// Copyright (c) 2001-2009 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:

//

#include <et_phone.h>		// For CTelObject

#include "atgprsntwkregstatuschange.h"		// Header file for this source file

#include "mSLOGGER.H"					// For LOGTEXT macros

#include "ATIO.H"							// For CATIO class

#include "Matstd.h"						// For AT command strings and timeout values

#include "gprs.h"							// for CGprs class

#include "NOTIFY.H"						// for CNotifications

// Macro for logging text to the log file using the local class name and a simpler 

// call style.

#ifdef __LOGDEB__

_LIT8(KLogEntry,"CATGprsNtwkRegStatusChange::%S\t%S");

#define LOCAL_LOGTEXT(function,text) {_LIT8(F,function);_LIT8(T,text);LOGTEXT3(KLogEntry,&F,&T);}

#else

#define LOCAL_LOGTEXT(function,text)

#endif

CATGprsNtwkRegStatusChange* CATGprsNtwkRegStatusChange::NewL(CATIO* aIo,CTelObject* aTelObject, CPhoneGlobals* aGlobals)

/**

 * Standard class factory function

 */

 	{

	return (new(ELeave) CATGprsNtwkRegStatusChange(aIo,aTelObject,aGlobals));

	// Currently no need for a ConstructL call, maybe we'll need one in the future...

	}

CATGprsNtwkRegStatusChange::CATGprsNtwkRegStatusChange(CATIO* aIo, CTelObject* aTelObject,CPhoneGlobals* aGlobals)

	:CATBase(aIo,aTelObject,aGlobals)

 	{

	Enable();

	}

CATGprsNtwkRegStatusChange::~CATGprsNtwkRegStatusChange()

	{

	Disable();

	}

void CATGprsNtwkRegStatusChange::Enable()

/** 

 * Adds the all important +CGREG:* expect string so that our ::EventSignal is called when 

 * we get an unsolicited network registration status changes.

 */

	{

	LOCAL_LOGTEXT("Enable","Adding +CGREG:* expect string");

	// Ensure +CRING is not on the expect string stack before we add it.

	// (Doing things this way means we do not have to maintain an expect string in our

	// member data)

	iIo->RemoveExpectStrings(this);		

	// Add +CRING expect string

	__ASSERT_ALWAYS(iIo->AddExpectString(this,KCGREGMatchString) != NULL, Panic(EGeneral));

	}

void CATGprsNtwkRegStatusChange::Disable()

/** 

 * Removes all expect strings added by this object. 

 * This object will not process +CRING until ::Enable() is called.

 */

	{

	LOCAL_LOGTEXT("Disable","Removing all CATGprsNtwkRegStatusCchange expect strings");

	iIo->RemoveExpectStrings(this);		

	}

void CATGprsNtwkRegStatusChange::EventSignal(TEventSource aSource)

/**

 * Called when a '+CGREG:' is received.

 * Parses the +CGREG:... string which we recieved from the phone and then triggers

 * the EPacketNtwkRegStatusChange notification as appropriate.

 */

	{

	LOCAL_LOGTEXT("EventSignal","Enter function");

	TInt ret(KErrNone);

	RPacketService::TRegistrationStatus regStatus(RPacketService::EUnknown);

	__ASSERT_ALWAYS(aSource == EReadCompletion, Panic(EATCommand_IllegalCompletionReadExpected));

	TRAP(ret,ParseResponseL(regStatus));

	if(ret!=KErrNone)

		{

		LOCAL_LOGTEXT("EventSignal","Unable to parse CGREG response");

		}

	else

		{

		//

		// Trigger the notificaiton mechanism

		LOCAL_LOGTEXT("EventSignal","Triggering EPacketNtwkRegStatusChange notification");

		((CGprs*)iTelObject)->SetRegistrationStatus(regStatus);

		iPhoneGlobals->iNotificationStore->CheckNotification(iTelObject, EPacketNtwkRegStatusChange);

		// We are done, but there is no client request to complete

		// we just return and wait until we get our next +CGREG:* command

		}

	}

void CATGprsNtwkRegStatusChange::ParseResponseL(RPacketService::TRegistrationStatus& aRegStatus)

/**

 * Parses the +CGREG unsolicited string from the modem.

 * An example response woulf be '+CGREG: 2' where the value denotes the

 * current registration status.

 * If parsing succeeds then aRegStatus is updated.

 */

	{

	ParseBufferLC();

	TDblQueIter<CATParamListEntry> iter(iRxResults);

	CATParamListEntry* entry=iter++;

	// Validate we have +CGREG at the start 

	if((entry==NULL) ||(entry->iResultPtr!=KCGREGResponseString))

		{

		LOCAL_LOGTEXT("ParseResponseL","Failed to find +CGREG:");

		User::Leave(KErrNotSupported);

		}

	// Read in value

	entry=iter++;

	if(!entry)

		{

		LOCAL_LOGTEXT("ParseResponseL","Failed to find 1st parameter");

		User::Leave(KErrNotFound);

		}		

	TInt etsiVal;

	CATParamListEntry::EntryValL(entry,etsiVal);

	// Convert value to equivalent EtelMM enum

	switch(etsiVal)

		{

	case 0:		// ETSI value as defined in ETSI 07.07 section 10.1.14

		aRegStatus=RPacketService::ENotRegisteredNotSearching;

		break;

	case 1:		// ETSI value as defined in ETSI 07.07 section 10.1.14

		aRegStatus=RPacketService::ERegisteredOnHomeNetwork;

		break;

	case 2:		// ETSI value as defined in ETSI 07.07 section 10.1.14

		aRegStatus=RPacketService::ENotRegisteredSearching;

		break;

	case 3:		// ETSI value as defined in ETSI 07.07 section 10.1.14

		aRegStatus=RPacketService::ERegistrationDenied;

		break;

	case 4:		// ETSI value as defined in ETSI 07.07 section 10.1.14

		aRegStatus=RPacketService::EUnknown;

		break;

	case 5:		// ETSI value as defined in ETSI 07.07 section 10.1.14

		aRegStatus=RPacketService::ERegisteredRoaming;

		break;

	default:

		aRegStatus=RPacketService::EUnknown;

		break;

		}

	CleanupStack::PopAndDestroy();	// Pop and destroy the object pushed by ParseBufferLC()

	}

void CATGprsNtwkRegStatusChange::CompleteWithIOError(TEventSource /*aSource*/,TInt /*aStatus*/)

	{

	LOCAL_LOGTEXT("CATGprsNtwkRegStatusChange","CompleteWithIOError");

	// CATIO removes expect strings in event of IO error so don't do it here

	// Also, CATErrorHandler::CleanUp completes notification with error

	}