1/*
2 * Copyright (C) 2009 Google 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "V8HTMLCollection.h"
33
34#include "HTMLCollection.h"
35#include "V8Binding.h"
36#include "V8HTMLAllCollection.h"
37#include "V8NamedNodesCollection.h"
38#include "V8Node.h"
39#include "V8NodeList.h"
40#include "V8Proxy.h"
41
42namespace WebCore {
43
44static v8::Handle<v8::Value> getNamedItems(HTMLCollection* collection, AtomicString name)
45{
46    Vector<RefPtr<Node> > namedItems;
47    collection->namedItems(name, namedItems);
48
49    if (!namedItems.size())
50        return v8::Handle<v8::Value>();
51
52    if (namedItems.size() == 1)
53        return toV8(namedItems.at(0).release());
54
55    return toV8(V8NamedNodesCollection::create(namedItems));
56}
57
58static v8::Handle<v8::Value> getItem(HTMLCollection* collection, v8::Handle<v8::Value> argument)
59{
60    v8::Local<v8::Uint32> index = argument->ToArrayIndex();
61    if (index.IsEmpty()) {
62        v8::Local<v8::String> asString = argument->ToString();
63        if (asString.IsEmpty())
64            return v8::Handle<v8::Value>();
65        v8::Handle<v8::Value> result = getNamedItems(collection, toWebCoreString(asString));
66
67        if (result.IsEmpty())
68            return v8::Undefined();
69
70        return result;
71    }
72
73    RefPtr<Node> result = collection->item(index->Uint32Value());
74    return toV8(result.release());
75}
76
77v8::Handle<v8::Value> V8HTMLCollection::namedPropertyGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
78{
79    INC_STATS("DOM.HTMLCollection.NamedPropertyGetter");
80    // Search the prototype chain first.
81    v8::Handle<v8::Value> value = info.Holder()->GetRealNamedPropertyInPrototypeChain(name);
82
83    if (!value.IsEmpty())
84        return value;
85
86    // Search local callback properties next to find IDL defined
87    // properties.
88    if (info.Holder()->HasRealNamedCallbackProperty(name))
89        return v8::Handle<v8::Value>();
90
91    // Finally, search the DOM structure.
92    HTMLCollection* imp = V8HTMLCollection::toNative(info.Holder());
93    return getNamedItems(imp, v8StringToAtomicWebCoreString(name));
94}
95
96v8::Handle<v8::Value> V8HTMLCollection::itemCallback(const v8::Arguments& args)
97{
98    INC_STATS("DOM.HTMLCollection.item()");
99    HTMLCollection* imp = V8HTMLCollection::toNative(args.Holder());
100    return getItem(imp, args[0]);
101}
102
103v8::Handle<v8::Value> V8HTMLCollection::namedItemCallback(const v8::Arguments& args)
104{
105    INC_STATS("DOM.HTMLCollection.namedItem()");
106    HTMLCollection* imp = V8HTMLCollection::toNative(args.Holder());
107    v8::Handle<v8::Value> result = getNamedItems(imp, toWebCoreString(args[0]));
108
109    if (result.IsEmpty())
110        return v8::Undefined();
111
112    return result;
113}
114
115v8::Handle<v8::Value> V8HTMLCollection::callAsFunctionCallback(const v8::Arguments& args)
116{
117    INC_STATS("DOM.HTMLCollection.callAsFunction()");
118    if (args.Length() < 1)
119        return v8::Undefined();
120
121    HTMLCollection* imp = V8HTMLCollection::toNative(args.Holder());
122
123    if (args.Length() == 1)
124        return getItem(imp, args[0]);
125
126    // If there is a second argument it is the index of the item we want.
127    String name = toWebCoreString(args[0]);
128    v8::Local<v8::Uint32> index = args[1]->ToArrayIndex();
129    if (index.IsEmpty())
130        return v8::Undefined();
131
132    unsigned current = index->Uint32Value();
133    Node* node = imp->namedItem(name);
134    while (node) {
135        if (!current)
136            return toV8(node);
137
138        node = imp->nextNamedItem(name);
139        current--;
140    }
141
142    return v8::Undefined();
143}
144
145v8::Handle<v8::Value> toV8(HTMLCollection* impl)
146{
147    if (impl->type() == DocAll)
148        return toV8(static_cast<HTMLAllCollection*>(impl));
149    return V8HTMLCollection::wrap(impl);
150}
151
152} // namespace WebCore
153