1 /*

     2  * ===========================================================================

     3  *  Name        : hgfswobservers.h

     4  *  Part of     : Huriganes / Fast Swap Server

     5  *  Description : Observer interfaces to get notifications from appui and from engine

     6  *  Version     : %version: sa1spcx1#4 %

     7  *

     8  *  Copyright © 2008 Nokia Corporation.

     9  *  This material, including documentation and any related 

    10  *  computer programs, is protected by copyright controlled by 

    11  *  Nokia Corporation. All rights are reserved. Copying, 

    12  *  including reproducing, storing, adapting or translating, any 

    13  *  or all of this material requires the prior written consent of 

    14  *  Nokia Corporation. This material also contains confidential 

    15  *  information which may not be disclosed to others without the 

    16  *  prior written consent of Nokia Corporation.

    17  * ===========================================================================

    18  */

    19 

    20 #ifndef __HGFSWOBSERVERS_H

    21 #define __HGFSWOBSERVERS_H

    22 

    23 /**

    24  * Interface to get notifications from appui when window groups

    25  * have changed.

    26  */

    27 class MHgFswTaskListObserver

    28     {

    29 public:

    30     /**

    31      * Function called by AppUi to notify about possible

    32      * changes in task list

    33      */

    34     virtual void UpdateTaskList() = 0;

    35     };

    36 

    37 /**

    38  * Interface to get notifications from appui's HandleResourceChangeL.

    39  */

    40 class MHgFswResourceObserver

    41     {

    42 public:

    43     /**

    44      * Function called by AppUi to notify about resource changes.

    45      */

    46     virtual void HandleResourceChange( TInt aType ) = 0;

    47     };

    48 

    49 /**

    50  * Observer interface to get notifications from engine

    51  * when fsw content has changed.

    52  */

    53 class MHgFswEngineObserver

    54     {

    55 public:

    56     /**

    57      * Called when there is a change in the task list.

    58      */

    59     virtual void FswDataChanged() = 0;

    60 

    61     /**

    62      * Called to find out how many clients are subscribed

    63      * for fsw content change notifications.

    64      */

    65     virtual TInt FswDataListenerCount() = 0;

    66     };

    67 

    68 /**

    69  * This class is interface for CHgFsHiddenAppList

    70  * to notify about list change

    71  */

    72 class MHgFsHiddenAppListObserver

    73     {

    74 public:

    75     /**

    76      * This function is called by CHgFsHiddenAppList when list is changed.

    77      */

    78     virtual void HiddenAppListUpdated() = 0;

    79     };

    80 

    81 #endif