1 /* 2 * Copyright (C) 2007, 2008, 2012 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "core/css/CSSKeyframesRule.h" 28 29 #include "core/css/CSSKeyframeRule.h" 30 #include "core/css/CSSRuleList.h" 31 #include "core/css/CSSStyleSheet.h" 32 #include "core/css/parser/CSSParser.h" 33 #include "core/frame/UseCounter.h" 34 #include "wtf/text/StringBuilder.h" 35 36 namespace blink { 37 38 StyleRuleKeyframes::StyleRuleKeyframes() 39 : StyleRuleBase(Keyframes) 40 { 41 } 42 43 StyleRuleKeyframes::StyleRuleKeyframes(const StyleRuleKeyframes& o) 44 : StyleRuleBase(o) 45 , m_keyframes(o.m_keyframes) 46 , m_name(o.m_name) 47 , m_isPrefixed(o.m_isPrefixed) 48 { 49 } 50 51 StyleRuleKeyframes::~StyleRuleKeyframes() 52 { 53 } 54 55 void StyleRuleKeyframes::parserAppendKeyframe(PassRefPtrWillBeRawPtr<StyleKeyframe> keyframe) 56 { 57 if (!keyframe) 58 return; 59 m_keyframes.append(keyframe); 60 } 61 62 void StyleRuleKeyframes::wrapperAppendKeyframe(PassRefPtrWillBeRawPtr<StyleKeyframe> keyframe) 63 { 64 m_keyframes.append(keyframe); 65 } 66 67 void StyleRuleKeyframes::wrapperRemoveKeyframe(unsigned index) 68 { 69 m_keyframes.remove(index); 70 } 71 72 int StyleRuleKeyframes::findKeyframeIndex(const String& key) const 73 { 74 String percentageString; 75 if (equalIgnoringCase(key, "from")) 76 percentageString = "0%"; 77 else if (equalIgnoringCase(key, "to")) 78 percentageString = "100%"; 79 else 80 percentageString = key; 81 82 for (unsigned i = 0; i < m_keyframes.size(); ++i) { 83 if (m_keyframes[i]->keyText() == percentageString) 84 return i; 85 } 86 return -1; 87 } 88 89 void StyleRuleKeyframes::traceAfterDispatch(Visitor* visitor) 90 { 91 visitor->trace(m_keyframes); 92 StyleRuleBase::traceAfterDispatch(visitor); 93 } 94 95 CSSKeyframesRule::CSSKeyframesRule(StyleRuleKeyframes* keyframesRule, CSSStyleSheet* parent) 96 : CSSRule(parent) 97 , m_keyframesRule(keyframesRule) 98 , m_childRuleCSSOMWrappers(keyframesRule->keyframes().size()) 99 , m_isPrefixed(keyframesRule->isVendorPrefixed()) 100 { 101 } 102 103 CSSKeyframesRule::~CSSKeyframesRule() 104 { 105 #if !ENABLE(OILPAN) 106 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size()); 107 for (unsigned i = 0; i < m_childRuleCSSOMWrappers.size(); ++i) { 108 if (m_childRuleCSSOMWrappers[i]) 109 m_childRuleCSSOMWrappers[i]->setParentRule(0); 110 } 111 #endif 112 } 113 114 void CSSKeyframesRule::setName(const String& name) 115 { 116 CSSStyleSheet::RuleMutationScope mutationScope(this); 117 118 m_keyframesRule->setName(name); 119 } 120 121 void CSSKeyframesRule::insertRule(const String& ruleText) 122 { 123 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size()); 124 125 CSSStyleSheet* styleSheet = parentStyleSheet(); 126 CSSParserContext context(parserContext(), UseCounter::getFrom(styleSheet)); 127 RefPtrWillBeRawPtr<StyleKeyframe> keyframe = CSSParser::parseKeyframeRule(context, styleSheet ? styleSheet->contents() : 0, ruleText); 128 if (!keyframe) 129 return; 130 131 CSSStyleSheet::RuleMutationScope mutationScope(this); 132 133 m_keyframesRule->wrapperAppendKeyframe(keyframe); 134 135 m_childRuleCSSOMWrappers.grow(length()); 136 } 137 138 void CSSKeyframesRule::deleteRule(const String& s) 139 { 140 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size()); 141 142 int i = m_keyframesRule->findKeyframeIndex(s); 143 if (i < 0) 144 return; 145 146 CSSStyleSheet::RuleMutationScope mutationScope(this); 147 148 m_keyframesRule->wrapperRemoveKeyframe(i); 149 150 if (m_childRuleCSSOMWrappers[i]) 151 m_childRuleCSSOMWrappers[i]->setParentRule(0); 152 m_childRuleCSSOMWrappers.remove(i); 153 } 154 155 CSSKeyframeRule* CSSKeyframesRule::findRule(const String& s) 156 { 157 int i = m_keyframesRule->findKeyframeIndex(s); 158 return (i >= 0) ? item(i) : 0; 159 } 160 161 String CSSKeyframesRule::cssText() const 162 { 163 StringBuilder result; 164 if (isVendorPrefixed()) 165 result.appendLiteral("@-webkit-keyframes "); 166 else 167 result.appendLiteral("@keyframes "); 168 result.append(name()); 169 result.appendLiteral(" { \n"); 170 171 unsigned size = length(); 172 for (unsigned i = 0; i < size; ++i) { 173 result.appendLiteral(" "); 174 result.append(m_keyframesRule->keyframes()[i]->cssText()); 175 result.append('\n'); 176 } 177 result.append('}'); 178 return result.toString(); 179 } 180 181 unsigned CSSKeyframesRule::length() const 182 { 183 return m_keyframesRule->keyframes().size(); 184 } 185 186 CSSKeyframeRule* CSSKeyframesRule::item(unsigned index) const 187 { 188 if (index >= length()) 189 return 0; 190 191 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size()); 192 RefPtrWillBeMember<CSSKeyframeRule>& rule = m_childRuleCSSOMWrappers[index]; 193 if (!rule) 194 rule = adoptRefWillBeNoop(new CSSKeyframeRule(m_keyframesRule->keyframes()[index].get(), const_cast<CSSKeyframesRule*>(this))); 195 196 return rule.get(); 197 } 198 199 CSSRuleList* CSSKeyframesRule::cssRules() 200 { 201 if (!m_ruleListCSSOMWrapper) 202 m_ruleListCSSOMWrapper = LiveCSSRuleList<CSSKeyframesRule>::create(this); 203 return m_ruleListCSSOMWrapper.get(); 204 } 205 206 void CSSKeyframesRule::reattach(StyleRuleBase* rule) 207 { 208 ASSERT(rule); 209 m_keyframesRule = toStyleRuleKeyframes(rule); 210 } 211 212 void CSSKeyframesRule::trace(Visitor* visitor) 213 { 214 CSSRule::trace(visitor); 215 #if ENABLE(OILPAN) 216 visitor->trace(m_childRuleCSSOMWrappers); 217 #endif 218 visitor->trace(m_keyframesRule); 219 visitor->trace(m_ruleListCSSOMWrapper); 220 } 221 222 } // namespace blink 223
