;
+
+    // XFlushable
+    virtual void SAL_CALL flush(  ) override;
+    virtual void SAL_CALL addFlushListener( const css::uno::Reference< css::util::XFlushListener >& l ) override;
+    virtual void SAL_CALL removeFlushListener( const css::uno::Reference< css::util::XFlushListener >& l ) override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName(  ) override;
+    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) override;
+
+    bool    HasEntry( const OUString &rLeftText, std::u16string_view rRightText );
+    void    AddEntry( const OUString &rLeftText, const OUString &rRightText );
+    void    RemoveEntry( const OUString &rLeftText, const OUString &rRightText );
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/convdiclist.cxx b/linguistic/source/convdiclist.cxx
new file mode 100644
index 000000000..6be588ea1
--- /dev/null
+++ b/linguistic/source/convdiclist.cxx
@@ -0,0 +1,539 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <string_view>
+
+#include <com/sun/star/container/XNameContainer.hpp>
+#include <com/sun/star/lang/Locale.hpp>
+#include <com/sun/star/lang/NoSupportException.hpp>
+#include <com/sun/star/linguistic2/ConversionDictionaryType.hpp>
+#include <com/sun/star/linguistic2/XConversionDictionaryList.hpp>
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/util/XFlushable.hpp>
+#include <cppuhelper/factory.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/sequence.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <tools/debug.hxx>
+#include <tools/urlobj.hxx>
+#include <ucbhelper/content.hxx>
+#include <unotools/localfilehelper.hxx>
+#include <unotools/lingucfg.hxx>
+#include <tools/diagnose_ex.h>
+
+#include "convdic.hxx"
+#include "convdiclist.hxx"
+#include "hhconvdic.hxx"
+#include <linguistic/misc.hxx>
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::container;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+static OUString GetConvDicMainURL( std::u16string_view rDicName, std::u16string_view rDirectoryURL )
+{
+    // build URL to use for new (persistent) dictionaries
+
+    OUString aFullDicName = OUString::Concat(rDicName) + CONV_DIC_DOT_EXT;
+
+    INetURLObject aURLObj;
+    aURLObj.SetSmartProtocol( INetProtocol::File );
+    aURLObj.SetSmartURL( rDirectoryURL );
+    aURLObj.Append( aFullDicName, INetURLObject::EncodeMechanism::All );
+    DBG_ASSERT(!aURLObj.HasError(), "invalid URL");
+    if (aURLObj.HasError())
+        return OUString();
+    else
+        return aURLObj.GetMainURL( INetURLObject::DecodeMechanism::ToIUri );
+}
+
+class ConvDicNameContainer :
+    public cppu::WeakImplHelper< css::container::XNameContainer >
+{
+    std::vector< uno::Reference< XConversionDictionary > >   aConvDics;
+
+    sal_Int32 GetIndexByName_Impl( std::u16string_view rName );
+
+public:
+    ConvDicNameContainer();
+    ConvDicNameContainer(const ConvDicNameContainer&) = delete;
+    ConvDicNameContainer& operator=(const ConvDicNameContainer&) = delete;
+
+    // XElementAccess
+    virtual css::uno::Type SAL_CALL getElementType(  ) override;
+    virtual sal_Bool SAL_CALL hasElements(  ) override;
+
+    // XNameAccess
+    virtual css::uno::Any SAL_CALL getByName( const OUString& aName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getElementNames(  ) override;
+    virtual sal_Bool SAL_CALL hasByName( const OUString& aName ) override;
+
+    // XNameReplace
+    virtual void SAL_CALL replaceByName( const OUString& aName, const css::uno::Any& aElement ) override;
+
+    // XNameContainer
+    virtual void SAL_CALL insertByName( const OUString& aName, const css::uno::Any& aElement ) override;
+    virtual void SAL_CALL removeByName( const OUString& Name ) override;
+
+    // looks for conversion dictionaries with the specified extension
+    // in the directory and adds them to the container
+    void AddConvDics( const OUString &rSearchDirPathURL, const OUString &rExtension );
+
+    // calls Flush for the dictionaries that support XFlushable
+    void    FlushDics() const;
+
+    sal_Int32   GetCount() const    { return aConvDics.size(); }
+    uno::Reference< XConversionDictionary > GetByName( std::u16string_view rName );
+
+    const uno::Reference< XConversionDictionary >&  GetByIndex( sal_Int32 nIdx )
+    {
+        return aConvDics[nIdx];
+    }
+};
+
+ConvDicNameContainer::ConvDicNameContainer()
+{
+}
+
+void ConvDicNameContainer::FlushDics() const
+{
+    sal_Int32 nLen = aConvDics.size();
+    for (sal_Int32 i = 0;  i < nLen;  ++i)
+    {
+        uno::Reference< util::XFlushable > xFlush( aConvDics[i] , UNO_QUERY );
+        if (xFlush.is())
+        {
+            try
+            {
+                xFlush->flush();
+            }
+            catch(Exception &)
+            {
+                OSL_FAIL( "flushing of conversion dictionary failed" );
+            }
+        }
+    }
+}
+
+sal_Int32 ConvDicNameContainer::GetIndexByName_Impl(
+        std::u16string_view rName )
+{
+    sal_Int32 nRes = -1;
+    sal_Int32 nLen = aConvDics.size();
+    for (sal_Int32 i = 0;  i < nLen && nRes == -1;  ++i)
+    {
+        if (rName == aConvDics[i]->getName())
+            nRes = i;
+    }
+    return nRes;
+}
+
+uno::Reference< XConversionDictionary > ConvDicNameContainer::GetByName(
+        std::u16string_view rName )
+{
+    uno::Reference< XConversionDictionary > xRes;
+    sal_Int32 nIdx = GetIndexByName_Impl( rName );
+    if ( nIdx != -1)
+        xRes = aConvDics[nIdx];
+    return xRes;
+}
+
+uno::Type SAL_CALL ConvDicNameContainer::getElementType(  )
+{
+    return cppu::UnoType<XConversionDictionary>::get();
+}
+
+sal_Bool SAL_CALL ConvDicNameContainer::hasElements(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return !aConvDics.empty();
+}
+
+uno::Any SAL_CALL ConvDicNameContainer::getByName( const OUString& rName )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    uno::Reference< XConversionDictionary > xRes( GetByName( rName ) );
+    if (!xRes.is())
+        throw NoSuchElementException();
+    return Any( xRes );
+}
+
+uno::Sequence< OUString > SAL_CALL ConvDicNameContainer::getElementNames(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    std::vector<OUString> aRes;
+    aRes.reserve(aConvDics.size());
+
+    std::transform(aConvDics.begin(), aConvDics.end(), std::back_inserter(aRes),
+        [](const uno::Reference<XConversionDictionary>& rDic) { return rDic->getName(); });
+
+    return comphelper::containerToSequence(aRes);
+}
+
+sal_Bool SAL_CALL ConvDicNameContainer::hasByName( const OUString& rName )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return GetByName( rName ).is();
+}
+
+void SAL_CALL ConvDicNameContainer::replaceByName(
+        const OUString& rName,
+        const uno::Any& rElement )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    sal_Int32 nRplcIdx = GetIndexByName_Impl( rName );
+    if (nRplcIdx == -1)
+        throw NoSuchElementException();
+    uno::Reference< XConversionDictionary > xNew;
+    rElement >>= xNew;
+    if (!xNew.is() || xNew->getName() != rName)
+        throw IllegalArgumentException();
+    aConvDics[ nRplcIdx ] = xNew;
+}
+
+void SAL_CALL ConvDicNameContainer::insertByName(
+        const OUString& rName,
+        const Any& rElement )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (GetByName( rName ).is())
+        throw ElementExistException();
+    uno::Reference< XConversionDictionary > xNew;
+    rElement >>= xNew;
+    if (!xNew.is() || xNew->getName() != rName)
+        throw IllegalArgumentException();
+
+    aConvDics.push_back(xNew);
+}
+
+void SAL_CALL ConvDicNameContainer::removeByName( const OUString& rName )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    sal_Int32 nRplcIdx = GetIndexByName_Impl( rName );
+    if (nRplcIdx == -1)
+        throw NoSuchElementException();
+
+    // physically remove dictionary
+    uno::Reference< XConversionDictionary > xDel = aConvDics[nRplcIdx];
+    OUString aName( xDel->getName() );
+    OUString aDicMainURL( GetConvDicMainURL( aName, GetDictionaryWriteablePath() ) );
+    INetURLObject aObj( aDicMainURL );
+    DBG_ASSERT( aObj.GetProtocol() == INetProtocol::File, "+HangulHanjaOptionsDialog::OkHdl(): non-file URLs cannot be deleted" );
+    if( aObj.GetProtocol() == INetProtocol::File )
+    {
+        try
+        {
+            ::ucbhelper::Content    aCnt( aObj.GetMainURL( INetURLObject::DecodeMechanism::NONE ),
+                                    uno::Reference< css::ucb::XCommandEnvironment >(),
+                                    comphelper::getProcessComponentContext() );
+            aCnt.executeCommand( "delete", Any( true ) );
+        }
+        catch( ... )
+        {
+            TOOLS_WARN_EXCEPTION( "linguistic", "HangulHanjaOptionsDialog::OkHdl()" );
+        }
+    }
+
+    aConvDics.erase(aConvDics.begin() + nRplcIdx);
+}
+
+void ConvDicNameContainer::AddConvDics(
+        const OUString &rSearchDirPathURL,
+        const OUString &rExtension )
+{
+    const Sequence< OUString > aDirCnt(
+                utl::LocalFileHelper::GetFolderContents( rSearchDirPathURL, false ) );
+
+    for (const OUString& aURL : aDirCnt)
+    {
+        sal_Int32 nPos = aURL.lastIndexOf('.');
+        OUString aExt( aURL.copy(nPos + 1).toAsciiLowerCase() );
+        OUString aSearchExt( rExtension.toAsciiLowerCase() );
+        if(aExt != aSearchExt)
+            continue;          // skip other files
+
+        LanguageType nLang;
+        sal_Int16 nConvType;
+        if (IsConvDic( aURL, nLang, nConvType ))
+        {
+            // get decoded dictionary file name
+            INetURLObject aURLObj( aURL );
+            OUString aDicName = aURLObj.getBase( INetURLObject::LAST_SEGMENT,
+                        true, INetURLObject::DecodeMechanism::WithCharset );
+
+            uno::Reference < XConversionDictionary > xDic;
+            if (nLang == LANGUAGE_KOREAN &&
+                nConvType == ConversionDictionaryType::HANGUL_HANJA)
+            {
+                xDic = new HHConvDic( aDicName, aURL );
+            }
+            else if ((nLang == LANGUAGE_CHINESE_SIMPLIFIED || nLang == LANGUAGE_CHINESE_TRADITIONAL) &&
+                      nConvType == ConversionDictionaryType::SCHINESE_TCHINESE)
+            {
+                xDic = new ConvDic( aDicName, nLang, nConvType, false, aURL );
+            }
+
+            if (xDic.is())
+            {
+                insertByName( xDic->getName(), Any(xDic) );
+            }
+        }
+    }
+}
+
+namespace
+{
+    rtl::Reference<ConvDicList>& StaticConvDicList()
+    {
+        static rtl::Reference<ConvDicList> SINGLETON = new ConvDicList;
+        return SINGLETON;
+    };
+}
+
+void ConvDicList::MyAppExitListener::AtExit()
+{
+    rMyDicList.FlushDics();
+    StaticConvDicList().clear();
+}
+
+ConvDicList::ConvDicList() :
+    aEvtListeners( GetLinguMutex() )
+{
+    bDisposing = false;
+
+    mxExitListener = new MyAppExitListener( *this );
+    mxExitListener->Activate();
+}
+
+ConvDicList::~ConvDicList()
+{
+    if (!bDisposing && mxNameContainer.is())
+        mxNameContainer->FlushDics();
+
+    mxExitListener->Deactivate();
+}
+
+void ConvDicList::FlushDics()
+{
+    // check only pointer to avoid creating the container when
+    // the dictionaries were not accessed yet
+    if (mxNameContainer.is())
+        mxNameContainer->FlushDics();
+}
+
+ConvDicNameContainer & ConvDicList::GetNameContainer()
+{
+    if (!mxNameContainer.is())
+    {
+        mxNameContainer = new ConvDicNameContainer;
+        mxNameContainer->AddConvDics( GetDictionaryWriteablePath(), CONV_DIC_EXT  );
+
+        // access list of text conversion dictionaries to activate
+        SvtLinguOptions aOpt;
+        SvtLinguConfig().GetOptions( aOpt );
+        for (const OUString& rActiveConvDic : std::as_const(aOpt.aActiveConvDics))
+        {
+            uno::Reference< XConversionDictionary > xDic =
+                    mxNameContainer->GetByName( rActiveConvDic );
+            if (xDic.is())
+                xDic->setActive( true );
+        }
+
+        // since there is no UI to active/deactivate the dictionaries
+        // for chinese text conversion they should be activated by default
+        uno::Reference< XConversionDictionary > xS2TDic =
+                    mxNameContainer->GetByName( u"ChineseS2T" );
+        uno::Reference< XConversionDictionary > xT2SDic =
+                    mxNameContainer->GetByName( u"ChineseT2S" );
+        if (xS2TDic.is())
+            xS2TDic->setActive( true );
+        if (xT2SDic.is())
+            xT2SDic->setActive( true );
+
+    }
+    return *mxNameContainer;
+}
+
+uno::Reference< container::XNameContainer > SAL_CALL ConvDicList::getDictionaryContainer(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    GetNameContainer();
+    DBG_ASSERT( mxNameContainer.is(), "missing name container" );
+    return mxNameContainer;
+}
+
+uno::Reference< XConversionDictionary > SAL_CALL ConvDicList::addNewDictionary(
+        const OUString& rName,
+        const Locale& rLocale,
+        sal_Int16 nConvDicType )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    LanguageType nLang = LinguLocaleToLanguage( rLocale );
+
+    if (GetNameContainer().hasByName( rName ))
+        throw ElementExistException();
+
+    uno::Reference< XConversionDictionary > xRes;
+    OUString aDicMainURL( GetConvDicMainURL( rName, GetDictionaryWriteablePath() ) );
+    if (nLang == LANGUAGE_KOREAN &&
+        nConvDicType == ConversionDictionaryType::HANGUL_HANJA)
+    {
+        xRes = new HHConvDic( rName, aDicMainURL );
+    }
+    else if ((nLang == LANGUAGE_CHINESE_SIMPLIFIED || nLang == LANGUAGE_CHINESE_TRADITIONAL) &&
+              nConvDicType == ConversionDictionaryType::SCHINESE_TCHINESE)
+    {
+        xRes = new ConvDic( rName, nLang, nConvDicType, false, aDicMainURL );
+    }
+
+    if (!xRes.is())
+        throw NoSupportException();
+
+    xRes->setActive( true );
+    GetNameContainer().insertByName( rName, Any(xRes) );
+    return xRes;
+}
+
+uno::Sequence< OUString > SAL_CALL ConvDicList::queryConversions(
+        const OUString& rText,
+        sal_Int32 nStartPos,
+        sal_Int32 nLength,
+        const Locale& rLocale,
+        sal_Int16 nConversionDictionaryType,
+        ConversionDirection eDirection,
+        sal_Int32 nTextConversionOptions )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    std::vector< OUString > aRes;
+
+    bool bSupported = false;
+    sal_Int32 nLen = GetNameContainer().GetCount();
+    for (sal_Int32 i = 0;  i < nLen;  ++i)
+    {
+        const uno::Reference< XConversionDictionary > xDic( GetNameContainer().GetByIndex(i) );
+        bool bMatch =   xDic.is()  &&
+                            xDic->getLocale() == rLocale  &&
+                            xDic->getConversionType() == nConversionDictionaryType;
+        bSupported |= bMatch;
+        if (bMatch  &&  xDic->isActive())
+        {
+            const Sequence< OUString > aNewConv( xDic->getConversions(
+                                rText, nStartPos, nLength,
+                                eDirection, nTextConversionOptions ) );
+            aRes.insert( aRes.end(), aNewConv.begin(), aNewConv.end() );
+        }
+    }
+
+    if (!bSupported)
+        throw NoSupportException();
+
+    return comphelper::containerToSequence(aRes);
+}
+
+sal_Int16 SAL_CALL ConvDicList::queryMaxCharCount(
+        const Locale& rLocale,
+        sal_Int16 nConversionDictionaryType,
+        ConversionDirection eDirection )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    sal_Int16 nRes = 0;
+    GetNameContainer();
+    sal_Int32 nLen = GetNameContainer().GetCount();
+    for (sal_Int32 i = 0;  i < nLen;  ++i)
+    {
+        const uno::Reference< XConversionDictionary > xDic( GetNameContainer().GetByIndex(i) );
+        if (xDic.is()  &&
+            xDic->getLocale() == rLocale  &&
+            xDic->getConversionType() == nConversionDictionaryType)
+        {
+            sal_Int16 nC = xDic->getMaxCharCount( eDirection );
+            if (nC > nRes)
+                nRes = nC;
+        }
+    }
+    return nRes;
+}
+
+void SAL_CALL ConvDicList::dispose(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    if (!bDisposing)
+    {
+        bDisposing = true;
+        EventObject aEvtObj( static_cast<XConversionDictionaryList *>(this) );
+        aEvtListeners.disposeAndClear( aEvtObj );
+
+        FlushDics();
+    }
+}
+
+void SAL_CALL ConvDicList::addEventListener(
+        const uno::Reference< XEventListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    if (!bDisposing && rxListener.is())
+        aEvtListeners.addInterface( rxListener );
+}
+
+void SAL_CALL ConvDicList::removeEventListener(
+        const uno::Reference< XEventListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    if (!bDisposing && rxListener.is())
+        aEvtListeners.removeInterface( rxListener );
+}
+
+OUString SAL_CALL ConvDicList::getImplementationName()
+{
+    return "com.sun.star.lingu2.ConvDicList";
+}
+
+sal_Bool SAL_CALL ConvDicList::supportsService( const OUString& rServiceName )
+{
+    return cppu::supportsService(this, rServiceName);
+}
+
+uno::Sequence< OUString > SAL_CALL ConvDicList::getSupportedServiceNames()
+{
+    return { "com.sun.star.linguistic2.ConversionDictionaryList" };
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+linguistic_ConvDicList_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(StaticConvDicList().get());
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/convdiclist.hxx b/linguistic/source/convdiclist.hxx
new file mode 100644
index 000000000..11ab399aa
--- /dev/null
+++ b/linguistic/source/convdiclist.hxx
@@ -0,0 +1,90 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_CONVDICLIST_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_CONVDICLIST_HXX
+
+#include <com/sun/star/linguistic2/XConversionDictionaryList.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <comphelper/interfacecontainer3.hxx>
+#include <rtl/ref.hxx>
+
+#include <linguistic/misc.hxx>
+
+
+class ConvDicNameContainer;
+
+
+class ConvDicList :
+    public cppu::WeakImplHelper
+    <
+        css::linguistic2::XConversionDictionaryList,
+        css::lang::XComponent,
+        css::lang::XServiceInfo
+    >
+{
+
+    class MyAppExitListener : public linguistic::AppExitListener
+    {
+        ConvDicList & rMyDicList;
+
+    public:
+        explicit MyAppExitListener( ConvDicList &rDicList ) : rMyDicList( rDicList ) {}
+        virtual void    AtExit() override;
+    };
+
+    ::comphelper::OInterfaceContainerHelper3<css::lang::XEventListener> aEvtListeners;
+    rtl::Reference<ConvDicNameContainer>      mxNameContainer;
+    rtl::Reference<MyAppExitListener>         mxExitListener;
+    bool                                      bDisposing;
+
+    ConvDicList( const ConvDicList & ) = delete;
+    ConvDicList & operator = (const ConvDicList &) = delete;
+
+    ConvDicNameContainer &  GetNameContainer();
+
+public:
+    ConvDicList();
+    virtual ~ConvDicList() override;
+
+    // XConversionDictionaryList
+    virtual css::uno::Reference< css::container::XNameContainer > SAL_CALL getDictionaryContainer(  ) override;
+    virtual css::uno::Reference< css::linguistic2::XConversionDictionary > SAL_CALL addNewDictionary( const OUString& aName, const css::lang::Locale& aLocale, sal_Int16 nConversionDictionaryType ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL queryConversions( const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength, const css::lang::Locale& aLocale, sal_Int16 nConversionDictionaryType, css::linguistic2::ConversionDirection eDirection, sal_Int32 nTextConversionOptions ) override;
+    virtual sal_Int16 SAL_CALL queryMaxCharCount( const css::lang::Locale& aLocale, sal_Int16 nConversionDictionaryType, css::linguistic2::ConversionDirection eDirection ) override;
+
+    // XComponent
+    virtual void SAL_CALL dispose(  ) override;
+    virtual void SAL_CALL addEventListener( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;
+    virtual void SAL_CALL removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener ) override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName(  ) override;
+    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) override;
+
+    // non UNO-specific
+    void                    FlushDics();
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/convdicxml.cxx b/linguistic/source/convdicxml.cxx
new file mode 100644
index 000000000..c8a09997f
--- /dev/null
+++ b/linguistic/source/convdicxml.cxx
@@ -0,0 +1,342 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tools/debug.hxx>
+#include <i18nlangtag/languagetag.hxx>
+
+#include <com/sun/star/linguistic2/ConversionDictionaryType.hpp>
+#include <com/sun/star/linguistic2/ConversionPropertyType.hpp>
+#include <com/sun/star/lang/Locale.hpp>
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/document/XFilter.hpp>
+#include <com/sun/star/beans/PropertyValue.hpp>
+#include <xmloff/namespacemap.hxx>
+#include <xmloff/xmlnamespace.hxx>
+#include <unotools/streamwrap.hxx>
+
+#include "convdic.hxx"
+#include "convdicxml.hxx"
+#include <linguistic/misc.hxx>
+
+using namespace utl;
+using namespace com::sun::star;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+constexpr OUStringLiteral XML_NAMESPACE_TCD_STRING = u"http://openoffice.org/2003/text-conversion-dictionary";
+constexpr OUStringLiteral CONV_TYPE_HANGUL_HANJA = u"Hangul / Hanja";
+constexpr OUStringLiteral CONV_TYPE_SCHINESE_TCHINESE = u"Chinese simplified / Chinese traditional";
+
+
+static OUString ConversionTypeToText( sal_Int16 nConversionType )
+{
+    OUString aRes;
+    if (nConversionType == ConversionDictionaryType::HANGUL_HANJA)
+        aRes = CONV_TYPE_HANGUL_HANJA;
+    else if (nConversionType == ConversionDictionaryType::SCHINESE_TCHINESE)
+        aRes = CONV_TYPE_SCHINESE_TCHINESE;
+    return aRes;
+}
+
+static sal_Int16 GetConversionTypeFromText( std::u16string_view rText )
+{
+    sal_Int16 nRes = -1;
+    if (rText == CONV_TYPE_HANGUL_HANJA)
+        nRes = ConversionDictionaryType::HANGUL_HANJA;
+    else if (rText == CONV_TYPE_SCHINESE_TCHINESE)
+        nRes = ConversionDictionaryType::SCHINESE_TCHINESE;
+    return nRes;
+}
+
+namespace {
+
+class ConvDicXMLImportContext :
+    public SvXMLImportContext
+{
+public:
+    ConvDicXMLImportContext( ConvDicXMLImport &rImport ) :
+        SvXMLImportContext( rImport )
+    {
+    }
+
+    ConvDicXMLImport & GetConvDicImport()
+    {
+        return static_cast<ConvDicXMLImport &>(GetImport());
+    }
+
+    // SvXMLImportContext
+    virtual css::uno::Reference<XFastContextHandler> SAL_CALL createFastChildContext(
+        sal_Int32 Element, const css::uno::Reference< css::xml::sax::XFastAttributeList > & xAttrList ) override;
+};
+
+
+class ConvDicXMLDictionaryContext_Impl :
+    public ConvDicXMLImportContext
+{
+    LanguageType nLanguage;
+    sal_Int16    nConversionType;
+
+public:
+    ConvDicXMLDictionaryContext_Impl( ConvDicXMLImport &rImport ) :
+        ConvDicXMLImportContext( rImport ),
+        nLanguage(LANGUAGE_NONE), nConversionType(-1)
+    {
+    }
+
+    // SvXMLImportContext
+    virtual void SAL_CALL startFastElement( sal_Int32 nElement, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+    virtual css::uno::Reference<XFastContextHandler> SAL_CALL createFastChildContext(
+        sal_Int32 Element, const css::uno::Reference< css::xml::sax::XFastAttributeList > & xAttrList ) override;
+};
+
+
+class ConvDicXMLEntryTextContext_Impl :
+    public ConvDicXMLImportContext
+{
+    OUString    aLeftText;
+
+public:
+    ConvDicXMLEntryTextContext_Impl( ConvDicXMLImport &rImport ) :
+        ConvDicXMLImportContext( rImport )
+    {
+    }
+
+    // SvXMLImportContext
+    virtual void SAL_CALL startFastElement( sal_Int32 nElement, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+    virtual css::uno::Reference<XFastContextHandler> SAL_CALL createFastChildContext(
+        sal_Int32 Element, const css::uno::Reference< css::xml::sax::XFastAttributeList > & xAttrList ) override;
+
+    const OUString &    GetLeftText() const { return aLeftText; }
+};
+
+
+class ConvDicXMLRightTextContext_Impl :
+    public ConvDicXMLImportContext
+{
+    OUString aRightText;
+    ConvDicXMLEntryTextContext_Impl &rEntryContext;
+
+public:
+    ConvDicXMLRightTextContext_Impl(
+            ConvDicXMLImport &rImport,
+            ConvDicXMLEntryTextContext_Impl &rParentContext ) :
+        ConvDicXMLImportContext( rImport ),
+        rEntryContext( rParentContext )
+    {
+    }
+
+    // SvXMLImportContext
+    virtual void SAL_CALL endFastElement( sal_Int32 nElement ) override;
+    virtual void SAL_CALL characters( const OUString &rChars ) override;
+};
+
+}
+
+//void ConvDicXMLImportContext::characters(const OUString & /*rChars*/)
+//{
+    /*
+    Whitespace occurring within the content of token elements is "trimmed"
+    from the ends (i.e. all whitespace at the beginning and end of the
+    content is removed), and "collapsed" internally (i.e. each sequence of
+    1 or more whitespace characters is replaced with one blank character).
+    */
+    //collapsing not done yet!
+
+//}
+
+css::uno::Reference<XFastContextHandler> ConvDicXMLImportContext::createFastChildContext(
+        sal_Int32 Element,
+        const css::uno::Reference< css::xml::sax::XFastAttributeList > & /*xAttrList*/ )
+{
+    if ( Element == ConvDicXMLToken::TEXT_CONVERSION_DICTIONARY )
+        return new ConvDicXMLDictionaryContext_Impl( GetConvDicImport() );
+    return nullptr;
+}
+
+
+void ConvDicXMLDictionaryContext_Impl::startFastElement( sal_Int32 /*nElement*/,
+    const css::uno::Reference< css::xml::sax::XFastAttributeList >& rxAttrList )
+{
+    for (auto &aIter : sax_fastparser::castToFastAttributeList( rxAttrList ))
+    {
+        switch (aIter.getToken())
+        {
+            case XML_NAMESPACE_TCD | XML_LANG:
+                nLanguage = LanguageTag::convertToLanguageType( aIter.toString() );
+            break;
+            case XML_NAMESPACE_TCD | XML_CONVERSION_TYPE:
+                nConversionType = GetConversionTypeFromText( aIter.toString() );
+            break;
+            default:
+                ;
+        }
+    }
+    GetConvDicImport().SetLanguage( nLanguage );
+    GetConvDicImport().SetConversionType( nConversionType );
+
+}
+
+css::uno::Reference<XFastContextHandler> ConvDicXMLDictionaryContext_Impl::createFastChildContext(
+        sal_Int32 Element,
+        const css::uno::Reference< css::xml::sax::XFastAttributeList > & /*xAttrList*/ )
+{
+    if ( Element == ConvDicXMLToken::ENTRY )
+        return new ConvDicXMLEntryTextContext_Impl( GetConvDicImport() );
+    return nullptr;
+}
+
+css::uno::Reference<XFastContextHandler> ConvDicXMLEntryTextContext_Impl::createFastChildContext(
+        sal_Int32 Element,
+        const css::uno::Reference< css::xml::sax::XFastAttributeList > & /*xAttrList*/ )
+{
+    if ( Element == ConvDicXMLToken::RIGHT_TEXT )
+        return new ConvDicXMLRightTextContext_Impl( GetConvDicImport(), *this );
+    return nullptr;
+}
+
+void ConvDicXMLEntryTextContext_Impl::startFastElement(
+    sal_Int32 /*Element*/,
+    const css::uno::Reference< css::xml::sax::XFastAttributeList >& rxAttrList )
+{
+    for (auto &aIter : sax_fastparser::castToFastAttributeList( rxAttrList ))
+    {
+        switch (aIter.getToken())
+        {
+            case XML_NAMESPACE_TCD | XML_LEFT_TEXT:
+                aLeftText = aIter.toString();
+                break;
+            default:
+                ;
+        }
+    }
+}
+
+
+void ConvDicXMLRightTextContext_Impl::characters( const OUString &rChars )
+{
+    aRightText += rChars;
+}
+
+void ConvDicXMLRightTextContext_Impl::endFastElement( sal_Int32 /*nElement*/ )
+{
+    ConvDic *pDic = GetConvDicImport().GetDic();
+    if (pDic)
+        pDic->AddEntry( rEntryContext.GetLeftText(), aRightText );
+}
+
+
+bool ConvDicXMLExport::Export()
+{
+    uno::Reference< document::XExporter > xExporter( this );
+    uno::Reference< document::XFilter > xFilter( xExporter, UNO_QUERY );
+    xFilter->filter( {} );      // calls exportDoc implicitly
+
+    return bSuccess;
+}
+
+
+ErrCode ConvDicXMLExport::exportDoc( enum ::xmloff::token::XMLTokenEnum /*eClass*/ )
+{
+    GetNamespaceMap_().Add( "tcd",
+            XML_NAMESPACE_TCD_STRING, XML_NAMESPACE_TCD );
+
+    GetDocHandler()->startDocument();
+
+    // Add xmlns line and some other arguments
+    AddAttribute( GetNamespaceMap_().GetAttrNameByKey( XML_NAMESPACE_TCD ),
+                  GetNamespaceMap_().GetNameByKey( XML_NAMESPACE_TCD ) );
+    AddAttribute( XML_NAMESPACE_TCD, "package", "org.openoffice.Office" );
+
+    OUString aIsoLang( LanguageTag::convertToBcp47( rDic.nLanguage ) );
+    AddAttribute( XML_NAMESPACE_TCD, "lang", aIsoLang );
+    OUString aConvType( ConversionTypeToText( rDic.nConversionType ) );
+    AddAttribute( XML_NAMESPACE_TCD, "conversion-type", aConvType );
+
+    //!! block necessary in order to have SvXMLElementExport d-tor called
+    //!! before the call to endDocument
+    {
+        SvXMLElementExport aRoot( *this, XML_NAMESPACE_TCD, "text-conversion-dictionary", true, true );
+        ExportContent_();
+    }
+
+    GetDocHandler()->endDocument();
+
+    bSuccess = true;
+    return ERRCODE_NONE;
+}
+
+
+void ConvDicXMLExport::ExportContent_()
+{
+    // acquire sorted list of all keys
+    std::set<OUString>   aKeySet;
+    for (auto const& elem : rDic.aFromLeft)
+        aKeySet.insert( elem.first );
+
+    for (const OUString& aLeftText : aKeySet)
+    {
+        AddAttribute( XML_NAMESPACE_TCD, "left-text", aLeftText );
+        if (rDic.pConvPropType) // property-type list available?
+        {
+            sal_Int16 nPropertyType = -1;
+            PropTypeMap::iterator aIt2 = rDic.pConvPropType->find( aLeftText );
+            if (aIt2 != rDic.pConvPropType->end())
+                nPropertyType = (*aIt2).second;
+            DBG_ASSERT( nPropertyType, "property-type not found" );
+            if (nPropertyType == -1)
+                nPropertyType = ConversionPropertyType::NOT_DEFINED;
+            AddAttribute( XML_NAMESPACE_TCD, "property-type", OUString::number(  nPropertyType ) );
+        }
+        SvXMLElementExport aEntryMain( *this, XML_NAMESPACE_TCD,
+                "entry" , true, true );
+
+        std::pair< ConvMap::iterator, ConvMap::iterator > aRange =
+                rDic.aFromLeft.equal_range(aLeftText);
+        for (auto aIt = aRange.first;  aIt != aRange.second;  ++aIt)
+        {
+            DBG_ASSERT( aLeftText == (*aIt).first, "key <-> entry mismatch" );
+            OUString aRightText( (*aIt).second );
+            SvXMLElementExport aEntryRightText( *this, XML_NAMESPACE_TCD,
+                    "right-text" , true, false );
+            Characters( aRightText );
+        }
+    }
+}
+
+    //!!  see comment for pDic member
+ConvDicXMLImport::ConvDicXMLImport( ConvDic *pConvDic ) :
+    SvXMLImport ( comphelper::getProcessComponentContext(), "com.sun.star.lingu2.ConvDicXMLImport", SvXMLImportFlags::ALL ),
+    pDic        ( pConvDic ), nLanguage(LANGUAGE_NONE), nConversionType(-1)
+{
+    GetNamespaceMap().Add( GetXMLToken(XML_NP_TCD), GetXMLToken(XML_N_TCD), XML_NAMESPACE_TCD);
+}
+
+SvXMLImportContext * ConvDicXMLImport::CreateFastContext(
+        sal_Int32 Element,
+        const css::uno::Reference< css::xml::sax::XFastAttributeList > & /*xAttrList*/ )
+{
+    if( Element == ConvDicXMLToken::TEXT_CONVERSION_DICTIONARY )
+        return new ConvDicXMLDictionaryContext_Impl( *this );
+    return nullptr;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/convdicxml.hxx b/linguistic/source/convdicxml.hxx
new file mode 100644
index 000000000..1eca995c1
--- /dev/null
+++ b/linguistic/source/convdicxml.hxx
@@ -0,0 +1,104 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_CONVDICXML_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_CONVDICXML_HXX
+
+#include <com/sun/star/util/MeasureUnit.hpp>
+#include <com/sun/star/xml/sax/XDocumentHandler.hpp>
+#include <com/sun/star/xml/sax/FastToken.hpp>
+#include <comphelper/processfactory.hxx>
+#include <xmloff/xmlexp.hxx>
+#include <xmloff/xmlimp.hxx>
+#include <xmloff/xmltoken.hxx>
+#include <xmloff/xmlnamespace.hxx>
+#include <rtl/ustring.hxx>
+
+
+class ConvDic;
+using namespace css::xml::sax;
+using namespace ::xmloff::token;
+
+
+class ConvDicXMLExport : public SvXMLExport
+{
+    ConvDic     &rDic;
+    bool    bSuccess;
+
+public:
+    ConvDicXMLExport( ConvDic &rConvDic,
+        const OUString &rFileName,
+        css::uno::Reference< css::xml::sax::XDocumentHandler > const &rHandler) :
+        SvXMLExport ( comphelper::getProcessComponentContext(), "com.sun.star.lingu2.ConvDicXMLExport", rFileName,
+                      css::util::MeasureUnit::CM, rHandler ),
+        rDic        ( rConvDic ),
+        bSuccess    ( false )
+    {
+    }
+
+    // SvXMLExport
+    void ExportAutoStyles_() override    {}
+    void ExportMasterStyles_() override  {}
+    void ExportContent_() override;
+    ErrCode exportDoc( enum ::xmloff::token::XMLTokenEnum eClass = ::xmloff::token::XML_TOKEN_INVALID ) override;
+
+    bool    Export();
+};
+
+
+enum ConvDicXMLToken : sal_Int32
+{
+    TEXT_CONVERSION_DICTIONARY = FastToken::NAMESPACE | XML_NAMESPACE_TCD | XML_BLOCK_LIST,
+    RIGHT_TEXT = FastToken::NAMESPACE | XML_NAMESPACE_TCD | XML_RIGHT_TEXT,
+    ENTRY = FastToken::NAMESPACE | XML_NAMESPACE_TCD | XML_ENTRY,
+};
+
+class ConvDicXMLImport : public SvXMLImport
+{
+    ConvDic        *pDic;       // conversion dictionary to be used
+                                // if != NULL: whole file will be read and
+                                //   all entries will be added to the dictionary
+                                // if == NULL: no entries will be added
+                                //   but the language and conversion type will
+                                //   still be determined!
+
+    LanguageType    nLanguage;          // language of the dictionary
+    sal_Int16       nConversionType;    // conversion type the dictionary is used for
+
+public:
+
+    //!!  see comment for pDic member
+    explicit ConvDicXMLImport( ConvDic *pConvDic );
+
+    ConvDic *    GetDic()                    { return pDic; }
+    LanguageType GetLanguage() const         { return nLanguage; }
+    sal_Int16    GetConversionType() const   { return nConversionType; }
+
+    void         SetLanguage( LanguageType nLang )              { nLanguage = nLang; }
+    void         SetConversionType( sal_Int16 nType )    { nConversionType = nType; }
+
+private:
+    virtual SvXMLImportContext *CreateFastContext( sal_Int32 Element,
+        const css::uno::Reference< css::xml::sax::XFastAttributeList > & xAttrList ) override;
+};
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/defs.hxx b/linguistic/source/defs.hxx
new file mode 100644
index 000000000..7e3d65895
--- /dev/null
+++ b/linguistic/source/defs.hxx
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_DEFS_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_DEFS_HXX
+
+#include <com/sun/star/linguistic2/XSpellChecker.hpp>
+#include <com/sun/star/linguistic2/XHyphenator.hpp>
+#include <com/sun/star/linguistic2/XThesaurus.hpp>
+
+#include <memory>
+
+class SvStream;
+
+typedef std::shared_ptr< SvStream > SvStreamPtr;
+
+struct LangSvcEntries
+{
+    css::uno::Sequence< OUString >   aSvcImplNames;
+
+    sal_Int16   nLastTriedSvcIndex;
+
+    explicit LangSvcEntries( const css::uno::Sequence< OUString > &rSvcImplNames ) :
+        aSvcImplNames(rSvcImplNames),
+        nLastTriedSvcIndex(-1)
+    {
+    }
+
+    explicit LangSvcEntries( const OUString &rSvcImplName ) :
+        nLastTriedSvcIndex(-1)
+    {
+        aSvcImplNames = { rSvcImplName };
+    }
+
+    void Clear()
+    {
+        aSvcImplNames.realloc(0);
+        nLastTriedSvcIndex  = -1;
+    }
+};
+
+struct LangSvcEntries_Spell : public LangSvcEntries
+{
+    css::uno::Sequence< css::uno::Reference< css::linguistic2::XSpellChecker > >  aSvcRefs;
+
+    explicit LangSvcEntries_Spell( const css::uno::Sequence< OUString > &rSvcImplNames ) : LangSvcEntries( rSvcImplNames ) {}
+};
+
+struct LangSvcEntries_Hyph : public LangSvcEntries
+{
+    css::uno::Sequence< css::uno::Reference< css::linguistic2::XHyphenator > >  aSvcRefs;
+
+    explicit LangSvcEntries_Hyph( const OUString &rSvcImplName ) : LangSvcEntries( rSvcImplName ) {}
+};
+
+struct LangSvcEntries_Thes : public LangSvcEntries
+{
+    css::uno::Sequence< css::uno::Reference< css::linguistic2::XThesaurus > >  aSvcRefs;
+
+    explicit LangSvcEntries_Thes( const css::uno::Sequence< OUString > &rSvcImplNames ) : LangSvcEntries( rSvcImplNames ) {}
+};
+
+
+// virtual base class for the different dispatchers
+class LinguDispatcher
+{
+public:
+    virtual void SetServiceList( const css::lang::Locale &rLocale, const css::uno::Sequence< OUString > &rSvcImplNames ) = 0;
+    virtual css::uno::Sequence< OUString > GetServiceList( const css::lang::Locale &rLocale ) const = 0;
+
+protected:
+    ~LinguDispatcher() {}
+};
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/dicimp.cxx b/linguistic/source/dicimp.cxx
new file mode 100644
index 000000000..af83c96ff
--- /dev/null
+++ b/linguistic/source/dicimp.cxx
@@ -0,0 +1,1089 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <cppuhelper/factory.hxx>
+#include "dicimp.hxx"
+#include <i18nlangtag/lang.h>
+#include <i18nlangtag/languagetag.hxx>
+#include <linguistic/misc.hxx>
+#include <osl/mutex.hxx>
+#include <osl/thread.h>
+#include <sal/log.hxx>
+#include <tools/debug.hxx>
+#include <tools/stream.hxx>
+#include <tools/urlobj.hxx>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/string.hxx>
+#include <comphelper/sequence.hxx>
+#include <unotools/ucbstreamhelper.hxx>
+
+#include <com/sun/star/ucb/SimpleFileAccess.hpp>
+#include <com/sun/star/linguistic2/DictionaryEventFlags.hpp>
+#include <com/sun/star/io/TempFile.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+
+#include <com/sun/star/linguistic2/LinguServiceManager.hpp>
+#include <com/sun/star/linguistic2/XSpellChecker1.hpp>
+
+#include <algorithm>
+#include <utility>
+
+
+using namespace utl;
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+#define BUFSIZE             4096
+#define VERS2_NOLANGUAGE    1024
+
+#define MAX_HEADER_LENGTH 16
+
+// XML-header to query SPELLML support
+// to handle user words with "Grammar By" model words
+constexpr OUStringLiteral SPELLML_SUPPORT = u"<?xml?>";
+
+// User dictionaries can contain optional "title:" tags
+// to support custom titles with space and other characters.
+// (old mechanism stores the title of the user dictionary
+// only in its file name, but special characters are
+// problem for user dictionaries shipped with LibreOffice).
+//
+// The following fake file name extension will be
+// added to the text of the title: field for correct
+// text stripping and dictionary saving.
+constexpr OUStringLiteral EXTENSION_FOR_TITLE_TEXT = u".";
+
+const char* const pVerStr2    = "WBSWG2";
+const char* const pVerStr5    = "WBSWG5";
+const char* const pVerStr6    = "WBSWG6";
+const char* const pVerOOo7    = "OOoUserDict1";
+
+const sal_Int16 DIC_VERSION_DONTKNOW = -1;
+const sal_Int16 DIC_VERSION_2 = 2;
+const sal_Int16 DIC_VERSION_5 = 5;
+const sal_Int16 DIC_VERSION_6 = 6;
+const sal_Int16 DIC_VERSION_7 = 7;
+
+static uno::Reference< XLinguServiceManager2 > GetLngSvcMgr_Impl()
+{
+    uno::Reference< XComponentContext > xContext( comphelper::getProcessComponentContext() );
+    uno::Reference< XLinguServiceManager2 > xRes = LinguServiceManager::create( xContext ) ;
+    return xRes;
+}
+
+static bool getTag(std::string_view rLine, std::string_view rTagName,
+    OString &rTagValue)
+{
+    size_t nPos = rLine.find(rTagName);
+    if (nPos == std::string_view::npos)
+        return false;
+
+    rTagValue = OString(comphelper::string::strip(rLine.substr(nPos + rTagName.size()),
+        ' '));
+    return true;
+}
+
+
+sal_Int16 ReadDicVersion( SvStream& rStream, LanguageType &nLng, bool &bNeg, OUString &aDicName )
+{
+    // Sniff the header
+    sal_Int16 nDicVersion = DIC_VERSION_DONTKNOW;
+    char pMagicHeader[MAX_HEADER_LENGTH];
+
+    nLng = LANGUAGE_NONE;
+    bNeg = false;
+
+    if (rStream.GetError())
+        return -1;
+
+    sal_uInt64 const nSniffPos = rStream.Tell();
+    static std::size_t nVerOOo7Len = sal::static_int_cast< std::size_t >(strlen( pVerOOo7 ));
+    pMagicHeader[ nVerOOo7Len ] = '\0';
+    if ((rStream.ReadBytes(static_cast<void *>(pMagicHeader), nVerOOo7Len) == nVerOOo7Len) &&
+        !strcmp(pMagicHeader, pVerOOo7))
+    {
+        bool bSuccess;
+        OStringBuffer aLine;
+
+        nDicVersion = DIC_VERSION_7;
+
+        // 1st skip magic / header line
+        rStream.ReadLine(aLine);
+
+        // 2nd line: language all | en-US | pt-BR ...
+        while ((bSuccess = rStream.ReadLine(aLine)))
+        {
+            OString aTagValue;
+
+            if (aLine[0] == '#') // skip comments
+                continue;
+
+            // lang: field
+            if (getTag(aLine, "lang: ", aTagValue))
+            {
+                if (aTagValue == "<none>")
+                    nLng = LANGUAGE_NONE;
+                else
+                    nLng = LanguageTag::convertToLanguageType(
+                            OStringToOUString( aTagValue, RTL_TEXTENCODING_ASCII_US));
+            }
+
+            // type: negative / positive
+            if (getTag(aLine, "type: ", aTagValue))
+            {
+                bNeg = aTagValue == "negative";
+            }
+
+            // lang: title
+            if (getTag(aLine, "title: ", aTagValue))
+            {
+                aDicName = OStringToOUString( aTagValue, RTL_TEXTENCODING_UTF8) +
+                    // recent title text preparation in GetDicInfoStr() waits for an
+                    // extension, so we add it to avoid bad stripping at final dot
+                    // of the title text
+                    EXTENSION_FOR_TITLE_TEXT;
+            }
+
+            if (std::string_view(aLine).find("---") != std::string_view::npos) // end of header
+                break;
+        }
+        if (!bSuccess)
+            return -2;
+    }
+    else
+    {
+        sal_uInt16 nLen;
+
+        rStream.Seek (nSniffPos );
+
+        rStream.ReadUInt16( nLen );
+        if (nLen >= MAX_HEADER_LENGTH)
+            return -1;
+
+        rStream.ReadBytes(pMagicHeader, nLen);
+        pMagicHeader[nLen] = '\0';
+
+        // Check version magic
+        if (0 == strcmp( pMagicHeader, pVerStr6 ))
+            nDicVersion = DIC_VERSION_6;
+        else if (0 == strcmp( pMagicHeader, pVerStr5 ))
+            nDicVersion = DIC_VERSION_5;
+        else if (0 == strcmp( pMagicHeader, pVerStr2 ))
+            nDicVersion = DIC_VERSION_2;
+        else
+            nDicVersion = DIC_VERSION_DONTKNOW;
+
+        if (DIC_VERSION_2 == nDicVersion ||
+            DIC_VERSION_5 == nDicVersion ||
+            DIC_VERSION_6 == nDicVersion)
+        {
+            // The language of the dictionary
+            sal_uInt16 nTmp = 0;
+            rStream.ReadUInt16( nTmp );
+            nLng = LanguageType(nTmp);
+            if (VERS2_NOLANGUAGE == static_cast<sal_uInt16>(nLng))
+                nLng = LANGUAGE_NONE;
+
+            // Negative Flag
+            rStream.ReadCharAsBool( bNeg );
+        }
+    }
+
+    return nDicVersion;
+}
+
+DictionaryNeo::DictionaryNeo(OUString aName,
+                             LanguageType nLang, DictionaryType eType,
+                             const OUString &rMainURL,
+                             bool bWriteable) :
+    aDicEvtListeners( GetLinguMutex() ),
+    aDicName        (std::move(aName)),
+    aMainURL        (rMainURL),
+    eDicType        (eType),
+    nLanguage       (nLang)
+{
+    nDicVersion  = DIC_VERSION_DONTKNOW;
+    bNeedEntries = true;
+    bIsModified  = bIsActive = false;
+    bIsReadonly = !bWriteable;
+
+    if( !rMainURL.isEmpty())
+    {
+        bool bExists = FileExists( rMainURL );
+        if( !bExists )
+        {
+            // save new dictionaries with in Format 7 (UTF8 plain text)
+            nDicVersion  = DIC_VERSION_7;
+
+            //! create physical representation of an **empty** dictionary
+            //! that could be found by the dictionary-list implementation
+            // (Note: empty dictionaries are not just empty files!)
+            DBG_ASSERT( !bIsReadonly,
+                    "DictionaryNeo: dictionaries should be writeable if they are to be saved" );
+            if (!bIsReadonly)
+                saveEntries( rMainURL );
+            bNeedEntries = false;
+        }
+    }
+    else
+    {
+        // non persistent dictionaries (like IgnoreAllList) should always be writable
+        bIsReadonly  = false;
+        bNeedEntries = false;
+    }
+}
+
+DictionaryNeo::~DictionaryNeo()
+{
+}
+
+ErrCode DictionaryNeo::loadEntries(const OUString &rMainURL)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    // counter check that it is safe to set bIsModified to sal_False at
+    // the end of the function
+    DBG_ASSERT(!bIsModified, "lng : dictionary already modified!");
+
+    // function should only be called once in order to load entries from file
+    bNeedEntries = false;
+
+    if (rMainURL.isEmpty())
+        return ERRCODE_NONE;
+
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    // get XInputStream stream
+    uno::Reference< io::XInputStream > xStream;
+    try
+    {
+        uno::Reference< ucb::XSimpleFileAccess3 > xAccess( ucb::SimpleFileAccess::create(xContext) );
+        xStream = xAccess->openFileRead( rMainURL );
+    }
+    catch (const uno::Exception &)
+    {
+        SAL_WARN( "linguistic", "failed to get input stream" );
+    }
+    if (!xStream.is())
+        return ErrCode(sal_uInt32(-1));
+
+    std::unique_ptr<SvStream> pStream( utl::UcbStreamHelper::CreateStream( xStream ) );
+
+    // read header
+    bool bNegativ;
+    LanguageType nLang;
+    nDicVersion = ReadDicVersion(*pStream, nLang, bNegativ, aDicName);
+    ErrCode nErr = pStream->GetError();
+    if (nErr != ERRCODE_NONE)
+        return nErr;
+
+    nLanguage = nLang;
+
+    eDicType = bNegativ ? DictionaryType_NEGATIVE : DictionaryType_POSITIVE;
+
+    rtl_TextEncoding eEnc = osl_getThreadTextEncoding();
+    if (nDicVersion >= DIC_VERSION_6)
+        eEnc = RTL_TEXTENCODING_UTF8;
+    aEntries.clear();
+
+    if (DIC_VERSION_6 == nDicVersion ||
+        DIC_VERSION_5 == nDicVersion ||
+        DIC_VERSION_2 == nDicVersion)
+    {
+        sal_uInt16  nLen = 0;
+        char aWordBuf[ BUFSIZE ];
+
+        // Read the first word
+        if (!pStream->eof())
+        {
+            pStream->ReadUInt16( nLen );
+            if (ERRCODE_NONE != (nErr = pStream->GetError()))
+                return nErr;
+            if ( nLen < BUFSIZE )
+            {
+                pStream->ReadBytes(aWordBuf, nLen);
+                if (ERRCODE_NONE != (nErr = pStream->GetError()))
+                    return nErr;
+                *(aWordBuf + nLen) = 0;
+            }
+            else
+                return SVSTREAM_READ_ERROR;
+        }
+
+        while(!pStream->eof())
+        {
+            // Read from file
+            // Paste in dictionary without converting
+            if(*aWordBuf)
+            {
+                OUString aText(aWordBuf, rtl_str_getLength(aWordBuf), eEnc);
+                uno::Reference< XDictionaryEntry > xEntry =
+                        new DicEntry( aText, bNegativ );
+                addEntry_Impl( xEntry, true ); //! don't launch events here
+            }
+
+            pStream->ReadUInt16( nLen );
+            if (pStream->eof())
+                break;
+            if (ERRCODE_NONE != (nErr = pStream->GetError()))
+                return nErr;
+
+            if (nLen < BUFSIZE)
+            {
+                pStream->ReadBytes(aWordBuf, nLen);
+                if (ERRCODE_NONE != (nErr = pStream->GetError()))
+                    return nErr;
+            }
+            else
+                return SVSTREAM_READ_ERROR;
+            *(aWordBuf + nLen) = 0;
+        }
+    }
+    else if (DIC_VERSION_7 == nDicVersion)
+    {
+        OStringBuffer aLine;
+
+        // remaining lines - stock strings (a [==] b)
+        while (pStream->ReadLine(aLine))
+        {
+            if (aLine.isEmpty() || aLine[0] == '#') // skip comments
+                continue;
+            OUString aText = OStringToOUString(aLine, RTL_TEXTENCODING_UTF8);
+            uno::Reference< XDictionaryEntry > xEntry =
+                    new DicEntry( aText, eDicType == DictionaryType_NEGATIVE );
+            addEntry_Impl( xEntry, true ); //! don't launch events here
+        }
+    }
+
+    SAL_WARN_IF(!isSorted(), "linguistic", "dictionary is not sorted");
+
+    // since this routine should be called only initially (prior to any
+    // modification to be saved) we reset the bIsModified flag here that
+    // was implicitly set by addEntry_Impl
+    bIsModified = false;
+
+    return pStream->GetError();
+}
+
+static OString formatForSave(const uno::Reference< XDictionaryEntry > &xEntry,
+    rtl_TextEncoding eEnc )
+{
+   OUStringBuffer aStr(xEntry->getDictionaryWord());
+
+   if (xEntry->isNegative() || !xEntry->getReplacementText().isEmpty())
+   {
+       aStr.append("==" + xEntry->getReplacementText());
+   }
+   return OUStringToOString(aStr, eEnc);
+}
+
+ErrCode DictionaryNeo::saveEntries(const OUString &rURL)
+{
+    MutexGuard aGuard( GetLinguMutex() );
+
+    if (rURL.isEmpty())
+        return ERRCODE_NONE;
+    DBG_ASSERT(!INetURLObject( rURL ).HasError(), "lng : invalid URL");
+
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    // get XOutputStream stream
+    uno::Reference<io::XStream> xStream;
+    try
+    {
+        xStream = io::TempFile::create(xContext);
+    }
+    catch (const uno::Exception &)
+    {
+        DBG_ASSERT( false, "failed to get input stream" );
+    }
+    if (!xStream.is())
+        return ErrCode(sal_uInt32(-1));
+
+    std::unique_ptr<SvStream> pStream( utl::UcbStreamHelper::CreateStream( xStream ) );
+
+    // Always write as the latest version, i.e. DIC_VERSION_7
+
+    rtl_TextEncoding eEnc = RTL_TEXTENCODING_UTF8;
+    pStream->WriteLine(pVerOOo7);
+    ErrCode nErr = pStream->GetError();
+    if (nErr != ERRCODE_NONE)
+        return nErr;
+    /* XXX: the <none> case could be differentiated, is it absence or
+     * undetermined or multiple? Earlier versions did not know about 'und' and
+     * 'mul' and 'zxx' codes. Sync with ReadDicVersion() */
+    if (LinguIsUnspecified(nLanguage))
+        pStream->WriteLine("lang: <none>");
+    else
+    {
+        OString aLine = "lang: " + OUStringToOString(LanguageTag::convertToBcp47(nLanguage), eEnc);
+        pStream->WriteLine(aLine);
+    }
+    if (ERRCODE_NONE != (nErr = pStream->GetError()))
+        return nErr;
+    if (eDicType == DictionaryType_POSITIVE)
+        pStream->WriteLine("type: positive");
+    else
+        pStream->WriteLine("type: negative");
+    if (aDicName.endsWith(EXTENSION_FOR_TITLE_TEXT))
+    {
+        pStream->WriteLine(OStringConcatenation("title: " + OUStringToOString(
+            // strip EXTENSION_FOR_TITLE_TEXT
+            aDicName.subView(0, aDicName.lastIndexOf(EXTENSION_FOR_TITLE_TEXT)), eEnc)));
+    }
+    if (ERRCODE_NONE != (nErr = pStream->GetError()))
+        return nErr;
+    pStream->WriteLine("---");
+    if (ERRCODE_NONE != (nErr = pStream->GetError()))
+        return nErr;
+    for (const Reference<XDictionaryEntry> & aEntrie : aEntries)
+    {
+        OString aOutStr = formatForSave(aEntrie, eEnc);
+        pStream->WriteLine (aOutStr);
+        if (ERRCODE_NONE != (nErr = pStream->GetError()))
+            return nErr;
+    }
+
+    try
+    {
+        pStream.reset();
+        uno::Reference< ucb::XSimpleFileAccess3 > xAccess(ucb::SimpleFileAccess::create(xContext));
+        Reference<io::XInputStream> xInputStream(xStream, UNO_QUERY_THROW);
+        uno::Reference<io::XSeekable> xSeek(xInputStream, UNO_QUERY_THROW);
+        xSeek->seek(0);
+        xAccess->writeFile(rURL, xInputStream);
+        //If we are migrating from an older version, then on first successful
+        //write, we're now converted to the latest version, i.e. DIC_VERSION_7
+        nDicVersion = DIC_VERSION_7;
+    }
+    catch (const uno::Exception &)
+    {
+        DBG_ASSERT( false, "failed to write stream" );
+        return ErrCode(sal_uInt32(-1));
+    }
+
+    return nErr;
+}
+
+void DictionaryNeo::launchEvent(sal_Int16 nEvent,
+                                const uno::Reference< XDictionaryEntry >& xEntry)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    DictionaryEvent aEvt;
+    aEvt.Source = uno::Reference< XDictionary >( this );
+    aEvt.nEvent = nEvent;
+    aEvt.xDictionaryEntry = xEntry;
+
+    aDicEvtListeners.notifyEach( &XDictionaryEventListener::processDictionaryEvent, aEvt);
+}
+
+int DictionaryNeo::cmpDicEntry(std::u16string_view rWord1,
+                               std::u16string_view rWord2,
+                               bool bSimilarOnly)
+{
+    // returns 0 if rWord1 is equal to rWord2
+    //   "     a value < 0 if rWord1 is less than rWord2
+    //   "     a value > 0 if rWord1 is greater than rWord2
+
+    int nRes = 0;
+
+    sal_Int32     nLen1 = rWord1.size(),
+                  nLen2 = rWord2.size();
+    if (bSimilarOnly)
+    {
+        const sal_Unicode cChar = '.';
+        if (nLen1  &&  cChar == rWord1[ nLen1 - 1 ])
+            nLen1--;
+        if (nLen2  &&  cChar == rWord2[ nLen2 - 1 ])
+            nLen2--;
+    }
+
+    const sal_Unicode cIgnChar = '=';
+    const sal_Unicode cIgnBeg = '['; // for alternative hyphenation, eg. Schif[f]fahrt, Zuc[1k]ker
+    const sal_Unicode cIgnEnd = ']'; // planned: gee"[1-/e]rfde or ge[-/1e]e"rfde (gee"rfde -> ge=erfde)
+    sal_Int32       nIdx1 = 0,
+                  nIdx2 = 0,
+                  nNumIgnChar1 = 0,
+                  nNumIgnChar2 = 0;
+
+    bool IgnState;
+    sal_Int32 nDiff = 0;
+    sal_Unicode cChar1 = '\0';
+    sal_Unicode cChar2 = '\0';
+    do
+    {
+        // skip chars to be ignored
+        IgnState = false;
+        while (nIdx1 < nLen1)
+        {
+            cChar1 = rWord1[ nIdx1 ];
+            if (cChar1 != cIgnChar && cChar1 != cIgnBeg && !IgnState )
+                break;
+            if ( cChar1 == cIgnBeg )
+                IgnState = true;
+            else if (cChar1 == cIgnEnd)
+                IgnState = false;
+            nIdx1++;
+            nNumIgnChar1++;
+        }
+        IgnState = false;
+        while (nIdx2 < nLen2)
+        {
+            cChar2 = rWord2[ nIdx2 ];
+            if (cChar2 != cIgnChar && cChar2 != cIgnBeg && !IgnState )
+                break;
+            if ( cChar2 == cIgnBeg )
+                IgnState = true;
+            else if (cChar2 == cIgnEnd)
+                IgnState = false;
+            nIdx2++;
+            nNumIgnChar2++;
+        }
+
+        if (nIdx1 < nLen1  &&  nIdx2 < nLen2)
+        {
+            nDiff = cChar1 - cChar2;
+            if (nDiff)
+                break;
+            nIdx1++;
+            nIdx2++;
+        }
+    } while (nIdx1 < nLen1  &&  nIdx2 < nLen2);
+
+
+    if (nDiff)
+        nRes = nDiff;
+    else
+    {   // the string with the smallest count of not ignored chars is the
+        // shorter one
+
+        // count remaining IgnChars
+        IgnState = false;
+        while (nIdx1 < nLen1 )
+        {
+            if (rWord1[ nIdx1 ] == cIgnBeg)
+                IgnState = true;
+            if (IgnState || rWord1[ nIdx1 ] == cIgnChar)
+                nNumIgnChar1++;
+            if (rWord1[ nIdx1] == cIgnEnd)
+                IgnState = false;
+            nIdx1++;
+        }
+        IgnState = false;
+        while (nIdx2 < nLen2 )
+        {
+            if (rWord2[ nIdx2 ] == cIgnBeg)
+                IgnState = true;
+            if (IgnState || rWord2[ nIdx2 ] == cIgnChar)
+                nNumIgnChar2++;
+            if (rWord2[ nIdx2 ] == cIgnEnd)
+                IgnState = false;
+            nIdx2++;
+        }
+
+        nRes = (nLen1 - nNumIgnChar1) - (nLen2 - nNumIgnChar2);
+    }
+
+    return nRes;
+}
+
+bool DictionaryNeo::seekEntry(std::u16string_view rWord,
+                              sal_Int32 *pPos, bool bSimilarOnly)
+{
+    // look for entry with binary search.
+    // return sal_True if found sal_False else.
+    // if pPos != NULL it will become the position of the found entry, or
+    // if that was not found the position where it has to be inserted
+    // to keep the entries sorted
+
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    sal_Int32 nUpperIdx = getCount(),
+          nMidIdx,
+          nLowerIdx = 0;
+    if( nUpperIdx > 0 )
+    {
+        nUpperIdx--;
+        while( nLowerIdx <= nUpperIdx )
+        {
+            nMidIdx = (nLowerIdx + nUpperIdx) / 2;
+            DBG_ASSERT(aEntries[nMidIdx].is(), "lng : empty entry encountered");
+
+            int nCmp = - cmpDicEntry( aEntries[nMidIdx]->getDictionaryWord(),
+                                      rWord, bSimilarOnly );
+            if(nCmp == 0)
+            {
+                if( pPos ) *pPos = nMidIdx;
+                return true;
+            }
+            else if(nCmp > 0)
+                nLowerIdx = nMidIdx + 1;
+            else if( nMidIdx == 0 )
+            {
+                if( pPos ) *pPos = nLowerIdx;
+                return false;
+            }
+            else
+                nUpperIdx = nMidIdx - 1;
+        }
+    }
+    if( pPos ) *pPos = nLowerIdx;
+    return false;
+}
+
+bool DictionaryNeo::isSorted()
+{
+    bool bRes = true;
+
+    sal_Int32 nEntries = getCount();
+    sal_Int32 i;
+    for (i = 1;  i < nEntries;  i++)
+    {
+        if (cmpDicEntry( aEntries[i-1]->getDictionaryWord(),
+                         aEntries[i]->getDictionaryWord() ) > 0)
+        {
+            bRes = false;
+            break;
+        }
+    }
+    return bRes;
+}
+
+bool DictionaryNeo::addEntry_Impl(const uno::Reference< XDictionaryEntry >& xDicEntry,
+        bool bIsLoadEntries)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    bool bRes = false;
+
+    if ( bIsLoadEntries || (!bIsReadonly  &&  xDicEntry.is()) )
+    {
+        bool bIsNegEntry = xDicEntry->isNegative();
+        bool bAddEntry   = !isFull() &&
+                   (   ( eDicType == DictionaryType_POSITIVE && !bIsNegEntry )
+                    || ( eDicType == DictionaryType_NEGATIVE &&  bIsNegEntry )
+                    || ( eDicType == DictionaryType_MIXED ) );
+
+        // look for position to insert entry at
+        // if there is already an entry do not insert the new one
+        sal_Int32 nPos = 0;
+        if (bAddEntry)
+        {
+            const bool bFound = seekEntry( xDicEntry->getDictionaryWord(), &nPos );
+            if (bFound)
+                bAddEntry = false;
+        }
+
+        if (bAddEntry)
+        {
+            DBG_ASSERT(!bNeedEntries, "lng : entries still not loaded");
+
+            // insert new entry at specified position
+            aEntries.insert(aEntries.begin() + nPos, xDicEntry);
+            SAL_WARN_IF(!isSorted(), "linguistic", "dictionary entries unsorted");
+
+            bIsModified = true;
+            bRes = true;
+
+            if (!bIsLoadEntries)
+                launchEvent( DictionaryEventFlags::ADD_ENTRY, xDicEntry );
+        }
+    }
+
+    // add word to the Hunspell dictionary using a sample word for affixation/compounding
+    if (xDicEntry.is() && !xDicEntry->isNegative() && !xDicEntry->getReplacementText().isEmpty()) {
+        uno::Reference< XLinguServiceManager2 > xLngSvcMgr( GetLngSvcMgr_Impl() );
+        uno::Reference< XSpellChecker1 > xSpell;
+        Reference< XSpellAlternatives > xTmpRes;
+        xSpell.set( xLngSvcMgr->getSpellChecker(), UNO_QUERY );
+        Sequence< css::beans::PropertyValue > aEmptySeq;
+        if (xSpell.is() && (xSpell->isValid( SPELLML_SUPPORT, static_cast<sal_uInt16>(nLanguage), aEmptySeq )))
+        {
+            // "Grammar By" sample word is a Hunspell dictionary word?
+            if (xSpell->isValid( xDicEntry->getReplacementText(), static_cast<sal_uInt16>(nLanguage), aEmptySeq ))
+            {
+                xTmpRes = xSpell->spell( "<?xml?><query type='add'><word>" +
+                    xDicEntry->getDictionaryWord() + "</word><word>" + xDicEntry->getReplacementText() +
+                    "</word></query>", static_cast<sal_uInt16>(nLanguage), aEmptySeq );
+                bRes = true;
+            } else
+                bRes = false;
+        }
+    }
+
+    return bRes;
+}
+
+OUString SAL_CALL DictionaryNeo::getName(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return aDicName;
+}
+
+void SAL_CALL DictionaryNeo::setName( const OUString& aName )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (aDicName != aName)
+    {
+        aDicName = aName;
+        launchEvent(DictionaryEventFlags::CHG_NAME, nullptr);
+    }
+}
+
+DictionaryType SAL_CALL DictionaryNeo::getDictionaryType(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    return eDicType;
+}
+
+void SAL_CALL DictionaryNeo::setActive( sal_Bool bActivate )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (bIsActive == bool(bActivate))
+        return;
+
+    bIsActive = bActivate;
+    sal_Int16 nEvent = bIsActive ?
+            DictionaryEventFlags::ACTIVATE_DIC : DictionaryEventFlags::DEACTIVATE_DIC;
+
+    // remove entries from memory if dictionary is deactivated
+    if (!bIsActive)
+    {
+        bool bIsEmpty = aEntries.empty();
+
+        // save entries first if necessary
+        if (bIsModified && hasLocation() && !isReadonly())
+        {
+            store();
+
+            aEntries.clear();
+            bNeedEntries = !bIsEmpty;
+        }
+        DBG_ASSERT( !bIsModified || !hasLocation() || isReadonly(),
+                "lng : dictionary is still modified" );
+    }
+
+    launchEvent(nEvent, nullptr);
+}
+
+sal_Bool SAL_CALL DictionaryNeo::isActive(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return bIsActive;
+}
+
+sal_Int32 SAL_CALL DictionaryNeo::getCount(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (bNeedEntries)
+        loadEntries( aMainURL );
+    return static_cast<sal_Int32>(aEntries.size());
+}
+
+Locale SAL_CALL DictionaryNeo::getLocale(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return LanguageTag::convertToLocale( nLanguage );
+}
+
+void SAL_CALL DictionaryNeo::setLocale( const Locale& aLocale )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    LanguageType nLanguageP = LinguLocaleToLanguage( aLocale );
+    if (!bIsReadonly  &&  nLanguage != nLanguageP)
+    {
+        nLanguage = nLanguageP;
+        bIsModified = true; // new language needs to be saved with dictionary
+
+        launchEvent( DictionaryEventFlags::CHG_LANGUAGE, nullptr );
+    }
+}
+
+uno::Reference< XDictionaryEntry > SAL_CALL DictionaryNeo::getEntry(
+            const OUString& aWord )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (bNeedEntries)
+        loadEntries( aMainURL );
+
+    sal_Int32 nPos;
+    bool bFound = seekEntry( aWord, &nPos, true );
+    DBG_ASSERT(!bFound || nPos < static_cast<sal_Int32>(aEntries.size()), "lng : index out of range");
+
+    return bFound ? aEntries[ nPos ]
+                    : uno::Reference< XDictionaryEntry >();
+}
+
+sal_Bool SAL_CALL DictionaryNeo::addEntry(
+            const uno::Reference< XDictionaryEntry >& xDicEntry )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    bool bRes = false;
+
+    if (!bIsReadonly)
+    {
+        if (bNeedEntries)
+            loadEntries( aMainURL );
+        bRes = addEntry_Impl( xDicEntry );
+    }
+
+    return bRes;
+}
+
+sal_Bool SAL_CALL
+    DictionaryNeo::add( const OUString& rWord, sal_Bool bIsNegative,
+            const OUString& rRplcText )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    bool bRes = false;
+
+    if (!bIsReadonly)
+    {
+        uno::Reference< XDictionaryEntry > xEntry =
+                new DicEntry( rWord, bIsNegative, rRplcText );
+        bRes = addEntry_Impl( xEntry );
+    }
+
+    return bRes;
+}
+
+sal_Bool SAL_CALL DictionaryNeo::remove( const OUString& aWord )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    bool bRemoved = false;
+
+    if (!bIsReadonly)
+    {
+        if (bNeedEntries)
+            loadEntries( aMainURL );
+
+        sal_Int32 nPos;
+        bool bFound = seekEntry( aWord, &nPos );
+        DBG_ASSERT(!bFound || nPos < static_cast<sal_Int32>(aEntries.size()), "lng : index out of range");
+
+        // remove element if found
+        if (bFound)
+        {
+            // entry to be removed
+            uno::Reference< XDictionaryEntry >
+                    xDicEntry( aEntries[ nPos ] );
+            DBG_ASSERT(xDicEntry.is(), "lng : dictionary entry is NULL");
+
+            aEntries.erase(aEntries.begin() + nPos);
+
+            bRemoved = bIsModified = true;
+
+            launchEvent( DictionaryEventFlags::DEL_ENTRY, xDicEntry );
+        }
+    }
+
+    return bRemoved;
+}
+
+sal_Bool SAL_CALL DictionaryNeo::isFull(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (bNeedEntries)
+        loadEntries( aMainURL );
+    return aEntries.size() >= DIC_MAX_ENTRIES;
+}
+
+uno::Sequence< uno::Reference< XDictionaryEntry > >
+    SAL_CALL DictionaryNeo::getEntries(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (bNeedEntries)
+        loadEntries( aMainURL );
+    return comphelper::containerToSequence(aEntries);
+}
+
+
+void SAL_CALL DictionaryNeo::clear(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bIsReadonly && !aEntries.empty())
+    {
+        // release all references to old entries
+        aEntries.clear();
+
+        bNeedEntries = false;
+        bIsModified = true;
+
+        launchEvent( DictionaryEventFlags::ENTRIES_CLEARED , nullptr );
+    }
+}
+
+sal_Bool SAL_CALL DictionaryNeo::addDictionaryEventListener(
+            const uno::Reference< XDictionaryEventListener >& xListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    bool bRes = false;
+    if (xListener.is())
+    {
+        sal_Int32   nLen = aDicEvtListeners.getLength();
+        bRes = aDicEvtListeners.addInterface( xListener ) != nLen;
+    }
+    return bRes;
+}
+
+sal_Bool SAL_CALL DictionaryNeo::removeDictionaryEventListener(
+            const uno::Reference< XDictionaryEventListener >& xListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    bool bRes = false;
+    if (xListener.is())
+    {
+        sal_Int32   nLen = aDicEvtListeners.getLength();
+        bRes = aDicEvtListeners.removeInterface( xListener ) != nLen;
+    }
+    return bRes;
+}
+
+
+sal_Bool SAL_CALL DictionaryNeo::hasLocation()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return !aMainURL.isEmpty();
+}
+
+OUString SAL_CALL DictionaryNeo::getLocation()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return aMainURL;
+}
+
+sal_Bool SAL_CALL DictionaryNeo::isReadonly()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    return bIsReadonly;
+}
+
+void SAL_CALL DictionaryNeo::store()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (bIsModified && hasLocation() && !isReadonly())
+    {
+        if (!saveEntries( aMainURL ))
+            bIsModified = false;
+    }
+}
+
+void SAL_CALL DictionaryNeo::storeAsURL(
+            const OUString& aURL,
+            const uno::Sequence< beans::PropertyValue >& /*rArgs*/ )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!saveEntries( aURL ))
+    {
+        aMainURL = aURL;
+        bIsModified = false;
+        bIsReadonly = IsReadOnly( getLocation() );
+    }
+}
+
+void SAL_CALL DictionaryNeo::storeToURL(
+            const OUString& aURL,
+            const uno::Sequence< beans::PropertyValue >& /*rArgs*/ )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    saveEntries(aURL);
+}
+
+
+DicEntry::DicEntry(const OUString &rDicFileWord,
+                   bool bIsNegativWord)
+{
+    if (!rDicFileWord.isEmpty())
+        splitDicFileWord( rDicFileWord, aDicWord, aReplacement );
+    bIsNegativ = bIsNegativWord;
+}
+
+DicEntry::DicEntry(OUString aDicWord_, bool bNegativ,
+                   OUString aRplcText_) :
+    aDicWord                (std::move(aDicWord_)),
+    aReplacement            (std::move(aRplcText_)),
+    bIsNegativ              (bNegativ)
+{
+}
+
+DicEntry::~DicEntry()
+{
+}
+
+void DicEntry::splitDicFileWord(const OUString &rDicFileWord,
+                                OUString &rDicWord,
+                                OUString &rReplacement)
+{
+    sal_Int32 nDelimPos = rDicFileWord.indexOf( "==" );
+    if (-1 != nDelimPos)
+    {
+        sal_Int32 nTriplePos = nDelimPos + 2;
+        if (    nTriplePos < rDicFileWord.getLength()
+            &&  rDicFileWord[ nTriplePos ] == '=' )
+            ++nDelimPos;
+        rDicWord     = rDicFileWord.copy( 0, nDelimPos );
+        rReplacement = rDicFileWord.copy( nDelimPos + 2 );
+    }
+    else
+    {
+        rDicWord     = rDicFileWord;
+        rReplacement.clear();
+    }
+}
+
+OUString SAL_CALL DicEntry::getDictionaryWord(  )
+{
+    return aDicWord;
+}
+
+sal_Bool SAL_CALL DicEntry::isNegative(  )
+{
+    return bIsNegativ;
+}
+
+OUString SAL_CALL DicEntry::getReplacementText(  )
+{
+    return aReplacement;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/dicimp.hxx b/linguistic/source/dicimp.hxx
new file mode 100644
index 000000000..c94094de6
--- /dev/null
+++ b/linguistic/source/dicimp.hxx
@@ -0,0 +1,174 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_DICIMP_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_DICIMP_HXX
+
+#include <com/sun/star/linguistic2/XDictionary.hpp>
+#include <com/sun/star/frame/XStorable.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <comphelper/interfacecontainer3.hxx>
+#include <i18nlangtag/lang.h>
+#include <vcl/errcode.hxx>
+
+#include "defs.hxx"
+
+#define DIC_MAX_ENTRIES     30000
+
+sal_Int16 ReadDicVersion( SvStream& rStream, LanguageType &nLng, bool &bNeg, OUString &aDicName );
+
+class DictionaryNeo :
+    public ::cppu::WeakImplHelper
+    <
+        css::linguistic2::XDictionary,
+        css::frame::XStorable
+    >
+{
+
+    ::comphelper::OInterfaceContainerHelper3<css::linguistic2::XDictionaryEventListener> aDicEvtListeners;
+    std::vector< css::uno::Reference< css::linguistic2::XDictionaryEntry > >
+                                                                aEntries;
+    OUString                                                    aDicName;
+    OUString                                                    aMainURL;
+    css::linguistic2::DictionaryType                            eDicType;
+    LanguageType                                                nLanguage;
+    sal_Int16                                                   nDicVersion;
+    bool                                                        bNeedEntries;
+    bool                                                        bIsModified;
+    bool                                                        bIsActive;
+    bool                                                        bIsReadonly;
+
+    DictionaryNeo(const DictionaryNeo &) = delete;
+    DictionaryNeo & operator = (const DictionaryNeo &) = delete;
+
+    void                    launchEvent(sal_Int16 nEvent,
+                                        const css::uno::Reference< css::linguistic2::XDictionaryEntry >& xEntry);
+
+    ErrCode                     loadEntries(const OUString &rMainURL);
+    ErrCode                     saveEntries(const OUString &rMainURL);
+    static int                  cmpDicEntry(std::u16string_view rWord1,
+                                        std::u16string_view rWord2,
+                                        bool bSimilarOnly = false);
+    bool                        seekEntry(std::u16string_view rWord, sal_Int32 *pPos,
+                                        bool bSimilarOnly = false);
+    bool                        isSorted();
+
+    bool                        addEntry_Impl(const css::uno::Reference< css::linguistic2::XDictionaryEntry >& rDicEntry,
+                                          bool bIsLoadEntries = false);
+
+public:
+    DictionaryNeo(OUString aName, LanguageType nLang,
+                    css::linguistic2::DictionaryType eType,
+                    const OUString &rMainURL,
+                    bool bWriteable );
+    virtual ~DictionaryNeo() override;
+
+    // XNamed
+    virtual OUString SAL_CALL
+        getName() override;
+    virtual void SAL_CALL
+        setName( const OUString& aName ) override;
+
+    // XDictionary
+    virtual css::linguistic2::DictionaryType SAL_CALL
+        getDictionaryType() override;
+    virtual void SAL_CALL
+        setActive( sal_Bool bActivate ) override;
+    virtual sal_Bool SAL_CALL
+        isActive() override;
+    virtual sal_Int32 SAL_CALL
+        getCount() override;
+    virtual css::lang::Locale SAL_CALL
+        getLocale() override;
+    virtual void SAL_CALL
+        setLocale( const css::lang::Locale& aLocale ) override;
+    virtual css::uno::Reference<
+            css::linguistic2::XDictionaryEntry > SAL_CALL
+        getEntry( const OUString& aWord ) override;
+    virtual sal_Bool SAL_CALL
+        addEntry( const css::uno::Reference<
+                css::linguistic2::XDictionaryEntry >& xDicEntry ) override;
+    virtual sal_Bool SAL_CALL
+        add( const OUString& aWord, sal_Bool bIsNegative,
+                const OUString& aRplcText ) override;
+    virtual sal_Bool SAL_CALL
+        remove( const OUString& aWord ) override;
+    virtual sal_Bool SAL_CALL
+        isFull() override;
+    virtual css::uno::Sequence< css::uno::Reference< css::linguistic2::XDictionaryEntry > > SAL_CALL
+        getEntries() override;
+    virtual void SAL_CALL
+        clear() override;
+    virtual sal_Bool SAL_CALL
+        addDictionaryEventListener( const css::uno::Reference< css::linguistic2::XDictionaryEventListener >& xListener ) override;
+    virtual sal_Bool SAL_CALL
+        removeDictionaryEventListener( const css::uno::Reference< css::linguistic2::XDictionaryEventListener >& xListener ) override;
+
+    // XStorable
+    virtual sal_Bool SAL_CALL
+        hasLocation() override;
+    virtual OUString SAL_CALL
+        getLocation() override;
+    virtual sal_Bool SAL_CALL
+        isReadonly() override;
+    virtual void SAL_CALL
+        store() override;
+    virtual void SAL_CALL
+        storeAsURL( const OUString& aURL,
+                const css::uno::Sequence< css::beans::PropertyValue >& aArgs ) override;
+    virtual void SAL_CALL
+        storeToURL( const OUString& aURL,
+                const css::uno::Sequence< css::beans::PropertyValue >& aArgs ) override;
+};
+
+
+class DicEntry :
+    public cppu::WeakImplHelper< css::linguistic2::XDictionaryEntry >
+{
+    OUString aDicWord,       // including hyphen positions represented by "="
+                    aReplacement;   // including hyphen positions represented by "="
+    bool            bIsNegativ;
+
+    DicEntry(const DicEntry &) = delete;
+    DicEntry & operator = (const DicEntry &) = delete;
+
+    static void            splitDicFileWord(const OUString &rDicFileWord,
+                                     OUString &rDicWord,
+                                     OUString &rReplacement);
+
+public:
+    DicEntry(const OUString &rDicFileWord, bool bIsNegativ);
+    DicEntry(OUString aDicWord, bool bIsNegativ,
+             OUString aRplcText);
+    virtual ~DicEntry() override;
+
+    // XDictionaryEntry
+    virtual OUString SAL_CALL
+        getDictionaryWord() override;
+    virtual sal_Bool SAL_CALL
+        isNegative() override;
+    virtual OUString SAL_CALL
+        getReplacementText() override;
+};
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/dlistimp.cxx b/linguistic/source/dlistimp.cxx
new file mode 100644
index 000000000..281abce9e
--- /dev/null
+++ b/linguistic/source/dlistimp.cxx
@@ -0,0 +1,790 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <cppuhelper/factory.hxx>
+#include <osl/file.hxx>
+#include <tools/debug.hxx>
+#include <tools/stream.hxx>
+#include <tools/urlobj.hxx>
+#include <unotools/useroptions.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <cppuhelper/weak.hxx>
+#include <unotools/localfilehelper.hxx>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/sequence.hxx>
+#include <unotools/ucbstreamhelper.hxx>
+#include <com/sun/star/frame/XStorable.hpp>
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/linguistic2/DictionaryEventFlags.hpp>
+#include <com/sun/star/linguistic2/DictionaryListEventFlags.hpp>
+#include <com/sun/star/ucb/SimpleFileAccess.hpp>
+#include <svtools/strings.hrc>
+#include <unotools/resmgr.hxx>
+#include <unotools/charclass.hxx>
+#include <sal/log.hxx>
+#include <utility>
+
+#include "dlistimp.hxx"
+#include "dicimp.hxx"
+#include "lngopt.hxx"
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+static bool IsVers2OrNewer( const OUString& rFileURL, LanguageType& nLng, bool& bNeg, OUString& aDicName );
+
+static void AddInternal( const uno::Reference< XDictionary > &rDic,
+                         const OUString& rNew );
+static void AddUserData( const uno::Reference< XDictionary > &rDic );
+
+
+class DicEvtListenerHelper :
+    public cppu::WeakImplHelper
+    <
+        XDictionaryEventListener
+    >
+{
+    comphelper::OInterfaceContainerHelper3<XDictionaryListEventListener> aDicListEvtListeners;
+    uno::Reference< XDictionaryList >       xMyDicList;
+
+    sal_Int16                               nCondensedEvt;
+    sal_Int16                               nNumCollectEvtListeners;
+
+public:
+    explicit DicEvtListenerHelper( uno::Reference< XDictionaryList > xDicList );
+    virtual ~DicEvtListenerHelper() override;
+
+    // XEventListener
+    virtual void SAL_CALL
+        disposing( const EventObject& rSource ) override;
+
+    // XDictionaryEventListener
+    virtual void SAL_CALL
+        processDictionaryEvent( const DictionaryEvent& rDicEvent ) override;
+
+    // non-UNO functions
+    void    DisposeAndClear( const EventObject &rEvtObj );
+
+    bool    AddDicListEvtListener(
+                const uno::Reference< XDictionaryListEventListener >& rxListener );
+    bool    RemoveDicListEvtListener(
+                const uno::Reference< XDictionaryListEventListener >& rxListener );
+    sal_Int16   BeginCollectEvents() { return ++nNumCollectEvtListeners;}
+    sal_Int16   EndCollectEvents();
+    sal_Int16   FlushEvents();
+    void    ClearEvents()   { nCondensedEvt = 0; }
+};
+
+
+DicEvtListenerHelper::DicEvtListenerHelper(
+        uno::Reference< XDictionaryList > xDicList ) :
+    aDicListEvtListeners    ( GetLinguMutex() ),
+    xMyDicList              (std::move( xDicList )),
+    nCondensedEvt(0), nNumCollectEvtListeners(0)
+{
+}
+
+
+DicEvtListenerHelper::~DicEvtListenerHelper()
+{
+    DBG_ASSERT(aDicListEvtListeners.getLength() == 0,
+        "lng : event listeners are still existing");
+}
+
+
+void DicEvtListenerHelper::DisposeAndClear( const EventObject &rEvtObj )
+{
+    aDicListEvtListeners.disposeAndClear( rEvtObj );
+}
+
+
+void SAL_CALL DicEvtListenerHelper::disposing( const EventObject& rSource )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    uno::Reference< XDictionaryListEventListener > xSrc( rSource.Source, UNO_QUERY );
+
+    // remove event object from EventListener list
+    if (xSrc.is())
+        aDicListEvtListeners.removeInterface( xSrc );
+
+    // if object is a dictionary then remove it from the dictionary list
+    // Note: this will probably happen only if someone makes a XDictionary
+    // implementation of his own that is also a XComponent.
+    uno::Reference< XDictionary > xDic( rSource.Source, UNO_QUERY );
+    if (xDic.is())
+    {
+        xMyDicList->removeDictionary( xDic );
+    }
+}
+
+
+void SAL_CALL DicEvtListenerHelper::processDictionaryEvent(
+            const DictionaryEvent& rDicEvent )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    uno::Reference< XDictionary > xDic( rDicEvent.Source, UNO_QUERY );
+    DBG_ASSERT(xDic.is(), "lng : missing event source");
+
+    // assert that there is a corresponding dictionary entry if one was
+    // added or deleted
+    DBG_ASSERT( !(rDicEvent.nEvent &
+                    (DictionaryEventFlags::ADD_ENTRY | DictionaryEventFlags::DEL_ENTRY))
+                || rDicEvent.xDictionaryEntry.is(),
+                "lng : missing dictionary entry" );
+
+    // evaluate DictionaryEvents and update data for next DictionaryListEvent
+    DictionaryType eDicType = xDic->getDictionaryType();
+    DBG_ASSERT(eDicType != DictionaryType_MIXED,
+        "lng : unexpected dictionary type");
+    if ((rDicEvent.nEvent & DictionaryEventFlags::ADD_ENTRY) && xDic->isActive())
+        nCondensedEvt |= rDicEvent.xDictionaryEntry->isNegative() ?
+            DictionaryListEventFlags::ADD_NEG_ENTRY :
+            DictionaryListEventFlags::ADD_POS_ENTRY;
+    if ((rDicEvent.nEvent & DictionaryEventFlags::DEL_ENTRY) && xDic->isActive())
+        nCondensedEvt |= rDicEvent.xDictionaryEntry->isNegative() ?
+            DictionaryListEventFlags::DEL_NEG_ENTRY :
+            DictionaryListEventFlags::DEL_POS_ENTRY;
+    if ((rDicEvent.nEvent & DictionaryEventFlags::ENTRIES_CLEARED) && xDic->isActive())
+        nCondensedEvt |= eDicType == DictionaryType_NEGATIVE ?
+            DictionaryListEventFlags::DEL_NEG_ENTRY :
+            DictionaryListEventFlags::DEL_POS_ENTRY;
+    if ((rDicEvent.nEvent & DictionaryEventFlags::CHG_LANGUAGE) && xDic->isActive())
+        nCondensedEvt |= eDicType == DictionaryType_NEGATIVE ?
+            DictionaryListEventFlags::DEACTIVATE_NEG_DIC
+                | DictionaryListEventFlags::ACTIVATE_NEG_DIC :
+            DictionaryListEventFlags::DEACTIVATE_POS_DIC
+                | DictionaryListEventFlags::ACTIVATE_POS_DIC;
+    if (rDicEvent.nEvent & DictionaryEventFlags::ACTIVATE_DIC)
+        nCondensedEvt |= eDicType == DictionaryType_NEGATIVE ?
+            DictionaryListEventFlags::ACTIVATE_NEG_DIC :
+            DictionaryListEventFlags::ACTIVATE_POS_DIC;
+    if (rDicEvent.nEvent & DictionaryEventFlags::DEACTIVATE_DIC)
+        nCondensedEvt |= eDicType == DictionaryType_NEGATIVE ?
+            DictionaryListEventFlags::DEACTIVATE_NEG_DIC :
+            DictionaryListEventFlags::DEACTIVATE_POS_DIC;
+
+    if (nNumCollectEvtListeners == 0 && nCondensedEvt != 0)
+        FlushEvents();
+}
+
+
+bool DicEvtListenerHelper::AddDicListEvtListener(
+            const uno::Reference< XDictionaryListEventListener >& xListener )
+{
+    DBG_ASSERT( xListener.is(), "empty reference" );
+    sal_Int32   nCount = aDicListEvtListeners.getLength();
+    return aDicListEvtListeners.addInterface( xListener ) != nCount;
+}
+
+
+bool DicEvtListenerHelper::RemoveDicListEvtListener(
+            const uno::Reference< XDictionaryListEventListener >& xListener )
+{
+    DBG_ASSERT( xListener.is(), "empty reference" );
+    sal_Int32   nCount = aDicListEvtListeners.getLength();
+    return aDicListEvtListeners.removeInterface( xListener ) != nCount;
+}
+
+
+sal_Int16 DicEvtListenerHelper::EndCollectEvents()
+{
+    DBG_ASSERT(nNumCollectEvtListeners > 0, "lng: mismatched function call");
+    if (nNumCollectEvtListeners > 0)
+    {
+        FlushEvents();
+        nNumCollectEvtListeners--;
+    }
+
+    return nNumCollectEvtListeners;
+}
+
+
+sal_Int16 DicEvtListenerHelper::FlushEvents()
+{
+    if (0 != nCondensedEvt)
+    {
+        // build DictionaryListEvent to pass on to listeners
+        uno::Sequence< DictionaryEvent > aDicEvents;
+        DictionaryListEvent aEvent( xMyDicList, nCondensedEvt, aDicEvents );
+
+        // pass on event
+        aDicListEvtListeners.notifyEach( &XDictionaryListEventListener::processDictionaryListEvent, aEvent );
+
+        // clear "list" of events
+        nCondensedEvt = 0;
+    }
+
+    return nNumCollectEvtListeners;
+}
+
+
+void DicList::MyAppExitListener::AtExit()
+{
+    rMyDicList.SaveDics();
+}
+
+
+DicList::DicList() :
+    aEvtListeners   ( GetLinguMutex() )
+{
+    mxDicEvtLstnrHelper  = new DicEvtListenerHelper( this );
+    bDisposing = false;
+    bInCreation = false;
+
+    mxExitListener = new MyAppExitListener( *this );
+    mxExitListener->Activate();
+}
+
+DicList::~DicList()
+{
+    mxExitListener->Deactivate();
+}
+
+
+void DicList::SearchForDictionaries(
+    DictionaryVec_t&rDicList,
+    const OUString &rDicDirURL,
+    bool bIsWriteablePath )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    const uno::Sequence< OUString > aDirCnt( utl::LocalFileHelper::
+                                        GetFolderContents( rDicDirURL, false ) );
+    SvtSysLocale aSysLocale;
+
+    for (const OUString& aURL : aDirCnt)
+    {
+        LanguageType nLang = LANGUAGE_NONE;
+        bool         bNeg  = false;
+        OUString     aDicTitle = "";
+
+        if(!::IsVers2OrNewer( aURL, nLang, bNeg, aDicTitle ))
+        {
+            // When not
+            sal_Int32 nPos  = aURL.indexOf('.');
+            OUString aExt( aURL.copy(nPos + 1).toAsciiLowerCase() );
+
+            if ("dcn" == aExt)       // negative
+                bNeg = true;
+            else if ("dcp" == aExt)  // positive
+                bNeg = false;
+            else
+                continue;          // other files
+        }
+
+        // Record in the list of Dictionaries
+        // When it already exists don't record
+        OUString aTmp1 = aSysLocale.GetCharClass().lowercase( aURL);
+        sal_Int32 nPos = aTmp1.lastIndexOf( '/' );
+        if (-1 != nPos)
+            aTmp1 = aTmp1.copy( nPos + 1 );
+        OUString aTmp2;
+        size_t j;
+        size_t nCount = rDicList.size();
+        for(j = 0;  j < nCount;  j++)
+        {
+            aTmp2 = rDicList[j]->getName();
+            aTmp2 = aSysLocale.GetCharClass().lowercase( aTmp2);
+            if(aTmp1 == aTmp2)
+                break;
+        }
+        if(j >= nCount)     // dictionary not yet in DicList
+        {
+            // get decoded dictionary file name
+            INetURLObject aURLObj( aURL );
+            OUString aDicName = aURLObj.getName( INetURLObject::LAST_SEGMENT,
+                        true, INetURLObject::DecodeMechanism::WithCharset );
+
+            DictionaryType eType = bNeg ? DictionaryType_NEGATIVE : DictionaryType_POSITIVE;
+            uno::Reference< XDictionary > xDic =
+                        new DictionaryNeo( aDicTitle.isEmpty() ? aDicName : aDicTitle, nLang, eType, aURL, bIsWriteablePath );
+
+            addDictionary( xDic );
+            nCount++;
+        }
+    }
+}
+
+
+sal_Int32 DicList::GetDicPos(const uno::Reference< XDictionary > &xDic)
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    DictionaryVec_t& rDicList = GetOrCreateDicList();
+    size_t n = rDicList.size();
+    for (size_t i = 0;  i < n;  i++)
+    {
+        if ( rDicList[i] == xDic )
+            return i;
+    }
+    return -1;
+}
+
+sal_Int16 SAL_CALL DicList::getCount()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+    return static_cast< sal_Int16 >(GetOrCreateDicList().size());
+}
+
+uno::Sequence< uno::Reference< XDictionary > > SAL_CALL
+        DicList::getDictionaries()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    DictionaryVec_t& rDicList = GetOrCreateDicList();
+
+    return comphelper::containerToSequence(rDicList);
+}
+
+uno::Reference< XDictionary > SAL_CALL
+        DicList::getDictionaryByName( const OUString& aDictionaryName )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    uno::Reference< XDictionary > xDic;
+    DictionaryVec_t& rDicList = GetOrCreateDicList();
+    size_t nCount = rDicList.size();
+    for (size_t i = 0;  i < nCount;  i++)
+    {
+        const uno::Reference< XDictionary > &rDic = rDicList[i];
+        if (rDic.is()  &&  rDic->getName() == aDictionaryName)
+        {
+            xDic = rDic;
+            break;
+        }
+    }
+
+    return xDic;
+}
+
+sal_Bool SAL_CALL DicList::addDictionary(
+            const uno::Reference< XDictionary >& xDictionary )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (bDisposing)
+        return false;
+
+    bool bRes = false;
+    if (xDictionary.is())
+    {
+        DictionaryVec_t& rDicList = GetOrCreateDicList();
+        rDicList.push_back( xDictionary );
+        bRes = true;
+
+        // add listener helper to the dictionaries listener lists
+        xDictionary->addDictionaryEventListener( mxDicEvtLstnrHelper );
+    }
+    return bRes;
+}
+
+sal_Bool SAL_CALL
+    DicList::removeDictionary( const uno::Reference< XDictionary >& xDictionary )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (bDisposing)
+        return false;
+
+    bool  bRes = false;
+    sal_Int32 nPos = GetDicPos( xDictionary );
+    if (nPos >= 0)
+    {
+        // remove dictionary list from the dictionaries listener lists
+        DictionaryVec_t& rDicList = GetOrCreateDicList();
+        uno::Reference< XDictionary > xDic( rDicList[ nPos ] );
+        DBG_ASSERT(xDic.is(), "lng : empty reference");
+        if (xDic.is())
+        {
+            // deactivate dictionary if not already done
+            xDic->setActive( false );
+
+            xDic->removeDictionaryEventListener( mxDicEvtLstnrHelper );
+        }
+
+        // remove element at nPos
+        rDicList.erase( rDicList.begin() + nPos );
+        bRes = true;
+    }
+    return bRes;
+}
+
+sal_Bool SAL_CALL DicList::addDictionaryListEventListener(
+            const uno::Reference< XDictionaryListEventListener >& xListener,
+            sal_Bool bReceiveVerbose )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (bDisposing)
+        return false;
+
+    DBG_ASSERT(!bReceiveVerbose, "lng : not yet supported");
+
+    bool bRes = false;
+    if (xListener.is()) //! don't add empty references
+    {
+        bRes = mxDicEvtLstnrHelper->AddDicListEvtListener( xListener );
+    }
+    return bRes;
+}
+
+sal_Bool SAL_CALL DicList::removeDictionaryListEventListener(
+            const uno::Reference< XDictionaryListEventListener >& xListener )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (bDisposing)
+        return false;
+
+    bool bRes = false;
+    if(xListener.is())
+    {
+        bRes = mxDicEvtLstnrHelper->RemoveDicListEvtListener( xListener );
+    }
+    return bRes;
+}
+
+sal_Int16 SAL_CALL DicList::beginCollectEvents()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+    return mxDicEvtLstnrHelper->BeginCollectEvents();
+}
+
+sal_Int16 SAL_CALL DicList::endCollectEvents()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+    return mxDicEvtLstnrHelper->EndCollectEvents();
+}
+
+sal_Int16 SAL_CALL DicList::flushEvents()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+    return mxDicEvtLstnrHelper->FlushEvents();
+}
+
+uno::Reference< XDictionary > SAL_CALL
+    DicList::createDictionary( const OUString& rName, const Locale& rLocale,
+            DictionaryType eDicType, const OUString& rURL )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    bool bIsWriteablePath = rURL.match( GetDictionaryWriteablePath() );
+    return new DictionaryNeo( rName, nLanguage, eDicType, rURL, bIsWriteablePath );
+}
+
+
+uno::Reference< XDictionaryEntry > SAL_CALL
+    DicList::queryDictionaryEntry( const OUString& rWord, const Locale& rLocale,
+            sal_Bool bSearchPosDics, sal_Bool bSearchSpellEntry )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+    return SearchDicList( this, rWord, LinguLocaleToLanguage( rLocale ),
+                            bSearchPosDics, bSearchSpellEntry );
+}
+
+
+void SAL_CALL
+    DicList::dispose()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (bDisposing)
+        return;
+
+    bDisposing = true;
+    EventObject aEvtObj( static_cast<XDictionaryList *>(this) );
+
+    aEvtListeners.disposeAndClear( aEvtObj );
+    if (mxDicEvtLstnrHelper.is())
+        mxDicEvtLstnrHelper->DisposeAndClear( aEvtObj );
+
+    //! avoid creation of dictionaries if not already done
+    if ( !aDicList.empty() )
+    {
+        DictionaryVec_t& rDicList = GetOrCreateDicList();
+        size_t nCount = rDicList.size();
+        for (size_t i = 0;  i < nCount;  i++)
+        {
+            // save (modified) dictionaries
+            uno::Reference< frame::XStorable >  xStor( rDicList[i] , UNO_QUERY );
+            if (xStor.is())
+            {
+                try
+                {
+                    if (!xStor->isReadonly() && xStor->hasLocation())
+                        xStor->store();
+                }
+                catch(Exception &)
+                {
+                }
+            }
+
+            // release references to (members of) this object hold by
+            // dictionaries
+            if (rDicList[i].is())
+                rDicList[i]->removeDictionaryEventListener( mxDicEvtLstnrHelper );
+        }
+    }
+    mxDicEvtLstnrHelper.clear();
+}
+
+void SAL_CALL
+    DicList::addEventListener( const uno::Reference< XEventListener >& rxListener )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (!bDisposing && rxListener.is())
+        aEvtListeners.addInterface( rxListener );
+}
+
+void SAL_CALL
+    DicList::removeEventListener( const uno::Reference< XEventListener >& rxListener )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (!bDisposing && rxListener.is())
+        aEvtListeners.removeInterface( rxListener );
+}
+
+void DicList::CreateDicList()
+{
+    bInCreation = true;
+
+    // look for dictionaries
+    const OUString aWriteablePath( GetDictionaryWriteablePath() );
+    std::vector< OUString > aPaths( GetDictionaryPaths() );
+    for (const OUString & aPath : aPaths)
+    {
+        const bool bIsWriteablePath = (aPath == aWriteablePath);
+        SearchForDictionaries( aDicList, aPath, bIsWriteablePath );
+    }
+
+    // create IgnoreAllList dictionary with empty URL (non persistent)
+    // and add it to list
+    std::locale loc(Translate::Create("svt"));
+    uno::Reference< XDictionary > xIgnAll(
+            createDictionary( Translate::get(STR_DESCRIPTION_IGNOREALLLIST, loc), LinguLanguageToLocale( LANGUAGE_NONE ),
+                              DictionaryType_POSITIVE, OUString() ) );
+    if (xIgnAll.is())
+    {
+        AddUserData( xIgnAll );
+        xIgnAll->setActive( true );
+        addDictionary( xIgnAll );
+    }
+
+
+    // evaluate list of dictionaries to be activated from configuration
+    //! to suppress overwriting the list of active dictionaries in the
+    //! configuration with incorrect arguments during the following
+    //! activation of the dictionaries
+    mxDicEvtLstnrHelper->BeginCollectEvents();
+    const uno::Sequence< OUString > aActiveDics( aOpt.GetActiveDics() );
+    for (const OUString& rActiveDic : aActiveDics)
+    {
+        if (!rActiveDic.isEmpty())
+        {
+            uno::Reference< XDictionary > xDic( getDictionaryByName( rActiveDic ) );
+            if (xDic.is())
+                xDic->setActive( true );
+        }
+    }
+
+    // suppress collected events during creation of the dictionary list.
+    // there should be no events during creation.
+    mxDicEvtLstnrHelper->ClearEvents();
+
+    mxDicEvtLstnrHelper->EndCollectEvents();
+
+    bInCreation = false;
+}
+
+
+void DicList::SaveDics()
+{
+    // save dics only if they have already been used/created.
+    //! don't create them just for the purpose of saving them !
+    if ( aDicList.empty() )
+        return;
+
+    // save (modified) dictionaries
+    DictionaryVec_t& rDicList = GetOrCreateDicList();
+    size_t nCount = rDicList.size();
+    for (size_t i = 0;  i < nCount;  i++)
+    {
+        // save (modified) dictionaries
+        uno::Reference< frame::XStorable >  xStor( rDicList[i], UNO_QUERY );
+        if (xStor.is())
+        {
+            try
+            {
+                if (!xStor->isReadonly() && xStor->hasLocation())
+                    xStor->store();
+            }
+            catch(Exception &)
+            {
+            }
+        }
+    }
+}
+
+
+// Service specific part
+
+OUString SAL_CALL DicList::getImplementationName(  )
+{
+    return "com.sun.star.lingu2.DicList";
+}
+
+
+sal_Bool SAL_CALL DicList::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+uno::Sequence< OUString > SAL_CALL DicList::getSupportedServiceNames(  )
+{
+    return { "com.sun.star.linguistic2.DictionaryList" };
+}
+
+
+
+static sal_Int32 lcl_GetToken( OUString &rToken,
+            const OUString &rText, sal_Int32 nPos, std::u16string_view rDelim )
+{
+    sal_Int32 nRes = -1;
+
+    if (rText.isEmpty() ||  nPos >= rText.getLength())
+        rToken.clear();
+    else if (rDelim.empty())
+    {
+        rToken = rText;
+        if (!rToken.isEmpty())
+            nRes = rText.getLength();
+    }
+    else
+    {
+        sal_Int32 i;
+        for (i = nPos; i < rText.getLength(); ++i)
+        {
+            if (std::string_view::npos != rDelim.find( rText[i] ))
+                break;
+        }
+
+        if (i >= rText.getLength())   // delimiter not found
+            rToken  = rText.copy( nPos );
+        else
+            rToken  = rText.copy( nPos, i - nPos );
+        nRes    = i + 1;    // continue after found delimiter
+    }
+
+    return nRes;
+}
+
+
+static void AddInternal(
+        const uno::Reference<XDictionary> &rDic,
+        const OUString& rNew )
+{
+    if (!rDic.is())
+        return;
+
+    //! TL TODO: word iterator should be used to break up the text
+    OUString aDelim("!\"#$%&'()*+,-/:;<=>?[]\\_^`{|}~\t \n");
+    OSL_ENSURE(aDelim.indexOf(u'.') == -1,
+        "ensure no '.'");
+
+    OUString      aToken;
+    sal_Int32 nPos = 0;
+    while (-1 != (nPos = lcl_GetToken( aToken, rNew, nPos, aDelim )))
+    {
+        if( !aToken.isEmpty()  &&  !IsNumeric( aToken ) )
+        {
+            rDic->add( aToken, false, OUString() );
+        }
+    }
+}
+
+static void AddUserData( const uno::Reference< XDictionary > &rDic )
+{
+    if (rDic.is())
+    {
+        SvtUserOptions aUserOpt;
+        AddInternal( rDic, aUserOpt.GetFullName() );
+        AddInternal( rDic, aUserOpt.GetCompany() );
+        AddInternal( rDic, aUserOpt.GetStreet() );
+        AddInternal( rDic, aUserOpt.GetCity() );
+        AddInternal( rDic, aUserOpt.GetTitle() );
+        AddInternal( rDic, aUserOpt.GetPosition() );
+        AddInternal( rDic, aUserOpt.GetEmail() );
+    }
+}
+
+static bool IsVers2OrNewer( const OUString& rFileURL, LanguageType& nLng, bool& bNeg, OUString& aDicName )
+{
+    if (rFileURL.isEmpty())
+        return false;
+    OUString aExt;
+    sal_Int32 nPos = rFileURL.lastIndexOf( '.' );
+    if (-1 != nPos)
+        aExt = rFileURL.copy( nPos + 1 ).toAsciiLowerCase();
+
+    if (aExt != "dic")
+        return false;
+
+    // get stream to be used
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    // get XInputStream stream
+    uno::Reference< io::XInputStream > xStream;
+    try
+    {
+        uno::Reference< ucb::XSimpleFileAccess3 > xAccess( ucb::SimpleFileAccess::create(xContext) );
+        xStream = xAccess->openFileRead( rFileURL );
+    }
+    catch (const uno::Exception &)
+    {
+        SAL_WARN( "linguistic", "failed to get input stream" );
+    }
+    DBG_ASSERT( xStream.is(), "failed to get stream for read" );
+    if (!xStream.is())
+        return false;
+
+    std::unique_ptr<SvStream> pStream( utl::UcbStreamHelper::CreateStream( xStream ) );
+
+    int nDicVersion = ReadDicVersion(*pStream, nLng, bNeg, aDicName);
+    return 2 == nDicVersion || nDicVersion >= 5;
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+linguistic_DicList_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new DicList());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/dlistimp.hxx b/linguistic/source/dlistimp.hxx
new file mode 100644
index 000000000..97ae91f7c
--- /dev/null
+++ b/linguistic/source/dlistimp.hxx
@@ -0,0 +1,121 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_DLISTIMP_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_DLISTIMP_HXX
+
+#include <com/sun/star/linguistic2/XSearchableDictionaryList.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+
+#include <comphelper/interfacecontainer3.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <rtl/ref.hxx>
+
+#include <vector>
+
+#include <linguistic/misc.hxx>
+#include "lngopt.hxx"
+
+class DicEvtListenerHelper;
+
+
+class DicList :
+    public cppu::WeakImplHelper
+    <
+        css::linguistic2::XSearchableDictionaryList,
+        css::lang::XComponent,
+        css::lang::XServiceInfo
+    >
+{
+    class MyAppExitListener : public linguistic::AppExitListener
+    {
+        DicList & rMyDicList;
+
+    public:
+        explicit MyAppExitListener( DicList &rDicList ) : rMyDicList( rDicList ) {}
+        virtual void    AtExit() override;
+    };
+
+    LinguOptions    aOpt;
+
+    ::comphelper::OInterfaceContainerHelper3<css::lang::XEventListener> aEvtListeners;
+
+    typedef std::vector< css::uno::Reference< css::linguistic2::XDictionary > >   DictionaryVec_t;
+    DictionaryVec_t                             aDicList;
+
+    rtl::Reference<DicEvtListenerHelper>        mxDicEvtLstnrHelper;
+    rtl::Reference<MyAppExitListener>           mxExitListener;
+
+    bool    bDisposing;
+    bool    bInCreation;
+
+    DicList( const DicList & ) = delete;
+    DicList & operator = (const DicList &) = delete;
+
+    void                CreateDicList();
+    DictionaryVec_t &   GetOrCreateDicList()
+                        {
+                            if ( !bInCreation && aDicList.empty() )
+                                CreateDicList();
+                            return aDicList;
+                        }
+
+    void                SearchForDictionaries( DictionaryVec_t &rDicList,
+                                            const OUString &rDicDir, bool bIsWritePath );
+    sal_Int32           GetDicPos(const css::uno::Reference<
+                            css::linguistic2::XDictionary > &xDic);
+
+public:
+    DicList();
+    virtual ~DicList() override;
+
+    // XDictionaryList
+    virtual ::sal_Int16 SAL_CALL getCount(  ) override;
+    virtual css::uno::Sequence< css::uno::Reference< css::linguistic2::XDictionary > > SAL_CALL getDictionaries(  ) override;
+    virtual css::uno::Reference< css::linguistic2::XDictionary > SAL_CALL getDictionaryByName( const OUString& aDictionaryName ) override;
+    virtual sal_Bool SAL_CALL addDictionary( const css::uno::Reference< css::linguistic2::XDictionary >& xDictionary ) override;
+    virtual sal_Bool SAL_CALL removeDictionary( const css::uno::Reference< css::linguistic2::XDictionary >& xDictionary ) override;
+    virtual sal_Bool SAL_CALL addDictionaryListEventListener( const css::uno::Reference< css::linguistic2::XDictionaryListEventListener >& xListener, sal_Bool bReceiveVerbose ) override;
+    virtual sal_Bool SAL_CALL removeDictionaryListEventListener( const css::uno::Reference< css::linguistic2::XDictionaryListEventListener >& xListener ) override;
+    virtual ::sal_Int16 SAL_CALL beginCollectEvents(  ) override;
+    virtual ::sal_Int16 SAL_CALL endCollectEvents(  ) override;
+    virtual ::sal_Int16 SAL_CALL flushEvents(  ) override;
+    virtual css::uno::Reference< css::linguistic2::XDictionary > SAL_CALL createDictionary( const OUString& aName, const css::lang::Locale& aLocale, css::linguistic2::DictionaryType eDicType, const OUString& aURL ) override;
+
+    // XSearchableDictionaryList
+    virtual css::uno::Reference< css::linguistic2::XDictionaryEntry > SAL_CALL queryDictionaryEntry( const OUString& aWord, const css::lang::Locale& aLocale, sal_Bool bSearchPosDics, sal_Bool bSpellEntry ) override;
+
+    // XComponent
+    virtual void SAL_CALL dispose() override;
+    virtual void SAL_CALL addEventListener( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;
+    virtual void SAL_CALL removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener ) override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+    // non UNO-specific
+    void    SaveDics();
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/gciterator.cxx b/linguistic/source/gciterator.cxx
new file mode 100644
index 000000000..28336c518
--- /dev/null
+++ b/linguistic/source/gciterator.cxx
@@ -0,0 +1,1179 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/macros.h>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/container/ElementExistException.hpp>
+#include <com/sun/star/container/XNameAccess.hpp>
+#include <com/sun/star/configuration/theDefaultProvider.hpp>
+#include <com/sun/star/i18n/BreakIterator.hpp>
+#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#include <com/sun/star/linguistic2/XSupportedLocales.hpp>
+#include <com/sun/star/linguistic2/XProofreader.hpp>
+#include <com/sun/star/linguistic2/XProofreadingIterator.hpp>
+#include <com/sun/star/linguistic2/SingleProofreadingError.hpp>
+#include <com/sun/star/linguistic2/ProofreadingResult.hpp>
+#include <com/sun/star/linguistic2/LinguServiceEvent.hpp>
+#include <com/sun/star/linguistic2/LinguServiceEventFlags.hpp>
+#include <com/sun/star/text/TextMarkupType.hpp>
+#include <com/sun/star/text/TextMarkupDescriptor.hpp>
+#include <com/sun/star/text/XMultiTextMarkup.hpp>
+#include <com/sun/star/text/XFlatParagraph.hpp>
+#include <com/sun/star/text/XFlatParagraphIterator.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+#include <sal/config.h>
+#include <sal/log.hxx>
+#include <o3tl/safeint.hxx>
+#include <osl/conditn.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <cppuhelper/weak.hxx>
+#include <i18nlangtag/languagetag.hxx>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/propertysequence.hxx>
+#include <tools/debug.hxx>
+#include <tools/diagnose_ex.h>
+
+#include <map>
+
+#include <linguistic/misc.hxx>
+
+#include "gciterator.hxx"
+
+using namespace linguistic;
+using namespace ::com::sun::star;
+
+// white space list: obtained from the fonts.config.txt of a Linux system.
+const sal_Unicode aWhiteSpaces[] =
+{
+    0x0020,   /* SPACE */
+    0x00a0,   /* NO-BREAK SPACE */
+    0x00ad,   /* SOFT HYPHEN */
+    0x115f,   /* HANGUL CHOSEONG FILLER */
+    0x1160,   /* HANGUL JUNGSEONG FILLER */
+    0x1680,   /* OGHAM SPACE MARK */
+    0x2000,   /* EN QUAD */
+    0x2001,   /* EM QUAD */
+    0x2002,   /* EN SPACE */
+    0x2003,   /* EM SPACE */
+    0x2004,   /* THREE-PER-EM SPACE */
+    0x2005,   /* FOUR-PER-EM SPACE */
+    0x2006,   /* SIX-PER-EM SPACE */
+    0x2007,   /* FIGURE SPACE */
+    0x2008,   /* PUNCTUATION SPACE */
+    0x2009,   /* THIN SPACE */
+    0x200a,   /* HAIR SPACE */
+    0x200b,   /* ZERO WIDTH SPACE */
+    0x200c,   /* ZERO WIDTH NON-JOINER */
+    0x200d,   /* ZERO WIDTH JOINER */
+    0x200e,   /* LEFT-TO-RIGHT MARK */
+    0x200f,   /* RIGHT-TO-LEFT MARK */
+    0x2028,   /* LINE SEPARATOR */
+    0x2029,   /* PARAGRAPH SEPARATOR */
+    0x202a,   /* LEFT-TO-RIGHT EMBEDDING */
+    0x202b,   /* RIGHT-TO-LEFT EMBEDDING */
+    0x202c,   /* POP DIRECTIONAL FORMATTING */
+    0x202d,   /* LEFT-TO-RIGHT OVERRIDE */
+    0x202e,   /* RIGHT-TO-LEFT OVERRIDE */
+    0x202f,   /* NARROW NO-BREAK SPACE */
+    0x205f,   /* MEDIUM MATHEMATICAL SPACE */
+    0x2060,   /* WORD JOINER */
+    0x2061,   /* FUNCTION APPLICATION */
+    0x2062,   /* INVISIBLE TIMES */
+    0x2063,   /* INVISIBLE SEPARATOR */
+    0x206A,   /* INHIBIT SYMMETRIC SWAPPING */
+    0x206B,   /* ACTIVATE SYMMETRIC SWAPPING */
+    0x206C,   /* INHIBIT ARABIC FORM SHAPING */
+    0x206D,   /* ACTIVATE ARABIC FORM SHAPING */
+    0x206E,   /* NATIONAL DIGIT SHAPES */
+    0x206F,   /* NOMINAL DIGIT SHAPES */
+    0x3000,   /* IDEOGRAPHIC SPACE */
+    0x3164,   /* HANGUL FILLER */
+    0xfeff,   /* ZERO WIDTH NO-BREAK SPACE */
+    0xffa0,   /* HALFWIDTH HANGUL FILLER */
+    0xfff9,   /* INTERLINEAR ANNOTATION ANCHOR */
+    0xfffa,   /* INTERLINEAR ANNOTATION SEPARATOR */
+    0xfffb    /* INTERLINEAR ANNOTATION TERMINATOR */
+};
+
+//  Information about reason for proofreading (ProofInfo)
+   const sal_Int32 PROOFINFO_GET_PROOFRESULT = 1;
+   const sal_Int32 PROOFINFO_MARK_PARAGRAPH = 2;
+
+const int nWhiteSpaces = SAL_N_ELEMENTS( aWhiteSpaces );
+
+static bool lcl_IsWhiteSpace( sal_Unicode cChar )
+{
+    bool bFound = false;
+    for (int i = 0;  i < nWhiteSpaces && !bFound;  ++i)
+    {
+        if (cChar == aWhiteSpaces[i])
+            bFound = true;
+    }
+    return bFound;
+}
+
+static sal_Int32 lcl_SkipWhiteSpaces( const OUString &rText, sal_Int32 nStartPos )
+{
+    // note having nStartPos point right behind the string is OK since that one
+    // is a correct end-of-sentence position to be returned from a grammar checker...
+
+    const sal_Int32 nLen = rText.getLength();
+    bool bIllegalArgument = false;
+    if (nStartPos < 0)
+    {
+        bIllegalArgument = true;
+        nStartPos = 0;
+    }
+    if (nStartPos > nLen)
+    {
+        bIllegalArgument = true;
+        nStartPos = nLen;
+    }
+    if (bIllegalArgument)
+    {
+        SAL_WARN( "linguistic", "lcl_SkipWhiteSpaces: illegal arguments" );
+    }
+
+    sal_Int32 nRes = nStartPos;
+    if (0 <= nStartPos && nStartPos < nLen)
+    {
+        const sal_Unicode* const pEnd = rText.getStr() + nLen;
+        const sal_Unicode *pText = rText.getStr() + nStartPos;
+        while (pText != pEnd && lcl_IsWhiteSpace(*pText))
+            ++pText;
+        nRes = pText - rText.getStr();
+    }
+
+    DBG_ASSERT( 0 <= nRes && nRes <= nLen, "lcl_SkipWhiteSpaces return value out of range" );
+    return nRes;
+}
+
+static sal_Int32 lcl_BacktraceWhiteSpaces( const OUString &rText, sal_Int32 nStartPos )
+{
+    // note: having nStartPos point right behind the string is OK since that one
+    // is a correct end-of-sentence position to be returned from a grammar checker...
+
+    const sal_Int32 nLen = rText.getLength();
+    bool bIllegalArgument = false;
+    if (nStartPos < 0)
+    {
+        bIllegalArgument = true;
+        nStartPos = 0;
+    }
+    if (nStartPos > nLen)
+    {
+        bIllegalArgument = true;
+        nStartPos = nLen;
+    }
+    if (bIllegalArgument)
+    {
+        SAL_WARN( "linguistic", "lcl_BacktraceWhiteSpaces: illegal arguments" );
+    }
+
+    sal_Int32 nRes = nStartPos;
+    sal_Int32 nPosBefore = nStartPos - 1;
+    const sal_Unicode *pStart = rText.getStr();
+    if (0 <= nPosBefore && nPosBefore < nLen && lcl_IsWhiteSpace( pStart[ nPosBefore ] ))
+    {
+        nStartPos = nPosBefore;
+        const sal_Unicode *pText = rText.getStr() + nStartPos;
+        while (pText > pStart && lcl_IsWhiteSpace( *pText ))
+            --pText;
+        // now add 1 since we want to point to the first char after the last char in the sentence...
+        nRes = pText - pStart + 1;
+    }
+
+    DBG_ASSERT( 0 <= nRes && nRes <= nLen, "lcl_BacktraceWhiteSpaces return value out of range" );
+    return nRes;
+}
+
+
+extern "C" {
+
+static void lcl_workerfunc (void * gci)
+{
+    osl_setThreadName("GrammarCheckingIterator");
+
+    static_cast<GrammarCheckingIterator*>(gci)->DequeueAndCheck();
+}
+
+}
+
+static lang::Locale lcl_GetPrimaryLanguageOfSentence(
+    const uno::Reference< text::XFlatParagraph >& xFlatPara,
+    sal_Int32 nStartIndex )
+{
+    //get the language of the first word
+    return xFlatPara->getLanguageOfText( nStartIndex, 1 );
+}
+
+
+LngXStringKeyMap::LngXStringKeyMap() {}
+
+void SAL_CALL LngXStringKeyMap::insertValue(const OUString& aKey, const css::uno::Any& aValue)
+{
+    std::map<OUString, css::uno::Any>::const_iterator aIter = maMap.find(aKey);
+    if (aIter != maMap.end())
+        throw css::container::ElementExistException();
+
+    maMap[aKey] = aValue;
+}
+
+css::uno::Any SAL_CALL LngXStringKeyMap::getValue(const OUString& aKey)
+{
+    std::map<OUString, css::uno::Any>::const_iterator aIter = maMap.find(aKey);
+    if (aIter == maMap.end())
+        throw css::container::NoSuchElementException();
+
+    return (*aIter).second;
+}
+
+sal_Bool SAL_CALL LngXStringKeyMap::hasValue(const OUString& aKey)
+{
+    return maMap.find(aKey) != maMap.end();
+}
+
+::sal_Int32 SAL_CALL LngXStringKeyMap::getCount() { return maMap.size(); }
+
+OUString SAL_CALL LngXStringKeyMap::getKeyByIndex(::sal_Int32 nIndex)
+{
+    if (nIndex < 0 || o3tl::make_unsigned(nIndex) >= maMap.size())
+        throw css::lang::IndexOutOfBoundsException();
+
+    return OUString();
+}
+
+css::uno::Any SAL_CALL LngXStringKeyMap::getValueByIndex(::sal_Int32 nIndex)
+{
+    if (nIndex < 0 || o3tl::make_unsigned(nIndex) >= maMap.size())
+        throw css::lang::IndexOutOfBoundsException();
+
+    return css::uno::Any();
+}
+
+
+osl::Mutex& GrammarCheckingIterator::MyMutex()
+{
+    static osl::Mutex SINGLETON;
+    return SINGLETON;
+}
+
+GrammarCheckingIterator::GrammarCheckingIterator() :
+    m_bEnd( false ),
+    m_bGCServicesChecked( false ),
+    m_nDocIdCounter( 0 ),
+    m_thread(nullptr),
+    m_aEventListeners( MyMutex() ),
+    m_aNotifyListeners( MyMutex() )
+{
+}
+
+
+GrammarCheckingIterator::~GrammarCheckingIterator()
+{
+    TerminateThread();
+}
+
+void GrammarCheckingIterator::TerminateThread()
+{
+    oslThread t;
+    {
+        ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+        t = m_thread;
+        m_thread = nullptr;
+        m_bEnd = true;
+        m_aWakeUpThread.set();
+    }
+    if (t != nullptr)
+    {
+        osl_joinWithThread(t);
+        osl_destroyThread(t);
+    }
+}
+
+sal_Int32 GrammarCheckingIterator::NextDocId()
+{
+    ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+    m_nDocIdCounter += 1;
+    return m_nDocIdCounter;
+}
+
+
+OUString GrammarCheckingIterator::GetOrCreateDocId(
+    const uno::Reference< lang::XComponent > &xComponent )
+{
+    // internal method; will always be called with locked mutex
+
+    OUString aRes;
+    if (xComponent.is())
+    {
+        if (m_aDocIdMap.find( xComponent.get() ) != m_aDocIdMap.end())
+        {
+            // return already existing entry
+            aRes = m_aDocIdMap[ xComponent.get() ];
+        }
+        else // add new entry
+        {
+            sal_Int32 nRes = NextDocId();
+            aRes = OUString::number( nRes );
+            m_aDocIdMap[ xComponent.get() ] = aRes;
+            xComponent->addEventListener( this );
+        }
+    }
+    return aRes;
+}
+
+
+void GrammarCheckingIterator::AddEntry(
+    const uno::WeakReference< text::XFlatParagraphIterator >& xFlatParaIterator,
+    const uno::WeakReference< text::XFlatParagraph >& xFlatPara,
+    const OUString & rDocId,
+    sal_Int32 nStartIndex,
+    bool bAutomatic )
+{
+    // we may not need/have a xFlatParaIterator (e.g. if checkGrammarAtPos was called)
+    // but we always need a xFlatPara...
+    uno::Reference< text::XFlatParagraph > xPara( xFlatPara );
+    if (!xPara.is())
+        return;
+
+    FPEntry aNewFPEntry;
+    aNewFPEntry.m_xParaIterator = xFlatParaIterator;
+    aNewFPEntry.m_xPara         = xFlatPara;
+    aNewFPEntry.m_aDocId        = rDocId;
+    aNewFPEntry.m_nStartIndex   = nStartIndex;
+    aNewFPEntry.m_bAutomatic    = bAutomatic;
+
+    // add new entry to the end of this queue
+    ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+    if (!m_thread)
+        m_thread = osl_createThread( lcl_workerfunc, this );
+    m_aFPEntriesQueue.push_back( aNewFPEntry );
+
+    // wake up the thread in order to do grammar checking
+    m_aWakeUpThread.set();
+}
+
+
+void GrammarCheckingIterator::ProcessResult(
+    const linguistic2::ProofreadingResult &rRes,
+    const uno::Reference< text::XFlatParagraphIterator > &rxFlatParagraphIterator,
+    bool bIsAutomaticChecking )
+{
+    DBG_ASSERT( rRes.xFlatParagraph.is(), "xFlatParagraph is missing" );
+     //no guard necessary as no members are used
+    bool bContinueWithNextPara = false;
+    if (!rRes.xFlatParagraph.is() || rRes.xFlatParagraph->isModified())
+    {
+        // if paragraph was modified/deleted meanwhile continue with the next one...
+        bContinueWithNextPara = true;
+    }
+    else    // paragraph is still unchanged...
+    {
+        // mark found errors...
+
+        sal_Int32 nTextLen = rRes.aText.getLength();
+        bool bBoundariesOk = 0 <= rRes.nStartOfSentencePosition     && rRes.nStartOfSentencePosition <= nTextLen &&
+                             0 <= rRes.nBehindEndOfSentencePosition && rRes.nBehindEndOfSentencePosition <= nTextLen &&
+                             0 <= rRes.nStartOfNextSentencePosition && rRes.nStartOfNextSentencePosition <= nTextLen &&
+                             rRes.nStartOfSentencePosition      <= rRes.nBehindEndOfSentencePosition &&
+                             rRes.nBehindEndOfSentencePosition  <= rRes.nStartOfNextSentencePosition;
+        DBG_ASSERT( bBoundariesOk, "inconsistent sentence boundaries" );
+
+        uno::Reference< text::XMultiTextMarkup > xMulti( rRes.xFlatParagraph, uno::UNO_QUERY );
+        if (xMulti.is())    // use new API for markups
+        {
+            try
+            {
+                // length = number of found errors + 1 sentence markup
+                sal_Int32 nErrors = rRes.aErrors.getLength();
+                uno::Sequence< text::TextMarkupDescriptor > aDescriptors( nErrors + 1 );
+                text::TextMarkupDescriptor * pDescriptors = aDescriptors.getArray();
+
+                // at pos 0 .. nErrors-1 -> all grammar errors
+                for (const linguistic2::SingleProofreadingError &rError : rRes.aErrors)
+                {
+                    text::TextMarkupDescriptor &rDesc = *pDescriptors++;
+
+                    rDesc.nType   = rError.nErrorType;
+                    rDesc.nOffset = rError.nErrorStart;
+                    rDesc.nLength = rError.nErrorLength;
+
+                    // the proofreader may return SPELLING but right now our core
+                    // does only handle PROOFREADING if the result is from the proofreader...
+                    // (later on we may wish to color spelling errors found by the proofreader
+                    // differently for example. But no special handling right now.
+                    if (rDesc.nType == text::TextMarkupType::SPELLCHECK)
+                        rDesc.nType = text::TextMarkupType::PROOFREADING;
+
+                    uno::Reference< container::XStringKeyMap > xKeyMap(
+                        new LngXStringKeyMap());
+                    for( const beans::PropertyValue& rProperty : rError.aProperties )
+                    {
+                        if ( rProperty.Name == "LineColor" )
+                        {
+                            xKeyMap->insertValue(rProperty.Name,
+                                                 rProperty.Value);
+                            rDesc.xMarkupInfoContainer = xKeyMap;
+                        }
+                        else if ( rProperty.Name == "LineType" )
+                        {
+                            xKeyMap->insertValue(rProperty.Name,
+                                                 rProperty.Value);
+                            rDesc.xMarkupInfoContainer = xKeyMap;
+                        }
+                    }
+                }
+
+                // at pos nErrors -> sentence markup
+                // nSentenceLength: includes the white-spaces following the sentence end...
+                const sal_Int32 nSentenceLength = rRes.nStartOfNextSentencePosition - rRes.nStartOfSentencePosition;
+                pDescriptors->nType   = text::TextMarkupType::SENTENCE;
+                pDescriptors->nOffset = rRes.nStartOfSentencePosition;
+                pDescriptors->nLength = nSentenceLength;
+
+                xMulti->commitMultiTextMarkup( aDescriptors ) ;
+            }
+            catch (lang::IllegalArgumentException &)
+            {
+                TOOLS_WARN_EXCEPTION( "linguistic", "commitMultiTextMarkup" );
+            }
+        }
+
+        // other sentences left to be checked in this paragraph?
+        if (rRes.nStartOfNextSentencePosition < rRes.aText.getLength())
+        {
+            AddEntry( rxFlatParagraphIterator, rRes.xFlatParagraph, rRes.aDocumentIdentifier, rRes.nStartOfNextSentencePosition, bIsAutomaticChecking );
+        }
+        else    // current paragraph finished
+        {
+            // set "already checked" flag for the current flat paragraph
+            if (rRes.xFlatParagraph.is())
+                rRes.xFlatParagraph->setChecked( text::TextMarkupType::PROOFREADING, true );
+
+            bContinueWithNextPara = true;
+        }
+    }
+
+    if (bContinueWithNextPara)
+    {
+        // we need to continue with the next paragraph
+        uno::Reference< text::XFlatParagraph > xFlatParaNext;
+        if (rxFlatParagraphIterator.is())
+            xFlatParaNext = rxFlatParagraphIterator->getNextPara();
+        {
+            AddEntry( rxFlatParagraphIterator, xFlatParaNext, rRes.aDocumentIdentifier, 0, bIsAutomaticChecking );
+        }
+    }
+}
+
+
+uno::Reference< linguistic2::XProofreader > GrammarCheckingIterator::GetGrammarChecker(
+    const lang::Locale &rLocale )
+{
+    uno::Reference< linguistic2::XProofreader > xRes;
+
+    // ---- THREAD SAFE START ----
+    ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+
+    // check supported locales for each grammarchecker if not already done
+    if (!m_bGCServicesChecked)
+    {
+        GetConfiguredGCSvcs_Impl();
+        m_bGCServicesChecked = true;
+    }
+
+    const LanguageType nLang = LanguageTag::convertToLanguageType( rLocale, false);
+    GCImplNames_t::const_iterator aLangIt( m_aGCImplNamesByLang.find( nLang ) );
+    if (aLangIt != m_aGCImplNamesByLang.end())  // matching configured language found?
+    {
+        OUString aSvcImplName( aLangIt->second );
+        GCReferences_t::const_iterator aImplNameIt( m_aGCReferencesByService.find( aSvcImplName ) );
+        if (aImplNameIt != m_aGCReferencesByService.end())  // matching impl name found?
+        {
+            xRes = aImplNameIt->second;
+        }
+        else    // the service is to be instantiated here for the first time...
+        {
+            try
+            {
+                uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+                uno::Reference< linguistic2::XProofreader > xGC(
+                        xContext->getServiceManager()->createInstanceWithContext(aSvcImplName, xContext),
+                        uno::UNO_QUERY_THROW );
+                uno::Reference< linguistic2::XSupportedLocales > xSuppLoc( xGC, uno::UNO_QUERY_THROW );
+
+                if (xSuppLoc->hasLocale( rLocale ))
+                {
+                    m_aGCReferencesByService[ aSvcImplName ] = xGC;
+                    xRes = xGC;
+
+                    uno::Reference< linguistic2::XLinguServiceEventBroadcaster > xBC( xGC, uno::UNO_QUERY );
+                    if (xBC.is())
+                        xBC->addLinguServiceEventListener( this );
+                }
+                else
+                {
+                    SAL_WARN( "linguistic", "grammar checker does not support required locale" );
+                }
+            }
+            catch (uno::Exception &)
+            {
+                SAL_WARN( "linguistic", "instantiating grammar checker failed" );
+            }
+        }
+    }
+    // ---- THREAD SAFE END ----
+
+    return xRes;
+}
+
+static uno::Sequence<beans::PropertyValue>
+lcl_makeProperties(uno::Reference<text::XFlatParagraph> const& xFlatPara, sal_Int32 nProofInfo)
+{
+    uno::Reference<beans::XPropertySet> const xProps(
+            xFlatPara, uno::UNO_QUERY_THROW);
+    css::uno::Any a (nProofInfo);
+    return comphelper::InitPropertySequence({
+        { "FieldPositions", xProps->getPropertyValue("FieldPositions") },
+        { "FootnotePositions", xProps->getPropertyValue("FootnotePositions") },
+        { "ProofInfo", a }
+    });
+}
+
+void GrammarCheckingIterator::DequeueAndCheck()
+{
+    for (;;)
+    {
+        // ---- THREAD SAFE START ----
+        bool bQueueEmpty = false;
+        {
+            ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+            if (m_bEnd)
+            {
+                break;
+            }
+            bQueueEmpty = m_aFPEntriesQueue.empty();
+        }
+        // ---- THREAD SAFE END ----
+
+        if (!bQueueEmpty)
+        {
+            uno::Reference< text::XFlatParagraphIterator > xFPIterator;
+            uno::Reference< text::XFlatParagraph > xFlatPara;
+            FPEntry aFPEntryItem;
+            OUString aCurDocId;
+            // ---- THREAD SAFE START ----
+            {
+                ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+                aFPEntryItem        = m_aFPEntriesQueue.front();
+                xFPIterator         = aFPEntryItem.m_xParaIterator;
+                xFlatPara           = aFPEntryItem.m_xPara;
+                m_aCurCheckedDocId  = aFPEntryItem.m_aDocId;
+                aCurDocId = m_aCurCheckedDocId;
+
+                m_aFPEntriesQueue.pop_front();
+            }
+            // ---- THREAD SAFE END ----
+
+            if (xFlatPara.is() && xFPIterator.is())
+            {
+                try
+                {
+                    OUString aCurTxt( xFlatPara->getText() );
+                    lang::Locale aCurLocale = lcl_GetPrimaryLanguageOfSentence( xFlatPara, aFPEntryItem.m_nStartIndex );
+
+                    const bool bModified = xFlatPara->isModified();
+                    if (!bModified)
+                    {
+                        linguistic2::ProofreadingResult aRes;
+
+                        // ---- THREAD SAFE START ----
+                        {
+                            osl::ClearableMutexGuard aGuard(MyMutex());
+
+                            sal_Int32 nStartPos = aFPEntryItem.m_nStartIndex;
+                            sal_Int32 nSuggestedEnd
+                                = GetSuggestedEndOfSentence(aCurTxt, nStartPos, aCurLocale);
+                            DBG_ASSERT((nSuggestedEnd == 0 && aCurTxt.isEmpty())
+                                           || nSuggestedEnd > nStartPos,
+                                       "nSuggestedEndOfSentencePos calculation failed?");
+
+                            uno::Reference<linguistic2::XProofreader> xGC =
+                                GetGrammarChecker(aCurLocale);
+                            if (xGC.is())
+                            {
+                                aGuard.clear();
+                                uno::Sequence<beans::PropertyValue> const aProps(
+                                    lcl_makeProperties(xFlatPara, PROOFINFO_MARK_PARAGRAPH));
+                                aRes = xGC->doProofreading(aCurDocId, aCurTxt, aCurLocale,
+                                                           nStartPos, nSuggestedEnd, aProps);
+
+                                //!! work-around to prevent looping if the grammar checker
+                                //!! failed to properly identify the sentence end
+                                if (aRes.nBehindEndOfSentencePosition <= nStartPos
+                                    && aRes.nBehindEndOfSentencePosition != nSuggestedEnd)
+                                {
+                                    SAL_WARN(
+                                        "linguistic",
+                                        "!! Grammarchecker failed to provide end of sentence !!");
+                                    aRes.nBehindEndOfSentencePosition = nSuggestedEnd;
+                                }
+
+                                aRes.xFlatParagraph = xFlatPara;
+                                aRes.nStartOfSentencePosition = nStartPos;
+                            }
+                            else
+                            {
+                                // no grammar checker -> no error
+                                // but we need to provide the data below in order to continue with the next sentence
+                                aRes.aDocumentIdentifier = aCurDocId;
+                                aRes.xFlatParagraph = xFlatPara;
+                                aRes.aText = aCurTxt;
+                                aRes.aLocale = aCurLocale;
+                                aRes.nStartOfSentencePosition = nStartPos;
+                                aRes.nBehindEndOfSentencePosition = nSuggestedEnd;
+                            }
+                            aRes.nStartOfNextSentencePosition
+                                = lcl_SkipWhiteSpaces(aCurTxt, aRes.nBehindEndOfSentencePosition);
+                            aRes.nBehindEndOfSentencePosition = lcl_BacktraceWhiteSpaces(
+                                aCurTxt, aRes.nStartOfNextSentencePosition);
+
+                            //guard has to be cleared as ProcessResult calls out of this class
+                        }
+                        // ---- THREAD SAFE END ----
+                        ProcessResult( aRes, xFPIterator, aFPEntryItem.m_bAutomatic );
+                    }
+                    else
+                    {
+                        // the paragraph changed meanwhile... (and maybe is still edited)
+                        // thus we simply continue to ask for the next to be checked.
+                        uno::Reference< text::XFlatParagraph > xFlatParaNext( xFPIterator->getNextPara() );
+                        AddEntry( xFPIterator, xFlatParaNext, aCurDocId, 0, aFPEntryItem.m_bAutomatic );
+                    }
+                }
+                catch (css::uno::Exception &)
+                {
+                    TOOLS_WARN_EXCEPTION("linguistic", "GrammarCheckingIterator::DequeueAndCheck ignoring");
+                }
+            }
+
+            // ---- THREAD SAFE START ----
+            {
+                ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+                m_aCurCheckedDocId.clear();
+            }
+            // ---- THREAD SAFE END ----
+        }
+        else
+        {
+            // ---- THREAD SAFE START ----
+            {
+                ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+                if (m_bEnd)
+                {
+                    break;
+                }
+                // Check queue state again
+                if (m_aFPEntriesQueue.empty())
+                    m_aWakeUpThread.reset();
+            }
+            // ---- THREAD SAFE END ----
+
+            //if the queue is empty
+            // IMPORTANT: Don't call condition.wait() with locked
+            // mutex. Otherwise you would keep out other threads
+            // to add entries to the queue! A condition is thread-
+            // safe implemented.
+            m_aWakeUpThread.wait();
+        }
+    }
+}
+
+
+void SAL_CALL GrammarCheckingIterator::startProofreading(
+    const uno::Reference< ::uno::XInterface > & xDoc,
+    const uno::Reference< text::XFlatParagraphIteratorProvider > & xIteratorProvider )
+{
+    // get paragraph to start checking with
+    const bool bAutomatic = true;
+    uno::Reference<text::XFlatParagraphIterator> xFPIterator = xIteratorProvider->getFlatParagraphIterator(
+            text::TextMarkupType::PROOFREADING, bAutomatic );
+    uno::Reference< text::XFlatParagraph > xPara( xFPIterator.is()? xFPIterator->getFirstPara() : nullptr );
+    uno::Reference< lang::XComponent > xComponent( xDoc, uno::UNO_QUERY );
+
+    // ---- THREAD SAFE START ----
+    ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+    if (xPara.is() && xComponent.is())
+    {
+        OUString aDocId = GetOrCreateDocId( xComponent );
+
+        // create new entry and add it to queue
+        AddEntry( xFPIterator, xPara, aDocId, 0, bAutomatic );
+    }
+    // ---- THREAD SAFE END ----
+}
+
+
+linguistic2::ProofreadingResult SAL_CALL GrammarCheckingIterator::checkSentenceAtPosition(
+    const uno::Reference< uno::XInterface >& xDoc,
+    const uno::Reference< text::XFlatParagraph >& xFlatPara,
+    const OUString& rText,
+    const lang::Locale&,
+    sal_Int32 nStartOfSentencePos,
+    sal_Int32 nSuggestedEndOfSentencePos,
+    sal_Int32 nErrorPosInPara )
+{
+    // for the context menu...
+
+    linguistic2::ProofreadingResult aRes;
+
+    uno::Reference< lang::XComponent > xComponent( xDoc, uno::UNO_QUERY );
+    if (xFlatPara.is() && xComponent.is() &&
+        ( nErrorPosInPara < 0 || nErrorPosInPara < rText.getLength()))
+    {
+        // iterate through paragraph until we find the sentence we are interested in
+        linguistic2::ProofreadingResult aTmpRes;
+        sal_Int32 nStartPos = nStartOfSentencePos >= 0 ? nStartOfSentencePos : 0;
+
+        bool bFound = false;
+        do
+        {
+            lang::Locale aCurLocale = lcl_GetPrimaryLanguageOfSentence( xFlatPara, nStartPos );
+            sal_Int32 nOldStartOfSentencePos = nStartPos;
+            uno::Reference< linguistic2::XProofreader > xGC;
+            OUString aDocId;
+
+            // ---- THREAD SAFE START ----
+            {
+                ::osl::ClearableGuard< ::osl::Mutex > aGuard( MyMutex() );
+                aDocId = GetOrCreateDocId( xComponent );
+                nSuggestedEndOfSentencePos = GetSuggestedEndOfSentence( rText, nStartPos, aCurLocale );
+                DBG_ASSERT( nSuggestedEndOfSentencePos > nStartPos, "nSuggestedEndOfSentencePos calculation failed?" );
+
+                xGC = GetGrammarChecker( aCurLocale );
+            }
+            // ---- THREAD SAFE START ----
+            sal_Int32 nEndPos = -1;
+            if (xGC.is())
+            {
+                uno::Sequence<beans::PropertyValue> const aProps(
+                        lcl_makeProperties(xFlatPara, PROOFINFO_GET_PROOFRESULT));
+                aTmpRes = xGC->doProofreading( aDocId, rText,
+                    aCurLocale, nStartPos, nSuggestedEndOfSentencePos, aProps );
+
+                //!! work-around to prevent looping if the grammar checker
+                //!! failed to properly identify the sentence end
+                if (aTmpRes.nBehindEndOfSentencePosition <= nStartPos)
+                {
+                    SAL_WARN( "linguistic", "!! Grammarchecker failed to provide end of sentence !!" );
+                    aTmpRes.nBehindEndOfSentencePosition = nSuggestedEndOfSentencePos;
+                }
+
+                aTmpRes.xFlatParagraph           = xFlatPara;
+                aTmpRes.nStartOfSentencePosition = nStartPos;
+                nEndPos = aTmpRes.nBehindEndOfSentencePosition;
+
+                if ((nErrorPosInPara< 0 || nStartPos <= nErrorPosInPara) && nErrorPosInPara < nEndPos)
+                    bFound = true;
+            }
+            if (nEndPos == -1) // no result from grammar checker
+                nEndPos = nSuggestedEndOfSentencePos;
+            nStartPos = lcl_SkipWhiteSpaces( rText, nEndPos );
+            aTmpRes.nBehindEndOfSentencePosition = nEndPos;
+            aTmpRes.nStartOfNextSentencePosition = nStartPos;
+            aTmpRes.nBehindEndOfSentencePosition = lcl_BacktraceWhiteSpaces( rText, aTmpRes.nStartOfNextSentencePosition );
+
+            // prevent endless loop by forcefully advancing if needs be...
+            if (nStartPos <= nOldStartOfSentencePos)
+            {
+                SAL_WARN( "linguistic", "end-of-sentence detection failed?" );
+                nStartPos = nOldStartOfSentencePos + 1;
+            }
+        }
+        while (!bFound && nStartPos < rText.getLength());
+
+        if (bFound && !xFlatPara->isModified())
+            aRes = aTmpRes;
+    }
+
+    return aRes;
+}
+
+
+sal_Int32 GrammarCheckingIterator::GetSuggestedEndOfSentence(
+    const OUString &rText,
+    sal_Int32 nSentenceStartPos,
+    const lang::Locale &rLocale )
+{
+    // internal method; will always be called with locked mutex
+
+    if (!m_xBreakIterator.is())
+    {
+        uno::Reference< uno::XComponentContext > xContext = ::comphelper::getProcessComponentContext();
+        m_xBreakIterator = i18n::BreakIterator::create(xContext);
+    }
+    sal_Int32 nTextLen = rText.getLength();
+    sal_Int32 nEndPosition(0);
+    sal_Int32 nTmpStartPos = nSentenceStartPos;
+    do
+    {
+        sal_Int32 const nPrevEndPosition(nEndPosition);
+        nEndPosition = nTextLen;
+        if (nTmpStartPos < nTextLen)
+        {
+            nEndPosition = m_xBreakIterator->endOfSentence( rText, nTmpStartPos, rLocale );
+            if (nEndPosition <= nPrevEndPosition)
+            {
+                // fdo#68750 if there's no progress at all then presumably
+                // there's no end of sentence in this paragraph so just
+                // set the end position to end of paragraph
+                nEndPosition = nTextLen;
+            }
+        }
+        if (nEndPosition < 0)
+            nEndPosition = nTextLen;
+
+        ++nTmpStartPos;
+    }
+    while (nEndPosition <= nSentenceStartPos && nEndPosition < nTextLen);
+    if (nEndPosition > nTextLen)
+        nEndPosition = nTextLen;
+    return nEndPosition;
+}
+
+
+void SAL_CALL GrammarCheckingIterator::resetIgnoreRules(  )
+{
+    for (auto const& elem : m_aGCReferencesByService)
+    {
+        uno::Reference< linguistic2::XProofreader > xGC(elem.second);
+        if (xGC.is())
+            xGC->resetIgnoreRules();
+    }
+}
+
+
+sal_Bool SAL_CALL GrammarCheckingIterator::isProofreading(
+    const uno::Reference< uno::XInterface >& xDoc )
+{
+    // ---- THREAD SAFE START ----
+    ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+
+    bool bRes = false;
+
+    uno::Reference< lang::XComponent > xComponent( xDoc, uno::UNO_QUERY );
+    if (xComponent.is())
+    {
+        // if the component was already used in one of the two calls to check text
+        // i.e. in startGrammarChecking or checkGrammarAtPos it will be found in the
+        // m_aDocIdMap unless the document already disposed.
+        // If it is not found then it is not yet being checked (or requested to being checked)
+        const DocMap_t::const_iterator aIt( m_aDocIdMap.find( xComponent.get() ) );
+        if (aIt != m_aDocIdMap.end())
+        {
+            // check in document is checked automatically in the background...
+            OUString aDocId = aIt->second;
+            if (!m_aCurCheckedDocId.isEmpty() && m_aCurCheckedDocId == aDocId)
+            {
+                // an entry for that document was dequeued and is currently being checked.
+                bRes = true;
+            }
+            else
+            {
+                // we need to check if there is an entry for that document in the queue...
+                // That is the document is going to be checked sooner or later.
+
+                sal_Int32 nSize = m_aFPEntriesQueue.size();
+                for (sal_Int32 i = 0; i < nSize && !bRes; ++i)
+                {
+                    if (aDocId == m_aFPEntriesQueue[i].m_aDocId)
+                        bRes = true;
+                }
+            }
+        }
+    }
+    // ---- THREAD SAFE END ----
+
+    return bRes;
+}
+
+
+void SAL_CALL GrammarCheckingIterator::processLinguServiceEvent(
+    const linguistic2::LinguServiceEvent& rLngSvcEvent )
+{
+    if (rLngSvcEvent.nEvent != linguistic2::LinguServiceEventFlags::PROOFREAD_AGAIN)
+        return;
+
+    try
+    {
+         uno::Reference< uno::XInterface > xThis( static_cast< OWeakObject * >(this) );
+         linguistic2::LinguServiceEvent aEvent( xThis, linguistic2::LinguServiceEventFlags::PROOFREAD_AGAIN );
+         m_aNotifyListeners.notifyEach(
+                &linguistic2::XLinguServiceEventListener::processLinguServiceEvent,
+                aEvent);
+    }
+    catch (uno::RuntimeException &)
+    {
+         throw;
+    }
+    catch (const ::uno::Exception &)
+    {
+        // ignore
+        TOOLS_WARN_EXCEPTION("linguistic", "processLinguServiceEvent");
+    }
+}
+
+
+sal_Bool SAL_CALL GrammarCheckingIterator::addLinguServiceEventListener(
+    const uno::Reference< linguistic2::XLinguServiceEventListener >& xListener )
+{
+    if (xListener.is())
+    {
+        m_aNotifyListeners.addInterface( xListener );
+    }
+    return true;
+}
+
+
+sal_Bool SAL_CALL GrammarCheckingIterator::removeLinguServiceEventListener(
+    const uno::Reference< linguistic2::XLinguServiceEventListener >& xListener )
+{
+    if (xListener.is())
+    {
+        m_aNotifyListeners.removeInterface( xListener );
+    }
+    return true;
+}
+
+
+void SAL_CALL GrammarCheckingIterator::dispose()
+{
+    lang::EventObject aEvt( static_cast<linguistic2::XProofreadingIterator *>(this) );
+    m_aEventListeners.disposeAndClear( aEvt );
+
+    TerminateThread();
+
+    // ---- THREAD SAFE START ----
+    {
+        ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+
+        // release all UNO references
+
+        m_xBreakIterator.clear();
+
+        // clear containers with UNO references AND have those references released
+        GCReferences_t  aTmpEmpty1;
+        DocMap_t        aTmpEmpty2;
+        FPQueue_t       aTmpEmpty3;
+        m_aGCReferencesByService.swap( aTmpEmpty1 );
+        m_aDocIdMap.swap( aTmpEmpty2 );
+        m_aFPEntriesQueue.swap( aTmpEmpty3 );
+    }
+    // ---- THREAD SAFE END ----
+}
+
+
+void SAL_CALL GrammarCheckingIterator::addEventListener(
+    const uno::Reference< lang::XEventListener >& xListener )
+{
+    if (xListener.is())
+    {
+        m_aEventListeners.addInterface( xListener );
+    }
+}
+
+
+void SAL_CALL GrammarCheckingIterator::removeEventListener(
+    const uno::Reference< lang::XEventListener >& xListener )
+{
+    if (xListener.is())
+    {
+        m_aEventListeners.removeInterface( xListener );
+    }
+}
+
+
+void SAL_CALL GrammarCheckingIterator::disposing( const lang::EventObject &rSource )
+{
+    // if the component (document) is disposing release all references
+    //!! There is no need to remove entries from the queue that are from this document
+    //!! since the respectives xFlatParagraphs should become invalid (isModified() == true)
+    //!! and the call to xFlatParagraphIterator->getNextPara() will result in an empty reference.
+    //!! And if an entry is currently checked by a grammar checker upon return the results
+    //!! should be ignored.
+    //!! Also GetOrCreateDocId will not use that very same Id again...
+    //!! All of the above resulting in that we only have to get rid of the implementation pointer here.
+    uno::Reference< lang::XComponent > xDoc( rSource.Source, uno::UNO_QUERY );
+    if (xDoc.is())
+    {
+        // ---- THREAD SAFE START ----
+        ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+        m_aDocIdMap.erase( xDoc.get() );
+        // ---- THREAD SAFE END ----
+    }
+}
+
+
+uno::Reference< util::XChangesBatch > const & GrammarCheckingIterator::GetUpdateAccess() const
+{
+    if (!m_xUpdateAccess.is())
+    {
+        try
+        {
+            // get configuration provider
+            uno::Reference< uno::XComponentContext > xContext = comphelper::getProcessComponentContext();
+            uno::Reference< lang::XMultiServiceFactory > xConfigurationProvider =
+                    configuration::theDefaultProvider::get( xContext );
+
+            // get configuration update access
+            beans::PropertyValue aValue;
+            aValue.Name  = "nodepath";
+            aValue.Value <<= OUString("org.openoffice.Office.Linguistic/ServiceManager");
+            uno::Sequence< uno::Any > aProps{ uno::Any(aValue) };
+            m_xUpdateAccess.set(
+                    xConfigurationProvider->createInstanceWithArguments(
+                        "com.sun.star.configuration.ConfigurationUpdateAccess", aProps ),
+                        uno::UNO_QUERY_THROW );
+        }
+        catch (uno::Exception &)
+        {
+        }
+    }
+
+    return m_xUpdateAccess;
+}
+
+
+void GrammarCheckingIterator::GetConfiguredGCSvcs_Impl()
+{
+    GCImplNames_t   aTmpGCImplNamesByLang;
+
+    try
+    {
+        // get node names (locale iso strings) for configured grammar checkers
+        uno::Reference< container::XNameAccess > xNA( GetUpdateAccess(), uno::UNO_QUERY_THROW );
+        xNA.set( xNA->getByName( "GrammarCheckerList" ), uno::UNO_QUERY_THROW );
+        const uno::Sequence< OUString > aElementNames( xNA->getElementNames() );
+
+        for (const OUString& rElementName : aElementNames)
+        {
+            uno::Sequence< OUString > aImplNames;
+            uno::Any aTmp( xNA->getByName( rElementName ) );
+            if (aTmp >>= aImplNames)
+            {
+                if (aImplNames.hasElements())
+                {
+                    // only the first entry is used, there should be only one grammar checker per language
+                    const OUString aImplName( aImplNames[0] );
+                    const LanguageType nLang = LanguageTag::convertToLanguageType( rElementName );
+                    aTmpGCImplNamesByLang[ nLang ] = aImplName;
+                }
+            }
+            else
+            {
+                SAL_WARN( "linguistic", "failed to get aImplNames. Wrong type?" );
+            }
+        }
+    }
+    catch (uno::Exception const &)
+    {
+        TOOLS_WARN_EXCEPTION( "linguistic", "exception caught. Failed to get configured services" );
+    }
+
+    {
+        // ---- THREAD SAFE START ----
+        ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+        m_aGCImplNamesByLang     = aTmpGCImplNamesByLang;
+        // ---- THREAD SAFE END ----
+    }
+}
+
+
+sal_Bool SAL_CALL GrammarCheckingIterator::supportsService(
+    const OUString & rServiceName )
+{
+    return cppu::supportsService(this, rServiceName);
+}
+
+
+OUString SAL_CALL GrammarCheckingIterator::getImplementationName(  )
+{
+    return "com.sun.star.lingu2.ProofreadingIterator";
+}
+
+
+uno::Sequence< OUString > SAL_CALL GrammarCheckingIterator::getSupportedServiceNames(  )
+{
+    return  { "com.sun.star.linguistic2.ProofreadingIterator" };
+}
+
+
+void GrammarCheckingIterator::SetServiceList(
+    const lang::Locale &rLocale,
+    const uno::Sequence< OUString > &rSvcImplNames )
+{
+    ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    OUString aImplName;
+    if (rSvcImplNames.hasElements())
+        aImplName = rSvcImplNames[0];   // there is only one grammar checker per language
+
+    if (!LinguIsUnspecified(nLanguage) && nLanguage != LANGUAGE_DONTKNOW)
+    {
+        if (!aImplName.isEmpty())
+            m_aGCImplNamesByLang[ nLanguage ] = aImplName;
+        else
+            m_aGCImplNamesByLang.erase( nLanguage );
+    }
+}
+
+
+uno::Sequence< OUString > GrammarCheckingIterator::GetServiceList(
+    const lang::Locale &rLocale ) const
+{
+    ::osl::Guard< ::osl::Mutex > aGuard( MyMutex() );
+
+    OUString aImplName;     // there is only one grammar checker per language
+    LanguageType nLang  = LinguLocaleToLanguage( rLocale );
+    GCImplNames_t::const_iterator aIt( m_aGCImplNamesByLang.find( nLang ) );
+    if (aIt != m_aGCImplNamesByLang.end())
+        aImplName = aIt->second;
+
+    if (!aImplName.isEmpty())
+        return { aImplName };
+    return {};
+}
+
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+linguistic_GrammarCheckingIterator_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new GrammarCheckingIterator());
+}
+
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/gciterator.hxx b/linguistic/source/gciterator.hxx
new file mode 100644
index 000000000..c4cc076b3
--- /dev/null
+++ b/linguistic/source/gciterator.hxx
@@ -0,0 +1,211 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_GCITERATOR_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_GCITERATOR_HXX
+
+#include <com/sun/star/i18n/XBreakIterator.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XEventListener.hpp>
+#include <com/sun/star/linguistic2/XProofreadingIterator.hpp>
+#include <com/sun/star/linguistic2/XLinguServiceEventListener.hpp>
+#include <com/sun/star/linguistic2/XLinguServiceEventBroadcaster.hpp>
+#include <com/sun/star/util/XChangesBatch.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/weakref.hxx>
+#include <osl/mutex.hxx>
+#include <osl/conditn.hxx>
+#include <osl/thread.h>
+
+#include <com/sun/star/uno/Any.hxx>
+#include <comphelper/interfacecontainer3.hxx>
+#include <i18nlangtag/lang.h>
+
+#include <map>
+#include <deque>
+
+#include "defs.hxx"
+
+
+struct FPEntry
+{
+    // flat paragraph iterator
+    css::uno::Reference< css::text::XFlatParagraphIterator > m_xParaIterator;
+
+    // flat paragraph
+    css::uno::WeakReference< css::text::XFlatParagraph > m_xPara;
+
+    // document ID to identify different documents
+    OUString        m_aDocId;
+
+    // the starting position to be checked
+    sal_Int32       m_nStartIndex;
+
+    // the flag to identify whether the document does automatic grammar checking
+    bool            m_bAutomatic;
+
+    FPEntry()
+        : m_aDocId()
+        , m_nStartIndex( 0 )
+        , m_bAutomatic( false )
+    {
+    }
+};
+
+
+class GrammarCheckingIterator:
+    public cppu::WeakImplHelper
+    <
+        css::linguistic2::XProofreadingIterator,
+        css::linguistic2::XLinguServiceEventListener,
+        css::linguistic2::XLinguServiceEventBroadcaster,
+        css::lang::XComponent,
+        css::lang::XServiceInfo
+    >,
+    public LinguDispatcher
+{
+    //the queue is keeping track of all sentences to be checked
+    //every element of this queue is a FlatParagraphEntry struct-object
+    typedef std::deque< FPEntry > FPQueue_t;
+
+    // queue for entries to be processed
+    FPQueue_t       m_aFPEntriesQueue;
+
+    // the flag to end the endless loop
+    bool        m_bEnd;
+
+    // Note that it must be the pointer and not the uno-reference to check if it is the same implementation object
+    typedef std::map< XComponent *, OUString > DocMap_t;
+    DocMap_t        m_aDocIdMap;
+
+
+    // language -> implname mapping
+    typedef std::map< LanguageType, OUString > GCImplNames_t;
+    GCImplNames_t   m_aGCImplNamesByLang;
+
+    // implname -> UNO reference mapping
+    typedef std::map< OUString, css::uno::Reference< css::linguistic2::XProofreader > > GCReferences_t;
+    GCReferences_t  m_aGCReferencesByService;
+
+    OUString m_aCurCheckedDocId;
+    bool        m_bGCServicesChecked;
+    sal_Int32       m_nDocIdCounter;
+    osl::Condition  m_aWakeUpThread;
+    oslThread       m_thread;
+
+    //! beware of initialization order!
+    static osl::Mutex& MyMutex();
+    comphelper::OInterfaceContainerHelper3<css::lang::XEventListener>  m_aEventListeners;
+    comphelper::OInterfaceContainerHelper3<css::linguistic2::XLinguServiceEventListener>  m_aNotifyListeners;
+
+    css::uno::Reference< css::i18n::XBreakIterator > m_xBreakIterator;
+    mutable css::uno::Reference< css::util::XChangesBatch >  m_xUpdateAccess;
+
+    void TerminateThread();
+
+    sal_Int32 NextDocId();
+    OUString GetOrCreateDocId( const css::uno::Reference< css::lang::XComponent > &xComp );
+
+    void AddEntry(
+            const css::uno::WeakReference< css::text::XFlatParagraphIterator >& xFlatParaIterator,
+            const css::uno::WeakReference< css::text::XFlatParagraph >& xFlatPara,
+            const OUString &rDocId, sal_Int32 nStartIndex, bool bAutomatic );
+
+    void ProcessResult( const css::linguistic2::ProofreadingResult &rRes,
+            const css::uno::Reference< css::text::XFlatParagraphIterator > &rxFlatParagraphIterator,
+            bool bIsAutomaticChecking );
+
+    sal_Int32 GetSuggestedEndOfSentence( const OUString &rText, sal_Int32 nSentenceStartPos, const css::lang::Locale &rLocale );
+
+    void GetConfiguredGCSvcs_Impl();
+    css::uno::Reference< css::linguistic2::XProofreader > GetGrammarChecker( const css::lang::Locale & rLocale );
+
+    css::uno::Reference< css::util::XChangesBatch > const & GetUpdateAccess() const;
+
+    GrammarCheckingIterator( const GrammarCheckingIterator & ) = delete;
+    GrammarCheckingIterator & operator = ( const GrammarCheckingIterator & ) = delete;
+
+public:
+
+    void DequeueAndCheck();
+
+    explicit GrammarCheckingIterator();
+    virtual ~GrammarCheckingIterator() override;
+
+    // XProofreadingIterator
+    virtual void SAL_CALL startProofreading( const css::uno::Reference< css::uno::XInterface >& xDocument, const css::uno::Reference< css::text::XFlatParagraphIteratorProvider >& xIteratorProvider ) override;
+    virtual css::linguistic2::ProofreadingResult SAL_CALL checkSentenceAtPosition( const css::uno::Reference< css::uno::XInterface >& xDocument, const css::uno::Reference< css::text::XFlatParagraph >& xFlatParagraph, const OUString& aText, const css::lang::Locale& aLocale, ::sal_Int32 nStartOfSentencePosition, ::sal_Int32 nSuggestedBehindEndOfSentencePosition, ::sal_Int32 nErrorPositionInParagraph ) override;
+    virtual void SAL_CALL resetIgnoreRules(  ) override;
+    virtual sal_Bool SAL_CALL isProofreading( const css::uno::Reference< css::uno::XInterface >& xDocument ) override;
+
+    // XLinguServiceEventListener
+    virtual void SAL_CALL processLinguServiceEvent( const css::linguistic2::LinguServiceEvent& aLngSvcEvent ) override;
+
+    // XLinguServiceEventBroadcaster
+    virtual sal_Bool SAL_CALL addLinguServiceEventListener( const css::uno::Reference< css::linguistic2::XLinguServiceEventListener >& xLstnr ) override;
+    virtual sal_Bool SAL_CALL removeLinguServiceEventListener( const css::uno::Reference< css::linguistic2::XLinguServiceEventListener >& xLstnr ) override;
+
+    // XComponent
+    virtual void SAL_CALL dispose(  ) override;
+    virtual void SAL_CALL addEventListener( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;
+    virtual void SAL_CALL removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener ) override;
+
+    // XEventListener
+    virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName(  ) override;
+    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) override;
+
+    // LinguDispatcher
+    virtual void SetServiceList( const css::lang::Locale &rLocale, const css::uno::Sequence< OUString > &rSvcImplNames ) override;
+    virtual css::uno::Sequence< OUString > GetServiceList( const css::lang::Locale &rLocale ) const override;
+};
+
+
+/** Implementation of the css::container::XStringKeyMap interface
+ */
+class LngXStringKeyMap : public ::cppu::WeakImplHelper<css::container::XStringKeyMap>
+{
+public:
+    LngXStringKeyMap();
+
+    virtual css::uno::Any SAL_CALL getValue(const OUString& aKey) override;
+    virtual sal_Bool SAL_CALL hasValue(const OUString& aKey) override;
+    virtual void SAL_CALL insertValue(const OUString& aKey, const css::uno::Any& aValue) override;
+    virtual ::sal_Int32 SAL_CALL getCount() override;
+    virtual OUString SAL_CALL getKeyByIndex(::sal_Int32 nIndex) override;
+    virtual css::uno::Any SAL_CALL getValueByIndex(::sal_Int32 nIndex) override;
+
+private:
+    LngXStringKeyMap(LngXStringKeyMap const &) = delete;
+    void operator=(LngXStringKeyMap const &) = delete;
+
+    ~LngXStringKeyMap() override{};
+
+    std::map<OUString, css::uno::Any> maMap;
+};
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/hhconvdic.cxx b/linguistic/source/hhconvdic.cxx
new file mode 100644
index 000000000..d20088a10
--- /dev/null
+++ b/linguistic/source/hhconvdic.cxx
@@ -0,0 +1,120 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <unicode/uscript.h>
+#include <i18nlangtag/lang.h>
+#include <osl/mutex.hxx>
+
+#include <cppuhelper/factory.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <com/sun/star/linguistic2/ConversionDictionaryType.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+
+#include "hhconvdic.hxx"
+#include <linguistic/misc.hxx>
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+constexpr OUStringLiteral SN_HH_CONV_DICTIONARY = u"com.sun.star.linguistic2.HangulHanjaConversionDictionary";
+
+
+#include <com/sun/star/i18n/UnicodeScript.hpp>
+
+using namespace i18n;
+
+#define SCRIPT_OTHERS   0
+#define SCRIPT_HANJA    1
+#define SCRIPT_HANGUL   2
+
+// from i18npool/source/textconversion/textconversion_ko.cxx
+/// @throws RuntimeException
+static sal_Int16 checkScriptType(sal_Unicode c)
+{
+  UErrorCode status = U_ZERO_ERROR;
+
+  UScriptCode scriptCode = uscript_getScript(c, &status);
+
+  if ( !U_SUCCESS(status) ) throw RuntimeException();
+
+  return scriptCode == USCRIPT_HANGUL ? SCRIPT_HANGUL :
+            scriptCode == USCRIPT_HAN ? SCRIPT_HANJA : SCRIPT_OTHERS;
+}
+
+
+static bool TextIsAllScriptType( std::u16string_view rTxt, sal_Int16 nScriptType )
+{
+    for (size_t i = 0; i < rTxt.size(); ++i)
+    {
+        if (checkScriptType( rTxt[i]) != nScriptType)
+            return false;
+    }
+    return true;
+}
+
+
+HHConvDic::HHConvDic( const OUString &rName, const OUString &rMainURL ) :
+    ConvDic( rName, LANGUAGE_KOREAN, ConversionDictionaryType::HANGUL_HANJA, true, rMainURL )
+{
+}
+
+
+HHConvDic::~HHConvDic()
+{
+}
+
+
+void SAL_CALL HHConvDic::addEntry(
+        const OUString& aLeftText,
+        const OUString& aRightText )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if ((aLeftText.getLength() != aRightText.getLength()) ||
+        !TextIsAllScriptType( aLeftText,  SCRIPT_HANGUL ) ||
+        !TextIsAllScriptType( aRightText, SCRIPT_HANJA ))
+        throw IllegalArgumentException();
+    ConvDic::addEntry( aLeftText, aRightText );
+}
+
+
+OUString SAL_CALL HHConvDic::getImplementationName(  )
+{
+    return "com.sun.star.lingu2.HHConvDic";
+}
+
+
+sal_Bool SAL_CALL HHConvDic::supportsService( const OUString& rServiceName )
+{
+    return cppu::supportsService(this, rServiceName);
+}
+
+
+uno::Sequence< OUString > SAL_CALL HHConvDic::getSupportedServiceNames(  )
+{
+    return { SN_CONV_DICTIONARY, SN_HH_CONV_DICTIONARY };
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/hhconvdic.hxx b/linguistic/source/hhconvdic.hxx
new file mode 100644
index 000000000..107607be6
--- /dev/null
+++ b/linguistic/source/hhconvdic.hxx
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_HHCONVDIC_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_HHCONVDIC_HXX
+
+#include "convdic.hxx"
+
+class HHConvDic : public ConvDic
+{
+    HHConvDic(const HHConvDic&) = delete;
+    HHConvDic& operator=(const HHConvDic&) = delete;
+
+public:
+    HHConvDic(const OUString& rName, const OUString& rMainURL);
+    virtual ~HHConvDic() override;
+
+    // XConversionDictionary
+    virtual void SAL_CALL addEntry(const OUString& aLeftText, const OUString& aRightText) override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+    virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/hyphdsp.cxx b/linguistic/source/hyphdsp.cxx
new file mode 100644
index 000000000..6113960d4
--- /dev/null
+++ b/linguistic/source/hyphdsp.cxx
@@ -0,0 +1,705 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+#include <sal/log.hxx>
+
+#include <algorithm>
+#if OSL_DEBUG_LEVEL > 0
+#include <utility>
+#endif
+
+#include <cppuhelper/factory.hxx>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/linguistic2/XLinguProperties.hpp>
+#include <com/sun/star/linguistic2/XLinguServiceEventBroadcaster.hpp>
+#include <rtl/ustrbuf.hxx>
+#include <i18nlangtag/lang.h>
+#include <unotools/localedatawrapper.hxx>
+#include <tools/debug.hxx>
+#include <svl/lngmisc.hxx>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/sequence.hxx>
+#include <osl/mutex.hxx>
+
+#include "hyphdsp.hxx"
+#include <linguistic/hyphdta.hxx>
+#include <linguistic/misc.hxx>
+#include "lngsvcmgr.hxx"
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+HyphenatorDispatcher::HyphenatorDispatcher( LngSvcMgr &rLngSvcMgr ) :
+    rMgr    (rLngSvcMgr)
+{
+}
+
+
+HyphenatorDispatcher::~HyphenatorDispatcher()
+{
+    ClearSvcList();
+}
+
+
+void HyphenatorDispatcher::ClearSvcList()
+{
+    // release memory for each table entry
+    HyphSvcByLangMap_t().swap(aSvcMap);
+}
+
+
+Reference<XHyphenatedWord>  HyphenatorDispatcher::buildHyphWord(
+            const OUString& rOrigWord,
+            const Reference<XDictionaryEntry> &xEntry,
+            LanguageType nLang, sal_Int16 nMaxLeading )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Reference< XHyphenatedWord > xRes;
+
+    if (xEntry.is())
+    {
+        OUString aText( xEntry->getDictionaryWord() );
+        sal_Int32 nTextLen = aText.getLength();
+
+        // trailing '=' means "hyphenation should not be possible"
+        if (nTextLen > 0  &&  aText[ nTextLen - 1 ] != '=' && aText[ nTextLen - 1 ] != '[')
+        {
+            sal_Int16 nHyphenationPos = -1;
+            sal_Int16 nOrigHyphPos = -1;
+
+            OUStringBuffer aTmp( nTextLen );
+            bool  bSkip = false;
+            bool  bSkip2 = false;
+            sal_Int32 nHyphIdx = -1;
+            sal_Int32 nLeading = 0;
+            for (sal_Int32 i = 0;  i < nTextLen;  i++)
+            {
+                sal_Unicode cTmp = aText[i];
+                if (cTmp == '[' || cTmp == ']')
+                    bSkip2 = !bSkip2;
+                if (cTmp != '=' && !bSkip2 && cTmp != ']')
+                {
+                    aTmp.append( cTmp );
+                    nLeading++;
+                    bSkip = false;
+                    nHyphIdx++;
+                }
+                else
+                {
+                    if (!bSkip  &&  nHyphIdx >= 0)
+                    {
+                        if (nLeading <= nMaxLeading) {
+                            nHyphenationPos = static_cast<sal_Int16>(nHyphIdx);
+                            nOrigHyphPos = i;
+                        }
+                    }
+                    bSkip = true;   //! multiple '=' should count as one only
+                }
+            }
+
+            if (nHyphenationPos > 0)
+            {
+#if OSL_DEBUG_LEVEL > 0
+                {
+                    if (std::u16string_view(aTmp) != rOrigWord)
+                    {
+                        // both words should only differ by a having a trailing '.'
+                        // character or not...
+                        std::u16string_view aShorter(aTmp), aLonger(rOrigWord);
+                        if (aTmp.getLength() > rOrigWord.getLength())
+                            std::swap(aShorter, aLonger);
+                        sal_Int32 nS = aShorter.size();
+                        sal_Int32 nL = aLonger.size();
+                        if (nS > 0 && nL > 0)
+                        {
+                            assert( ((nS + 1 == nL) && aLonger[nL-1] == '.') && "HyphenatorDispatcher::buildHyphWord: unexpected difference between words!" );
+                        }
+                    }
+                }
+#endif
+                sal_Int32 nHyphenPos = -1;
+                if (aText[ nOrigHyphPos ] == '[')  // alternative hyphenation
+                {
+                    sal_Int16 split = 0;
+                    sal_Unicode c = aText [ nOrigHyphPos + 1 ];
+                    sal_Int32 endhyphpat = aText.indexOf( ']', nOrigHyphPos );
+                    if ('0' <= c && c <= '9')
+                    {
+                        split = c - '0';
+                        nOrigHyphPos++;
+                    }
+                    if (endhyphpat > -1)
+                    {
+                        OUStringBuffer aTmp2 ( aTmp.copy(0, std::max (nHyphenationPos + 1 - split, 0) ) );
+                        aTmp2.append( aText.subView( nOrigHyphPos + 1, endhyphpat - nOrigHyphPos - 1) );
+                        nHyphenPos = aTmp2.getLength();
+                        aTmp2.append( aTmp.subView( nHyphenationPos + 1 ) );
+                        //! take care of #i22591#
+                        if (rOrigWord[ rOrigWord.getLength() - 1 ] == '.')
+                            aTmp2.append( '.' );
+                        aText = aTmp2.makeStringAndClear();
+                    }
+                }
+                if (nHyphenPos == -1)
+                    aText = rOrigWord;
+
+                xRes = new HyphenatedWord( rOrigWord, nLang, nHyphenationPos,
+                                aText, (nHyphenPos > -1) ? nHyphenPos - 1 : nHyphenationPos);
+            }
+        }
+    }
+
+    return xRes;
+}
+
+
+Reference< XPossibleHyphens > HyphenatorDispatcher::buildPossHyphens(
+            const Reference< XDictionaryEntry > &xEntry, LanguageType nLanguage )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Reference<XPossibleHyphens> xRes;
+
+    if (xEntry.is())
+    {
+        // text with hyphenation info
+        OUString aText( xEntry->getDictionaryWord() );
+        sal_Int32 nTextLen = aText.getLength();
+
+        // trailing '=' means "hyphenation should not be possible"
+        if (nTextLen > 0  &&  aText[ nTextLen - 1 ] != '=' && aText[ nTextLen - 1 ] != '[')
+        {
+            // sequence to hold hyphenation positions
+            Sequence< sal_Int16 > aHyphPos( nTextLen );
+            sal_Int16 *pPos = aHyphPos.getArray();
+            sal_Int32 nHyphCount = 0;
+
+            OUStringBuffer aTmp( nTextLen );
+            bool  bSkip = false;
+            bool  bSkip2 = false;
+            sal_Int32 nHyphIdx = -1;
+            for (sal_Int32 i = 0;  i < nTextLen;  i++)
+            {
+                sal_Unicode cTmp = aText[i];
+                if (cTmp == '[' || cTmp == ']')
+                    bSkip2 = !bSkip2;
+                if (cTmp != '=' && !bSkip2 && cTmp != ']')
+                {
+                    aTmp.append( cTmp );
+                    bSkip = false;
+                    nHyphIdx++;
+                }
+                else
+                {
+                    if (!bSkip  &&  nHyphIdx >= 0)
+                        pPos[ nHyphCount++ ] = static_cast<sal_Int16>(nHyphIdx);
+                    bSkip = true;   //! multiple '=' should count as one only
+                }
+            }
+
+            // ignore (multiple) trailing '='
+            if (bSkip  &&  nHyphIdx >= 0)
+            {
+                nHyphCount--;
+            }
+            DBG_ASSERT( nHyphCount >= 0, "lng : invalid hyphenation count");
+
+            if (nHyphCount > 0)
+            {
+                aHyphPos.realloc( nHyphCount );
+                xRes = new PossibleHyphens( aTmp.makeStringAndClear(), nLanguage,
+                                aText, aHyphPos );
+            }
+        }
+    }
+
+    return xRes;
+}
+
+
+Sequence< Locale > SAL_CALL HyphenatorDispatcher::getLocales()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    std::vector<Locale> aLocales;
+    aLocales.reserve(aSvcMap.size());
+
+    std::transform(aSvcMap.begin(), aSvcMap.end(), std::back_inserter(aLocales),
+        [](HyphSvcByLangMap_t::const_reference elem) { return LanguageTag::convertToLocale(elem.first); });
+
+    return comphelper::containerToSequence(aLocales);
+}
+
+
+sal_Bool SAL_CALL HyphenatorDispatcher::hasLocale(const Locale& rLocale)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    HyphSvcByLangMap_t::const_iterator aIt( aSvcMap.find( LinguLocaleToLanguage( rLocale ) ) );
+    return aIt != aSvcMap.end();
+}
+
+
+Reference< XHyphenatedWord > SAL_CALL
+    HyphenatorDispatcher::hyphenate(
+            const OUString& rWord, const Locale& rLocale, sal_Int16 nMaxLeading,
+            const css::uno::Sequence< ::css::beans::PropertyValue >& rProperties )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Reference< XHyphenatedWord >    xRes;
+
+    sal_Int32 nWordLen = rWord.getLength();
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    if (LinguIsUnspecified(nLanguage) || !nWordLen ||
+        nMaxLeading == 0 || nMaxLeading == nWordLen)
+        return xRes;
+
+    // search for entry with that language
+    HyphSvcByLangMap_t::iterator    aIt( aSvcMap.find( nLanguage ) );
+    LangSvcEntries_Hyph     *pEntry = aIt != aSvcMap.end() ? aIt->second.get() : nullptr;
+
+    bool bWordModified = false;
+    if (!pEntry || (nMaxLeading < 0 || nMaxLeading > nWordLen))
+    {
+        return nullptr;
+    }
+    else
+    {
+        OUString aChkWord( rWord );
+
+        // replace typographical apostroph by ascii apostroph
+        OUString aSingleQuote( GetLocaleDataWrapper( nLanguage ).getQuotationMarkEnd() );
+        DBG_ASSERT( 1 == aSingleQuote.getLength(), "unexpected length of quotation mark" );
+        if (!aSingleQuote.isEmpty())
+            aChkWord = aChkWord.replace( aSingleQuote[0], '\'' );
+
+        bWordModified |= RemoveHyphens( aChkWord );
+        if (IsIgnoreControlChars( rProperties, GetPropSet() ))
+            bWordModified |= RemoveControlChars( aChkWord );
+        sal_Int16 nChkMaxLeading = static_cast<sal_Int16>(GetPosInWordToCheck( rWord, nMaxLeading ));
+
+        // check for results from (positive) dictionaries which have precedence!
+        Reference< XDictionaryEntry > xEntry;
+
+        if (GetDicList().is()  &&  IsUseDicList( rProperties, GetPropSet() ))
+        {
+            xEntry = GetDicList()->queryDictionaryEntry( aChkWord, rLocale,
+                        true, false );
+        }
+
+        if (xEntry.is())
+        {
+            //! because queryDictionaryEntry (in the end DictionaryNeo::getEntry)
+            //! does not distinguish between "XYZ" and "XYZ." in order to avoid
+            //! to require them as different entry we have to supply the
+            //! original word here as well so it can be used in th result
+            //! otherwise a strange effect may occur (see #i22591#)
+            xRes = buildHyphWord( rWord, xEntry, nLanguage, nChkMaxLeading );
+        }
+        else
+        {
+            sal_Int32 nLen = pEntry->aSvcImplNames.hasElements() ? 1 : 0;
+            DBG_ASSERT( pEntry->nLastTriedSvcIndex < nLen,
+                    "lng : index out of range");
+
+            sal_Int32 i = 0;
+            Reference< XHyphenator > xHyph;
+            if (pEntry->aSvcRefs.hasElements())
+                xHyph = pEntry->aSvcRefs[0];
+
+            // try already instantiated service
+            if (i <= pEntry->nLastTriedSvcIndex)
+            {
+                if (xHyph.is()  &&  xHyph->hasLocale( rLocale ))
+                    xRes = xHyph->hyphenate( aChkWord, rLocale, nChkMaxLeading,
+                                            rProperties );
+                ++i;
+            }
+            else if (pEntry->nLastTriedSvcIndex < nLen - 1)
+            // instantiate services and try it
+            {
+                Reference< XHyphenator > *pRef = pEntry->aSvcRefs.getArray();
+
+                Reference< XComponentContext > xContext(
+                    comphelper::getProcessComponentContext() );
+
+                // build service initialization argument
+                Sequence< Any > aArgs(2);
+                aArgs.getArray()[0] <<= GetPropSet();
+
+                // create specific service via it's implementation name
+                try
+                {
+                    xHyph = Reference< XHyphenator >(
+                                xContext->getServiceManager()->createInstanceWithArgumentsAndContext(
+                                    pEntry->aSvcImplNames[0], aArgs, xContext ),
+                                UNO_QUERY );
+                }
+                catch (uno::Exception &)
+                {
+                    SAL_WARN( "linguistic", "createInstanceWithArguments failed" );
+                }
+                pRef [i] = xHyph;
+
+                Reference< XLinguServiceEventBroadcaster >
+                        xBroadcaster( xHyph, UNO_QUERY );
+                if (xBroadcaster.is())
+                    rMgr.AddLngSvcEvtBroadcaster( xBroadcaster );
+
+                if (xHyph.is()  &&  xHyph->hasLocale( rLocale ))
+                    xRes = xHyph->hyphenate( aChkWord, rLocale, nChkMaxLeading,
+                                            rProperties );
+
+                pEntry->nLastTriedSvcIndex = static_cast<sal_Int16>(i);
+                ++i;
+
+                // if language is not supported by the services
+                // remove it from the list.
+                if (xHyph.is()  &&  !xHyph->hasLocale( rLocale ))
+                    aSvcMap.erase( nLanguage );
+            }
+        }   // if (xEntry.is())
+    }
+
+    if (bWordModified  &&  xRes.is())
+        xRes = RebuildHyphensAndControlChars( rWord, xRes );
+
+    if (xRes.is()  &&  xRes->getWord() != rWord)
+    {
+        xRes = new HyphenatedWord( rWord, nLanguage, xRes->getHyphenationPos(),
+                                   xRes->getHyphenatedWord(),
+                                   xRes->getHyphenPos() );
+    }
+
+    return xRes;
+}
+
+
+Reference< XHyphenatedWord > SAL_CALL
+    HyphenatorDispatcher::queryAlternativeSpelling(
+            const OUString& rWord, const Locale& rLocale, sal_Int16 nIndex,
+            const css::uno::Sequence< ::css::beans::PropertyValue >& rProperties )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Reference< XHyphenatedWord >    xRes;
+
+    sal_Int32 nWordLen = rWord.getLength();
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    if (LinguIsUnspecified(nLanguage) || !nWordLen)
+        return xRes;
+
+    // search for entry with that language
+    HyphSvcByLangMap_t::iterator    aIt( aSvcMap.find( nLanguage ) );
+    LangSvcEntries_Hyph     *pEntry = aIt != aSvcMap.end() ? aIt->second.get() : nullptr;
+
+    bool bWordModified = false;
+    if (!pEntry || 0 > nIndex || nIndex > nWordLen - 2)
+    {
+        return nullptr;
+    }
+    else
+    {
+        OUString aChkWord( rWord );
+
+        // replace typographical apostroph by ascii apostroph
+        OUString aSingleQuote( GetLocaleDataWrapper( nLanguage ).getQuotationMarkEnd() );
+        DBG_ASSERT( 1 == aSingleQuote.getLength(), "unexpected length of quotation mark" );
+        if (!aSingleQuote.isEmpty())
+            aChkWord = aChkWord.replace( aSingleQuote[0], '\'' );
+
+        bWordModified |= RemoveHyphens( aChkWord );
+        if (IsIgnoreControlChars( rProperties, GetPropSet() ))
+            bWordModified |= RemoveControlChars( aChkWord );
+        sal_Int16 nChkIndex = static_cast<sal_Int16>(GetPosInWordToCheck( rWord, nIndex ));
+
+        // check for results from (positive) dictionaries which have precedence!
+        Reference< XDictionaryEntry > xEntry;
+
+        if (GetDicList().is()  &&  IsUseDicList( rProperties, GetPropSet() ))
+        {
+            xEntry = GetDicList()->queryDictionaryEntry( aChkWord, rLocale,
+                        true, false );
+        }
+
+        if (xEntry.is())
+        {
+            xRes = buildHyphWord(aChkWord, xEntry, nLanguage, nIndex + 1);
+            if (xRes.is() && xRes->isAlternativeSpelling() && xRes->getHyphenationPos() == nIndex)
+                    return xRes;
+        }
+        else
+        {
+            sal_Int32 nLen = pEntry->aSvcImplNames.hasElements() ? 1 : 0;
+            DBG_ASSERT( pEntry->nLastTriedSvcIndex < nLen,
+                    "lng : index out of range");
+
+            sal_Int32 i = 0;
+            Reference< XHyphenator > xHyph;
+            if (pEntry->aSvcRefs.hasElements())
+                xHyph = pEntry->aSvcRefs[0];
+
+            // try already instantiated service
+            if (i <= pEntry->nLastTriedSvcIndex)
+            {
+                if (xHyph.is()  &&  xHyph->hasLocale( rLocale ))
+                    xRes = xHyph->queryAlternativeSpelling( aChkWord, rLocale,
+                                nChkIndex, rProperties );
+                ++i;
+            }
+            else if (pEntry->nLastTriedSvcIndex < nLen - 1)
+            // instantiate services and try it
+            {
+                Reference< XHyphenator > *pRef = pEntry->aSvcRefs.getArray();
+
+                Reference< XComponentContext > xContext(
+                    comphelper::getProcessComponentContext() );
+
+                // build service initialization argument
+                Sequence< Any > aArgs(2);
+                aArgs.getArray()[0] <<= GetPropSet();
+
+                // create specific service via it's implementation name
+                try
+                {
+                    xHyph = Reference< XHyphenator >(
+                                xContext->getServiceManager()->createInstanceWithArgumentsAndContext(
+                                    pEntry->aSvcImplNames[0], aArgs, xContext ), UNO_QUERY );
+                }
+                catch (uno::Exception &)
+                {
+                    SAL_WARN( "linguistic", "createInstanceWithArguments failed" );
+                }
+                pRef [i] = xHyph;
+
+                Reference< XLinguServiceEventBroadcaster >
+                        xBroadcaster( xHyph, UNO_QUERY );
+                if (xBroadcaster.is())
+                    rMgr.AddLngSvcEvtBroadcaster( xBroadcaster );
+
+                if (xHyph.is()  &&  xHyph->hasLocale( rLocale ))
+                    xRes = xHyph->queryAlternativeSpelling( aChkWord, rLocale,
+                                nChkIndex, rProperties );
+
+                pEntry->nLastTriedSvcIndex = static_cast<sal_Int16>(i);
+                ++i;
+
+                // if language is not supported by the services
+                // remove it from the list.
+                if (xHyph.is()  &&  !xHyph->hasLocale( rLocale ))
+                    aSvcMap.erase( nLanguage );
+            }
+        }   // if (xEntry.is())
+    }
+
+    if (bWordModified  &&  xRes.is())
+        xRes = RebuildHyphensAndControlChars( rWord, xRes );
+
+    if (xRes.is()  &&  xRes->getWord() != rWord)
+    {
+        xRes = new HyphenatedWord( rWord, nLanguage, xRes->getHyphenationPos(),
+                                   xRes->getHyphenatedWord(),
+                                   xRes->getHyphenPos() );
+    }
+
+    return xRes;
+}
+
+
+Reference< XPossibleHyphens > SAL_CALL
+    HyphenatorDispatcher::createPossibleHyphens(
+            const OUString& rWord, const Locale& rLocale,
+            const css::uno::Sequence< ::css::beans::PropertyValue >& rProperties )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Reference< XPossibleHyphens >   xRes;
+
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    if (LinguIsUnspecified(nLanguage) || rWord.isEmpty())
+        return xRes;
+
+    // search for entry with that language
+    HyphSvcByLangMap_t::iterator    aIt( aSvcMap.find( nLanguage ) );
+    LangSvcEntries_Hyph     *pEntry = aIt != aSvcMap.end() ? aIt->second.get() : nullptr;
+
+    if (pEntry)
+    {
+        OUString aChkWord( rWord );
+
+        // replace typographical apostroph by ascii apostroph
+        OUString aSingleQuote( GetLocaleDataWrapper( nLanguage ).getQuotationMarkEnd() );
+        DBG_ASSERT( 1 == aSingleQuote.getLength(), "unexpected length of quotation mark" );
+        if (!aSingleQuote.isEmpty())
+            aChkWord = aChkWord.replace( aSingleQuote[0], '\'' );
+
+        RemoveHyphens( aChkWord );
+        if (IsIgnoreControlChars( rProperties, GetPropSet() ))
+            RemoveControlChars( aChkWord );
+
+        // check for results from (positive) dictionaries which have precedence!
+        Reference< XDictionaryEntry > xEntry;
+
+        if (GetDicList().is()  &&  IsUseDicList( rProperties, GetPropSet() ))
+        {
+            xEntry = GetDicList()->queryDictionaryEntry( aChkWord, rLocale,
+                        true, false );
+        }
+
+        if (xEntry.is())
+        {
+            xRes = buildPossHyphens( xEntry, nLanguage );
+        }
+        else
+        {
+            sal_Int32 nLen = pEntry->aSvcImplNames.hasElements() ? 1 : 0;
+            DBG_ASSERT( pEntry->nLastTriedSvcIndex < nLen,
+                    "lng : index out of range");
+
+            sal_Int32 i = 0;
+            Reference< XHyphenator > xHyph;
+            if (pEntry->aSvcRefs.hasElements())
+                xHyph = pEntry->aSvcRefs[0];
+
+            // try already instantiated service
+            if (i <= pEntry->nLastTriedSvcIndex)
+            {
+                if (xHyph.is()  &&  xHyph->hasLocale( rLocale ))
+                    xRes = xHyph->createPossibleHyphens( aChkWord, rLocale,
+                                rProperties );
+                ++i;
+            }
+            else if (pEntry->nLastTriedSvcIndex < nLen - 1)
+            // instantiate services and try it
+            {
+                Reference< XHyphenator > *pRef = pEntry->aSvcRefs.getArray();
+
+                Reference< XComponentContext > xContext(
+                    comphelper::getProcessComponentContext() );
+
+                // build service initialization argument
+                Sequence< Any > aArgs(2);
+                aArgs.getArray()[0] <<= GetPropSet();
+
+                // create specific service via it's implementation name
+                try
+                {
+                    xHyph.set( xContext->getServiceManager()->createInstanceWithArgumentsAndContext(
+                                   pEntry->aSvcImplNames[0], aArgs, xContext ),
+                               UNO_QUERY );
+                }
+                catch (uno::Exception &)
+                {
+                    SAL_WARN( "linguistic", "createWithArguments failed" );
+                }
+                pRef [i] = xHyph;
+
+                Reference< XLinguServiceEventBroadcaster >
+                        xBroadcaster( xHyph, UNO_QUERY );
+                if (xBroadcaster.is())
+                    rMgr.AddLngSvcEvtBroadcaster( xBroadcaster );
+
+                if (xHyph.is()  &&  xHyph->hasLocale( rLocale ))
+                    xRes = xHyph->createPossibleHyphens( aChkWord, rLocale, rProperties );
+
+                pEntry->nLastTriedSvcIndex = static_cast<sal_Int16>(i);
+                ++i;
+
+                // if language is not supported by the services
+                // remove it from the list.
+                if (xHyph.is()  &&  !xHyph->hasLocale( rLocale ))
+                    aSvcMap.erase( nLanguage );
+            }
+        }   // if (xEntry.is())
+    }
+
+    if (xRes.is()  &&  xRes->getWord() != rWord)
+    {
+        xRes = new PossibleHyphens( rWord, nLanguage,
+                                    xRes->getPossibleHyphens(),
+                                    xRes->getHyphenationPositions() );
+    }
+
+    return xRes;
+}
+
+
+void HyphenatorDispatcher::SetServiceList( const Locale &rLocale,
+        const Sequence< OUString > &rSvcImplNames )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+
+    if (!rSvcImplNames.hasElements())
+        // remove entry
+        aSvcMap.erase( nLanguage );
+    else
+    {
+        // modify/add entry
+        LangSvcEntries_Hyph *pEntry = aSvcMap[ nLanguage ].get();
+        if (pEntry)
+        {
+            pEntry->Clear();
+            pEntry->aSvcImplNames = rSvcImplNames;
+            pEntry->aSvcImplNames.realloc(1);
+            pEntry->aSvcRefs  = Sequence< Reference < XHyphenator > > ( 1 );
+        }
+        else
+        {
+            auto pTmpEntry = std::make_shared<LangSvcEntries_Hyph>( rSvcImplNames[0] );
+            pTmpEntry->aSvcRefs = Sequence< Reference < XHyphenator > >( 1 );
+            aSvcMap[ nLanguage ] = pTmpEntry;
+        }
+    }
+}
+
+
+Sequence< OUString >
+    HyphenatorDispatcher::GetServiceList( const Locale &rLocale ) const
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Sequence< OUString > aRes;
+
+    // search for entry with that language and use data from that
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    const HyphSvcByLangMap_t::const_iterator  aIt( aSvcMap.find( nLanguage ) );
+    const LangSvcEntries_Hyph       *pEntry = aIt != aSvcMap.end() ? aIt->second.get() : nullptr;
+    if (pEntry)
+    {
+        aRes = pEntry->aSvcImplNames;
+        if (aRes.hasElements())
+            aRes.realloc(1);
+    }
+
+    return aRes;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/hyphdsp.hxx b/linguistic/source/hyphdsp.hxx
new file mode 100644
index 000000000..a119224ca
--- /dev/null
+++ b/linguistic/source/hyphdsp.hxx
@@ -0,0 +1,131 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_HYPHDSP_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_HYPHDSP_HXX
+
+
+#include <com/sun/star/linguistic2/XHyphenator.hpp>
+#include <com/sun/star/linguistic2/XPossibleHyphens.hpp>
+#include <com/sun/star/linguistic2/XSearchableDictionaryList.hpp>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <map>
+#include <memory>
+
+#include <linguistic/misc.hxx>
+#include "defs.hxx"
+
+class LngSvcMgr;
+
+
+class HyphenatorDispatcher :
+    public cppu::WeakImplHelper
+    <
+        css::linguistic2::XHyphenator
+    >,
+    public LinguDispatcher
+{
+    typedef std::shared_ptr< LangSvcEntries_Hyph >                LangSvcEntries_Hyph_Ptr_t;
+    typedef std::map< LanguageType, LangSvcEntries_Hyph_Ptr_t >     HyphSvcByLangMap_t;
+    HyphSvcByLangMap_t      aSvcMap;
+
+    css::uno::Reference< css::linguistic2::XLinguProperties >          xPropSet;
+    css::uno::Reference< css::linguistic2::XSearchableDictionaryList > xDicList;
+
+    LngSvcMgr      &rMgr;
+
+    HyphenatorDispatcher(const HyphenatorDispatcher &) = delete;
+    HyphenatorDispatcher & operator = (const HyphenatorDispatcher &) = delete;
+
+    inline const css::uno::Reference< css::linguistic2::XLinguProperties > &
+            GetPropSet();
+    inline const css::uno::Reference< css::linguistic2::XSearchableDictionaryList > &
+            GetDicList();
+
+    void    ClearSvcList();
+
+    static css::uno::Reference< css::linguistic2::XHyphenatedWord>
+            buildHyphWord( const OUString& rOrigWord,
+                const css::uno::Reference< css::linguistic2::XDictionaryEntry> &xEntry,
+                LanguageType nLang, sal_Int16 nMaxLeading );
+
+    static css::uno::Reference< css::linguistic2::XPossibleHyphens >
+            buildPossHyphens( const css::uno::Reference< css::linguistic2::XDictionaryEntry > &xEntry,
+                    LanguageType nLanguage );
+
+public:
+    explicit HyphenatorDispatcher( LngSvcMgr &rLngSvcMgr );
+    virtual ~HyphenatorDispatcher() override;
+
+    // XSupportedLocales
+    virtual css::uno::Sequence< css::lang::Locale > SAL_CALL
+        getLocales() override;
+    virtual sal_Bool SAL_CALL
+        hasLocale( const css::lang::Locale& aLocale ) override;
+
+    // XHyphenator
+    virtual css::uno::Reference< css::linguistic2::XHyphenatedWord > SAL_CALL
+        hyphenate( const OUString& aWord,
+                const css::lang::Locale& aLocale,
+                sal_Int16 nMaxLeading,
+                const css::uno::Sequence< ::css::beans::PropertyValue >& aProperties ) override;
+    virtual css::uno::Reference< css::linguistic2::XHyphenatedWord > SAL_CALL
+        queryAlternativeSpelling( const OUString& aWord,
+                const css::lang::Locale& aLocale,
+                sal_Int16 nIndex,
+                const css::uno::Sequence< ::css::beans::PropertyValue >& aProperties ) override;
+    virtual css::uno::Reference<
+            css::linguistic2::XPossibleHyphens > SAL_CALL
+        createPossibleHyphens(
+                const OUString& aWord,
+                const css::lang::Locale& aLocale,
+                const css::uno::Sequence< ::css::beans::PropertyValue >& aProperties ) override;
+
+    // LinguDispatcher
+    virtual void
+        SetServiceList( const css::lang::Locale &rLocale,
+                const css::uno::Sequence< OUString > &rSvcImplNames ) override;
+    virtual css::uno::Sequence< OUString >
+        GetServiceList( const css::lang::Locale &rLocale ) const override;
+};
+
+
+inline const css::uno::Reference< css::linguistic2::XLinguProperties > &
+        HyphenatorDispatcher::GetPropSet()
+{
+    if (!xPropSet.is())
+        xPropSet = ::linguistic::GetLinguProperties();
+    return xPropSet;
+}
+
+
+inline const css::uno::Reference< css::linguistic2::XSearchableDictionaryList > &
+        HyphenatorDispatcher::GetDicList()
+{
+    if (!xDicList.is())
+        xDicList = ::linguistic::GetDictionaryList();
+    return xDicList;
+}
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/hyphdta.cxx b/linguistic/source/hyphdta.cxx
new file mode 100644
index 000000000..d19d88340
--- /dev/null
+++ b/linguistic/source/hyphdta.cxx
@@ -0,0 +1,164 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <linguistic/hyphdta.hxx>
+#include <linguistic/misc.hxx>
+#include <osl/mutex.hxx>
+
+
+#include <tools/debug.hxx>
+#include <unotools/localedatawrapper.hxx>
+#include <utility>
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+
+
+namespace linguistic
+{
+
+
+HyphenatedWord::HyphenatedWord(const OUString &rWord, LanguageType nLang, sal_Int16 nHPos,
+                               const OUString &rHyphWord, sal_Int16 nPos ) :
+    aWord           (rWord),
+    aHyphenatedWord (rHyphWord),
+    nHyphPos        (nPos),
+    nHyphenationPos (nHPos),
+    nLanguage       (nLang)
+{
+    OUString aSingleQuote( GetLocaleDataWrapper( nLanguage ).getQuotationMarkEnd() );
+    DBG_ASSERT( 1 == aSingleQuote.getLength(), "unexpected length of quotation mark" );
+    if (!aSingleQuote.isEmpty())
+    {
+        // ignore typographical apostrophes (which got replaced in original
+        // word when being checked for hyphenation) in results.
+        OUString aTmpWord( rWord );
+        OUString aTmpHyphWord( rHyphWord );
+        aTmpWord        = aTmpWord    .replace( aSingleQuote[0], '\'' );
+        aTmpHyphWord    = aTmpHyphWord.replace( aSingleQuote[0], '\'' );
+        bIsAltSpelling  = aTmpWord != aTmpHyphWord;
+    }
+    else
+        bIsAltSpelling = rWord != rHyphWord;
+}
+
+
+HyphenatedWord::~HyphenatedWord()
+{
+}
+
+
+OUString SAL_CALL HyphenatedWord::getWord()
+{
+    return aWord;
+}
+
+
+Locale SAL_CALL HyphenatedWord::getLocale()
+{
+    return LanguageTag::convertToLocale( nLanguage );
+}
+
+
+sal_Int16 SAL_CALL HyphenatedWord::getHyphenationPos()
+{
+    return nHyphenationPos;
+}
+
+
+OUString SAL_CALL HyphenatedWord::getHyphenatedWord()
+{
+    return aHyphenatedWord;
+}
+
+
+sal_Int16 SAL_CALL HyphenatedWord::getHyphenPos()
+{
+    return nHyphPos;
+}
+
+
+sal_Bool SAL_CALL HyphenatedWord::isAlternativeSpelling()
+{
+    return bIsAltSpelling;
+}
+
+
+PossibleHyphens::PossibleHyphens(OUString aWord_, LanguageType nLang,
+            OUString aHyphWord,
+            const Sequence< sal_Int16 > &rPositions) :
+    aWord           (std::move(aWord_)),
+    aWordWithHyphens(std::move(aHyphWord)),
+    aOrigHyphenPos  (rPositions),
+    nLanguage       (nLang)
+{
+}
+
+
+PossibleHyphens::~PossibleHyphens()
+{
+}
+
+
+OUString SAL_CALL PossibleHyphens::getWord()
+{
+    return aWord;
+}
+
+
+Locale SAL_CALL PossibleHyphens::getLocale()
+{
+    return LanguageTag::convertToLocale( nLanguage );
+}
+
+
+OUString SAL_CALL PossibleHyphens::getPossibleHyphens()
+{
+    return aWordWithHyphens;
+}
+
+
+Sequence< sal_Int16 > SAL_CALL PossibleHyphens::getHyphenationPositions()
+{
+    return aOrigHyphenPos;
+}
+
+css::uno::Reference <css::linguistic2::XHyphenatedWord> HyphenatedWord::CreateHyphenatedWord(
+        const OUString &rWord, LanguageType nLang, sal_Int16 nHyphenationPos,
+        const OUString &rHyphenatedWord, sal_Int16 nHyphenPos )
+{
+    return new HyphenatedWord( rWord, nLang, nHyphenationPos, rHyphenatedWord, nHyphenPos );
+}
+
+css::uno::Reference < css::linguistic2::XPossibleHyphens > PossibleHyphens::CreatePossibleHyphens
+        (const OUString &rWord, LanguageType nLang,
+         const OUString &rHyphWord,
+         const css::uno::Sequence< sal_Int16 > &rPositions)
+{
+    return new PossibleHyphens( rWord, nLang, rHyphWord, rPositions );
+}
+
+
+}   // namespace linguistic
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/iprcache.cxx b/linguistic/source/iprcache.cxx
new file mode 100644
index 000000000..2b82e5684
--- /dev/null
+++ b/linguistic/source/iprcache.cxx
@@ -0,0 +1,227 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <iprcache.hxx>
+#include <linguistic/misc.hxx>
+
+#include <com/sun/star/linguistic2/DictionaryListEventFlags.hpp>
+#include <osl/mutex.hxx>
+#include <unotools/linguprops.hxx>
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+
+
+namespace linguistic
+{
+
+
+#define NUM_FLUSH_PROPS     6
+
+const struct
+{
+    OUString        aPropName;
+    sal_Int32       nPropHdl;
+} aFlushProperties[ NUM_FLUSH_PROPS ] =
+{
+    { UPN_IS_USE_DICTIONARY_LIST,         UPH_IS_USE_DICTIONARY_LIST },
+    { UPN_IS_IGNORE_CONTROL_CHARACTERS,   UPH_IS_IGNORE_CONTROL_CHARACTERS },
+    { UPN_IS_SPELL_UPPER_CASE,            UPH_IS_SPELL_UPPER_CASE },
+    { UPN_IS_SPELL_WITH_DIGITS,           UPH_IS_SPELL_WITH_DIGITS },
+    { UPN_IS_SPELL_CAPITALIZATION,        UPH_IS_SPELL_CAPITALIZATION }
+};
+
+
+static void lcl_AddAsPropertyChangeListener(
+        const Reference< XPropertyChangeListener >& xListener,
+        Reference< XLinguProperties > const &rPropSet )
+{
+    if (xListener.is() && rPropSet.is())
+    {
+        for (auto& aFlushProperty : aFlushProperties)
+        {
+            rPropSet->addPropertyChangeListener(
+                aFlushProperty.aPropName, xListener );
+        }
+    }
+}
+
+
+static void lcl_RemoveAsPropertyChangeListener(
+        const Reference< XPropertyChangeListener >& xListener,
+        Reference< XLinguProperties > const &rPropSet )
+{
+    if (xListener.is() && rPropSet.is())
+    {
+        for (auto& aFlushProperty : aFlushProperties)
+        {
+            rPropSet->removePropertyChangeListener(
+                    aFlushProperty.aPropName, xListener );
+        }
+    }
+}
+
+
+static bool lcl_IsFlushProperty( sal_Int32 nHandle )
+{
+    int i;
+    for (i = 0;  i < NUM_FLUSH_PROPS;  ++i)
+    {
+        if (nHandle == aFlushProperties[i].nPropHdl)
+            break;
+    }
+    return i < NUM_FLUSH_PROPS;
+}
+
+
+void FlushListener::SetDicList( Reference<XSearchableDictionaryList> const &rDL )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (xDicList != rDL)
+    {
+        if (xDicList.is())
+            xDicList->removeDictionaryListEventListener( this );
+
+        xDicList = rDL;
+        if (xDicList.is())
+            xDicList->addDictionaryListEventListener( this, false );
+    }
+}
+
+
+void FlushListener::SetPropSet( Reference< XLinguProperties > const &rPS )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (xPropSet != rPS)
+    {
+        if (xPropSet.is())
+            lcl_RemoveAsPropertyChangeListener( this, xPropSet );
+
+        xPropSet = rPS;
+        if (xPropSet.is())
+            lcl_AddAsPropertyChangeListener( this, xPropSet );
+    }
+}
+
+
+void SAL_CALL FlushListener::disposing( const EventObject& rSource )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (xDicList.is()  &&  rSource.Source == xDicList)
+    {
+        xDicList->removeDictionaryListEventListener( this );
+        xDicList = nullptr;    //! release reference
+    }
+    if (xPropSet.is()  &&  rSource.Source == xPropSet)
+    {
+        lcl_RemoveAsPropertyChangeListener( this, xPropSet );
+        xPropSet = nullptr;    //! release reference
+    }
+}
+
+
+void SAL_CALL FlushListener::processDictionaryListEvent(
+            const DictionaryListEvent& rDicListEvent )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (rDicListEvent.Source != xDicList)
+        return;
+
+    sal_Int16 nEvt = rDicListEvent.nCondensedEvent;
+    sal_Int16 const nFlushFlags =
+            DictionaryListEventFlags::ADD_NEG_ENTRY     |
+            DictionaryListEventFlags::DEL_POS_ENTRY     |
+            DictionaryListEventFlags::ACTIVATE_NEG_DIC  |
+            DictionaryListEventFlags::DEACTIVATE_POS_DIC;
+    bool bFlush = 0 != (nEvt & nFlushFlags);
+
+    if (bFlush)
+        mrSpellCache.Flush();
+}
+
+
+void SAL_CALL FlushListener::propertyChange(
+            const PropertyChangeEvent& rEvt )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (rEvt.Source == xPropSet)
+    {
+        bool bFlush = lcl_IsFlushProperty( rEvt.PropertyHandle );
+
+        if (bFlush)
+            mrSpellCache.Flush();
+    }
+}
+
+
+SpellCache::SpellCache()
+{
+    mxFlushLstnr = new FlushListener( *this );
+    Reference<XSearchableDictionaryList> aDictionaryList(GetDictionaryList());
+    mxFlushLstnr->SetDicList( aDictionaryList ); //! after reference is established
+    Reference<XLinguProperties> aPropertySet(GetLinguProperties());
+    mxFlushLstnr->SetPropSet( aPropertySet );    //! after reference is established
+}
+
+SpellCache::~SpellCache()
+{
+    Reference<XSearchableDictionaryList>  aEmptyList;
+    Reference<XLinguProperties>     aEmptySet;
+    mxFlushLstnr->SetDicList( aEmptyList );
+    mxFlushLstnr->SetPropSet( aEmptySet );
+}
+
+void SpellCache::Flush()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    // clear word list
+    LangWordList_t().swap(aWordLists);
+}
+
+bool SpellCache::CheckWord( const OUString& rWord, LanguageType nLang )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    WordList_t &rList = aWordLists[ nLang ];
+    const WordList_t::const_iterator aIt = rList.find( rWord );
+    return aIt != rList.end();
+}
+
+void SpellCache::AddWord( const OUString& rWord, LanguageType nLang )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    WordList_t & rList = aWordLists[ nLang ];
+    // occasional clean-up...
+    if (rList.size() > 500)
+        rList.clear();
+    rList.insert( rWord );
+}
+
+}   // namespace linguistic
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/lng.component b/linguistic/source/lng.component
new file mode 100644
index 000000000..82622e2f0
--- /dev/null
+++ b/linguistic/source/lng.component
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ -->
+
+<component loader="com.sun.star.loader.SharedLibrary" environment="@CPPU_ENV@"
+    xmlns="http://openoffice.org/2010/uno-components">
+  <implementation name="com.sun.star.lingu2.ConvDicList"
+    constructor="linguistic_ConvDicList_get_implementation">
+    <service name="com.sun.star.linguistic2.ConversionDictionaryList"/>
+  </implementation>
+  <implementation name="com.sun.star.lingu2.DicList"
+    constructor="linguistic_DicList_get_implementation" single-instance="true">
+    <service name="com.sun.star.linguistic2.DictionaryList"/>
+  </implementation>
+  <implementation name="com.sun.star.lingu2.LinguProps"
+    constructor="linguistic_LinguProps_get_implementation" single-instance="true">
+    <service name="com.sun.star.linguistic2.LinguProperties"/>
+  </implementation>
+  <implementation name="com.sun.star.lingu2.LngSvcMgr"
+    constructor="linguistic_LngSvcMgr_get_implementation" single-instance="true">
+    <service name="com.sun.star.linguistic2.LinguServiceManager"/>
+  </implementation>
+  <implementation name="com.sun.star.lingu2.ProofreadingIterator"
+    constructor="linguistic_GrammarCheckingIterator_get_implementation" single-instance="true">
+    <service name="com.sun.star.linguistic2.ProofreadingIterator"/>
+  </implementation>
+</component>
diff --git a/linguistic/source/lngopt.cxx b/linguistic/source/lngopt.cxx
new file mode 100644
index 000000000..1a48789ae
--- /dev/null
+++ b/linguistic/source/lngopt.cxx
@@ -0,0 +1,424 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <sal/macros.h>
+#include "lngopt.hxx"
+#include <linguistic/misc.hxx>
+#include <o3tl/safeint.hxx>
+#include <tools/debug.hxx>
+#include <unotools/lingucfg.hxx>
+
+#include <comphelper/sequence.hxx>
+#include <cppuhelper/factory.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <cppuhelper/weak.hxx>
+#include <com/sun/star/lang/Locale.hpp>
+
+using namespace utl;
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+using namespace com::sun::star::registry;
+
+
+// static member initialization
+SvtLinguOptions *   LinguOptions::pData = nullptr;
+oslInterlockedCount LinguOptions::nRefCount;
+
+
+LinguOptions::LinguOptions()
+{
+    if (!pData)
+    {
+        pData = new SvtLinguOptions;
+        SvtLinguConfig aLinguCfg;
+        aLinguCfg.GetOptions( *pData );
+    }
+
+    osl_atomic_increment( &nRefCount );
+}
+
+
+LinguOptions::LinguOptions(const LinguOptions & /*rOpt*/)
+{
+    DBG_ASSERT( pData, "lng : data missing" );
+    osl_atomic_increment( &nRefCount );
+}
+
+
+LinguOptions::~LinguOptions()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if ( osl_atomic_decrement( &nRefCount ) == 0 )
+    {
+        delete pData;   pData  = nullptr;
+    }
+}
+
+namespace {
+
+struct WID_Name
+{
+    sal_Int32        nWID;
+    OUString         aPropertyName;
+};
+
+}
+
+//! order of entries is import (see LinguOptions::GetName)
+//! since the WID is used as index in this table!
+WID_Name const aWID_Name[] =
+{
+    { 0,                                  "" },
+    { UPH_IS_USE_DICTIONARY_LIST,         UPN_IS_USE_DICTIONARY_LIST },
+    { UPH_IS_IGNORE_CONTROL_CHARACTERS,   UPN_IS_IGNORE_CONTROL_CHARACTERS },
+    { UPH_IS_SPELL_UPPER_CASE,            UPN_IS_SPELL_UPPER_CASE },
+    { UPH_IS_SPELL_WITH_DIGITS,           UPN_IS_SPELL_WITH_DIGITS },
+    { UPH_IS_SPELL_CAPITALIZATION,        UPN_IS_SPELL_CAPITALIZATION },
+    { UPH_HYPH_MIN_LEADING,               UPN_HYPH_MIN_LEADING },
+    { UPH_HYPH_MIN_TRAILING,              UPN_HYPH_MIN_TRAILING },
+    { UPH_HYPH_MIN_WORD_LENGTH,           UPN_HYPH_MIN_WORD_LENGTH },
+    { UPH_DEFAULT_LOCALE,                 UPN_DEFAULT_LOCALE },
+    { UPH_IS_SPELL_AUTO,                  UPN_IS_SPELL_AUTO },
+    { 0,                                  "" },
+    { 0,                                  "" },
+    { UPH_IS_SPELL_SPECIAL,               UPN_IS_SPELL_SPECIAL },
+    { UPH_IS_HYPH_AUTO,                   UPN_IS_HYPH_AUTO },
+    { UPH_IS_HYPH_SPECIAL,                UPN_IS_HYPH_SPECIAL },
+    { UPH_IS_WRAP_REVERSE,                UPN_IS_WRAP_REVERSE },
+    { 0,                                  "" },
+    { 0,                                  "" },
+    { 0,                                  "" },
+    { 0,                                  "" },
+    { UPH_DEFAULT_LANGUAGE,               UPN_DEFAULT_LANGUAGE },
+    { UPH_DEFAULT_LOCALE_CJK,             UPN_DEFAULT_LOCALE_CJK },
+    { UPH_DEFAULT_LOCALE_CTL,             UPN_DEFAULT_LOCALE_CTL }
+};
+
+
+OUString LinguOptions::GetName( sal_Int32 nWID )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    OUString aRes;
+
+    if (0 <= nWID && o3tl::make_unsigned(nWID) < SAL_N_ELEMENTS(aWID_Name)
+        && aWID_Name[ nWID ].nWID == nWID)
+        aRes = aWID_Name[nWID].aPropertyName;
+    else
+        OSL_FAIL("lng : unknown WID");
+
+    return aRes;
+}
+
+
+//! map must be sorted by first entry in alphabetical increasing order.
+static const SfxItemPropertyMapEntry* lcl_GetLinguProps()
+{
+    static const SfxItemPropertyMapEntry aLinguProps[] =
+    {
+        { UPN_DEFAULT_LANGUAGE,           UPH_DEFAULT_LANGUAGE,
+                ::cppu::UnoType<sal_Int16>::get(),    0, 0 },
+        { UPN_DEFAULT_LOCALE,             UPH_DEFAULT_LOCALE,
+                ::cppu::UnoType<Locale>::get(),       0, 0 },
+        { UPN_DEFAULT_LOCALE_CJK,         UPH_DEFAULT_LOCALE_CJK,
+                ::cppu::UnoType<Locale>::get(),       0, 0 },
+        { UPN_DEFAULT_LOCALE_CTL,         UPH_DEFAULT_LOCALE_CTL,
+                ::cppu::UnoType<Locale>::get(),       0, 0 },
+        { UPN_HYPH_MIN_LEADING,           UPH_HYPH_MIN_LEADING,
+                ::cppu::UnoType<sal_Int16>::get(),    0, 0 },
+        { UPN_HYPH_MIN_TRAILING,          UPH_HYPH_MIN_TRAILING,
+                ::cppu::UnoType<sal_Int16>::get(),    0, 0 },
+        { UPN_HYPH_MIN_WORD_LENGTH,       UPH_HYPH_MIN_WORD_LENGTH,
+                ::cppu::UnoType<sal_Int16>::get(),    0, 0 },
+        { UPN_IS_GERMAN_PRE_REFORM,       UPH_IS_GERMAN_PRE_REFORM,       /*! deprecated !*/
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_HYPH_AUTO,               UPH_IS_HYPH_AUTO,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_HYPH_SPECIAL,            UPH_IS_HYPH_SPECIAL,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_IGNORE_CONTROL_CHARACTERS,   UPH_IS_IGNORE_CONTROL_CHARACTERS,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_SPELL_AUTO,              UPH_IS_SPELL_AUTO,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_SPELL_CAPITALIZATION,    UPH_IS_SPELL_CAPITALIZATION,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_SPELL_HIDE,              UPH_IS_SPELL_HIDE,              /*! deprecated !*/
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_SPELL_IN_ALL_LANGUAGES,  UPH_IS_SPELL_IN_ALL_LANGUAGES,  /*! deprecated !*/
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_SPELL_SPECIAL,           UPH_IS_SPELL_SPECIAL,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_SPELL_UPPER_CASE,        UPH_IS_SPELL_UPPER_CASE,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_SPELL_WITH_DIGITS,       UPH_IS_SPELL_WITH_DIGITS,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_USE_DICTIONARY_LIST,     UPH_IS_USE_DICTIONARY_LIST,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { UPN_IS_WRAP_REVERSE,            UPH_IS_WRAP_REVERSE,
+                cppu::UnoType<bool>::get(),            0, 0 },
+        { u"", 0, css::uno::Type(), 0, 0 }
+    };
+    return aLinguProps;
+}
+LinguProps::LinguProps() :
+    aEvtListeners   (GetLinguMutex()),
+    aPropListeners  (GetLinguMutex()),
+    aPropertyMap(lcl_GetLinguProps())
+{
+    bDisposing = false;
+}
+
+void LinguProps::launchEvent( const PropertyChangeEvent &rEvt ) const
+{
+    comphelper::OInterfaceContainerHelper3<XPropertyChangeListener> *pContainer =
+            aPropListeners.getContainer( rEvt.PropertyHandle );
+    if (pContainer)
+        pContainer->notifyEach( &XPropertyChangeListener::propertyChange, rEvt );
+}
+
+Reference< XPropertySetInfo > SAL_CALL LinguProps::getPropertySetInfo()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    static Reference< XPropertySetInfo > aRef =
+            new SfxItemPropertySetInfo( aPropertyMap );
+    return aRef;
+}
+
+void SAL_CALL LinguProps::setPropertyValue(
+            const OUString& rPropertyName, const Any& rValue )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    const SfxItemPropertyMapEntry* pCur = aPropertyMap.getByName( rPropertyName );
+    if (pCur)
+    {
+        Any aOld( aConfig.GetProperty( pCur->nWID ) );
+        if (aOld != rValue && aConfig.SetProperty( pCur->nWID, rValue ))
+        {
+            PropertyChangeEvent aChgEvt( static_cast<XPropertySet *>(this), rPropertyName,
+                    false, pCur->nWID, aOld, rValue );
+            launchEvent( aChgEvt );
+        }
+    }
+}
+
+Any SAL_CALL LinguProps::getPropertyValue( const OUString& rPropertyName )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Any aRet;
+
+    const SfxItemPropertyMapEntry* pCur = aPropertyMap.getByName( rPropertyName );
+    if(pCur)
+    {
+        aRet = aConfig.GetProperty( pCur->nWID );
+    }
+
+    return aRet;
+}
+
+void SAL_CALL LinguProps::addPropertyChangeListener(
+            const OUString& rPropertyName,
+            const Reference< XPropertyChangeListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bDisposing && rxListener.is())
+    {
+        const SfxItemPropertyMapEntry* pCur = aPropertyMap.getByName( rPropertyName );
+        if(pCur)
+            aPropListeners.addInterface( pCur->nWID, rxListener );
+    }
+}
+
+void SAL_CALL LinguProps::removePropertyChangeListener(
+            const OUString& rPropertyName,
+            const Reference< XPropertyChangeListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bDisposing && rxListener.is())
+    {
+        const SfxItemPropertyMapEntry* pCur = aPropertyMap.getByName( rPropertyName );
+        if(pCur)
+            aPropListeners.removeInterface( pCur->nWID, rxListener );
+    }
+}
+
+void SAL_CALL LinguProps::addVetoableChangeListener(
+            const OUString& /*rPropertyName*/,
+            const Reference< XVetoableChangeListener >& /*xListener*/ )
+{
+}
+
+void SAL_CALL LinguProps::removeVetoableChangeListener(
+            const OUString& /*rPropertyName*/,
+            const Reference< XVetoableChangeListener >& /*xListener*/ )
+{
+}
+
+
+void SAL_CALL LinguProps::setFastPropertyValue( sal_Int32 nHandle, const Any& rValue )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Any aOld( aConfig.GetProperty( nHandle ) );
+    if (aOld != rValue && aConfig.SetProperty( nHandle, rValue ))
+    {
+        PropertyChangeEvent aChgEvt( static_cast<XPropertySet *>(this),
+                LinguOptions::GetName( nHandle ), false, nHandle, aOld, rValue );
+        launchEvent( aChgEvt );
+    }
+}
+
+
+Any SAL_CALL LinguProps::getFastPropertyValue( sal_Int32 nHandle )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Any aRes( aConfig.GetProperty( nHandle ) );
+    return aRes;
+}
+
+
+Sequence< PropertyValue > SAL_CALL
+    LinguProps::getPropertyValues()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    std::vector<PropertyValue> aProps;
+    aProps.reserve(aPropertyMap.getPropertyEntries().size());
+    for(auto pEntry : aPropertyMap.getPropertyEntries())
+        aProps.push_back(PropertyValue(pEntry->aName, pEntry->nWID,
+                                 aConfig.GetProperty(pEntry->nWID),
+                                 css::beans::PropertyState_DIRECT_VALUE));
+    return comphelper::containerToSequence(aProps);
+}
+
+void SAL_CALL
+    LinguProps::setPropertyValues( const Sequence< PropertyValue >& rProps )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    for (const PropertyValue &rVal : rProps)
+    {
+        setPropertyValue( rVal.Name, rVal.Value );
+    }
+}
+
+void SAL_CALL
+    LinguProps::dispose()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bDisposing)
+    {
+        bDisposing = true;
+
+        //! it's too late to save the options here!
+        // (see AppExitListener for saving)
+        //aOpt.Save();  // save (possible) changes before exiting
+
+        EventObject aEvtObj( static_cast<XPropertySet *>(this) );
+        aEvtListeners.disposeAndClear( aEvtObj );
+        aPropListeners.disposeAndClear( aEvtObj );
+    }
+}
+
+void SAL_CALL
+    LinguProps::addEventListener( const Reference< XEventListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bDisposing && rxListener.is())
+        aEvtListeners.addInterface( rxListener );
+}
+
+void SAL_CALL
+    LinguProps::removeEventListener( const Reference< XEventListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bDisposing && rxListener.is())
+        aEvtListeners.removeInterface( rxListener );
+}
+
+
+// Service specific part
+
+// XServiceInfo
+OUString SAL_CALL LinguProps::getImplementationName()
+{
+    return "com.sun.star.lingu2.LinguProps";
+}
+
+// XServiceInfo
+sal_Bool SAL_CALL LinguProps::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+// XServiceInfo
+uno::Sequence< OUString > SAL_CALL LinguProps::getSupportedServiceNames()
+{
+    return { "com.sun.star.linguistic2.LinguProperties" };
+}
+
+bool LinguProps::getPropertyBool(const OUString& aPropertyName)
+{
+   uno::Any any = getPropertyValue(aPropertyName);
+   bool b = false;
+   any >>= b;
+   return b;
+}
+
+sal_Int16 LinguProps::getPropertyInt16(const OUString& aPropertyName)
+{
+   uno::Any any = getPropertyValue(aPropertyName);
+   sal_Int16 b = 0;
+   any >>= b;
+   return b;
+}
+
+Locale LinguProps::getPropertyLocale(const OUString& aPropertyName)
+{
+   uno::Any any = getPropertyValue(aPropertyName);
+   css::lang::Locale b;
+   any >>= b;
+   return b;
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+linguistic_LinguProps_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new LinguProps());
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/lngopt.hxx b/linguistic/source/lngopt.hxx
new file mode 100644
index 000000000..896e345ed
--- /dev/null
+++ b/linguistic/source/lngopt.hxx
@@ -0,0 +1,202 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_LNGOPT_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_LNGOPT_HXX
+
+#include <cppuhelper/implbase.hxx>
+#include <comphelper/interfacecontainer3.hxx>
+#include <comphelper/multiinterfacecontainer3.hxx>
+#include <com/sun/star/beans/XFastPropertySet.hpp>
+#include <com/sun/star/beans/XPropertyAccess.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/linguistic2/XLinguProperties.hpp>
+#include <unotools/lingucfg.hxx>
+#include <svl/itemprop.hxx>
+#include <unotools/linguprops.hxx>
+#include <com/sun/star/uno/Any.h>
+
+namespace com::sun::star {
+    namespace beans {
+        struct PropertyChangeEvent;
+    }
+}
+
+
+// LinguOptions
+// This class represents all Linguistik relevant options.
+
+class LinguOptions
+{
+    static SvtLinguOptions     *pData;
+    static oslInterlockedCount  nRefCount;  // number of objects of this class
+
+public:
+    LinguOptions();
+    LinguOptions(const LinguOptions &rOpt);
+    ~LinguOptions();
+
+    static OUString    GetName( sal_Int32 nWID );
+
+    const css::uno::Sequence< OUString >&
+            GetActiveDics() const   { return pData->aActiveDics; }
+};
+
+typedef comphelper::OMultiTypeInterfaceContainerHelperVar3<css::beans::XPropertyChangeListener, sal_Int32>
+    OPropertyListenerContainerHelper;
+
+class LinguProps :
+    public cppu::WeakImplHelper
+    <
+        css::linguistic2::XLinguProperties,
+        css::beans::XFastPropertySet,
+        css::beans::XPropertyAccess,
+        css::lang::XComponent,
+        css::lang::XServiceInfo
+    >
+{
+    ::comphelper::OInterfaceContainerHelper3<css::lang::XEventListener> aEvtListeners;
+    OPropertyListenerContainerHelper            aPropListeners;
+
+    SfxItemPropertyMap                          aPropertyMap;
+    SvtLinguConfig                              aConfig;
+
+    bool                                        bDisposing;
+
+    LinguProps(const LinguProps &) = delete;
+    LinguProps & operator = (const LinguProps &) = delete;
+
+    void    launchEvent( const css::beans::PropertyChangeEvent &rEvt ) const;
+
+    /// @throws css::uno::RuntimeException
+    bool getPropertyBool(const OUString& aPropertyName);
+    /// @throws css::uno::RuntimeException
+    sal_Int16 getPropertyInt16(const OUString& aPropertyName);
+    /// @throws css::uno::RuntimeException
+    css::lang::Locale getPropertyLocale(const OUString& aPropertyName);
+    /// @throws css::uno::RuntimeException
+    void setProperty(const OUString& aPropertyName, bool p1)
+        { setPropertyValue( aPropertyName, css::uno::Any(p1) ); }
+    /// @throws css::uno::RuntimeException
+    void setProperty(const OUString& aPropertyName, sal_Int16 p1)
+        { setPropertyValue( aPropertyName, css::uno::Any(p1) ); }
+    /// @throws css::uno::RuntimeException
+    void setProperty(const OUString& aPropertyName, css::lang::Locale p1)
+        { setPropertyValue( aPropertyName, css::uno::Any(p1) ); }
+
+public:
+    LinguProps();
+
+    virtual sal_Bool SAL_CALL getIsUseDictionaryList() override
+        { return getPropertyBool(UPN_IS_USE_DICTIONARY_LIST); }
+    virtual void SAL_CALL setIsUseDictionaryList(sal_Bool p1) override
+        { setProperty(UPN_IS_USE_DICTIONARY_LIST, static_cast<bool>(p1)); }
+    virtual sal_Bool SAL_CALL getIsIgnoreControlCharacters() override
+        { return getPropertyBool(UPN_IS_IGNORE_CONTROL_CHARACTERS); }
+    virtual void SAL_CALL setIsIgnoreControlCharacters(sal_Bool p1) override
+        { setProperty(UPN_IS_IGNORE_CONTROL_CHARACTERS, static_cast<bool>(p1)); }
+    virtual sal_Bool SAL_CALL getIsSpellUpperCase() override
+        { return getPropertyBool(UPN_IS_SPELL_UPPER_CASE); }
+    virtual void SAL_CALL setIsSpellUpperCase(sal_Bool p1) override
+        { setProperty(UPN_IS_SPELL_UPPER_CASE, static_cast<bool>(p1)); }
+    virtual sal_Bool SAL_CALL getIsSpellWithDigits() override
+        { return getPropertyBool(UPN_IS_SPELL_WITH_DIGITS); }
+    virtual void SAL_CALL setIsSpellWithDigits(sal_Bool p1) override
+        { setProperty(UPN_IS_SPELL_WITH_DIGITS, static_cast<bool>(p1)); }
+    virtual sal_Bool SAL_CALL getIsSpellCapitalization() override
+        { return getPropertyBool(UPN_IS_SPELL_CAPITALIZATION); }
+    virtual void SAL_CALL setIsSpellCapitalization(sal_Bool p1) override
+        { setProperty(UPN_IS_SPELL_CAPITALIZATION, static_cast<bool>(p1)); }
+    virtual sal_Int16 SAL_CALL getHyphMinLeading() override
+        { return getPropertyInt16(UPN_HYPH_MIN_LEADING); }
+    virtual void SAL_CALL setHyphMinLeading(sal_Int16 p1) override
+        { setProperty(UPN_HYPH_MIN_LEADING, p1); }
+    virtual sal_Int16 SAL_CALL getHyphMinTrailing() override
+        { return getPropertyInt16(UPN_HYPH_MIN_TRAILING); }
+    virtual void SAL_CALL setHyphMinTrailing(sal_Int16 p1) override
+        { setProperty(UPN_HYPH_MIN_TRAILING, p1); }
+    virtual sal_Int16 SAL_CALL getHyphMinWordLength() override
+        { return getPropertyInt16(UPN_HYPH_MIN_WORD_LENGTH); }
+    virtual void SAL_CALL setHyphMinWordLength(sal_Int16 p1) override
+        { setProperty(UPN_HYPH_MIN_WORD_LENGTH, p1); }
+    virtual css::lang::Locale SAL_CALL getDefaultLocale() override
+        { return getPropertyLocale(UPN_DEFAULT_LOCALE); }
+    virtual void SAL_CALL setDefaultLocale(const css::lang::Locale& p1) override
+        { setProperty(UPN_DEFAULT_LOCALE, p1); }
+    virtual sal_Bool SAL_CALL getIsHyphAuto() override
+        { return getPropertyBool(UPN_IS_HYPH_AUTO); }
+    virtual void SAL_CALL setIsHyphAuto(sal_Bool p1) override
+        { setProperty(UPN_IS_HYPH_AUTO, static_cast<bool>(p1)); }
+    virtual sal_Bool SAL_CALL getIsHyphSpecial() override
+        { return getPropertyBool(UPN_IS_HYPH_SPECIAL); }
+    virtual void SAL_CALL setIsHyphSpecial(sal_Bool p1) override
+        { setProperty(UPN_IS_HYPH_SPECIAL, static_cast<bool>(p1)); }
+    virtual sal_Bool SAL_CALL getIsSpellAuto() override
+        { return getPropertyBool(UPN_IS_SPELL_AUTO); }
+    virtual void SAL_CALL setIsSpellAuto(sal_Bool p1) override
+        { setProperty(UPN_IS_SPELL_AUTO, static_cast<bool>(p1)); }
+    virtual sal_Bool SAL_CALL getIsSpellSpecial() override
+        { return getPropertyBool(UPN_IS_SPELL_SPECIAL); }
+    virtual void SAL_CALL setIsSpellSpecial(sal_Bool p1) override
+        { setProperty(UPN_IS_SPELL_SPECIAL, static_cast<bool>(p1)); }
+    virtual sal_Bool SAL_CALL getIsWrapReverse() override
+        { return getPropertyBool(UPN_IS_WRAP_REVERSE); }
+    virtual void SAL_CALL setIsWrapReverse(sal_Bool p1) override
+        { setProperty(UPN_IS_WRAP_REVERSE, static_cast<bool>(p1)); }
+    virtual css::lang::Locale SAL_CALL getDefaultLocale_CJK() override
+        { return getPropertyLocale(UPN_DEFAULT_LOCALE_CJK); }
+    virtual void SAL_CALL setDefaultLocale_CJK(const css::lang::Locale& p1) override
+        { setProperty(UPN_DEFAULT_LOCALE_CJK, p1); }
+    virtual css::lang::Locale SAL_CALL getDefaultLocale_CTL() override
+        { return getPropertyLocale(UPN_DEFAULT_LOCALE_CTL); }
+    virtual void SAL_CALL setDefaultLocale_CTL(const css::lang::Locale& p1) override
+        { setProperty(UPN_DEFAULT_LOCALE_CTL, p1); }
+
+    // XPropertySet
+    virtual css::uno::Reference< css::beans::XPropertySetInfo > SAL_CALL getPropertySetInfo() override;
+    virtual void SAL_CALL setPropertyValue( const OUString& aPropertyName, const css::uno::Any& aValue ) override;
+    virtual css::uno::Any SAL_CALL getPropertyValue( const OUString& PropertyName ) override;
+    virtual void SAL_CALL addPropertyChangeListener( const OUString& aPropertyName, const css::uno::Reference< css::beans::XPropertyChangeListener >& rxListener ) override;
+    virtual void SAL_CALL removePropertyChangeListener( const OUString& aPropertyName, const css::uno::Reference< css::beans::XPropertyChangeListener >& rxListener ) override;
+    virtual void SAL_CALL addVetoableChangeListener( const OUString& PropertyName, const css::uno::Reference< css::beans::XVetoableChangeListener >& rxListener ) override;
+    virtual void SAL_CALL removeVetoableChangeListener( const OUString& PropertyName, const css::uno::Reference< css::beans::XVetoableChangeListener >& rxListener ) override;
+
+    // XFastPropertySet
+    virtual void SAL_CALL setFastPropertyValue( sal_Int32 nHandle, const css::uno::Any& aValue ) override;
+    virtual css::uno::Any SAL_CALL getFastPropertyValue( sal_Int32 nHandle ) override;
+
+    // XPropertyAccess
+    virtual css::uno::Sequence< css::beans::PropertyValue > SAL_CALL getPropertyValues() override;
+    virtual void SAL_CALL setPropertyValues( const css::uno::Sequence< css::beans::PropertyValue >& aProps ) override;
+
+    // XComponent
+    virtual void SAL_CALL dispose() override;
+    virtual void SAL_CALL addEventListener( const css::uno::Reference< css::lang::XEventListener >& rxListener ) override;
+    virtual void SAL_CALL removeEventListener( const css::uno::Reference< css::lang::XEventListener >& rxListener ) override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/lngprophelp.cxx b/linguistic/source/lngprophelp.cxx
new file mode 100644
index 000000000..a14c96c95
--- /dev/null
+++ b/linguistic/source/lngprophelp.cxx
@@ -0,0 +1,750 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <tools/debug.hxx>
+#include <sal/log.hxx>
+
+#include <com/sun/star/linguistic2/LinguServiceEvent.hpp>
+#include <com/sun/star/linguistic2/LinguServiceEventFlags.hpp>
+#include <com/sun/star/linguistic2/XLinguServiceEventListener.hpp>
+#include <com/sun/star/linguistic2/XLinguProperties.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <osl/mutex.hxx>
+#include <unotools/linguprops.hxx>
+
+#include <linguistic/misc.hxx>
+#include <linguistic/lngprops.hxx>
+
+#include <linguistic/lngprophelp.hxx>
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+namespace linguistic
+{
+
+
+PropertyChgHelper::PropertyChgHelper(
+        const Reference< XInterface > &rxSource,
+        Reference< XLinguProperties > const &rxPropSet,
+        int nAllowedEvents ) :
+    aPropNames          ({UPN_IS_IGNORE_CONTROL_CHARACTERS, UPN_IS_USE_DICTIONARY_LIST}),
+    xMyEvtObj           (rxSource),
+    aLngSvcEvtListeners (GetLinguMutex()),
+    xPropSet            (rxPropSet),
+    nEvtFlags           (nAllowedEvents)
+{
+    SetDefaultValues();
+}
+
+PropertyChgHelper::~PropertyChgHelper()
+{
+}
+
+void PropertyChgHelper::SetDefaultValues()
+{
+    bResIsIgnoreControlCharacters   = bIsIgnoreControlCharacters    = true;
+    bResIsUseDictionaryList         = bIsUseDictionaryList          = true;
+}
+
+
+void PropertyChgHelper::GetCurrentValues()
+{
+    const auto& rPropNames = GetPropNames();
+    if (!GetPropSet().is() || rPropNames.empty())
+        return;
+
+    for (const OUString& rPropName : rPropNames)
+    {
+        bool *pbVal     = nullptr,
+             *pbResVal  = nullptr;
+
+        if ( rPropName == UPN_IS_IGNORE_CONTROL_CHARACTERS )
+        {
+            pbVal    = &bIsIgnoreControlCharacters;
+            pbResVal = &bResIsIgnoreControlCharacters;
+        }
+        else if ( rPropName == UPN_IS_USE_DICTIONARY_LIST )
+        {
+            pbVal    = &bIsUseDictionaryList;
+            pbResVal = &bResIsUseDictionaryList;
+        }
+
+        if (pbVal && pbResVal)
+        {
+            GetPropSet()->getPropertyValue( rPropName ) >>= *pbVal;
+            *pbResVal = *pbVal;
+        }
+    }
+}
+
+
+void PropertyChgHelper::SetTmpPropVals( const PropertyValues &rPropVals )
+{
+    // return value is default value unless there is an explicitly supplied
+    // temporary value
+    bResIsIgnoreControlCharacters   = bIsIgnoreControlCharacters;
+    bResIsUseDictionaryList         = bIsUseDictionaryList;
+
+    for (const PropertyValue& rVal : rPropVals)
+    {
+        bool  *pbResVal = nullptr;
+        switch (rVal.Handle)
+        {
+            case UPH_IS_IGNORE_CONTROL_CHARACTERS :
+                    pbResVal = &bResIsIgnoreControlCharacters; break;
+            case UPH_IS_USE_DICTIONARY_LIST     :
+                    pbResVal = &bResIsUseDictionaryList; break;
+            default:
+                    ;
+        }
+        if (pbResVal)
+            rVal.Value >>= *pbResVal;
+    }
+}
+
+
+bool PropertyChgHelper::propertyChange_Impl( const PropertyChangeEvent& rEvt )
+{
+    bool bRes = false;
+
+    if (GetPropSet().is()  &&  rEvt.Source == GetPropSet())
+    {
+        sal_Int16 nLngSvcFlags = (nEvtFlags & AE_HYPHENATOR) ?
+                    LinguServiceEventFlags::HYPHENATE_AGAIN : 0;
+        bool bSCWA = false, // SPELL_CORRECT_WORDS_AGAIN ?
+             bSWWA = false; // SPELL_WRONG_WORDS_AGAIN ?
+
+        bool  *pbVal = nullptr;
+        switch (rEvt.PropertyHandle)
+        {
+            case UPH_IS_IGNORE_CONTROL_CHARACTERS :
+            {
+                pbVal = &bIsIgnoreControlCharacters;
+                nLngSvcFlags = 0;
+                break;
+            }
+            case UPH_IS_USE_DICTIONARY_LIST       :
+            {
+                pbVal = &bIsUseDictionaryList;
+                bSCWA = bSWWA = true;
+                break;
+            }
+        }
+        if (pbVal)
+            rEvt.NewValue >>= *pbVal;
+
+        bRes = nullptr != pbVal;  // sth changed?
+        if (bRes)
+        {
+            bool bSpellEvts = (nEvtFlags & AE_SPELLCHECKER);
+            if (bSCWA && bSpellEvts)
+                nLngSvcFlags |= LinguServiceEventFlags::SPELL_CORRECT_WORDS_AGAIN;
+            if (bSWWA && bSpellEvts)
+                nLngSvcFlags |= LinguServiceEventFlags::SPELL_WRONG_WORDS_AGAIN;
+            if (nLngSvcFlags)
+            {
+                LinguServiceEvent aEvt( GetEvtObj(), nLngSvcFlags );
+                LaunchEvent( aEvt );
+            }
+        }
+    }
+
+    return bRes;
+}
+
+
+void SAL_CALL
+    PropertyChgHelper::propertyChange( const PropertyChangeEvent& rEvt )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    propertyChange_Impl( rEvt );
+}
+
+
+void PropertyChgHelper::AddAsPropListener()
+{
+    if (xPropSet.is())
+    {
+        for (const OUString& rPropName : std::as_const(aPropNames))
+        {
+            if (!rPropName.isEmpty())
+                xPropSet->addPropertyChangeListener( rPropName, this );
+        }
+    }
+}
+
+void PropertyChgHelper::RemoveAsPropListener()
+{
+    if (xPropSet.is())
+    {
+        for (const OUString& rPropName : std::as_const(aPropNames))
+        {
+            if (!rPropName.isEmpty())
+                xPropSet->removePropertyChangeListener( rPropName, this );
+        }
+    }
+}
+
+
+void PropertyChgHelper::LaunchEvent( const LinguServiceEvent &rEvt )
+{
+    aLngSvcEvtListeners.notifyEach( &XLinguServiceEventListener::processLinguServiceEvent, rEvt );
+}
+
+
+void SAL_CALL PropertyChgHelper::disposing( const EventObject& rSource )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    if (rSource.Source == xPropSet)
+    {
+        RemoveAsPropListener();
+        xPropSet = nullptr;
+        aPropNames.clear();
+    }
+}
+
+
+sal_Bool SAL_CALL
+    PropertyChgHelper::addLinguServiceEventListener(
+            const Reference< XLinguServiceEventListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    bool bRes = false;
+    if (rxListener.is())
+    {
+        sal_Int32   nCount = aLngSvcEvtListeners.getLength();
+        bRes = aLngSvcEvtListeners.addInterface( rxListener ) != nCount;
+    }
+    return bRes;
+}
+
+
+sal_Bool SAL_CALL
+    PropertyChgHelper::removeLinguServiceEventListener(
+            const Reference< XLinguServiceEventListener >& rxListener )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    bool bRes = false;
+    if (rxListener.is())
+    {
+        sal_Int32   nCount = aLngSvcEvtListeners.getLength();
+        bRes = aLngSvcEvtListeners.removeInterface( rxListener ) != nCount;
+    }
+    return bRes;
+}
+
+
+PropertyHelper_Thes::PropertyHelper_Thes(
+        const Reference< XInterface > &rxSource,
+        Reference< XLinguProperties > const &rxPropSet ) :
+    PropertyChgHelper   ( rxSource, rxPropSet, 0 )
+{
+    SetDefaultValues();
+    GetCurrentValues();
+}
+
+
+PropertyHelper_Thes::~PropertyHelper_Thes()
+{
+}
+
+
+void SAL_CALL
+    PropertyHelper_Thes::propertyChange( const PropertyChangeEvent& rEvt )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    PropertyChgHelper::propertyChange_Impl( rEvt );
+}
+
+
+PropertyHelper_Spell::PropertyHelper_Spell(
+        const Reference< XInterface > & rxSource,
+        Reference< XLinguProperties > const &rxPropSet ) :
+    PropertyChgHelper   ( rxSource, rxPropSet, AE_SPELLCHECKER )
+{
+    auto& rPropNames = GetPropNames();
+    rPropNames.push_back(UPN_IS_SPELL_UPPER_CASE);
+    rPropNames.push_back(UPN_IS_SPELL_WITH_DIGITS);
+    rPropNames.push_back(UPN_IS_SPELL_CAPITALIZATION);
+    SetDefaultValues();
+    GetCurrentValues();
+}
+
+
+PropertyHelper_Spell::~PropertyHelper_Spell()
+{
+}
+
+
+void PropertyHelper_Spell::SetDefaultValues()
+{
+    PropertyChgHelper::SetDefaultValues();
+
+    bResIsSpellUpperCase        = bIsSpellUpperCase         = false;
+    bResIsSpellWithDigits       = bIsSpellWithDigits        = false;
+    bResIsSpellCapitalization   = bIsSpellCapitalization    = true;
+}
+
+
+void PropertyHelper_Spell::GetCurrentValues()
+{
+    PropertyChgHelper::GetCurrentValues();
+
+    const auto& rPropNames = GetPropNames();
+    if (!GetPropSet().is() || rPropNames.empty())
+        return;
+
+    for (const OUString& rPropName : rPropNames)
+    {
+        bool *pbVal     = nullptr,
+             *pbResVal  = nullptr;
+
+        if ( rPropName == UPN_IS_SPELL_UPPER_CASE )
+        {
+            pbVal    = &bIsSpellUpperCase;
+            pbResVal = &bResIsSpellUpperCase;
+        }
+        else if ( rPropName == UPN_IS_SPELL_WITH_DIGITS )
+        {
+            pbVal    = &bIsSpellWithDigits;
+            pbResVal = &bResIsSpellWithDigits;
+        }
+        else if ( rPropName == UPN_IS_SPELL_CAPITALIZATION )
+        {
+            pbVal    = &bIsSpellCapitalization;
+            pbResVal = &bResIsSpellCapitalization;
+        }
+
+        if (pbVal && pbResVal)
+        {
+            GetPropSet()->getPropertyValue( rPropName ) >>= *pbVal;
+            *pbResVal = *pbVal;
+        }
+    }
+}
+
+
+bool PropertyHelper_Spell::propertyChange_Impl( const PropertyChangeEvent& rEvt )
+{
+    bool bRes = PropertyChgHelper::propertyChange_Impl( rEvt );
+
+    if (!bRes  &&  GetPropSet().is()  &&  rEvt.Source == GetPropSet())
+    {
+        bool bSCWA = false, // SPELL_CORRECT_WORDS_AGAIN ?
+             bSWWA = false; // SPELL_WRONG_WORDS_AGAIN ?
+
+        bool *pbVal = nullptr;
+        switch (rEvt.PropertyHandle)
+        {
+            case UPH_IS_SPELL_UPPER_CASE          :
+            {
+                pbVal = &bIsSpellUpperCase;
+                bSCWA = ! *pbVal;    // sal_False->sal_True change?
+                bSWWA = !bSCWA;             // sal_True->sal_False change?
+                break;
+            }
+            case UPH_IS_SPELL_WITH_DIGITS         :
+            {
+                pbVal = &bIsSpellWithDigits;
+                bSCWA = ! *pbVal;    // sal_False->sal_True change?
+                bSWWA = !bSCWA;             // sal_True->sal_False change?
+                break;
+            }
+            case UPH_IS_SPELL_CAPITALIZATION      :
+            {
+                pbVal = &bIsSpellCapitalization;
+                bSCWA = ! *pbVal;    // sal_False->sal_True change?
+                bSWWA = !bSCWA;             // sal_True->sal_False change?
+                break;
+            }
+            default:
+                SAL_WARN( "linguistic", "unknown property" );
+        }
+        if (pbVal)
+            rEvt.NewValue >>= *pbVal;
+
+        bRes = (pbVal != nullptr);
+        if (bRes)
+        {
+            sal_Int16 nLngSvcFlags = 0;
+            if (bSCWA)
+                nLngSvcFlags |= LinguServiceEventFlags::SPELL_CORRECT_WORDS_AGAIN;
+            if (bSWWA)
+                nLngSvcFlags |= LinguServiceEventFlags::SPELL_WRONG_WORDS_AGAIN;
+            if (nLngSvcFlags)
+            {
+                LinguServiceEvent aEvt( GetEvtObj(), nLngSvcFlags );
+                LaunchEvent( aEvt );
+            }
+        }
+    }
+
+    return bRes;
+}
+
+
+void SAL_CALL
+    PropertyHelper_Spell::propertyChange( const PropertyChangeEvent& rEvt )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    propertyChange_Impl( rEvt );
+}
+
+
+void PropertyHelper_Spell::SetTmpPropVals( const PropertyValues &rPropVals )
+{
+    PropertyChgHelper::SetTmpPropVals( rPropVals );
+
+    // return value is default value unless there is an explicitly supplied
+    // temporary value
+    bResIsSpellWithDigits       = bIsSpellWithDigits;
+    bResIsSpellCapitalization   = bIsSpellCapitalization;
+    bResIsSpellUpperCase        = bIsSpellUpperCase;
+
+    for (const PropertyValue& rVal : rPropVals)
+    {
+        if ( rVal.Name == UPN_MAX_NUMBER_OF_SUGGESTIONS )
+        {
+            // special value that is not part of the property set and thus needs to be handled differently
+        }
+        else
+        {
+            bool *pbResVal = nullptr;
+            switch (rVal.Handle)
+            {
+                case UPH_IS_SPELL_UPPER_CASE     : pbResVal = &bResIsSpellUpperCase; break;
+                case UPH_IS_SPELL_WITH_DIGITS    : pbResVal = &bResIsSpellWithDigits; break;
+                case UPH_IS_SPELL_CAPITALIZATION : pbResVal = &bResIsSpellCapitalization; break;
+                default:
+                    SAL_WARN( "linguistic", "unknown property" );
+            }
+            if (pbResVal)
+                rVal.Value >>= *pbResVal;
+        }
+    }
+}
+
+PropertyHelper_Hyphen::PropertyHelper_Hyphen(
+        const Reference< XInterface > & rxSource,
+        Reference< XLinguProperties > const &rxPropSet ) :
+    PropertyChgHelper   ( rxSource, rxPropSet, AE_HYPHENATOR )
+{
+    auto& rPropNames = GetPropNames();
+    rPropNames.push_back(UPN_HYPH_MIN_LEADING);
+    rPropNames.push_back(UPN_HYPH_MIN_TRAILING);
+    rPropNames.push_back(UPN_HYPH_MIN_WORD_LENGTH);
+    SetDefaultValues();
+    GetCurrentValues();
+}
+
+
+PropertyHelper_Hyphen::~PropertyHelper_Hyphen()
+{
+}
+
+
+void PropertyHelper_Hyphen::SetDefaultValues()
+{
+    PropertyChgHelper::SetDefaultValues();
+
+    nResHyphMinLeading      = nHyphMinLeading       = 2;
+    nResHyphMinTrailing     = nHyphMinTrailing      = 2;
+    nResHyphMinWordLength   = nHyphMinWordLength    = 0;
+    bResNoHyphenateCaps = bNoHyphenateCaps = false;
+}
+
+
+void PropertyHelper_Hyphen::GetCurrentValues()
+{
+    PropertyChgHelper::GetCurrentValues();
+
+    const auto& rPropNames = GetPropNames();
+    if (!GetPropSet().is() || rPropNames.empty())
+        return;
+
+    for (const OUString& rPropName : rPropNames)
+    {
+        sal_Int16  *pnVal    = nullptr,
+               *pnResVal = nullptr;
+        bool *pbVal = nullptr;
+        bool *pbResVal = nullptr;
+
+        if ( rPropName == UPN_HYPH_MIN_LEADING )
+        {
+            pnVal    = &nHyphMinLeading;
+            pnResVal = &nResHyphMinLeading;
+        }
+        else if ( rPropName == UPN_HYPH_MIN_TRAILING )
+        {
+            pnVal    = &nHyphMinTrailing;
+            pnResVal = &nResHyphMinTrailing;
+        }
+        else if ( rPropName == UPN_HYPH_MIN_WORD_LENGTH )
+        {
+            pnVal    = &nHyphMinWordLength;
+            pnResVal = &nResHyphMinWordLength;
+        }
+        else if ( rPropName == UPN_HYPH_NO_CAPS )
+        {
+            pbVal    = &bNoHyphenateCaps;
+            pbResVal = &bResNoHyphenateCaps;
+        }
+
+        if (pnVal && pnResVal)
+        {
+            GetPropSet()->getPropertyValue( rPropName ) >>= *pnVal;
+            *pnResVal = *pnVal;
+        }
+        else if (pbVal && pbResVal)
+        {
+            GetPropSet()->getPropertyValue( rPropName ) >>= *pbVal;
+            *pbResVal = *pbVal;
+        }
+    }
+}
+
+
+bool PropertyHelper_Hyphen::propertyChange_Impl( const PropertyChangeEvent& rEvt )
+{
+    bool bRes = PropertyChgHelper::propertyChange_Impl( rEvt );
+
+    if (!bRes  &&  GetPropSet().is()  &&  rEvt.Source == GetPropSet())
+    {
+        sal_Int16   *pnVal = nullptr;
+        bool *pbVal = nullptr;
+        switch (rEvt.PropertyHandle)
+        {
+            case UPH_HYPH_MIN_LEADING     : pnVal = &nHyphMinLeading; break;
+            case UPH_HYPH_MIN_TRAILING    : pnVal = &nHyphMinTrailing; break;
+            case UPH_HYPH_MIN_WORD_LENGTH : pnVal = &nHyphMinWordLength; break;
+            case UPH_HYPH_NO_CAPS : pbVal = &bNoHyphenateCaps; break;
+            default:
+                SAL_WARN( "linguistic", "unknown property" );
+        }
+        if (pnVal)
+            rEvt.NewValue >>= *pnVal;
+        else if (pbVal)
+            rEvt.NewValue >>= *pbVal;
+
+        bRes = (pnVal != nullptr || pbVal != nullptr);
+        if (bRes)
+        {
+            LinguServiceEvent aEvt(GetEvtObj(), LinguServiceEventFlags::HYPHENATE_AGAIN);
+            LaunchEvent(aEvt);
+        }
+    }
+
+    return bRes;
+}
+
+
+void SAL_CALL
+    PropertyHelper_Hyphen::propertyChange( const PropertyChangeEvent& rEvt )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    propertyChange_Impl( rEvt );
+}
+
+
+void PropertyHelper_Hyphen::SetTmpPropVals( const PropertyValues &rPropVals )
+{
+    PropertyChgHelper::SetTmpPropVals( rPropVals );
+
+    // return value is default value unless there is an explicitly supplied
+    // temporary value
+    nResHyphMinLeading      = nHyphMinLeading;
+    nResHyphMinTrailing     = nHyphMinTrailing;
+    nResHyphMinWordLength   = nHyphMinWordLength;
+    bResNoHyphenateCaps = bNoHyphenateCaps;
+
+    for (const PropertyValue& rVal : rPropVals)
+    {
+        sal_Int16 *pnResVal = nullptr;
+        bool *pbResVal = nullptr;
+
+        if ( rVal.Name == UPN_HYPH_MIN_LEADING )
+            pnResVal = &nResHyphMinLeading;
+        else if ( rVal.Name == UPN_HYPH_MIN_TRAILING )
+            pnResVal = &nResHyphMinTrailing;
+        else if ( rVal.Name == UPN_HYPH_MIN_WORD_LENGTH )
+            pnResVal = &nResHyphMinWordLength;
+        else if ( rVal.Name == UPN_HYPH_NO_CAPS )
+            pbResVal = &bResNoHyphenateCaps;
+
+        DBG_ASSERT( pnResVal || pbResVal, "unknown property" );
+
+        if (pnResVal)
+            rVal.Value >>= *pnResVal;
+        else if (pbResVal)
+            rVal.Value >>= *pbResVal;
+    }
+}
+
+PropertyHelper_Thesaurus::PropertyHelper_Thesaurus(
+            const css::uno::Reference< css::uno::XInterface > &rxSource,
+            css::uno::Reference< css::linguistic2::XLinguProperties > const &rxPropSet )
+{
+    mxPropHelper = new PropertyHelper_Thes( rxSource, rxPropSet );
+}
+
+PropertyHelper_Thesaurus::~PropertyHelper_Thesaurus()
+{
+}
+
+void PropertyHelper_Thesaurus::AddAsPropListener()
+{
+    mxPropHelper->AddAsPropListener();
+}
+
+void PropertyHelper_Thesaurus::RemoveAsPropListener()
+{
+    mxPropHelper->RemoveAsPropListener();
+}
+
+void PropertyHelper_Thesaurus::SetTmpPropVals( const css::beans::PropertyValues &rPropVals )
+{
+    mxPropHelper->SetTmpPropVals( rPropVals );
+}
+
+PropertyHelper_Hyphenation::PropertyHelper_Hyphenation(
+            const css::uno::Reference< css::uno::XInterface > &rxSource,
+            css::uno::Reference< css::linguistic2::XLinguProperties > const &rxPropSet)
+{
+    mxPropHelper = new PropertyHelper_Hyphen( rxSource, rxPropSet );
+}
+
+PropertyHelper_Hyphenation::~PropertyHelper_Hyphenation()
+{
+}
+
+void PropertyHelper_Hyphenation::AddAsPropListener()
+{
+    mxPropHelper->AddAsPropListener();
+}
+
+void PropertyHelper_Hyphenation::RemoveAsPropListener()
+{
+    mxPropHelper->RemoveAsPropListener();
+}
+
+void PropertyHelper_Hyphenation::SetTmpPropVals( const css::beans::PropertyValues &rPropVals )
+{
+    mxPropHelper->SetTmpPropVals( rPropVals );
+}
+
+sal_Int16 PropertyHelper_Hyphenation::GetMinLeading() const
+{
+    return mxPropHelper->GetMinLeading();
+}
+
+sal_Int16 PropertyHelper_Hyphenation::GetMinTrailing() const
+{
+    return mxPropHelper->GetMinTrailing();
+}
+
+sal_Int16 PropertyHelper_Hyphenation::GetMinWordLength() const
+{
+    return mxPropHelper->GetMinWordLength();
+}
+
+bool PropertyHelper_Hyphenation::IsNoHyphenateCaps() const
+{
+    return mxPropHelper->IsNoHyphenateCaps();
+}
+
+bool PropertyHelper_Hyphenation::addLinguServiceEventListener(
+                const css::uno::Reference< css::linguistic2::XLinguServiceEventListener >& rxListener )
+{
+    return mxPropHelper->addLinguServiceEventListener( rxListener );
+}
+
+bool PropertyHelper_Hyphenation::removeLinguServiceEventListener(
+                const css::uno::Reference< css::linguistic2::XLinguServiceEventListener >& rxListener )
+{
+    return mxPropHelper->removeLinguServiceEventListener( rxListener );
+}
+
+PropertyHelper_Spelling::PropertyHelper_Spelling(
+            const css::uno::Reference< css::uno::XInterface > &rxSource,
+            css::uno::Reference< css::linguistic2::XLinguProperties > const &rxPropSet )
+{
+    mxPropHelper = new PropertyHelper_Spell( rxSource, rxPropSet );
+}
+
+PropertyHelper_Spelling::~PropertyHelper_Spelling()
+{
+}
+
+void PropertyHelper_Spelling::AddAsPropListener()
+{
+    mxPropHelper->AddAsPropListener();
+}
+
+void PropertyHelper_Spelling::RemoveAsPropListener()
+{
+    mxPropHelper->RemoveAsPropListener();
+}
+
+void PropertyHelper_Spelling::SetTmpPropVals( const css::beans::PropertyValues &rPropVals )
+{
+    mxPropHelper->SetTmpPropVals( rPropVals );
+}
+
+bool PropertyHelper_Spelling::IsSpellUpperCase() const
+{
+    return mxPropHelper->IsSpellUpperCase();
+}
+
+bool PropertyHelper_Spelling::IsSpellWithDigits() const
+{
+    return mxPropHelper->IsSpellWithDigits();
+}
+
+bool PropertyHelper_Spelling::IsSpellCapitalization() const
+{
+    return mxPropHelper->IsSpellCapitalization();
+}
+
+bool PropertyHelper_Spelling::addLinguServiceEventListener(
+                const css::uno::Reference<
+                    css::linguistic2::XLinguServiceEventListener >& rxListener )
+{
+    return mxPropHelper->addLinguServiceEventListener( rxListener );
+}
+
+bool PropertyHelper_Spelling::removeLinguServiceEventListener(
+                const css::uno::Reference<
+                    css::linguistic2::XLinguServiceEventListener >& rxListener )
+{
+    return mxPropHelper->removeLinguServiceEventListener( rxListener );
+}
+
+}   // namespace linguistic
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/lngsvcmgr.cxx b/linguistic/source/lngsvcmgr.cxx
new file mode 100644
index 000000000..f38ee2620
--- /dev/null
+++ b/linguistic/source/lngsvcmgr.cxx
@@ -0,0 +1,1830 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+#include <sal/log.hxx>
+
+#include <com/sun/star/deployment/DeploymentException.hpp>
+#include <com/sun/star/deployment/ExtensionManager.hpp>
+#include <com/sun/star/container/XContentEnumerationAccess.hpp>
+#include <com/sun/star/container/XEnumeration.hpp>
+#include <com/sun/star/lang/XSingleComponentFactory.hpp>
+#include <com/sun/star/lang/XSingleServiceFactory.hpp>
+#include <com/sun/star/linguistic2/XSupportedLocales.hpp>
+#include <com/sun/star/linguistic2/DictionaryListEventFlags.hpp>
+#include <com/sun/star/linguistic2/LinguServiceEventFlags.hpp>
+#include <com/sun/star/linguistic2/ProofreadingIterator.hpp>
+
+#include <tools/debug.hxx>
+#include <unotools/lingucfg.hxx>
+#include <utility>
+#include <vcl/svapp.hxx>
+#include <comphelper/interfacecontainer2.hxx>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/sequence.hxx>
+#include <i18nlangtag/lang.h>
+#include <i18nlangtag/languagetag.hxx>
+#include <cppuhelper/factory.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <cppuhelper/weak.hxx>
+
+#include "lngsvcmgr.hxx"
+#include <linguistic/misc.hxx>
+#include "spelldsp.hxx"
+#include "hyphdsp.hxx"
+#include "thesdsp.hxx"
+#include "gciterator.hxx"
+
+using namespace com::sun::star;
+using namespace linguistic;
+
+uno::Sequence< OUString > static GetLangSvcList( const uno::Any &rVal );
+uno::Sequence< OUString > static GetLangSvc( const uno::Any &rVal );
+
+static bool lcl_SeqHasString( const uno::Sequence< OUString > &rSeq, const OUString &rText )
+{
+    return !rText.isEmpty()
+        && comphelper::findValue(rSeq, rText) != -1;
+}
+
+
+static uno::Sequence< lang::Locale > GetAvailLocales(
+        const uno::Sequence< OUString > &rSvcImplNames )
+{
+    uno::Sequence< lang::Locale > aRes;
+
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+    if( rSvcImplNames.hasElements() )
+    {
+        std::set< LanguageType > aLanguages;
+
+        // All of these services only use one arg, but need two args for compat reasons
+        uno::Sequence< uno::Any > aArgs(2);
+        aArgs.getArray()[0] <<= GetLinguProperties();
+
+        // check all services for the supported languages and new
+        // languages to the result
+
+        for (const OUString& rImplName : rSvcImplNames)
+        {
+            uno::Reference< linguistic2::XSupportedLocales > xSuppLoc;
+            try
+            {
+                xSuppLoc.set( xContext->getServiceManager()->createInstanceWithArgumentsAndContext(
+                                 rImplName, aArgs, xContext ),
+                              uno::UNO_QUERY );
+            }
+            catch (uno::Exception &)
+            {
+                SAL_WARN( "linguistic", "createInstanceWithArguments failed" );
+            }
+
+            if (xSuppLoc.is())
+            {
+                const uno::Sequence< lang::Locale > aLoc( xSuppLoc->getLocales() );
+                for (const lang::Locale& rLoc : aLoc)
+                {
+                    LanguageType nLang = LinguLocaleToLanguage( rLoc );
+
+                    // It's a set, so insertion fails if language was already added.
+                    aLanguages.insert( nLang );
+                }
+            }
+            else
+            {
+                SAL_WARN( "linguistic", "interface not supported by service" );
+            }
+        }
+
+        // build return sequence
+        std::vector<lang::Locale> aVec;
+        aVec.reserve(aLanguages.size());
+
+        std::transform(aLanguages.begin(), aLanguages.end(), std::back_inserter(aVec),
+            [](const LanguageType& rLang) -> lang::Locale { return LanguageTag::convertToLocale(rLang); });
+
+        aRes = comphelper::containerToSequence(aVec);
+    }
+
+    return aRes;
+}
+
+
+struct SvcInfo
+{
+    const OUString                  aSvcImplName;
+    const std::vector< LanguageType >    aSuppLanguages;
+
+    SvcInfo( OUString aSvcImplName_,
+             std::vector< LanguageType >&& rSuppLanguages ) :
+        aSvcImplName    (std::move(aSvcImplName_)),
+        aSuppLanguages  (std::move(rSuppLanguages))
+    {
+    }
+
+    bool    HasLanguage( LanguageType nLanguage ) const;
+};
+
+
+bool SvcInfo::HasLanguage( LanguageType nLanguage ) const
+{
+    for ( auto const & i : aSuppLanguages)
+    {
+        if (nLanguage == i)
+            return true;
+    }
+    return false;
+}
+
+class LngSvcMgrListenerHelper :
+    public cppu::WeakImplHelper
+    <
+        linguistic2::XLinguServiceEventListener,
+        linguistic2::XDictionaryListEventListener
+    >
+{
+    LngSvcMgr  &rMyManager;
+
+    ::comphelper::OInterfaceContainerHelper2           aLngSvcMgrListeners;
+    ::comphelper::OInterfaceContainerHelper2           aLngSvcEvtBroadcasters;
+    uno::Reference< linguistic2::XSearchableDictionaryList >           xDicList;
+
+    sal_Int16   nCombinedLngSvcEvt;
+
+    void    LaunchEvent( sal_Int16 nLngSvcEvtFlags );
+
+    void Timeout();
+
+public:
+    LngSvcMgrListenerHelper( LngSvcMgr &rLngSvcMgr,
+        uno::Reference< linguistic2::XSearchableDictionaryList > xDicList );
+
+    LngSvcMgrListenerHelper(const LngSvcMgrListenerHelper&) = delete;
+    LngSvcMgrListenerHelper& operator=(const LngSvcMgrListenerHelper&) = delete;
+
+    // lang::XEventListener
+    virtual void SAL_CALL
+        disposing( const lang::EventObject& rSource ) override;
+
+    // linguistic2::XLinguServiceEventListener
+    virtual void SAL_CALL
+        processLinguServiceEvent( const linguistic2::LinguServiceEvent& aLngSvcEvent ) override;
+
+    // linguistic2::XDictionaryListEventListener
+    virtual void SAL_CALL
+        processDictionaryListEvent(
+                const linguistic2::DictionaryListEvent& rDicListEvent ) override;
+
+    inline  void    AddLngSvcMgrListener(
+                        const uno::Reference< lang::XEventListener >& rxListener );
+    inline  void    RemoveLngSvcMgrListener(
+                        const uno::Reference< lang::XEventListener >& rxListener );
+    void    DisposeAndClear( const lang::EventObject &rEvtObj );
+    void    AddLngSvcEvtBroadcaster(
+                        const uno::Reference< linguistic2::XLinguServiceEventBroadcaster > &rxBroadcaster );
+    void    RemoveLngSvcEvtBroadcaster(
+                        const uno::Reference< linguistic2::XLinguServiceEventBroadcaster > &rxBroadcaster );
+
+    void    AddLngSvcEvt( sal_Int16 nLngSvcEvt );
+};
+
+
+LngSvcMgrListenerHelper::LngSvcMgrListenerHelper(
+        LngSvcMgr &rLngSvcMgr,
+        uno::Reference< linguistic2::XSearchableDictionaryList > xDicList_ ) :
+    rMyManager              ( rLngSvcMgr ),
+    aLngSvcMgrListeners     ( GetLinguMutex() ),
+    aLngSvcEvtBroadcasters  ( GetLinguMutex() ),
+    xDicList                (std::move( xDicList_ ))
+{
+    if (xDicList.is())
+    {
+        xDicList->addDictionaryListEventListener(
+            static_cast<linguistic2::XDictionaryListEventListener *>(this), false );
+    }
+
+    nCombinedLngSvcEvt = 0;
+}
+
+
+void SAL_CALL LngSvcMgrListenerHelper::disposing( const lang::EventObject& rSource )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    uno::Reference< uno::XInterface > xRef( rSource.Source );
+    if ( xRef.is() )
+    {
+        aLngSvcMgrListeners   .removeInterface( xRef );
+        aLngSvcEvtBroadcasters.removeInterface( xRef );
+        if (xDicList == xRef)
+            xDicList = nullptr;
+    }
+}
+
+void LngSvcMgrListenerHelper::Timeout()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    {
+        // change event source to LinguServiceManager since the listeners
+        // probably do not know (and need not to know) about the specific
+        // SpellChecker's or Hyphenator's.
+        linguistic2::LinguServiceEvent aEvtObj(
+            static_cast<css::linguistic2::XLinguServiceManager*>(&rMyManager), nCombinedLngSvcEvt );
+        nCombinedLngSvcEvt = 0;
+
+        if (rMyManager.mxSpellDsp.is())
+            rMyManager.mxSpellDsp->FlushSpellCache();
+
+        // pass event on to linguistic2::XLinguServiceEventListener's
+        aLngSvcMgrListeners.notifyEach( &linguistic2::XLinguServiceEventListener::processLinguServiceEvent, aEvtObj );
+    }
+}
+
+
+void LngSvcMgrListenerHelper::AddLngSvcEvt( sal_Int16 nLngSvcEvt )
+{
+    nCombinedLngSvcEvt |= nLngSvcEvt;
+    Timeout();
+}
+
+
+void SAL_CALL
+    LngSvcMgrListenerHelper::processLinguServiceEvent(
+            const linguistic2::LinguServiceEvent& rLngSvcEvent )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+    AddLngSvcEvt( rLngSvcEvent.nEvent );
+}
+
+
+void SAL_CALL
+    LngSvcMgrListenerHelper::processDictionaryListEvent(
+            const linguistic2::DictionaryListEvent& rDicListEvent )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    sal_Int16 nDlEvt = rDicListEvent.nCondensedEvent;
+    if (0 == nDlEvt)
+        return;
+
+    // we do keep the original event source here though...
+
+    // pass event on to linguistic2::XDictionaryListEventListener's
+    aLngSvcMgrListeners.notifyEach( &linguistic2::XDictionaryListEventListener::processDictionaryListEvent, rDicListEvent );
+
+    // "translate" DictionaryList event into linguistic2::LinguServiceEvent
+    sal_Int16 nLngSvcEvt = 0;
+    sal_Int16 const nSpellCorrectFlags =
+            linguistic2::DictionaryListEventFlags::ADD_NEG_ENTRY        |
+            linguistic2::DictionaryListEventFlags::DEL_POS_ENTRY        |
+            linguistic2::DictionaryListEventFlags::ACTIVATE_NEG_DIC |
+            linguistic2::DictionaryListEventFlags::DEACTIVATE_POS_DIC;
+    if (0 != (nDlEvt & nSpellCorrectFlags))
+        nLngSvcEvt |= linguistic2::LinguServiceEventFlags::SPELL_CORRECT_WORDS_AGAIN;
+
+    sal_Int16 const nSpellWrongFlags =
+            linguistic2::DictionaryListEventFlags::ADD_POS_ENTRY        |
+            linguistic2::DictionaryListEventFlags::DEL_NEG_ENTRY        |
+            linguistic2::DictionaryListEventFlags::ACTIVATE_POS_DIC |
+            linguistic2::DictionaryListEventFlags::DEACTIVATE_NEG_DIC;
+    if (0 != (nDlEvt & nSpellWrongFlags))
+        nLngSvcEvt |= linguistic2::LinguServiceEventFlags::SPELL_WRONG_WORDS_AGAIN;
+
+    sal_Int16 const nHyphenateFlags =
+            linguistic2::DictionaryListEventFlags::ADD_POS_ENTRY        |
+            linguistic2::DictionaryListEventFlags::DEL_POS_ENTRY        |
+            linguistic2::DictionaryListEventFlags::ACTIVATE_POS_DIC |
+            linguistic2::DictionaryListEventFlags::ACTIVATE_NEG_DIC;
+    if (0 != (nDlEvt & nHyphenateFlags))
+        nLngSvcEvt |= linguistic2::LinguServiceEventFlags::HYPHENATE_AGAIN;
+
+    if (rMyManager.mxSpellDsp.is())
+        rMyManager.mxSpellDsp->FlushSpellCache();
+    if (nLngSvcEvt)
+        LaunchEvent( nLngSvcEvt );
+}
+
+
+void LngSvcMgrListenerHelper::LaunchEvent( sal_Int16 nLngSvcEvtFlags )
+{
+    linguistic2::LinguServiceEvent aEvt(
+        static_cast<css::linguistic2::XLinguServiceManager*>(&rMyManager), nLngSvcEvtFlags );
+
+    // pass event on to linguistic2::XLinguServiceEventListener's
+    aLngSvcMgrListeners.notifyEach( &linguistic2::XLinguServiceEventListener::processLinguServiceEvent, aEvt );
+}
+
+
+inline void LngSvcMgrListenerHelper::AddLngSvcMgrListener(
+        const uno::Reference< lang::XEventListener >& rxListener )
+{
+    aLngSvcMgrListeners.addInterface( rxListener );
+}
+
+
+inline void LngSvcMgrListenerHelper::RemoveLngSvcMgrListener(
+        const uno::Reference< lang::XEventListener >& rxListener )
+{
+    aLngSvcMgrListeners.removeInterface( rxListener );
+}
+
+
+void LngSvcMgrListenerHelper::DisposeAndClear( const lang::EventObject &rEvtObj )
+{
+    // call "disposing" for all listeners and clear list
+    aLngSvcMgrListeners   .disposeAndClear( rEvtObj );
+
+    // remove references to this object hold by the broadcasters
+    comphelper::OInterfaceIteratorHelper2 aIt( aLngSvcEvtBroadcasters );
+    while (aIt.hasMoreElements())
+    {
+        uno::Reference< linguistic2::XLinguServiceEventBroadcaster > xRef( aIt.next(), uno::UNO_QUERY );
+        if (xRef.is())
+            RemoveLngSvcEvtBroadcaster( xRef );
+    }
+
+    // remove reference to this object hold by the dictionary-list
+    if (xDicList.is())
+    {
+        xDicList->removeDictionaryListEventListener(
+            static_cast<linguistic2::XDictionaryListEventListener *>(this) );
+        xDicList = nullptr;
+    }
+}
+
+
+void LngSvcMgrListenerHelper::AddLngSvcEvtBroadcaster(
+        const uno::Reference< linguistic2::XLinguServiceEventBroadcaster > &rxBroadcaster )
+{
+    if (rxBroadcaster.is())
+    {
+        aLngSvcEvtBroadcasters.addInterface( rxBroadcaster );
+        rxBroadcaster->addLinguServiceEventListener(
+                static_cast<linguistic2::XLinguServiceEventListener *>(this) );
+    }
+}
+
+
+void LngSvcMgrListenerHelper::RemoveLngSvcEvtBroadcaster(
+        const uno::Reference< linguistic2::XLinguServiceEventBroadcaster > &rxBroadcaster )
+{
+    if (rxBroadcaster.is())
+    {
+        aLngSvcEvtBroadcasters.removeInterface( rxBroadcaster );
+        rxBroadcaster->removeLinguServiceEventListener(
+                static_cast<linguistic2::XLinguServiceEventListener *>(this) );
+    }
+}
+
+
+LngSvcMgr::LngSvcMgr()
+    : utl::ConfigItem("Office.Linguistic")
+    , aEvtListeners(GetLinguMutex())
+    , aUpdateIdle("LngSvcMgr aUpdateIdle")
+{
+    bDisposing = false;
+
+    // request notify events when properties (i.e. something in the subtree) changes
+    uno::Sequence< OUString > aNames{
+        "ServiceManager/SpellCheckerList",
+        "ServiceManager/GrammarCheckerList",
+        "ServiceManager/HyphenatorList",
+        "ServiceManager/ThesaurusList"
+    };
+    EnableNotification( aNames );
+
+    UpdateAll();
+
+    aUpdateIdle.SetPriority(TaskPriority::LOWEST);
+    aUpdateIdle.SetInvokeHandler(LINK(this, LngSvcMgr, updateAndBroadcast));
+
+    // request to be notified if an extension has been added/removed
+    uno::Reference<uno::XComponentContext> xContext(comphelper::getProcessComponentContext());
+
+    uno::Reference<deployment::XExtensionManager> xExtensionManager;
+    try {
+        xExtensionManager = deployment::ExtensionManager::get(xContext);
+    } catch ( const uno::DeploymentException & ) {
+        SAL_WARN( "linguistic", "no extension manager - should fire on mobile only" );
+    } catch ( const deployment::DeploymentException & ) {
+        SAL_WARN( "linguistic", "no extension manager - should fire on mobile only" );
+    }
+    if (xExtensionManager.is())
+    {
+        xMB.set(xExtensionManager, uno::UNO_QUERY_THROW);
+
+        uno::Reference<util::XModifyListener> xListener(this);
+        xMB->addModifyListener( xListener );
+    }
+}
+
+// css::util::XModifyListener
+void LngSvcMgr::modified(const lang::EventObject&)
+{
+    {
+        osl::MutexGuard aGuard(GetLinguMutex());
+        //assume that if an extension has been added/removed that
+        //it might be a dictionary extension, so drop our cache
+
+        pAvailSpellSvcs.reset();
+        pAvailGrammarSvcs.reset();
+        pAvailHyphSvcs.reset();
+        pAvailThesSvcs.reset();
+    }
+
+    {
+        SolarMutexGuard aGuard;
+        //schedule in an update to execute in the main thread
+        aUpdateIdle.Start();
+    }
+}
+
+//run update, and inform everyone that dictionaries (may) have changed, this
+//needs to be run in the main thread because
+//utl::ConfigChangeListener_Impl::changesOccurred grabs the SolarMutex and we
+//get notified that an extension was added from an extension manager thread
+IMPL_LINK_NOARG(LngSvcMgr, updateAndBroadcast, Timer *, void)
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    UpdateAll();
+
+    if (mxListenerHelper.is())
+    {
+        mxListenerHelper->AddLngSvcEvt(
+                linguistic2::LinguServiceEventFlags::SPELL_CORRECT_WORDS_AGAIN |
+                linguistic2::LinguServiceEventFlags::SPELL_WRONG_WORDS_AGAIN |
+                linguistic2::LinguServiceEventFlags::PROOFREAD_AGAIN |
+                linguistic2::LinguServiceEventFlags::HYPHENATE_AGAIN );
+    }
+}
+
+void LngSvcMgr::stopListening()
+{
+    osl::MutexGuard aGuard(GetLinguMutex());
+
+    if (!xMB.is())
+        return;
+
+    try
+    {
+            uno::Reference<util::XModifyListener>  xListener(this);
+            xMB->removeModifyListener(xListener);
+    }
+    catch (const uno::Exception&)
+    {
+    }
+
+    xMB.clear();
+}
+
+void LngSvcMgr::disposing(const lang::EventObject&)
+{
+    stopListening();
+}
+
+LngSvcMgr::~LngSvcMgr()
+{
+    stopListening();
+
+    // memory for pSpellDsp, pHyphDsp, pThesDsp, pListenerHelper
+    // will be freed in the destructor of the respective Reference's
+    // xSpellDsp, xGrammarDsp, xHyphDsp, xThesDsp
+
+    pAvailSpellSvcs.reset();
+    pAvailGrammarSvcs.reset();
+    pAvailHyphSvcs.reset();
+    pAvailThesSvcs.reset();
+}
+
+namespace
+{
+    using lang::Locale;
+    using uno::Any;
+    using uno::Sequence;
+
+    bool lcl_FindEntry( const OUString &rEntry, const Sequence< OUString > &rCfgSvcs )
+    {
+        return comphelper::findValue(rCfgSvcs, rEntry) != -1;
+    }
+
+    bool lcl_FindEntry( const OUString &rEntry, const std::vector< OUString > &rCfgSvcs )
+    {
+        return std::find(rCfgSvcs.begin(), rCfgSvcs.end(), rEntry) != rCfgSvcs.end();
+    }
+
+    Sequence< OUString > lcl_GetLastFoundSvcs(
+            SvtLinguConfig const &rCfg,
+            const OUString &rLastFoundList ,
+            const OUString& rCfgLocaleStr )
+    {
+        Sequence< OUString > aRes;
+
+        Sequence< OUString > aNodeNames( rCfg.GetNodeNames(rLastFoundList) );
+        bool bFound = lcl_FindEntry( rCfgLocaleStr, aNodeNames);
+
+        if (bFound)
+        {
+            Sequence< OUString > aNames { rLastFoundList + "/" + rCfgLocaleStr };
+            Sequence< Any > aValues( rCfg.GetProperties( aNames ) );
+            if (aValues.hasElements())
+            {
+                SAL_WARN_IF( aValues.getLength() != 1, "linguistic", "unexpected length of sequence" );
+                Sequence< OUString > aSvcImplNames;
+                if (aValues.getConstArray()[0] >>= aSvcImplNames)
+                    aRes = aSvcImplNames;
+                else
+                {
+                    SAL_WARN( "linguistic", "type mismatch" );
+                }
+            }
+        }
+
+        return aRes;
+    }
+
+    Sequence< OUString > lcl_RemoveMissingEntries(
+            const Sequence< OUString > &rCfgSvcs,
+            const Sequence< OUString > &rAvailSvcs )
+    {
+        std::vector<OUString> aRes;
+        aRes.reserve(rCfgSvcs.getLength());
+
+        std::copy_if(rCfgSvcs.begin(), rCfgSvcs.end(), std::back_inserter(aRes),
+            [&rAvailSvcs](const OUString& entry) { return lcl_SeqHasString(rAvailSvcs, entry); });
+
+        return comphelper::containerToSequence(aRes);
+    }
+
+    Sequence< OUString > lcl_GetNewEntries(
+            const Sequence< OUString > &rLastFoundSvcs,
+            const Sequence< OUString > &rAvailSvcs )
+    {
+        std::vector<OUString> aRes;
+        aRes.reserve(rAvailSvcs.getLength());
+
+        std::copy_if(rAvailSvcs.begin(), rAvailSvcs.end(), std::back_inserter(aRes),
+            [&rLastFoundSvcs](const OUString& rEntry) {
+                return !rEntry.isEmpty() && !lcl_FindEntry( rEntry, rLastFoundSvcs ); });
+
+        return comphelper::containerToSequence(aRes);
+    }
+
+    Sequence< OUString > lcl_MergeSeq(
+            const Sequence< OUString > &rCfgSvcs,
+            const Sequence< OUString > &rNewSvcs )
+    {
+        std::vector<OUString> aRes;
+        aRes.reserve(rCfgSvcs.getLength() + rNewSvcs.getLength());
+
+        auto lVecNotHasString = [&aRes](const OUString& rEntry)
+            { return !rEntry.isEmpty() && !lcl_FindEntry(rEntry, aRes); };
+
+        // add previously configured service first and append
+        // new found services at the end
+        for (const Sequence< OUString > &rSeq : { rCfgSvcs, rNewSvcs })
+        {
+            std::copy_if(rSeq.begin(), rSeq.end(), std::back_inserter(aRes), lVecNotHasString);
+        }
+
+        return comphelper::containerToSequence(aRes);
+    }
+}
+
+void LngSvcMgr::UpdateAll()
+{
+    using beans::PropertyValue;
+    using lang::Locale;
+    using uno::Sequence;
+
+    typedef std::map< OUString, Sequence< OUString > > list_entry_map_t;
+
+    SvtLinguConfig aCfg;
+
+    const int nNumServices = 4;
+    static constexpr rtl::OUStringConstExpr apServices[nNumServices] =  { SN_SPELLCHECKER, SN_GRAMMARCHECKER, SN_HYPHENATOR, SN_THESAURUS };
+    const char * const apCurLists[nNumServices]       =  { "ServiceManager/SpellCheckerList",       "ServiceManager/GrammarCheckerList",       "ServiceManager/HyphenatorList",       "ServiceManager/ThesaurusList" };
+    const char * const apLastFoundLists[nNumServices] =  { "ServiceManager/LastFoundSpellCheckers", "ServiceManager/LastFoundGrammarCheckers", "ServiceManager/LastFoundHyphenators", "ServiceManager/LastFoundThesauri" };
+
+    // usage of indices as above: 0 = spell checker, 1 = grammar checker, 2 = hyphenator, 3 = thesaurus
+    std::vector< list_entry_map_t > aLastFoundSvcs(nNumServices);
+    std::vector< list_entry_map_t > aCurSvcs(nNumServices);
+
+    for (int k = 0;  k < nNumServices;  ++k)
+    {
+        OUString aService( apServices[k] );
+        OUString aActiveList( OUString::createFromAscii( apCurLists[k] ) );
+        OUString aLastFoundList( OUString::createFromAscii( apLastFoundLists[k] ) );
+
+
+        // remove configured but not available language/services entries
+
+        const Sequence< OUString > aNodeNames( aCfg.GetNodeNames( aActiveList ) );   // list of configured locales
+        for (const OUString& rNodeName : aNodeNames)
+        {
+            Locale aLocale( LanguageTag::convertToLocale( rNodeName));
+            Sequence< OUString > aCfgSvcs( getConfiguredServices( aService, aLocale ));
+            Sequence< OUString > aAvailSvcs( getAvailableServices( aService, aLocale ));
+
+            aCfgSvcs = lcl_RemoveMissingEntries( aCfgSvcs, aAvailSvcs );
+
+            aCurSvcs[k][ rNodeName ] = aCfgSvcs;
+        }
+
+
+        // add new available language/service entries
+        // and
+        // set last found services to currently available ones
+
+        const Sequence< Locale > aAvailLocales( getAvailableLocales(aService) );
+        for (const Locale& rAvailLocale : aAvailLocales)
+        {
+            OUString aCfgLocaleStr( LanguageTag::convertToBcp47( rAvailLocale));
+
+            Sequence< OUString > aAvailSvcs( getAvailableServices( aService, rAvailLocale ));
+
+            aLastFoundSvcs[k][ aCfgLocaleStr ] = aAvailSvcs;
+
+            Sequence< OUString > aLastSvcs(
+                    lcl_GetLastFoundSvcs( aCfg, aLastFoundList , aCfgLocaleStr ));
+            Sequence< OUString > aNewSvcs =
+                    lcl_GetNewEntries( aLastSvcs, aAvailSvcs );
+
+            Sequence< OUString > aCfgSvcs( aCurSvcs[k][ aCfgLocaleStr ] );
+
+            // merge services list (previously configured to be listed first).
+            aCfgSvcs = lcl_MergeSeq( aCfgSvcs, aNewSvcs );
+
+            aCurSvcs[k][ aCfgLocaleStr ] = aCfgSvcs;
+        }
+    }
+
+
+    // write new data back to configuration
+
+    for (int k = 0;  k < nNumServices;  ++k)
+    {
+        for (int i = 0;  i < 2;  ++i)
+        {
+            const char *pSubNodeName = (i == 0) ? apCurLists[k] : apLastFoundLists[k];
+            OUString aSubNodeName( OUString::createFromAscii(pSubNodeName) );
+
+            list_entry_map_t &rCurMap = (i == 0) ? aCurSvcs[k] : aLastFoundSvcs[k];
+            sal_Int32 nVals = static_cast< sal_Int32 >( rCurMap.size() );
+            Sequence< PropertyValue > aNewValues( nVals );
+            PropertyValue *pNewValue = aNewValues.getArray();
+            for (auto const& elem : rCurMap)
+            {
+                pNewValue->Name = aSubNodeName + "/" + elem.first;
+                pNewValue->Value <<= elem.second;
+                ++pNewValue;
+            }
+            OSL_ENSURE( pNewValue - aNewValues.getConstArray() == nVals,
+                    "possible mismatch of sequence size and property number" );
+
+            {
+                // add new or replace existing entries.
+                bool bRes = aCfg.ReplaceSetProperties( aSubNodeName, aNewValues );
+                SAL_WARN_IF(!bRes, "linguistic", "failed to set new configuration values");
+            }
+        }
+    }
+
+    //The new settings in the configuration get applied ! because we are
+    //listening to the configuration for changes of the relevant ! properties
+    //and Notify applies the new settings.
+}
+
+void LngSvcMgr::Notify( const uno::Sequence< OUString > &rPropertyNames )
+{
+    static const OUStringLiteral aSpellCheckerList( u"ServiceManager/SpellCheckerList" );
+    static const OUStringLiteral aGrammarCheckerList( u"ServiceManager/GrammarCheckerList" );
+    static const OUStringLiteral aHyphenatorList( u"ServiceManager/HyphenatorList" );
+    static const OUStringLiteral aThesaurusList( u"ServiceManager/ThesaurusList" );
+
+    const uno::Sequence< OUString > aSpellCheckerListEntries( GetNodeNames( aSpellCheckerList ) );
+    const uno::Sequence< OUString > aGrammarCheckerListEntries( GetNodeNames( aGrammarCheckerList ) );
+    const uno::Sequence< OUString > aHyphenatorListEntries( GetNodeNames( aHyphenatorList ) );
+    const uno::Sequence< OUString > aThesaurusListEntries( GetNodeNames( aThesaurusList ) );
+
+    uno::Sequence< uno::Any > aValues;
+    uno::Sequence< OUString > aNames( 1 );
+    OUString *pNames = aNames.getArray();
+
+    for (const OUString& rName : rPropertyNames)
+    {
+        // property names look like
+        // "ServiceManager/ThesaurusList/de-CH"
+
+        sal_Int32 nKeyStart;
+        nKeyStart = rName.lastIndexOf( '/' );
+        OUString aKeyText;
+        if (nKeyStart != -1)
+            aKeyText = rName.copy( nKeyStart + 1 );
+        SAL_WARN_IF( aKeyText.isEmpty(), "linguistic", "unexpected key (lang::Locale) string" );
+        if (rName.startsWith( aSpellCheckerList ))
+        {
+            osl::MutexGuard aGuard(GetLinguMutex());
+
+            // delete old cached data, needs to be acquired new on demand
+            pAvailSpellSvcs.reset();
+
+            if (lcl_SeqHasString( aSpellCheckerListEntries, aKeyText ))
+            {
+                pNames[0] = aSpellCheckerList + "/" + aKeyText;
+                aValues = /*aCfg.*/GetProperties( aNames );
+                uno::Sequence< OUString > aSvcImplNames;
+                if (aValues.hasElements())
+                    aSvcImplNames = GetLangSvcList( aValues.getConstArray()[0] );
+
+                LanguageType nLang = LANGUAGE_NONE;
+                if (!aKeyText.isEmpty())
+                    nLang = LanguageTag::convertToLanguageType( aKeyText );
+
+                GetSpellCheckerDsp_Impl( false );     // don't set service list, it will be done below
+                mxSpellDsp->SetServiceList( LanguageTag::convertToLocale(nLang), aSvcImplNames );
+            }
+        }
+        else if (rName.startsWith( aGrammarCheckerList ))
+        {
+            osl::MutexGuard aGuard(GetLinguMutex());
+
+            // delete old cached data, needs to be acquired new on demand
+            pAvailGrammarSvcs.reset();
+
+            if (lcl_SeqHasString( aGrammarCheckerListEntries, aKeyText ))
+            {
+                pNames[0] = aGrammarCheckerList + "/" + aKeyText;
+                aValues = /*aCfg.*/GetProperties( aNames );
+                uno::Sequence< OUString > aSvcImplNames;
+                if (aValues.hasElements())
+                    aSvcImplNames = GetLangSvc( aValues.getConstArray()[0] );
+
+                LanguageType nLang = LANGUAGE_NONE;
+                if (!aKeyText.isEmpty())
+                    nLang = LanguageTag::convertToLanguageType( aKeyText );
+
+                if (SvtLinguConfig().HasGrammarChecker())
+                {
+                    GetGrammarCheckerDsp_Impl( false );   // don't set service list, it will be done below
+                    mxGrammarDsp->SetServiceList( LanguageTag::convertToLocale(nLang), aSvcImplNames );
+                }
+            }
+        }
+        else if (rName.startsWith( aHyphenatorList ))
+        {
+            osl::MutexGuard aGuard(GetLinguMutex());
+
+            // delete old cached data, needs to be acquired new on demand
+            pAvailHyphSvcs.reset();
+
+            if (lcl_SeqHasString( aHyphenatorListEntries, aKeyText ))
+            {
+                pNames[0] = aHyphenatorList + "/" + aKeyText;
+                aValues = /*aCfg.*/GetProperties( aNames );
+                uno::Sequence< OUString > aSvcImplNames;
+                if (aValues.hasElements())
+                    aSvcImplNames = GetLangSvc( aValues.getConstArray()[0] );
+
+                LanguageType nLang = LANGUAGE_NONE;
+                if (!aKeyText.isEmpty())
+                    nLang = LanguageTag::convertToLanguageType( aKeyText );
+
+                GetHyphenatorDsp_Impl( false );   // don't set service list, it will be done below
+                mxHyphDsp->SetServiceList( LanguageTag::convertToLocale(nLang), aSvcImplNames );
+            }
+        }
+        else if (rName.startsWith( aThesaurusList ))
+        {
+            osl::MutexGuard aGuard(GetLinguMutex());
+
+            // delete old cached data, needs to be acquired new on demand
+            pAvailThesSvcs.reset();
+
+            if (lcl_SeqHasString( aThesaurusListEntries, aKeyText ))
+            {
+                pNames[0] = aThesaurusList + "/" + aKeyText;
+                aValues = /*aCfg.*/GetProperties( aNames );
+                uno::Sequence< OUString > aSvcImplNames;
+                if (aValues.hasElements())
+                    aSvcImplNames = GetLangSvcList( aValues.getConstArray()[0] );
+
+                LanguageType nLang = LANGUAGE_NONE;
+                if (!aKeyText.isEmpty())
+                    nLang = LanguageTag::convertToLanguageType( aKeyText );
+
+                GetThesaurusDsp_Impl( false );  // don't set service list, it will be done below
+                mxThesDsp->SetServiceList( LanguageTag::convertToLocale(nLang), aSvcImplNames );
+            }
+        }
+        else
+        {
+            SAL_WARN( "linguistic", "notified for unexpected property" );
+        }
+    }
+}
+
+
+void LngSvcMgr::ImplCommit()
+{
+    // everything necessary should have already been done by 'SaveCfgSvcs'
+    // called from within 'setConfiguredServices'.
+    // Also this class usually exits only when the Office is being shutdown.
+}
+
+
+void LngSvcMgr::GetListenerHelper_Impl()
+{
+    if (!mxListenerHelper.is())
+    {
+        mxListenerHelper = new LngSvcMgrListenerHelper( *this, linguistic::GetDictionaryList() );
+    }
+}
+
+
+void LngSvcMgr::GetSpellCheckerDsp_Impl( bool bSetSvcList )
+{
+    if (!mxSpellDsp.is())
+    {
+        mxSpellDsp = new SpellCheckerDispatcher( *this );
+        if (bSetSvcList)
+            SetCfgServiceLists( *mxSpellDsp );
+    }
+}
+
+
+void LngSvcMgr::GetGrammarCheckerDsp_Impl( bool bSetSvcList  )
+{
+    if (mxGrammarDsp.is() || !SvtLinguConfig().HasGrammarChecker())
+        return;
+
+    //! since the grammar checking iterator needs to be a one instance service
+    //! we need to create it the correct way!
+    uno::Reference< linguistic2::XProofreadingIterator > xGCI;
+    try
+    {
+        xGCI = linguistic2::ProofreadingIterator::create( comphelper::getProcessComponentContext() );
+    }
+    catch (const uno::Exception &)
+    {
+    }
+    SAL_WARN_IF( !xGCI.is(), "linguistic", "instantiating grammar checking iterator failed" );
+
+    if (xGCI.is())
+    {
+        mxGrammarDsp = dynamic_cast< GrammarCheckingIterator * >(xGCI.get());
+        SAL_WARN_IF( mxGrammarDsp == nullptr, "linguistic", "failed to get implementation" );
+        if (bSetSvcList && mxGrammarDsp.is())
+            SetCfgServiceLists( *mxGrammarDsp );
+    }
+}
+
+
+void LngSvcMgr::GetHyphenatorDsp_Impl( bool bSetSvcList  )
+{
+    if (!mxHyphDsp.is())
+    {
+        mxHyphDsp = new HyphenatorDispatcher( *this );
+        if (bSetSvcList)
+            SetCfgServiceLists( *mxHyphDsp );
+    }
+}
+
+
+void LngSvcMgr::GetThesaurusDsp_Impl( bool bSetSvcList  )
+{
+    if (!mxThesDsp.is())
+    {
+        mxThesDsp = new ThesaurusDispatcher;
+        if (bSetSvcList)
+            SetCfgServiceLists( *mxThesDsp );
+    }
+}
+
+
+void LngSvcMgr::GetAvailableSpellSvcs_Impl()
+{
+    if (pAvailSpellSvcs)
+        return;
+
+    pAvailSpellSvcs.emplace();
+
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    uno::Reference< container::XContentEnumerationAccess > xEnumAccess( xContext->getServiceManager(), uno::UNO_QUERY );
+    uno::Reference< container::XEnumeration > xEnum;
+    if (xEnumAccess.is())
+        xEnum = xEnumAccess->createContentEnumeration( SN_SPELLCHECKER );
+
+    if (!xEnum.is())
+        return;
+
+    while (xEnum->hasMoreElements())
+    {
+        uno::Any aCurrent = xEnum->nextElement();
+        uno::Reference< lang::XSingleComponentFactory > xCompFactory;
+        uno::Reference< lang::XSingleServiceFactory > xFactory;
+
+        xCompFactory.set(aCurrent, css::uno::UNO_QUERY);
+        if (!xCompFactory.is())
+        {
+            xFactory.set(aCurrent, css::uno::UNO_QUERY);
+        }
+        if ( xCompFactory.is() || xFactory.is() )
+        {
+            try
+            {
+                uno::Reference< linguistic2::XSpellChecker > xSvc( ( xCompFactory.is() ? xCompFactory->createInstanceWithContext( xContext ) : xFactory->createInstance() ), uno::UNO_QUERY_THROW );
+
+                OUString            aImplName;
+                std::vector< LanguageType >   aLanguages;
+                uno::Reference< XServiceInfo > xInfo( xSvc, uno::UNO_QUERY );
+                if (xInfo.is())
+                    aImplName = xInfo->getImplementationName();
+                SAL_WARN_IF( aImplName.isEmpty(), "linguistic", "empty implementation name" );
+                uno::Sequence<lang::Locale> aLocaleSequence(xSvc->getLocales());
+                aLanguages = LocaleSeqToLangVec( aLocaleSequence );
+
+                pAvailSpellSvcs->push_back( SvcInfo( aImplName, std::move(aLanguages) ) );
+            }
+            catch (const uno::Exception &)
+            {
+                SAL_WARN( "linguistic", "createInstance failed" );
+            }
+        }
+    }
+}
+
+
+void LngSvcMgr::GetAvailableGrammarSvcs_Impl()
+{
+    if (pAvailGrammarSvcs)
+        return;
+
+    pAvailGrammarSvcs.emplace();
+
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    uno::Reference< container::XContentEnumerationAccess > xEnumAccess( xContext->getServiceManager(), uno::UNO_QUERY );
+    uno::Reference< container::XEnumeration > xEnum;
+    if (xEnumAccess.is())
+        xEnum = xEnumAccess->createContentEnumeration( SN_GRAMMARCHECKER );
+
+    if (!xEnum.is())
+        return;
+
+    while (xEnum->hasMoreElements())
+    {
+        uno::Any aCurrent = xEnum->nextElement();
+        uno::Reference< lang::XSingleComponentFactory > xCompFactory;
+        uno::Reference< lang::XSingleServiceFactory > xFactory;
+
+        xCompFactory.set(aCurrent, css::uno::UNO_QUERY);
+        if (!xCompFactory.is())
+        {
+            xFactory.set(aCurrent, css::uno::UNO_QUERY);
+        }
+        if ( xCompFactory.is() || xFactory.is() )
+        {
+            try
+            {
+                uno::Reference< linguistic2::XProofreader > xSvc(
+                    xCompFactory.is()
+                        ? xCompFactory->createInstanceWithContext(xContext)
+                        : xFactory->createInstance(),
+                    uno::UNO_QUERY_THROW);
+
+                OUString            aImplName;
+                std::vector< LanguageType >    aLanguages;
+                uno::Reference< XServiceInfo > xInfo( xSvc, uno::UNO_QUERY );
+                if (xInfo.is())
+                    aImplName = xInfo->getImplementationName();
+                SAL_WARN_IF( aImplName.isEmpty(), "linguistic", "empty implementation name" );
+                uno::Sequence<lang::Locale> aLocaleSequence(xSvc->getLocales());
+                aLanguages = LocaleSeqToLangVec( aLocaleSequence );
+
+                pAvailGrammarSvcs->push_back( SvcInfo( aImplName, std::move(aLanguages) ) );
+            }
+            catch (const uno::Exception &)
+            {
+                SAL_WARN( "linguistic", "createInstance failed" );
+            }
+        }
+
+    }
+}
+
+
+void LngSvcMgr::GetAvailableHyphSvcs_Impl()
+{
+    if (pAvailHyphSvcs)
+        return;
+
+    pAvailHyphSvcs.emplace();
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    uno::Reference< container::XContentEnumerationAccess > xEnumAccess( xContext->getServiceManager(), uno::UNO_QUERY );
+    uno::Reference< container::XEnumeration > xEnum;
+    if (xEnumAccess.is())
+        xEnum = xEnumAccess->createContentEnumeration( SN_HYPHENATOR );
+
+    if (!xEnum.is())
+        return;
+
+    while (xEnum->hasMoreElements())
+    {
+        uno::Any aCurrent = xEnum->nextElement();
+        uno::Reference< lang::XSingleComponentFactory > xCompFactory;
+        uno::Reference< lang::XSingleServiceFactory > xFactory;
+
+        xCompFactory.set(aCurrent, css::uno::UNO_QUERY);
+        if (!xCompFactory.is())
+        {
+            xFactory.set(aCurrent, css::uno::UNO_QUERY);
+        }
+        if ( xCompFactory.is() || xFactory.is() )
+        {
+            try
+            {
+                uno::Reference< linguistic2::XHyphenator > xSvc( ( xCompFactory.is() ? xCompFactory->createInstanceWithContext( xContext ) : xFactory->createInstance() ), uno::UNO_QUERY_THROW );
+                OUString            aImplName;
+                std::vector< LanguageType >    aLanguages;
+                uno::Reference< XServiceInfo > xInfo( xSvc, uno::UNO_QUERY );
+                if (xInfo.is())
+                    aImplName = xInfo->getImplementationName();
+                SAL_WARN_IF( aImplName.isEmpty(), "linguistic", "empty implementation name" );
+                uno::Sequence<lang::Locale> aLocaleSequence(xSvc->getLocales());
+                aLanguages = LocaleSeqToLangVec( aLocaleSequence );
+                pAvailHyphSvcs->push_back( SvcInfo( aImplName, std::move(aLanguages) ) );
+            }
+            catch (const uno::Exception &)
+            {
+                SAL_WARN( "linguistic", "createInstance failed" );
+            }
+        }
+    }
+}
+
+
+void LngSvcMgr::GetAvailableThesSvcs_Impl()
+{
+    if (pAvailThesSvcs)
+        return;
+
+    pAvailThesSvcs.emplace();
+
+    uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    uno::Reference< container::XContentEnumerationAccess > xEnumAccess( xContext->getServiceManager(), uno::UNO_QUERY );
+    uno::Reference< container::XEnumeration > xEnum;
+    if (xEnumAccess.is())
+        xEnum = xEnumAccess->createContentEnumeration( SN_THESAURUS );
+
+    if (!xEnum.is())
+        return;
+
+    while (xEnum->hasMoreElements())
+    {
+        uno::Any aCurrent = xEnum->nextElement();
+        uno::Reference< lang::XSingleComponentFactory > xCompFactory;
+        uno::Reference< lang::XSingleServiceFactory > xFactory;
+
+        xCompFactory.set(aCurrent, css::uno::UNO_QUERY);
+        if (!xCompFactory.is())
+        {
+            xFactory.set(aCurrent, css::uno::UNO_QUERY);
+        }
+        if ( xCompFactory.is() || xFactory.is() )
+        {
+            try
+            {
+                uno::Reference< linguistic2::XThesaurus > xSvc( ( xCompFactory.is() ? xCompFactory->createInstanceWithContext( xContext ) : xFactory->createInstance() ), uno::UNO_QUERY_THROW );
+
+                OUString            aImplName;
+                std::vector< LanguageType >    aLanguages;
+                uno::Reference< XServiceInfo > xInfo( xSvc, uno::UNO_QUERY );
+                if (xInfo.is())
+                    aImplName = xInfo->getImplementationName();
+                SAL_WARN_IF( aImplName.isEmpty(), "linguistic", "empty implementation name" );
+                uno::Sequence<lang::Locale> aLocaleSequence(xSvc->getLocales());
+                aLanguages = LocaleSeqToLangVec( aLocaleSequence );
+
+                pAvailThesSvcs->push_back( SvcInfo( aImplName, std::move(aLanguages) ) );
+            }
+            catch (const uno::Exception &)
+            {
+               SAL_WARN( "linguistic", "createInstance failed" );
+            }
+        }
+    }
+}
+
+
+void LngSvcMgr::SetCfgServiceLists( SpellCheckerDispatcher &rSpellDsp )
+{
+    SAL_INFO( "linguistic", "linguistic: LngSvcMgr::SetCfgServiceLists - Spell" );
+
+    OUString aNode("ServiceManager/SpellCheckerList");
+    uno::Sequence< OUString > aNames( /*aCfg.*/GetNodeNames( aNode ) );
+
+    // append path prefix need for 'GetProperties' call below
+    OUString aPrefix = aNode + "/";
+    for (OUString & name : asNonConstRange(aNames))
+    {
+        name = aPrefix + name;
+    }
+
+    const uno::Sequence< uno::Any > aValues( /*aCfg.*/GetProperties( aNames ) );
+    if (!(aNames.hasElements()  &&  aNames.getLength() == aValues.getLength()))
+        return;
+
+    const OUString *pNames = aNames.getConstArray();
+    for (const uno::Any& rValue : aValues)
+    {
+        uno::Sequence< OUString > aSvcImplNames;
+        if (rValue >>= aSvcImplNames)
+        {
+            OUString aLocaleStr( *pNames++ );
+            sal_Int32 nSeparatorPos = aLocaleStr.lastIndexOf( '/' );
+            aLocaleStr = aLocaleStr.copy( nSeparatorPos + 1 );
+            rSpellDsp.SetServiceList( LanguageTag::convertToLocale(aLocaleStr), aSvcImplNames );
+        }
+    }
+}
+
+
+void LngSvcMgr::SetCfgServiceLists( GrammarCheckingIterator &rGrammarDsp )
+{
+    SAL_INFO( "linguistic", "linguistic: LngSvcMgr::SetCfgServiceLists - Grammar" );
+
+    OUString aNode("ServiceManager/GrammarCheckerList");
+    uno::Sequence< OUString > aNames( /*aCfg.*/GetNodeNames( aNode ) );
+
+    // append path prefix need for 'GetProperties' call below
+    OUString aPrefix = aNode  + "/";
+    for (OUString & name : asNonConstRange(aNames))
+    {
+        name = aPrefix + name;
+    }
+
+    const uno::Sequence< uno::Any > aValues( /*aCfg.*/GetProperties( aNames ) );
+    if (!(aNames.hasElements()  &&  aNames.getLength() == aValues.getLength()))
+        return;
+
+    const OUString *pNames = aNames.getConstArray();
+    for (const uno::Any& rValue : aValues)
+    {
+        uno::Sequence< OUString > aSvcImplNames;
+        if (rValue >>= aSvcImplNames)
+        {
+            // there should only be one grammar checker in use per language...
+            if (aSvcImplNames.getLength() > 1)
+                aSvcImplNames.realloc(1);
+
+            OUString aLocaleStr( *pNames++ );
+            sal_Int32 nSeparatorPos = aLocaleStr.lastIndexOf( '/' );
+            aLocaleStr = aLocaleStr.copy( nSeparatorPos + 1 );
+            rGrammarDsp.SetServiceList( LanguageTag::convertToLocale(aLocaleStr), aSvcImplNames );
+        }
+    }
+}
+
+
+void LngSvcMgr::SetCfgServiceLists( HyphenatorDispatcher &rHyphDsp )
+{
+    SAL_INFO( "linguistic", "linguistic: LngSvcMgr::SetCfgServiceLists - Hyph" );
+
+    OUString aNode("ServiceManager/HyphenatorList");
+    uno::Sequence< OUString > aNames( /*aCfg.*/GetNodeNames( aNode ) );
+
+    // append path prefix need for 'GetProperties' call below
+    OUString aPrefix = aNode + "/";
+    for (OUString & name : asNonConstRange(aNames))
+    {
+        name = aPrefix + name;
+    }
+
+    const uno::Sequence< uno::Any > aValues( /*aCfg.*/GetProperties( aNames ) );
+    if (!(aNames.hasElements()  &&  aNames.getLength() == aValues.getLength()))
+        return;
+
+    const OUString *pNames = aNames.getConstArray();
+    for (const uno::Any& rValue : aValues)
+    {
+        uno::Sequence< OUString > aSvcImplNames;
+        if (rValue >>= aSvcImplNames)
+        {
+            // there should only be one hyphenator in use per language...
+            if (aSvcImplNames.getLength() > 1)
+                aSvcImplNames.realloc(1);
+
+            OUString aLocaleStr( *pNames++ );
+            sal_Int32 nSeparatorPos = aLocaleStr.lastIndexOf( '/' );
+            aLocaleStr = aLocaleStr.copy( nSeparatorPos + 1 );
+            rHyphDsp.SetServiceList( LanguageTag::convertToLocale(aLocaleStr), aSvcImplNames );
+        }
+    }
+}
+
+
+void LngSvcMgr::SetCfgServiceLists( ThesaurusDispatcher &rThesDsp )
+{
+    SAL_INFO( "linguistic", "linguistic: LngSvcMgr::SetCfgServiceLists - Thes" );
+
+    OUString aNode("ServiceManager/ThesaurusList");
+    uno::Sequence< OUString > aNames( /*aCfg.*/GetNodeNames( aNode ) );
+
+    // append path prefix need for 'GetProperties' call below
+    OUString aPrefix = aNode + "/";
+    for (OUString & name : asNonConstRange(aNames))
+    {
+        name = aPrefix + name;
+    }
+
+    const uno::Sequence< uno::Any > aValues( /*aCfg.*/GetProperties( aNames ) );
+    if (!(aNames.hasElements()  &&  aNames.getLength() == aValues.getLength()))
+        return;
+
+    const OUString *pNames = aNames.getConstArray();
+    for (const uno::Any& rValue : aValues)
+    {
+        uno::Sequence< OUString > aSvcImplNames;
+        if (rValue >>= aSvcImplNames)
+        {
+            OUString aLocaleStr( *pNames++ );
+            sal_Int32 nSeparatorPos = aLocaleStr.lastIndexOf( '/' );
+            aLocaleStr = aLocaleStr.copy( nSeparatorPos + 1 );
+            rThesDsp.SetServiceList( LanguageTag::convertToLocale(aLocaleStr), aSvcImplNames );
+        }
+    }
+}
+
+
+uno::Reference< linguistic2::XSpellChecker > SAL_CALL
+    LngSvcMgr::getSpellChecker()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+#if OSL_DEBUG_LEVEL > 0
+    getAvailableLocales(SN_SPELLCHECKER);
+#endif
+
+    uno::Reference< linguistic2::XSpellChecker > xRes;
+    if (!bDisposing)
+    {
+        if (!mxSpellDsp.is())
+            GetSpellCheckerDsp_Impl();
+        xRes = mxSpellDsp.get();
+    }
+    return xRes;
+}
+
+
+uno::Reference< linguistic2::XHyphenator > SAL_CALL
+    LngSvcMgr::getHyphenator()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+#if OSL_DEBUG_LEVEL > 0
+    getAvailableLocales(SN_HYPHENATOR);
+#endif
+    uno::Reference< linguistic2::XHyphenator >   xRes;
+    if (!bDisposing)
+    {
+        if (!mxHyphDsp.is())
+            GetHyphenatorDsp_Impl();
+        xRes = mxHyphDsp.get();
+    }
+    return xRes;
+}
+
+
+uno::Reference< linguistic2::XThesaurus > SAL_CALL
+    LngSvcMgr::getThesaurus()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+#if OSL_DEBUG_LEVEL > 0
+    getAvailableLocales(SN_THESAURUS);
+#endif
+    uno::Reference< linguistic2::XThesaurus >    xRes;
+    if (!bDisposing)
+    {
+        if (!mxThesDsp.is())
+            GetThesaurusDsp_Impl();
+        xRes = mxThesDsp.get();
+    }
+    return xRes;
+}
+
+
+sal_Bool SAL_CALL
+    LngSvcMgr::addLinguServiceManagerListener(
+            const uno::Reference< lang::XEventListener >& xListener )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (bDisposing || !xListener.is())
+        return false;
+
+    if (!mxListenerHelper.is())
+        GetListenerHelper_Impl();
+    mxListenerHelper->AddLngSvcMgrListener( xListener );
+    return true;
+}
+
+
+sal_Bool SAL_CALL
+    LngSvcMgr::removeLinguServiceManagerListener(
+            const uno::Reference< lang::XEventListener >& xListener )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (bDisposing || !xListener.is())
+        return false;
+
+    DBG_ASSERT( mxListenerHelper.is(), "listener removed without being added" );
+    if (!mxListenerHelper.is())
+        GetListenerHelper_Impl();
+    mxListenerHelper->RemoveLngSvcMgrListener( xListener );
+    return true;
+}
+
+
+uno::Sequence< OUString > SAL_CALL
+    LngSvcMgr::getAvailableServices(
+            const OUString& rServiceName,
+            const lang::Locale& rLocale )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    uno::Sequence< OUString > aRes;
+    const SvcInfoArray *pInfoArray = nullptr;
+
+    if (rServiceName == SN_SPELLCHECKER)
+    {
+        GetAvailableSpellSvcs_Impl();
+        pInfoArray = &*pAvailSpellSvcs;
+    }
+    else if (rServiceName == SN_GRAMMARCHECKER)
+    {
+        GetAvailableGrammarSvcs_Impl();
+        pInfoArray = &*pAvailGrammarSvcs;
+    }
+    else if (rServiceName == SN_HYPHENATOR)
+    {
+        GetAvailableHyphSvcs_Impl();
+        pInfoArray = &*pAvailHyphSvcs;
+    }
+    else if (rServiceName == SN_THESAURUS)
+    {
+        GetAvailableThesSvcs_Impl();
+        pInfoArray = &*pAvailThesSvcs;
+    }
+
+    if (pInfoArray)
+    {
+        std::vector<OUString> aVec;
+        aVec.reserve(pInfoArray->size());
+
+        LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+        for (const auto& rInfo : *pInfoArray)
+        {
+            if (LinguIsUnspecified( nLanguage )
+                || rInfo.HasLanguage( nLanguage ))
+            {
+                aVec.push_back(rInfo.aSvcImplName);
+            }
+        }
+
+        aRes = comphelper::containerToSequence(aVec);
+    }
+
+    return aRes;
+}
+
+
+uno::Sequence< lang::Locale > SAL_CALL
+    LngSvcMgr::getAvailableLocales(
+            const OUString& rServiceName )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    uno::Sequence< lang::Locale > aRes;
+
+    uno::Sequence< lang::Locale >  *pAvailLocales     = nullptr;
+    if (rServiceName == SN_SPELLCHECKER)
+        pAvailLocales       = &aAvailSpellLocales;
+    else if (rServiceName == SN_GRAMMARCHECKER)
+        pAvailLocales       = &aAvailGrammarLocales;
+    else if (rServiceName == SN_HYPHENATOR)
+        pAvailLocales       = &aAvailHyphLocales;
+    else if (rServiceName == SN_THESAURUS)
+        pAvailLocales       = &aAvailThesLocales;
+
+    // Nowadays (with OOo lingu in SO) we want to know immediately about
+    // new downloaded dictionaries and have them ready right away if the Tools/Options...
+    // is used to activate them. Thus we can not rely anymore on buffered data.
+    if (pAvailLocales)
+    {
+        *pAvailLocales = GetAvailLocales(getAvailableServices(rServiceName, lang::Locale()));
+        aRes = *pAvailLocales;
+    }
+
+    return aRes;
+}
+
+static bool IsEqSvcList( const uno::Sequence< OUString > &rList1,
+                         const uno::Sequence< OUString > &rList2 )
+{
+    // returns true if both sequences are equal
+    return rList1.getLength() == rList2.getLength()
+        && std::equal(rList1.begin(), rList1.end(), rList2.begin(), rList2.end());
+}
+
+
+void SAL_CALL
+    LngSvcMgr::setConfiguredServices(
+            const OUString& rServiceName,
+            const lang::Locale& rLocale,
+            const uno::Sequence< OUString >& rServiceImplNames )
+{
+    SAL_INFO( "linguistic", "linguistic: LngSvcMgr::setConfiguredServices" );
+
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    if (LinguIsUnspecified( nLanguage))
+        return;
+
+    if (rServiceName == SN_SPELLCHECKER)
+    {
+        if (!mxSpellDsp.is())
+            GetSpellCheckerDsp_Impl();
+        bool bChanged = !IsEqSvcList( rServiceImplNames,
+                                      mxSpellDsp->GetServiceList( rLocale ) );
+        if (bChanged)
+        {
+            mxSpellDsp->SetServiceList( rLocale, rServiceImplNames );
+            SaveCfgSvcs( SN_SPELLCHECKER );
+
+            if (mxListenerHelper)
+                mxListenerHelper->AddLngSvcEvt(
+                        linguistic2::LinguServiceEventFlags::SPELL_CORRECT_WORDS_AGAIN |
+                        linguistic2::LinguServiceEventFlags::SPELL_WRONG_WORDS_AGAIN );
+        }
+    }
+    else if (rServiceName == SN_GRAMMARCHECKER)
+    {
+        if (!mxGrammarDsp.is())
+            GetGrammarCheckerDsp_Impl();
+        bool bChanged = !IsEqSvcList( rServiceImplNames,
+                                      mxGrammarDsp->GetServiceList( rLocale ) );
+        if (bChanged)
+        {
+            mxGrammarDsp->SetServiceList( rLocale, rServiceImplNames );
+            SaveCfgSvcs( SN_GRAMMARCHECKER );
+
+            if (mxListenerHelper)
+                mxListenerHelper->AddLngSvcEvt(
+                        linguistic2::LinguServiceEventFlags::PROOFREAD_AGAIN );
+        }
+    }
+    else if (rServiceName == SN_HYPHENATOR)
+    {
+        if (!mxHyphDsp.is())
+            GetHyphenatorDsp_Impl();
+        bool bChanged = !IsEqSvcList( rServiceImplNames,
+                                      mxHyphDsp->GetServiceList( rLocale ) );
+        if (bChanged)
+        {
+            mxHyphDsp->SetServiceList( rLocale, rServiceImplNames );
+            SaveCfgSvcs( SN_HYPHENATOR );
+
+            if (mxListenerHelper)
+                mxListenerHelper->AddLngSvcEvt(
+                        linguistic2::LinguServiceEventFlags::HYPHENATE_AGAIN );
+        }
+    }
+    else if (rServiceName == SN_THESAURUS)
+    {
+        if (!mxThesDsp.is())
+            GetThesaurusDsp_Impl();
+        bool bChanged = !IsEqSvcList( rServiceImplNames,
+                                      mxThesDsp->GetServiceList( rLocale ) );
+        if (bChanged)
+        {
+            mxThesDsp->SetServiceList( rLocale, rServiceImplNames );
+            SaveCfgSvcs( SN_THESAURUS );
+        }
+    }
+}
+
+
+bool LngSvcMgr::SaveCfgSvcs( std::u16string_view rServiceName )
+{
+    SAL_INFO( "linguistic", "linguistic: LngSvcMgr::SaveCfgSvcs" );
+
+    bool bRes = false;
+
+    LinguDispatcher *pDsp = nullptr;
+    uno::Sequence< lang::Locale > aLocales;
+
+    if (rServiceName == SN_SPELLCHECKER)
+    {
+        if (!mxSpellDsp)
+            GetSpellCheckerDsp_Impl();
+        pDsp = mxSpellDsp.get();
+        aLocales = getAvailableLocales( SN_SPELLCHECKER );
+    }
+    else if (rServiceName == SN_GRAMMARCHECKER)
+    {
+        if (!mxGrammarDsp.is())
+            GetGrammarCheckerDsp_Impl();
+        pDsp = mxGrammarDsp.get();
+        aLocales = getAvailableLocales( SN_GRAMMARCHECKER );
+    }
+    else if (rServiceName == SN_HYPHENATOR)
+    {
+        if (!mxHyphDsp.is())
+            GetHyphenatorDsp_Impl();
+        pDsp = mxHyphDsp.get();
+        aLocales = getAvailableLocales( SN_HYPHENATOR );
+    }
+    else if (rServiceName == SN_THESAURUS)
+    {
+        if (!mxThesDsp.is())
+            GetThesaurusDsp_Impl();
+        pDsp = mxThesDsp.get();
+        aLocales = getAvailableLocales( SN_THESAURUS );
+    }
+
+    if (pDsp  &&  aLocales.hasElements())
+    {
+        uno::Sequence< beans::PropertyValue > aValues( aLocales.getLength() );
+        beans::PropertyValue *pValue = aValues.getArray();
+
+        // get node name to be used
+        const char *pNodeName = nullptr;
+        if (pDsp == mxSpellDsp.get())
+            pNodeName = "ServiceManager/SpellCheckerList";
+        else if (pDsp == mxGrammarDsp.get())
+            pNodeName = "ServiceManager/GrammarCheckerList";
+        else if (pDsp == mxHyphDsp.get())
+            pNodeName = "ServiceManager/HyphenatorList";
+        else if (pDsp == mxThesDsp.get())
+            pNodeName = "ServiceManager/ThesaurusList";
+        else
+        {
+            SAL_WARN( "linguistic", "node name missing" );
+        }
+        OUString aNodeName( OUString::createFromAscii(pNodeName) );
+
+        for (const lang::Locale& rLocale : std::as_const(aLocales))
+        {
+            uno::Sequence< OUString > aSvcImplNames = pDsp->GetServiceList( rLocale );
+
+            // build value to be written back to configuration
+            uno::Any aCfgAny;
+            if ((pDsp == mxHyphDsp.get() || pDsp == mxGrammarDsp.get()) && aSvcImplNames.getLength() > 1)
+                aSvcImplNames.realloc(1);   // there should be only one entry for hyphenators or grammar checkers (because they are not chained)
+            aCfgAny <<= aSvcImplNames;
+            DBG_ASSERT( aCfgAny.hasValue(), "missing value for 'Any' type" );
+
+            OUString aCfgLocaleStr( LanguageTag::convertToBcp47( rLocale));
+            pValue->Value = aCfgAny;
+            pValue->Name  = aNodeName + "/" + aCfgLocaleStr;
+            pValue++;
+        }
+        {
+        SAL_INFO( "linguistic", "linguistic: LngSvcMgr::SaveCfgSvcs - ReplaceSetProperties" );
+        // change, add new or replace existing entries.
+        bRes |= /*aCfg.*/ReplaceSetProperties( aNodeName, aValues );
+        }
+    }
+
+    return bRes;
+}
+
+
+static uno::Sequence< OUString > GetLangSvcList( const uno::Any &rVal )
+{
+    uno::Sequence< OUString > aRes;
+
+    if (rVal.hasValue())
+    {
+        rVal >>= aRes;
+#if OSL_DEBUG_LEVEL > 0
+        for (const OUString& rSvcName : std::as_const(aRes))
+        {
+            SAL_WARN_IF( rSvcName.isEmpty(), "linguistic", "service impl-name missing" );
+        }
+#endif
+    }
+
+    return aRes;
+}
+
+
+static uno::Sequence< OUString > GetLangSvc( const uno::Any &rVal )
+{
+    uno::Sequence< OUString > aRes;
+    if (!rVal.hasValue())
+        return aRes;
+
+    // allowing for a sequence here as well (even though it should only
+    // be a string) makes coding easier in other places since one needs
+    // not make a special case for writing a string only and not a
+    // sequence of strings.
+    if (rVal >>= aRes)
+    {
+        // but only the first string should be used.
+        if (aRes.getLength() > 1)
+            aRes.realloc(1);
+    }
+    else
+    {
+        OUString aImplName;
+        if ((rVal >>= aImplName) && !aImplName.isEmpty())
+        {
+            aRes.realloc(1);
+            aRes.getArray()[0] = aImplName;
+        }
+        else
+        {
+            SAL_WARN( "linguistic", "GetLangSvc: unexpected type encountered" );
+        }
+    }
+
+    return aRes;
+}
+
+
+uno::Sequence< OUString > SAL_CALL
+    LngSvcMgr::getConfiguredServices(
+            const OUString& rServiceName,
+            const lang::Locale& rLocale )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    uno::Sequence< OUString > aSvcImplNames;
+
+    OUString aCfgLocale( LanguageTag::convertToBcp47( rLocale) );
+
+    uno::Sequence< uno::Any > aValues;
+    uno::Sequence< OUString > aNames( 1 );
+    OUString *pNames = aNames.getArray();
+    if ( rServiceName == SN_SPELLCHECKER )
+    {
+        OUString aNode( "ServiceManager/SpellCheckerList");
+        const uno::Sequence< OUString > aNodeEntries( GetNodeNames( aNode ) );
+        if (lcl_SeqHasString( aNodeEntries, aCfgLocale ))
+        {
+            pNames[0] = aNode + "/" + aCfgLocale;
+            aValues = /*aCfg.*/GetProperties( aNames );
+            if (aValues.hasElements())
+                aSvcImplNames = GetLangSvcList( aValues.getConstArray()[0] );
+        }
+    }
+    else if ( rServiceName == SN_GRAMMARCHECKER )
+    {
+        OUString aNode( "ServiceManager/GrammarCheckerList");
+        const uno::Sequence< OUString > aNodeEntries( GetNodeNames( aNode ) );
+        if (lcl_SeqHasString( aNodeEntries, aCfgLocale ))
+        {
+            pNames[0] = aNode + "/" + aCfgLocale;
+            aValues = /*aCfg.*/GetProperties( aNames );
+            if (aValues.hasElements())
+                aSvcImplNames = GetLangSvc( aValues.getConstArray()[0] );
+        }
+    }
+    else if ( rServiceName == SN_HYPHENATOR )
+    {
+        OUString aNode( "ServiceManager/HyphenatorList");
+        const uno::Sequence< OUString > aNodeEntries( GetNodeNames( aNode ) );
+        if (lcl_SeqHasString( aNodeEntries, aCfgLocale ))
+        {
+            pNames[0] = aNode + "/" + aCfgLocale;
+            aValues = /*aCfg.*/GetProperties( aNames );
+            if (aValues.hasElements())
+                aSvcImplNames = GetLangSvc( aValues.getConstArray()[0] );
+        }
+    }
+    else if ( rServiceName == SN_THESAURUS )
+    {
+        OUString aNode( "ServiceManager/ThesaurusList");
+        const uno::Sequence< OUString > aNodeEntries( GetNodeNames( aNode ) );
+        if (lcl_SeqHasString( aNodeEntries, aCfgLocale ))
+        {
+            pNames[0] = aNode + "/" + aCfgLocale;
+            aValues = /*aCfg.*/GetProperties( aNames );
+            if (aValues.hasElements())
+                aSvcImplNames = GetLangSvcList( aValues.getConstArray()[0] );
+        }
+    }
+
+    return aSvcImplNames;
+}
+
+
+void SAL_CALL
+    LngSvcMgr::dispose()
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (!bDisposing)
+    {
+        bDisposing = true;
+
+        // require listeners to release this object
+        lang::EventObject aEvtObj( static_cast<XLinguServiceManager*>(this) );
+        aEvtListeners.disposeAndClear( aEvtObj );
+
+        if (mxListenerHelper.is())
+            mxListenerHelper->DisposeAndClear( aEvtObj );
+    }
+}
+
+
+void SAL_CALL
+    LngSvcMgr::addEventListener(
+            const uno::Reference< lang::XEventListener >& xListener )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (!bDisposing  &&  xListener.is())
+    {
+        aEvtListeners.addInterface( xListener );
+    }
+}
+
+
+void SAL_CALL
+    LngSvcMgr::removeEventListener(
+            const uno::Reference< lang::XEventListener >& xListener )
+{
+    osl::MutexGuard aGuard( GetLinguMutex() );
+
+    if (xListener.is())
+    {
+        aEvtListeners.removeInterface( xListener );
+    }
+}
+
+
+bool LngSvcMgr::AddLngSvcEvtBroadcaster(
+            const uno::Reference< linguistic2::XLinguServiceEventBroadcaster > &rxBroadcaster )
+{
+    if (!rxBroadcaster.is())
+        return false;
+    if (!mxListenerHelper.is())
+        GetListenerHelper_Impl();
+    mxListenerHelper->AddLngSvcEvtBroadcaster( rxBroadcaster );
+    return true;
+}
+
+
+OUString SAL_CALL
+    LngSvcMgr::getImplementationName()
+{
+    return "com.sun.star.lingu2.LngSvcMgr";
+}
+
+
+sal_Bool SAL_CALL
+    LngSvcMgr::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+
+uno::Sequence< OUString > SAL_CALL
+    LngSvcMgr::getSupportedServiceNames()
+{
+    return { "com.sun.star.linguistic2.LinguServiceManager" };
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+linguistic_LngSvcMgr_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new LngSvcMgr());
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/lngsvcmgr.hxx b/linguistic/source/lngsvcmgr.hxx
new file mode 100644
index 000000000..76cb7d182
--- /dev/null
+++ b/linguistic/source/lngsvcmgr.hxx
@@ -0,0 +1,167 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_LNGSVCMGR_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_LNGSVCMGR_HXX
+
+#include <cppuhelper/implbase.hxx>
+#include <comphelper/interfacecontainer3.hxx>
+
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/linguistic2/XLinguServiceManager2.hpp>
+#include <com/sun/star/util/XModifyBroadcaster.hpp>
+#include <com/sun/star/util/XModifyListener.hpp>
+#include <unotools/configitem.hxx>
+#include <rtl/ref.hxx>
+#include <vcl/timer.hxx>
+#include <vcl/idle.hxx>
+#include <vector>
+#include <optional>
+
+class SpellCheckerDispatcher;
+class HyphenatorDispatcher;
+class ThesaurusDispatcher;
+class GrammarCheckingIterator;
+class LngSvcMgrListenerHelper;
+struct SvcInfo;
+
+namespace com::sun::star::linguistic2 {
+    class XLinguServiceEventBroadcaster;
+    class XSpellChecker;
+    class XProofreadingIterator;
+    class XHyphenator;
+    class XThesaurus;
+}
+
+
+class LngSvcMgr :
+    public cppu::WeakImplHelper
+    <
+        css::linguistic2::XLinguServiceManager2,
+        css::lang::XServiceInfo,
+        css::util::XModifyListener
+    >,
+    private utl::ConfigItem
+{
+    friend class LngSvcMgrListenerHelper;
+
+    ::comphelper::OInterfaceContainerHelper3<css::lang::XEventListener>  aEvtListeners;
+
+    css::uno::Reference<
+        css::util::XModifyBroadcaster>                  xMB;
+
+    Idle                                                aUpdateIdle;
+
+
+    css::uno::Sequence<
+        css::lang::Locale >                             aAvailSpellLocales;
+    css::uno::Sequence<
+        css::lang::Locale >                             aAvailGrammarLocales;
+    css::uno::Sequence<
+        css::lang::Locale >                             aAvailHyphLocales;
+    css::uno::Sequence<
+        css::lang::Locale >                             aAvailThesLocales;
+
+    rtl::Reference<SpellCheckerDispatcher>              mxSpellDsp;
+    rtl::Reference<GrammarCheckingIterator>             mxGrammarDsp;
+    rtl::Reference<HyphenatorDispatcher>                mxHyphDsp;
+    rtl::Reference<ThesaurusDispatcher>                 mxThesDsp;
+
+    rtl::Reference<LngSvcMgrListenerHelper>             mxListenerHelper;
+
+    typedef std::vector< SvcInfo > SvcInfoArray;
+    std::optional<SvcInfoArray>                        pAvailSpellSvcs;
+    std::optional<SvcInfoArray>                        pAvailGrammarSvcs;
+    std::optional<SvcInfoArray>                        pAvailHyphSvcs;
+    std::optional<SvcInfoArray>                        pAvailThesSvcs;
+
+    bool bDisposing;
+
+    LngSvcMgr(const LngSvcMgr &) = delete;
+    LngSvcMgr & operator = (const LngSvcMgr &) = delete;
+
+    void    GetAvailableSpellSvcs_Impl();
+    void    GetAvailableGrammarSvcs_Impl();
+    void    GetAvailableHyphSvcs_Impl();
+    void    GetAvailableThesSvcs_Impl();
+    void    GetListenerHelper_Impl();
+
+    void    GetSpellCheckerDsp_Impl( bool bSetSvcList = true );
+    void    GetGrammarCheckerDsp_Impl( bool bSetSvcList = true );
+    void    GetHyphenatorDsp_Impl( bool bSetSvcList = true );
+    void    GetThesaurusDsp_Impl( bool bSetSvcList = true );
+
+    void    SetCfgServiceLists( SpellCheckerDispatcher &rSpellDsp );
+    void    SetCfgServiceLists( GrammarCheckingIterator &rGrammarDsp );
+    void    SetCfgServiceLists( HyphenatorDispatcher &rHyphDsp );
+    void    SetCfgServiceLists( ThesaurusDispatcher &rThesDsp );
+
+    bool    SaveCfgSvcs( std::u16string_view rServiceName );
+
+    // utl::ConfigItem (to allow for listening of changes of relevant properties)
+    virtual void    Notify( const css::uno::Sequence< OUString > &rPropertyNames ) override;
+    virtual void    ImplCommit() override;
+
+    void UpdateAll();
+    void stopListening();
+    DECL_LINK( updateAndBroadcast, Timer*, void );
+
+public:
+    LngSvcMgr();
+    virtual ~LngSvcMgr() override;
+
+    // XLinguServiceManager
+    virtual css::uno::Reference< css::linguistic2::XSpellChecker > SAL_CALL getSpellChecker(  ) override;
+    virtual css::uno::Reference< css::linguistic2::XHyphenator > SAL_CALL getHyphenator(  ) override;
+    virtual css::uno::Reference< css::linguistic2::XThesaurus > SAL_CALL getThesaurus(  ) override;
+    virtual sal_Bool SAL_CALL addLinguServiceManagerListener( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;
+    virtual sal_Bool SAL_CALL removeLinguServiceManagerListener( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getAvailableServices( const OUString& aServiceName, const css::lang::Locale& aLocale ) override;
+    virtual void SAL_CALL setConfiguredServices( const OUString& aServiceName, const css::lang::Locale& aLocale, const css::uno::Sequence< OUString >& aServiceImplNames ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getConfiguredServices( const OUString& aServiceName, const css::lang::Locale& aLocale ) override;
+
+    // XAvailableLocales
+    virtual css::uno::Sequence< css::lang::Locale > SAL_CALL getAvailableLocales( const OUString& aServiceName ) override;
+
+    // XComponent
+    virtual void SAL_CALL dispose(  ) override;
+    virtual void SAL_CALL addEventListener( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;
+    virtual void SAL_CALL removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener ) override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName(  ) override;
+    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) override;
+
+    // XEventListener
+    virtual void SAL_CALL disposing( const css::lang::EventObject& rSource ) override;
+
+    // XModifyListener
+    virtual void SAL_CALL modified( const css::lang::EventObject& rEvent ) override;
+
+    bool    AddLngSvcEvtBroadcaster(
+                const css::uno::Reference< css::linguistic2::XLinguServiceEventBroadcaster > &rxBroadcaster );
+};
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/misc.cxx b/linguistic/source/misc.cxx
new file mode 100644
index 000000000..de2bc9686
--- /dev/null
+++ b/linguistic/source/misc.cxx
@@ -0,0 +1,761 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file754
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <memory>
+#include <sal/log.hxx>
+#include <svl/lngmisc.hxx>
+#include <ucbhelper/content.hxx>
+#include <i18nlangtag/languagetag.hxx>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/beans/XFastPropertySet.hpp>
+#include <com/sun/star/beans/PropertyValues.hpp>
+#include <com/sun/star/frame/Desktop.hpp>
+#include <com/sun/star/frame/XStorable.hpp>
+#include <com/sun/star/linguistic2/DictionaryType.hpp>
+#include <com/sun/star/linguistic2/DictionaryList.hpp>
+#include <com/sun/star/linguistic2/LinguProperties.hpp>
+#include <com/sun/star/ucb/XCommandEnvironment.hpp>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/uno/Reference.h>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/sequence.hxx>
+#include <unotools/charclass.hxx>
+#include <unotools/linguprops.hxx>
+#include <unotools/localedatawrapper.hxx>
+#include <svtools/strings.hrc>
+#include <unotools/resmgr.hxx>
+
+#include <linguistic/misc.hxx>
+#include <linguistic/hyphdta.hxx>
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::i18n;
+using namespace com::sun::star::linguistic2;
+
+namespace linguistic
+{
+
+//!! multi-thread safe mutex for all platforms !!
+osl::Mutex & GetLinguMutex()
+{
+    static osl::Mutex SINGLETON;
+    return SINGLETON;
+}
+
+const LocaleDataWrapper & GetLocaleDataWrapper( LanguageType nLang )
+{
+    static std::unique_ptr<LocaleDataWrapper> xLclDtaWrp;
+    if (!xLclDtaWrp || xLclDtaWrp->getLoadedLanguageTag().getLanguageType() != nLang)
+        xLclDtaWrp.reset(new LocaleDataWrapper(LanguageTag( nLang )));
+    return *xLclDtaWrp;
+}
+
+LanguageType LinguLocaleToLanguage( const css::lang::Locale& rLocale )
+{
+    if ( rLocale.Language.isEmpty() )
+        return LANGUAGE_NONE;
+    return LanguageTag::convertToLanguageType( rLocale );
+}
+
+css::lang::Locale LinguLanguageToLocale( LanguageType nLanguage )
+{
+    if (nLanguage == LANGUAGE_NONE)
+        return css::lang::Locale();
+    return LanguageTag::convertToLocale( nLanguage);
+}
+
+bool LinguIsUnspecified( LanguageType nLanguage )
+{
+    return nLanguage.anyOf(
+         LANGUAGE_NONE,
+         LANGUAGE_UNDETERMINED,
+         LANGUAGE_MULTIPLE);
+}
+
+// When adding anything keep both LinguIsUnspecified() methods in sync!
+// For mappings between language code string and LanguageType see
+// i18nlangtag/source/isolang/isolang.cxx
+
+bool LinguIsUnspecified( std::u16string_view rBcp47 )
+{
+    if (rBcp47.size() != 3)
+        return false;
+    return rBcp47 == u"zxx" || rBcp47 == u"und" || rBcp47 == u"mul";
+}
+
+static sal_Int32 Minimum( sal_Int32 n1, sal_Int32 n2, sal_Int32 n3 )
+{
+    return std::min(std::min(n1, n2), n3);
+}
+
+namespace {
+
+class IntArray2D
+{
+private:
+    std::unique_ptr<sal_Int32[]>  pData;
+    int                           n1, n2;
+
+public:
+    IntArray2D( int nDim1, int nDim2 );
+
+    sal_Int32 & Value( int i, int k  );
+};
+
+}
+
+IntArray2D::IntArray2D( int nDim1, int nDim2 )
+{
+    n1 = nDim1;
+    n2 = nDim2;
+    pData.reset( new sal_Int32[n1 * n2] );
+}
+
+sal_Int32 & IntArray2D::Value( int i, int k  )
+{
+    assert( (0 <= i && i < n1) && "first index out of range" );
+    assert( (0 <= k && k < n2) && "second index out of range" );
+    assert( (i * n2 + k < n1 * n2) && "index out of range" );
+    return pData[ i * n2 + k ];
+}
+
+sal_Int32 LevDistance( std::u16string_view rTxt1, std::u16string_view rTxt2 )
+{
+    sal_Int32 nLen1 = rTxt1.size();
+    sal_Int32 nLen2 = rTxt2.size();
+
+    if (nLen1 == 0)
+        return nLen2;
+    if (nLen2 == 0)
+        return nLen1;
+
+    IntArray2D aData( nLen1 + 1, nLen2 + 1 );
+
+    sal_Int32 i, k;
+    for (i = 0;  i <= nLen1;  ++i)
+        aData.Value(i, 0) = i;
+    for (k = 0;  k <= nLen2;  ++k)
+        aData.Value(0, k) = k;
+    for (i = 1;  i <= nLen1;  ++i)
+    {
+        for (k = 1;  k <= nLen2;  ++k)
+        {
+            sal_Unicode c1i = rTxt1[i - 1];
+            sal_Unicode c2k = rTxt2[k - 1];
+            sal_Int32 nCost = c1i == c2k ? 0 : 1;
+            sal_Int32 nNew = Minimum( aData.Value(i-1, k  ) + 1,
+                                       aData.Value(i  , k-1) + 1,
+                                       aData.Value(i-1, k-1) + nCost );
+            // take transposition (exchange with left or right char) in account
+            if (2 < i && 2 < k)
+            {
+                int nT = aData.Value(i-2, k-2) + 1;
+                if (rTxt1[i - 2] != c1i)
+                    ++nT;
+                if (rTxt2[k - 2] != c2k)
+                    ++nT;
+                if (nT < nNew)
+                    nNew = nT;
+            }
+
+            aData.Value(i, k) = nNew;
+        }
+    }
+    sal_Int32 nDist = aData.Value(nLen1, nLen2);
+    return nDist;
+}
+
+bool IsUseDicList( const PropertyValues &rProperties,
+        const uno::Reference< XPropertySet > &rxProp )
+{
+    bool bRes = true;
+
+    const PropertyValue *pVal = std::find_if(rProperties.begin(), rProperties.end(),
+        [](const PropertyValue& rVal) { return UPH_IS_USE_DICTIONARY_LIST == rVal.Handle; });
+
+    if (pVal != rProperties.end())
+    {
+        pVal->Value >>= bRes;
+    }
+    else  // no temporary value found in 'rProperties'
+    {
+        uno::Reference< XFastPropertySet > xFast( rxProp, UNO_QUERY );
+        if (xFast.is())
+            xFast->getFastPropertyValue( UPH_IS_USE_DICTIONARY_LIST ) >>= bRes;
+    }
+
+    return bRes;
+}
+
+bool IsIgnoreControlChars( const PropertyValues &rProperties,
+        const uno::Reference< XPropertySet > &rxProp )
+{
+    bool bRes = true;
+
+    const PropertyValue *pVal = std::find_if(rProperties.begin(), rProperties.end(),
+        [](const PropertyValue& rVal) { return UPH_IS_IGNORE_CONTROL_CHARACTERS == rVal.Handle; });
+
+    if (pVal != rProperties.end())
+    {
+        pVal->Value >>= bRes;
+    }
+    else  // no temporary value found in 'rProperties'
+    {
+        uno::Reference< XFastPropertySet > xFast( rxProp, UNO_QUERY );
+        if (xFast.is())
+            xFast->getFastPropertyValue( UPH_IS_IGNORE_CONTROL_CHARACTERS ) >>= bRes;
+    }
+
+    return bRes;
+}
+
+static bool lcl_HasHyphInfo( const uno::Reference<XDictionaryEntry> &xEntry )
+{
+    bool bRes = false;
+    if (xEntry.is())
+    {
+        // there has to be (at least one) '=' or '[' denoting a hyphenation position
+        // and it must not be before any character of the word
+        sal_Int32 nIdx = xEntry->getDictionaryWord().indexOf( '=' );
+        if (nIdx == -1)
+            nIdx = xEntry->getDictionaryWord().indexOf( '[' );
+        bRes = nIdx != -1  &&  nIdx != 0;
+    }
+    return bRes;
+}
+
+uno::Reference< XDictionaryEntry > SearchDicList(
+        const uno::Reference< XSearchableDictionaryList > &xDicList,
+        const OUString &rWord, LanguageType nLanguage,
+        bool bSearchPosDics, bool bSearchSpellEntry )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    uno::Reference< XDictionaryEntry > xEntry;
+
+    if (!xDicList.is())
+        return xEntry;
+
+    const uno::Sequence< uno::Reference< XDictionary > >
+            aDics( xDicList->getDictionaries() );
+    const uno::Reference< XDictionary >
+            *pDic = aDics.getConstArray();
+    sal_Int32 nDics = xDicList->getCount();
+
+    sal_Int32 i;
+    for (i = 0;  i < nDics;  i++)
+    {
+        uno::Reference< XDictionary > axDic = pDic[i];
+
+        DictionaryType  eType = axDic->getDictionaryType();
+        LanguageType    nLang = LinguLocaleToLanguage( axDic->getLocale() );
+
+        if ( axDic.is() && axDic->isActive()
+            && (nLang == nLanguage  ||  LinguIsUnspecified( nLang)) )
+        {
+            // DictionaryType_MIXED is deprecated
+            SAL_WARN_IF(eType == DictionaryType_MIXED, "linguistic", "unexpected dictionary type");
+
+            if (   (!bSearchPosDics  &&  eType == DictionaryType_NEGATIVE)
+                || ( bSearchPosDics  &&  eType == DictionaryType_POSITIVE))
+            {
+                xEntry = axDic->getEntry( rWord );
+                if ( xEntry.is() && (bSearchSpellEntry || lcl_HasHyphInfo( xEntry )) )
+                    break;
+                xEntry = nullptr;
+            }
+        }
+    }
+
+    return xEntry;
+}
+
+bool SaveDictionaries( const uno::Reference< XSearchableDictionaryList > &xDicList )
+{
+    if (!xDicList.is())
+        return true;
+
+    bool bRet = true;
+
+    const Sequence< uno::Reference< XDictionary >  > aDics( xDicList->getDictionaries() );
+    for (const uno::Reference<XDictionary>& rDic : aDics)
+    {
+        try
+        {
+            uno::Reference< frame::XStorable >  xStor( rDic, UNO_QUERY );
+            if (xStor.is())
+            {
+                if (!xStor->isReadonly() && xStor->hasLocation())
+                    xStor->store();
+            }
+        }
+        catch(uno::Exception &)
+        {
+            bRet = false;
+        }
+    }
+
+    return bRet;
+}
+
+DictionaryError AddEntryToDic(
+        uno::Reference< XDictionary > const &rxDic,
+        const OUString &rWord, bool bIsNeg,
+        const OUString &rRplcTxt,
+        bool bStripDot )
+{
+    if (!rxDic.is())
+        return DictionaryError::NOT_EXISTS;
+
+    OUString aTmp( rWord );
+    if (bStripDot)
+    {
+        sal_Int32 nLen = rWord.getLength();
+        if (nLen > 0  &&  '.' == rWord[ nLen - 1])
+        {
+            // remove trailing '.'
+            // (this is the official way to do this :-( )
+            aTmp = aTmp.copy( 0, nLen - 1 );
+        }
+    }
+    bool bAddOk = rxDic->add( aTmp, bIsNeg, rRplcTxt );
+
+    DictionaryError nRes = DictionaryError::NONE;
+    if (!bAddOk)
+    {
+        if (rxDic->isFull())
+            nRes = DictionaryError::FULL;
+        else
+        {
+            uno::Reference< frame::XStorable >  xStor( rxDic, UNO_QUERY );
+            if (xStor.is() && xStor->isReadonly())
+                nRes = DictionaryError::READONLY;
+            else
+                nRes = DictionaryError::UNKNOWN;
+        }
+    }
+
+    return nRes;
+}
+
+std::vector< LanguageType >
+    LocaleSeqToLangVec( uno::Sequence< Locale > const &rLocaleSeq )
+{
+    std::vector< LanguageType >   aLangs;
+    aLangs.reserve(rLocaleSeq.getLength());
+
+    std::transform(rLocaleSeq.begin(), rLocaleSeq.end(), std::back_inserter(aLangs),
+        [](const Locale& rLocale) { return LinguLocaleToLanguage(rLocale); });
+
+    return aLangs;
+}
+
+uno::Sequence< sal_Int16 >
+     LocaleSeqToLangSeq( uno::Sequence< Locale > const &rLocaleSeq )
+{
+    std::vector<sal_Int16> aLangs;
+    aLangs.reserve(rLocaleSeq.getLength());
+
+    std::transform(rLocaleSeq.begin(), rLocaleSeq.end(), std::back_inserter(aLangs),
+        [](const Locale& rLocale) { return static_cast<sal_uInt16>(LinguLocaleToLanguage(rLocale)); });
+
+    return comphelper::containerToSequence(aLangs);
+}
+bool    IsReadOnly( const OUString &rURL, bool *pbExist )
+{
+    bool bRes = false;
+    bool bExists = false;
+
+    if (!rURL.isEmpty())
+    {
+        try
+        {
+            uno::Reference< css::ucb::XCommandEnvironment > xCmdEnv;
+            ::ucbhelper::Content aContent( rURL, xCmdEnv, comphelper::getProcessComponentContext() );
+
+            bExists = aContent.isDocument();
+            if (bExists)
+            {
+                Any aAny( aContent.getPropertyValue( "IsReadOnly" ) );
+                aAny >>= bRes;
+            }
+        }
+        catch (Exception &)
+        {
+            bRes = true;
+        }
+    }
+
+    if (pbExist)
+        *pbExist = bExists;
+    return bRes;
+}
+
+static bool GetAltSpelling( sal_Int16 &rnChgPos, sal_Int16 &rnChgLen, OUString &rRplc,
+        uno::Reference< XHyphenatedWord > const &rxHyphWord )
+{
+    bool bRes = rxHyphWord->isAlternativeSpelling();
+    if (bRes)
+    {
+        OUString aWord( rxHyphWord->getWord() ),
+                 aHyphenatedWord( rxHyphWord->getHyphenatedWord() );
+        sal_Int16   nHyphenationPos     = rxHyphWord->getHyphenationPos();
+        /*sal_Int16   nHyphenPos          = rxHyphWord->getHyphenPos()*/;
+        const sal_Unicode *pWord    = aWord.getStr(),
+                          *pAltWord = aHyphenatedWord.getStr();
+
+        // at least char changes directly left or right to the hyphen
+        // should(!) be handled properly...
+        //! nHyphenationPos and nHyphenPos differ at most by 1 (see above)
+        //! Beware: eg "Schiffahrt" in German (pre spelling reform)
+        //! proves to be a bit nasty (nChgPosLeft and nChgPosRight overlap
+        //! to an extend.)
+
+        // find first different char from left
+        sal_Int32   nPosL    = 0,
+                    nAltPosL = 0;
+        for (sal_Int16 i = 0 ;  pWord[ nPosL ] == pAltWord[ nAltPosL ];  nPosL++, nAltPosL++, i++)
+        {
+            // restrict changes area beginning to the right to
+            // the char immediately following the hyphen.
+            //! serves to insert the additional "f" in "Schiffahrt" at
+            //! position 5 rather than position 6.
+            if (i >= nHyphenationPos + 1)
+                break;
+        }
+
+        // find first different char from right
+        sal_Int32   nPosR    = aWord.getLength() - 1,
+                    nAltPosR = aHyphenatedWord.getLength() - 1;
+        for ( ;  nPosR >= nPosL  &&  nAltPosR >= nAltPosL
+                    &&  pWord[ nPosR ] == pAltWord[ nAltPosR ];
+                nPosR--, nAltPosR--)
+            ;
+
+        rnChgPos = sal::static_int_cast< sal_Int16 >(nPosL);
+        rnChgLen = sal::static_int_cast< sal_Int16 >(nAltPosR - nPosL);
+        assert( rnChgLen >= 0 && "nChgLen < 0");
+
+        sal_Int32 nTxtStart = nPosL;
+        sal_Int32 nTxtLen   = nAltPosR - nPosL + 1;
+        rRplc = aHyphenatedWord.copy( nTxtStart, nTxtLen );
+    }
+    return bRes;
+}
+
+static sal_Int16 GetOrigWordPos( std::u16string_view rOrigWord, sal_Int16 nPos )
+{
+    sal_Int32 nLen = rOrigWord.size();
+    sal_Int32 i = -1;
+    while (nPos >= 0  &&  i++ < nLen)
+    {
+        sal_Unicode cChar = rOrigWord[i];
+        bool bSkip = IsHyphen( cChar ) || IsControlChar( cChar );
+        if (!bSkip)
+            --nPos;
+    }
+    return sal::static_int_cast< sal_Int16 >((0 <= i  &&  i < nLen) ? i : -1);
+}
+
+sal_Int32 GetPosInWordToCheck( std::u16string_view rTxt, sal_Int32 nPos )
+{
+    sal_Int32 nRes = -1;
+    sal_Int32 nLen = rTxt.size();
+    if (0 <= nPos  &&  nPos < nLen)
+    {
+        nRes = 0;
+        for (sal_Int32 i = 0;  i < nPos;  ++i)
+        {
+            sal_Unicode cChar = rTxt[i];
+            bool bSkip = IsHyphen( cChar ) || IsControlChar( cChar );
+            if (!bSkip)
+                ++nRes;
+        }
+    }
+    return nRes;
+}
+
+uno::Reference< XHyphenatedWord > RebuildHyphensAndControlChars(
+        const OUString &rOrigWord,
+        uno::Reference< XHyphenatedWord > const &rxHyphWord )
+{
+    uno::Reference< XHyphenatedWord > xRes;
+    if (!rOrigWord.isEmpty() && rxHyphWord.is())
+    {
+        sal_Int16    nChgPos = 0,
+                 nChgLen = 0;
+        OUString aRplc;
+        bool bAltSpelling = GetAltSpelling( nChgPos, nChgLen, aRplc, rxHyphWord );
+
+        OUString aOrigHyphenatedWord;
+        sal_Int16 nOrigHyphenPos        = -1;
+        sal_Int16 nOrigHyphenationPos   = -1;
+        if (!bAltSpelling)
+        {
+            aOrigHyphenatedWord = rOrigWord;
+            nOrigHyphenPos      = GetOrigWordPos( rOrigWord, rxHyphWord->getHyphenPos() );
+            nOrigHyphenationPos = GetOrigWordPos( rOrigWord, rxHyphWord->getHyphenationPos() );
+        }
+        else
+        {
+            //! should at least work with the German words
+            //! B-"u-c-k-er and Sc-hif-fah-rt
+
+            sal_Int16 nPos = GetOrigWordPos( rOrigWord, nChgPos );
+
+            // get words like Sc-hif-fah-rt to work correct
+            sal_Int16 nHyphenationPos = rxHyphWord->getHyphenationPos();
+            if (nChgPos > nHyphenationPos)
+                --nPos;
+
+            std::u16string_view aLeft = rOrigWord.subView( 0, nPos );
+            std::u16string_view aRight = rOrigWord.subView( nPos ); // FIXME: changes at the right side
+
+            aOrigHyphenatedWord =  aLeft + aRplc + aRight;
+
+            nOrigHyphenPos      = sal::static_int_cast< sal_Int16 >(aLeft.size() +
+                                  rxHyphWord->getHyphenPos() - nChgPos);
+            nOrigHyphenationPos = GetOrigWordPos( rOrigWord, nHyphenationPos );
+        }
+
+        if (nOrigHyphenPos == -1  ||  nOrigHyphenationPos == -1)
+        {
+            SAL_WARN( "linguistic", "failed to get nOrigHyphenPos or nOrigHyphenationPos" );
+        }
+        else
+        {
+            LanguageType nLang = LinguLocaleToLanguage( rxHyphWord->getLocale() );
+            xRes = new HyphenatedWord(
+                        rOrigWord, nLang, nOrigHyphenationPos,
+                        aOrigHyphenatedWord, nOrigHyphenPos );
+        }
+
+    }
+    return xRes;
+}
+
+bool IsUpper( const OUString &rText, sal_Int32 nPos, sal_Int32 nLen, LanguageType nLanguage )
+{
+    CharClass aCC(( LanguageTag( nLanguage ) ));
+    sal_Int32 nFlags = aCC.getStringType( rText, nPos, nLen );
+    return      (nFlags & KCharacterType::UPPER)
+            && !(nFlags & KCharacterType::LOWER);
+}
+
+CapType capitalType(const OUString& aTerm, CharClass const * pCC)
+{
+        sal_Int32 tlen = aTerm.getLength();
+        if (!pCC || !tlen)
+            return CapType::UNKNOWN;
+
+        sal_Int32 nc = 0;
+        for (sal_Int32 tindex = 0; tindex < tlen; ++tindex)
+        {
+            if (pCC->getCharacterType(aTerm,tindex) &
+               css::i18n::KCharacterType::UPPER) nc++;
+        }
+
+        if (nc == 0)
+            return CapType::NOCAP;
+        if (nc == tlen)
+            return CapType::ALLCAP;
+        if ((nc == 1) && (pCC->getCharacterType(aTerm,0) &
+              css::i18n::KCharacterType::UPPER))
+            return CapType::INITCAP;
+
+        return CapType::MIXED;
+}
+
+// sorted(!) array of unicode ranges for code points that are exclusively(!) used as numbers
+// and thus may NOT not be part of names or words like the Chinese/Japanese number characters
+const sal_uInt32 the_aDigitZeroes [] =
+{
+    0x00000030, //0039    ; Decimal # Nd  [10] DIGIT ZERO..DIGIT NINE
+    0x00000660, //0669    ; Decimal # Nd  [10] ARABIC-INDIC DIGIT ZERO..ARABIC-INDIC DIGIT NINE
+    0x000006F0, //06F9    ; Decimal # Nd  [10] EXTENDED ARABIC-INDIC DIGIT ZERO..EXTENDED ARABIC-INDIC DIGIT NINE
+    0x000007C0, //07C9    ; Decimal # Nd  [10] NKO DIGIT ZERO..NKO DIGIT NINE
+    0x00000966, //096F    ; Decimal # Nd  [10] DEVANAGARI DIGIT ZERO..DEVANAGARI DIGIT NINE
+    0x000009E6, //09EF    ; Decimal # Nd  [10] BENGALI DIGIT ZERO..BENGALI DIGIT NINE
+    0x00000A66, //0A6F    ; Decimal # Nd  [10] GURMUKHI DIGIT ZERO..GURMUKHI DIGIT NINE
+    0x00000AE6, //0AEF    ; Decimal # Nd  [10] GUJARATI DIGIT ZERO..GUJARATI DIGIT NINE
+    0x00000B66, //0B6F    ; Decimal # Nd  [10] ODIA DIGIT ZERO..ODIA DIGIT NINE
+    0x00000BE6, //0BEF    ; Decimal # Nd  [10] TAMIL DIGIT ZERO..TAMIL DIGIT NINE
+    0x00000C66, //0C6F    ; Decimal # Nd  [10] TELUGU DIGIT ZERO..TELUGU DIGIT NINE
+    0x00000CE6, //0CEF    ; Decimal # Nd  [10] KANNADA DIGIT ZERO..KANNADA DIGIT NINE
+    0x00000D66, //0D6F    ; Decimal # Nd  [10] MALAYALAM DIGIT ZERO..MALAYALAM DIGIT NINE
+    0x00000E50, //0E59    ; Decimal # Nd  [10] THAI DIGIT ZERO..THAI DIGIT NINE
+    0x00000ED0, //0ED9    ; Decimal # Nd  [10] LAO DIGIT ZERO..LAO DIGIT NINE
+    0x00000F20, //0F29    ; Decimal # Nd  [10] TIBETAN DIGIT ZERO..TIBETAN DIGIT NINE
+    0x00001040, //1049    ; Decimal # Nd  [10] MYANMAR DIGIT ZERO..MYANMAR DIGIT NINE
+    0x00001090, //1099    ; Decimal # Nd  [10] MYANMAR SHAN DIGIT ZERO..MYANMAR SHAN DIGIT NINE
+    0x000017E0, //17E9    ; Decimal # Nd  [10] KHMER DIGIT ZERO..KHMER DIGIT NINE
+    0x00001810, //1819    ; Decimal # Nd  [10] MONGOLIAN DIGIT ZERO..MONGOLIAN DIGIT NINE
+    0x00001946, //194F    ; Decimal # Nd  [10] LIMBU DIGIT ZERO..LIMBU DIGIT NINE
+    0x000019D0, //19D9    ; Decimal # Nd  [10] NEW TAI LUE DIGIT ZERO..NEW TAI LUE DIGIT NINE
+    0x00001B50, //1B59    ; Decimal # Nd  [10] BALINESE DIGIT ZERO..BALINESE DIGIT NINE
+    0x00001BB0, //1BB9    ; Decimal # Nd  [10] SUNDANESE DIGIT ZERO..SUNDANESE DIGIT NINE
+    0x00001C40, //1C49    ; Decimal # Nd  [10] LEPCHA DIGIT ZERO..LEPCHA DIGIT NINE
+    0x00001C50, //1C59    ; Decimal # Nd  [10] OL CHIKI DIGIT ZERO..OL CHIKI DIGIT NINE
+    0x0000A620, //A629    ; Decimal # Nd  [10] VAI DIGIT ZERO..VAI DIGIT NINE
+    0x0000A8D0, //A8D9    ; Decimal # Nd  [10] SAURASHTRA DIGIT ZERO..SAURASHTRA DIGIT NINE
+    0x0000A900, //A909    ; Decimal # Nd  [10] KAYAH LI DIGIT ZERO..KAYAH LI DIGIT NINE
+    0x0000AA50, //AA59    ; Decimal # Nd  [10] CHAM DIGIT ZERO..CHAM DIGIT NINE
+    0x0000FF10, //FF19    ; Decimal # Nd  [10] FULLWIDTH DIGIT ZERO..FULLWIDTH DIGIT NINE
+    0x000104A0, //104A9   ; Decimal # Nd  [10] OSMANYA DIGIT ZERO..OSMANYA DIGIT NINE
+    0x0001D7CE  //1D7FF   ; Decimal # Nd  [50] MATHEMATICAL BOLD DIGIT ZERO..MATHEMATICAL MONOSPACE DIGIT NINE
+};
+
+bool HasDigits( const OUString &rText )
+{
+    const sal_Int32 nLen = rText.getLength();
+
+    sal_Int32 i = 0;
+    while (i < nLen) // for all characters ...
+    {
+        const sal_uInt32 nCodePoint = rText.iterateCodePoints( &i );    // handle unicode surrogates correctly...
+        for (unsigned int nDigitZero : the_aDigitZeroes)   // ... check in all 0..9 ranges
+        {
+            if (nDigitZero > nCodePoint)
+                break;
+            if (/*nDigitZero <= nCodePoint &&*/ nCodePoint <= nDigitZero + 9)
+                return true;
+        }
+    }
+    return false;
+}
+
+bool IsNumeric( std::u16string_view rText )
+{
+    bool bRes = false;
+    if (!rText.empty())
+    {
+        sal_Int32 nLen = rText.size();
+        bRes = true;
+        for(sal_Int32 i = 0; i < nLen; ++i)
+        {
+            sal_Unicode cChar = rText[ i ];
+            if ( '0' > cChar  ||  cChar > '9' )
+            {
+                bRes = false;
+                break;
+            }
+        }
+    }
+    return bRes;
+}
+
+uno::Reference< XLinguProperties > GetLinguProperties()
+{
+    return LinguProperties::create( comphelper::getProcessComponentContext() );
+}
+
+uno::Reference< XSearchableDictionaryList > GetDictionaryList()
+{
+    uno::Reference< XComponentContext > xContext( comphelper::getProcessComponentContext() );
+    uno::Reference< XSearchableDictionaryList > xRef;
+    try
+    {
+        xRef = DictionaryList::create(xContext);
+    }
+    catch (const uno::Exception &)
+    {
+        SAL_WARN( "linguistic", "createInstance failed" );
+    }
+
+    return xRef;
+}
+
+uno::Reference< XDictionary > GetIgnoreAllList()
+{
+    uno::Reference< XDictionary > xRes;
+    uno::Reference< XSearchableDictionaryList > xDL( GetDictionaryList() );
+    if (xDL.is())
+    {
+        std::locale loc(Translate::Create("svt"));
+        xRes = xDL->getDictionaryByName( Translate::get(STR_DESCRIPTION_IGNOREALLLIST, loc) );
+    }
+    return xRes;
+}
+
+AppExitListener::AppExitListener()
+{
+    // add object to Desktop EventListeners in order to properly call
+    // the AtExit function at application exit.
+    uno::Reference< XComponentContext > xContext( comphelper::getProcessComponentContext() );
+
+    try
+    {
+        xDesktop = frame::Desktop::create(xContext);
+    }
+    catch (const uno::Exception &)
+    {
+        SAL_WARN( "linguistic", "createInstance failed" );
+    }
+}
+
+AppExitListener::~AppExitListener()
+{
+}
+
+void AppExitListener::Activate()
+{
+    if (xDesktop.is())
+        xDesktop->addTerminateListener( this );
+}
+
+void AppExitListener::Deactivate()
+{
+    if (xDesktop.is())
+        xDesktop->removeTerminateListener( this );
+}
+
+void SAL_CALL
+    AppExitListener::disposing( const EventObject& rEvtSource )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (xDesktop.is()  &&  rEvtSource.Source == xDesktop)
+    {
+        xDesktop = nullptr;    //! release reference to desktop
+    }
+}
+
+void SAL_CALL
+    AppExitListener::queryTermination( const EventObject& /*rEvtSource*/ )
+{
+}
+
+void SAL_CALL
+    AppExitListener::notifyTermination( const EventObject& rEvtSource )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (xDesktop.is()  &&  rEvtSource.Source == xDesktop)
+    {
+        AtExit();
+    }
+}
+
+}   // namespace linguistic
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/misc2.cxx b/linguistic/source/misc2.cxx
new file mode 100644
index 000000000..86a81e5a1
--- /dev/null
+++ b/linguistic/source/misc2.cxx
@@ -0,0 +1,168 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <string_view>
+
+#include <tools/urlobj.hxx>
+#include <ucbhelper/content.hxx>
+#include <tools/debug.hxx>
+#include <comphelper/processfactory.hxx>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/util/thePathSettings.hpp>
+#include <o3tl/typed_flags_set.hxx>
+
+#include <linguistic/misc.hxx>
+
+using namespace com::sun::star;
+
+namespace {
+
+/// Flags to be used with the multi-path related functions
+/// @see GetDictionaryPaths
+enum class DictionaryPathFlags
+{
+    NONE      = 0x00,
+    INTERNAL  = 0x01,
+    USER      = 0x02,
+};
+
+}
+
+namespace o3tl
+{
+    template<> struct typed_flags<DictionaryPathFlags> : is_typed_flags<DictionaryPathFlags, 0x03> {};
+}
+#define PATH_FLAG_ALL       (DictionaryPathFlags::INTERNAL | DictionaryPathFlags::USER)
+
+namespace linguistic
+{
+
+
+bool FileExists( const OUString &rMainURL )
+{
+    bool bExists = false;
+    if (!rMainURL.isEmpty())
+    {
+        try
+        {
+            ::ucbhelper::Content aContent( rMainURL,
+                    uno::Reference< css::ucb::XCommandEnvironment >(),
+                    comphelper::getProcessComponentContext());
+            bExists = aContent.isDocument();
+        }
+        catch (uno::Exception &)
+        {
+        }
+    }
+    return bExists;
+}
+
+static std::vector< OUString > GetMultiPaths_Impl(
+    std::u16string_view rPathPrefix,
+    DictionaryPathFlags nPathFlags )
+{
+    std::vector< OUString >     aRes;
+    uno::Sequence< OUString >   aInternalPaths;
+    uno::Sequence< OUString >   aUserPaths;
+    OUString                    aWritablePath;
+
+    bool bSuccess = true;
+    uno::Reference< uno::XComponentContext >  xContext( comphelper::getProcessComponentContext() );
+    try
+    {
+        OUString aInternal( OUString::Concat(rPathPrefix) + "_internal" );
+        OUString aUser( OUString::Concat(rPathPrefix) + "_user" );
+        OUString aWriteable( OUString::Concat(rPathPrefix) + "_writable" );
+
+        uno::Reference< util::XPathSettings > xPathSettings =
+            util::thePathSettings::get( xContext );
+        xPathSettings->getPropertyValue( aInternal )  >>= aInternalPaths;
+        xPathSettings->getPropertyValue( aUser )      >>= aUserPaths;
+        xPathSettings->getPropertyValue( aWriteable ) >>= aWritablePath;
+    }
+    catch (uno::Exception &)
+    {
+        bSuccess = false;
+    }
+    if (bSuccess)
+    {
+        // build resulting sequence by adding the paths in the following order:
+        // 1. writable path
+        // 2. all user paths
+        // 3. all internal paths
+        sal_Int32 nMaxEntries = aInternalPaths.getLength() + aUserPaths.getLength();
+        if (!aWritablePath.isEmpty())
+            ++nMaxEntries;
+        aRes.reserve( nMaxEntries );
+        if (!aWritablePath.isEmpty())
+            aRes.push_back(aWritablePath);
+
+        auto lPathIsNotEmpty = [](const OUString& rPath) { return !rPath.isEmpty(); };
+
+        if (nPathFlags & DictionaryPathFlags::USER)
+            std::copy_if(std::cbegin(aUserPaths), std::cend(aUserPaths), std::back_inserter(aRes), lPathIsNotEmpty);
+
+        if (nPathFlags & DictionaryPathFlags::INTERNAL)
+            std::copy_if(std::cbegin(aInternalPaths), std::cend(aInternalPaths), std::back_inserter(aRes), lPathIsNotEmpty);
+    }
+
+    return aRes;
+}
+
+OUString GetDictionaryWriteablePath()
+{
+    std::vector< OUString > aPaths(
+        GetMultiPaths_Impl( u"Dictionary", DictionaryPathFlags::NONE ) );
+    DBG_ASSERT( aPaths.size() == 1, "Dictionary_writable path corrupted?" );
+    OUString aRes;
+    if (!aPaths.empty())
+        aRes = aPaths[0];
+    return aRes;
+}
+
+std::vector< OUString > GetDictionaryPaths()
+{
+    return GetMultiPaths_Impl( u"Dictionary", PATH_FLAG_ALL );
+}
+
+OUString  GetWritableDictionaryURL( std::u16string_view rDicName )
+{
+    // new user writable dictionaries should be created in the 'writable' path
+    OUString aDirName( GetDictionaryWriteablePath() );
+
+    // build URL to use for a new (persistent) dictionary
+    INetURLObject aURLObj;
+    aURLObj.SetSmartProtocol( INetProtocol::File );
+    aURLObj.SetSmartURL( aDirName );
+    DBG_ASSERT(!aURLObj.HasError(), "lng : invalid URL");
+    aURLObj.Append( rDicName, INetURLObject::EncodeMechanism::All );
+    DBG_ASSERT(!aURLObj.HasError(), "lng : invalid URL");
+
+    // DecodeMechanism::NONE preserves the escape sequences that might be included in aDirName
+    // depending on the characters used in the path string. (Needed when comparing
+    // the dictionary URL with GetDictionaryWriteablePath in DicList::createDictionary.)
+    return aURLObj.GetMainURL( INetURLObject::DecodeMechanism::NONE );
+}
+
+}   // namespace linguistic
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/spelldsp.cxx b/linguistic/source/spelldsp.cxx
new file mode 100644
index 000000000..c1b309b00
--- /dev/null
+++ b/linguistic/source/spelldsp.cxx
@@ -0,0 +1,829 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/linguistic2/XLinguServiceEventBroadcaster.hpp>
+#include <com/sun/star/linguistic2/SpellFailure.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+#include <unotools/localedatawrapper.hxx>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/sequence.hxx>
+#include <tools/debug.hxx>
+#include <svl/lngmisc.hxx>
+#include <osl/mutex.hxx>
+#include <sal/log.hxx>
+
+#include <vector>
+
+#include "spelldsp.hxx"
+#include <linguistic/spelldta.hxx>
+#include "lngsvcmgr.hxx"
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+namespace {
+
+// ProposalList: list of proposals for misspelled words
+// The order of strings in the array should be left unchanged because the
+// spellchecker should have put the more likely suggestions at the top.
+// New entries will be added to the end but duplicates are to be avoided.
+// Removing entries is done by assigning the empty string.
+// The sequence is constructed from all non empty strings in the original
+// while maintaining the order.
+class ProposalList
+{
+    std::vector< OUString > aVec;
+
+    bool    HasEntry( std::u16string_view rText ) const;
+
+public:
+    ProposalList()  {}
+    ProposalList(const ProposalList&) = delete;
+    ProposalList& operator=(const ProposalList&) = delete;
+
+    size_t  Count() const;
+    void    Prepend( const OUString &rText );
+    void    Append( const OUString &rNew );
+    void    Append( const std::vector< OUString > &rNew );
+    void    Append( const Sequence< OUString > &rNew );
+    std::vector< OUString > GetVector() const;
+};
+
+}
+
+bool ProposalList::HasEntry( std::u16string_view rText ) const
+{
+    bool bFound = false;
+    size_t nCnt = aVec.size();
+    for (size_t i = 0;  !bFound && i < nCnt;  ++i)
+    {
+        if (aVec[i] == rText)
+            bFound = true;
+    }
+    return bFound;
+}
+
+void ProposalList::Prepend( const OUString &rText )
+{
+    if (!HasEntry( rText ))
+        aVec.insert( aVec.begin(), rText );
+}
+
+void ProposalList::Append( const OUString &rText )
+{
+    if (!HasEntry( rText ))
+        aVec.push_back( rText );
+}
+
+void ProposalList::Append( const std::vector< OUString > &rNew )
+{
+    size_t nLen = rNew.size();
+    for ( size_t i = 0;  i < nLen;  ++i)
+    {
+        const OUString &rText = rNew[i];
+        if (!HasEntry( rText ))
+            Append( rText );
+    }
+}
+
+void ProposalList::Append( const Sequence< OUString > &rNew )
+{
+    for (const OUString& rText : rNew)
+    {
+        if (!HasEntry( rText ))
+            Append( rText );
+    }
+}
+
+size_t ProposalList::Count() const
+{
+    // returns the number of non-empty strings in the vector
+
+    size_t nRes = 0;
+    size_t nLen = aVec.size();
+    for (size_t i = 0;  i < nLen;  ++i)
+    {
+        if (!aVec[i].isEmpty())
+            ++nRes;
+    }
+    return nRes;
+}
+
+std::vector< OUString > ProposalList::GetVector() const
+{
+    sal_Int32 nCount = Count();
+    sal_Int32 nIdx = 0;
+    std::vector< OUString > aRes( nCount );
+    sal_Int32 nLen = aVec.size();
+    for (sal_Int32 i = 0;  i < nLen;  ++i)
+    {
+        const OUString &rText = aVec[i];
+        DBG_ASSERT( nIdx < nCount, "index out of range" );
+        if (nIdx < nCount && !rText.isEmpty())
+            aRes[ nIdx++ ] = rText;
+    }
+    return aRes;
+}
+
+static bool SvcListHasLanguage(
+        const LangSvcEntries_Spell &rEntry,
+        LanguageType nLanguage )
+{
+    Locale aTmpLocale = LanguageTag::convertToLocale( nLanguage );
+
+    return std::any_of(rEntry.aSvcRefs.begin(), rEntry.aSvcRefs.end(),
+        [&aTmpLocale](const Reference<XSpellChecker>& rRef) {
+            return rRef.is() && rRef->hasLocale( aTmpLocale ); });
+}
+
+SpellCheckerDispatcher::SpellCheckerDispatcher( LngSvcMgr &rLngSvcMgr ) :
+    m_rMgr    (rLngSvcMgr)
+{
+}
+
+
+SpellCheckerDispatcher::~SpellCheckerDispatcher()
+{
+}
+
+
+Sequence< Locale > SAL_CALL SpellCheckerDispatcher::getLocales()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    std::vector<Locale> aLocales;
+    aLocales.reserve(m_aSvcMap.size());
+
+    std::transform(m_aSvcMap.begin(), m_aSvcMap.end(), std::back_inserter(aLocales),
+        [](SpellSvcByLangMap_t::const_reference elem) { return LanguageTag::convertToLocale(elem.first); });
+
+    return comphelper::containerToSequence(aLocales);
+}
+
+
+sal_Bool SAL_CALL SpellCheckerDispatcher::hasLocale( const Locale& rLocale )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    SpellSvcByLangMap_t::const_iterator aIt( m_aSvcMap.find( LinguLocaleToLanguage( rLocale ) ) );
+    return aIt != m_aSvcMap.end();
+}
+
+
+sal_Bool SAL_CALL
+    SpellCheckerDispatcher::isValid( const OUString& rWord, const Locale& rLocale,
+            const css::uno::Sequence< ::css::beans::PropertyValue >& rProperties )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return isValid_Impl( rWord, LinguLocaleToLanguage( rLocale ), rProperties );
+}
+
+
+Reference< XSpellAlternatives > SAL_CALL
+    SpellCheckerDispatcher::spell( const OUString& rWord, const Locale& rLocale,
+            const css::uno::Sequence< ::css::beans::PropertyValue >& rProperties )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return spell_Impl( rWord, LinguLocaleToLanguage( rLocale ), rProperties );
+}
+
+
+// returns the overall result of cross-checking with all user-dictionaries
+// including the IgnoreAll list
+static Reference< XDictionaryEntry > lcl_GetRulingDictionaryEntry(
+    const OUString &rWord,
+    LanguageType nLanguage )
+{
+    Reference< XDictionaryEntry > xRes;
+
+    // the order of winning from top to bottom is:
+    // 1) IgnoreAll list will always win
+    // 2) Negative dictionaries will win over positive dictionaries
+    Reference< XDictionary > xIgnoreAll( GetIgnoreAllList() );
+    if (xIgnoreAll.is())
+        xRes = xIgnoreAll->getEntry( rWord );
+    if (!xRes.is())
+    {
+        Reference< XSearchableDictionaryList > xDList( GetDictionaryList() );
+        Reference< XDictionaryEntry > xNegEntry( SearchDicList( xDList,
+                rWord, nLanguage, false, true ) );
+        if (xNegEntry.is())
+            xRes = xNegEntry;
+        else
+        {
+            Reference< XDictionaryEntry > xPosEntry( SearchDicList( xDList,
+                    rWord, nLanguage, true, true ) );
+            if (xPosEntry.is())
+                xRes = xPosEntry;
+        }
+    }
+
+    return xRes;
+}
+
+
+bool SpellCheckerDispatcher::isValid_Impl(
+            const OUString& rWord,
+            LanguageType nLanguage,
+            const PropertyValues& rProperties)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    bool bRes = true;
+
+    if (LinguIsUnspecified( nLanguage) || rWord.isEmpty())
+        return bRes;
+
+    // search for entry with that language
+    SpellSvcByLangMap_t::iterator    aIt( m_aSvcMap.find( nLanguage ) );
+    LangSvcEntries_Spell    *pEntry = aIt != m_aSvcMap.end() ? aIt->second.get() : nullptr;
+
+    if (pEntry)
+    {
+        OUString aChkWord( rWord );
+        Locale aLocale( LanguageTag::convertToLocale( nLanguage ) );
+
+        // replace typographical apostroph by ascii apostroph
+        OUString aSingleQuote( GetLocaleDataWrapper( nLanguage ).getQuotationMarkEnd() );
+        DBG_ASSERT( 1 == aSingleQuote.getLength(), "unexpected length of quotation mark" );
+        if (!aSingleQuote.isEmpty())
+            aChkWord = aChkWord.replace( aSingleQuote[0], '\'' );
+
+        RemoveHyphens( aChkWord );
+        if (IsIgnoreControlChars( rProperties, GetPropSet() ))
+            RemoveControlChars( aChkWord );
+
+        sal_Int32 nLen = pEntry->aSvcRefs.getLength();
+        DBG_ASSERT( nLen == pEntry->aSvcImplNames.getLength(),
+                "lng : sequence length mismatch");
+        DBG_ASSERT( pEntry->nLastTriedSvcIndex < nLen,
+                "lng : index out of range");
+
+        sal_Int32 i = 0;
+        bool bTmpRes = true;
+        bool bTmpResValid = false;
+
+        // try already instantiated services first
+        {
+            const Reference< XSpellChecker >  *pRef  =
+                    pEntry->aSvcRefs.getConstArray();
+            while (i <= pEntry->nLastTriedSvcIndex
+                   && (!bTmpResValid || !bTmpRes))
+            {
+                bTmpResValid = true;
+                if (pRef[i].is()  &&  pRef[i]->hasLocale( aLocale ))
+                {
+                    bTmpRes = GetCache().CheckWord( aChkWord, nLanguage );
+                    if (!bTmpRes)
+                    {
+                        bTmpRes = pRef[i]->isValid( aChkWord, aLocale, rProperties );
+
+                        // Add correct words to the cache.
+                        // But not those that are correct only because of
+                        // the temporary supplied settings.
+                        if (bTmpRes  &&  !rProperties.hasElements())
+                            GetCache().AddWord( aChkWord, nLanguage );
+                    }
+                }
+                else
+                    bTmpResValid = false;
+
+                if (bTmpResValid)
+                    bRes = bTmpRes;
+
+                ++i;
+            }
+        }
+
+        // if still no result instantiate new services and try those
+        if ((!bTmpResValid || !bTmpRes)
+            &&  pEntry->nLastTriedSvcIndex < nLen - 1)
+        {
+            const OUString *pImplNames = pEntry->aSvcImplNames.getConstArray();
+            Reference< XSpellChecker >  *pRef  = pEntry->aSvcRefs .getArray();
+
+            Reference< XComponentContext > xContext(
+                comphelper::getProcessComponentContext() );
+
+            // build service initialization argument
+            Sequence< Any > aArgs(2);
+            aArgs.getArray()[0] <<= GetPropSet();
+
+            while (i < nLen && (!bTmpResValid || !bTmpRes))
+            {
+                // create specific service via it's implementation name
+                Reference< XSpellChecker > xSpell;
+                try
+                {
+                    xSpell.set( xContext->getServiceManager()->createInstanceWithArgumentsAndContext(
+                                    pImplNames[i], aArgs, xContext ),
+                                UNO_QUERY );
+                }
+                catch (uno::Exception &)
+                {
+                    SAL_WARN( "linguistic", "createInstanceWithArguments failed" );
+                }
+                pRef [i] = xSpell;
+
+                Reference< XLinguServiceEventBroadcaster >
+                        xBroadcaster( xSpell, UNO_QUERY );
+                if (xBroadcaster.is())
+                    m_rMgr.AddLngSvcEvtBroadcaster( xBroadcaster );
+
+                bTmpResValid = true;
+                if (xSpell.is()  &&  xSpell->hasLocale( aLocale ))
+                {
+                    bTmpRes = GetCache().CheckWord( aChkWord, nLanguage );
+                    if (!bTmpRes)
+                    {
+                        bTmpRes = xSpell->isValid( aChkWord, aLocale, rProperties );
+                         // Add correct words to the cache.
+                        // But not those that are correct only because of
+                        // the temporary supplied settings.
+                        if (bTmpRes  &&  !rProperties.hasElements())
+                            GetCache().AddWord( aChkWord, nLanguage );
+                    }
+                }
+                else
+                    bTmpResValid = false;
+                if (bTmpResValid)
+                    bRes = bTmpRes;
+
+                pEntry->nLastTriedSvcIndex = static_cast<sal_Int16>(i);
+                ++i;
+            }
+
+            // if language is not supported by any of the services
+            // remove it from the list.
+            if (i == nLen)
+            {
+                if (!SvcListHasLanguage( *pEntry, nLanguage ))
+                    m_aSvcMap.erase( nLanguage );
+            }
+        }
+
+        // cross-check against results from dictionaries which have precedence!
+        if (GetDicList().is()  &&  IsUseDicList( rProperties, GetPropSet() ))
+        {
+            Reference< XDictionaryEntry > xTmp( lcl_GetRulingDictionaryEntry( aChkWord, nLanguage ) );
+            if (xTmp.is()) {
+                bRes = !xTmp->isNegative();
+            } else {
+                setCharClass(LanguageTag(nLanguage));
+                CapType ct = capitalType(aChkWord, m_pCharClass.get());
+                if (ct == CapType::INITCAP || ct == CapType::ALLCAP) {
+                    Reference< XDictionaryEntry > xTmp2( lcl_GetRulingDictionaryEntry( makeLowerCase(aChkWord, m_pCharClass.get()), nLanguage ) );
+                    if (xTmp2.is()) {
+                        bRes = !xTmp2->isNegative();
+                    }
+                }
+            }
+        }
+    }
+
+    return bRes;
+}
+
+
+Reference< XSpellAlternatives > SpellCheckerDispatcher::spell_Impl(
+            const OUString& rWord,
+            LanguageType nLanguage,
+            const PropertyValues& rProperties )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Reference< XSpellAlternatives > xRes;
+
+    if (LinguIsUnspecified( nLanguage) || rWord.isEmpty())
+        return xRes;
+
+    // search for entry with that language
+    SpellSvcByLangMap_t::iterator    aIt( m_aSvcMap.find( nLanguage ) );
+    LangSvcEntries_Spell    *pEntry = aIt != m_aSvcMap.end() ? aIt->second.get() : nullptr;
+
+    if (pEntry)
+    {
+        OUString aChkWord( rWord );
+        Locale aLocale( LanguageTag::convertToLocale( nLanguage ) );
+
+        // replace typographical apostroph by ascii apostroph
+        OUString aSingleQuote( GetLocaleDataWrapper( nLanguage ).getQuotationMarkEnd() );
+        DBG_ASSERT( 1 == aSingleQuote.getLength(), "unexpected length of quotation mark" );
+        if (!aSingleQuote.isEmpty())
+            aChkWord = aChkWord.replace( aSingleQuote[0], '\'' );
+
+        RemoveHyphens( aChkWord );
+        if (IsIgnoreControlChars( rProperties, GetPropSet() ))
+            RemoveControlChars( aChkWord );
+
+        sal_Int32 nLen = pEntry->aSvcRefs.getLength();
+        DBG_ASSERT( nLen == pEntry->aSvcImplNames.getLength(),
+                "lng : sequence length mismatch");
+        DBG_ASSERT( pEntry->nLastTriedSvcIndex < nLen,
+                "lng : index out of range");
+
+        sal_Int32 i = 0;
+        Reference< XSpellAlternatives > xTmpRes;
+        bool bTmpResValid = false;
+
+        // try already instantiated services first
+        {
+            const Reference< XSpellChecker >  *pRef  = pEntry->aSvcRefs.getConstArray();
+            sal_Int32 nNumSuggestions = -1;
+            while (i <= pEntry->nLastTriedSvcIndex
+                   &&  (!bTmpResValid || xTmpRes.is()) )
+            {
+                bTmpResValid = true;
+                if (pRef[i].is()  &&  pRef[i]->hasLocale( aLocale ))
+                {
+                    bool bOK = GetCache().CheckWord( aChkWord, nLanguage );
+                    if (bOK)
+                        xTmpRes = nullptr;
+                    else
+                    {
+                        xTmpRes = pRef[i]->spell( aChkWord, aLocale, rProperties );
+
+                        // Add correct words to the cache.
+                        // But not those that are correct only because of
+                        // the temporary supplied settings.
+                        if (!xTmpRes.is()  &&  !rProperties.hasElements())
+                            GetCache().AddWord( aChkWord, nLanguage );
+                    }
+                }
+                else
+                    bTmpResValid = false;
+
+                // return first found result if the word is not known by any checker.
+                // But if that result has no suggestions use the first one that does
+                // provide suggestions for the misspelled word.
+                if (!xRes.is() && bTmpResValid)
+                {
+                    xRes = xTmpRes;
+                    nNumSuggestions = 0;
+                    if (xRes.is())
+                        nNumSuggestions = xRes->getAlternatives().getLength();
+                }
+                sal_Int32 nTmpNumSuggestions = 0;
+                if (xTmpRes.is() && bTmpResValid)
+                    nTmpNumSuggestions = xTmpRes->getAlternatives().getLength();
+                if (xRes.is() && nNumSuggestions == 0 && nTmpNumSuggestions > 0)
+                {
+                    xRes = xTmpRes;
+                    nNumSuggestions = nTmpNumSuggestions;
+                }
+
+                ++i;
+            }
+        }
+
+        // if still no result instantiate new services and try those
+        if ((!bTmpResValid || xTmpRes.is())
+            &&  pEntry->nLastTriedSvcIndex < nLen - 1)
+        {
+            const OUString *pImplNames = pEntry->aSvcImplNames.getConstArray();
+            Reference< XSpellChecker >  *pRef  = pEntry->aSvcRefs .getArray();
+
+            Reference< XComponentContext > xContext(
+                comphelper::getProcessComponentContext() );
+
+            // build service initialization argument
+            Sequence< Any > aArgs(2);
+            aArgs.getArray()[0] <<= GetPropSet();
+
+            sal_Int32 nNumSuggestions = -1;
+            while (i < nLen  &&  (!bTmpResValid || xTmpRes.is()))
+            {
+                // create specific service via it's implementation name
+                Reference< XSpellChecker > xSpell;
+                try
+                {
+                    xSpell.set( xContext->getServiceManager()->createInstanceWithArgumentsAndContext(
+                                    pImplNames[i], aArgs, xContext ),
+                                UNO_QUERY );
+                }
+                catch (uno::Exception &)
+                {
+                    SAL_WARN( "linguistic", "createInstanceWithArguments failed" );
+                }
+                pRef [i] = xSpell;
+
+                Reference< XLinguServiceEventBroadcaster >
+                        xBroadcaster( xSpell, UNO_QUERY );
+                if (xBroadcaster.is())
+                    m_rMgr.AddLngSvcEvtBroadcaster( xBroadcaster );
+
+                bTmpResValid = true;
+                if (xSpell.is()  &&  xSpell->hasLocale( aLocale ))
+                {
+                    bool bOK = GetCache().CheckWord( aChkWord, nLanguage );
+                    if (bOK)
+                        xTmpRes = nullptr;
+                    else
+                    {
+                        xTmpRes = xSpell->spell( aChkWord, aLocale, rProperties );
+
+                        // Add correct words to the cache.
+                        // But not those that are correct only because of
+                        // the temporary supplied settings.
+                        if (!xTmpRes.is()  &&  !rProperties.hasElements())
+                            GetCache().AddWord( aChkWord, nLanguage );
+                    }
+                }
+                else
+                    bTmpResValid = false;
+
+                // return first found result if the word is not known by any checker.
+                // But if that result has no suggestions use the first one that does
+                // provide suggestions for the misspelled word.
+                if (!xRes.is() && bTmpResValid)
+                {
+                    xRes = xTmpRes;
+                    nNumSuggestions = 0;
+                    if (xRes.is())
+                        nNumSuggestions = xRes->getAlternatives().getLength();
+                }
+                sal_Int32 nTmpNumSuggestions = 0;
+                if (xTmpRes.is() && bTmpResValid)
+                    nTmpNumSuggestions = xTmpRes->getAlternatives().getLength();
+                if (xRes.is() && nNumSuggestions == 0 && nTmpNumSuggestions > 0)
+                {
+                    xRes = xTmpRes;
+                    nNumSuggestions = nTmpNumSuggestions;
+                }
+
+                pEntry->nLastTriedSvcIndex = static_cast<sal_Int16>(i);
+                ++i;
+            }
+
+            // if language is not supported by any of the services
+            // remove it from the list.
+            if (i == nLen)
+            {
+                if (!SvcListHasLanguage( *pEntry, nLanguage ))
+                    m_aSvcMap.erase( nLanguage );
+            }
+        }
+
+        // if word is finally found to be correct
+        // clear previously remembered alternatives
+        if (bTmpResValid  &&  !xTmpRes.is())
+            xRes = nullptr;
+
+        // list of proposals found (to be checked against entries of
+        // negative dictionaries)
+        ProposalList aProposalList;
+        sal_Int16 eFailureType = -1;    // no failure
+        if (xRes.is())
+        {
+            aProposalList.Append( xRes->getAlternatives() );
+            eFailureType = xRes->getFailureType();
+        }
+        Reference< XSearchableDictionaryList > xDList;
+        if (GetDicList().is()  &&  IsUseDicList( rProperties, GetPropSet() ))
+            xDList = GetDicList();
+
+        // cross-check against results from user-dictionaries which have precedence!
+        if (xDList.is())
+        {
+            Reference< XDictionaryEntry > xTmp( lcl_GetRulingDictionaryEntry( aChkWord, nLanguage ) );
+            if (xTmp.is())
+            {
+                if (xTmp->isNegative())    // negative entry found
+                {
+                    eFailureType = SpellFailure::IS_NEGATIVE_WORD;
+
+                    // replacement text to be added to suggestions, if not empty
+                    OUString aAddRplcTxt( xTmp->getReplacementText() );
+
+                    // replacement text must not be in negative dictionary itself
+                    if (!aAddRplcTxt.isEmpty() &&
+                        !SearchDicList( xDList, aAddRplcTxt, nLanguage, false, true ).is())
+                    {
+                        aProposalList.Prepend( aAddRplcTxt );
+                    }
+                }
+                else    // positive entry found
+                {
+                    xRes = nullptr;
+                    eFailureType = -1;  // no failure
+                }
+            }
+            else
+            {
+                setCharClass(LanguageTag(nLanguage));
+                CapType ct = capitalType(aChkWord, m_pCharClass.get());
+                if (ct == CapType::INITCAP || ct == CapType::ALLCAP)
+                {
+                    Reference< XDictionaryEntry > xTmp2( lcl_GetRulingDictionaryEntry( makeLowerCase(aChkWord, m_pCharClass.get()), nLanguage ) );
+                    if (xTmp2.is())
+                    {
+                        if (xTmp2->isNegative())    // negative entry found
+                        {
+                            eFailureType = SpellFailure::IS_NEGATIVE_WORD;
+
+                            // replacement text to be added to suggestions, if not empty
+                            OUString aAddRplcTxt( xTmp2->getReplacementText() );
+
+                            // replacement text must not be in negative dictionary itself
+                            if (!aAddRplcTxt.isEmpty() &&
+                                !SearchDicList( xDList, aAddRplcTxt, nLanguage, false, true ).is())
+                            {
+                                switch ( ct )
+                                {
+                                    case CapType::INITCAP:
+                                        aProposalList.Prepend( m_pCharClass->titlecase(aAddRplcTxt) );
+                                        break;
+                                    case CapType::ALLCAP:
+                                        aProposalList.Prepend( m_pCharClass->uppercase(aAddRplcTxt) );
+                                        break;
+                                    default:
+                                        /* can't happen because of if ct ==  above */
+                                        break;
+                                }
+                            }
+                        }
+                        else    // positive entry found
+                        {
+                            xRes = nullptr;
+                            eFailureType = -1;  // no failure
+                        }
+                    }
+                }
+            }
+        }
+
+        if (eFailureType != -1)     // word misspelled or found in negative user-dictionary
+        {
+            // search suitable user-dictionaries for suggestions that are
+            // similar to the misspelled word
+            std::vector< OUString > aDicListProps;   // list of proposals from user-dictionaries
+            SearchSimilarText( aChkWord, nLanguage, xDList, aDicListProps );
+            aProposalList.Append( aDicListProps );
+            std::vector< OUString > aProposals = aProposalList.GetVector();
+
+            // remove entries listed in negative dictionaries
+            // (we don't want to display suggestions that will be regarded as misspelled later on)
+            if (xDList.is())
+                SeqRemoveNegEntries( aProposals, xDList, nLanguage );
+
+            uno::Reference< linguistic2::XSetSpellAlternatives > xSetAlt( xRes, uno::UNO_QUERY );
+            if (xSetAlt.is())
+            {
+                xSetAlt->setAlternatives( comphelper::containerToSequence(aProposals) );
+                xSetAlt->setFailureType( eFailureType );
+            }
+            else
+            {
+                if (xRes.is())
+                {
+                    SAL_WARN( "linguistic", "XSetSpellAlternatives not implemented!" );
+                }
+                else if (!aProposals.empty())
+                {
+                    // no xRes but Proposals found from the user-dictionaries.
+                    // Thus we need to create an xRes...
+                    xRes = new linguistic::SpellAlternatives( rWord, nLanguage,
+                            comphelper::containerToSequence(aProposals) );
+                }
+            }
+        }
+    }
+
+    return xRes;
+}
+
+uno::Sequence< sal_Int16 > SAL_CALL SpellCheckerDispatcher::getLanguages(  )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    uno::Sequence< Locale > aTmp( getLocales() );
+    uno::Sequence< sal_Int16 > aRes( LocaleSeqToLangSeq( aTmp ) );
+    return aRes;
+}
+
+
+sal_Bool SAL_CALL SpellCheckerDispatcher::hasLanguage(
+    sal_Int16 nLanguage )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return hasLocale( LanguageTag::convertToLocale(LanguageType(static_cast<sal_uInt16>(nLanguage))));
+}
+
+
+sal_Bool SAL_CALL SpellCheckerDispatcher::isValid(
+    const OUString& rWord,
+    sal_Int16 nLanguage,
+    const uno::Sequence< beans::PropertyValue >& rProperties )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return isValid( rWord, LanguageTag::convertToLocale(LanguageType(static_cast<sal_uInt16>(nLanguage))), rProperties);
+}
+
+
+uno::Reference< linguistic2::XSpellAlternatives > SAL_CALL SpellCheckerDispatcher::spell(
+    const OUString& rWord,
+    sal_Int16 nLanguage,
+    const uno::Sequence< beans::PropertyValue >& rProperties )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return spell(rWord, LanguageTag::convertToLocale(LanguageType(static_cast<sal_uInt16>(nLanguage))), rProperties);
+}
+
+
+void SpellCheckerDispatcher::SetServiceList( const Locale &rLocale,
+        const Sequence< OUString > &rSvcImplNames )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (m_pCache)
+        m_pCache->Flush();    // new services may spell differently...
+
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+
+    sal_Int32 nLen = rSvcImplNames.getLength();
+    if (0 == nLen)
+        // remove entry
+        m_aSvcMap.erase( nLanguage );
+    else
+    {
+        // modify/add entry
+        LangSvcEntries_Spell *pEntry = m_aSvcMap[ nLanguage ].get();
+        if (pEntry)
+        {
+            pEntry->Clear();
+            pEntry->aSvcImplNames = rSvcImplNames;
+            pEntry->aSvcRefs = Sequence< Reference < XSpellChecker > > ( nLen );
+        }
+        else
+        {
+            auto pTmpEntry = std::make_shared<LangSvcEntries_Spell>( rSvcImplNames );
+            pTmpEntry->aSvcRefs = Sequence< Reference < XSpellChecker > >( nLen );
+            m_aSvcMap[ nLanguage ] = pTmpEntry;
+        }
+    }
+}
+
+
+Sequence< OUString >
+    SpellCheckerDispatcher::GetServiceList( const Locale &rLocale ) const
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Sequence< OUString > aRes;
+
+    // search for entry with that language and use data from that
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    const SpellSvcByLangMap_t::const_iterator aIt( m_aSvcMap.find( nLanguage ) );
+    const LangSvcEntries_Spell      *pEntry = aIt != m_aSvcMap.end() ? aIt->second.get() : nullptr;
+    if (pEntry)
+        aRes = pEntry->aSvcImplNames;
+
+    return aRes;
+}
+
+
+void SpellCheckerDispatcher::FlushSpellCache()
+{
+    if (m_pCache)
+        m_pCache->Flush();
+}
+
+void SpellCheckerDispatcher::setCharClass(const LanguageTag& rLanguageTag)
+{
+    if (m_pCharClass && m_pCharClass->getLanguageTag() == rLanguageTag)
+        return;
+    m_pCharClass.reset( new CharClass(rLanguageTag) );
+}
+
+
+OUString SpellCheckerDispatcher::makeLowerCase(const OUString& aTerm, CharClass const * pCC)
+{
+    if (pCC)
+        return pCC->lowercase(aTerm);
+    return aTerm;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/spelldsp.hxx b/linguistic/source/spelldsp.hxx
new file mode 100644
index 000000000..b617f7498
--- /dev/null
+++ b/linguistic/source/spelldsp.hxx
@@ -0,0 +1,141 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_SPELLDSP_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_SPELLDSP_HXX
+
+#include "defs.hxx"
+#include <linguistic/misc.hxx>
+#include <iprcache.hxx>
+
+#include <cppuhelper/implbase.hxx>
+#include <com/sun/star/beans/PropertyValues.hpp>
+#include <com/sun/star/linguistic2/XSpellChecker1.hpp>
+#include <com/sun/star/linguistic2/XSpellChecker.hpp>
+#include <com/sun/star/linguistic2/XSearchableDictionaryList.hpp>
+
+#include <map>
+#include <memory>
+#include <unotools/charclass.hxx>
+
+class LngSvcMgr;
+
+
+class SpellCheckerDispatcher :
+    public cppu::WeakImplHelper
+    <
+        css::linguistic2::XSpellChecker1,
+        css::linguistic2::XSpellChecker
+    >,
+    public LinguDispatcher
+{
+    typedef std::shared_ptr< LangSvcEntries_Spell >               LangSvcEntries_Spell_Ptr_t;
+    typedef std::map< LanguageType, LangSvcEntries_Spell_Ptr_t >    SpellSvcByLangMap_t;
+    SpellSvcByLangMap_t     m_aSvcMap;
+
+    css::uno::Reference< css::linguistic2::XLinguProperties >           m_xPropSet;
+    css::uno::Reference< css::linguistic2::XSearchableDictionaryList >  m_xDicList;
+
+    LngSvcMgr                       &m_rMgr;
+    mutable std::unique_ptr<linguistic::SpellCache> m_pCache; // Spell Cache (holds known words)
+    std::unique_ptr<CharClass>       m_pCharClass;
+
+    SpellCheckerDispatcher(const SpellCheckerDispatcher &) = delete;
+    SpellCheckerDispatcher & operator = (const SpellCheckerDispatcher &) = delete;
+
+    inline linguistic::SpellCache &  GetCache() const;
+
+    inline const css::uno::Reference< css::linguistic2::XLinguProperties > &
+            GetPropSet();
+    inline const css::uno::Reference< css::linguistic2::XSearchableDictionaryList > &
+            GetDicList();
+
+    /// @throws css::uno::RuntimeException
+    /// @throws css::lang::IllegalArgumentException
+    bool    isValid_Impl(const OUString& aWord, LanguageType nLanguage,
+                    const css::beans::PropertyValues& aProperties);
+
+    /// @throws css::uno::RuntimeException
+    /// @throws css::lang::IllegalArgumentException
+    css::uno::Reference<
+        css::linguistic2::XSpellAlternatives >
+            spell_Impl(const OUString& aWord, LanguageType nLanguage,
+                    const css::beans::PropertyValues& aProperties);
+
+public:
+    explicit SpellCheckerDispatcher( LngSvcMgr &rLngSvcMgr );
+    virtual ~SpellCheckerDispatcher() override;
+
+    // XSupportedLocales (for XSpellChecker)
+    virtual css::uno::Sequence< css::lang::Locale > SAL_CALL getLocales() override;
+    virtual sal_Bool SAL_CALL hasLocale( const css::lang::Locale& aLocale ) override;
+
+    // XSpellChecker
+    virtual sal_Bool SAL_CALL isValid( const OUString& aWord, const css::lang::Locale& aLocale, const css::uno::Sequence< ::css::beans::PropertyValue >& aProperties ) override;
+    virtual css::uno::Reference< css::linguistic2::XSpellAlternatives > SAL_CALL spell( const OUString& aWord, const css::lang::Locale& aLocale, const css::uno::Sequence< ::css::beans::PropertyValue >& aProperties ) override;
+
+    // XSupportedLanguages
+    virtual css::uno::Sequence< ::sal_Int16 > SAL_CALL getLanguages(  ) override;
+    virtual sal_Bool SAL_CALL hasLanguage( ::sal_Int16 nLanguage ) override;
+
+    // XSpellChecker1
+    virtual sal_Bool SAL_CALL isValid( const OUString& aWord, ::sal_Int16 nLanguage, const css::uno::Sequence< css::beans::PropertyValue >& aProperties ) override;
+    virtual css::uno::Reference< css::linguistic2::XSpellAlternatives > SAL_CALL spell( const OUString& aWord, ::sal_Int16 nLanguage, const css::uno::Sequence< css::beans::PropertyValue >& aProperties ) override;
+
+    // LinguDispatcher
+    virtual void SetServiceList( const css::lang::Locale &rLocale, const css::uno::Sequence< OUString > &rSvcImplNames ) override;
+    virtual css::uno::Sequence< OUString > GetServiceList( const css::lang::Locale &rLocale ) const override;
+
+    void    FlushSpellCache();
+
+private:
+    void setCharClass(const LanguageTag& rLanguageTag);
+    static OUString makeLowerCase(const OUString&, CharClass const *);
+
+};
+
+inline linguistic::SpellCache & SpellCheckerDispatcher::GetCache() const
+{
+    if (!m_pCache)
+        m_pCache.reset(new linguistic::SpellCache());
+    return *m_pCache;
+}
+
+
+inline const css::uno::Reference< css::linguistic2::XLinguProperties > &
+        SpellCheckerDispatcher::GetPropSet()
+{
+    if (!m_xPropSet.is())
+        m_xPropSet = linguistic::GetLinguProperties();
+    return m_xPropSet;
+}
+
+
+inline const css::uno::Reference< css::linguistic2::XSearchableDictionaryList > &
+        SpellCheckerDispatcher::GetDicList()
+{
+    if (!m_xDicList.is())
+        m_xDicList = linguistic::GetDictionaryList();
+    return m_xDicList;
+}
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/spelldta.cxx b/linguistic/source/spelldta.cxx
new file mode 100644
index 000000000..6aa99f8b7
--- /dev/null
+++ b/linguistic/source/spelldta.cxx
@@ -0,0 +1,270 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/linguistic2/SpellFailure.hpp>
+#include <com/sun/star/linguistic2/XSearchableDictionaryList.hpp>
+#include <osl/mutex.hxx>
+#include <i18nlangtag/languagetag.hxx>
+
+#include <algorithm>
+#include <utility>
+#include <vector>
+
+#include <linguistic/misc.hxx>
+#include <linguistic/spelldta.hxx>
+#include <rtl/ref.hxx>
+
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+
+
+namespace linguistic
+{
+
+#define MAX_PROPOSALS   40
+
+static bool SeqHasEntry(
+        const std::vector< OUString > &rSeq,
+        std::u16string_view rTxt)
+{
+    bool bRes = false;
+    sal_Int32 nLen = rSeq.size();
+    for (sal_Int32 i = 0;  i < nLen && !bRes;  ++i)
+    {
+        if (rTxt == rSeq[i])
+            bRes = true;
+    }
+    return bRes;
+}
+
+
+void SearchSimilarText( const OUString &rText, LanguageType nLanguage,
+        Reference< XSearchableDictionaryList > const &xDicList,
+        std::vector< OUString > & rDicListProps )
+{
+    if (!xDicList.is())
+        return;
+
+    const uno::Sequence< Reference< XDictionary > >
+            aDics( xDicList->getDictionaries() );
+    const Reference< XDictionary >
+            *pDic = aDics.getConstArray();
+    sal_Int32 nDics = xDicList->getCount();
+
+    for (sal_Int32 i = 0;  i < nDics;  i++)
+    {
+        Reference< XDictionary > xDic = pDic[i];
+
+        LanguageType nLang = LinguLocaleToLanguage( xDic->getLocale() );
+
+        if ( xDic.is() && xDic->isActive()
+            && (nLang == nLanguage  ||  LinguIsUnspecified( nLang)) )
+        {
+#if OSL_DEBUG_LEVEL > 0
+            DictionaryType  eType = xDic->getDictionaryType();
+            (void) eType;
+            assert( eType != DictionaryType_MIXED && "unexpected dictionary type" );
+#endif
+            const Sequence< Reference< XDictionaryEntry > > aEntries = xDic->getEntries();
+            for (const Reference<XDictionaryEntry>& rEntry : aEntries)
+            {
+                OUString aEntryTxt;
+                if (rEntry.is())
+                {
+                    // remove characters used to determine hyphenation positions
+                    aEntryTxt = rEntry->getDictionaryWord().replaceAll("=", "");
+                }
+                if (!aEntryTxt.isEmpty()  &&  aEntryTxt.getLength() > 1  &&  LevDistance( rText, aEntryTxt ) <= 2)
+                    rDicListProps.push_back( aEntryTxt );
+            }
+        }
+    }
+}
+
+
+void SeqRemoveNegEntries( std::vector< OUString > &rSeq,
+        Reference< XSearchableDictionaryList > const &rxDicList,
+        LanguageType nLanguage )
+{
+    bool bSthRemoved = false;
+    sal_Int32 nLen = rSeq.size();
+    for (sal_Int32 i = 0;  i < nLen;  ++i)
+    {
+        Reference< XDictionaryEntry > xNegEntry( SearchDicList( rxDicList,
+                    rSeq[i], nLanguage, false, true ) );
+        if (xNegEntry.is())
+        {
+            rSeq[i].clear();
+            bSthRemoved = true;
+        }
+    }
+    if (bSthRemoved)
+    {
+        std::vector< OUString > aNew;
+        // merge sequence without duplicates and empty strings in new empty sequence
+        rSeq = MergeProposalSeqs( aNew, rSeq );
+    }
+}
+
+
+std::vector< OUString > MergeProposalSeqs(
+            std::vector< OUString > &rAlt1,
+            std::vector< OUString > &rAlt2 )
+{
+    std::vector< OUString > aMerged;
+
+    size_t nAltCount1 = rAlt1.size();
+    size_t nAltCount2 = rAlt2.size();
+
+    sal_Int32 nCountNew = std::min<sal_Int32>( nAltCount1 + nAltCount2, sal_Int32(MAX_PROPOSALS) );
+    aMerged.resize( nCountNew );
+
+    sal_Int32 nIndex = 0;
+    sal_Int32 i = 0;
+    for (int j = 0;  j < 2;  j++)
+    {
+        sal_Int32        nCount  = j == 0 ? nAltCount1 : nAltCount2;
+        std::vector< OUString >& rAlt   = j == 0 ? rAlt1 : rAlt2;
+        for (i = 0;  i < nCount  &&  nIndex < MAX_PROPOSALS;  i++)
+        {
+            if (!rAlt[i].isEmpty() &&
+                !SeqHasEntry(aMerged, rAlt[i] ))
+                aMerged[ nIndex++ ] = rAlt[ i ];
+        }
+    }
+    aMerged.resize( nIndex );
+
+    return aMerged;
+}
+
+
+SpellAlternatives::SpellAlternatives()
+{
+    nLanguage   = LANGUAGE_NONE;
+    nType       = SpellFailure::IS_NEGATIVE_WORD;
+}
+
+
+SpellAlternatives::SpellAlternatives(
+        OUString aWord_, LanguageType nLang,
+        const Sequence< OUString > &rAlternatives ) :
+    aAlt        (rAlternatives),
+    aWord       (std::move(aWord_)),
+    nType       (SpellFailure::IS_NEGATIVE_WORD),
+    nLanguage   (nLang)
+{
+}
+
+
+SpellAlternatives::~SpellAlternatives()
+{
+}
+
+
+OUString SAL_CALL SpellAlternatives::getWord()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return aWord;
+}
+
+
+Locale SAL_CALL SpellAlternatives::getLocale()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return LanguageTag::convertToLocale( nLanguage );
+}
+
+
+sal_Int16 SAL_CALL SpellAlternatives::getFailureType()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return nType;
+}
+
+
+sal_Int16 SAL_CALL SpellAlternatives::getAlternativesCount()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return static_cast<sal_Int16>(aAlt.getLength());
+}
+
+
+Sequence< OUString > SAL_CALL SpellAlternatives::getAlternatives()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return aAlt;
+}
+
+
+void SAL_CALL SpellAlternatives::setAlternatives( const uno::Sequence< OUString >& rAlternatives )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    aAlt = rAlternatives;
+}
+
+
+void SAL_CALL SpellAlternatives::setFailureType( sal_Int16 nFailureType )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    nType = nFailureType;
+}
+
+
+void SpellAlternatives::SetWordLanguage(const OUString &rWord, LanguageType nLang)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    aWord = rWord;
+    nLanguage = nLang;
+}
+
+
+void SpellAlternatives::SetFailureType(sal_Int16 nTypeP)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    nType = nTypeP;
+}
+
+
+void SpellAlternatives::SetAlternatives( const Sequence< OUString > &rAlt )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    aAlt = rAlt;
+}
+
+
+css::uno::Reference < css::linguistic2::XSpellAlternatives > SpellAlternatives::CreateSpellAlternatives(
+        const OUString &rWord, LanguageType nLang, sal_Int16 nTypeP, const css::uno::Sequence< OUString > &rAlt )
+{
+    rtl::Reference<SpellAlternatives> pAlt = new SpellAlternatives;
+    pAlt->SetWordLanguage( rWord, nLang );
+    pAlt->SetFailureType( nTypeP );
+    pAlt->SetAlternatives( rAlt );
+    return pAlt;
+}
+
+
+}   // namespace linguistic
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/thesdsp.cxx b/linguistic/source/thesdsp.cxx
new file mode 100644
index 000000000..2ffe3642e
--- /dev/null
+++ b/linguistic/source/thesdsp.cxx
@@ -0,0 +1,240 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <i18nlangtag/lang.h>
+#include <i18nlangtag/languagetag.hxx>
+#include <tools/debug.hxx>
+#include <svl/lngmisc.hxx>
+
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/sequence.hxx>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <osl/mutex.hxx>
+#include <sal/log.hxx>
+
+#include "thesdsp.hxx"
+#include <linguistic/misc.hxx>
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+static bool SvcListHasLanguage(
+        const Sequence< Reference< XThesaurus > > &rRefs,
+        const Locale &rLocale )
+{
+    return std::any_of(rRefs.begin(), rRefs.end(),
+        [&rLocale](const Reference<XThesaurus>& rRef) {
+            return rRef.is() && rRef->hasLocale( rLocale ); });
+}
+
+
+ThesaurusDispatcher::ThesaurusDispatcher()
+{
+}
+
+
+ThesaurusDispatcher::~ThesaurusDispatcher()
+{
+    ClearSvcList();
+}
+
+
+void ThesaurusDispatcher::ClearSvcList()
+{
+    // release memory for each table entry
+    ThesSvcByLangMap_t().swap(aSvcMap);
+}
+
+
+Sequence< Locale > SAL_CALL
+    ThesaurusDispatcher::getLocales()
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    std::vector<Locale> aLocales;
+    aLocales.reserve(aSvcMap.size());
+
+    std::transform(aSvcMap.begin(), aSvcMap.end(), std::back_inserter(aLocales),
+        [](ThesSvcByLangMap_t::const_reference elem) { return LanguageTag::convertToLocale(elem.first); });
+
+    return comphelper::containerToSequence(aLocales);
+}
+
+
+sal_Bool SAL_CALL
+    ThesaurusDispatcher::hasLocale( const Locale& rLocale )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    ThesSvcByLangMap_t::const_iterator aIt( aSvcMap.find( LinguLocaleToLanguage( rLocale ) ) );
+    return aIt != aSvcMap.end();
+}
+
+
+Sequence< Reference< XMeaning > > SAL_CALL
+    ThesaurusDispatcher::queryMeanings(
+            const OUString& rTerm, const Locale& rLocale,
+            const css::uno::Sequence< ::css::beans::PropertyValue >& rProperties )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Sequence< Reference< XMeaning > >   aMeanings;
+
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    if (LinguIsUnspecified( nLanguage) || rTerm.isEmpty())
+        return aMeanings;
+
+    // search for entry with that language
+    ThesSvcByLangMap_t::iterator    aIt( aSvcMap.find( nLanguage ) );
+    LangSvcEntries_Thes     *pEntry = aIt != aSvcMap.end() ? aIt->second.get() : nullptr;
+
+    if (pEntry)
+    {
+        OUString aChkWord = rTerm.replace( SVT_HARD_SPACE, ' ' );
+        RemoveHyphens( aChkWord );
+        if (IsIgnoreControlChars( rProperties, GetPropSet() ))
+            RemoveControlChars( aChkWord );
+
+        sal_Int32 nLen = pEntry->aSvcRefs.getLength();
+        DBG_ASSERT( nLen == pEntry->aSvcImplNames.getLength(),
+                "lng : sequence length mismatch");
+        DBG_ASSERT( pEntry->nLastTriedSvcIndex < nLen,
+                "lng : index out of range");
+
+        sal_Int32 i = 0;
+
+        // try already instantiated services first
+        {
+            const Reference< XThesaurus > *pRef = pEntry->aSvcRefs.getConstArray();
+            while (i <= pEntry->nLastTriedSvcIndex
+                   &&  !aMeanings.hasElements())
+            {
+                if (pRef[i].is()  &&  pRef[i]->hasLocale( rLocale ))
+                    aMeanings = pRef[i]->queryMeanings( aChkWord, rLocale, rProperties );
+                ++i;
+            }
+        }
+
+        // if still no result instantiate new services and try those
+        if (!aMeanings.hasElements()
+            &&  pEntry->nLastTriedSvcIndex < nLen - 1)
+        {
+            const OUString *pImplNames = pEntry->aSvcImplNames.getConstArray();
+            Reference< XThesaurus > *pRef = pEntry->aSvcRefs.getArray();
+
+            Reference< XComponentContext > xContext(
+                comphelper::getProcessComponentContext() );
+
+            // build service initialization argument
+            Sequence< Any > aArgs(1);
+            aArgs.getArray()[0] <<= GetPropSet();
+
+            while (i < nLen  &&  !aMeanings.hasElements())
+            {
+                // create specific service via it's implementation name
+                Reference< XThesaurus > xThes;
+                try
+                {
+                    xThes.set(  xContext->getServiceManager()->createInstanceWithArgumentsAndContext(
+                                    pImplNames[i], aArgs, xContext ),
+                                UNO_QUERY );
+                }
+                catch (uno::Exception &)
+                {
+                    SAL_WARN( "linguistic", "createInstanceWithArguments failed" );
+                }
+                pRef[i] = xThes;
+
+                if (xThes.is()  &&  xThes->hasLocale( rLocale ))
+                    aMeanings = xThes->queryMeanings( aChkWord, rLocale, rProperties );
+
+                pEntry->nLastTriedSvcIndex = static_cast<sal_Int16>(i);
+                ++i;
+            }
+
+            // if language is not supported by any of the services
+            // remove it from the list.
+            if (i == nLen  &&  !aMeanings.hasElements())
+            {
+                if (!SvcListHasLanguage( pEntry->aSvcRefs, rLocale ))
+                    aSvcMap.erase( nLanguage );
+            }
+        }
+    }
+
+    return aMeanings;
+}
+
+
+void ThesaurusDispatcher::SetServiceList( const Locale &rLocale,
+        const Sequence< OUString > &rSvcImplNames )
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+
+    sal_Int32 nLen = rSvcImplNames.getLength();
+    if (0 == nLen)
+        // remove entry
+        aSvcMap.erase( nLanguage );
+    else
+    {
+        // modify/add entry
+        LangSvcEntries_Thes *pEntry = aSvcMap[ nLanguage ].get();
+        if (pEntry)
+        {
+            pEntry->Clear();
+            pEntry->aSvcImplNames = rSvcImplNames;
+            pEntry->aSvcRefs = Sequence< Reference < XThesaurus > >( nLen );
+        }
+        else
+        {
+            auto pTmpEntry = std::make_shared<LangSvcEntries_Thes>( rSvcImplNames );
+            pTmpEntry->aSvcRefs = Sequence< Reference < XThesaurus > >( nLen );
+            aSvcMap[ nLanguage ] = pTmpEntry;
+        }
+    }
+}
+
+
+Sequence< OUString >
+    ThesaurusDispatcher::GetServiceList( const Locale &rLocale ) const
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    Sequence< OUString > aRes;
+
+    // search for entry with that language and use data from that
+    LanguageType nLanguage = LinguLocaleToLanguage( rLocale );
+    const ThesSvcByLangMap_t::const_iterator  aIt( aSvcMap.find( nLanguage ) );
+    const LangSvcEntries_Thes       *pEntry = aIt != aSvcMap.end() ? aIt->second.get() : nullptr;
+    if (pEntry)
+        aRes = pEntry->aSvcImplNames;
+
+    return aRes;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/source/thesdsp.hxx b/linguistic/source/thesdsp.hxx
new file mode 100644
index 000000000..80cafe29c
--- /dev/null
+++ b/linguistic/source/thesdsp.hxx
@@ -0,0 +1,92 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_SOURCE_THESDSP_HXX
+#define INCLUDED_LINGUISTIC_SOURCE_THESDSP_HXX
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/uno/Sequence.h>
+
+#include <com/sun/star/linguistic2/XLinguProperties.hpp>
+#include <com/sun/star/linguistic2/XThesaurus.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <linguistic/misc.hxx>
+
+#include <map>
+#include <memory>
+
+#include "defs.hxx"
+
+
+class ThesaurusDispatcher :
+    public cppu::WeakImplHelper< css::linguistic2::XThesaurus >,
+    public LinguDispatcher
+{
+    typedef std::shared_ptr< LangSvcEntries_Thes >                LangSvcEntries_Thes_Ptr_t;
+    typedef std::map< LanguageType, LangSvcEntries_Thes_Ptr_t >     ThesSvcByLangMap_t;
+    ThesSvcByLangMap_t      aSvcMap;
+
+    css::uno::Reference< css::linguistic2::XLinguProperties >     xPropSet;
+
+    ThesaurusDispatcher(const ThesaurusDispatcher &) = delete;
+    ThesaurusDispatcher & operator = (const ThesaurusDispatcher &) = delete;
+
+    inline const css::uno::Reference< css::linguistic2::XLinguProperties > &
+            GetPropSet();
+
+    void    ClearSvcList();
+
+public:
+    ThesaurusDispatcher();
+    virtual ~ThesaurusDispatcher() override;
+
+    // XSupportedLocales
+    virtual css::uno::Sequence< css::lang::Locale > SAL_CALL
+        getLocales() override;
+    virtual sal_Bool SAL_CALL
+        hasLocale( const css::lang::Locale& aLocale ) override;
+
+    // XThesaurus
+    virtual css::uno::Sequence< css::uno::Reference< css::linguistic2::XMeaning > > SAL_CALL
+        queryMeanings( const OUString& aTerm,
+                const css::lang::Locale& aLocale,
+                const css::uno::Sequence< ::css::beans::PropertyValue >& aProperties ) override;
+
+    // LinguDispatcher
+    virtual void
+        SetServiceList( const css::lang::Locale &rLocale,
+                const css::uno::Sequence< OUString > &rSvcImplNames ) override;
+    virtual css::uno::Sequence< OUString >
+        GetServiceList( const css::lang::Locale &rLocale ) const override;
+};
+
+
+inline const css::uno::Reference< css::linguistic2::XLinguProperties > &
+        ThesaurusDispatcher::GetPropSet()
+{
+    if (!xPropSet.is())
+        xPropSet = linguistic::GetLinguProperties();
+    return xPropSet;
+}
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/workben/exports.dxp b/linguistic/workben/exports.dxp
new file mode 100644
index 000000000..86214860d
--- /dev/null
+++ b/linguistic/workben/exports.dxp
@@ -0,0 +1,2 @@
+component_getFactory
+component_writeInfo
diff --git a/linguistic/workben/makefile.mk b/linguistic/workben/makefile.mk
new file mode 100644
index 000000000..5b9466817
--- /dev/null
+++ b/linguistic/workben/makefile.mk
@@ -0,0 +1,98 @@
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file incorporates work covered by the following license notice:
+#
+#   Licensed to the Apache Software Foundation (ASF) under one or more
+#   contributor license agreements. See the NOTICE file distributed
+#   with this work for additional information regarding copyright
+#   ownership. The ASF licenses this file to you under the Apache
+#   License, Version 2.0 (the "License"); you may not use this file
+#   except in compliance with the License. You may obtain a copy of
+#   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+#
+
+PRJ = ..
+
+PRJNAME = linguistic
+TARGET	= lex
+ENABLE_EXCEPTIONS=TRUE
+USE_DEFFILE=TRUE
+
+#----- Settings ---------------------------------------------------------
+
+.INCLUDE : settings.mk
+
+# --- Files --------------------------------------------------------
+
+UNOTYPES=\
+    com.sun.star.linguistic2.DictionaryEvent\
+    com.sun.star.linguistic2.DictionaryEventFlags\
+    com.sun.star.linguistic2.DictionaryListEvent\
+    com.sun.star.linguistic2.DictionaryListEventFlags\
+    com.sun.star.linguistic2.DictionaryType\
+    com.sun.star.linguistic2.LinguServiceEventFlags\
+    com.sun.star.linguistic2.SpellFailure\
+    com.sun.star.linguistic2.XDictionary\
+    com.sun.star.linguistic2.XDictionary1\
+    com.sun.star.linguistic2.XDictionaryEntry\
+    com.sun.star.linguistic2.XDictionaryEventListener\
+    com.sun.star.linguistic2.XDictionaryList\
+    com.sun.star.linguistic2.XDictionaryListEventListener\
+    com.sun.star.linguistic2.XHyphenatedWord\
+    com.sun.star.linguistic2.XHyphenator\
+    com.sun.star.linguistic2.XLinguServiceEventBroadcaster\
+    com.sun.star.linguistic2.XLinguServiceEventListener\
+    com.sun.star.linguistic2.XLinguServiceManager\
+    com.sun.star.linguistic2.XMeaning\
+    com.sun.star.linguistic2.XPossibleHyphens\
+    com.sun.star.linguistic2.XSearchableDictionaryList\
+    com.sun.star.linguistic2.XSpellAlternatives\
+    com.sun.star.linguistic2.XSpellChecker\
+    com.sun.star.linguistic2.XSupportedLocales\
+    com.sun.star.linguistic2.XThesaurus
+
+
+SLOFILES=	\
+        $(SLO)$/sprophelp.obj\
+        $(SLO)$/sreg.obj\
+        $(SLO)$/sspellimp.obj
+
+
+SHL1TARGET= $(TARGET)$(DLLPOSTFIX)
+
+SHL1STDLIBS= \
+        $(COMPHELPERLIB) 	 \
+        $(CPPULIB) 	 \
+        $(CPPUHELPERLIB) 	 \
+        $(TOOLSLIB)		\
+        $(SVTOOLLIB)	\
+        $(SVLLIB)		\
+        $(VCLLIB)		\
+        $(SFXLIB)		\
+        $(SALLIB)		\
+        $(UCBHELPERLIB)	\
+        $(UNOTOOLSLIB)	\
+        $(LNGLIB)
+
+# build DLL
+SHL1LIBS=		$(SLB)$/$(TARGET).lib
+SHL1IMPLIB=		i$(TARGET)
+SHL1DEPN=		$(SHL1LIBS)
+SHL1DEF=		$(MISC)$/$(SHL1TARGET).def
+.IF "$(OS)"!="MACOSX"
+SHL1VERSIONMAP=$(SOLARENV)/src/component.map
+.ENDIF
+
+# build DEF file
+DEF1NAME	 =$(SHL1TARGET)
+DEF1EXPORTFILE=	exports.dxp
+
+# --- Targets ------------------------------------------------------
+
+.INCLUDE : target.mk
+
diff --git a/linguistic/workben/sprophelp.cxx b/linguistic/workben/sprophelp.cxx
new file mode 100644
index 000000000..41542fec1
--- /dev/null
+++ b/linguistic/workben/sprophelp.cxx
@@ -0,0 +1,354 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <sal/macros.h>
+#include "linguistic/misc.hxx"
+
+#include "sprophelp.hxx"
+#include "linguistic/lngprops.hxx"
+
+#include <com/sun/star/linguistic2/LinguServiceEvent.hpp>
+#include <com/sun/star/linguistic2/LinguServiceEventFlags.hpp>
+#include <com/sun/star/linguistic2/XLinguServiceEventListener.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <osl/mutex.hxx>
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+PropertyChgHelper::PropertyChgHelper(
+        const Reference< XInterface > & rxSource,
+        Reference< XPropertySet > &rxPropSet,
+        const char *pPropNames[], sal_uInt16 nPropCount )
+    : aPropNames(nPropCount)
+    , xMyEvtObj(rxSource)
+    , aLngSvcEvtListeners(GetLinguMutex())
+    , xPropSet(rxPropSet)
+{
+    OUString *pName = aPropNames.getArray();
+    for (sal_Int32 i = 0;  i < nPropCount;  ++i)
+    {
+        pName[i] = OUString::createFromAscii( pPropNames[i] );
+    }
+}
+
+
+PropertyChgHelper::PropertyChgHelper( const PropertyChgHelper &rHelper ) :
+    aPropNames(rHelper.aPropNames),
+    xMyEvtObj(rHelper.xMyEvtObj),
+    aLngSvcEvtListeners (GetLinguMutex()),
+    xPropSet(rHelper.xPropSet)
+{
+    AddAsPropListener();
+
+}
+
+
+PropertyChgHelper::~PropertyChgHelper()
+{
+}
+
+
+void PropertyChgHelper::AddAsPropListener()
+{
+    if (xPropSet.is())
+    {
+        sal_Int32 nLen = aPropNames.getLength();
+        const OUString *pPropName = aPropNames.getConstArray();
+        for (sal_Int32 i = 0;  i < nLen;  ++i)
+        {
+            if (pPropName[i].getLength())
+                xPropSet->addPropertyChangeListener( pPropName[i], this );
+        }
+    }
+}
+
+void PropertyChgHelper::RemoveAsPropListener()
+{
+    if (xPropSet.is())
+    {
+        sal_Int32 nLen = aPropNames.getLength();
+        const OUString *pPropName = aPropNames.getConstArray();
+        for (sal_Int32 i = 0;  i < nLen;  ++i)
+        {
+            if (pPropName[i].getLength())
+                xPropSet->removePropertyChangeListener( pPropName[i], this );
+        }
+    }
+}
+
+
+void PropertyChgHelper::LaunchEvent( const LinguServiceEvent &rEvt )
+{
+    cppu::OInterfaceIteratorHelper aIt( aLngSvcEvtListeners );
+    while (aIt.hasMoreElements())
+    {
+        Reference< XLinguServiceEventListener > xRef( aIt.next(), UNO_QUERY );
+        if (xRef.is())
+            xRef->processLinguServiceEvent( rEvt );
+    }
+}
+
+
+void SAL_CALL PropertyChgHelper::disposing( const EventObject& rSource )
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    if (rSource.Source == xPropSet)
+    {
+        RemoveAsPropListener();
+        xPropSet = NULL;
+        aPropNames.realloc( 0 );
+    }
+}
+
+
+sal_Bool SAL_CALL
+    PropertyChgHelper::addLinguServiceEventListener(
+            const Reference< XLinguServiceEventListener >& rxListener )
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    sal_Bool bRes = sal_False;
+    if (rxListener.is())
+    {
+        sal_Int32   nCount = aLngSvcEvtListeners.getLength();
+        bRes = aLngSvcEvtListeners.addInterface( rxListener ) != nCount;
+    }
+    return bRes;
+}
+
+
+sal_Bool SAL_CALL
+    PropertyChgHelper::removeLinguServiceEventListener(
+            const Reference< XLinguServiceEventListener >& rxListener )
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    sal_Bool bRes = sal_False;
+    if (rxListener.is())
+    {
+        sal_Int32   nCount = aLngSvcEvtListeners.getLength();
+        bRes = aLngSvcEvtListeners.removeInterface( rxListener ) != nCount;
+    }
+    return bRes;
+}
+
+
+static const char *aSP[] =
+{
+    UPN_IS_GERMAN_PRE_REFORM,
+    UPN_IS_IGNORE_CONTROL_CHARACTERS,
+    UPN_IS_USE_DICTIONARY_LIST,
+    UPN_IS_SPELL_UPPER_CASE,
+    UPN_IS_SPELL_WITH_DIGITS,
+    UPN_IS_SPELL_CAPITALIZATION
+};
+
+
+PropertyHelper_Spell::PropertyHelper_Spell(
+        const Reference< XInterface > & rxSource,
+        Reference< XPropertySet > &rxPropSet ) :
+    PropertyChgHelper   ( rxSource, rxPropSet, aSP, SAL_N_ELEMENTS(aSP) )
+{
+    SetDefault();
+    sal_Int32 nLen = GetPropNames().getLength();
+    if (rxPropSet.is() && nLen)
+    {
+        const OUString *pPropName = GetPropNames().getConstArray();
+        for (sal_Int32 i = 0;  i < nLen;  ++i)
+        {
+            sal_Bool *pbVal     = NULL,
+                 *pbResVal  = NULL;
+
+            if (OUString( UPN_IS_GERMAN_PRE_REFORM ) == pPropName[i])
+            {
+                pbVal    = &bIsGermanPreReform;
+                pbResVal = &bResIsGermanPreReform;
+            }
+            else if (OUString( UPN_IS_IGNORE_CONTROL_CHARACTERS ) == pPropName[i])
+            {
+                pbVal    = &bIsIgnoreControlCharacters;
+                pbResVal = &bResIsIgnoreControlCharacters;
+            }
+            else if (OUString( UPN_IS_USE_DICTIONARY_LIST ) == pPropName[i])
+            {
+                pbVal    = &bIsUseDictionaryList;
+                pbResVal = &bResIsUseDictionaryList;
+            }
+            else if (OUString( UPN_IS_SPELL_UPPER_CASE ) == pPropName[i])
+            {
+                pbVal    = &bIsSpellUpperCase;
+                pbResVal = &bResIsSpellUpperCase;
+            }
+            else if (OUString( UPN_IS_SPELL_WITH_DIGITS ) == pPropName[i])
+            {
+                pbVal    = &bIsSpellWithDigits;
+                pbResVal = &bResIsSpellWithDigits;
+            }
+            else if (OUString( UPN_IS_SPELL_CAPITALIZATION ) == pPropName[i])
+            {
+                pbVal    = &bIsSpellCapitalization;
+                pbResVal = &bResIsSpellCapitalization;
+            }
+
+            if (pbVal && pbResVal)
+            {
+                rxPropSet->getPropertyValue( pPropName[i] ) >>= *pbVal;
+                *pbResVal = *pbVal;
+            }
+        }
+    }
+}
+
+
+PropertyHelper_Spell::~PropertyHelper_Spell()
+{
+}
+
+
+void PropertyHelper_Spell::SetDefault()
+{
+    bResIsGermanPreReform           = bIsGermanPreReform            = sal_False;
+    bResIsIgnoreControlCharacters   = bIsIgnoreControlCharacters    = sal_True;
+    bResIsUseDictionaryList         = bIsUseDictionaryList          = sal_True;
+    bResIsSpellUpperCase            = bIsSpellUpperCase             = sal_False;
+    bResIsSpellWithDigits           = bIsSpellWithDigits            = sal_False;
+    bResIsSpellCapitalization       = bIsSpellCapitalization        = sal_True;
+}
+
+
+void SAL_CALL
+    PropertyHelper_Spell::propertyChange( const PropertyChangeEvent& rEvt )
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (GetPropSet().is()  &&  rEvt.Source == GetPropSet())
+    {
+        sal_Int16 nLngSvcFlags = 0;
+        sal_Bool bSCWA = sal_False, // SPELL_CORRECT_WORDS_AGAIN ?
+             bSWWA = sal_False; // SPELL_WRONG_WORDS_AGAIN ?
+
+        sal_Bool *pbVal = NULL;
+        switch (rEvt.PropertyHandle)
+        {
+            case UPH_IS_IGNORE_CONTROL_CHARACTERS :
+            {
+                pbVal = &bIsIgnoreControlCharacters;
+                break;
+            }
+            case UPH_IS_GERMAN_PRE_REFORM         :
+            {
+                pbVal = &bIsGermanPreReform;
+                bSCWA = bSWWA = sal_True;
+                break;
+            }
+            case UPH_IS_USE_DICTIONARY_LIST       :
+            {
+                pbVal = &bIsUseDictionaryList;
+                bSCWA = bSWWA = sal_True;
+                break;
+            }
+            case UPH_IS_SPELL_UPPER_CASE          :
+            {
+                pbVal = &bIsSpellUpperCase;
+                bSCWA = sal_False == *pbVal;    // sal_False->sal_True change?
+                bSWWA = !bSCWA;             // sal_True->sal_False change?
+                break;
+            }
+            case UPH_IS_SPELL_WITH_DIGITS         :
+            {
+                pbVal = &bIsSpellWithDigits;
+                bSCWA = sal_False == *pbVal;    // sal_False->sal_True change?
+                bSWWA = !bSCWA;             // sal_True->sal_False change?
+                break;
+            }
+            case UPH_IS_SPELL_CAPITALIZATION      :
+            {
+                pbVal = &bIsSpellCapitalization;
+                bSCWA = sal_False == *pbVal;    // sal_False->sal_True change?
+                bSWWA = !bSCWA;             // sal_True->sal_False change?
+                break;
+            }
+            default:
+                OSL_FAIL( "unknown property" );
+        }
+        if (pbVal)
+            rEvt.NewValue >>= *pbVal;
+
+        if (bSCWA)
+            nLngSvcFlags |= LinguServiceEventFlags::SPELL_CORRECT_WORDS_AGAIN;
+        if (bSWWA)
+            nLngSvcFlags |= LinguServiceEventFlags::SPELL_WRONG_WORDS_AGAIN;
+        if (nLngSvcFlags)
+        {
+            LinguServiceEvent aEvt( GetEvtObj(), nLngSvcFlags );
+            LaunchEvent( aEvt );
+        }
+    }
+}
+
+
+void PropertyHelper_Spell::SetTmpPropVals( const PropertyValues &rPropVals )
+{
+    // set return value to default value unless there is an
+    // explicitly supplied temporary value
+    bResIsGermanPreReform           = bIsGermanPreReform;
+    bResIsIgnoreControlCharacters   = bIsIgnoreControlCharacters;
+    bResIsUseDictionaryList         = bIsUseDictionaryList;
+    bResIsSpellUpperCase            = bIsSpellUpperCase;
+    bResIsSpellWithDigits           = bIsSpellWithDigits;
+    bResIsSpellCapitalization       = bIsSpellCapitalization;
+
+    sal_Int32 nLen = rPropVals.getLength();
+    if (nLen)
+    {
+        const PropertyValue *pVal = rPropVals.getConstArray();
+        for (sal_Int32 i = 0;  i < nLen;  ++i)
+        {
+            sal_Bool *pbResVal = NULL;
+            switch (pVal[i].Handle)
+            {
+                case UPH_IS_GERMAN_PRE_REFORM         : pbResVal = &bResIsGermanPreReform; break;
+                case UPH_IS_IGNORE_CONTROL_CHARACTERS : pbResVal = &bResIsIgnoreControlCharacters; break;
+                case UPH_IS_USE_DICTIONARY_LIST       : pbResVal = &bResIsUseDictionaryList; break;
+                case UPH_IS_SPELL_UPPER_CASE          : pbResVal = &bResIsSpellUpperCase; break;
+                case UPH_IS_SPELL_WITH_DIGITS         : pbResVal = &bResIsSpellWithDigits; break;
+                case UPH_IS_SPELL_CAPITALIZATION      : pbResVal = &bResIsSpellCapitalization; break;
+                default:
+                    OSL_FAIL( "unknown property" );
+            }
+            if (pbResVal)
+                pVal[i].Value >>= *pbResVal;
+        }
+    }
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/workben/sprophelp.hxx b/linguistic/workben/sprophelp.hxx
new file mode 100644
index 000000000..55fd48198
--- /dev/null
+++ b/linguistic/workben/sprophelp.hxx
@@ -0,0 +1,155 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_WORKBEN_SPROPHELP_HXX
+#define INCLUDED_LINGUISTIC_WORKBEN_SPROPHELP_HXX
+
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/interfacecontainer.h>
+#include <com/sun/star/beans/XPropertyChangeListener.hpp>
+#include <com/sun/star/beans/PropertyValues.hpp>
+#include <com/sun/star/linguistic2/XLinguServiceEventBroadcaster.hpp>
+
+namespace com::sun::star::beans {
+    class   XPropertySet;
+}}}};
+
+namespace com::sun::star::linguistic2 {
+    struct  LinguServiceEvent;
+}}}};
+
+
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::beans;
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::linguistic2;
+
+// PropertyChgHelper
+// virtual base class for all XPropertyChangeListener members of the
+// various lingu services.
+// Only propertyChange needs to be implemented.
+
+class PropertyChgHelper :
+    public cppu::WeakImplHelper
+    <
+        XPropertyChangeListener,
+        XLinguServiceEventBroadcaster
+    >
+{
+    Sequence< OUString >                aPropNames;
+    Reference< XInterface >             xMyEvtObj;
+    ::comphelper::OInterfaceContainerHelper2   aLngSvcEvtListeners;
+    Reference< XPropertySet >           xPropSet;
+
+    // disallow use of copy-constructor and assignment-operator
+    PropertyChgHelper( const PropertyChgHelper & );
+    PropertyChgHelper & operator = ( const PropertyChgHelper & );
+
+public:
+    PropertyChgHelper(
+            const Reference< XInterface > &rxSource,
+            Reference< XPropertySet > &rxPropSet,
+            const char *pPropNames[], sal_uInt16 nPropCount );
+    virtual ~PropertyChgHelper();
+
+    // XEventListener
+    virtual void SAL_CALL
+        disposing( const EventObject& rSource )
+            throw(RuntimeException);
+
+    // XPropertyChangeListener
+    virtual void SAL_CALL
+        propertyChange( const PropertyChangeEvent& rEvt )
+            throw(RuntimeException) = 0;
+
+    // XLinguServiceEventBroadcaster
+    virtual sal_Bool SAL_CALL
+        addLinguServiceEventListener(
+                const Reference< XLinguServiceEventListener >& rxListener )
+            throw(RuntimeException);
+    virtual sal_Bool SAL_CALL
+        removeLinguServiceEventListener(
+                const Reference< XLinguServiceEventListener >& rxListener )
+            throw(RuntimeException);
+
+    // non UNO functions
+    void    AddAsPropListener();
+    void    RemoveAsPropListener();
+    void    LaunchEvent( const LinguServiceEvent& rEvt );
+
+    const Sequence< OUString > &
+            GetPropNames() const    { return aPropNames; }
+    const Reference< XPropertySet > &
+            GetPropSet() const      { return xPropSet; }
+    const Reference< XInterface > &
+            GetEvtObj() const       { return xMyEvtObj; }
+};
+
+
+class PropertyHelper_Spell :
+    public PropertyChgHelper
+{
+    // default values
+    sal_Bool    bIsGermanPreReform;
+    sal_Bool    bIsIgnoreControlCharacters;
+    sal_Bool    bIsUseDictionaryList;
+    sal_Bool    bIsSpellUpperCase;
+    sal_Bool    bIsSpellWithDigits;
+    sal_Bool    bIsSpellCapitalization;
+
+    // return values, will be set to default value or current temporary value
+    sal_Bool    bResIsGermanPreReform;
+    sal_Bool    bResIsIgnoreControlCharacters;
+    sal_Bool    bResIsUseDictionaryList;
+    sal_Bool    bResIsSpellUpperCase;
+    sal_Bool    bResIsSpellWithDigits;
+    sal_Bool    bResIsSpellCapitalization;
+
+
+    // disallow use of copy-constructor and assignment-operator
+    PropertyHelper_Spell( const PropertyHelper_Spell & );
+    PropertyHelper_Spell & operator = ( const PropertyHelper_Spell & );
+
+    void    SetDefault();
+
+public:
+    PropertyHelper_Spell(
+            const Reference< XInterface > &rxSource,
+            Reference< XPropertySet > &rxPropSet );
+    virtual ~PropertyHelper_Spell();
+
+    // XPropertyChangeListener
+    virtual void SAL_CALL
+        propertyChange( const PropertyChangeEvent& rEvt )
+            throw(RuntimeException);
+
+    void    SetTmpPropVals( const PropertyValues &rPropVals );
+
+    sal_Bool    IsGermanPreReform() const           { return bResIsGermanPreReform; }
+    sal_Bool    IsIgnoreControlCharacters() const   { return bResIsIgnoreControlCharacters; }
+    sal_Bool    IsUseDictionaryList() const         { return bResIsUseDictionaryList; }
+    sal_Bool    IsSpellUpperCase() const            { return bResIsSpellUpperCase; }
+    sal_Bool    IsSpellWithDigits() const           { return bResIsSpellWithDigits; }
+    sal_Bool    IsSpellCapitalization() const       { return bResIsSpellCapitalization; }
+};
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/workben/sreg.cxx b/linguistic/workben/sreg.cxx
new file mode 100644
index 000000000..64af55925
--- /dev/null
+++ b/linguistic/workben/sreg.cxx
@@ -0,0 +1,63 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <cppuhelper/factory.hxx>
+#include <rtl/string.hxx>
+
+#include <com/sun/star/registry/XRegistryKey.hpp>
+
+using namespace com::sun::star::lang;
+using namespace com::sun::star::registry;
+
+// declaration of external RegEntry-functions defined by the service objects
+
+extern sal_Bool SAL_CALL SpellChecker_writeInfo(
+    void * /*pServiceManager*/, XRegistryKey * pRegistryKey );
+
+extern void * SAL_CALL SpellChecker_getFactory(
+    const char * pImplName,
+    XMultiServiceFactory * pServiceManager,
+    void * /*pRegistryKey*/ );
+
+// definition of the two functions that are used to provide the services
+
+extern "C"
+{
+
+sal_Bool SAL_CALL component_writeInfo(
+    void * pServiceManager, XRegistryKey * pRegistryKey )
+{
+    return SpellChecker_writeInfo( pServiceManager, pRegistryKey );
+}
+
+SAL_DLLPUBLIC_EXPORT void * SAL_CALL component_getFactory(
+    const char * pImplName, void * pServiceManager, void * pRegistryKey )
+{
+    void * pRet = SpellChecker_getFactory(
+            pImplName,
+            reinterpret_cast< XMultiServiceFactory * >( pServiceManager ),
+            pRegistryKey );
+
+    return pRet;
+}
+
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/workben/sspellimp.cxx b/linguistic/workben/sspellimp.cxx
new file mode 100644
index 000000000..04c5d03d6
--- /dev/null
+++ b/linguistic/workben/sspellimp.cxx
@@ -0,0 +1,476 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/linguistic2/XSearchableDictionaryList.hpp>
+#include <com/sun/star/linguistic2/SpellFailure.hpp>
+#include <com/sun/star/registry/XRegistryKey.hpp>
+#include <cppuhelper/factory.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <tools/debug.hxx>
+#include <osl/mutex.hxx>
+
+#include <sspellimp.hxx>
+
+#include "linguistic/lngprops.hxx"
+#include "linguistic/spelldta.hxx"
+
+using namespace utl;
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::beans;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::linguistic2;
+using namespace linguistic;
+
+
+sal_Bool operator == ( const Locale &rL1, const Locale &rL2 )
+{
+    return  rL1.Language ==  rL2.Language   &&
+            rL1.Country  ==  rL2.Country    &&
+            rL1.Variant  ==  rL2.Variant;
+}
+
+
+SpellChecker::SpellChecker() :
+    aEvtListeners   ( GetLinguMutex() ),
+    pPropHelper(NULL),
+    bDisposing(sal_False)
+{
+}
+
+
+SpellChecker::~SpellChecker()
+{
+    if (pPropHelper)
+        pPropHelper->RemoveAsPropListener();
+}
+
+
+PropertyHelper_Spell & SpellChecker::GetPropHelper_Impl()
+{
+    if (!pPropHelper)
+    {
+        Reference< XLinguProperties >   xPropSet = GetLinguProperties();
+
+        pPropHelper = new PropertyHelper_Spell( (XSpellChecker *) this, xPropSet );
+        xPropHelper = pPropHelper;
+        pPropHelper->AddAsPropListener();   //! after a reference is established
+    }
+    return *pPropHelper;
+}
+
+
+Sequence< Locale > SAL_CALL SpellChecker::getLocales()
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!aSuppLocales.getLength())
+    {
+        aSuppLocales.realloc( 3 );
+        Locale *pLocale = aSuppLocales.getArray();
+        pLocale[0] = Locale( "en", "US", OUString() );
+        pLocale[1] = Locale( "de", "DE", OUString() );
+        pLocale[2] = Locale( "de", "CH", OUString() );
+    }
+
+    return aSuppLocales;
+}
+
+
+sal_Bool SAL_CALL SpellChecker::hasLocale(const Locale& rLocale)
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    sal_Bool bRes = sal_False;
+    if (!aSuppLocales.getLength())
+        getLocales();
+    sal_Int32 nLen = aSuppLocales.getLength();
+    for (sal_Int32 i = 0;  i < nLen;  ++i)
+    {
+        const Locale *pLocale = aSuppLocales.getConstArray();
+        if (rLocale == pLocale[i])
+        {
+            bRes = sal_True;
+            break;
+        }
+    }
+    return bRes;
+}
+
+
+sal_Int16 SpellChecker::GetSpellFailure( const OUString &rWord, const Locale & )
+{
+    // Checks whether a word is OK in a given language (Locale) or not, and
+    // provides a failure type for the incorrect ones.
+    // - words with "liss" (case sensitive) as substring will be negative.
+    // - words with 'x' or 'X' will have incorrect spelling.
+    // - words with 's' or 'S' as first letter will have the wrong caption.
+    // - all other words will be OK.
+
+    sal_Int16 nRes = -1;
+
+    String aTmp( rWord );
+    if (aTmp.Len())
+    {
+        if (-1 != aTmp.indexOf( "liss" ))
+        {
+            nRes = SpellFailure::IS_NEGATIVE_WORD;
+        }
+        else if (-1 != aTmp.indexOf( 'x' )  ||
+                 -1 != aTmp.indexOf( 'X' ))
+        {
+            nRes = SpellFailure::SPELLING_ERROR;
+        }
+        else
+        {
+            sal_Unicode cChar = aTmp.GetChar( 0 );
+            if (cChar == 's'  ||  cChar == 'S')
+                nRes = SpellFailure::CAPTION_ERROR;
+        }
+    }
+
+    return nRes;
+}
+
+
+sal_Bool SAL_CALL
+    SpellChecker::isValid( const OUString& rWord, const Locale& rLocale,
+            const PropertyValues& rProperties )
+        throw(IllegalArgumentException, RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+     if (rLocale == Locale()  ||  !rWord.getLength())
+        return sal_True;
+
+    if (!hasLocale( rLocale ))
+#ifdef LINGU_EXCEPTIONS
+        throw( IllegalArgumentException() );
+#else
+        return sal_True;
+#endif
+
+    // Get property values to be used.
+    // These are be the default values set in the SN_LINGU_PROPERTIES
+    // PropertySet which are overridden by the supplied ones from the
+    // last argument.
+    // You'll probably like to use a simpler solution than the provided
+    // one using the PropertyHelper_Spell.
+    PropertyHelper_Spell &rHelper = GetPropHelper();
+    rHelper.SetTmpPropVals( rProperties );
+
+    sal_Int16 nFailure = GetSpellFailure( rWord, rLocale );
+    if (nFailure != -1)
+    {
+        sal_Int16 nLang = LinguLocaleToLanguage( rLocale );
+        // postprocess result for errors that should be ignored
+        if (   (!rHelper.IsSpellUpperCase()  && IsUpper( rWord, nLang ))
+            || (!rHelper.IsSpellWithDigits() && HasDigits( rWord ))
+            || (!rHelper.IsSpellCapitalization()
+                &&  nFailure == SpellFailure::CAPTION_ERROR)
+        )
+            nFailure = -1;
+    }
+    return nFailure == -1;
+}
+
+
+Reference< XSpellAlternatives >
+    SpellChecker::GetProposals( const OUString &rWord, const Locale &rLocale )
+{
+    // Retrieves the return values for the 'spell' function call in case
+    // of a misspelled word.
+    // Especially it may give a list of suggested (correct) words:
+    // - a "liss" substring will be replaced by "liz".
+    // - 'x' or 'X' will be replaced by 'u' or 'U' for the first proposal
+    //   and they will be removed from the word for the second proposal.
+    // - 's' or 'S' as first letter will be changed to the other caption.
+
+    Reference< XSpellAlternatives > xRes;
+
+    String aTmp( rWord );
+    if (aTmp.Len())
+    {
+        sal_Int16 nLang = LinguLocaleToLanguage( rLocale );
+
+        if (-1 != aTmp.indexOf( "liss" ))
+        {
+            aTmp.SearchAndReplaceAllAscii( "liss", "liz" );
+            xRes = new SpellAlternatives( aTmp, nLang,
+                        SpellFailure::IS_NEGATIVE_WORD, css::uno::Sequence< OUString >() );
+        }
+        else if (-1 != aTmp.indexOf( 'x' )  ||
+                 -1 != aTmp.indexOf( 'X' ))
+        {
+            Sequence< OUString > aStr( 2 );
+            OUString *pStr = aStr.getArray();
+            String  aAlt1( aTmp ),
+                    aAlt2( aTmp );
+            aAlt1.SearchAndReplaceAll( 'x', 'u');
+            aAlt1.SearchAndReplaceAll( 'X', 'U');
+            aAlt2 = aAlt2.replaceAll("x", "").replaceAll("X", "");
+            pStr[0] = aAlt1;
+            pStr[1] = aAlt2;
+
+            SpellAlternatives *pAlt = new SpellAlternatives;
+            pAlt->SetWordLanguage( aTmp, nLang );
+            pAlt->SetFailureType( SpellFailure::SPELLING_ERROR );
+            pAlt->SetAlternatives( aStr );
+
+            xRes = pAlt;
+        }
+        else
+        {
+            sal_Unicode cChar = aTmp.GetChar( 0 );
+            if (cChar == 's'  ||  cChar == 'S')
+            {
+                sal_Unicode cNewChar = cChar == 's' ?
+                        'S': 's';
+                aTmp.GetBufferAccess()[0] = cNewChar;
+                xRes = new SpellAlternatives( aTmp, nLang,
+                        SpellFailure::CAPTION_ERROR, css::uno::Sequence< OUString >() );
+            }
+        }
+    }
+
+    return xRes;
+}
+
+
+Reference< XSpellAlternatives > SAL_CALL
+    SpellChecker::spell( const OUString& rWord, const Locale& rLocale,
+            const PropertyValues& rProperties )
+        throw(IllegalArgumentException, RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+     if (rLocale == Locale()  ||  !rWord.getLength())
+        return NULL;
+
+    if (!hasLocale( rLocale ))
+#ifdef LINGU_EXCEPTIONS
+        throw( IllegalArgumentException() );
+#else
+        return NULL;
+#endif
+
+    Reference< XSpellAlternatives > xAlt;
+    if (!isValid( rWord, rLocale, rProperties ))
+    {
+        xAlt =  GetProposals( rWord, rLocale );
+    }
+    return xAlt;
+}
+
+
+Reference< XInterface > SAL_CALL SpellChecker_CreateInstance(
+            const Reference< XMultiServiceFactory > & )
+        throw(Exception)
+{
+    Reference< XInterface > xService = (cppu::OWeakObject*) new SpellChecker;
+    return xService;
+}
+
+
+sal_Bool SAL_CALL
+    SpellChecker::addLinguServiceEventListener(
+            const Reference< XLinguServiceEventListener >& rxLstnr )
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    sal_Bool bRes = sal_False;
+    if (!bDisposing && rxLstnr.is())
+    {
+        bRes = GetPropHelper().addLinguServiceEventListener( rxLstnr );
+    }
+    return bRes;
+}
+
+
+sal_Bool SAL_CALL
+    SpellChecker::removeLinguServiceEventListener(
+            const Reference< XLinguServiceEventListener >& rxLstnr )
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    sal_Bool bRes = sal_False;
+    if (!bDisposing && rxLstnr.is())
+    {
+        DBG_ASSERT( xPropHelper.is(), "xPropHelper non existent" );
+        bRes = GetPropHelper().removeLinguServiceEventListener( rxLstnr );
+    }
+    return bRes;
+}
+
+
+OUString SAL_CALL
+    SpellChecker::getServiceDisplayName( const Locale& )
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+    return OUString( "OpenOffice example spellchecker" );
+}
+
+
+void SAL_CALL
+    SpellChecker::initialize( const Sequence< Any >& rArguments )
+        throw(Exception, RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!pPropHelper)
+    {
+        sal_Int32 nLen = rArguments.getLength();
+        if (2 == nLen)
+        {
+            Reference< XPropertySet >   xPropSet;
+            rArguments.getConstArray()[0] >>= xPropSet;
+
+            //! Pointer allows for access of the non-UNO functions.
+            //! And the reference to the UNO-functions while increasing
+            //! the ref-count and will implicitly free the memory
+            //! when the object is no longer used.
+            pPropHelper = new PropertyHelper_Spell( (XSpellChecker *) this, xPropSet );
+            xPropHelper = pPropHelper;
+            pPropHelper->AddAsPropListener();   //! after a reference is established
+        }
+        else
+            OSL_FAIL( "wrong number of arguments in sequence" );
+    }
+}
+
+
+void SAL_CALL
+    SpellChecker::dispose()
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bDisposing)
+    {
+        bDisposing = sal_True;
+        EventObject aEvtObj( (XSpellChecker *) this );
+        aEvtListeners.disposeAndClear( aEvtObj );
+    }
+}
+
+
+void SAL_CALL
+    SpellChecker::addEventListener( const Reference< XEventListener >& rxListener )
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bDisposing && rxListener.is())
+        aEvtListeners.addInterface( rxListener );
+}
+
+
+void SAL_CALL
+    SpellChecker::removeEventListener( const Reference< XEventListener >& rxListener )
+        throw(RuntimeException)
+{
+    MutexGuard  aGuard( GetLinguMutex() );
+
+    if (!bDisposing && rxListener.is())
+        aEvtListeners.removeInterface( rxListener );
+}
+
+
+// Service specific part
+
+OUString SAL_CALL SpellChecker::getImplementationName()
+        throw(RuntimeException)
+{
+    return getImplementationName_Static();
+}
+
+
+sal_Bool SAL_CALL SpellChecker::supportsService( const OUString& ServiceName )
+        throw(RuntimeException)
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+Sequence< OUString > SAL_CALL SpellChecker::getSupportedServiceNames()
+        throw(RuntimeException)
+{
+    return getSupportedServiceNames_Static();
+}
+
+
+Sequence< OUString > SpellChecker::getSupportedServiceNames_Static()
+        throw()
+{
+    Sequence< OUString > aSNS { SN_SPELLCHECKER };
+    return aSNS;
+}
+
+
+sal_Bool SAL_CALL SpellChecker_writeInfo(
+            void * /*pServiceManager*/, registry::XRegistryKey * pRegistryKey )
+{
+    try
+    {
+        OUString aImpl( "/" + SpellChecker::getImplementationName_Static().getStr() +
+            "/UNO/SERVICES" );
+
+        Reference< registry::XRegistryKey > xNewKey =
+                pRegistryKey->createKey( aImpl );
+        Sequence< OUString > aServices =
+                SpellChecker::getSupportedServiceNames_Static();
+        for( sal_Int32 i = 0; i < aServices.getLength(); i++ )
+            xNewKey->createKey( aServices.getConstArray()[i] );
+
+        return sal_True;
+    }
+    catch(Exception &)
+    {
+        return sal_False;
+    }
+}
+
+
+void * SAL_CALL SpellChecker_getFactory( const char * pImplName,
+            XMultiServiceFactory * pServiceManager, void *  )
+{
+    void * pRet = 0;
+    if ( SpellChecker::getImplementationName_Static().equalsAscii( pImplName ) )
+    {
+        Reference< XSingleServiceFactory > xFactory =
+            cppu::createOneInstanceFactory(
+                pServiceManager,
+                SpellChecker::getImplementationName_Static(),
+                SpellChecker_CreateInstance,
+                SpellChecker::getSupportedServiceNames_Static());
+        // acquire, because we return an interface pointer instead of a reference
+        xFactory->acquire();
+        pRet = xFactory.get();
+    }
+    return pRet;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/linguistic/workben/sspellimp.hxx b/linguistic/workben/sspellimp.hxx
new file mode 100644
index 000000000..f07674ca1
--- /dev/null
+++ b/linguistic/workben/sspellimp.hxx
@@ -0,0 +1,157 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_LINGUISTIC_WORKBEN_SSPELLIMP_HXX
+#define INCLUDED_LINGUISTIC_WORKBEN_SSPELLIMP_HXX
+
+#include <cppuhelper/implbase.hxx>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/lang/XServiceDisplayName.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/beans/PropertyValues.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/linguistic2/XSpellChecker.hpp>
+#include <com/sun/star/linguistic2/XSearchableDictionaryList.hpp>
+#include <com/sun/star/linguistic2/XLinguServiceEventBroadcaster.hpp>
+
+#include "linguistic/misc.hxx"
+#include "sprophelp.hxx"
+
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::beans;
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::linguistic2;
+
+
+class SpellChecker :
+    public cppu::WeakImplHelper
+    <
+        XSpellChecker,
+        XLinguServiceEventBroadcaster,
+        XInitialization,
+        XComponent,
+        XServiceInfo,
+        XServiceDisplayName
+    >
+{
+    Sequence< Locale >                      aSuppLocales;
+    ::comphelper::OInterfaceContainerHelper2       aEvtListeners;
+    Reference< XPropertyChangeListener >    xPropHelper;
+    PropertyHelper_Spell *                  pPropHelper;
+    sal_Bool                                    bDisposing;
+
+    // disallow copy-constructor and assignment-operator for now
+    SpellChecker(const SpellChecker &);
+    SpellChecker & operator = (const SpellChecker &);
+
+    PropertyHelper_Spell &  GetPropHelper_Impl();
+    PropertyHelper_Spell &  GetPropHelper()
+    {
+        return pPropHelper ? *pPropHelper : GetPropHelper_Impl();
+    }
+
+    sal_Int16   GetSpellFailure( const OUString &rWord, const Locale &rLocale );
+    Reference< XSpellAlternatives >
+            GetProposals( const OUString &rWord, const Locale &rLocale );
+
+public:
+    SpellChecker();
+    virtual ~SpellChecker();
+
+    // XSupportedLocales (for XSpellChecker)
+    virtual Sequence< Locale > SAL_CALL
+        getLocales()
+            throw(RuntimeException);
+    virtual sal_Bool SAL_CALL
+        hasLocale( const Locale& rLocale )
+            throw(RuntimeException);
+
+    // XSpellChecker
+    virtual sal_Bool SAL_CALL
+        isValid( const OUString& rWord, const Locale& rLocale,
+                const PropertyValues& rProperties )
+            throw(IllegalArgumentException,
+                  RuntimeException);
+    virtual Reference< XSpellAlternatives > SAL_CALL
+        spell( const OUString& rWord, const Locale& rLocale,
+                const PropertyValues& rProperties )
+            throw(IllegalArgumentException,
+                  RuntimeException);
+
+    // XLinguServiceEventBroadcaster
+    virtual sal_Bool SAL_CALL
+        addLinguServiceEventListener(
+            const Reference< XLinguServiceEventListener >& rxLstnr )
+            throw(RuntimeException);
+    virtual sal_Bool SAL_CALL
+        removeLinguServiceEventListener(
+            const Reference< XLinguServiceEventListener >& rxLstnr )
+            throw(RuntimeException);
+
+    // XServiceDisplayName
+    virtual OUString SAL_CALL
+        getServiceDisplayName( const Locale& rLocale )
+            throw(RuntimeException);
+
+    // XInitialization
+    virtual void SAL_CALL
+        initialize( const Sequence< Any >& rArguments )
+            throw(Exception, RuntimeException);
+
+    // XComponent
+    virtual void SAL_CALL
+        dispose()
+            throw(RuntimeException);
+    virtual void SAL_CALL
+        addEventListener( const Reference< XEventListener >& rxListener )
+            throw(RuntimeException);
+    virtual void SAL_CALL
+        removeEventListener( const Reference< XEventListener >& rxListener )
+            throw(RuntimeException);
+
+    // Service specific part
+
+    // XServiceInfo
+    virtual OUString SAL_CALL
+        getImplementationName()
+            throw(RuntimeException);
+    virtual sal_Bool SAL_CALL
+        supportsService( const OUString& rServiceName )
+            throw(RuntimeException);
+    virtual Sequence< OUString > SAL_CALL
+        getSupportedServiceNames()
+            throw(RuntimeException);
+
+
+    static inline OUString
+        getImplementationName_Static() throw();
+    static Sequence< OUString >
+        getSupportedServiceNames_Static() throw();
+};
+
+inline OUString SpellChecker::getImplementationName_Static() throw()
+{
+    return OUString( "com.sun.star.lingu.examples.SpellChecker" );
+}
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */