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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "bindings/core/v8/V8DOMWrapper.h"
#include "bindings/core/v8/V8Binding.h"
#include "bindings/core/v8/V8HTMLCollection.h"
#include "bindings/core/v8/V8HTMLDocument.h"
#include "bindings/core/v8/V8ObjectConstructor.h"
#include "bindings/core/v8/V8PerContextData.h"
#include "bindings/core/v8/V8ScriptRunner.h"
#include "bindings/core/v8/V8Window.h"
namespace blink {
static v8::Local<v8::Object> wrapInShadowTemplate(v8::Local<v8::Object> wrapper, ScriptWrappable* scriptWrappable, v8::Isolate* isolate)
{
static int shadowTemplateKey; // This address is used for a key to look up the dom template.
V8PerIsolateData* data = V8PerIsolateData::from(isolate);
v8::Handle<v8::FunctionTemplate> shadowTemplate = data->existingDOMTemplate(&shadowTemplateKey);
if (shadowTemplate.IsEmpty()) {
shadowTemplate = v8::FunctionTemplate::New(isolate);
if (shadowTemplate.IsEmpty())
return v8::Local<v8::Object>();
shadowTemplate->SetClassName(v8AtomicString(isolate, "HTMLDocument"));
shadowTemplate->Inherit(V8HTMLDocument::domTemplate(isolate));
shadowTemplate->InstanceTemplate()->SetInternalFieldCount(V8HTMLDocument::internalFieldCount);
data->setDOMTemplate(&shadowTemplateKey, shadowTemplate);
}
v8::Local<v8::Function> shadowConstructor = shadowTemplate->GetFunction();
if (shadowConstructor.IsEmpty())
return v8::Local<v8::Object>();
v8::Local<v8::Object> shadow = V8ScriptRunner::instantiateObject(isolate, shadowConstructor);
if (shadow.IsEmpty())
return v8::Local<v8::Object>();
shadow->SetPrototype(wrapper);
V8DOMWrapper::setNativeInfo(wrapper, &V8HTMLDocument::wrapperTypeInfo, scriptWrappable);
return shadow;
}
v8::Local<v8::Object> V8DOMWrapper::createWrapper(v8::Isolate* isolate, v8::Handle<v8::Object> creationContext, const WrapperTypeInfo* type, ScriptWrappable* scriptWrappable)
{
V8WrapperInstantiationScope scope(creationContext, isolate);
V8PerContextData* perContextData = V8PerContextData::from(scope.context());
v8::Local<v8::Object> wrapper = perContextData ? perContextData->createWrapperFromCache(type) : V8ObjectConstructor::newInstance(isolate, type->domTemplate(isolate)->GetFunction());
if (type == &V8HTMLDocument::wrapperTypeInfo && !wrapper.IsEmpty())
wrapper = wrapInShadowTemplate(wrapper, scriptWrappable, isolate);
return wrapper;
}
bool V8DOMWrapper::isDOMWrapper(v8::Handle<v8::Value> value)
{
if (value.IsEmpty() || !value->IsObject())
return false;
if (v8::Handle<v8::Object>::Cast(value)->InternalFieldCount() < v8DefaultWrapperInternalFieldCount)
return false;
v8::Handle<v8::Object> wrapper = v8::Handle<v8::Object>::Cast(value);
ASSERT(wrapper->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex));
ASSERT(wrapper->GetAlignedPointerFromInternalField(v8DOMWrapperTypeIndex));
const WrapperTypeInfo* typeInfo = static_cast<const WrapperTypeInfo*>(wrapper->GetAlignedPointerFromInternalField(v8DOMWrapperTypeIndex));
// FIXME: We should add a more strict way to check if the typeInfo is a typeInfo of some DOM wrapper.
// Even if it's a typeInfo of Blink, it's not guaranteed that it's a typeInfo of a DOM wrapper.
return typeInfo->ginEmbedder == gin::kEmbedderBlink;
}
} // namespace blink
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