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 "wtf/Noncopyable.h" 27 #include "wtf/text/TextPosition.h" 28 29 namespace WebCore { 30 31 class CSSCharsetRule; 32 class CSSImportRule; 33 class CSSParser; 34 class CSSRule; 35 class CSSRuleList; 36 class CSSStyleSheet; 37 class CSSStyleSheetResource; 38 class Document; 39 class ExceptionState; 40 class MediaQuerySet; 41 class SecurityOrigin; 42 class StyleSheetContents; 43 44 enum StyleSheetUpdateType { 45 PartialRuleUpdate, 46 EntireStyleSheetUpdate 47 }; 48 49 class CSSStyleSheet : public StyleSheet { 50 public: 51 static PassRefPtr<CSSStyleSheet> create(PassRefPtr<StyleSheetContents>, CSSImportRule* ownerRule = 0); 52 static PassRefPtr<CSSStyleSheet> create(PassRefPtr<StyleSheetContents>, Node* ownerNode); 53 static PassRefPtr<CSSStyleSheet> createInline(Node*, const KURL&, const TextPosition& startPosition = TextPosition::minimumPosition(), const String& encoding = String()); 54 55 virtual ~CSSStyleSheet(); 56 57 virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE; 58 virtual Node* ownerNode() const OVERRIDE { return m_ownerNode; } 59 virtual MediaList* media() const OVERRIDE; 60 virtual String href() const OVERRIDE; 61 virtual String title() const OVERRIDE { return m_title; } 62 virtual bool disabled() const OVERRIDE { return m_isDisabled; } 63 virtual void setDisabled(bool) OVERRIDE; 64 65 PassRefPtr<CSSRuleList> cssRules(); 66 unsigned insertRule(const String& rule, unsigned index, ExceptionState&); 67 unsigned insertRule(const String& rule, ExceptionState&); // Deprecated. 68 void deleteRule(unsigned index, ExceptionState&); 69 70 // IE Extensions 71 PassRefPtr<CSSRuleList> rules(); 72 int addRule(const String& selector, const String& style, int index, ExceptionState&); 73 int addRule(const String& selector, const String& style, ExceptionState&); 74 void removeRule(unsigned index, ExceptionState& exceptionState) { deleteRule(index, exceptionState); } 75 76 // For CSSRuleList. 77 unsigned length() const; 78 CSSRule* item(unsigned index); 79 80 virtual void clearOwnerNode() OVERRIDE { didMutate(EntireStyleSheetUpdate); m_ownerNode = 0; } 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 = 0; } 86 Document* ownerDocument() const; 87 MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); } 88 void setMediaQueries(PassRefPtr<MediaQuerySet>); 89 void setTitle(const String& title) { m_title = title; } 90 91 class RuleMutationScope { 92 WTF_MAKE_NONCOPYABLE(RuleMutationScope); 93 public: 94 RuleMutationScope(CSSStyleSheet*); 95 RuleMutationScope(CSSRule*); 96 ~RuleMutationScope(); 97 98 private: 99 CSSStyleSheet* m_styleSheet; 100 }; 101 102 void willMutateRules(); 103 void didMutateRules(); 104 void didMutate(StyleSheetUpdateType = PartialRuleUpdate); 105 106 void clearChildRuleCSSOMWrappers(); 107 108 void registerExtraChildRuleCSSOMWrapper(PassRefPtr<CSSRule>); 109 110 StyleSheetContents* contents() const { return m_contents.get(); } 111 112 bool isInline() const { return m_isInlineStylesheet; } 113 TextPosition startPositionInSource() const { return m_startPosition; } 114 115 private: 116 CSSStyleSheet(PassRefPtr<StyleSheetContents>, CSSImportRule* ownerRule); 117 CSSStyleSheet(PassRefPtr<StyleSheetContents>, Node* ownerNode, bool isInlineStylesheet, const TextPosition& startPosition); 118 119 virtual bool isCSSStyleSheet() const { return true; } 120 virtual String type() const { return "text/css"; } 121 122 void extraCSSOMWrapperIndices(Vector<unsigned>& indices); 123 void reattachChildRuleCSSOMWrappers(const Vector<unsigned>& extraCSSOMWrapperIndices); 124 125 bool canAccessRules() const; 126 127 RefPtr<StyleSheetContents> m_contents; 128 bool m_isInlineStylesheet; 129 bool m_isDisabled; 130 String m_title; 131 RefPtr<MediaQuerySet> m_mediaQueries; 132 133 Node* m_ownerNode; 134 CSSRule* m_ownerRule; 135 136 TextPosition m_startPosition; 137 138 mutable RefPtr<MediaList> m_mediaCSSOMWrapper; 139 mutable Vector<RefPtr<CSSRule> > m_childRuleCSSOMWrappers; 140 // These are CSSOMWrappers that come from getMatchedCSSRules and thus don't map 1-1 to 141 // the StyleRules in the StyleSheetContents. 142 mutable Vector<RefPtr<CSSRule> > m_extraChildRuleCSSOMWrappers; 143 mutable OwnPtr<CSSRuleList> m_ruleListCSSOMWrapper; 144 }; 145 146 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSStyleSheet* sheet) 147 : m_styleSheet(sheet) 148 { 149 if (m_styleSheet) 150 m_styleSheet->willMutateRules(); 151 } 152 153 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSRule* rule) 154 : m_styleSheet(rule ? rule->parentStyleSheet() : 0) 155 { 156 if (m_styleSheet) 157 m_styleSheet->willMutateRules(); 158 } 159 160 inline CSSStyleSheet::RuleMutationScope::~RuleMutationScope() 161 { 162 if (m_styleSheet) 163 m_styleSheet->didMutateRules(); 164 } 165 166 DEFINE_TYPE_CASTS(CSSStyleSheet, StyleSheet, sheet, sheet->isCSSStyleSheet(), sheet.isCSSStyleSheet()); 167 168 } // namespace 169 170 #endif 171
