1 files changed, 161 insertions, 0 deletions
diff --git a/sw/source/core/doc/swstylemanager.cxx b/sw/source/core/doc/swstylemanager.cxx
new file mode 100644
index 000000000..eec167202
--- /dev/null
+++ b/sw/source/core/doc/swstylemanager.cxx
@@ -0,0 +1,161 @@
+/* -*- 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 "swstylemanager.hxx"
+#include <svl/stylepool.hxx>
+#include <istyleaccess.hxx>
+#include <unordered_map>
+#include <osl/diagnose.h>
+
+typedef std::unordered_map< OUString,
+                            std::shared_ptr<SfxItemSet> > SwStyleNameCache;
+
+namespace {
+
+class SwStyleCache
+{
+    SwStyleNameCache mMap;
+public:
+    SwStyleCache() {}
+    void addStyleName( const std::shared_ptr<SfxItemSet>& pStyle )
+        { mMap[ StylePool::nameOf(pStyle) ] = pStyle; }
+    void addCompletePool( StylePool& rPool );
+    std::shared_ptr<SfxItemSet> getByName( const OUString& rName ) { return mMap[rName]; }
+};
+
+}
+
+void SwStyleCache::addCompletePool( StylePool& rPool )
+{
+    std::unique_ptr<IStylePoolIteratorAccess> pIter = rPool.createIterator();
+    std::shared_ptr<SfxItemSet> pStyle = pIter->getNext();
+    while( pStyle )
+    {
+        OUString aName( StylePool::nameOf(pStyle) );
+        mMap[ aName ] = pStyle;
+        pStyle = pIter->getNext();
+    }
+}
+
+namespace {
+
+class SwStyleManager : public IStyleAccess
+{
+    StylePool m_aAutoCharPool;
+    StylePool m_aAutoParaPool;
+    std::unique_ptr<SwStyleCache> mpCharCache;
+    std::unique_ptr<SwStyleCache> mpParaCache;
+
+public:
+    // accept empty item set for ignorable paragraph items.
+    explicit SwStyleManager(SfxItemSet const* pIgnorableParagraphItems)
+        : m_aAutoParaPool(pIgnorableParagraphItems)
+    {}
+    virtual std::shared_ptr<SfxItemSet> getAutomaticStyle( const SfxItemSet& rSet,
+                                                               IStyleAccess::SwAutoStyleFamily eFamily,
+                                                               const OUString* pParentName = nullptr ) override;
+    virtual std::shared_ptr<SfxItemSet> getByName( const OUString& rName,
+                                                               IStyleAccess::SwAutoStyleFamily eFamily ) override;
+    virtual void getAllStyles( std::vector<std::shared_ptr<SfxItemSet>> &rStyles,
+                                                               IStyleAccess::SwAutoStyleFamily eFamily ) override;
+    virtual std::shared_ptr<SfxItemSet> cacheAutomaticStyle( const SfxItemSet& rSet,
+                                                               SwAutoStyleFamily eFamily ) override;
+    virtual void clearCaches() override;
+};
+
+}
+
+std::unique_ptr<IStyleAccess> createStyleManager( SfxItemSet const * pIgnorableParagraphItems )
+{
+    return std::make_unique<SwStyleManager>( pIgnorableParagraphItems );
+}
+
+void SwStyleManager::clearCaches()
+{
+    mpCharCache.reset();
+    mpParaCache.reset();
+}
+
+std::shared_ptr<SfxItemSet> SwStyleManager::getAutomaticStyle( const SfxItemSet& rSet,
+                                                                   IStyleAccess::SwAutoStyleFamily eFamily,
+                                                                   const OUString* pParentName )
+{
+    StylePool& rAutoPool
+        = eFamily == IStyleAccess::AUTO_STYLE_CHAR ? m_aAutoCharPool : m_aAutoParaPool;
+    return rAutoPool.insertItemSet( rSet, pParentName );
+}
+
+std::shared_ptr<SfxItemSet> SwStyleManager::cacheAutomaticStyle( const SfxItemSet& rSet,
+                                                                   IStyleAccess::SwAutoStyleFamily eFamily )
+{
+    StylePool& rAutoPool
+        = eFamily == IStyleAccess::AUTO_STYLE_CHAR ? m_aAutoCharPool : m_aAutoParaPool;
+    std::shared_ptr<SfxItemSet> pStyle = rAutoPool.insertItemSet( rSet );
+    if (eFamily == IStyleAccess::AUTO_STYLE_CHAR)
+    {
+        if (!mpCharCache)
+            mpCharCache.reset(new SwStyleCache());
+        mpCharCache->addStyleName( pStyle );
+    }
+    else
+    {
+        if (!mpParaCache)
+            mpParaCache.reset(new SwStyleCache());
+        mpParaCache->addStyleName( pStyle );
+    }
+    return pStyle;
+}
+
+std::shared_ptr<SfxItemSet> SwStyleManager::getByName( const OUString& rName,
+                                                           IStyleAccess::SwAutoStyleFamily eFamily )
+{
+    StylePool& rAutoPool
+        = eFamily == IStyleAccess::AUTO_STYLE_CHAR ? m_aAutoCharPool : m_aAutoParaPool;
+    std::unique_ptr<SwStyleCache> &rpCache = eFamily == IStyleAccess::AUTO_STYLE_CHAR ? mpCharCache : mpParaCache;
+    if( !rpCache )
+        rpCache.reset(new SwStyleCache());
+    std::shared_ptr<SfxItemSet> pStyle = rpCache->getByName( rName );
+    if( !pStyle )
+    {
+        // Ok, ok, it's allowed to ask for uncached styles (from UNO) but it should not be done
+        // during loading a document
+        OSL_FAIL( "Don't ask for uncached styles" );
+        rpCache->addCompletePool( rAutoPool );
+        pStyle = rpCache->getByName( rName );
+    }
+    return pStyle;
+}
+
+void SwStyleManager::getAllStyles( std::vector<std::shared_ptr<SfxItemSet>> &rStyles,
+                                   IStyleAccess::SwAutoStyleFamily eFamily )
+{
+    StylePool& rAutoPool
+        = eFamily == IStyleAccess::AUTO_STYLE_CHAR ? m_aAutoCharPool : m_aAutoParaPool;
+    // setup <StylePool> iterator, which skips unused styles and ignorable items
+    std::unique_ptr<IStylePoolIteratorAccess> pIter = rAutoPool.createIterator( true, true );
+    std::shared_ptr<SfxItemSet> pStyle = pIter->getNext();
+    while( pStyle )
+    {
+        rStyles.push_back( pStyle );
+
+        pStyle = pIter->getNext();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */