1 /*

     2 * Copyright (c) 2004 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:  callback interface for sort.

    15 *

    16 */

    17 

    18 

    19 #ifndef I_ALFSORTFUNCTION

    20 #define I_ALFSORTFUNCTION

    21 

    22 // CLASS DECLARATIONS

    23 namespace Alf

    24     {

    25     

    26 class IAlfMap;

    27 

    28 /**

    29  * callback- interface for sort.

    30  * 

    31  * @since S60 ?S60_version  

    32  * @status Draft

    33  */

    34 class IAlfSortFunction

    35     {

    36 public:

    37     /**

    38      * compares two leafs

    39      *

    40      * @param aFirst first parameter for comparison

    41      * @param aSecond second parameter for comparison

    42      * @return < 0, if aFirst is less than aSecond, > 0 if aFirst is more than aSecond,

    43                 0, if aFirst equals aSecond.

    44      * @since S60 ?S60_version

    45      */ 

    46     virtual int compareLeafs( const IAlfMap* aFirst, const IAlfMap* aSecond ) const = 0;

    47     

    48     };

    49     

    50     }

    51 #endif

    52 

    53 // End of File