1 /*

     2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *     Class for observing free disk space and if disk space goes under critical

    16 *     level this cancels itself.

    17 

    18 *

    19 */

    20 

    21 

    22 // INCLUDE FILES

    23 #include <e32base.h>                            // Basic Symbian Includes

    24 #include <MuiuMsvUiServiceUtilities.h>          // Muiu Utilities

    25 #include <ImumInternalApi.h>        // CImumInternalApi

    26 

    27 #include "ImumDiskSpaceObserverOperation.h"

    28 #include "ImumDiskSpaceObserver.h"              // CImumDiskSpaceObserver

    29 #include "ImumMtmLogging.h"

    30 

    31 // CONSTANTS

    32 const TUint KImumCriticalThreshold = 131072;

    33 const TUint KImumSafetyMargin = 204800;

    34 

    35 // ----------------------------------------------------------------------------

    36 // CImumDiskSpaceObserverOperation

    37 // C++ default constructor can NOT contain any code, that

    38 // might leave.

    39 // ----------------------------------------------------------------------------

    40 CImumDiskSpaceObserverOperation::CImumDiskSpaceObserverOperation(

    41     CImumInternalApi& aMailboxApi,

    42     TInt aPriority,

    43     TRequestStatus& aObserverRequestStatus,

    44     MMsvProgressReporter& aReporter)

    45     :

    46     CImumOnlineOperation(

    47         aMailboxApi,

    48         aPriority,

    49         aObserverRequestStatus,

    50         aReporter)

    51     {

    52     IMUM_CONTEXT( CImumDiskSpaceObserverOperation::CImumDiskSpaceObserverOperation, 0, KImumMtmLog );

    53     IMUM_IN();

    54     IMUM_OUT();

    55     

    56     }

    57 

    58 // ----------------------------------------------------------------------------

    59 // CImumDiskSpaceObserverOperation::BaseConstructL()

    60 // ----------------------------------------------------------------------------

    61 void CImumDiskSpaceObserverOperation::BaseConstructL(TUid aMtmType)

    62     {

    63     IMUM_CONTEXT( CImumDiskSpaceObserverOperation::BaseConstructL, 0, KImumMtmLog );

    64     IMUM_IN();

    65     

    66     iDiskObserver = CImumDiskSpaceObserver::NewL(

    67         *this, iMsvSession.FileSession() );

    68     

    69     // Create own instance of API because ImumDiskSpaceObserver outlives

    70     // the owner of iMailboxApi reference in ImumOnlineOperation

    71     iEmailApi = CreateEmailApiL();

    72     

    73     CImumOnlineOperation::BaseConstructL( aMtmType );

    74     

    75     IMUM_OUT();

    76     }

    77 

    78 

    79 // ----------------------------------------------------------------------------

    80 // CImumDiskSpaceObserverOperation::~CImumDiskSpaceObserverOperation()

    81 // ----------------------------------------------------------------------------

    82 CImumDiskSpaceObserverOperation::~CImumDiskSpaceObserverOperation()

    83     {

    84     IMUM_CONTEXT( CImumDiskSpaceObserverOperation::~CImumDiskSpaceObserverOperation, 0, KImumMtmLog );

    85     IMUM_IN();

    86     

    87     delete iEmailApi;

    88     delete iDiskObserver;

    89     iDiskObserver = NULL;

    90     IMUM_OUT();

    91     }

    92 

    93 // ----------------------------------------------------------------------------

    94 // CImumDiskSpaceObserverOperation::DoCancel()

    95 // ----------------------------------------------------------------------------

    96 //

    97 void CImumDiskSpaceObserverOperation::DoCancel()

    98     {

    99     IMUM_CONTEXT( CImumDiskSpaceObserverOperation::DoCancel, 0, KImumMtmLog );

   100     IMUM_IN();

   101     

   102     iDiskObserver->Cancel();

   103     CImumOnlineOperation::DoCancel();

   104     IMUM_OUT();

   105     }

   106 

   107 // ----------------------------------------------------------------------------

   108 // CImumDiskSpaceObserverOperation::DoDiskSpaceCheckL()

   109 // ----------------------------------------------------------------------------

   110 //

   111 TInt CImumDiskSpaceObserverOperation::DoDiskSpaceCheckL()

   112     {

   113     IMUM_CONTEXT( CImumDiskSpaceObserverOperation::DoDiskSpaceCheckL, 0, KImumMtmLog );

   114     IMUM_IN();

   115     

   116     // Make sure we are operating in safe levels

   117     if( !MsvUiServiceUtilities::DiskSpaceBelowCriticalLevelWithOverheadL(

   118     	iEmailApi->MsvSession(), 0, KImumSafetyMargin ) )

   119         {

   120         // Get current drive

   121         TInt currentDrive = iEmailApi->MsvSession().CurrentDriveL();

   122         TInt64 currentLimit = KImumCriticalThreshold + KImumSafetyMargin;

   123 

   124         // Enough space, issue new request

   125         iDiskObserver->Cancel();

   126         iDiskObserver->NotifyDiskSpace( currentLimit, currentDrive );

   127         IMUM_OUT();

   128 

   129         return KErrNone;

   130         }

   131     IMUM_OUT();

   132 

   133     // Disk full for operation, indicate with error

   134     return KErrDiskFull;

   135     }

   136 

   137 // ----------------------------------------------------------------------------

   138 // CImumDiskSpaceObserverOperation::HandleDiskSpaceEvent()

   139 // ----------------------------------------------------------------------------

   140 //

   141 void CImumDiskSpaceObserverOperation::HandleDiskSpaceEvent()

   142     {

   143     IMUM_CONTEXT( CImumDiskSpaceObserverOperation::HandleDiskSpaceEvent, 0, KImumMtmLog );

   144     IMUM_IN();

   145     

   146     Cancel();

   147     IMUM_OUT();

   148     }

   149 

   150 //  End of File

   151 

   152