/*

* Copyright (c) 2006-2007 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:  ?Description

*

*/

#ifndef IRACTIVEIDLEENGPUBSUBNOTIFYHANDLER_H

#define IRACTIVEIDLEENGPUBSUBNOTIFYHANDLER_H

#include <e32cmn.h>

/**

* Observer interface for CIRActiveIdleEngPubSub.

* The observer is notified whenever the listened key is changed. If there was an error in getting the new value of the key,

* the observer will be notified of it as well.

*/

NONSHARABLE_CLASS(MIRActiveIdleEngPubSubNotifyHandler)

    {

    public:

        /**

        * Invoked when the listened key is changed.

        * @param    aCategory   The category of the key that changed.

        * @param    aKey        The key that changed.

        * @param    aValue      The new value of the key.

        */

    virtual void HandlePropertyChangeL( const TUid& aCategory, TUint aKey,

    	 TInt aValue ) = 0;

        /**

        * Invoked when the listened key is changed.

        * @param    aCategory   The category of the key that changed.

        * @param    aKey        The key that changed.

        * @param    aText       The new value of the key.

        */

    virtual void HandlePropertyChangeL( const TUid& aCategory, TUint aKey,

    	 const TDesC8& aText ) = 0;

        /**

        * Invoked when an error occurred while retrieving the new value of the key.

        * @param    aCategory   The category of the key that changed.

        * @param    aKey        The key that changed.

        * @param    aError      The error code.

        */

    virtual void HandlePropertyChangeErrorL( const TUid& aCategory,

     TUint aKey, TInt aError ) = 0;

    };

#endif//IR_ACTIVEIDLEENGPUBSUBNOTIFYHANDLER