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 blink { 31 32 class CSSImportRule; 33 class CSSRule; 34 class CSSRuleList; 35 class CSSStyleSheet; 36 class Document; 37 class ExceptionState; 38 class MediaQuerySet; 39 class StyleSheetContents; 40 41 enum StyleSheetUpdateType { 42 PartialRuleUpdate, 43 EntireStyleSheetUpdate 44 }; 45 46 class CSSStyleSheet FINAL : public StyleSheet { 47 DEFINE_WRAPPERTYPEINFO(); 48 public: 49 static PassRefPtrWillBeRawPtr<CSSStyleSheet> create(PassRefPtrWillBeRawPtr<StyleSheetContents>, CSSImportRule* ownerRule = 0); 50 static PassRefPtrWillBeRawPtr<CSSStyleSheet> create(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode); 51 static PassRefPtrWillBeRawPtr<CSSStyleSheet> createInline(Node*, const KURL&, const TextPosition& startPosition = TextPosition::minimumPosition(), const String& encoding = String()); 52 static PassRefPtrWillBeRawPtr<CSSStyleSheet> createInline(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode, const TextPosition& startPosition = TextPosition::minimumPosition()); 53 54 virtual ~CSSStyleSheet(); 55 56 virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE; 57 virtual Node* ownerNode() const OVERRIDE { return m_ownerNode; } 58 virtual MediaList* media() const OVERRIDE; 59 virtual String href() const OVERRIDE; 60 virtual String title() const OVERRIDE { return m_title; } 61 virtual bool disabled() const OVERRIDE { return m_isDisabled; } 62 virtual void setDisabled(bool) OVERRIDE; 63 64 PassRefPtrWillBeRawPtr<CSSRuleList> cssRules(); 65 unsigned insertRule(const String& rule, unsigned index, ExceptionState&); 66 unsigned insertRule(const String& rule, ExceptionState&); // Deprecated. 67 void deleteRule(unsigned index, ExceptionState&); 68 69 // IE Extensions 70 PassRefPtrWillBeRawPtr<CSSRuleList> rules(); 71 int addRule(const String& selector, const String& style, int index, ExceptionState&); 72 int addRule(const String& selector, const String& style, ExceptionState&); 73 void removeRule(unsigned index, ExceptionState& exceptionState) { deleteRule(index, exceptionState); } 74 75 // For CSSRuleList. 76 unsigned length() const; 77 CSSRule* item(unsigned index); 78 79 virtual void clearOwnerNode() OVERRIDE; 80 81 virtual CSSRule* ownerRule() const OVERRIDE { return m_ownerRule; } 82 virtual KURL baseURL() const OVERRIDE; 83 virtual bool isLoading() const OVERRIDE; 84 85 void clearOwnerRule() { m_ownerRule = nullptr; } 86 Document* ownerDocument() const; 87 MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); } 88 void setMediaQueries(PassRefPtrWillBeRawPtr<MediaQuerySet>); 89 void setTitle(const String& title) { m_title = title; } 90 91 class RuleMutationScope { 92 WTF_MAKE_NONCOPYABLE(RuleMutationScope); 93 STACK_ALLOCATED(); 94 public: 95 explicit RuleMutationScope(CSSStyleSheet*); 96 explicit RuleMutationScope(CSSRule*); 97 ~RuleMutationScope(); 98 99 private: 100 RawPtrWillBeMember<CSSStyleSheet> m_styleSheet; 101 }; 102 103 void willMutateRules(); 104 void didMutateRules(); 105 void didMutate(StyleSheetUpdateType = PartialRuleUpdate); 106 107 void clearChildRuleCSSOMWrappers(); 108 109 StyleSheetContents* contents() const { return m_contents.get(); } 110 111 bool isInline() const { return m_isInlineStylesheet; } 112 TextPosition startPositionInSource() const { return m_startPosition; } 113 114 bool sheetLoaded(); 115 bool loadCompleted() const { return m_loadCompleted; } 116 void startLoadingDynamicSheet(); 117 118 virtual void trace(Visitor*) OVERRIDE; 119 120 private: 121 CSSStyleSheet(PassRefPtrWillBeRawPtr<StyleSheetContents>, CSSImportRule* ownerRule); 122 CSSStyleSheet(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode, bool isInlineStylesheet, const TextPosition& startPosition); 123 124 virtual bool isCSSStyleSheet() const OVERRIDE { return true; } 125 virtual String type() const OVERRIDE { return "text/css"; } 126 127 void reattachChildRuleCSSOMWrappers(); 128 129 bool canAccessRules() const; 130 131 void setLoadCompleted(bool); 132 133 RefPtrWillBeMember<StyleSheetContents> m_contents; 134 bool m_isInlineStylesheet; 135 bool m_isDisabled; 136 String m_title; 137 RefPtrWillBeMember<MediaQuerySet> m_mediaQueries; 138 139 RawPtrWillBeMember<Node> m_ownerNode; 140 RawPtrWillBeMember<CSSRule> m_ownerRule; 141 142 TextPosition m_startPosition; 143 bool m_loadCompleted; 144 mutable RefPtrWillBeMember<MediaList> m_mediaCSSOMWrapper; 145 mutable WillBeHeapVector<RefPtrWillBeMember<CSSRule> > m_childRuleCSSOMWrappers; 146 mutable OwnPtrWillBeMember<CSSRuleList> m_ruleListCSSOMWrapper; 147 }; 148 149 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSStyleSheet* sheet) 150 : m_styleSheet(sheet) 151 { 152 if (m_styleSheet) 153 m_styleSheet->willMutateRules(); 154 } 155 156 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSRule* rule) 157 : m_styleSheet(rule ? rule->parentStyleSheet() : 0) 158 { 159 if (m_styleSheet) 160 m_styleSheet->willMutateRules(); 161 } 162 163 inline CSSStyleSheet::RuleMutationScope::~RuleMutationScope() 164 { 165 if (m_styleSheet) 166 m_styleSheet->didMutateRules(); 167 } 168 169 DEFINE_TYPE_CASTS(CSSStyleSheet, StyleSheet, sheet, sheet->isCSSStyleSheet(), sheet.isCSSStyleSheet()); 170 171 } // namespace blink 172 173 #endif 174
