wvsettings20/IMPSSrc/CIMPSSAPNotifier.cpp
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     1 /*
       
     2 * Copyright (c) 2005 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:  SAP settings central repository event notifier.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 // INCLUDE FILES
       
    20 
       
    21 #include 	<e32std.h>
       
    22 #include	<e32svr.h>
       
    23 #include	<centralrepository.h>
       
    24 #include	"CIMPSSAPNotifier.h"
       
    25 #include	"mimpssapobserver.h"
       
    26 
       
    27 // CONSTANTS
       
    28 
       
    29 // These consts define cenrep Ids which when changed cause notification event.
       
    30 // For now it is the whole SAP Settings Id range for all access groups.
       
    31 const TUint32 KNotifyMask = 0x00000000;
       
    32 const TUint32 KNotifyIds = 0x00000000;
       
    33 
       
    34 const TUint32 KGroupMask = 0xFC000000; // SAP base id mask: 6 first bits
       
    35 const TUint32 KPECGroup = 0xC0000000; // do not modify
       
    36 const TUint32 KIMGroup = 0xC4000000; // do not modify
       
    37 
       
    38 // ============================ MEMBER FUNCTIONS ===============================
       
    39 
       
    40 // -----------------------------------------------------------------------------
       
    41 // CIMPSSAPNotifier::CIMPSSAPNotifier
       
    42 // C++ default constructor can NOT contain any code, that
       
    43 // might leave.
       
    44 // -----------------------------------------------------------------------------
       
    45 //
       
    46 CIMPSSAPNotifier::CIMPSSAPNotifier( TInt aPriority ) : CActive( aPriority )
       
    47     {
       
    48     CActiveScheduler::Add( this );
       
    49     }
       
    50 
       
    51 // -----------------------------------------------------------------------------
       
    52 // CIMPSSAPNotifier::ConstructL
       
    53 // Symbian 2nd phase constructor can leave.
       
    54 // -----------------------------------------------------------------------------
       
    55 //
       
    56 void CIMPSSAPNotifier::ConstructL( TUid aRepositoryUid )
       
    57     {
       
    58     iRepository = CRepository::NewL( aRepositoryUid );
       
    59     }
       
    60 
       
    61 // -----------------------------------------------------------------------------
       
    62 // CIMPSSAPNotifier::NewL
       
    63 // Two-phased constructor.
       
    64 // -----------------------------------------------------------------------------
       
    65 //
       
    66 CIMPSSAPNotifier* CIMPSSAPNotifier::NewL( TInt aPriority, TUid aRepositoryUid )
       
    67     {
       
    68     CIMPSSAPNotifier* self = new( ELeave ) CIMPSSAPNotifier( aPriority );
       
    69 
       
    70     CleanupStack::PushL( self );
       
    71     self->ConstructL( aRepositoryUid );
       
    72     CleanupStack::Pop();
       
    73 
       
    74     return self;
       
    75     }
       
    76 
       
    77 // Destructor
       
    78 CIMPSSAPNotifier::~CIMPSSAPNotifier()
       
    79     {
       
    80     Cancel();
       
    81     iObservers.Close();
       
    82     delete iRepository;
       
    83     }
       
    84 
       
    85 // -----------------------------------------------------------------------------
       
    86 // CIMPSSAPNotifier::AddObserverL()
       
    87 // -----------------------------------------------------------------------------
       
    88 //
       
    89 void CIMPSSAPNotifier::AddObserverL( MIMPSSAPObserver* aObserver,
       
    90                                      TIMPSAccessGroup aGroup )
       
    91     {
       
    92     if ( !aObserver )
       
    93         {
       
    94         User::Leave( KErrArgument );
       
    95         }
       
    96 
       
    97     TIMPSObserverTypePair obs( aObserver, aGroup );
       
    98 
       
    99     iObservers.AppendL( obs );
       
   100     if ( iObservers.Count() == 1 )
       
   101         {
       
   102         RequestNotificationL(); // request only once
       
   103         }
       
   104     }
       
   105 
       
   106 
       
   107 // -----------------------------------------------------------------------------
       
   108 // CIMPSSAPNotifier::RemoveObserver()
       
   109 // -----------------------------------------------------------------------------
       
   110 //
       
   111 void CIMPSSAPNotifier::RemoveObserver( MIMPSSAPObserver* aObserver )
       
   112     {
       
   113     if ( !aObserver )
       
   114         {
       
   115         return;
       
   116         }
       
   117     TInt count( iObservers.Count() );
       
   118     for ( TInt i( 0 ); i < count; i++ )
       
   119         {
       
   120         if ( iObservers[ i ].Observer() == aObserver )
       
   121             {
       
   122             iObservers.Remove( i );
       
   123             }
       
   124         }
       
   125 
       
   126     if ( iObservers.Count() == 0 )
       
   127         {
       
   128         //cancel any outstanding notification request
       
   129         Cancel();
       
   130         }
       
   131     }
       
   132 
       
   133 
       
   134 // -----------------------------------------------------------------------------
       
   135 // CIMPSSAPNotifier::RunL()
       
   136 // -----------------------------------------------------------------------------
       
   137 //
       
   138 void CIMPSSAPNotifier::RunL()
       
   139     {
       
   140     if ( iStatus != KErrCancel )
       
   141         {
       
   142         NotifyObservers();
       
   143         RequestNotificationL();
       
   144         }
       
   145     }
       
   146 
       
   147 // -----------------------------------------------------------------------------
       
   148 // CIMPSSAPNotifier::RunError()
       
   149 // -----------------------------------------------------------------------------
       
   150 //
       
   151 TInt CIMPSSAPNotifier::RunError( TInt /*aError*/ )
       
   152     {
       
   153     return KErrNone;
       
   154     }
       
   155 
       
   156 // -----------------------------------------------------------------------------
       
   157 // CIMPSSAPNotifier::DoCancel()
       
   158 // -----------------------------------------------------------------------------
       
   159 //
       
   160 void CIMPSSAPNotifier::DoCancel()
       
   161     {
       
   162     iRepository->NotifyCancelAll();
       
   163     }
       
   164 
       
   165 // -----------------------------------------------------------------------------
       
   166 // CIMPSSAPNotifier::RequestNotificationL()
       
   167 // -----------------------------------------------------------------------------
       
   168 //
       
   169 
       
   170 void CIMPSSAPNotifier::RequestNotificationL()
       
   171     {
       
   172     User::LeaveIfError( iRepository->NotifyRequest( KNotifyIds, KNotifyMask,
       
   173                                                     iStatus ) );
       
   174     SetActive(); // we have outstanding request now
       
   175     }
       
   176 
       
   177 
       
   178 // -----------------------------------------------------------------------------
       
   179 // CIMPSSAPNotifier::NotifyObservers()
       
   180 // -----------------------------------------------------------------------------
       
   181 //
       
   182 
       
   183 void CIMPSSAPNotifier::NotifyObservers()
       
   184     {
       
   185     TInt count( iObservers.Count() );
       
   186     TUint32 completionValue( iStatus.Int() );
       
   187     completionValue &= KGroupMask;
       
   188 
       
   189     for ( TInt ii( count ); --ii >= 0; )
       
   190         {
       
   191         if ( completionValue == KPECGroup )
       
   192             {
       
   193             if ( iObservers[ ii ].Group() == EIMPSPECAccessGroup )
       
   194                 {
       
   195                 iObservers[ ii ].Observer()->HandleSAPEvent(
       
   196                     MIMPSSAPObserver::ESAPSettingChanged );
       
   197                 }
       
   198             }
       
   199 
       
   200         else if ( completionValue == KIMGroup )
       
   201             {
       
   202             if ( iObservers[ ii ].Group() == EIMPSIMAccessGroup )
       
   203                 {
       
   204                 iObservers[ ii ].Observer()->HandleSAPEvent(
       
   205                     MIMPSSAPObserver::ESAPSettingChanged );
       
   206                 }
       
   207             }
       
   208         else
       
   209             {
       
   210             // no notifications for unknown access groups
       
   211             }
       
   212 
       
   213         }
       
   214     }
       
   215 
       
   216 
       
   217 
       
   218 //  End of File