1 /*

     2 * Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 * Name          : sipsystemstateobserver.h

    16 * Part of       : SIP

    17 * Version       : SIP/6.0 

    18 *

    19 */

    20 

    21 

    22 

    23 #ifndef MSIPSYSTEMSTATEOBSERVER_H

    24 #define MSIPSYSTEMSTATEOBSERVER_H

    25 

    26 // INCLUDES

    27 #include "sipsystemstatemonitor.h"

    28 #include <e32std.h>

    29 

    30 // CLASS DECLARATION

    31 /**

    32 * @publishedPartner

    33 * @released

    34 *

    35 * Callback to receive notifications about changes 

    36 * in the values of system variables.

    37 */

    38 class MSipSystemStateObserver

    39 	{

    40 	public:

    41 

    42 		/**

    43 		* The value of a system variable has changed.

    44 		* @param aVariable the identifier of a system variable that has changed

    45         * @param aObjectId identifies the monitored object		

    46 		* @param aValue the value of the variable

    47 		*/

    48 		virtual void SystemVariableUpdated( 

    49 		    CSipSystemStateMonitor::TSystemVariable aVariable,

    50 		    TInt aObjectId,

    51 		    TInt aValue ) = 0;

    52 	};

    53 

    54 #endif // MSIPSYSTEMSTATEOBSERVER_H