#ifndef V8EventListenerList_h
#define V8EventListenerList_h
#include "bindings/v8/V8Binding.h"
#include "bindings/v8/V8EventListener.h"
namespace WebCore {
class LocalFrame;
enum ListenerLookupType {
ListenerFindOnly,
ListenerFindOrCreate,
};
class V8EventListenerList {
public:
static PassRefPtr<V8EventListener> findWrapper(v8::Local<v8::Value> value, v8::Isolate* isolate)
{
ASSERT(isolate->InContext());
if (!value->IsObject())
return nullptr;
v8::Handle<v8::String> wrapperProperty = getHiddenProperty(false, isolate);
return doFindWrapper(v8::Local<v8::Object>::Cast(value), wrapperProperty, isolate);
}
template<typename WrapperType>
static PassRefPtr<V8EventListener> findOrCreateWrapper(v8::Local<v8::Value>, bool isAttribute, v8::Isolate*);
static void clearWrapper(v8::Handle<v8::Object> listenerObject, bool isAttribute, v8::Isolate* isolate)
{
v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isAttribute, isolate);
listenerObject->DeleteHiddenValue(wrapperProperty);
}
static PassRefPtr<EventListener> getEventListener(v8::Local<v8::Value>, bool isAttribute, ListenerLookupType);
private:
static V8EventListener* doFindWrapper(v8::Local<v8::Object> object, v8::Handle<v8::String> wrapperProperty, v8::Isolate* isolate)
{
ASSERT(isolate->InContext());
v8::HandleScope scope(isolate);
v8::Local<v8::Value> listener = object->GetHiddenValue(wrapperProperty);
if (listener.IsEmpty())
return 0;
return static_cast<V8EventListener*>(v8::External::Cast(*listener)->Value());
}
static inline v8::Handle<v8::String> getHiddenProperty(bool isAttribute, v8::Isolate* isolate)
{
return isAttribute ? v8AtomicString(isolate, "attributeListener") : v8AtomicString(isolate, "listener");
}
};
template<typename WrapperType>
PassRefPtr<V8EventListener> V8EventListenerList::findOrCreateWrapper(v8::Local<v8::Value> value, bool isAttribute, v8::Isolate* isolate)
{
ASSERT(isolate->InContext());
if (!value->IsObject()
|| (isAttribute && !value->IsFunction()))
return nullptr;
v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);
v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isAttribute, isolate);
V8EventListener* wrapper = doFindWrapper(object, wrapperProperty, isolate);
if (wrapper)
return wrapper;
RefPtr<V8EventListener> wrapperPtr = WrapperType::create(object, isAttribute, isolate);
if (wrapperPtr)
object->SetHiddenValue(wrapperProperty, v8::External::New(isolate, wrapperPtr.get()));
return wrapperPtr;
}
}
#endif