1 /*
2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "JSNamedNodesCollection.h"
28
29 #include "AtomicString.h"
30 #include "Element.h"
31 #include "JSNode.h"
32 #include "NamedNodeMap.h"
33
34 namespace WebCore {
35
36 using namespace JSC;
37
38 ASSERT_CLASS_FITS_IN_CELL(JSNamedNodesCollection);
39
40 const ClassInfo JSNamedNodesCollection::s_info = { "Collection", 0, 0, 0 };
41
42 // Such a collection is usually very short-lived, it only exists
43 // for constructs like document.forms.<name>[1],
44 // so it shouldn't be a problem that it's storing all the nodes (with the same name). (David)
JSNamedNodesCollection(ExecState * exec,JSDOMGlobalObject * globalObject,const Vector<RefPtr<Node>> & nodes)45 JSNamedNodesCollection::JSNamedNodesCollection(ExecState* exec, JSDOMGlobalObject* globalObject, const Vector<RefPtr<Node> >& nodes)
46 : DOMObjectWithGlobalPointer(getDOMStructure<JSNamedNodesCollection>(exec, globalObject), globalObject)
47 , m_nodes(new Vector<RefPtr<Node> >(nodes))
48 {
49 }
50
lengthGetter(ExecState * exec,const Identifier &,const PropertySlot & slot)51 JSValue JSNamedNodesCollection::lengthGetter(ExecState* exec, const Identifier&, const PropertySlot& slot)
52 {
53 JSNamedNodesCollection* thisObj = static_cast<JSNamedNodesCollection*>(asObject(slot.slotBase()));
54 return jsNumber(exec, thisObj->m_nodes->size());
55 }
56
indexGetter(ExecState * exec,const Identifier &,const PropertySlot & slot)57 JSValue JSNamedNodesCollection::indexGetter(ExecState* exec, const Identifier&, const PropertySlot& slot)
58 {
59 JSNamedNodesCollection *thisObj = static_cast<JSNamedNodesCollection*>(asObject(slot.slotBase()));
60 return toJS(exec, (*thisObj->m_nodes)[slot.index()].get());
61 }
62
getOwnPropertySlot(ExecState * exec,const Identifier & propertyName,PropertySlot & slot)63 bool JSNamedNodesCollection::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
64 {
65 if (propertyName == exec->propertyNames().length) {
66 slot.setCustom(this, lengthGetter);
67 return true;
68 }
69
70 bool ok;
71 unsigned index = propertyName.toUInt32(&ok);
72 if (ok && index < m_nodes->size()) {
73 slot.setCustomIndex(this, index, indexGetter);
74 return true;
75 }
76
77 // For IE compatibility, we need to be able to look up elements in a
78 // document.formName.name result by id as well as be index.
79
80 AtomicString atomicPropertyName = propertyName;
81 for (unsigned i = 0; i < m_nodes->size(); i++) {
82 Node* node = (*m_nodes)[i].get();
83 if (node->hasAttributes() && node->attributes()->id() == atomicPropertyName) {
84 slot.setCustomIndex(this, i, indexGetter);
85 return true;
86 }
87 }
88
89 return DOMObjectWithGlobalPointer::getOwnPropertySlot(exec, propertyName, slot);
90 }
91
92 } // namespace WebCore
93