/*

* 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 "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:  Interface for controls that want to be informed about lock status

 *

*/

#ifndef __LOCKAPPSTATEOBSERVER_H__

#define __LOCKAPPSTATEOBSERVER_H__

// INCLUDES

#include <e32std.h>

#include <e32base.h>

#include "lockapp.hrh"

/**

 *  CLockAppStateObserver class offers a lockstate observer interface. 

 *  All observer classes derived from MLockAppStateObserver should be added to 

 *  the lockapp observer list in order to get notifications about lock state changes.

 *

 *  @lib    lockapp

 *  @since  5.0

 *  @author Joona Petrell

 *  @author Tamas Koteles

 */

class MLockAppStateObserver

	{

	public:

		/**

		 * Lock status changes are handled trough HandleLockStatusChangedL method.

		 * Must be overriden by derived class for observing.

		 */

		virtual void HandleLockStatusChangedL( TLockStatus aLockStatus ) = 0;

	};

#endif // __LOCKAPPSTATEOBSERVER_H__

// End of File