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/parser/BisonCSSParser.h"
31 #include "core/css/CSSRuleList.h"
32 #include "core/css/CSSStyleSheet.h"
33 #include "core/frame/UseCounter.h"
34 #include "wtf/text/StringBuilder.h"
35
36 namespace WebCore {
37
StyleRuleKeyframes()38 StyleRuleKeyframes::StyleRuleKeyframes()
39 : StyleRuleBase(Keyframes)
40 {
41 }
42
StyleRuleKeyframes(const StyleRuleKeyframes & o)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
~StyleRuleKeyframes()51 StyleRuleKeyframes::~StyleRuleKeyframes()
52 {
53 }
54
parserAppendKeyframe(PassRefPtrWillBeRawPtr<StyleKeyframe> keyframe)55 void StyleRuleKeyframes::parserAppendKeyframe(PassRefPtrWillBeRawPtr<StyleKeyframe> keyframe)
56 {
57 if (!keyframe)
58 return;
59 m_keyframes.append(keyframe);
60 }
61
wrapperAppendKeyframe(PassRefPtrWillBeRawPtr<StyleKeyframe> keyframe)62 void StyleRuleKeyframes::wrapperAppendKeyframe(PassRefPtrWillBeRawPtr<StyleKeyframe> keyframe)
63 {
64 m_keyframes.append(keyframe);
65 }
66
wrapperRemoveKeyframe(unsigned index)67 void StyleRuleKeyframes::wrapperRemoveKeyframe(unsigned index)
68 {
69 m_keyframes.remove(index);
70 }
71
findKeyframeIndex(const String & key) const72 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
traceAfterDispatch(Visitor * visitor)89 void StyleRuleKeyframes::traceAfterDispatch(Visitor* visitor)
90 {
91 visitor->trace(m_keyframes);
92 StyleRuleBase::traceAfterDispatch(visitor);
93 }
94
CSSKeyframesRule(StyleRuleKeyframes * keyframesRule,CSSStyleSheet * parent)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
~CSSKeyframesRule()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
setName(const String & name)114 void CSSKeyframesRule::setName(const String& name)
115 {
116 CSSStyleSheet::RuleMutationScope mutationScope(this);
117
118 m_keyframesRule->setName(name);
119 }
120
insertRule(const String & ruleText)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 BisonCSSParser parser(context);
128 RefPtrWillBeRawPtr<StyleKeyframe> keyframe = parser.parseKeyframeRule(styleSheet ? styleSheet->contents() : 0, ruleText);
129 if (!keyframe)
130 return;
131
132 CSSStyleSheet::RuleMutationScope mutationScope(this);
133
134 m_keyframesRule->wrapperAppendKeyframe(keyframe);
135
136 m_childRuleCSSOMWrappers.grow(length());
137 }
138
deleteRule(const String & s)139 void CSSKeyframesRule::deleteRule(const String& s)
140 {
141 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size());
142
143 int i = m_keyframesRule->findKeyframeIndex(s);
144 if (i < 0)
145 return;
146
147 CSSStyleSheet::RuleMutationScope mutationScope(this);
148
149 m_keyframesRule->wrapperRemoveKeyframe(i);
150
151 if (m_childRuleCSSOMWrappers[i])
152 m_childRuleCSSOMWrappers[i]->setParentRule(0);
153 m_childRuleCSSOMWrappers.remove(i);
154 }
155
findRule(const String & s)156 CSSKeyframeRule* CSSKeyframesRule::findRule(const String& s)
157 {
158 int i = m_keyframesRule->findKeyframeIndex(s);
159 return (i >= 0) ? item(i) : 0;
160 }
161
cssText() const162 String CSSKeyframesRule::cssText() const
163 {
164 StringBuilder result;
165 if (isVendorPrefixed())
166 result.append("@-webkit-keyframes ");
167 else
168 result.append("@keyframes ");
169 result.append(name());
170 result.append(" { \n");
171
172 unsigned size = length();
173 for (unsigned i = 0; i < size; ++i) {
174 result.append(" ");
175 result.append(m_keyframesRule->keyframes()[i]->cssText());
176 result.append("\n");
177 }
178 result.append("}");
179 return result.toString();
180 }
181
length() const182 unsigned CSSKeyframesRule::length() const
183 {
184 return m_keyframesRule->keyframes().size();
185 }
186
item(unsigned index) const187 CSSKeyframeRule* CSSKeyframesRule::item(unsigned index) const
188 {
189 if (index >= length())
190 return 0;
191
192 ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size());
193 RefPtrWillBeMember<CSSKeyframeRule>& rule = m_childRuleCSSOMWrappers[index];
194 if (!rule)
195 rule = adoptRefWillBeNoop(new CSSKeyframeRule(m_keyframesRule->keyframes()[index].get(), const_cast<CSSKeyframesRule*>(this)));
196
197 return rule.get();
198 }
199
cssRules()200 CSSRuleList* CSSKeyframesRule::cssRules()
201 {
202 if (!m_ruleListCSSOMWrapper)
203 m_ruleListCSSOMWrapper = LiveCSSRuleList<CSSKeyframesRule>::create(this);
204 return m_ruleListCSSOMWrapper.get();
205 }
206
reattach(StyleRuleBase * rule)207 void CSSKeyframesRule::reattach(StyleRuleBase* rule)
208 {
209 ASSERT(rule);
210 m_keyframesRule = toStyleRuleKeyframes(rule);
211 }
212
trace(Visitor * visitor)213 void CSSKeyframesRule::trace(Visitor* visitor)
214 {
215 CSSRule::trace(visitor);
216 #if ENABLE(OILPAN)
217 visitor->trace(m_childRuleCSSOMWrappers);
218 #endif
219 visitor->trace(m_keyframesRule);
220 visitor->trace(m_ruleListCSSOMWrapper);
221 }
222
223 } // namespace WebCore
224