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 m_lstMedia->setParent(this);
37 int length = m_lstCSSRules->length();
38 for (int i = 0; i < length; i++)
39 m_lstCSSRules->item(i)->setParent(this);
40 }
41
~CSSMediaRule()42 CSSMediaRule::~CSSMediaRule()
43 {
44 if (m_lstMedia)
45 m_lstMedia->setParent(0);
46
47 int length = m_lstCSSRules->length();
48 for (int i = 0; i < length; i++)
49 m_lstCSSRules->item(i)->setParent(0);
50 }
51
append(CSSRule * rule)52 unsigned CSSMediaRule::append(CSSRule* rule)
53 {
54 if (!rule)
55 return 0;
56
57 rule->setParent(this);
58 return m_lstCSSRules->insertRule(rule, m_lstCSSRules->length());
59 }
60
insertRule(const String & rule,unsigned index,ExceptionCode & ec)61 unsigned CSSMediaRule::insertRule(const String& rule, unsigned index, ExceptionCode& ec)
62 {
63 if (index > m_lstCSSRules->length()) {
64 // INDEX_SIZE_ERR: Raised if the specified index is not a valid insertion point.
65 ec = INDEX_SIZE_ERR;
66 return 0;
67 }
68
69 CSSParser p(useStrictParsing());
70 RefPtr<CSSRule> newRule = p.parseRule(parentStyleSheet(), rule);
71 if (!newRule) {
72 // SYNTAX_ERR: Raised if the specified rule has a syntax error and is unparsable.
73 ec = SYNTAX_ERR;
74 return 0;
75 }
76
77 if (newRule->isImportRule()) {
78 // FIXME: an HIERARCHY_REQUEST_ERR should also be thrown for a @charset or a nested
79 // @media rule. They are currently not getting parsed, resulting in a SYNTAX_ERR
80 // to get raised above.
81
82 // HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the specified
83 // index, e.g., if an @import rule is inserted after a standard rule set or other
84 // at-rule.
85 ec = HIERARCHY_REQUEST_ERR;
86 return 0;
87 }
88
89 newRule->setParent(this);
90 unsigned returnedIndex = m_lstCSSRules->insertRule(newRule.get(), index);
91
92 if (stylesheet())
93 stylesheet()->styleSheetChanged();
94
95 return returnedIndex;
96 }
97
deleteRule(unsigned index,ExceptionCode & ec)98 void CSSMediaRule::deleteRule(unsigned index, ExceptionCode& ec)
99 {
100 if (index >= m_lstCSSRules->length()) {
101 // INDEX_SIZE_ERR: Raised if the specified index does not correspond to a
102 // rule in the media rule list.
103 ec = INDEX_SIZE_ERR;
104 return;
105 }
106
107 m_lstCSSRules->deleteRule(index);
108
109 if (stylesheet())
110 stylesheet()->styleSheetChanged();
111 }
112
cssText() const113 String CSSMediaRule::cssText() const
114 {
115 String result = "@media ";
116 if (m_lstMedia) {
117 result += m_lstMedia->mediaText();
118 result += " ";
119 }
120 result += "{ \n";
121
122 if (m_lstCSSRules) {
123 unsigned len = m_lstCSSRules->length();
124 for (unsigned i = 0; i < len; i++) {
125 result += " ";
126 result += m_lstCSSRules->item(i)->cssText();
127 result += "\n";
128 }
129 }
130
131 result += "}";
132 return result;
133 }
134
135 } // namespace WebCore
136