// Copyright (c) 2003-2009 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:

//

/**

 @file SIGSTRGTH.CPP

*/

#include "sigstrgth.h"

CAgentSignalStrengthWatcher* CAgentSignalStrengthWatcher::NewL(RMobilePhone& aPhone)

/**

Allocates memory to class CAgentSignalStrengthWatcher

@param aPhone,encapsulates access to a mobile phone.

@return a pointer to class CAgentSignalStrengthWatcher.

@exception if memory allocation fails.

*/

	{

	CAgentSignalStrengthWatcher* self = new(ELeave)CAgentSignalStrengthWatcher(aPhone);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

CAgentSignalStrengthWatcher::~CAgentSignalStrengthWatcher()

/**

Destructor

*/

	{

	Cancel();

	}

TInt CAgentSignalStrengthWatcher::CurrentSignalStrength(TInt32& aSigStrength)

/**

Retrieve signal strength  of the current Agent.

@param aSigStrength, denotes the signal strength.

@return KErrUnknown if the signal strength has not yet been retrieved else KErrNone

*/

	{

	if(iState == EInitialising)

		{

		// The signal strength has not yet been retrieved

		return KErrUnknown;

		}

	aSigStrength=iSigStrengthInDBm;

	return KErrNone;

	}

CAgentSignalStrengthWatcher::CAgentSignalStrengthWatcher(RMobilePhone& aPhone)

: CActive(EPriorityStandard), iPhone(aPhone), iState(EInitialising)

	{

	CActiveScheduler::Add(this);

	}

void CAgentSignalStrengthWatcher::ConstructL()

	{

	// Start watching for signal strength

	iPhone.GetSignalStrength(iStatus,iSigStrengthInDBm,iSigStrengthInBars);

	SetActive();

	}

void CAgentSignalStrengthWatcher::RunL()

	{

	if(iStatus == KErrNone)

		{

		if(iSigStrengthInDBm != 0)

			{

			// The sig strength will be zero if not supported by the TSY

			if(iState == EInitialising)

				{

				iState = EUpdating;

				}

			// Renew request

			iPhone.NotifySignalStrengthChange(iStatus,iSigStrengthInDBm,iSigStrengthInBars);

			SetActive();

			}

		}

	}

void CAgentSignalStrengthWatcher::DoCancel()

	{

	if(iState == EInitialising)

		{

		iPhone.CancelAsyncRequest(EMobilePhoneGetSignalStrength);

		}

	else

		{

		// Must be EUpdating

		iPhone.CancelAsyncRequest(EMobilePhoneNotifySignalStrengthChange);

		}

	}