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+/* -*- 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
+
+static const struct
+{
+ const char *pPropName;
+ 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& aFlushPropertie : aFlushProperties)
+ {
+ rPropSet->addPropertyChangeListener(
+ OUString::createFromAscii(aFlushPropertie.pPropName), xListener );
+ }
+ }
+}
+
+
+static void lcl_RemoveAsPropertyChangeListener(
+ const Reference< XPropertyChangeListener >& xListener,
+ Reference< XLinguProperties > const &rPropSet )
+{
+ if (xListener.is() && rPropSet.is())
+ {
+ for (auto& aFlushPropertie : aFlushProperties)
+ {
+ rPropSet->removePropertyChangeListener(
+ OUString::createFromAscii(aFlushPropertie.pPropName), 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 aEmpty;
+ aWordLists.swap( aEmpty );
+}
+
+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: */