1 /*

     2 * Copyright (c) 2004 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:  Publish & Subscribe property change observer implementation

    15 *

    16 */

    17 

    18 

    19 

    20 // INCLUDE FILES

    21 #include "MIMPSSystemNotifierObserver.h"

    22 #include "CIMPSSystemNotifierPubSub.h"

    23 #include "CIMPSPropertyObserver.h"

    24 #include "IMPSSystemNotifyDefs.h"

    25 

    26 #include <sacls.h>

    27 

    28 // ============================ MEMBER FUNCTIONS ===============================

    29 

    30 // -----------------------------------------------------------------------------

    31 // CIMPSSystemNotifierPubSub::CIMPSSystemNotifierPubSub

    32 // C++ default constructor can NOT contain any code, that

    33 // might leave.

    34 // -----------------------------------------------------------------------------

    35 //

    36 CIMPSSystemNotifierPubSub::CIMPSSystemNotifierPubSub(

    37     MIMPSSystemNotifierObserver& aObserver,

    38     const TUid aKey

    39 )

    40         : iObserver( aObserver ),

    41         iKey( aKey )

    42     {

    43     }

    44 

    45 // -----------------------------------------------------------------------------

    46 // CIMPSSystemNotifierPubSub::ConstructL

    47 // Symbian 2nd phase constructor can leave.

    48 // -----------------------------------------------------------------------------

    49 //

    50 void CIMPSSystemNotifierPubSub::ConstructL()

    51     {

    52     iPropertyObserver = CIMPSPropertyObserver::NewL( *this );

    53     }

    54 

    55 // -----------------------------------------------------------------------------

    56 // CIMPSSystemNotifierPubSub::NewL

    57 // Two-phased constructor.

    58 // -----------------------------------------------------------------------------

    59 //

    60 CIMPSSystemNotifierPubSub* CIMPSSystemNotifierPubSub::NewL(

    61     MIMPSSystemNotifierObserver& aObserver,

    62     TUid aKey )

    63     {

    64     CIMPSSystemNotifierPubSub* self =

    65         new( ELeave ) CIMPSSystemNotifierPubSub( aObserver, aKey );

    66 

    67     CleanupStack::PushL( self );

    68     self->ConstructL();

    69     CleanupStack::Pop();

    70 

    71     return self;

    72     }

    73 

    74 

    75 // Destructor

    76 CIMPSSystemNotifierPubSub::~CIMPSSystemNotifierPubSub()

    77     {

    78     delete iPropertyObserver;

    79     }

    80 

    81 

    82 // -----------------------------------------------------------------------------

    83 // CIMPSSystemNotifierPubSub::Subscribe

    84 // (other items were commented in a header).

    85 // -----------------------------------------------------------------------------

    86 //

    87 TInt CIMPSSystemNotifierPubSub::Subscribe()

    88     {

    89     TInt err( KErrNone );

    90     TRAP( err,

    91           iPropertyObserver->ObservePropertyChangeL( KUidSystemCategory, iKey.iUid ) );

    92     return err;

    93     }

    94 

    95 // -----------------------------------------------------------------------------

    96 // CIMPSSystemNotifierPubSub::UnSubscribe

    97 // (other items were commented in a header).

    98 // -----------------------------------------------------------------------------

    99 //

   100 void CIMPSSystemNotifierPubSub::UnSubscribe()

   101     {

   102     iPropertyObserver->CancelObserve();

   103     }

   104 

   105 // -----------------------------------------------------------------------------

   106 // CIMPSSystemNotifierPubSub::GetIntKey

   107 // (other items were commented in a header).

   108 // -----------------------------------------------------------------------------

   109 //

   110 TInt CIMPSSystemNotifierPubSub::GetIntKey( TInt& aValue )

   111     {

   112     TInt err = RProperty::Get( KUidSystemCategory, iKey.iUid, aValue );

   113     return err;

   114     }

   115 

   116 // -----------------------------------------------------------------------------

   117 // CIMPSSystemNotifierPubSub::HandlePropertyNotificationEventL( TUid /*aCategory*/, TUint /*aKey*/ )

   118 //

   119 // (other items were commented in a header).

   120 // -----------------------------------------------------------------------------

   121 //

   122 void CIMPSSystemNotifierPubSub::HandlePropertyNotificationEventL( TUid /*aCategory*/, TUint /*aKey*/ )

   123     {

   124     TInt value( KErrNone );

   125     User::LeaveIfError( RProperty::Get( KUidSystemCategory, iKey.iUid, value ) );

   126     iObserver.HandleSystemNotifierEventL( iKey, value );

   127     }

   128