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:  Collection observer interface.

    15 *

    16 */

    17 

    18 #ifndef M_AKNCOLLECTIONOBSERVER_H

    19 #define M_AKNCOLLECTIONOBSERVER_H

    20 

    21 class CAknItemActionMenu;

    22 

    23 /**

    24  * Collection observer.

    25  *

    26  * This interface is intended for those objects that are interested

    27  * of collection state and need to receive collection notifications.

    28  *

    29  * @lib eikcoctl

    30  * @since S60 v5.2

    31  */

    32 class MAknCollectionObserver

    33     {

    34 public:

    35 

    36     /**

    37      * This method is used to set the item action menu to observer.

    38      * 

    39      * @param aItemActionMenu Item action menu. 

    40      */

    41     virtual void SetItemActionMenu( CAknItemActionMenu* aItemActionMenu ) = 0;

    42 

    43     /**

    44      * This method is called when there are changes in collection state.

    45      * 

    46      * @param aCollectionVisible ETrue if changed collection is visible.

    47      */

    48     virtual void CollectionChanged( TBool aCollectionVisible ) = 0;

    49 

    50     /**

    51      * This method returns ETrue if collection observer is active.

    52      * 

    53      * @return ETrue if observer is active.

    54      */

    55     virtual TBool Active() const = 0;

    56 

    57     };

    58 

    59 #endif // M_AKNCOLLECTIONOBSERVER_H