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#ifndef V8LazyEventListener_h
#define V8LazyEventListener_h

#include "bindings/v8/V8AbstractEventListener.h"
#include <v8.h>
#include "wtf/PassRefPtr.h"
#include "wtf/text/TextPosition.h"
#include "wtf/text/WTFString.h"

namespace WebCore {

    class Event;
    class Frame;
    class HTMLFormElement;
    class Node;

    // V8LazyEventListener is a wrapper for a JavaScript code string that is compiled and evaluated when an event is fired.
    // A V8LazyEventListener is either a HTML or SVG event handler.
    class V8LazyEventListener : public V8AbstractEventListener {
    public:
        static PassRefPtr<V8LazyEventListener> create(const AtomicString& functionName, const AtomicString& eventParameterName, const String& code, const String& sourceURL, const TextPosition& position, Node* node, v8::Isolate* isolate)
        {
            return adoptRef(new V8LazyEventListener(functionName, eventParameterName, code, sourceURL, position, node, isolate));
        }

        virtual bool isLazy() const { return true; }

    protected:
        virtual void prepareListenerObject(ExecutionContext*);

    private:
        V8LazyEventListener(const AtomicString& functionName, const AtomicString& eventParameterName, const String& code, const String sourceURL, const TextPosition&, Node*, v8::Isolate*);

        virtual v8::Local<v8::Value> callListenerFunction(ExecutionContext*, v8::Handle<v8::Value> jsEvent, Event*);

        // Needs to return true for all event handlers implemented in JavaScript so that
        // the SVG code does not add the event handler in both
        // SVGUseElement::buildShadowTree and again in
        // SVGUseElement::transferEventListenersToShadowTree
        virtual bool wasCreatedFromMarkup() const { return true; }

        AtomicString m_functionName;
        AtomicString m_eventParameterName;
        String m_code;
        String m_sourceURL;
        Node* m_node;
        TextPosition m_position;
    };

} // namespace WebCore

#endif // V8LazyEventListener_h