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 the License "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:  Class which allocates random UIDs from a given range

    15 *

    16 */

    17 

    18 #include <e32std.h>

    19 #include "UidAllocator.h"

    20 

    21 // MEMBER FUNCTION DEFINITIONS

    22 

    23 // ============================================================================

    24 // TUidAllocator::AllocateL()

    25 // Allocate a UID or leave with KErrNotFound

    26 //

    27 // @since 3.1

    28 // ============================================================================

    29 //

    30 TInt TUidAllocator::AllocateL( const RUidArray& aUsedUids, TInt aDriveLetter )

    31     {

    32     if ( 'C' == aDriveLetter )

    33         {

    34         aDriveLetter = 'c';

    35         }

    36 

    37     TInt uidStart = ( ('c' == aDriveLetter) ?

    38                       KWidgetUidInternalMemoryStart :

    39                       KWidgetUidExternalMemoryStart );

    40     TInt uidStop = ( ('c' == aDriveLetter) ?

    41                      KWidgetUidExternalMemoryStart :

    42                      KWidgetUidExternalMemoryStop + 1);

    43 

    44     TInt uid = uidStart;

    45     for ( ; uid < uidStop; ++uid )

    46         {

    47         if ( KErrNotFound == aUsedUids.Find( TUid::Uid( uid ) ) )

    48             {

    49             break;

    50             }

    51         }

    52     if ( uid == uidStop )

    53         {

    54         User::Leave( KErrNotFound );

    55         }

    56     return uid;

    57     }

    58 

    59 TBool TUidAllocator::IsWidget( TUid aUid )

    60     {

    61     return ( ( aUid.iUid >= KWidgetUidLowerBound

    62                && aUid.iUid <= KWidgetUidUpperBound )?

    63              ETrue : EFalse );

    64     }