Home | History | Annotate | Download | only in custom 
      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 
     38 namespace blink {
     39 
     40 using namespace WTF;
     41 
     42 V8ArrayBufferDeallocationObserver* V8ArrayBufferDeallocationObserver::instanceTemplate()
     43 {
     44     DEFINE_STATIC_LOCAL(V8ArrayBufferDeallocationObserver, deallocationObserver, ());
     45     return &deallocationObserver;
     46 }
     47 
     48 const 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 
     61 bool V8ArrayBuffer::hasInstance(v8::Handle<v8::Value> value, v8::Isolate*)
     62 {
     63     return value->IsArrayBuffer();
     64 }
     65 
     66 void V8ArrayBuffer::refObject(ScriptWrappableBase* internalPointer)
     67 {
     68     toImpl(internalPointer)->ref();
     69 }
     70 
     71 void V8ArrayBuffer::derefObject(ScriptWrappableBase* internalPointer)
     72 {
     73     toImpl(internalPointer)->deref();
     74 }
     75 
     76 WrapperPersistentNode* V8ArrayBuffer::createPersistentHandle(ScriptWrappableBase* internalPointer)
     77 {
     78     ASSERT_NOT_REACHED();
     79     return 0;
     80 }
     81 
     82 v8::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 
     94 ArrayBuffer* 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 
    112 ArrayBuffer* 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 
    117 template<>
    118 v8::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