/*

* Copyright (c) 2005 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: 

*     CHeadsetStatusContainer functionality.

*

*/

#ifndef __HEADSETCONTAINER_H__

#define __HEADSETCONTAINER_H__

// INCLUDES

#include <e32base.h>

#ifdef __ACCESSORY_FW

#include <AccessoryServer.h>

#include <AccessoryMode.h>

#endif

// FORWARD DECLARATIONS

class MHeadsetStatusObserver;

class CHeadsetStatusObserver;

// CLASS DECLARATION

/** 

*  This implementation is a wrapper that encapsulates internal interfaces 

*  from extended SDK.

*  Construction will leave with KErrNotSupported unless __ACCESSORY_FW flag

*  is not defined.

*/ 

NONSHARABLE_CLASS( CHeadsetStatusContainer ): public CBase 

    {

    public:     // Constructors & destructors

        /**

        * Destructor 

        */

        ~CHeadsetStatusContainer();

        /**

        * Symbian two phased constructor.

        */

        static CHeadsetStatusContainer* NewL();

    public:     // New methods

        /**

        * Used to query the headset connectivity status. 

        * @param    aState: Boolean value of headset status

        * @return   KErrNone if query succeeded, otherwise one of the

        *           system wide error codes.

        */

        TInt QueryHeadsetStatus( TBool& aState );

        /**

        * Sets observer through headset status notifications are received.

        * @param    aObserver: Observer

        * @return   None

        */

        void SetObserver( MHeadsetStatusObserver* aObserver );

        /**

        * Starts observing headset status changes.

        * @param    None

        * @return   None

        */

        void StartObserving();

        /**

        * Stops observing.

        * @param    None

        * @return   None

        */

        void StopObserving();

        /**

        * Checks whether already observing.

        * @param    None

        * @return   ETrue if observing

        */

        TBool IsObserving() const;

    private: 

        /**

        * Default Constructor 

        */

        CHeadsetStatusContainer( );

        /**

        * Symbian OS 2nd phase constructor 

        */

        void ConstructL();  

    private:

        #ifdef __ACCESSORY_FW

        RAccessoryServer    iAccSrv;

        RAccessoryMode      iAccMode;

        // headset status observer, owned

        CHeadsetStatusObserver* iObserver;

        #endif

    };

#endif //__HEADSETCONTAINER_H__

// End of File