/*

* 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 Last Known Position request.

*

*/

#ifndef CPOSLASTKNOWNPOSHANDLER_H_

#define CPOSLASTKNOWNPOSHANDLER_H_

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

// INCLUDES

#include <e32base.h>

#include <e32std.h>

#include <e32def.h>

#include <e32cmn.h>

#include "LbsErrors.h" 

#include "EPos_CPosLocMonitorReqHandlerBase.h"

#include "EPos_Global.h" 		// For DEBUG_TRACE

#include "EPos_ServerPanic.h" 	// For EPosServerPanicPositionerNotInitialized

#include "rlbslocmonitorsession.h"

#include "rlbslocmonitorareapositioner.h"

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

// FORWARD DECLARATIONS

class CPosCallbackTimer;	// Used for timeout

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

// CONSTANT DEFINITIONS

// The timeout value for get last known position request is 10seconds

const TTimeIntervalMicroSeconds KLastKnownPosTimeOut(10000000);

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

// CLASS DECLARATION

/**

  The active object that handles requests for last known position from clients. 

  Owns subsession with the location monitor and uses the sub-session handle to 

  forward the above requests to the location monitor. Inherits the basic functionalities 

  from CPosLocMonitorReqHandlerBase.

 */

class CPosLastKnownPosHandler : public CPosLocMonitorReqHandlerBase

	{

public: 

	// Two-phased Constructors 

	static CPosLastKnownPosHandler* NewL(); 

    // Destructors

	~CPosLastKnownPosHandler();  

	// Function to request last known position info from the Location Monitor

    void GetLastKnownPosL(RLbsLocMonitorSession& aLocMonSession, const RMessage2& aMessage);

    void CancelGetLastKnownPosL(const RMessage2& aMessage);

    void NotifyOnEmptyLastKnownPosStoreReq();

private:

	// C++ Default constructor

	CPosLastKnownPosHandler(); 

	void ConstructL(); 	

	static TInt HandleTimeOut(TAny* aRequestHandler);

protected:  

	// From CActive

    void RunL();

    TInt RunError(TInt aError);

    void DoCancel();

private:

	RMessage2 		iMessage;

	// Subsession with the location monitor

	RLbsLocMonitorAreaPositioner 	iLocMonPositioner; 

	TPositionInfo   				iPositionInfo;

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

	};

#endif /*CPOSLASTKNOWNPOSHANDLER_H_*/