/*

* Copyright (c) 2009 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: 

*

*/

#ifndef MLCSESSIONOBSERVER_H

#define MLCSESSIONOBSERVER_H

// INCLUDES

#include <e32std.h>

// FORWARD DECLARATIONS

class MLcSession;

class MLcVideoPlayer;

// CLASS DECLARATION

/**

* A callback for a Live Comms session related events. 

*/

class MLcSessionObserver

    {

    public:

        /**

        * The state of the session has changed.

        * The new state can be obtained from the session.

        * @param aSession the session

        */

        virtual void StateChanged( MLcSession& aSession ) = 0;

        /**

        * The state of the player has changed.

        * The new state can be obtained from the player.

        * @param aPlayer the player

        */

        virtual void StateChanged( MLcVideoPlayer& aPlayer ) = 0;

        /**

        * The session has been updated.

        * For example a new player has been added.

        * @param aSession the updated session

        */

        virtual void Updated( MLcSession& aSession ) = 0;

        /**

        * The session has been updated.

        * For example a new control has been added or 

        * an existing control has been updated.

        * @param aPlayer the updated player

        */

        virtual void Updated( MLcVideoPlayer& aPlayer ) = 0;

        /**

        * The session has failed.

        * @param aSession the failed session

        * @param aError the reason for the failure 

        */

    	virtual void Failed( 

            MLcSession& aSession,

            TInt aError ) = 0;

    	/**

    	* The player has failed.

    	* @param aPlayer the failed player

    	* @param aError the reason for the failure 

    	*/

        virtual void Failed( 

            MLcVideoPlayer& aPlayer, 

            TInt aError ) = 0;

        /**

        * The session duration time has changed.

        * @param aSession the session

        * @param aSeconds the current session duration.

        */

        virtual void SessionTimeChanged( 

            MLcSession& aSession,

            const TTimeIntervalSeconds& aSeconds ) = 0;

    };   

#endif // MLCSESSIONOBSERVER_H

// end of file