/*

* 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:  observer class for contact 

*

*/

#ifndef MVIMPSTDETAILSPRESENCEHANDLER_H

#define MVIMPSTDETAILSPRESENCEHANDLER_H

#include "tvimpstenums.h"

/**

 * presence  observer interface.

 * @lib vimpstdetailsviewplugin.dll

 * @since 5.0

 */

class MVIMPSTDetailsPresenceObserver

    {

    public: // Interface

        /** 

	     * notification call back from presence handler about presence change

	     * @since s60 v5.0

	     */

        virtual void HandlePresenceChangedL() = 0 ;

    protected: // Disabled functions

        /**

         * virtual destructor.

         * @since 5.0

         */  

        virtual ~MVIMPSTDetailsPresenceObserver()

        {}

    };

/**

 * presence  handlere interface.

 * @lib vimpstdetailsviewplugin.dll

 * @since 5.0

 */

class MVIMPSTDetailsPresenceHandler

	{

	public: // Interface

		/**

		* fetch presence from cache

		* @since S60 v5.0

		*/

		virtual void SubscribePresenceL(const TDesC& aUserId ) = 0 ;

		/**

		* return the presence status

		* @since S60 v5.0

		*/

		virtual TVIMPSTEnums::TOnlineStatus GetPresenceStatus() = 0 ;

		/**

	     * @param aIndex , index of the control

	     * @return  Label for control

	     * @since S60 v5.0

	     */

		virtual const TDesC& GetHeaderLabelDataL( TInt aIndex ) = 0 ;

		 /**

	     * @return the presence status message

	     * @since S60 v5.0

	     */

	    virtual const TDesC& GetStatusMessageL() = 0;

        /**

        * function to get supported or not 

        * @since S60 v5.0

        * @return ETrue if supported

        */

	    virtual TBool IsSupported() const  = 0 ;

	public: // Disabled functions

		/**

		* virtual destructor.

		*/  

		virtual ~MVIMPSTDetailsPresenceHandler()

			{}

	};

#endif // MVIMPSTDETAILSPRESENCEHANDLER_H

// End of File