/*

* Copyright (c) 2008-2009 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:  Definition of CRestoreWatcher class. Observers restore changes.

*

*/

#ifndef RESTOREWATCHER_H

#define RESTOREWATCHER_H

// SYSTEM INCLUDE

#include <e32base.h>

#include <e32cmn.h>

#include <e32property.h>

// USER INCLUDE

#include "mpropertyobserver.h"

// FORWARD DECLERAATIONS

class CPropertyWatcher;

// CLASS DECLARATION

/**

 *  An instance of the CRestoreWatcher object.

 *  Controls harvesterAO and message monitor behaviour when

 *  user restoring data.

 *

 *  @code

 *   

 * 

 * @endcode

 *

 *  @lib -

 *  @since -

 */

NONSHARABLE_CLASS( CRestoreWatcher ) : public CBase, public MKeyObserver

	{	

public: 

	/**

     * Factory method NewL

     */

	static CRestoreWatcher* NewL();

	/**

	 * Destructor

	 */

	virtual ~CRestoreWatcher();

public:	

	/**

     * Method Register.

     */

	TBool Register();

	/**

     * Method UnregisterL.

     */

	void UnregisterL();

public:	 // From MKeyObserver.

	/**

	 * Method NotifyKeyL from MKeyObserver get notifications when

	 * property key has changed.

	 */

	void NotifyKeyL( 

			const TInt aKeyValue,

			const TUid aPropertyCategory,

			const TUint aKey ); 

private: // Construction 

	/**

	 * Constructor

	 */

	CRestoreWatcher();

	/**

	 * Symbian 2nd phase constructor.

	 */

	void ConstructL();

private:

	/**

	 * Method HandleBackupRestoreKeyActionL.

	 * If user make full restore sets restore flag on.

	 */

	void HandleBackupRestoreKeyActionL( const TUint aKeyValue );

	/**

	 * Method HandleClientsKeyActionL.

	 * Unregister and register message clients. 	

	 */

	void HandleClientsKeyActionL( const TUint aKeyValue );

	/**

	 * Method SetRestoreFlagL.

	 */

	void SetRestoreFlagL( TBool aRestoreDone );

	/**

	 * Method CheckRestoreL.

	 */

	void CheckRestoreL();

	/**

	 * Method CreateFileNameL.

	 * Creates file name in variable iFileName.

	 */

	void CreateFileNameL(); 

private:

	/*iRegisteredClients - registered clients for this observer.*/

	static TInt iRegisteredClients;

	/*iPartialRestoreDone - indicates if restore is executed.*/

	static TBool iRestoreDone;

	/*iPropertyWatcher - constains observed key's, owned by this class*/

	CPropertyWatcher* iPropertyWatcher;

	/*iClients - messageclients count.*/

	TInt iClients;

	/*iFileName - File used for restore flag.*/

	TFileName iFileName;

	};

#endif  // RESTOREWATCHER_H