// Copyright (c) 2006-2009 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 file provides the implementation of the class for

// the X3P protocol state handler

// 

//

/**

 @file

 @internalTechnology

 @released

*/

#include "cx3pstatemachine.h"

#include "cx3pstatehandler.h"

/** Static constructor.

@param aMachine A reference to the parent state machine.

@return A new instance of the CX3pStateHandler class

*/  

CX3pStateHandler* CX3pStateHandler::NewL(CStateMachineBase& aMachine)

	{

	CX3pStateHandler* self = new (ELeave) CX3pStateHandler(aMachine);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

/** Standard constructor.

@param aMachine A reference to the parent state machine.

*/  

CX3pStateHandler::CX3pStateHandler(CStateMachineBase& aMachine)

: CStateHandlerBase(aMachine)

	{

	}

/** Standard destructor.

*/  

CX3pStateHandler::~CX3pStateHandler()

	{

	}

/** Private second-stage constructor.

*/  

void CX3pStateHandler::ConstructL()

	{

	}

/** Initialise state attributes

*/

void CX3pStateHandler::Initialise()

	{

	}

/** Perform entry actions.

This is called from the state machine to perform any actions

associated with entering the current state.

*/  

void CX3pStateHandler::EntryActions()

	{

	CNetworkInterface::TNetworkError netError = CNetworkInterface::ENone;

	// Retrieve current state and act accordingly

	CX3pStateMachine& x3pMachine = reinterpret_cast <CX3pStateMachine&> (iMachine);

	switch(x3pMachine.CurrentState())

		{

	case CX3pStateMachine::EStateNull:

		break;

	case CX3pStateMachine::EStateClientReqRecvd:

		// No action required

		break;

	case CX3pStateMachine::EStateNetSessStarted:

		// Forward X3P request to network

		netError = x3pMachine.Observer().Network()->MoLrReq(x3pMachine.Destination());

		// If this succeeded then start a timer for the anticipated response

		if (CNetworkInterface::ENone == netError)

			{

			x3pMachine.StartX3pReqTimer();

			}

		break;

	case CX3pStateMachine::EStateMeasureDataRecvd:

		// No action required

		break;

	case CX3pStateMachine::EStateNetBasedLocSent:

		// Send network location to gateway

		x3pMachine.Observer().Gateway()->NetworkLocationInd(

							x3pMachine.SessionId(),

							x3pMachine.ReferenceLoc());

		break;

	case CX3pStateMachine::EStateLocReqByNet:

		// Send location request to gateway

		x3pMachine.Observer().Gateway()->LocationReq(

							x3pMachine.SessionId(),

							EFalse, // this is NOT emergency related

							x3pMachine.LocReqType(),

							x3pMachine.LocReqQuality(),

							x3pMachine.PosMethod());

		// Start a timer for the anticipated response

		x3pMachine.StartLocRespTimer();

		break;

	case CX3pStateMachine::EStateLocRespRecvd:

		// No action required

		break;

	case CX3pStateMachine::EStateLocSentToNet:

		// Forward location response to network - but not if an error was reported

		if (KErrNone <= x3pMachine.LocRespReason())

			{

			netError = x3pMachine.Observer().Network()->LocationResp(x3pMachine.LocRespPosition());

			if (CNetworkInterface::ENone == netError)

				{

				x3pMachine.StartFacResultTimer();

				x3pMachine.ResponseSent();

				}						

			}

		break;

	case CX3pStateMachine::EStateNetSessToClose:

		// If we had received a location request, but an error or cancellation was

		// reported, forward this location error to the network (if response not sent yet)

		if (x3pMachine.IsLocReqReceived() && (KErrNone > x3pMachine.LocRespReason()) &&

			(!x3pMachine.IsLocRespSent()))

			{

			netError = x3pMachine.Observer().Network()->LocationResp(x3pMachine.LocRespReason());

			x3pMachine.ResponseSent();

			}

		break;

	case CX3pStateMachine::EStateNetResultSent:

		// Send network result location to gateway if no error or cancellation ocurred in LBS.

		if (x3pMachine.IsLocRespSent() && (KErrNone <= x3pMachine.LocRespReason()))

		{

		x3pMachine.Observer().Gateway()->NetworkLocationInd(

							x3pMachine.SessionId(),

							x3pMachine.NetResultLoc());

		}

	break;

	case CX3pStateMachine::EStateClientSessToClose:

		// No action required

	break;

	case CX3pStateMachine::EStateSessionsClosed:

		// No action required

		break;

	case CX3pStateMachine::EStateCancelling:

		// No action required

		break;

	default:

		User::Panic(KProtocolModulePanic, EProtocolModuleX3pState);

		break;

		}

	// Handle any network-related error

	if (CNetworkInterface::ENone != netError)

		{

		x3pMachine.Observer().NetworkErrorReported();

		}

	}

/** Perform exit actions.

This is called from the state machine to perform any actions

associated with exiting from the current state.

*/  

void CX3pStateHandler::ExitActions()

	{

	CNetworkInterface::TNetworkError netError = CNetworkInterface::ENone;

	// Retrieve current state and act accordingly

	CX3pStateMachine& x3pMachine = reinterpret_cast <CX3pStateMachine&> (iMachine);

	switch(x3pMachine.CurrentState())

		{

	case CX3pStateMachine::EStateNull:

		x3pMachine.SetStillCancelling(EFalse);

		break;

	case CX3pStateMachine::EStateClientReqRecvd:

		// no action required

		break;

	case CX3pStateMachine::EStateNetSessStarted:

		// no action required

		break;

	case CX3pStateMachine::EStateMeasureDataRecvd:

		// no action required

		break;

	case CX3pStateMachine::EStateNetBasedLocSent:

		// no action required

		break;

	case CX3pStateMachine::EStateLocReqByNet:

		// no action required

		break;

	case CX3pStateMachine::EStateLocRespRecvd:

		// no action required

		break;

	case CX3pStateMachine::EStateLocSentToNet:

		// no action required

		break;

	case CX3pStateMachine::EStateClientSessToClose:

		// Send a session completion to the gateway BUT not if we are

		// silently cancelling the client session

		if (!x3pMachine.IsSilentClientCancel())

			{

			x3pMachine.Observer().Gateway()->SessionCompleteInd(

								x3pMachine.SessionId(),x3pMachine.ClientCloseReason());

			}

		break;

	case CX3pStateMachine::EStateNetSessToClose:

		// Forward session completion to network if network is okay

		if (!x3pMachine.IsNetworkConnectionError())

			{

			netError = x3pMachine.Observer().Network()->MoLrCompleteInd(x3pMachine.NetworkCloseReason());

			}

		break;

	case CX3pStateMachine::EStateNetResultSent:

		// no action required

		break;

	case CX3pStateMachine::EStateSessionsClosed:

		// no action required

		break;

	case CX3pStateMachine::EStateCancelling:

		// Ensure that certain state transitions are prohibited when cancelling.

		x3pMachine.SetStillCancelling(ETrue);

		break;

	default:

		User::Panic(KProtocolModulePanic, EProtocolModuleX3pState);

		break;

		}

	// Handle any network-related error

	if (CNetworkInterface::ENone != netError)

		{

		x3pMachine.Observer().NetworkErrorReported();

		}

	}