/*
 * Copyright (C) 2010 Apple 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:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef DeviceMotionEvent_h
#define DeviceMotionEvent_h

#include "core/events/Event.h"

namespace WebCore {

class DeviceAcceleration;
class DeviceMotionData;
class DeviceRotationRate;

class DeviceMotionEvent : public Event {
public:
    ~DeviceMotionEvent();
    static PassRefPtr<DeviceMotionEvent> create()
    {
        return adoptRef(new DeviceMotionEvent);
    }
    static PassRefPtr<DeviceMotionEvent> create(const AtomicString& eventType, DeviceMotionData* deviceMotionData)
    {
        return adoptRef(new DeviceMotionEvent(eventType, deviceMotionData));
    }

    void initDeviceMotionEvent(const AtomicString& type, bool bubbles, bool cancelable, DeviceMotionData*);

    DeviceMotionData* deviceMotionData() const { return m_deviceMotionData.get(); }

    DeviceAcceleration* acceleration();
    DeviceAcceleration* accelerationIncludingGravity();
    DeviceRotationRate* rotationRate();
    double interval(bool& isNull) const;

    virtual const AtomicString& interfaceName() const;

private:
    DeviceMotionEvent();
    DeviceMotionEvent(const AtomicString& eventType, DeviceMotionData*);

    RefPtr<DeviceMotionData> m_deviceMotionData;

    RefPtr<DeviceAcceleration> m_acceleration;
    RefPtr<DeviceAcceleration> m_accelerationIncludingGravity;
    RefPtr<DeviceRotationRate> m_rotationRate;
};

inline DeviceMotionEvent* toDeviceMotionEvent(Event* event)
{
    ASSERT_WITH_SECURITY_IMPLICATION(!event || event->interfaceName() == EventNames::DeviceMotionEvent);
    return static_cast<DeviceMotionEvent*>(event);
}

} // namespace WebCore

#endif // DeviceMotionEvent_h