1 /*
2 * Copyright (C) 2007, 2008 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 "WebKitCSSKeyframesRule.h"
28
29 #include "CSSMutableStyleDeclaration.h"
30 #include "CSSParser.h"
31 #include "CSSRuleList.h"
32 #include "StyleSheet.h"
33 #include "WebKitCSSKeyframeRule.h"
34
35 namespace WebCore {
36
WebKitCSSKeyframesRule(CSSStyleSheet * parent)37 WebKitCSSKeyframesRule::WebKitCSSKeyframesRule(CSSStyleSheet* parent)
38 : CSSRule(parent)
39 , m_lstCSSRules(CSSRuleList::create())
40 {
41 }
42
~WebKitCSSKeyframesRule()43 WebKitCSSKeyframesRule::~WebKitCSSKeyframesRule()
44 {
45 int length = m_lstCSSRules->length();
46 if (length == 0)
47 return;
48
49 for (int i = 0; i < length; i++) {
50 if (m_lstCSSRules->item(i)->isKeyframeRule()) {
51 if (CSSMutableStyleDeclaration* style = static_cast<WebKitCSSKeyframeRule*>(m_lstCSSRules->item(i))->style())
52 style->setParent(0);
53 }
54 m_lstCSSRules->item(i)->setParent(0);
55 }
56 }
57
name() const58 String WebKitCSSKeyframesRule::name() const
59 {
60 return m_name;
61 }
62
setName(const String & name)63 void WebKitCSSKeyframesRule::setName(const String& name)
64 {
65 m_name = name;
66
67 // Since the name is used in the keyframe map list in CSSStyleSelector, we need
68 // to recompute the style sheet to get the updated name.
69 if (stylesheet())
70 stylesheet()->styleSheetChanged();
71 }
72
length() const73 unsigned WebKitCSSKeyframesRule::length() const
74 {
75 return m_lstCSSRules.get()->length();
76 }
77
item(unsigned index)78 WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::item(unsigned index)
79 {
80 CSSRule* rule = m_lstCSSRules.get()->item(index);
81 return (rule && rule->isKeyframeRule()) ? static_cast<WebKitCSSKeyframeRule*>(rule) : 0;
82 }
83
item(unsigned index) const84 const WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::item(unsigned index) const
85 {
86 CSSRule* rule = m_lstCSSRules.get()->item(index);
87 return (rule && rule->isKeyframeRule()) ? static_cast<const WebKitCSSKeyframeRule*>(rule) : 0;
88 }
89
append(WebKitCSSKeyframeRule * rule)90 void WebKitCSSKeyframesRule::append(WebKitCSSKeyframeRule* rule)
91 {
92 if (!rule)
93 return;
94
95 m_lstCSSRules->append(rule);
96 rule->setParent(this);
97
98 if (CSSMutableStyleDeclaration* style = rule->style())
99 style->setParent(this);
100 }
101
insertRule(const String & rule)102 void WebKitCSSKeyframesRule::insertRule(const String& rule)
103 {
104 CSSParser p(useStrictParsing());
105 RefPtr<CSSRule> newRule = p.parseKeyframeRule(parentStyleSheet(), rule);
106 if (newRule.get() && newRule.get()->isKeyframeRule())
107 append(static_cast<WebKitCSSKeyframeRule*>(newRule.get()));
108 }
109
deleteRule(const String & s)110 void WebKitCSSKeyframesRule::deleteRule(const String& s)
111 {
112 int i = findRuleIndex(s);
113 if (i >= 0)
114 m_lstCSSRules.get()->deleteRule(i);
115 }
116
findRule(const String & s)117 WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::findRule(const String& s)
118 {
119 int i = findRuleIndex(s);
120 return (i >= 0) ? item(i) : 0;
121 }
122
findRuleIndex(const String & key) const123 int WebKitCSSKeyframesRule::findRuleIndex(const String& key) const
124 {
125 String percentageString;
126 if (equalIgnoringCase(key, "from"))
127 percentageString = "0%";
128 else if (equalIgnoringCase(key, "to"))
129 percentageString = "100%";
130 else
131 percentageString = key;
132
133 for (unsigned i = 0; i < length(); ++i) {
134 if (item(i)->keyText() == percentageString)
135 return i;
136 }
137
138 return -1;
139 }
140
cssText() const141 String WebKitCSSKeyframesRule::cssText() const
142 {
143 String result = "@-webkit-keyframes ";
144 result += m_name;
145 result += " { \n";
146
147 if (m_lstCSSRules) {
148 unsigned len = m_lstCSSRules->length();
149 for (unsigned i = 0; i < len; i++) {
150 result += " ";
151 result += m_lstCSSRules->item(i)->cssText();
152 result += "\n";
153 }
154 }
155
156 result += "}";
157 return result;
158 }
159
160 } // namespace WebCore
161