/*

* Copyright (c) 2005-2009 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 <f32file.h> // for rfs

#include "ccntlowdiskmanager.h"

#include "ccntlogger.h"

/** Object factory method for CCntLowDiskManager.

*/

CCntLowDiskManager* CCntLowDiskManager::NewL(MContactLowDiskObserver& aObserver,

	TInt64 aThreshold, TInt aDrive, RFs& aFs)

	{

	CCntLowDiskManager* self = new(ELeave) CCntLowDiskManager(aObserver,

		aThreshold, aDrive, aFs);

	return self;

	}

/** Destructor. 

*/

CCntLowDiskManager::~CCntLowDiskManager()

	{

	Cancel();

	}

/** Request notification of disk space events from File Server.  This method

	covers the scenario where we start with low disk (i.e. already below the

	threshold).  We won't get a notification from the File Server session in

	this case (need to cross threshold).  Rather than repeat the code in RunL(),

	manually complete the request here to force a call of RunL().  The actual

	registration for disk space events takes place at the end of RunL().

*/

void CCntLowDiskManager::Start()

	{

	SetActive();

	TRequestStatus* status = &iStatus;

	User::RequestComplete(status, KErrNone);

	}

TBool CCntLowDiskManager::LowDiskL()

	{

	TVolumeInfo volumeInfo;	

	User::LeaveIfError(iFs.Volume(volumeInfo, iDrive));

	return (volumeInfo.iFree <= iThreshold);

	}

/** First phase default constructor.

*/

CCntLowDiskManager::CCntLowDiskManager(MContactLowDiskObserver& aObserver,

	TInt64 aThreshold, TInt aDrive, RFs& aFs)

	:

	CActive(EPriorityHigh), iObserver(aObserver), iThreshold(aThreshold),

	iDrive(aDrive), iFs(aFs), iWasLowDisk(EFalse)

	{

	CActiveScheduler::Add(this);

	}

/** Receives a disk space event and notifies the observer.

	@see CActive

*/

void CCntLowDiskManager::RunL()

	{

	TInt ret = iStatus.Int();

	if (ret != KErrNone)

		{

		return;

		}

	if (LowDiskL())

		{

		iWasLowDisk = ETrue;

		iObserver.HandleLowDiskL(ETrue);

		}

	else if (iWasLowDisk)

		{

		iWasLowDisk = EFalse;

		iObserver.HandleLowDiskL(EFalse);

		}

	// Request notification again.

	iFs.NotifyDiskSpace(iThreshold, iDrive, iStatus);

	SetActive();

	}

/** Recover if RunL() leaves.

	@see CActive

*/

TInt CCntLowDiskManager::RunError(TInt /*aError*/)

	{

	DEBUG_PRINT1(__VERBOSE_DEBUG__,_L("[CNTMODEL] CCntLowDiskManager::RunError(): RunL() has left!\n"));

	return (KErrNone);

	}

/**

	@see CActive

*/

void CCntLowDiskManager::DoCancel()

	{

	iFs.NotifyDiskSpaceCancel(iStatus);

	}