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:  This is the implementation of application class

    15 *

    16 */

    17 

    18 

    19 #include <e32std.h>

    20 #include <e32uid.h>

    21 #include <e32svr.h>

    22 #include <ecom/ecom.h>

    23 #include <ecom/implementationinformation.h>

    24 

    25 #include "hidinterfaces.h"

    26 #include "decode.h"

    27 #include "layout.h"

    28 #include "library.h"

    29 #include "debug.h"

    30 

    31 

    32 CLayoutLibrary* CLayoutLibrary::NewL()

    33     {

    34     CLayoutLibrary* self = new (ELeave) CLayoutLibrary;

    35 

    36     // No two phase construction required

    37 

    38     return self;

    39     }

    40 

    41 CLayoutLibrary::CLayoutLibrary()

    42         : iId(0), iLoaded(EFalse), iLayout(0)

    43     {

    44     // Nothing else to do

    45     }

    46 

    47 CLayoutLibrary::~CLayoutLibrary()

    48     {

    49     TRACE_INFO( (_L("[HID]\t~CLayoutLibrary() 0x%08x"), this));

    50     delete iLayout;

    51     if (iLoaded)

    52         {

    53         iLoaded = EFalse;

    54         iId = 0;

    55         }

    56     REComSession::FinalClose();

    57     }

    58 

    59 // ----------------------------------------------------------------------

    60 

    61 TInt CLayoutLibrary::SetLayout(TInt aId)

    62     {

    63     TInt err = KErrNone;

    64     TBool foundLayout = EFalse;

    65 

    66     // Implementation info array

    67     RImplInfoPtrArray implInfoArray;

    68 

    69     TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: id=%d"), aId));

    70 

    71     if( aId == iId )

    72         {

    73         TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: Same layout id=%d, don't load twice"), aId));

    74         return KErrNone;

    75         }

    76 

    77     // Plain ignore is enough. If listing leaves, the array is just empty.

    78     TRAP_IGNORE( REComSession::ListImplementationsL( KHidLayoutPluginInterfaceUid, implInfoArray ) );

    79 

    80     TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: %d plugins listed"),implInfoArray.Count() ));

    81 

    82     if ( 0 == implInfoArray.Count())

    83         {

    84         TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: No Drivers found")));

    85         err = KErrNotFound;

    86         }

    87     else

    88         {

    89         for (TInt i=0; i<implInfoArray.Count() && !foundLayout; i++)

    90             {

    91             // parse implementation UID

    92             CImplementationInformation* info = implInfoArray[ i ];

    93             TUid implUid = info->ImplementationUid();

    94             TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: load plugin 0x%08x"),implUid ));

    95             // load driver

    96             // Trap so other drivers will be enumerated even if

    97             // this fails:

    98             CHidLayoutPluginInterface* plugin = NULL;

    99             TRAPD( err,

   100                    plugin = CHidLayoutPluginInterface::NewL( implUid );

   101                    TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: plugin loaded")));

   102                  );

   103 

   104             if( err == KErrNone)

   105                 {

   106                 CKeyboardLayout* layout = reinterpret_cast<CKeyboardLayout*>(plugin);

   107                 if (aId == layout->LayoutId())

   108                     {

   109                     TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: Found layout %d!"), aId));

   110                     foundLayout = ETrue;

   111                     // Swap the current layout object:

   112                     CKeyboardLayout* tmpLayout = iLayout;

   113                     iLayout = layout;

   114                     iId = aId;

   115                     iLoaded = ETrue;

   116                     TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: delete old layout")));

   117                     delete tmpLayout;

   118                     }

   119                 else

   120                     {

   121                     TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: wrong layout, delete plugin")));

   122                     delete plugin;

   123                     }

   124                 }

   125             else

   126                 {

   127                 TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: plugin creation failed")));

   128                 }

   129             }// end of for loop

   130         }

   131 

   132     if( !foundLayout )

   133         {

   134         TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: NO PLUGIN FOUND")));

   135         }

   136     TRACE_INFO( (_L("[HID]\tCLayoutLibrary::SetLayout: Plugin listing ready, delete info array")));

   137     implInfoArray.ResetAndDestroy();

   138     implInfoArray.Close();

   139     return err;

   140     }

   141 

   142 // End of file

   143