1 /* 2 * (C) 1999-2003 Lars Knoll (knoll (at) kde.org) 3 * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21 #ifndef CSSStyleSheet_h 22 #define CSSStyleSheet_h 23 24 #include "core/css/CSSRule.h" 25 #include "core/css/StyleSheet.h" 26 #include "platform/heap/Handle.h" 27 #include "wtf/Noncopyable.h" 28 #include "wtf/text/TextPosition.h" 29 30 namespace WebCore { 31 32 class CSSCharsetRule; 33 class CSSImportRule; 34 class BisonCSSParser; 35 class CSSRule; 36 class CSSRuleList; 37 class CSSStyleSheet; 38 class CSSStyleSheetResource; 39 class Document; 40 class ExceptionState; 41 class MediaQuerySet; 42 class SecurityOrigin; 43 class StyleSheetContents; 44 45 enum StyleSheetUpdateType { 46 PartialRuleUpdate, 47 EntireStyleSheetUpdate 48 }; 49 50 class CSSStyleSheet FINAL : public StyleSheet { 51 public: 52 static PassRefPtrWillBeRawPtr<CSSStyleSheet> create(PassRefPtrWillBeRawPtr<StyleSheetContents>, CSSImportRule* ownerRule = 0); 53 static PassRefPtrWillBeRawPtr<CSSStyleSheet> create(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode); 54 static PassRefPtrWillBeRawPtr<CSSStyleSheet> createInline(Node*, const KURL&, const TextPosition& startPosition = TextPosition::minimumPosition(), const String& encoding = String()); 55 static PassRefPtrWillBeRawPtr<CSSStyleSheet> createInline(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode, const TextPosition& startPosition = TextPosition::minimumPosition()); 56 57 virtual ~CSSStyleSheet(); 58 59 virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE; 60 virtual Node* ownerNode() const OVERRIDE { return m_ownerNode; } 61 virtual MediaList* media() const OVERRIDE; 62 virtual String href() const OVERRIDE; 63 virtual String title() const OVERRIDE { return m_title; } 64 virtual bool disabled() const OVERRIDE { return m_isDisabled; } 65 virtual void setDisabled(bool) OVERRIDE; 66 67 PassRefPtrWillBeRawPtr<CSSRuleList> cssRules(); 68 unsigned insertRule(const String& rule, unsigned index, ExceptionState&); 69 unsigned insertRule(const String& rule, ExceptionState&); // Deprecated. 70 void deleteRule(unsigned index, ExceptionState&); 71 72 // IE Extensions 73 PassRefPtrWillBeRawPtr<CSSRuleList> rules(); 74 int addRule(const String& selector, const String& style, int index, ExceptionState&); 75 int addRule(const String& selector, const String& style, ExceptionState&); 76 void removeRule(unsigned index, ExceptionState& exceptionState) { deleteRule(index, exceptionState); } 77 78 // For CSSRuleList. 79 unsigned length() const; 80 CSSRule* item(unsigned index); 81 82 virtual void clearOwnerNode() OVERRIDE; 83 84 virtual CSSRule* ownerRule() const OVERRIDE { return m_ownerRule; } 85 virtual KURL baseURL() const OVERRIDE; 86 virtual bool isLoading() const OVERRIDE; 87 88 void clearOwnerRule() { m_ownerRule = nullptr; } 89 Document* ownerDocument() const; 90 MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); } 91 void setMediaQueries(PassRefPtrWillBeRawPtr<MediaQuerySet>); 92 void setTitle(const String& title) { m_title = title; } 93 94 class RuleMutationScope { 95 WTF_MAKE_NONCOPYABLE(RuleMutationScope); 96 STACK_ALLOCATED(); 97 public: 98 explicit RuleMutationScope(CSSStyleSheet*); 99 explicit RuleMutationScope(CSSRule*); 100 ~RuleMutationScope(); 101 102 private: 103 RawPtrWillBeMember<CSSStyleSheet> m_styleSheet; 104 }; 105 106 void willMutateRules(); 107 void didMutateRules(); 108 void didMutate(StyleSheetUpdateType = PartialRuleUpdate); 109 110 void clearChildRuleCSSOMWrappers(); 111 112 StyleSheetContents* contents() const { return m_contents.get(); } 113 114 bool isInline() const { return m_isInlineStylesheet; } 115 TextPosition startPositionInSource() const { return m_startPosition; } 116 117 bool sheetLoaded(); 118 bool loadCompleted() const { return m_loadCompleted; } 119 void startLoadingDynamicSheet(); 120 121 virtual void trace(Visitor*) OVERRIDE; 122 123 private: 124 CSSStyleSheet(PassRefPtrWillBeRawPtr<StyleSheetContents>, CSSImportRule* ownerRule); 125 CSSStyleSheet(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode, bool isInlineStylesheet, const TextPosition& startPosition); 126 127 virtual bool isCSSStyleSheet() const OVERRIDE { return true; } 128 virtual String type() const OVERRIDE { return "text/css"; } 129 130 void reattachChildRuleCSSOMWrappers(); 131 132 bool canAccessRules() const; 133 134 void setLoadCompleted(bool); 135 136 RefPtrWillBeMember<StyleSheetContents> m_contents; 137 bool m_isInlineStylesheet; 138 bool m_isDisabled; 139 String m_title; 140 RefPtrWillBeMember<MediaQuerySet> m_mediaQueries; 141 142 RawPtrWillBeMember<Node> m_ownerNode; 143 RawPtrWillBeMember<CSSRule> m_ownerRule; 144 145 TextPosition m_startPosition; 146 bool m_loadCompleted; 147 mutable RefPtrWillBeMember<MediaList> m_mediaCSSOMWrapper; 148 mutable WillBeHeapVector<RefPtrWillBeMember<CSSRule> > m_childRuleCSSOMWrappers; 149 mutable OwnPtrWillBeMember<CSSRuleList> m_ruleListCSSOMWrapper; 150 }; 151 152 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSStyleSheet* sheet) 153 : m_styleSheet(sheet) 154 { 155 if (m_styleSheet) 156 m_styleSheet->willMutateRules(); 157 } 158 159 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSRule* rule) 160 : m_styleSheet(rule ? rule->parentStyleSheet() : 0) 161 { 162 if (m_styleSheet) 163 m_styleSheet->willMutateRules(); 164 } 165 166 inline CSSStyleSheet::RuleMutationScope::~RuleMutationScope() 167 { 168 if (m_styleSheet) 169 m_styleSheet->didMutateRules(); 170 } 171 172 DEFINE_TYPE_CASTS(CSSStyleSheet, StyleSheet, sheet, sheet->isCSSStyleSheet(), sheet.isCSSStyleSheet()); 173 174 } // namespace 175 176 #endif 177
