// Copyright (c) 1999-2009 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 __ASSRVALARMQUEUEOBSERVER_H__

#define __ASSRVALARMQUEUEOBSERVER_H__

// System includes

#include <e32base.h>

// User includes

#include <asshddefs.h>

// Type definitions

// Constants

// Enumerations

// Classes referenced

//

// ----> MASSrvAlarmQueueObserver (header)

//

/**

 * A mixin class to be implemented by any object wishing to be informed

 * when the status of the alarm queue changes

 */

class MASSrvAlarmQueueObserver

	{

//

public:										// FROM MASSrvAlarmQueueObserver

//

	/**

	 * The type of event that took place

	 */

	enum TASSrvAlarmQueueEvent

		{

		/**

		 * The head item in the alarm queue changed

		 */

		EASSrvAlarmQueueEventHeadItemChanged = 0,

		/**

		 * An alarm was added to the queue

		 */

		EASSrvAlarmQueueEventAlarmAdded,

		/**

		 * The properties of an alarm changed

		 */

		EASSrvAlarmQueueEventAlarmChanged,

		/**

		 * An alarm was removed from the queue

		 */

		EASSrvAlarmQueueEventAlarmDeleted,

		/**

		 * Alarm server is starting to Internalize

		 * (e.g. on startup, after backup restore) 

		 */

		EASSrvAlarmQueueEventAlarmStartInternalize

		};

//

public:										// FROM MASSrvAlarmQueueObserver

//

	/**

	 * Abstract event handler method

	 */

	virtual void							MAlarmQueueObserverHandleEvent(TASSrvAlarmQueueEvent aEvent, TAlarmId aAlarmId) = 0;

	};

#endif