1 /*

     2 * Copyright (c) 2008-2009 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:  Listens for changes in one CommsDat table through CenRep.

    15 *

    16 */

    17 

    18 #ifndef CMCOMMSDATNOTIFIER_H

    19 #define CMCOMMSDATNOTIFIER_H

    20 

    21 _LIT( KIapDisappear, "Iap disappears from CommsDat" );

    22 _LIT( KDestDisappear, "Destination disappears from CommsDat" );

    23 

    24 class CCmManagerImpl;

    25 class CRepository;

    26 class MCmCommsDatWatcher;

    27 

    28 // A stack to store watchers

    29 typedef CArrayPtrFlat<MCmCommsDatWatcher> CCmCallBackArray;

    30 

    31 // Used to notify parent view what happens during son's view editing.

    32 const TInt KCmNotifiedNone = 0;

    33 const TInt KCmNotifiedDestinationDisappear = 1;

    34 const TInt KCmNotifiedIapIsNotInThisDestination = 2;

    35 const TInt KCmNotifiedIapDisappear = 3;

    36 

    37 class MCmCommsDatWatcher

    38     {

    39 public:

    40     // watcher should implement this function to get the notification of CommsDat changes.

    41     // see class CCmManagerImpl for watcher registration

    42     virtual void CommsDatChangesL() = 0;

    43     };

    44 

    45 // Used for son's watcher to notify parent watcher that CommsDat has changes

    46 // if farther watcher wants to know what heppens when son's watcher exiting

    47 class CCmParentViewNotifier

    48     {

    49 public:

    50     virtual void NotifyParentView( TInt aValue ) = 0;

    51     };

    52 

    53 /*

    54  * CommsDat can suddenly change with some reasons, e.g., an application may suddenly add/delete a destination

    55  * and Iap. Those changes may affect CmManager. This class will listen to changes in one CommsDat table

    56  * through CenRep and inform related watcher that is interesting in CommsDat changes.

    57  */

    58 NONSHARABLE_CLASS( CCmCommsDatNotifier ) : public CActive

    59     {

    60 public:

    61 

    62     static CCmCommsDatNotifier* NewL( TUint32 aTableId );

    63 

    64     static CCmCommsDatNotifier* NewLC( TUint32 aTableId );

    65 

    66     virtual ~CCmCommsDatNotifier();

    67     

    68     void WatcherRegisterL( MCmCommsDatWatcher* aWatcher );

    69     void WatcherUnRegister( );

    70 

    71 private:

    72     CCmCommsDatNotifier( TUint32 aTableId );

    73 

    74     void ConstructL();

    75     TInt RequestNotifications();

    76     

    77     void DeleteCallBackArray();

    78 

    79 private: // Methods from base class

    80     void DoCancel();

    81     void RunL();

    82 

    83 private:

    84     TUint32 iTableId;

    85     CRepository* iRepository;

    86     MCmCommsDatWatcher* iWatcher; // callback object that wants to see changes in CommsDat

    87     CCmCallBackArray* iCallBackArray; // used as stack to go to the next view

    88     };

    89 

    90 #endif // CMCOMMSDATNOTIFIER_H

    91 

    92 // End-of-file