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