/*

 * Copyright (C) 2010 Google Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 * notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 * copyright notice, this list of conditions and the following disclaimer

 * in the documentation and/or other materials provided with the

 * distribution.

 *     * Neither the name of Google Inc. nor the names of its

 * contributors may be used to endorse or promote products derived from

 * this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

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 */

#ifndef AbstractWorker_h

#define AbstractWorker_h

#if ENABLE(WORKERS)

#include "ActiveDOMObject.h"

#include "AtomicStringHash.h"

#include "EventListener.h"

#include "EventNames.h"

#include "EventTarget.h"

#include <wtf/PassRefPtr.h>

#include <wtf/RefCounted.h>

#include <wtf/RefPtr.h>

namespace WebCore {

    class KURL;

    class ScriptExecutionContext;

    class AbstractWorker : public RefCounted<AbstractWorker>, public ActiveDOMObject, public EventTarget {

    public:

        // EventTarget APIs

        virtual ScriptExecutionContext* scriptExecutionContext() const { return ActiveDOMObject::scriptExecutionContext(); }

        DEFINE_ATTRIBUTE_EVENT_LISTENER(error);

        using RefCounted<AbstractWorker>::ref;

        using RefCounted<AbstractWorker>::deref;

        virtual void contextDestroyed();

        AbstractWorker(ScriptExecutionContext*);

        virtual ~AbstractWorker();

    protected:

        // Helper function that converts a URL to an absolute URL and checks the result for validity.

        KURL resolveURL(const String& url, ExceptionCode& ec);

        intptr_t asID() const { return reinterpret_cast<intptr_t>(this); }

    private:

        virtual void refEventTarget() { ref(); }

        virtual void derefEventTarget() { deref(); }

        virtual EventTargetData* eventTargetData();

        virtual EventTargetData* ensureEventTargetData();

        void onDestroyWorker();

        EventTargetData m_eventTargetData;

    };

} // namespace WebCore

#endif // ENABLE(WORKERS)

#endif // AbstractWorker_h