1 /* 2 * (C) 1999-2003 Lars Knoll (knoll (at) kde.org) 3 * (C) 2002-2003 Dirk Mueller (mueller (at) kde.org) 4 * Copyright (C) 2002, 2006, 2007, 2012 Apple Inc. All rights reserved. 5 * Copyright (C) 2011 Andreas Kling (kling (at) webkit.org) 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 */ 22 23 #ifndef CSSRule_h 24 #define CSSRule_h 25 26 #include "wtf/RefCounted.h" 27 #include "wtf/text/WTFString.h" 28 29 namespace WebCore { 30 31 class CSSStyleSheet; 32 class StyleRuleBase; 33 struct CSSParserContext; 34 35 class CSSRule : public RefCounted<CSSRule> { 36 public: 37 virtual ~CSSRule() { } 38 39 enum Type { 40 UNKNOWN_RULE, 41 STYLE_RULE, 42 CHARSET_RULE, 43 IMPORT_RULE, 44 MEDIA_RULE, 45 FONT_FACE_RULE, 46 PAGE_RULE, 47 // 7 was VARIABLES_RULE; we now match other browsers with 7 as 48 // KEYFRAMES_RULE: 49 // <https://bugs.webkit.org/show_bug.cgi?id=71293>. 50 WEBKIT_KEYFRAMES_RULE, 51 WEBKIT_KEYFRAME_RULE, 52 SUPPORTS_RULE = 12, 53 VIEWPORT_RULE = 15, 54 WEBKIT_REGION_RULE = 16, 55 WEBKIT_FILTER_RULE = 17, 56 HOST_RULE = 1001, 57 }; 58 59 virtual Type type() const = 0; 60 virtual String cssText() const = 0; 61 virtual void reattach(StyleRuleBase*) = 0; 62 63 void setParentStyleSheet(CSSStyleSheet* styleSheet) 64 { 65 m_parentIsRule = false; 66 m_parentStyleSheet = styleSheet; 67 } 68 69 void setParentRule(CSSRule* rule) 70 { 71 m_parentIsRule = true; 72 m_parentRule = rule; 73 } 74 75 CSSStyleSheet* parentStyleSheet() const 76 { 77 if (m_parentIsRule) 78 return m_parentRule ? m_parentRule->parentStyleSheet() : 0; 79 return m_parentStyleSheet; 80 } 81 82 CSSRule* parentRule() const { return m_parentIsRule ? m_parentRule : 0; } 83 84 // NOTE: Just calls notImplemented(). 85 void setCssText(const String&); 86 87 protected: 88 CSSRule(CSSStyleSheet* parent) 89 : m_hasCachedSelectorText(false) 90 , m_parentIsRule(false) 91 , m_parentStyleSheet(parent) 92 { 93 } 94 95 bool hasCachedSelectorText() const { return m_hasCachedSelectorText; } 96 void setHasCachedSelectorText(bool hasCachedSelectorText) const { m_hasCachedSelectorText = hasCachedSelectorText; } 97 98 const CSSParserContext& parserContext() const; 99 100 private: 101 mutable unsigned char m_hasCachedSelectorText : 1; 102 unsigned char m_parentIsRule : 1; 103 104 union { 105 CSSRule* m_parentRule; 106 CSSStyleSheet* m_parentStyleSheet; 107 }; 108 }; 109 110 } // namespace WebCore 111 112 #endif // CSSRule_h 113