1 /*

     2 * Copyright (c) 2002-2009 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 *

    16 */

    17 

    18 

    19 #ifndef MCLFOPERATIONOBSERVER_H

    20 #define MCLFOPERATIONOBSERVER_H

    21 

    22 //  INCLUDES

    23 #include <e32def.h>

    24 

    25 // DATA TYPES

    26 /**

    27 * Content Listing Framework list model operation events

    28 */

    29 enum TCLFOperationEvent

    30     {

    31     /// Refresh operation is completed

    32     ECLFRefreshComplete = 0x0,

    33     /// Model content is obsolated and should be refreshed

    34     ECLFModelOutdated = 0x1

    35     };

    36 

    37 // FORWARD DECLARATIONS

    38 class MCLFOperationObserverExt;

    39 

    40 // CLASS DECLARATION

    41 

    42 /**

    43 *  Operation Observer is for observing operation events of the Content Listing

    44 *  Framework. Client application gets notified when asynchronous operations

    45 *  are completed. For example, ECLFRefreshComplete event is received when the

    46 *  asynchronous refresh operation is compeleted.

    47 *

    48 *  @lib ContentListingFramework.lib

    49 *  @since S60 3.1

    50 */

    51 class MCLFOperationObserver

    52     {

    53     public: // New functions

    54 

    55         /**

    56         * Abstract method to get list model operation events. This method is

    57         * called when an event is received.

    58         * @since S60 3.1

    59         * @param aOperationEvent Operation event code of the event

    60         * @param aError System wide error code if the operation did not

    61         *        succeed.

    62         */

    63         virtual void HandleOperationEventL( TCLFOperationEvent aOperationEvent,

    64                                             TInt aError ) = 0;

    65 

    66     protected:

    67 

    68         /**

    69         * Destructor.

    70         */

    71         virtual ~MCLFOperationObserver() {}

    72 

    73     private: // Extension interface

    74 

    75         /**

    76         * This member is internal and not intended for use.

    77         */

    78         virtual MCLFOperationObserverExt* Extension() { return NULL; }

    79 

    80 

    81     };

    82 

    83 #endif      // MCLFOPERATIONOBSERVER_H

    84 

    85 // End of File