/*

* Copyright (c) 2002 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: 

*		Observer for phone events. Used to deactive/active the side-key

*

*

*/

#ifndef     __AUTOLOCKVALUEOBSERVERPS_H

#define     __AUTOLOCKVALUEOBSERVERPS_H

#include <e32svr.h>

#include <e32property.h>

class CAutolockAppUi;

class   CValueObserver: public CActive

    {

    public:

		/**

        * Creates instance of the CValueObserver class.

        *

		* @param aAppUi (pointer to autolock appui)

		* @return Returns the instance just created.

        */

        static CValueObserver* NewL(CAutolockAppUi* aAppUi);

		/**

        * Destructor.

        */

		~CValueObserver();    

	public:

		/**

        * Starts asynchronic listening KUidCurrentCall event

        *

		* @return KErrNone: if no errors

        * @return KErrInUse: if already listening

		*/

        TInt Start();

		/**

        * Stops asynchronic listening KUidAutolockStatus event

    	*/

		void Stop();

    private: // constructors

        /**

        * C++ default constructor.

		*

		* @param aAppUi (pointer to autolock appui)

        */

		CValueObserver(CAutolockAppUi* aAppUi);

        /**

        * Symbian OS constructor.

        */

		void ConstructL();

    private: // from CActive    

		/** @see CActive::RunL() */

		void RunL();

		/** @see CActive::DoCancel() */

        void DoCancel();

    private: // data

    	CAutolockAppUi*      iAppUi; //not owned!

        RProperty            iProperty;

    };

#endif 

// End of file