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/CSSParser.h" 31 #include "core/css/CSSRuleList.h" 32 #include "core/css/CSSStyleSheet.h" 33 #include "wtf/text/StringBuilder.h" 34 35 namespace WebCore { 36 37 StyleRuleKeyframes::StyleRuleKeyframes() 38 : StyleRuleBase(Keyframes) 39 { 40 } 41 42 StyleRuleKeyframes::StyleRuleKeyframes(const StyleRuleKeyframes& o) 43 : StyleRuleBase(o) 44 , m_keyframes(o.m_keyframes) 45 , m_name(o.m_name) 46 , m_isPrefixed(o.m_isPrefixed) 47 { 48 } 49 50 StyleRuleKeyframes::~StyleRuleKeyframes() 51 { 52 } 53 54 void StyleRuleKeyframes::parserAppendKeyframe(PassRefPtr<StyleKeyframe> keyframe) 55 { 56 if (!keyframe) 57 return; 58 m_keyframes.append(keyframe); 59 } 60 61 void StyleRuleKeyframes::wrapperAppendKeyframe(PassRefPtr<StyleKeyframe> keyframe) 62 { 63 m_keyframes.append(keyframe); 64 } 65 66 void StyleRuleKeyframes::wrapperRemoveKeyframe(unsigned index) 67 { 68 m_keyframes.remove(index); 69 } 70 71 int StyleRuleKeyframes::findKeyframeIndex(const String& key) const 72 { 73 String percentageString; 74 if (equalIgnoringCase(key, "from")) 75 percentageString = "0%"; 76 else if (equalIgnoringCase(key, "to")) 77 percentageString = "100%"; 78 else 79 percentageString = key; 80 81 for (unsigned i = 0; i < m_keyframes.size(); ++i) { 82 if (m_keyframes[i]->keyText() == percentageString) 83 return i; 84 } 85 return -1; 86 } 87 88 CSSKeyframesRule::CSSKeyframesRule(StyleRuleKeyframes* keyframesRule, CSSStyleSheet* parent) 89 : CSSRule(parent) 90 , m_keyframesRule(keyframesRule) 91 , m_childRuleCSSOMWrappers(keyframesRule->keyframes().size()) 92 , m_isPrefixed(keyframesRule->isVendorPrefixed()) 93 { 94 } 95 96 CSSKeyframesRule::~CSSKeyframesRule() 97 { 98 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size()); 99 100 for (unsigned i = 0; i < m_childRuleCSSOMWrappers.size(); ++i) { 101 if (m_childRuleCSSOMWrappers[i]) 102 m_childRuleCSSOMWrappers[i]->setParentRule(0); 103 } 104 } 105 106 void CSSKeyframesRule::setName(const String& name) 107 { 108 CSSStyleSheet::RuleMutationScope mutationScope(this); 109 110 m_keyframesRule->setName(name); 111 } 112 113 void CSSKeyframesRule::insertRule(const String& ruleText) 114 { 115 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size()); 116 117 CSSStyleSheet* styleSheet = parentStyleSheet(); 118 CSSParser parser(parserContext(), UseCounter::getFrom(styleSheet)); 119 RefPtr<StyleKeyframe> keyframe = parser.parseKeyframeRule(styleSheet ? styleSheet->contents() : 0, ruleText); 120 if (!keyframe) 121 return; 122 123 CSSStyleSheet::RuleMutationScope mutationScope(this); 124 125 m_keyframesRule->wrapperAppendKeyframe(keyframe); 126 127 m_childRuleCSSOMWrappers.grow(length()); 128 } 129 130 void CSSKeyframesRule::deleteRule(const String& s) 131 { 132 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size()); 133 134 int i = m_keyframesRule->findKeyframeIndex(s); 135 if (i < 0) 136 return; 137 138 CSSStyleSheet::RuleMutationScope mutationScope(this); 139 140 m_keyframesRule->wrapperRemoveKeyframe(i); 141 142 if (m_childRuleCSSOMWrappers[i]) 143 m_childRuleCSSOMWrappers[i]->setParentRule(0); 144 m_childRuleCSSOMWrappers.remove(i); 145 } 146 147 CSSKeyframeRule* CSSKeyframesRule::findRule(const String& s) 148 { 149 int i = m_keyframesRule->findKeyframeIndex(s); 150 return (i >= 0) ? item(i) : 0; 151 } 152 153 String CSSKeyframesRule::cssText() const 154 { 155 StringBuilder result; 156 if (isVendorPrefixed()) 157 result.append("@-webkit-keyframes "); 158 else 159 result.append("@keyframes "); 160 result.append(name()); 161 result.append(" { \n"); 162 163 unsigned size = length(); 164 for (unsigned i = 0; i < size; ++i) { 165 result.append(" "); 166 result.append(m_keyframesRule->keyframes()[i]->cssText()); 167 result.append("\n"); 168 } 169 result.append("}"); 170 return result.toString(); 171 } 172 173 unsigned CSSKeyframesRule::length() const 174 { 175 return m_keyframesRule->keyframes().size(); 176 } 177 178 CSSKeyframeRule* CSSKeyframesRule::item(unsigned index) const 179 { 180 if (index >= length()) 181 return 0; 182 183 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size()); 184 RefPtr<CSSKeyframeRule>& rule = m_childRuleCSSOMWrappers[index]; 185 if (!rule) 186 rule = adoptRef(new CSSKeyframeRule(m_keyframesRule->keyframes()[index].get(), const_cast<CSSKeyframesRule*>(this))); 187 188 return rule.get(); 189 } 190 191 CSSRuleList* CSSKeyframesRule::cssRules() 192 { 193 if (!m_ruleListCSSOMWrapper) 194 m_ruleListCSSOMWrapper = adoptPtr(new LiveCSSRuleList<CSSKeyframesRule>(this)); 195 return m_ruleListCSSOMWrapper.get(); 196 } 197 198 void CSSKeyframesRule::reattach(StyleRuleBase* rule) 199 { 200 ASSERT(rule); 201 m_keyframesRule = toStyleRuleKeyframes(rule); 202 } 203 204 } // namespace WebCore 205
