/*

* Copyright (c) 2008 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:  An observer for change in System of Measurement

*

*/

#ifndef C_EVTMGMTUISYSOFMEASUREMENT_H_

#define C_EVTMGMTUISYSOFMEASUREMENT_H_

//  System Includes

#include <e32base.h>

// User Includes

#include "locnotprefplugindomaincrkeys.h"

// Forward Declarations

class CRepository;

// Constant Declarations

// Class Definition

class MEvtMgmtUiSOMObserver

    {

public:

    /**

     * It will be used to notify observer that lbt operation

     * has be completed

     * @param aTriggerId trigger id of newly created trigger

     * @param aState It will contain the the operation type              

     */

    virtual void NotifySOMChangeL( )=0;

    };

/**

 * Adapter to the System of Measurement settings storage

 */

class CEvtMgmtUiSysOfMeasurement : public CActive

    {

    public:

        /**

         * Creates new System of Measurement adapter

         *

         * @param  aAdapterObsrv                        Observer to the Settings adapter

         * @return CEvtMgmtUiSysOfMeasurement&  Reference to the application view

         */                                                 

        static CEvtMgmtUiSysOfMeasurement* NewL( 

                            MEvtMgmtUiSOMObserver& aAdapterObsrv );

        /**

         * Creates new System of Measurement adapter

         * Leaves the object on the Clean up stack         

         *

         * @param  aAdapterObsrv                        Observer to the Settings adapter

         * @return CEvtMgmtUiSysOfMeasurement&  Reference to the application view

         */                                                 

        static CEvtMgmtUiSysOfMeasurement* NewLC( 

                            MEvtMgmtUiSOMObserver& aAdapterObsrv );    

        /**

         * Destructor

         */

        ~CEvtMgmtUiSysOfMeasurement ();

        /**

         * Returns the current value of the System of measurements settings

         *

         * @return TLocSystemofMeasurementValues  Current value of the System of measurements settings

         */

        TLocSystemofMeasurementValues GetCurrentSysofMeasL();

    protected:

        /**

         * Inherited from CActive

         */

        void RunL();

        /**

         * Inherited from CActive

         */

        void DoCancel();

    private:

        /**

         * Constructor

         */

        CEvtMgmtUiSysOfMeasurement( MEvtMgmtUiSOMObserver& aAdapterObsrv );

        /**

         * Second Phase Constructor

         */

        void ConstructL();

        /**

         * Start notification from the Central repository server for any changes in the

         * System of measurements key value

         */

        void StartNotification();

    private:

        /**

         * Reference to the Adapter observer

         */

        MEvtMgmtUiSOMObserver&     iObserver;

        /**

         * Reference to the Central repository object

         *

         * Owns

         */

        CRepository*                    iRepository;        

    };          

#endif // C_EVTMGMTUISYSOFMEASUREMENT_H_