1 /*

     2 * Copyright (c) 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 #ifndef AKNCBACONTENTOBSERVER_H

    18 #define AKNCBACONTENTOBSERVER_H

    19 

    20 #include <e32base.h>

    21 

    22 class CEikCba;

    23 

    24 /**

    25  * This class provides means to set content observer

    26  * for @c CEikCba.

    27  * @since S60 v5.2

    28  */

    29 class AknCbaContentObserver

    30     {

    31 public:

    32     /**

    33      * Sets content observer.

    34      * @param aCba Cba to be observer.

    35      * @param aCallBack Call back method to invoke when 

    36      *        value of 'empty OR invisible' boolean expression

    37      *        changes.

    38      */

    39     IMPORT_C static void SetContentObserver( 

    40         CEikCba* aCba, 

    41         TCallBack aCallBack );

    42     };

    43 

    44 #endif // AKNCBACONTENTOBSERVER_H