#ifndef JSEventListener_h
#define JSEventListener_h
#include "EventListener.h"
#include "JSDOMWindow.h"
#include <heap/Weak.h>
namespace WebCore {
class JSDOMGlobalObject;
class JSEventListener : public EventListener {
public:
static PassRefPtr<JSEventListener> create(JSC::JSObject* listener, JSC::JSObject* wrapper, bool isAttribute, DOMWrapperWorld* isolatedWorld)
{
return adoptRef(new JSEventListener(listener, wrapper, isAttribute, isolatedWorld));
}
static const JSEventListener* cast(const EventListener* listener)
{
return listener->type() == JSEventListenerType
? static_cast<const JSEventListener*>(listener)
: 0;
}
virtual ~JSEventListener();
virtual bool operator==(const EventListener& other);
bool isAttribute() const { return m_isAttribute; }
JSC::JSObject* jsFunction(ScriptExecutionContext*) const;
DOMWrapperWorld* isolatedWorld() const { return m_isolatedWorld.get(); }
JSC::JSObject* wrapper() const { return m_wrapper.get(); }
void setWrapper(JSC::JSGlobalData& globalData, JSC::JSObject* wrapper) const { m_wrapper.set(globalData, wrapper, 0); }
private:
virtual JSC::JSObject* initializeJSFunction(ScriptExecutionContext*) const;
virtual void visitJSFunction(JSC::SlotVisitor&);
virtual bool virtualisAttribute() const;
protected:
JSEventListener(JSC::JSObject* function, JSC::JSObject* wrapper, bool isAttribute, DOMWrapperWorld* isolatedWorld);
virtual void handleEvent(ScriptExecutionContext*, Event*);
private:
mutable JSC::WriteBarrier<JSC::JSObject> m_jsFunction;
mutable JSC::Weak<JSC::JSObject> m_wrapper;
bool m_isAttribute;
RefPtr<DOMWrapperWorld> m_isolatedWorld;
};
inline JSC::JSObject* JSEventListener::jsFunction(ScriptExecutionContext* scriptExecutionContext) const
{
if (!m_jsFunction)
m_jsFunction.setMayBeNull(*scriptExecutionContext->globalData(), m_wrapper.get(), initializeJSFunction(scriptExecutionContext));
ASSERT(m_wrapper || !m_jsFunction);
if (!m_wrapper)
return 0;
ASSERT(!m_jsFunction || static_cast<JSC::JSCell*>(m_jsFunction.get())->isObject());
return m_jsFunction.get();
}
inline PassRefPtr<JSEventListener> createJSAttributeEventListener(JSC::ExecState* exec, JSC::JSValue listener, JSC::JSObject* wrapper)
{
if (!listener.isObject())
return 0;
return JSEventListener::create(asObject(listener), wrapper, true, currentWorld(exec));
}
}
#endif // JSEventListener_h