/*

* 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:  	Receives the Last Known Position, Last Known Position Area requests and Empty

* 				Position Store requests from Subsessions and Sessions in the Location Server and 

*				forwards them to the respective active objects*

*/

#include <e32base.h>

#include <e32def.h>

#include "EPos_CPosLocMonitorReqHandlerHub.h"

#include <lbs/epos_lastknownlocationpskeys.h>

// ============================ CONSTANTS ===========================================================

// CONSTANTS

#ifdef _DEBUG

_LIT(KTraceFileName, "EPos_CPosLocMonitorReqHandlerHub.cpp");

#endif

// ============================== MEMBER FUNCTIONS ===================================================

/**

 * NewL of the Two-phased constructor.

 *

 */

CPosLocMonitorReqHandlerHub* CPosLocMonitorReqHandlerHub::NewL()

	{

	CPosLocMonitorReqHandlerHub* self = new( ELeave ) CPosLocMonitorReqHandlerHub();

	CleanupStack::PushL( self );

	self->ConstructL();

	CleanupStack::Pop( self );

	return self;

	}

/**

 * C++ default constructor

 * 

 * @param aDumpInterval 

 */

CPosLocMonitorReqHandlerHub::CPosLocMonitorReqHandlerHub() 

    {

    }

/**

 * Symbian 2nd phase constructor

 */

void CPosLocMonitorReqHandlerHub::ConstructL()

	{

	// Establish a session with the Location Monitor - The subsessions are

	// established in the "active objects" owned by the CPosLocMonitorReqHandlerHub

	User::LeaveIfError(iLocMonSession.Connect()); 

	// Establish the subsession with the location monitor - As SetPositionInfoL()

	// is likely to be called whenever we have an update from the PSYs, the subsession

	// with the location monitor is created as a member variable instead of a local variable.

	iLocMonSubSession.OpenL(iLocMonSession);	

	}

/**

 * Destructor

 */

CPosLocMonitorReqHandlerHub::~CPosLocMonitorReqHandlerHub()

	{

    delete iLastKnownPosHandler;	

    delete iLastKnownPosAreaHandler;

    delete iEmptyLastKnownPosStoreHandler;

	// Close the session with the Location Monitor

	if ( iLocMonSubSession.SubSessionHandle() )

		{

		iLocMonSubSession.Close();

		}

	// Close the session with the Location Monitor

	if ( iLocMonSession.Handle() )

		{

		iLocMonSession.Close();

		}

	}

/** 

 * Set Position Information (SetPositionInfo)

 * 		>> Whenever there is a position update from any of the PSYs update the 

 * 		   location monitor of this latest position.

 *

 * @param aPositionInfo The last known position.

 */

void CPosLocMonitorReqHandlerHub::SetPositionInfo( const TPositionInfo& aPositionInfo )

	{

	DEBUG_TRACE("CPosLocMonitorReqHandlerHub::SetPositionInfoL", __LINE__)

	TInt errSetPos = iLocMonSubSession.SetLastKnownPosition(aPositionInfo);

	}

/** 

 * Get Last Known Position Request

 * 		>> Called by the subsession to request the last known position.

 *

 * @param aMessage The message containing info about the request from subsession

 */

void CPosLocMonitorReqHandlerHub::GetLastKnownPosReqL(const RMessage2& aMessage)

	{

	DEBUG_TRACE("CPosLocMonitorReqHandlerHub::GetLastKnownPosReqL", __LINE__)

	if (!iLastKnownPosHandler)

		{

		// The very first request with the location monitor

		iLastKnownPosHandler = CPosLastKnownPosHandler::NewL();

		}

	// The timeout value for this request is hardcoded in the constant 

	// KLastKnownPosTimeOut [in CPosLastKnownPosHandler]

	iLastKnownPosHandler->GetLastKnownPosL(iLocMonSession, aMessage);

	}

/** Cancel Get Last Known Position Request 

 * 		>> Called by the subsession to cancel a last knwon position request

 * @param aMessage The message containing info about the request from subsession

 */

void CPosLocMonitorReqHandlerHub::CancelGetLastKnownPosReqL(const RMessage2& aMessage)

	{

	DEBUG_TRACE("CPosLocMonitorReqHandlerHub::CancelGetLastKnownPosReqL", __LINE__)

	if (!iLastKnownPosHandler)

		{

		// The client never sent any get last known position request earlier

		if (!aMessage.IsNull())

			{

			aMessage.Complete(KErrNotFound);

			}

		}

	else

		{

		iLastKnownPosHandler->CancelGetLastKnownPosL(aMessage);

		}

	}

/** 

 * Get Last Known Position Area Request

 * 		>> Called by the subsession to request the last known position area.

 *

 * @param aMessage The message containing info about the request from subsession

 */

void CPosLocMonitorReqHandlerHub::GetLastKnownPosAreaReqL(const RMessage2& aMessage)

	{

	DEBUG_TRACE("CPosLocMonitorReqHandlerHub::GetLastKnownPosAreaReqL", __LINE__)

	if (!iLastKnownPosAreaHandler)

		{

		// The very first request with the location monitor

		iLastKnownPosAreaHandler = CPosLastKnownPosAreaHandler::NewL();

		}

	iLastKnownPosAreaHandler->GetLastKnownPosAreaL(iLocMonSession, aMessage);

	}

/** Cancel Get Last Known Position Area Request 

 * 		>> Called by the subsession to cancel a LKPosArea request

 * @param aMessage The message containing info about the request from subsession

 */

void CPosLocMonitorReqHandlerHub::CancelGetLastKnownPosAreaReqL(const RMessage2& aMessage)

	{

	DEBUG_TRACE("CPosLocMonitorReqHandlerHub::CancelGetLastKnownPosAreaReqL", __LINE__)

	if (!iLastKnownPosAreaHandler)

		{

		// The client never sent any get last known position area request earlier

		if (!aMessage.IsNull())

			{

			aMessage.Complete(KErrNotFound);

			}

		}

	else

		{

		iLastKnownPosAreaHandler->CancelGetLastKnownPosAreaL(aMessage);

		}

	}

/** 

 * Empty Last Known Position Store Request (EmptyPositionStoreReq)

 *		>> Called by the subsession to Empty the last known position store

 *

 *  @param aMessage The message containing info about the request from subsession

 */

void CPosLocMonitorReqHandlerHub::EmptyLastKnownPosStoreReqL(const RMessage2& aMessage)

	{

	DEBUG_TRACE("CPosLocMonitorReqHandlerHub::EmptyLastKnownPosStoreL", __LINE__)

	if (!iEmptyLastKnownPosStoreHandler)

		{

		// The very first request with the location monitor

		iEmptyLastKnownPosStoreHandler = CPosEmptyLastKnownPosStoreHandler::NewL();

		}

	iEmptyLastKnownPosStoreHandler->EmptyLastKnownPosStoreL(iLocMonSession, aMessage);

	// Cancel outstanding last known position or last known position area requests

	if (iLastKnownPosAreaHandler)

		{

		iLastKnownPosAreaHandler->NotifyOnEmptyLastKnownPosStoreReq();

		}

	if (iLastKnownPosHandler)

		{

		iLastKnownPosHandler->NotifyOnEmptyLastKnownPosStoreReq();

		}

	}

/** Cancel Empty Last Known Position Store Request 

 * 		>> Called by the subsession to cancel an earlier EmptyLastKnownPosStoreReq

 * @param aMessage The message containing info about the request from subsession

 */

void CPosLocMonitorReqHandlerHub::CancelEmptyLastKnownPosStoreReqL(const RMessage2& aMessage)

	{

	DEBUG_TRACE("CPosLocMonitorReqHandlerHub::CancelGetLastKnownPosAreaReqL", __LINE__)

	iEmptyLastKnownPosStoreHandler->CancelEmptyLastKnownPosStoreL(aMessage);

	}

/** 

 * NotifyServerShutDown

 * 		>> Notification from the Session that the server is going to shutdown

 * 

 */

void CPosLocMonitorReqHandlerHub::NotifyServerShutDown()

	{

	DEBUG_TRACE("CPosLocMonitorReqHandlerHub::NotifyServerShutDown", __LINE__)

	if (iLastKnownPosAreaHandler)

		{

		iLastKnownPosAreaHandler->NotifyServerShutDown();

		}

	if (iLastKnownPosHandler)

		{

		iLastKnownPosHandler->NotifyServerShutDown();

		}

	if (iEmptyLastKnownPosStoreHandler)

		{

		iEmptyLastKnownPosStoreHandler->NotifyServerShutDown();

		}

	}

/** 

 * NotifySubSessionClosed

 * 		>> Notification from the Session that the subsessions are to be closed

 * 

 */

void CPosLocMonitorReqHandlerHub::NotifySubSessionClosed(const RMessage2& aMessage)

	{

	if (iLastKnownPosHandler)

		{

		iLastKnownPosHandler->NotifySubSessionClosed(aMessage);

		}

	if (iLastKnownPosAreaHandler)

		{

		iLastKnownPosAreaHandler->NotifySubSessionClosed(aMessage);

		}

	// No need to notify the emptylastknownpositionstore request as it is issued on a 

	// session and not a subsession

	}

/** 

 * NotifySessionClosed

 * 		>> Notification from the Session that it is going to be closed 

 *		NOTE : Not guaranteed that the requests would be completed with EPositoinRequestsNotCancelled

 * 			   - This method is used to ensure that the request queue is cleaned up

 * @param aSessionPtr The Session pointer

 */

void CPosLocMonitorReqHandlerHub::NotifySessionClosed(const CSession2* aSessionPtr)

	{

	DEBUG_TRACE("CPosLocMonitorReqHandlerHub::NotifySessionClosed", __LINE__)

	if (iLastKnownPosAreaHandler)

		{

		iLastKnownPosAreaHandler->NotifySessionClosed(aSessionPtr);

		}

	if (iLastKnownPosHandler)

		{

		iLastKnownPosHandler->NotifySessionClosed(aSessionPtr);

		}

	if (iEmptyLastKnownPosStoreHandler)

		{

		iEmptyLastKnownPosStoreHandler->NotifySessionClosed(aSessionPtr);

		}

	}