// Copyright (c) 2007-2009 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:

// cenrepobserver.h

// 

//

#include "cenrepobserver.h"

#include <centralrepository.h>

CCenRepListener* CCenRepListener::NewL( MCenRepObserver& aCallback, CRepository& aSession, TUint32 aId)

	{

	CCenRepListener* self = new(ELeave) CCenRepListener(aCallback, aSession, aId);

	return self;

	}

void CCenRepListener::StartListeningL()

	{

	if(!IsActive())

		{

		TInt err = iSession.NotifyRequest(iId, iStatus);

		User::LeaveIfError(err);

		SetActive();		

		}

	}

void CCenRepListener::StopListening()

	{

	Cancel();

	}

CCenRepListener::~CCenRepListener()

	{

	Cancel();

	}

void CCenRepListener::RunL()

	{

	TInt err(KErrNone);

	TInt newVal(0);

	// Careful here! If request completes successfully, iStatus is populated with the ID of the changed key.

	// Otherwise, it will contain a standard error code.

	if (iStatus == iId) // check that the notification is for the key that we are watching

		{

		err = iSession.Get(iId, newVal);

		}

	else if(iStatus < KErrNone) // standard error code if an error occurred

		{

		err = iStatus.Int();

		}

	else // we have received a notification for a key that we are not interested in - there's something wrong in cenrep

		{

		iCallback.HandleNotifyError(iId, KErrArgument, this);

		// return without reissuing the request, as "only one notification per setting per CRepository may be active at any one time."

		return;

		}

	StartListeningL();

	// now err can only be an error code (<=0)

	if (err == KErrNone)

		{

		iCallback.HandleNotifyInt(iId, newVal);

		}

	else

		{

		iCallback.HandleNotifyError(iId, err, this);

		}

	}

void CCenRepListener::DoCancel()

	{

	iSession.NotifyCancel(iId);

	}

CCenRepListener::CCenRepListener( MCenRepObserver& aCallback, CRepository& aSession, TUint32 aId)

	: CActive(EPriorityNormal), iCallback(aCallback), iSession(aSession), iId(aId)

	{

	CActiveScheduler::Add(this);

	}