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 int length = m_lstCSSRules->length();
37 for (int i = 0; i < length; i++)
38 m_lstCSSRules->item(i)->setParent(this);
39 }
40
~CSSMediaRule()41 CSSMediaRule::~CSSMediaRule()
42 {
43 if (m_lstMedia)
44 m_lstMedia->setParent(0);
45
46 int length = m_lstCSSRules->length();
47 for (int i = 0; i < length; i++)
48 m_lstCSSRules->item(i)->setParent(0);
49 }
50
append(CSSRule * rule)51 unsigned CSSMediaRule::append(CSSRule* rule)
52 {
53 if (!rule)
54 return 0;
55
56 rule->setParent(this);
57 return m_lstCSSRules->insertRule(rule, m_lstCSSRules->length());
58 }
59
insertRule(const String & rule,unsigned index,ExceptionCode & ec)60 unsigned CSSMediaRule::insertRule(const String& rule, unsigned index, ExceptionCode& ec)
61 {
62 if (index > m_lstCSSRules->length()) {
63 // INDEX_SIZE_ERR: Raised if the specified index is not a valid insertion point.
64 ec = INDEX_SIZE_ERR;
65 return 0;
66 }
67
68 CSSParser p(useStrictParsing());
69 RefPtr<CSSRule> newRule = p.parseRule(parentStyleSheet(), rule);
70 if (!newRule) {
71 // SYNTAX_ERR: Raised if the specified rule has a syntax error and is unparsable.
72 ec = SYNTAX_ERR;
73 return 0;
74 }
75
76 if (newRule->isImportRule()) {
77 // FIXME: an HIERARCHY_REQUEST_ERR should also be thrown for a @charset or a nested
78 // @media rule. They are currently not getting parsed, resulting in a SYNTAX_ERR
79 // to get raised above.
80
81 // HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the specified
82 // index, e.g., if an @import rule is inserted after a standard rule set or other
83 // at-rule.
84 ec = HIERARCHY_REQUEST_ERR;
85 return 0;
86 }
87
88 newRule->setParent(this);
89 unsigned returnedIndex = m_lstCSSRules->insertRule(newRule.get(), index);
90
91 if (stylesheet())
92 stylesheet()->styleSheetChanged();
93
94 return returnedIndex;
95 }
96
deleteRule(unsigned index,ExceptionCode & ec)97 void CSSMediaRule::deleteRule(unsigned index, ExceptionCode& ec)
98 {
99 if (index >= m_lstCSSRules->length()) {
100 // INDEX_SIZE_ERR: Raised if the specified index does not correspond to a
101 // rule in the media rule list.
102 ec = INDEX_SIZE_ERR;
103 return;
104 }
105
106 m_lstCSSRules->deleteRule(index);
107
108 if (stylesheet())
109 stylesheet()->styleSheetChanged();
110 }
111
cssText() const112 String CSSMediaRule::cssText() const
113 {
114 String result = "@media ";
115 if (m_lstMedia) {
116 result += m_lstMedia->mediaText();
117 result += " ";
118 }
119 result += "{ \n";
120
121 if (m_lstCSSRules) {
122 unsigned len = m_lstCSSRules->length();
123 for (unsigned i = 0; i < len; i++) {
124 result += " ";
125 result += m_lstCSSRules->item(i)->cssText();
126 result += "\n";
127 }
128 }
129
130 result += "}";
131 return result;
132 }
133
134 } // namespace WebCore
135