1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 1999 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2001 Dirk Mueller (mueller (at) kde.org) 5 * (C) 2006 Alexey Proskuryakov (ap (at) 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/TreeScope.h" 35 #include "wtf/FastAllocBase.h" 36 #include "wtf/HashMap.h" 37 #include "wtf/ListHashSet.h" 38 #include "wtf/RefPtr.h" 39 #include "wtf/Vector.h" 40 #include "wtf/text/WTFString.h" 41 42 namespace blink { 43 44 class ContainerNode; 45 class Node; 46 class StyleSheetContents; 47 class StyleRuleFontFace; 48 49 class TreeScopeStyleSheetCollection : public StyleSheetCollection { 50 public: 51 void addStyleSheetCandidateNode(Node*, bool createdByParser); 52 void removeStyleSheetCandidateNode(Node*, ContainerNode* scopingNode); 53 bool hasStyleSheetCandidateNodes() const { return !m_styleSheetCandidateNodes.isEmpty(); } 54 55 bool usesRemUnits() const { return m_usesRemUnits; } 56 57 DocumentOrderedList& styleSheetCandidateNodes() { return m_styleSheetCandidateNodes; } 58 59 void clearMediaQueryRuleSetStyleSheets(); 60 void enableExitTransitionStylesheets(); 61 62 virtual void trace(Visitor*) OVERRIDE; 63 64 protected: 65 explicit TreeScopeStyleSheetCollection(TreeScope&); 66 67 Document& document() const { return treeScope().document(); } 68 TreeScope& treeScope() const { return *m_treeScope; } 69 70 enum StyleResolverUpdateType { 71 Reconstruct, 72 Reset, 73 Additive 74 }; 75 76 class StyleSheetChange { 77 STACK_ALLOCATED(); 78 public: 79 StyleResolverUpdateType styleResolverUpdateType; 80 bool requiresFullStyleRecalc; 81 WillBeHeapVector<RawPtrWillBeMember<const StyleRuleFontFace> > fontFaceRulesToRemove; 82 83 StyleSheetChange() 84 : styleResolverUpdateType(Reconstruct) 85 , requiresFullStyleRecalc(true) { } 86 }; 87 88 void analyzeStyleSheetChange(StyleResolverUpdateMode, const StyleSheetCollection&, StyleSheetChange&); 89 void updateUsesRemUnits(); 90 91 private: 92 static StyleResolverUpdateType compareStyleSheets(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >& oldStyleSheets, const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >& newStylesheets, WillBeHeapVector<RawPtrWillBeMember<StyleSheetContents> >& addedSheets); 93 bool activeLoadingStyleSheetLoaded(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >& newStyleSheets); 94 95 protected: 96 RawPtrWillBeMember<TreeScope> m_treeScope; 97 bool m_hadActiveLoadingStylesheet; 98 bool m_usesRemUnits; 99 100 DocumentOrderedList m_styleSheetCandidateNodes; 101 }; 102 103 } 104 105 #endif 106