/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  Class which implements handling Hardware Key events.

*                This class implements methods of MRemConCoreApiTargetObserver

*

*/

#ifndef BAVPHWKEYEVENTS_H

#define BAVPHWKEYEVENTS_H

// INCLUDES

#include <RemConCoreApiTargetObserver.h>

// FORWARD DECLARATIONS

class CRemConInterfaceSelector;

class CRemConCoreApiTarget;

class MRemConCoreApiTargetObserver;

// CONSTANTS

// CLASS DECLARATION

/**

*  MBavpHwKeyEventsObserver class for hardware key events

*  This class implements methods of MRemConCoreApiTargetObserver

*  @lib npBrowserVideoPlugin.lib

*  @since 3.2

*/

class MBavpHwKeyEventsObserver

    {

    public:

        /**

        * Called when volume level should be changed.

        * @since 3.2

    	* @param aVolumeChange: +1 change volume up

        *                       -1 change volume down

        * @return void

        */

        virtual void BavpHwKeyVolumeChange( TInt aVolumeChange ) = 0;

        /**

        * Called when a media hardware key (play, pause...) was presed.

        * @since 3.2

    	* @param aCommand: Command ID representing Play, Pause, ...

        * @return void

        */

        // Incr15 SCO item that was cancelled.

        // virtual void BavpHwKeyCommand( TBavpCommandIds aCommand ) = 0;

    };

/**

*  CBavpHwKeyEvents class to handle Side Volume Key events

*  @lib npBrowserVideoPlugin.lib

*  @since 3.2

*/

class CBavpHwKeyEvents : public CBase,

					     public MRemConCoreApiTargetObserver

    {

    public: // Constructors and destructor

        /**

        * Symbian constructor

        * @param aObserver observer to implement callback functions

        */

        static CBavpHwKeyEvents* NewL( MBavpHwKeyEventsObserver& aObserver );

        /**

        * Destructor.

        */

        ~CBavpHwKeyEvents();

    private: // Constructors and destructor

    	/**

    	* Default constructor.

        * @since 3.2

        */

        CBavpHwKeyEvents( MBavpHwKeyEventsObserver& aObserver );

        /**

        * Constructor.

        * @since 3.2

        */

         void ConstructL();

    protected: // From MRemConCoreApiTargetObserver

		/* Handles hardware key events

        * @since 3.2

    	*/

    	void MrccatoCommand( TRemConCoreApiOperationId aOperationId, 

    	 					 TRemConCoreApiButtonAction aButtonAct );

    private:

        /**

        * Change volume depending on the level of increase or decrease

        * @since 3.2

        */

        void DoChangeVolume( );

        /**

        * VolumeTimerCallback is the callback function called from change volume timer.

        * @since 3.2

        */

        static TInt VolumeTimerCallback( TAny* aThis );

    private:    // data

        MBavpHwKeyEventsObserver& iObserver;

        CRemConInterfaceSelector* iInterfaceSelector;

        CRemConCoreApiTarget* iCoreTarget;

        CPeriodic* iVolumeTimer;

        // Indicates size of volume level change

        TInt iChange;

        };

#endif // BAVPHWKEYEVENTS_H

// End of File