1 // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "diskchange.h"

    17 #include "MSVPANIC.H"

    18 

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

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

    21 	{

    22 	CActiveScheduler::Add(this);

    23 	}

    24 

    25 CMsvNotifyDiskChange::~CMsvNotifyDiskChange()

    26 	{

    27 	Cancel();

    28 	}

    29 

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

    31 //

    32 // aDrive - The drive for which we want notifications

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

    34 //

    35 	{

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

    37 

    38 	iUniqueId = aUniqueId;

    39 

    40 	// Check if the drive is removable

    41 	TDriveInfo drive;

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

    43 	if (error != KErrNone)

    44 		return error;

    45 

    46 	iDrive = TInt(aDrive);

    47 

    48 	// Setup file system notification

    49 	iFs.NotifyChange(ENotifyDisk, iStatus);

    50 	SetActive();

    51 

    52 	// See if the disk is currently available

    53 	TVolumeInfo volume;

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

    55 

    56 	return KErrNone;

    57 	}

    58 

    59 void CMsvNotifyDiskChange::DoCancel()

    60 	{

    61 	iFs.NotifyChangeCancel();

    62 	}

    63 

    64 void CMsvNotifyDiskChange::DoRunL()

    65 	{

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

    67 	TBool keepGoing = ETrue;

    68 

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

    70 	TVolumeInfo volume;

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

    72 		{

    73 		if (!iDiskRemoved)

    74 			{

    75 			// The disk has been removed

    76 			keepGoing = iObserver.DiskRemoved(iDrive);

    77 			}

    78 

    79 		iDiskRemoved = ETrue;

    80 		}

    81 	else if (iDiskRemoved)

    82 		{

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

    84 			{

    85 			// The incorrect disk is being used

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

    87 			}

    88 		else

    89 			{

    90 			// The correct disk has been inserted

    91 			keepGoing = iObserver.DiskInserted(iDrive);

    92 			}

    93 

    94 		iDiskRemoved = EFalse;

    95 		}

    96 	

    97 	// Setup file system notification

    98 	if (keepGoing)

    99 		{

   100 		iFs.NotifyChange(ENotifyDisk, iStatus);

   101 		SetActive();

   102 		}

   103 	}

   104