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, 2005, 2006, 2007, 2012 Apple Inc. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 #include "config.h" 23 #include "core/css/CSSRule.h" 24 25 #include "core/css/CSSStyleSheet.h" 26 #include "core/css/StyleRule.h" 27 #include "core/css/StyleSheetContents.h" 28 #include "platform/NotImplemented.h" 29 30 namespace WebCore { 31 32 struct SameSizeAsCSSRule : public RefCountedWillBeGarbageCollectedFinalized<SameSizeAsCSSRule> { 33 virtual ~SameSizeAsCSSRule(); 34 unsigned char bitfields; 35 void* pointerUnion; 36 }; 37 38 COMPILE_ASSERT(sizeof(CSSRule) == sizeof(SameSizeAsCSSRule), CSSRule_should_stay_small); 39 40 COMPILE_ASSERT(StyleRuleBase::Viewport == static_cast<StyleRuleBase::Type>(CSSRule::VIEWPORT_RULE), enums_should_match); 41 42 void CSSRule::setCSSText(const String&) 43 { 44 notImplemented(); 45 } 46 47 const CSSParserContext& CSSRule::parserContext() const 48 { 49 CSSStyleSheet* styleSheet = parentStyleSheet(); 50 return styleSheet ? styleSheet->contents()->parserContext() : strictCSSParserContext(); 51 } 52 53 void CSSRule::trace(Visitor* visitor) 54 { 55 // This makes the parent link strong, which is different from the 56 // pre-oilpan world, where the parent link is mysteriously zeroed under 57 // some circumstances. 58 if (m_parentIsRule) 59 visitor->trace(m_parentRule); 60 else 61 visitor->trace(m_parentStyleSheet); 62 } 63 64 } // namespace WebCore 65
