// Copyright (c) 1999-2009 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 "diskchange.h"

#include "MSVPANIC.H"

CMsvNotifyDiskChange::CMsvNotifyDiskChange(RFs& aFs, MMsvDiskChangeObserver& aObserver)

: CMsgActive(EPriorityHigh), iFs(aFs), iObserver(aObserver)

	{

	CActiveScheduler::Add(this);

	}

CMsvNotifyDiskChange::~CMsvNotifyDiskChange()

	{

	Cancel();

	}

TInt CMsvNotifyDiskChange::Start(const TDriveUnit& aDrive, TUint aUniqueId)

//

// aDrive - The drive for which we want notifications

// aUniqueId - The id we expect the drive to have

//

	{

	__ASSERT_DEBUG(!IsActive(), PanicServer(EMsvDiskChangeNotiferActive));

	iUniqueId = aUniqueId;

	// Check if the drive is removable

	TDriveInfo drive;

	TInt error = iFs.Drive(drive, TInt(aDrive));

	if (error != KErrNone)

		return error;

	iDrive = TInt(aDrive);

	// Setup file system notification

	iFs.NotifyChange(ENotifyDisk, iStatus);

	SetActive();

	// See if the disk is currently available

	TVolumeInfo volume;

	iDiskRemoved = iFs.Volume(volume, TInt(iDrive)) != KErrNone || iDiskMissing;

	return KErrNone;

	}

void CMsvNotifyDiskChange::DoCancel()

	{

	iFs.NotifyChangeCancel();

	}

void CMsvNotifyDiskChange::DoRunL()

	{

	// Flag to indicate we should continue to notify of disk changes

	TBool keepGoing = ETrue;

	// Get disk details - If this fails assume it's missing

	TVolumeInfo volume;

	if (iFs.Volume(volume, TInt(iDrive)) != KErrNone || iDiskMissing)

		{

		if (!iDiskRemoved)

			{

			// The disk has been removed

			keepGoing = iObserver.DiskRemoved(iDrive);

			}

		iDiskRemoved = ETrue;

		}

	else if (iDiskRemoved)

		{

		if (iUniqueId != volume.iUniqueID || iWrongId)

			{

			// The incorrect disk is being used

			keepGoing = iObserver.DiskChanged(iDrive, volume.iUniqueID);

			}

		else

			{

			// The correct disk has been inserted

			keepGoing = iObserver.DiskInserted(iDrive);

			}

		iDiskRemoved = EFalse;

		}

	// Setup file system notification

	if (keepGoing)

		{

		iFs.NotifyChange(ENotifyDisk, iStatus);

		SetActive();

		}

	}