1 /*
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21 #include "config.h"
22 #include "CSSStyleDeclaration.h"
23
24 #include "CSSMutableStyleDeclaration.h"
25 #include "CSSParser.h"
26 #include "CSSProperty.h"
27 #include "CSSPropertyNames.h"
28 #include "CSSRule.h"
29 #include <wtf/ASCIICType.h>
30 #include <wtf/text/CString.h>
31
32 using namespace WTF;
33
34 namespace WebCore {
35
CSSStyleDeclaration(CSSRule * parent)36 CSSStyleDeclaration::CSSStyleDeclaration(CSSRule* parent)
37 : StyleBase(parent)
38 {
39 }
40
getPropertyCSSValue(const String & propertyName)41 PassRefPtr<CSSValue> CSSStyleDeclaration::getPropertyCSSValue(const String& propertyName)
42 {
43 int propID = cssPropertyID(propertyName);
44 if (!propID)
45 return 0;
46 return getPropertyCSSValue(propID);
47 }
48
getPropertyValue(const String & propertyName)49 String CSSStyleDeclaration::getPropertyValue(const String &propertyName)
50 {
51 int propID = cssPropertyID(propertyName);
52 if (!propID)
53 return String();
54 return getPropertyValue(propID);
55 }
56
getPropertyPriority(const String & propertyName)57 String CSSStyleDeclaration::getPropertyPriority(const String& propertyName)
58 {
59 int propID = cssPropertyID(propertyName);
60 if (!propID)
61 return String();
62 return getPropertyPriority(propID) ? "important" : "";
63 }
64
getPropertyShorthand(const String & propertyName)65 String CSSStyleDeclaration::getPropertyShorthand(const String& propertyName)
66 {
67 int propID = cssPropertyID(propertyName);
68 if (!propID)
69 return String();
70 int shorthandID = getPropertyShorthand(propID);
71 if (!shorthandID)
72 return String();
73 return getPropertyName(static_cast<CSSPropertyID>(shorthandID));
74 }
75
isPropertyImplicit(const String & propertyName)76 bool CSSStyleDeclaration::isPropertyImplicit(const String& propertyName)
77 {
78 int propID = cssPropertyID(propertyName);
79 if (!propID)
80 return false;
81 return isPropertyImplicit(propID);
82 }
83
setProperty(const String & propertyName,const String & value,ExceptionCode & ec)84 void CSSStyleDeclaration::setProperty(const String& propertyName, const String& value, ExceptionCode& ec)
85 {
86 size_t important = value.find("!important", 0, false);
87 int propertyID = cssPropertyID(propertyName);
88 if (!propertyID)
89 return;
90 if (important == notFound)
91 setProperty(propertyID, value, false, ec);
92 else
93 setProperty(propertyID, value.left(important - 1), true, ec);
94 }
95
setProperty(const String & propertyName,const String & value,const String & priority,ExceptionCode & ec)96 void CSSStyleDeclaration::setProperty(const String& propertyName, const String& value, const String& priority, ExceptionCode& ec)
97 {
98 int propID = cssPropertyID(propertyName);
99 if (!propID) {
100 // FIXME: Should we raise an exception here?
101 return;
102 }
103 bool important = priority.find("important", 0, false) != notFound;
104 setProperty(propID, value, important, ec);
105 }
106
removeProperty(const String & propertyName,ExceptionCode & ec)107 String CSSStyleDeclaration::removeProperty(const String& propertyName, ExceptionCode& ec)
108 {
109 int propID = cssPropertyID(propertyName);
110 if (!propID)
111 return String();
112 return removeProperty(propID, ec);
113 }
114
isPropertyName(const String & propertyName)115 bool CSSStyleDeclaration::isPropertyName(const String& propertyName)
116 {
117 return cssPropertyID(propertyName);
118 }
119
parentRule() const120 CSSRule* CSSStyleDeclaration::parentRule() const
121 {
122 return (parent() && parent()->isRule()) ? static_cast<CSSRule*>(parent()) : 0;
123 }
124
cssPropertyMatches(const CSSProperty * property) const125 bool CSSStyleDeclaration::cssPropertyMatches(const CSSProperty* property) const
126 {
127 RefPtr<CSSValue> value = getPropertyCSSValue(property->id());
128 return value && value->cssText() == property->value()->cssText();
129 }
130
diff(CSSMutableStyleDeclaration * style) const131 void CSSStyleDeclaration::diff(CSSMutableStyleDeclaration* style) const
132 {
133 if (!style)
134 return;
135
136 Vector<int> propertiesToRemove;
137 {
138 CSSMutableStyleDeclaration::const_iterator end = style->end();
139 for (CSSMutableStyleDeclaration::const_iterator it = style->begin(); it != end; ++it) {
140 const CSSProperty& property = *it;
141 if (cssPropertyMatches(&property))
142 propertiesToRemove.append(property.id());
143 }
144 }
145
146 // FIXME: This should use mass removal.
147 for (unsigned i = 0; i < propertiesToRemove.size(); i++)
148 style->removeProperty(propertiesToRemove[i]);
149 }
150
copyPropertiesInSet(const int * set,unsigned length) const151 PassRefPtr<CSSMutableStyleDeclaration> CSSStyleDeclaration::copyPropertiesInSet(const int* set, unsigned length) const
152 {
153 Vector<CSSProperty> list;
154 list.reserveInitialCapacity(length);
155 for (unsigned i = 0; i < length; i++) {
156 RefPtr<CSSValue> value = getPropertyCSSValue(set[i]);
157 if (value)
158 list.append(CSSProperty(set[i], value.release(), false));
159 }
160 return CSSMutableStyleDeclaration::create(list);
161 }
162
163 } // namespace WebCore
164