/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#ifndef IRMEDIAKEYOBSERVER_H_

#define IRMEDIAKEYOBSERVER_H_

#include <QObject>

#include <remconcoreapitargetobserver.h>

class CRemConInterfaceSelector;

class HbVolumeSliderPopup;

class QTimer;

class IRApplication;

class IRPlayController;

/**

 * This class observes the media key events and controls the volume.

 */

class IRMediaKeyObserver : public QObject, public MRemConCoreApiTargetObserver

{

    Q_OBJECT

public:

    explicit IRMediaKeyObserver(IRApplication* aApplication);

    ~IRMediaKeyObserver();

signals:

    void playPausePressed();

    void stopPressed();

public slots:

    void showVolumeSlider();

private slots:

    void volumeCallback();

    int changingVolume();

    void volumeChanged(int aVolume);

private:

    //from base class MRemConCoreApiTargetObserver

    //respond to the media button

    void MrccatoCommand(TRemConCoreApiOperationId aOperationId,

            TRemConCoreApiButtonAction aButtonAct);

    //from base class MRemConCoreApiTargetObserver

    //respond for play command

    void MrccatoPlay(TRemConCoreApiPlaybackSpeed aSpeed,

            TRemConCoreApiButtonAction aButtonAct);

    void initializeL();

private:

    /*

     * iSelector

     * Instance of CRemConInterfaceSelector For

     * Handling Media Keys

     */

    CRemConInterfaceSelector* iInterfaceSelector;

    /*

     * Respond continuous volume change

     */

    QTimer* iVolumeControlTimer;

    HbVolumeSliderPopup *iVolumeSlider;

    bool iIncreseVolume;

    IRPlayController *iPlayController;

};

#endif /* IRMEDIAKEYOBSERVER_H_ */