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| 1 /* | |
| 2 * (C) 1999-2003 Lars Knoll (knoll@kde.org) | |
| 3 * (C) 2002-2003 Dirk Mueller (mueller@kde.org) | |
| 4 * Copyright (C) 2002, 2005, 2006, 2008, 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 "sky/engine/config.h" | |
| 23 #include "sky/engine/core/css/CSSStyleRule.h" | |
| 24 | |
| 25 #include "sky/engine/core/css/CSSSelector.h" | |
| 26 #include "sky/engine/core/css/CSSStyleSheet.h" | |
| 27 #include "sky/engine/core/css/PropertySetCSSStyleDeclaration.h" | |
| 28 #include "sky/engine/core/css/StylePropertySet.h" | |
| 29 #include "sky/engine/core/css/StyleRule.h" | |
| 30 #include "sky/engine/core/css/parser/BisonCSSParser.h" | |
| 31 #include "sky/engine/wtf/text/StringBuilder.h" | |
| 32 | |
| 33 namespace blink { | |
| 34 | |
| 35 typedef HashMap<const CSSStyleRule*, String> SelectorTextCache; | |
| 36 static SelectorTextCache& selectorTextCache() | |
| 37 { | |
| 38 DEFINE_STATIC_LOCAL(SelectorTextCache, cache, ()); | |
| 39 return cache; | |
| 40 } | |
| 41 | |
| 42 CSSStyleRule::CSSStyleRule(StyleRule* styleRule, CSSStyleSheet* parent) | |
| 43 : CSSRule(parent) | |
| 44 , m_styleRule(styleRule) | |
| 45 { | |
| 46 } | |
| 47 | |
| 48 CSSStyleRule::~CSSStyleRule() | |
| 49 { | |
| 50 #if !ENABLE(OILPAN) | |
| 51 if (m_propertiesCSSOMWrapper) | |
| 52 m_propertiesCSSOMWrapper->clearParentRule(); | |
| 53 #endif | |
| 54 if (hasCachedSelectorText()) { | |
| 55 selectorTextCache().remove(this); | |
| 56 setHasCachedSelectorText(false); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 CSSStyleDeclaration* CSSStyleRule::style() const | |
| 61 { | |
| 62 if (!m_propertiesCSSOMWrapper) { | |
| 63 m_propertiesCSSOMWrapper = StyleRuleCSSStyleDeclaration::create(m_styleR
ule->mutableProperties(), const_cast<CSSStyleRule*>(this)); | |
| 64 } | |
| 65 return m_propertiesCSSOMWrapper.get(); | |
| 66 } | |
| 67 | |
| 68 String CSSStyleRule::generateSelectorText() const | |
| 69 { | |
| 70 StringBuilder builder; | |
| 71 for (const CSSSelector* selector = m_styleRule->selectorList().first(); sele
ctor; selector = CSSSelectorList::next(*selector)) { | |
| 72 if (selector != m_styleRule->selectorList().first()) | |
| 73 builder.appendLiteral(", "); | |
| 74 builder.append(selector->selectorText()); | |
| 75 } | |
| 76 return builder.toString(); | |
| 77 } | |
| 78 | |
| 79 String CSSStyleRule::selectorText() const | |
| 80 { | |
| 81 if (hasCachedSelectorText()) { | |
| 82 ASSERT(selectorTextCache().contains(this)); | |
| 83 return selectorTextCache().get(this); | |
| 84 } | |
| 85 | |
| 86 ASSERT(!selectorTextCache().contains(this)); | |
| 87 String text = generateSelectorText(); | |
| 88 selectorTextCache().set(this, text); | |
| 89 setHasCachedSelectorText(true); | |
| 90 return text; | |
| 91 } | |
| 92 | |
| 93 void CSSStyleRule::setSelectorText(const String& selectorText) | |
| 94 { | |
| 95 CSSParserContext context(parserContext(), 0); | |
| 96 BisonCSSParser p(context); | |
| 97 CSSSelectorList selectorList; | |
| 98 p.parseSelector(selectorText, selectorList); | |
| 99 if (!selectorList.isValid()) | |
| 100 return; | |
| 101 | |
| 102 CSSStyleSheet::RuleMutationScope mutationScope(this); | |
| 103 | |
| 104 m_styleRule->wrapperAdoptSelectorList(selectorList); | |
| 105 | |
| 106 if (hasCachedSelectorText()) { | |
| 107 selectorTextCache().remove(this); | |
| 108 setHasCachedSelectorText(false); | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 String CSSStyleRule::cssText() const | |
| 113 { | |
| 114 StringBuilder result; | |
| 115 result.append(selectorText()); | |
| 116 result.appendLiteral(" { "); | |
| 117 String decls = m_styleRule->properties().asText(); | |
| 118 result.append(decls); | |
| 119 if (!decls.isEmpty()) | |
| 120 result.append(' '); | |
| 121 result.append('}'); | |
| 122 return result.toString(); | |
| 123 } | |
| 124 | |
| 125 void CSSStyleRule::reattach(StyleRuleBase* rule) | |
| 126 { | |
| 127 ASSERT(rule); | |
| 128 m_styleRule = toStyleRule(rule); | |
| 129 if (m_propertiesCSSOMWrapper) | |
| 130 m_propertiesCSSOMWrapper->reattach(m_styleRule->mutableProperties()); | |
| 131 } | |
| 132 | |
| 133 } // namespace blink | |
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