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

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "sky/engine/config.h"
#include "sky/engine/bindings/core/v8/CustomElementWrapper.h"

#include "bindings/core/v8/V8HTMLElement.h"
#include "core/V8HTMLElementWrapperFactory.h" // FIXME: should be bindings/core/v8
#include "sky/engine/bindings/core/v8/DOMDataStore.h"
#include "sky/engine/bindings/core/v8/DOMWrapperWorld.h"
#include "sky/engine/bindings/core/v8/V8PerContextData.h"
#include "sky/engine/core/dom/custom/CustomElement.h"
#include "sky/engine/core/html/HTMLElement.h"

namespace blink {

template<typename ElementType>
v8::Handle<v8::Object> createDirectWrapper(ElementType*, v8::Handle<v8::Object> creationContext, v8::Isolate*);

template<>
v8::Handle<v8::Object> createDirectWrapper<HTMLElement>(HTMLElement* element, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
{
    return createV8HTMLDirectWrapper(element, creationContext, isolate);
}

template<typename ElementType>
v8::Handle<v8::Object> createUpgradeCandidateWrapper(ElementType* element, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate, v8::Handle<v8::Object> (*createSpecificWrapper)(ElementType* element, v8::Handle<v8::Object> creationContext, v8::Isolate*))
{
    if (CustomElement::isValidName(element->localName()))
        return createDirectWrapper(element, creationContext, isolate);
    if (createSpecificWrapper)
        return createSpecificWrapper(element, creationContext, isolate);
    return createDirectWrapper(element, creationContext, isolate);
}

template<typename ElementType, typename WrapperType>
v8::Handle<v8::Object> CustomElementWrapper<ElementType, WrapperType>::wrap(PassRefPtr<ElementType> element, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate, v8::Handle<v8::Object> (*createSpecificWrapper)(ElementType* element, v8::Handle<v8::Object> creationContext, v8::Isolate*))
{
    ASSERT(DOMDataStore::getWrapper<V8Element>(element.get(), isolate).IsEmpty());

    ASSERT(!creationContext.IsEmpty());
    v8::Handle<v8::Context> context = creationContext->CreationContext();

    if (!element->isUpgradedCustomElement())
        return createUpgradeCandidateWrapper(element.get(), creationContext, isolate, createSpecificWrapper);

    V8PerContextData* perContextData = V8PerContextData::from(context);
    if (!perContextData)
        return v8::Handle<v8::Object>();

    CustomElementBinding* binding = perContextData->customElementBinding(element->customElementDefinition());
    v8::Handle<v8::Object> wrapper = V8DOMWrapper::createWrapper(creationContext, binding->wrapperType(), WrapperType::toScriptWrappableBase(element.get()), isolate);
    if (wrapper.IsEmpty())
        return v8::Handle<v8::Object>();

    wrapper->SetPrototype(binding->prototype());

    ASSERT(binding->wrapperType()->lifetime == WrapperTypeInfo::Dependent);
    V8DOMWrapper::associateObjectWithWrapper<WrapperType>(element, binding->wrapperType(), wrapper, isolate);
    return wrapper;
}

template
class CustomElementWrapper<HTMLElement, V8HTMLElement>;

} // namespace blink