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/CSSKeyframeRule.h"
28
29 #include "core/css/CSSKeyframesRule.h"
30 #include "core/css/parser/BisonCSSParser.h"
31 #include "core/css/PropertySetCSSStyleDeclaration.h"
32 #include "core/css/StylePropertySet.h"
33 #include "core/frame/UseCounter.h"
34 #include "wtf/text/StringBuilder.h"
35
36 namespace WebCore {
37
StyleKeyframe()38 StyleKeyframe::StyleKeyframe()
39 {
40 }
41
~StyleKeyframe()42 StyleKeyframe::~StyleKeyframe()
43 {
44 }
45
keyText() const46 String StyleKeyframe::keyText() const
47 {
48 if (m_keyText.isNull()) {
49 // Keys are always set when these objects are created.
50 ASSERT(m_keys && !m_keys->isEmpty());
51 StringBuilder keyText;
52 for (unsigned i = 0; i < m_keys->size(); ++i) {
53 if (i)
54 keyText.append(',');
55 keyText.append(String::number(m_keys->at(i) * 100));
56 keyText.append('%');
57 }
58 m_keyText = keyText.toString();
59 }
60 ASSERT(!m_keyText.isNull());
61 return m_keyText;
62 }
63
setKeyText(const String & keyText)64 void StyleKeyframe::setKeyText(const String& keyText)
65 {
66 // FIXME: Should we trim whitespace?
67 // FIXME: Should we leave keyText unchanged when attempting to set to an
68 // invalid string?
69 ASSERT(!keyText.isNull());
70 m_keyText = keyText;
71 m_keys.clear();
72 }
73
keys() const74 const Vector<double>& StyleKeyframe::keys() const
75 {
76 if (!m_keys) {
77 // Keys can only be cleared by setting the key text from JavaScript
78 // and this can never be null.
79 ASSERT(!m_keyText.isNull());
80 m_keys = BisonCSSParser(strictCSSParserContext()).parseKeyframeKeyList(m_keyText);
81 }
82 // If an invalid key string was set, m_keys may be empty.
83 ASSERT(m_keys);
84 return *m_keys;
85 }
86
setKeys(PassOwnPtr<Vector<double>> keys)87 void StyleKeyframe::setKeys(PassOwnPtr<Vector<double> > keys)
88 {
89 ASSERT(keys && !keys->isEmpty());
90 m_keys = keys;
91 m_keyText = String();
92 ASSERT(m_keyText.isNull());
93 }
94
mutableProperties()95 MutableStylePropertySet& StyleKeyframe::mutableProperties()
96 {
97 if (!m_properties->isMutable())
98 m_properties = m_properties->mutableCopy();
99 return *toMutableStylePropertySet(m_properties);
100 }
101
setProperties(PassRefPtr<StylePropertySet> properties)102 void StyleKeyframe::setProperties(PassRefPtr<StylePropertySet> properties)
103 {
104 ASSERT(properties);
105 m_properties = properties;
106 }
107
cssText() const108 String StyleKeyframe::cssText() const
109 {
110 StringBuilder result;
111 result.append(keyText());
112 result.appendLiteral(" { ");
113 String decls = m_properties->asText();
114 result.append(decls);
115 if (!decls.isEmpty())
116 result.append(' ');
117 result.append('}');
118 return result.toString();
119 }
120
createKeyList(CSSParserValueList * keys)121 PassOwnPtr<Vector<double> > StyleKeyframe::createKeyList(CSSParserValueList* keys)
122 {
123 OwnPtr<Vector<double> > keyVector = adoptPtr(new Vector<double>(keys->size()));
124 for (unsigned i = 0; i < keys->size(); ++i) {
125 ASSERT(keys->valueAt(i)->unit == WebCore::CSSPrimitiveValue::CSS_NUMBER);
126 double key = keys->valueAt(i)->fValue;
127 if (key < 0 || key > 100) {
128 // As per http://www.w3.org/TR/css3-animations/#keyframes,
129 // "If a keyframe selector specifies negative percentage values
130 // or values higher than 100%, then the keyframe will be ignored."
131 keyVector->clear();
132 break;
133 }
134 keyVector->at(i) = key / 100;
135 }
136 return keyVector.release();
137 }
138
139
CSSKeyframeRule(StyleKeyframe * keyframe,CSSKeyframesRule * parent)140 CSSKeyframeRule::CSSKeyframeRule(StyleKeyframe* keyframe, CSSKeyframesRule* parent)
141 : CSSRule(0)
142 , m_keyframe(keyframe)
143 {
144 setParentRule(parent);
145 }
146
~CSSKeyframeRule()147 CSSKeyframeRule::~CSSKeyframeRule()
148 {
149 #if !ENABLE(OILPAN)
150 if (m_propertiesCSSOMWrapper)
151 m_propertiesCSSOMWrapper->clearParentRule();
152 #endif
153 }
154
style() const155 CSSStyleDeclaration* CSSKeyframeRule::style() const
156 {
157 if (!m_propertiesCSSOMWrapper)
158 m_propertiesCSSOMWrapper = StyleRuleCSSStyleDeclaration::create(m_keyframe->mutableProperties(), const_cast<CSSKeyframeRule*>(this));
159 return m_propertiesCSSOMWrapper.get();
160 }
161
reattach(StyleRuleBase *)162 void CSSKeyframeRule::reattach(StyleRuleBase*)
163 {
164 // No need to reattach, the underlying data is shareable on mutation.
165 ASSERT_NOT_REACHED();
166 }
167
trace(Visitor * visitor)168 void CSSKeyframeRule::trace(Visitor* visitor)
169 {
170 visitor->trace(m_keyframe);
171 visitor->trace(m_propertiesCSSOMWrapper);
172 CSSRule::trace(visitor);
173 }
174
175 } // namespace WebCore
176