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 class CSSStyleSheet : public StyleSheet { 45 public: 46 static PassRefPtr<CSSStyleSheet> create(PassRefPtr<StyleSheetContents>, CSSImportRule* ownerRule = 0); 47 static PassRefPtr<CSSStyleSheet> create(PassRefPtr<StyleSheetContents>, Node* ownerNode); 48 static PassRefPtr<CSSStyleSheet> createInline(Node*, const KURL&, const TextPosition& startPosition = TextPosition::minimumPosition(), const String& encoding = String()); 49 50 virtual ~CSSStyleSheet(); 51 52 virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE; 53 virtual Node* ownerNode() const OVERRIDE { return m_ownerNode; } 54 virtual MediaList* media() const OVERRIDE; 55 virtual String href() const OVERRIDE; 56 virtual String title() const OVERRIDE { return m_title; } 57 virtual bool disabled() const OVERRIDE { return m_isDisabled; } 58 virtual void setDisabled(bool) OVERRIDE; 59 60 PassRefPtr<CSSRuleList> cssRules(); 61 unsigned insertRule(const String& rule, unsigned index, ExceptionState&); 62 void deleteRule(unsigned index, ExceptionState&); 63 64 // IE Extensions 65 PassRefPtr<CSSRuleList> rules(); 66 int addRule(const String& selector, const String& style, int index, ExceptionState&); 67 int addRule(const String& selector, const String& style, ExceptionState&); 68 void removeRule(unsigned index, ExceptionState& es) { deleteRule(index, es); } 69 70 // For CSSRuleList. 71 unsigned length() const; 72 CSSRule* item(unsigned index); 73 74 virtual void clearOwnerNode() OVERRIDE { didMutate(); m_ownerNode = 0; } 75 virtual CSSRule* ownerRule() const OVERRIDE { return m_ownerRule; } 76 virtual KURL baseURL() const OVERRIDE; 77 virtual bool isLoading() const OVERRIDE; 78 79 void clearOwnerRule() { m_ownerRule = 0; } 80 Document* ownerDocument() const; 81 MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); } 82 void setMediaQueries(PassRefPtr<MediaQuerySet>); 83 void setTitle(const String& title) { m_title = title; } 84 85 class RuleMutationScope { 86 WTF_MAKE_NONCOPYABLE(RuleMutationScope); 87 public: 88 RuleMutationScope(CSSStyleSheet*); 89 RuleMutationScope(CSSRule*); 90 ~RuleMutationScope(); 91 92 private: 93 CSSStyleSheet* m_styleSheet; 94 }; 95 96 void willMutateRules(); 97 void didMutateRules(); 98 void didMutate(); 99 100 void clearChildRuleCSSOMWrappers(); 101 void reattachChildRuleCSSOMWrappers(); 102 103 StyleSheetContents* contents() const { return m_contents.get(); } 104 105 bool isInline() const { return m_isInlineStylesheet; } 106 TextPosition startPositionInSource() const { return m_startPosition; } 107 108 private: 109 CSSStyleSheet(PassRefPtr<StyleSheetContents>, CSSImportRule* ownerRule); 110 CSSStyleSheet(PassRefPtr<StyleSheetContents>, Node* ownerNode, bool isInlineStylesheet, const TextPosition& startPosition); 111 112 virtual bool isCSSStyleSheet() const { return true; } 113 virtual String type() const { return "text/css"; } 114 115 bool canAccessRules() const; 116 117 RefPtr<StyleSheetContents> m_contents; 118 bool m_isInlineStylesheet; 119 bool m_isDisabled; 120 String m_title; 121 RefPtr<MediaQuerySet> m_mediaQueries; 122 123 Node* m_ownerNode; 124 CSSRule* m_ownerRule; 125 126 TextPosition m_startPosition; 127 128 mutable RefPtr<MediaList> m_mediaCSSOMWrapper; 129 mutable Vector<RefPtr<CSSRule> > m_childRuleCSSOMWrappers; 130 mutable OwnPtr<CSSRuleList> m_ruleListCSSOMWrapper; 131 }; 132 133 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSStyleSheet* sheet) 134 : m_styleSheet(sheet) 135 { 136 if (m_styleSheet) 137 m_styleSheet->willMutateRules(); 138 } 139 140 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSRule* rule) 141 : m_styleSheet(rule ? rule->parentStyleSheet() : 0) 142 { 143 if (m_styleSheet) 144 m_styleSheet->willMutateRules(); 145 } 146 147 inline CSSStyleSheet::RuleMutationScope::~RuleMutationScope() 148 { 149 if (m_styleSheet) 150 m_styleSheet->didMutateRules(); 151 } 152 153 } // namespace 154 155 #endif 156
