1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2001 Peter Kelly (pmk@post.com)
5 * (C) 2001 Dirk Mueller (mueller@kde.org)
6 * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 */
23
24 #include "config.h"
25 #include "Attribute.h"
26
27 #include "Attr.h"
28 #include "Element.h"
29 #include <wtf/HashMap.h>
30 #include <wtf/UnusedParam.h>
31
32 namespace WebCore {
33
34 typedef HashMap<Attribute*, Attr*> AttributeAttrMap;
attributeAttrMap()35 static AttributeAttrMap& attributeAttrMap()
36 {
37 DEFINE_STATIC_LOCAL(AttributeAttrMap, map, ());
38 return map;
39 }
40
clone() const41 PassRefPtr<Attribute> Attribute::clone() const
42 {
43 return adoptRef(new Attribute(m_name, m_value, m_isMappedAttribute, m_styleDecl.get()));
44 }
45
attr() const46 Attr* Attribute::attr() const
47 {
48 if (m_hasAttr) {
49 ASSERT(attributeAttrMap().contains(const_cast<Attribute*>(this)));
50 return attributeAttrMap().get(const_cast<Attribute*>(this));
51 }
52
53 ASSERT(!attributeAttrMap().contains(const_cast<Attribute*>(this)));
54 return 0;
55 }
56
createAttrIfNeeded(Element * e)57 PassRefPtr<Attr> Attribute::createAttrIfNeeded(Element* e)
58 {
59 RefPtr<Attr> r;
60 if (m_hasAttr) {
61 ASSERT(attributeAttrMap().contains(this));
62 r = attributeAttrMap().get(this);
63 } else {
64 ASSERT(!attributeAttrMap().contains(this));
65 r = Attr::create(e, e->document(), this); // This will end up calling Attribute::bindAttr.
66 ASSERT(attributeAttrMap().contains(this));
67 }
68
69 return r.release();
70 }
71
bindAttr(Attr * attr)72 void Attribute::bindAttr(Attr* attr)
73 {
74 ASSERT(!m_hasAttr);
75 ASSERT(!attributeAttrMap().contains(this));
76 attributeAttrMap().set(this, attr);
77 m_hasAttr = true;
78 }
79
unbindAttr(Attr * attr)80 void Attribute::unbindAttr(Attr* attr)
81 {
82 ASSERT(m_hasAttr);
83 ASSERT(attributeAttrMap().contains(this));
84 ASSERT_UNUSED(attr, attributeAttrMap().get(this) == attr);
85 attributeAttrMap().remove(this);
86 m_hasAttr = false;
87 }
88
89 } // namespace WebCore
90