• Home
  • History
  • Annotate
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 
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     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 
deleteRule(const String & s)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 
findRule(const String & s)155 CSSKeyframeRule* CSSKeyframesRule::findRule(const String& s)
156 {
157     int i = m_keyframesRule->findKeyframeIndex(s);
158     return (i >= 0) ? item(i) : 0;
159 }
160 
cssText() const161 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 
length() const181 unsigned CSSKeyframesRule::length() const
182 {
183     return m_keyframesRule->keyframes().size();
184 }
185 
item(unsigned index) const186 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 
cssRules()199 CSSRuleList* CSSKeyframesRule::cssRules()
200 {
201     if (!m_ruleListCSSOMWrapper)
202         m_ruleListCSSOMWrapper = LiveCSSRuleList<CSSKeyframesRule>::create(this);
203     return m_ruleListCSSOMWrapper.get();
204 }
205 
reattach(StyleRuleBase * rule)206 void CSSKeyframesRule::reattach(StyleRuleBase* rule)
207 {
208     ASSERT(rule);
209     m_keyframesRule = toStyleRuleKeyframes(rule);
210 }
211 
trace(Visitor * visitor)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