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 "bindings/core/v8/custom/V8ArrayBufferCustom.h"
33
34#include "bindings/core/v8/V8Binding.h"
35#include "wtf/ArrayBuffer.h"
36#include "wtf/StdLibExtras.h"
37
38namespace blink {
39
40using namespace WTF;
41
42V8ArrayBufferDeallocationObserver* V8ArrayBufferDeallocationObserver::instanceTemplate()
43{
44    DEFINE_STATIC_LOCAL(V8ArrayBufferDeallocationObserver, deallocationObserver, ());
45    return &deallocationObserver;
46}
47
48const WrapperTypeInfo V8ArrayBuffer::wrapperTypeInfo = {
49    gin::kEmbedderBlink,
50    0,
51    V8ArrayBuffer::refObject,
52    V8ArrayBuffer::derefObject,
53    V8ArrayBuffer::createPersistentHandle,
54    0, 0, 0, 0, 0, 0,
55    WrapperTypeInfo::WrapperTypeObjectPrototype,
56    WrapperTypeInfo::ObjectClassId,
57    WrapperTypeInfo::Independent,
58    WrapperTypeInfo::RefCountedObject
59};
60
61bool V8ArrayBuffer::hasInstance(v8::Handle<v8::Value> value, v8::Isolate*)
62{
63    return value->IsArrayBuffer();
64}
65
66void V8ArrayBuffer::refObject(ScriptWrappableBase* internalPointer)
67{
68    toImpl(internalPointer)->ref();
69}
70
71void V8ArrayBuffer::derefObject(ScriptWrappableBase* internalPointer)
72{
73    toImpl(internalPointer)->deref();
74}
75
76WrapperPersistentNode* V8ArrayBuffer::createPersistentHandle(ScriptWrappableBase* internalPointer)
77{
78    ASSERT_NOT_REACHED();
79    return 0;
80}
81
82v8::Handle<v8::Object> V8ArrayBuffer::createWrapper(PassRefPtr<ArrayBuffer> impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
83{
84    ASSERT(impl.get());
85    ASSERT(!DOMDataStore::containsWrapper<V8ArrayBuffer>(impl.get(), isolate));
86
87    v8::Handle<v8::Object> wrapper = v8::ArrayBuffer::New(isolate, impl->data(), impl->byteLength());
88    impl->setDeallocationObserver(V8ArrayBufferDeallocationObserver::instanceTemplate());
89
90    V8DOMWrapper::associateObjectWithWrapper<V8ArrayBuffer>(impl, &wrapperTypeInfo, wrapper, isolate);
91    return wrapper;
92}
93
94ArrayBuffer* V8ArrayBuffer::toImpl(v8::Handle<v8::Object> object)
95{
96    ASSERT(object->IsArrayBuffer());
97    v8::Local<v8::ArrayBuffer> v8buffer = object.As<v8::ArrayBuffer>();
98    if (v8buffer->IsExternal()) {
99        RELEASE_ASSERT(toWrapperTypeInfo(object)->ginEmbedder == gin::kEmbedderBlink);
100        return reinterpret_cast<ArrayBuffer*>(blink::toScriptWrappableBase(object));
101    }
102
103    v8::ArrayBuffer::Contents v8Contents = v8buffer->Externalize();
104    ArrayBufferContents contents(v8Contents.Data(), v8Contents.ByteLength(),
105        V8ArrayBufferDeallocationObserver::instanceTemplate());
106    RefPtr<ArrayBuffer> buffer = ArrayBuffer::create(contents);
107    V8DOMWrapper::associateObjectWithWrapper<V8ArrayBuffer>(buffer.release(), &wrapperTypeInfo, object, v8::Isolate::GetCurrent());
108
109    return reinterpret_cast<ArrayBuffer*>(blink::toScriptWrappableBase(object));
110}
111
112ArrayBuffer* V8ArrayBuffer::toImplWithTypeCheck(v8::Isolate* isolate, v8::Handle<v8::Value> value)
113{
114    return V8ArrayBuffer::hasInstance(value, isolate) ? V8ArrayBuffer::toImpl(v8::Handle<v8::Object>::Cast(value)) : 0;
115}
116
117template<>
118v8::Handle<v8::Value> toV8NoInline(ArrayBuffer* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
119{
120    return toV8(impl, creationContext, isolate);
121}
122
123} // namespace blink
124