/*
 * 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
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef AbstractWorker_h
#define AbstractWorker_h

#include "bindings/v8/ScriptWrappable.h"
#include "core/dom/ActiveDOMObject.h"
#include "core/dom/EventListener.h"
#include "core/dom/EventNames.h"
#include "core/dom/EventTarget.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
#include "wtf/text/AtomicStringHash.h"

namespace WebCore {

class ExceptionState;
class KURL;
class ScriptExecutionContext;

class AbstractWorker : public RefCounted<AbstractWorker>, public EventTarget, public ActiveDOMObject {
public:
    // EventTarget APIs
    virtual ScriptExecutionContext* scriptExecutionContext() const OVERRIDE { return ActiveDOMObject::scriptExecutionContext(); }

    DEFINE_ATTRIBUTE_EVENT_LISTENER(error);

    using RefCounted<AbstractWorker>::ref;
    using RefCounted<AbstractWorker>::deref;

    virtual void contextDestroyed() OVERRIDE;
    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, ExceptionState&);
    intptr_t asID() const { return reinterpret_cast<intptr_t>(this); }

private:
    virtual void refEventTarget() OVERRIDE { ref(); }
    virtual void derefEventTarget() OVERRIDE { deref(); }
    virtual EventTargetData* eventTargetData() OVERRIDE;
    virtual EventTargetData* ensureEventTargetData() OVERRIDE;

    EventTargetData m_eventTargetData;
};

} // namespace WebCore

#endif // AbstractWorker_h
