1 /**
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
4 * Copyright (C) 2002, 2005, 2006 Apple Computer, Inc.
5 * Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23 #include "config.h"
24 #include "CSSMediaRule.h"
25
26 #include "CSSParser.h"
27 #include "ExceptionCode.h"
28
29 namespace WebCore {
30
CSSMediaRule(CSSStyleSheet * parent,PassRefPtr<MediaList> media,PassRefPtr<CSSRuleList> rules)31 CSSMediaRule::CSSMediaRule(CSSStyleSheet* parent, PassRefPtr<MediaList> media, PassRefPtr<CSSRuleList> rules)
32 : CSSRule(parent)
33 , m_lstMedia(media)
34 , m_lstCSSRules(rules)
35 {
36 }
37
~CSSMediaRule()38 CSSMediaRule::~CSSMediaRule()
39 {
40 if (m_lstMedia)
41 m_lstMedia->setParent(0);
42
43 int length = m_lstCSSRules->length();
44 for (int i = 0; i < length; i++)
45 m_lstCSSRules->item(i)->setParent(0);
46 }
47
append(CSSRule * rule)48 unsigned CSSMediaRule::append(CSSRule* rule)
49 {
50 if (!rule)
51 return 0;
52
53 rule->setParent(this);
54 return m_lstCSSRules->insertRule(rule, m_lstCSSRules->length());
55 }
56
insertRule(const String & rule,unsigned index,ExceptionCode & ec)57 unsigned CSSMediaRule::insertRule(const String& rule, unsigned index, ExceptionCode& ec)
58 {
59 if (index > m_lstCSSRules->length()) {
60 // INDEX_SIZE_ERR: Raised if the specified index is not a valid insertion point.
61 ec = INDEX_SIZE_ERR;
62 return 0;
63 }
64
65 CSSParser p(useStrictParsing());
66 RefPtr<CSSRule> newRule = p.parseRule(parentStyleSheet(), rule);
67 if (!newRule) {
68 // SYNTAX_ERR: Raised if the specified rule has a syntax error and is unparsable.
69 ec = SYNTAX_ERR;
70 return 0;
71 }
72
73 if (newRule->isImportRule()) {
74 // FIXME: an HIERARCHY_REQUEST_ERR should also be thrown for a @charset or a nested
75 // @media rule. They are currently not getting parsed, resulting in a SYNTAX_ERR
76 // to get raised above.
77
78 // HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the specified
79 // index, e.g., if an @import rule is inserted after a standard rule set or other
80 // at-rule.
81 ec = HIERARCHY_REQUEST_ERR;
82 return 0;
83 }
84
85 newRule->setParent(this);
86 unsigned returnedIndex = m_lstCSSRules->insertRule(newRule.get(), index);
87
88 // stylesheet() can only return 0 for computed style declarations.
89 stylesheet()->styleSheetChanged();
90
91 return returnedIndex;
92 }
93
deleteRule(unsigned index,ExceptionCode & ec)94 void CSSMediaRule::deleteRule(unsigned index, ExceptionCode& ec)
95 {
96 if (index >= m_lstCSSRules->length()) {
97 // INDEX_SIZE_ERR: Raised if the specified index does not correspond to a
98 // rule in the media rule list.
99 ec = INDEX_SIZE_ERR;
100 return;
101 }
102
103 m_lstCSSRules->deleteRule(index);
104
105 // stylesheet() can only return 0 for computed style declarations.
106 stylesheet()->styleSheetChanged();
107 }
108
cssText() const109 String CSSMediaRule::cssText() const
110 {
111 String result = "@media ";
112 if (m_lstMedia) {
113 result += m_lstMedia->mediaText();
114 result += " ";
115 }
116 result += "{ \n";
117
118 if (m_lstCSSRules) {
119 unsigned len = m_lstCSSRules->length();
120 for (unsigned i = 0; i < len; i++) {
121 result += " ";
122 result += m_lstCSSRules->item(i)->cssText();
123 result += "\n";
124 }
125 }
126
127 result += "}";
128 return result;
129 }
130
131 } // namespace WebCore
132