1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * Copyright (C) 2003, 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23 #include "config.h"
24 #include "HTMLNameCollection.h"
25
26 #include "Element.h"
27 #include "HTMLDocument.h"
28 #include "HTMLNames.h"
29 #include "HTMLObjectElement.h"
30
31 namespace WebCore {
32
33 using namespace HTMLNames;
34
HTMLNameCollection(PassRefPtr<Document> document,Type type,const String & name)35 HTMLNameCollection::HTMLNameCollection(PassRefPtr<Document> document, Type type, const String& name)
36 : HTMLCollection(document.get(), type, document->nameCollectionInfo(type, name))
37 , m_name(name)
38 {
39 }
40
itemAfter(Element * previous) const41 Element* HTMLNameCollection::itemAfter(Element* previous) const
42 {
43 ASSERT(previous != base());
44
45 Node* current;
46 if (!previous)
47 current = base()->firstChild();
48 else
49 current = previous->traverseNextNode(base());
50
51 for (; current; current = current->traverseNextNode(base())) {
52 if (!current->isElementNode())
53 continue;
54 Element* e = static_cast<Element*>(current);
55 switch (type()) {
56 case WindowNamedItems:
57 // find only images, forms, applets, embeds and objects by name,
58 // but anything by id
59 if (e->hasTagName(imgTag) ||
60 e->hasTagName(formTag) ||
61 e->hasTagName(appletTag) ||
62 e->hasTagName(embedTag) ||
63 e->hasTagName(objectTag))
64 if (e->getAttribute(nameAttr) == m_name)
65 return e;
66 if (e->getAttribute(idAttr) == m_name)
67 return e;
68 break;
69 case DocumentNamedItems:
70 // find images, forms, applets, embeds, objects and iframes by name,
71 // applets and object by id, and images by id but only if they have
72 // a name attribute (this very strange rule matches IE)
73 if (e->hasTagName(formTag) || e->hasTagName(embedTag) || e->hasTagName(iframeTag)) {
74 if (e->getAttribute(nameAttr) == m_name)
75 return e;
76 } else if (e->hasTagName(appletTag)) {
77 if (e->getAttribute(nameAttr) == m_name || e->getAttribute(idAttr) == m_name)
78 return e;
79 } else if (e->hasTagName(objectTag)) {
80 if ((e->getAttribute(nameAttr) == m_name || e->getAttribute(idAttr) == m_name)
81 && static_cast<HTMLObjectElement*>(e)->isDocNamedItem())
82 return e;
83 } else if (e->hasTagName(imgTag)) {
84 if (e->getAttribute(nameAttr) == m_name || (e->getAttribute(idAttr) == m_name && e->hasAttribute(nameAttr)))
85 return e;
86 }
87 break;
88 default:
89 ASSERT_NOT_REACHED();
90 }
91 }
92
93 return 0;
94 }
95
96 }
97