sky/engine/bindings/core/v8/V8DOMWrapper.cpp

/*
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#include "sky/engine/config.h"
#include "sky/engine/bindings/core/v8/V8DOMWrapper.h"

#include "bindings/core/v8/V8HTMLDocument.h"
#include "bindings/core/v8/V8Window.h"
#include "sky/engine/bindings/core/v8/V8Binding.h"
#include "sky/engine/bindings/core/v8/V8ObjectConstructor.h"
#include "sky/engine/bindings/core/v8/V8PerContextData.h"
#include "sky/engine/bindings/core/v8/V8ScriptRunner.h"

namespace blink {

v8::Local<v8::Object> V8DOMWrapper::createWrapper(v8::Handle<v8::Object> creationContext, const WrapperTypeInfo* type, ScriptWrappableBase* internalPointer, v8::Isolate* isolate)
{
    V8WrapperInstantiationScope scope(creationContext, isolate);

    V8PerContextData* data = V8PerContextData::from(scope.context());
    if (data)
        return data->createWrapperFromCache(type);
    return V8ObjectConstructor::newInstance(isolate, type->domTemplate(isolate)->GetFunction());
}

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