1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) 4 * (C) 2001 Dirk Mueller (mueller@kde.org) 5 * (C) 2006 Alexey Proskuryakov (ap@webkit.org) 6 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved. 7 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) 8 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) 9 * Copyright (C) 2011 Google Inc. All rights reserved. 10 * 11 * This library is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU Library General Public 13 * License as published by the Free Software Foundation; either 14 * version 2 of the License, or (at your option) any later version. 15 * 16 * This library is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * Library General Public License for more details. 20 * 21 * You should have received a copy of the GNU Library General Public License 22 * along with this library; see the file COPYING.LIB. If not, write to 23 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 24 * Boston, MA 02110-1301, USA. 25 * 26 */ 27 28 #ifndef TreeScopeStyleSheetCollection_h 29 #define TreeScopeStyleSheetCollection_h 30 31 #include "core/dom/Document.h" 32 #include "core/dom/DocumentOrderedList.h" 33 #include "core/dom/StyleSheetCollection.h" 34 #include "core/dom/StyleSheetScopingNodeList.h" 35 #include "core/dom/TreeScope.h" 36 #include "wtf/FastAllocBase.h" 37 #include "wtf/HashMap.h" 38 #include "wtf/ListHashSet.h" 39 #include "wtf/RefPtr.h" 40 #include "wtf/Vector.h" 41 #include "wtf/text/WTFString.h" 42 43 namespace WebCore { 44 45 class ContainerNode; 46 class DocumentStyleSheetCollector; 47 class StyleEngine; 48 class Node; 49 class StyleSheetContents; 50 class StyleSheetList; 51 class StyleRuleFontFace; 52 53 class TreeScopeStyleSheetCollection : public StyleSheetCollection { 54 public: 55 void addStyleSheetCandidateNode(Node*, bool createdByParser); 56 void removeStyleSheetCandidateNode(Node*, ContainerNode* scopingNode); hasStyleSheetCandidateNodes()57 bool hasStyleSheetCandidateNodes() const { return !m_styleSheetCandidateNodes.isEmpty(); } 58 usesRemUnits()59 bool usesRemUnits() const { return m_usesRemUnits; } 60 styleSheetCandidateNodes()61 DocumentOrderedList& styleSheetCandidateNodes() { return m_styleSheetCandidateNodes; } scopingNodesForStyleScoped()62 DocumentOrderedList* scopingNodesForStyleScoped() { return m_scopingNodesForStyleScoped.scopingNodes(); } scopingNodesRemoved()63 ListHashSet<Node*, 4>* scopingNodesRemoved() { return m_scopingNodesForStyleScoped.scopingNodesRemoved(); } 64 65 void clearMediaQueryRuleSetStyleSheets(); 66 void enableExitTransitionStylesheets(); 67 trace(Visitor * visitor)68 virtual void trace(Visitor* visitor) OVERRIDE 69 { 70 StyleSheetCollection::trace(visitor); 71 } 72 73 protected: 74 explicit TreeScopeStyleSheetCollection(TreeScope&); 75 document()76 Document& document() const { return m_treeScope.document(); } 77 78 enum StyleResolverUpdateType { 79 Reconstruct, 80 Reset, 81 Additive 82 }; 83 84 class StyleSheetChange { 85 STACK_ALLOCATED(); 86 public: 87 StyleResolverUpdateType styleResolverUpdateType; 88 bool requiresFullStyleRecalc; 89 WillBeHeapVector<RawPtrWillBeMember<const StyleRuleFontFace> > fontFaceRulesToRemove; 90 StyleSheetChange()91 StyleSheetChange() 92 : styleResolverUpdateType(Reconstruct) 93 , requiresFullStyleRecalc(true) { } 94 }; 95 96 void analyzeStyleSheetChange(StyleResolverUpdateMode, const StyleSheetCollection&, StyleSheetChange&); 97 void resetAllRuleSetsInTreeScope(StyleResolver*); 98 void updateUsesRemUnits(); 99 100 private: 101 static StyleResolverUpdateType compareStyleSheets(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >& oldStyleSheets, const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >& newStylesheets, WillBeHeapVector<RawPtrWillBeMember<StyleSheetContents> >& addedSheets); 102 bool activeLoadingStyleSheetLoaded(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >& newStyleSheets); 103 104 protected: 105 TreeScope& m_treeScope; 106 bool m_hadActiveLoadingStylesheet; 107 bool m_usesRemUnits; 108 109 DocumentOrderedList m_styleSheetCandidateNodes; 110 StyleSheetScopingNodeList m_scopingNodesForStyleScoped; 111 }; 112 113 } 114 115 #endif 116 117