/*

* 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:  This file contains the header of the phone engine base 

*                central repository monitor classes 

*

*/

#ifndef CPECENREPMONITOR_H

#define CPECENREPMONITOR_H

// INCLUDE FILES

#include <e32base.h>

// Forward declarations

class CRepository;

// BASE CLASS

// CLASS DECLARATION

/**

*   CPECenRepMonitor

*   Active object base class for central repository monitor code - not instantiable

*   Exported methods are used by variant phone engine or other PE components

*   This class should not be used by components external to the TelephonyEngine

*

*  @lib PhoneEngineBase.lib

*  @since Series60_4.0

*/

NONSHARABLE_CLASS( CPECenRepMonitor )

    : public CActive

    {

    protected:

        ~CPECenRepMonitor();

        CPECenRepMonitor( TUint32 aMonitorSetting );

        /**

        * Creates a new repository object and submits a notification request

        */

        void BaseConstructL( TUid aRepositoryUid );

    protected:

        /**

        * Submits a notification request

        */

        void SubmitNotifyRequestL();

        /**

        * Defines the actions that take place when a change indication

        * is received. Each deriving monitor has to define the implementation for

        * this method. Most common approach would be to save the data to internal

        * data store and send a message via phone model if neccessary.

        */

        virtual void UpdateL() = 0;

    public:

        /**

        * Gets the current value of the monitored setting

        * @param aValue the current value of the monitored setting

        * @return TInt Symbian OS error code from central repository

        */

        virtual TInt Get( TInt& aValue );

    protected: // From CActive

        virtual void DoCancel();

        virtual TInt RunError( TInt aError );

        virtual void RunL();

    protected: // Owned by this object

        // Handle to repository object

        CRepository* iRepository;

        // Repository key, i.e. the identification number of the monitored setting

        TUint32 iMonitorSetting;

};

#endif // CPECENREPMONITOR_H