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/CSSParser.h"
31 #include "core/css/PropertySetCSSStyleDeclaration.h"
32 #include "core/css/StylePropertySet.h"
33 #include "wtf/text/StringBuilder.h"
34
35 namespace WebCore {
36
StyleKeyframe()37 StyleKeyframe::StyleKeyframe()
38 {
39 }
40
~StyleKeyframe()41 StyleKeyframe::~StyleKeyframe()
42 {
43 }
44
keyText() const45 String StyleKeyframe::keyText() const
46 {
47 if (m_keyText.isNull()) {
48 // Keys are always set when these objects are created.
49 ASSERT(m_keys && !m_keys->isEmpty());
50 StringBuilder keyText;
51 for (unsigned i = 0; i < m_keys->size(); ++i) {
52 if (i)
53 keyText.append(',');
54 keyText.append(String::number(m_keys->at(i) * 100));
55 keyText.append('%');
56 }
57 m_keyText = keyText.toString();
58 }
59 ASSERT(!m_keyText.isNull());
60 return m_keyText;
61 }
62
setKeyText(const String & keyText)63 void StyleKeyframe::setKeyText(const String& keyText)
64 {
65 // FIXME: Should we trim whitespace?
66 // FIXME: Should we leave keyText unchanged when attempting to set to an
67 // invalid string?
68 ASSERT(!keyText.isNull());
69 m_keyText = keyText;
70 m_keys.clear();
71 }
72
keys() const73 const Vector<double>& StyleKeyframe::keys() const
74 {
75 if (!m_keys) {
76 // Keys can only be cleared by setting the key text from JavaScript
77 // and this can never be null.
78 ASSERT(!m_keyText.isNull());
79 m_keys = CSSParser(HTMLStandardMode).parseKeyframeKeyList(m_keyText);
80 }
81 // If an invalid key string was set, m_keys may be empty.
82 ASSERT(m_keys);
83 return *m_keys;
84 }
85
setKeys(PassOwnPtr<Vector<double>> keys)86 void StyleKeyframe::setKeys(PassOwnPtr<Vector<double> > keys)
87 {
88 ASSERT(keys && !keys->isEmpty());
89 m_keys = keys;
90 m_keyText = String();
91 ASSERT(m_keyText.isNull());
92 }
93
mutableProperties()94 MutableStylePropertySet* StyleKeyframe::mutableProperties()
95 {
96 if (!m_properties->isMutable())
97 m_properties = m_properties->mutableCopy();
98 return toMutableStylePropertySet(m_properties);
99 }
100
setProperties(PassRefPtr<StylePropertySet> properties)101 void StyleKeyframe::setProperties(PassRefPtr<StylePropertySet> properties)
102 {
103 m_properties = properties;
104 }
105
cssText() const106 String StyleKeyframe::cssText() const
107 {
108 StringBuilder result;
109 result.append(keyText());
110 result.appendLiteral(" { ");
111 String decls = m_properties->asText();
112 result.append(decls);
113 if (!decls.isEmpty())
114 result.append(' ');
115 result.append('}');
116 return result.toString();
117 }
118
createKeyList(CSSParserValueList * keys)119 PassOwnPtr<Vector<double> > StyleKeyframe::createKeyList(CSSParserValueList* keys)
120 {
121 OwnPtr<Vector<double> > keyVector = adoptPtr(new Vector<double>(keys->size()));
122 for (unsigned i = 0; i < keys->size(); ++i) {
123 ASSERT(keys->valueAt(i)->unit == WebCore::CSSPrimitiveValue::CSS_NUMBER);
124 double key = keys->valueAt(i)->fValue;
125 if (key < 0 || key > 100) {
126 // As per http://www.w3.org/TR/css3-animations/#keyframes,
127 // "If a keyframe selector specifies negative percentage values
128 // or values higher than 100%, then the keyframe will be ignored."
129 keyVector->clear();
130 break;
131 }
132 keyVector->at(i) = key / 100;
133 }
134 return keyVector.release();
135 }
136
137
CSSKeyframeRule(StyleKeyframe * keyframe,CSSKeyframesRule * parent)138 CSSKeyframeRule::CSSKeyframeRule(StyleKeyframe* keyframe, CSSKeyframesRule* parent)
139 : CSSRule(0)
140 , m_keyframe(keyframe)
141 {
142 setParentRule(parent);
143 }
144
~CSSKeyframeRule()145 CSSKeyframeRule::~CSSKeyframeRule()
146 {
147 if (m_propertiesCSSOMWrapper)
148 m_propertiesCSSOMWrapper->clearParentRule();
149 }
150
style() const151 CSSStyleDeclaration* CSSKeyframeRule::style() const
152 {
153 if (!m_propertiesCSSOMWrapper)
154 m_propertiesCSSOMWrapper = StyleRuleCSSStyleDeclaration::create(m_keyframe->mutableProperties(), const_cast<CSSKeyframeRule*>(this));
155 return m_propertiesCSSOMWrapper.get();
156 }
157
reattach(StyleRuleBase *)158 void CSSKeyframeRule::reattach(StyleRuleBase*)
159 {
160 // No need to reattach, the underlying data is shareable on mutation.
161 ASSERT_NOT_REACHED();
162 }
163
164 } // namespace WebCore
165