Source/bindings/v8/CustomElementWrapper.cpp

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#include "config.h"
#include "bindings/v8/CustomElementWrapper.h"

#include "V8HTMLElementWrapperFactory.h"
#include "V8SVGElementWrapperFactory.h"
#include "bindings/v8/DOMDataStore.h"
#include "bindings/v8/V8PerContextData.h"
#include "core/dom/CustomElementRegistry.h"
#include "core/html/HTMLElement.h"
#include "core/html/HTMLUnknownElement.h"
#include "core/svg/SVGElement.h"

namespace WebCore {

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<>
v8::Handle<v8::Object> createDirectWrapper<SVGElement>(SVGElement* element, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
{
    return createV8SVGDirectWrapper(element, creationContext, isolate);
}

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

template<>
v8::Handle<v8::Object> createFallbackWrapper<HTMLElement>(HTMLElement* element, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
{
    return createV8HTMLFallbackWrapper(toHTMLUnknownElement(element), creationContext, isolate);
}

template<>
v8::Handle<v8::Object> createFallbackWrapper<SVGElement>(SVGElement* element, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
{
    return createV8SVGFallbackWrapper(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 (CustomElementRegistry::isCustomTagName(element->localName()))
        return createDirectWrapper(element, creationContext, isolate);
    if (createSpecificWrapper)
        return createSpecificWrapper(element, creationContext, isolate);
    return createFallbackWrapper(element, creationContext, isolate);
}

template<typename ElementType>
v8::Handle<v8::Object> CustomElementWrapper<ElementType>::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());

    // FIXME: creationContext.IsEmpty() should never happen. Remove
    // this when callers (like InspectorController::inspect) are fixed
    // to never pass an empty creation context.
    v8::Handle<v8::Context> context = creationContext.IsEmpty() ? isolate->GetCurrentContext() : creationContext->CreationContext();

    CustomElementRegistry* registry = element->document()->registry();
    RefPtr<CustomElementDefinition> definition = registry->findFor(element.get());
    if (!element->isUpgradedCustomElement() || !definition)
        return createUpgradeCandidateWrapper(element.get(), creationContext, isolate, createSpecificWrapper);

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

    CustomElementBinding* customElementBinding = perContextData->customElementBinding(definition->type());

    v8::Handle<v8::Object> wrapper = V8DOMWrapper::createWrapper(creationContext, customElementBinding->wrapperType(), element.get(), isolate);
    if (wrapper.IsEmpty())
        return v8::Handle<v8::Object>();

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

    V8DOMWrapper::associateObjectWithWrapper<V8Element>(element, customElementBinding->wrapperType(), wrapper, isolate, WrapperConfiguration::Dependent);
    return wrapper;
}

template
class CustomElementWrapper<HTMLElement>;

template
class CustomElementWrapper<SVGElement>;

} // namespace WebCore