/*

* Copyright (c) 2005-2009 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 CPOSPSYEXTENSION_H

#define CPOSPSYEXTENSION_H

#include <lbs/epos_mpositionerstatus.h>

// FORWARD DECLARATIONS

class MPosStatusObserver;

// CLASS DECLARATION

/**

* Class used to extend the CPositioner member data list. It holds PSY specific

* information and services. Only one instance per module should exist.

*/

class CPosPsyExtension : public CBase, public MPositionerStatus

    {

    public:  // Constructors and destructor

        /**

        * C++ constructor.

        *

        * @param aImplementationUid The UID of the PSY implementation.

        * @param aStatusObserver The server object watching for status updates.

        */

        CPosPsyExtension(

        /* IN  */       TUid aImplementationUid,

        /* IN  */       MPosStatusObserver* aStatusObserver

        );

        /**

        * Destructor.

        */

        ~CPosPsyExtension();

    public:  // Functions from base classes

        /**

        * From MPositionerStatus. 

        * Reports that the positioner status has changed.

        *

        * @param aStatus The new status.

        */

        void ReportStatus(

        /* IN  */       const TPositionModuleStatus& aStatus

        );

    public:  // New functions

        /**

        * Registers a positioner as user of this PSY.

        */

        void RegisterPositioner();

        /**

        * De-registers a positioner as user of this PSY.

        *

        * @return remaining number of registred positioners.

        */

        TInt UnregisterPositioner();

    private:  // Constructors

        // By default, prohibit copy constructor

        CPosPsyExtension( const CPosPsyExtension& );

        // Prohibit assigment operator

        CPosPsyExtension& operator= ( const CPosPsyExtension& );

    public:  // Data

        TUid                    iImplementationUid;

        MPosStatusObserver*     iStatusObserver;

    private:  // Data

        TUint                   iRefCount;

    };  

#endif  // CPOSPSYEXTENSION_H

// End of File