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 StyleSheetContents_h 22 #define StyleSheetContents_h 23 24 #include "core/css/CSSParserMode.h" 25 #include "core/css/RuleSet.h" 26 #include "platform/weborigin/KURL.h" 27 #include "wtf/HashMap.h" 28 #include "wtf/ListHashSet.h" 29 #include "wtf/RefCounted.h" 30 #include "wtf/Vector.h" 31 #include "wtf/text/AtomicStringHash.h" 32 #include "wtf/text/StringHash.h" 33 #include "wtf/text/TextPosition.h" 34 35 36 namespace WebCore { 37 38 class CSSStyleSheet; 39 class CSSStyleSheetResource; 40 class Document; 41 class Node; 42 class SecurityOrigin; 43 class StyleRuleBase; 44 class StyleRuleImport; 45 46 class StyleSheetContents : public RefCounted<StyleSheetContents> { 47 public: 48 static PassRefPtr<StyleSheetContents> create(const CSSParserContext& context = CSSParserContext(HTMLStandardMode)) 49 { 50 return adoptRef(new StyleSheetContents(0, String(), context)); 51 } 52 static PassRefPtr<StyleSheetContents> create(const String& originalURL, const CSSParserContext& context) 53 { 54 return adoptRef(new StyleSheetContents(0, originalURL, context)); 55 } 56 static PassRefPtr<StyleSheetContents> create(StyleRuleImport* ownerRule, const String& originalURL, const CSSParserContext& context) 57 { 58 return adoptRef(new StyleSheetContents(ownerRule, originalURL, context)); 59 } 60 61 ~StyleSheetContents(); 62 63 const CSSParserContext& parserContext() const { return m_parserContext; } 64 65 const AtomicString& determineNamespace(const AtomicString& prefix); 66 67 void parseAuthorStyleSheet(const CSSStyleSheetResource*, const SecurityOrigin*); 68 bool parseString(const String&); 69 bool parseStringAtPosition(const String&, const TextPosition&, bool); 70 71 bool isCacheable() const; 72 73 bool isLoading() const; 74 75 void checkLoaded(); 76 void startLoadingDynamicSheet(); 77 78 StyleSheetContents* rootStyleSheet() const; 79 bool hasSingleOwnerNode() const; 80 Node* singleOwnerNode() const; 81 Document* singleOwnerDocument() const; 82 83 const String& charset() const { return m_parserContext.charset(); } 84 85 bool loadCompleted() const { return m_loadCompleted; } 86 bool hasFailedOrCanceledSubresources() const; 87 88 KURL completeURL(const String& url) const; 89 void addSubresourceStyleURLs(ListHashSet<KURL>&); 90 91 void setHasSyntacticallyValidCSSHeader(bool b) { m_hasSyntacticallyValidCSSHeader = b; } 92 bool hasSyntacticallyValidCSSHeader() const { return m_hasSyntacticallyValidCSSHeader; } 93 94 void setHasFontFaceRule(bool b) { m_hasFontFaceRule = b; } 95 bool hasFontFaceRule() const { return m_hasFontFaceRule; } 96 97 void parserAddNamespace(const AtomicString& prefix, const AtomicString& uri); 98 void parserAppendRule(PassRefPtr<StyleRuleBase>); 99 void parserSetEncodingFromCharsetRule(const String& encoding); 100 void parserSetUsesRemUnits(bool b) { m_usesRemUnits = b; } 101 102 void clearRules(); 103 104 bool hasCharsetRule() const { return !m_encodingFromCharsetRule.isNull(); } 105 String encodingFromCharsetRule() const { return m_encodingFromCharsetRule; } 106 // Rules other than @charset and @import. 107 const Vector<RefPtr<StyleRuleBase> >& childRules() const { return m_childRules; } 108 const Vector<RefPtr<StyleRuleImport> >& importRules() const { return m_importRules; } 109 110 void notifyLoadedSheet(const CSSStyleSheetResource*); 111 112 StyleSheetContents* parentStyleSheet() const; 113 StyleRuleImport* ownerRule() const { return m_ownerRule; } 114 void clearOwnerRule() { m_ownerRule = 0; } 115 116 // Note that href is the URL that started the redirect chain that led to 117 // this style sheet. This property probably isn't useful for much except 118 // the JavaScript binding (which needs to use this value for security). 119 String originalURL() const { return m_originalURL; } 120 const KURL& baseURL() const { return m_parserContext.baseURL(); } 121 122 unsigned ruleCount() const; 123 StyleRuleBase* ruleAt(unsigned index) const; 124 125 bool usesRemUnits() const { return m_usesRemUnits; } 126 127 unsigned estimatedSizeInBytes() const; 128 129 bool wrapperInsertRule(PassRefPtr<StyleRuleBase>, unsigned index); 130 void wrapperDeleteRule(unsigned index); 131 132 PassRefPtr<StyleSheetContents> copy() const { return adoptRef(new StyleSheetContents(*this)); } 133 134 void registerClient(CSSStyleSheet*); 135 void unregisterClient(CSSStyleSheet*); 136 bool hasOneClient() { return m_clients.size() == 1; } 137 138 bool isMutable() const { return m_isMutable; } 139 void setMutable() { m_isMutable = true; } 140 141 bool isInMemoryCache() const { return m_isInMemoryCache; } 142 void addedToMemoryCache(); 143 void removedFromMemoryCache(); 144 145 void setHasMediaQueries(); 146 bool hasMediaQueries() { return m_hasMediaQueries; } 147 148 void shrinkToFit(); 149 RuleSet& ruleSet() { ASSERT(m_ruleSet); return *m_ruleSet.get(); } 150 RuleSet& ensureRuleSet(const MediaQueryEvaluator&, AddRuleFlags); 151 void clearRuleSet(); 152 153 private: 154 StyleSheetContents(StyleRuleImport* ownerRule, const String& originalURL, const CSSParserContext&); 155 StyleSheetContents(const StyleSheetContents&); 156 157 void clearCharsetRule(); 158 159 StyleRuleImport* m_ownerRule; 160 161 String m_originalURL; 162 163 String m_encodingFromCharsetRule; 164 Vector<RefPtr<StyleRuleImport> > m_importRules; 165 Vector<RefPtr<StyleRuleBase> > m_childRules; 166 typedef HashMap<AtomicString, AtomicString> PrefixNamespaceURIMap; 167 PrefixNamespaceURIMap m_namespaces; 168 169 bool m_loadCompleted : 1; 170 bool m_hasSyntacticallyValidCSSHeader : 1; 171 bool m_didLoadErrorOccur : 1; 172 bool m_usesRemUnits : 1; 173 bool m_isMutable : 1; 174 bool m_isInMemoryCache : 1; 175 bool m_hasFontFaceRule : 1; 176 bool m_hasMediaQueries : 1; 177 178 CSSParserContext m_parserContext; 179 180 Vector<CSSStyleSheet*> m_clients; 181 OwnPtr<RuleSet> m_ruleSet; 182 }; 183 184 } // namespace 185 186 #endif 187
