1 /* 2 * (C) 1999-2003 Lars Knoll (knoll@kde.org) 3 * (C) 2002-2003 Dirk Mueller (mueller@kde.org) 4 * Copyright (C) 2002, 2006, 2007, 2012 Apple Inc. All rights reserved. 5 * Copyright (C) 2011 Andreas Kling (kling@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 CSSParserContext; 32 class CSSStyleSheet; 33 class StyleRuleBase; 34 35 class CSSRule : public RefCounted<CSSRule> { 36 public: ~CSSRule()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 KEYFRAMES_RULE, 51 WEBKIT_KEYFRAMES_RULE = KEYFRAMES_RULE, 52 KEYFRAME_RULE, 53 WEBKIT_KEYFRAME_RULE = KEYFRAME_RULE, 54 SUPPORTS_RULE = 12, 55 VIEWPORT_RULE = 15, 56 WEBKIT_REGION_RULE = 16, 57 WEBKIT_FILTER_RULE = 17 58 }; 59 60 virtual Type type() const = 0; 61 virtual String cssText() const = 0; 62 virtual void reattach(StyleRuleBase*) = 0; 63 setParentStyleSheet(CSSStyleSheet * styleSheet)64 void setParentStyleSheet(CSSStyleSheet* styleSheet) 65 { 66 m_parentIsRule = false; 67 m_parentStyleSheet = styleSheet; 68 } 69 setParentRule(CSSRule * rule)70 void setParentRule(CSSRule* rule) 71 { 72 m_parentIsRule = true; 73 m_parentRule = rule; 74 } 75 parentStyleSheet()76 CSSStyleSheet* parentStyleSheet() const 77 { 78 if (m_parentIsRule) 79 return m_parentRule ? m_parentRule->parentStyleSheet() : 0; 80 return m_parentStyleSheet; 81 } 82 parentRule()83 CSSRule* parentRule() const { return m_parentIsRule ? m_parentRule : 0; } 84 85 // NOTE: Just calls notImplemented(). 86 void setCSSText(const String&); 87 88 protected: CSSRule(CSSStyleSheet * parent)89 CSSRule(CSSStyleSheet* parent) 90 : m_hasCachedSelectorText(false) 91 , m_parentIsRule(false) 92 , m_parentStyleSheet(parent) 93 { 94 } 95 hasCachedSelectorText()96 bool hasCachedSelectorText() const { return m_hasCachedSelectorText; } setHasCachedSelectorText(bool hasCachedSelectorText)97 void setHasCachedSelectorText(bool hasCachedSelectorText) const { m_hasCachedSelectorText = hasCachedSelectorText; } 98 99 const CSSParserContext& parserContext() const; 100 101 private: 102 mutable unsigned char m_hasCachedSelectorText : 1; 103 unsigned char m_parentIsRule : 1; 104 105 union { 106 CSSRule* m_parentRule; 107 CSSStyleSheet* m_parentStyleSheet; 108 }; 109 }; 110 111 #define DEFINE_CSS_RULE_TYPE_CASTS(ToType, TYPE_NAME) \ 112 DEFINE_TYPE_CASTS(ToType, CSSRule, rule, rule->type() == CSSRule::TYPE_NAME, rule.type() == CSSRule::TYPE_NAME) 113 114 } // namespace WebCore 115 116 #endif // CSSRule_h 117