/*

* Copyright (c) 2007 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:  Publish&Subscribe event listener 

*

*/

#ifndef C_WRTHARVESTERNOTIFIER_H

#define C_WRTHARVESTERNOTIFIER_H

#include <e32base.h>

#include <e32property.h>

class CWrtHarvester;

// Content Harvester server secure id

const TUid KPropertyCat = { 0x10282E5A };

// Can not conflict with other Content Harvester plugin keys

enum TPropertyKeys { EWidgetUIState = 109, EWidgetRegAltered, EWidgetMMCAltered };

/**

 * Publish&Subscribe event listener

 *

 * @since S60 v5.0

 */

class CWrtHarvesterPSNotifier : public CActive

    {    

    public:

        /**

         * Creates an instance of CWrtHarvesterPSNotifier implementation.

         *

         * @since S60 v5.0

         * @param aCallBack Reference to notifier interface.

         */

        static CWrtHarvesterPSNotifier* NewL( CWrtHarvester* aHarvester, TPropertyKeys aKey );

        /**

         * Destructor.

         */

        ~CWrtHarvesterPSNotifier();

        /**

         * Gets key value

         *

         * @since S60 v5.0

         */

        TInt GetValue( TInt& aValue );

        /**

         * Sets key value

         *

         * @since S60 v5.0

         */

        TInt SetValue( TInt aValue );

    private:

        /**

        * 

        * @param aHarvester

        * @param aKey

        */

        CWrtHarvesterPSNotifier( CWrtHarvester* aHarvester, TPropertyKeys aKey );

        /**

        * 

        */

        void ConstructL();

        /**

        * from CActive

        */

        void RunL();

        /**

        * from CActive

        */

        void DoCancel();

        /**

        * from CActive

        */

        TInt RunError(TInt aError);

    private:

        /**

         * User side interface to Publish & Subscribe.

         */

        RProperty iProperty;

        /**

         * Publish & Subscribe key.

         */

        TPropertyKeys iKey;

        /**

         * not own

         */

        CWrtHarvester* iHarvester;

    };

#endif // C_WRTHARVESTERNOTIFIER_H

// End of File