/*

* Copyright (c) 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:  	This class inherits the common functionalities for requests to the 

*				Location Monitor from EPos_CPosLocMonitorReqHandlerBase.h and also

*				implements the functions specific to empty last known position store req.

*

*/

#ifndef CPOSEMPTYLASTKNOWNPOSSTOREHANDLER_H_

#define CPOSEMPTYLASTKNOWNPOSSTOREHANDLER_H_

//--------------------------------------------------------------------------------------

// INCLUDES

#include <e32base.h>

#include <e32std.h>

#include <e32def.h>

#include <e32cmn.h>

#include "LbsErrors.h" 

#include "EPos_Global.h" 		// For DEBUG_TRACE

#include "EPos_ServerPanic.h" 	// For EPosServerPanicPositionerNotInitialized

#include "EPos_CPosLocMonitorReqHandlerBase.h"

#include "rlbslocmonitorsession.h"

//--------------------------------------------------------------------------------------

// FORWARD DECLARATIONS

class CPosCallbackTimer;		// Used for timeout

//--------------------------------------------------------------------------------------

// CONSTANT DEFINITIONS

// The timeout value for the EmptyLastKnownPositionStore request is 10seconds

const TTimeIntervalMicroSeconds KEmptyLastKnownPosStoreTimeOut(10000000);

//--------------------------------------------------------------------------------------

// CLASS DECLARATION

/** 

 * The active object that handles requests from the clients to empty

 * the last known position store. Owns a session with the location monitor

 * and uses the session handle to forward the above requests. Inherits the basic

 * functionalities from CPosLocMonitorReqHandlerBase.

 */

class CPosEmptyLastKnownPosStoreHandler : public CPosLocMonitorReqHandlerBase

	{

public: 

	// Two-phased Constructors 

	static CPosEmptyLastKnownPosStoreHandler* NewL(); 

    // Destructors

	~CPosEmptyLastKnownPosStoreHandler();  

    void EmptyLastKnownPosStoreL(const RLbsLocMonitorSession& aLocMonitorSession, const RMessage2& aMessage);

    void CancelEmptyLastKnownPosStoreL(const RMessage2& aMessage);

private:

	// C++ Default constructor

	CPosEmptyLastKnownPosStoreHandler(); 

	void ConstructL(); 	

	static TInt HandleTimeOut(TAny* aRequestHandler);

protected:  

	// From CActive

    void RunL();

    TInt RunError(TInt aError);

    void DoCancel();

private:

	// Session with the location monitor

	RLbsLocMonitorSession 	iLocMonitorSession; 

	CPosCallbackTimer* 		iTimeoutTimer; 		// The timeout value is hardcoded in the constant KEmptyLastKnownPosStoreTimeOut

	};

#endif /*CPOSEMPTYLASTKNOWNPOSSTOREHANDLER_H_*/