1 /**
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2006 Apple Computer, Inc.
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 #include "config.h"
21 #include "StyleSheet.h"
22
23 #include "MediaList.h"
24 #include "Node.h"
25
26 namespace WebCore {
27
StyleSheet(StyleSheet * parentSheet,const String & originalURL,const KURL & finalURL)28 StyleSheet::StyleSheet(StyleSheet* parentSheet, const String& originalURL, const KURL& finalURL)
29 : StyleList(parentSheet)
30 , m_parentNode(0)
31 , m_originalURL(originalURL)
32 , m_finalURL(finalURL)
33 , m_disabled(false)
34 {
35 }
36
StyleSheet(Node * parentNode,const String & originalURL,const KURL & finalURL)37 StyleSheet::StyleSheet(Node* parentNode, const String& originalURL, const KURL& finalURL)
38 : StyleList(0)
39 , m_parentNode(parentNode)
40 , m_originalURL(originalURL)
41 , m_finalURL(finalURL)
42 , m_disabled(false)
43 {
44 }
45
StyleSheet(StyleBase * owner,const String & originalURL,const KURL & finalURL)46 StyleSheet::StyleSheet(StyleBase* owner, const String& originalURL, const KURL& finalURL)
47 : StyleList(owner)
48 , m_parentNode(0)
49 , m_originalURL(originalURL)
50 , m_finalURL(finalURL)
51 , m_disabled(false)
52 {
53 }
54
~StyleSheet()55 StyleSheet::~StyleSheet()
56 {
57 if (m_media)
58 m_media->setParent(0);
59
60 // For style rules outside the document, .parentStyleSheet can become null even if the style rule
61 // is still observable from JavaScript. This matches the behavior of .parentNode for nodes, but
62 // it's not ideal because it makes the CSSOM's behavior depend on the timing of garbage collection.
63 for (unsigned i = 0; i < length(); ++i) {
64 ASSERT(item(i)->parent() == this);
65 item(i)->setParent(0);
66 }
67 }
68
parentStyleSheet() const69 StyleSheet* StyleSheet::parentStyleSheet() const
70 {
71 return (parent() && parent()->isStyleSheet()) ? static_cast<StyleSheet*>(parent()) : 0;
72 }
73
setMedia(PassRefPtr<MediaList> media)74 void StyleSheet::setMedia(PassRefPtr<MediaList> media)
75 {
76 if (m_media)
77 m_media->setParent(0);
78
79 m_media = media;
80 m_media->setParent(this);
81 }
82
completeURL(const String & url) const83 KURL StyleSheet::completeURL(const String& url) const
84 {
85 // Always return a null URL when passed a null string.
86 // FIXME: Should we change the KURL constructor to have this behavior?
87 // See also Document::completeURL(const String&)
88 if (url.isNull())
89 return KURL();
90 return KURL(baseURL(), url);
91 }
92
93 }
94