1 /*

     2  * Copyright (c) 2008 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:  ?Description

    15  *

    16  */

    17 

    18 // INCLUDE FILES

    19 #include <f32file.h>

    20 #include <s32file.h>

    21 #include <sysutil.h>

    22 #include "casrvmmchistory.h"

    23 // CONSTANTS

    24 LOCAL_D const TInt KCaMmcHistoryLength = 2;

    25 

    26 // ==================== MEMBER FUNCTIONS ====================

    27 

    28 // ---------------------------------------------------------

    29 // CMenuSrvMmcHistory::LoadL

    30 // ---------------------------------------------------------

    31 //

    32 EXPORT_C void CCaSrvMmcHistory::LoadL( RFs& aFs, const TDesC& aFname )

    33     {

    34     iMmcList.Reset();

    35     TUint att;

    36     if( KErrNotFound != aFs.Att( aFname, att ) )

    37         {

    38         RFileReadStream stream;

    39         CleanupClosePushL( stream );

    40         User::LeaveIfError( stream.Open( aFs, aFname, EFileStream

    41                 | EFileShareReadersOnly ) );

    42         TInt len = Min( KCaMmcHistoryLength, stream.ReadInt32L() );

    43         while( len-- )

    44             {

    45             iMmcList.AppendL( stream.ReadUint32L() );

    46             }

    47         CleanupStack::PopAndDestroy( &stream );

    48         }

    49     }

    50 

    51 // ---------------------------------------------------------

    52 // CMenuSrvMmcHistory::SaveL

    53 // Method do not work if there is no free space on C drive.

    54 // ---------------------------------------------------------

    55 //

    56 EXPORT_C void CCaSrvMmcHistory::SaveL( RFs& aFs, const TDesC& aFname )

    57     {

    58     if( SysUtil::DiskSpaceBelowCriticalLevelL( &aFs, 0, EDriveC ) )

    59         {

    60         return;

    61         }

    62 

    63     RFileWriteStream stream;

    64     CleanupClosePushL( stream );

    65     User::LeaveIfError( stream.Replace( aFs, aFname, EFileStream

    66             | EFileShareExclusive ) );

    67     stream.WriteInt32L( iMmcList.Count() );

    68     for( TInt i = 0; i < iMmcList.Count(); i++ )

    69         {

    70         stream.WriteUint32L( iMmcList[i] );

    71         }

    72     CleanupStack::PopAndDestroy( &stream );

    73     }

    74 

    75 // ---------------------------------------------------------

    76 // CMenuSrvMmcHistory::InsertL

    77 // ---------------------------------------------------------

    78 //

    79 EXPORT_C void CCaSrvMmcHistory::InsertL( TUint aMmc )

    80     {

    81     TInt i = iMmcList.Find( aMmc );

    82     switch( i )

    83         {

    84         case 0:

    85             {

    86             // aMmc is already first, do nothing.

    87             break;

    88             }

    89 

    90         case KErrNotFound:

    91             {

    92             // aMmc is not in the list. Insert as first.

    93             if( iMmcList.Count() == KCaMmcHistoryLength )

    94                 {

    95                 // List already full - remove last item to make space.

    96                 iMmcList.Remove( KCaMmcHistoryLength - 1 );

    97                 }

    98             iMmcList.InsertL( aMmc, 0 );

    99             break;

   100             }

   101 

   102         default:

   103             {

   104             // aMmc is in the list, but not first. Move to first place.

   105             iMmcList.Remove( i );

   106             iMmcList.InsertL( aMmc, 0 );

   107             break;

   108             }

   109         }

   110     }

   111 

   112 // ---------------------------------------------------------

   113 // CMenuSrvMmcHistory::Find

   114 // ---------------------------------------------------------

   115 //

   116 EXPORT_C TInt CCaSrvMmcHistory::Find( TUint aMmc )

   117     {

   118     return iMmcList.Find( aMmc );

   119     }

   120 

   121 //  End of File