1 /*

     2 * Copyright (c) 2006-2007 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:  RPropery observer 

    15 *

    16 */

    17 

    18 

    19 #include <e32base.h>

    20 

    21 #include "tmrpropertyobserver.h"

    22 #include "thumbnailmanagerconstants.h"

    23 #include "thumbnaillog.h"

    24 

    25 // ---------------------------------------------------------------------------

    26 // CTMRPropertyObserver::NewL()

    27 // ---------------------------------------------------------------------------

    28 //

    29 CTMRPropertyObserver* CTMRPropertyObserver::NewL( MTMRPropertyObserver& aObserver,

    30                                                 const TUid& aKeyCategory,

    31                                                 const TInt aPropertyKey,

    32                                                 TBool aDefineKey)

    33     { 

    34     CTMRPropertyObserver* self = new( ELeave )CTMRPropertyObserver( aObserver, 

    35                                                                   aKeyCategory,

    36                                                                   aPropertyKey,

    37                                                                   aDefineKey);

    38     CleanupStack::PushL( self );

    39     self->ConstructL();

    40     CleanupStack::Pop( self );

    41     return self;

    42     }

    43 

    44 // ---------------------------------------------------------------------------

    45 // CTMRPropertyObserver::CTMRPropertyObserver()

    46 // ---------------------------------------------------------------------------

    47 //

    48 CTMRPropertyObserver::CTMRPropertyObserver( MTMRPropertyObserver& aObserver,

    49                                           const TUid& aKeyCategory,

    50                                           const TInt aPropertyKey,

    51                                           TBool aDefineKey)

    52     : CActive( CActive::EPriorityStandard ), iObserver( aObserver ),

    53       iKeyCategory( aKeyCategory ), iPropertyKey(aPropertyKey), iDefineKey( aDefineKey )

    54     {   

    55     CActiveScheduler::Add( this );

    56     }

    57 

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

    59 // CTMRPropertyObserver::ConstructL()

    60 // ---------------------------------------------------------------------------

    61 //

    62 void CTMRPropertyObserver::ConstructL()

    63     { 

    64     TN_DEBUG1( "CTMRPropertyObserver::ConstructL()");

    65     // define P&S property types

    66     if (iDefineKey)

    67         {

    68         RProperty::Define(iKeyCategory,iPropertyKey,

    69                           RProperty::EInt);

    70         }

    71     

    72     // attach to the property

    73     TInt err = iProperty.Attach(iKeyCategory,iPropertyKey,EOwnerThread);

    74     User::LeaveIfError(err);

    75     

    76     SetActive();

    77     TRequestStatus* statusPtr = &iStatus;

    78     User::RequestComplete( statusPtr, KErrNone );

    79     }

    80 

    81 // ---------------------------------------------------------------------------

    82 // CTMRPropertyObserver::~CTMRPropertyObserver()

    83 // ---------------------------------------------------------------------------

    84 //

    85 CTMRPropertyObserver::~CTMRPropertyObserver()

    86     {

    87     TN_DEBUG1( "CTMRPropertyObserver::~CTMRPropertyObserver()");

    88     Cancel();

    89     iProperty.Close();

    90     }

    91 

    92 // ---------------------------------------------------------------------------

    93 // CTMRPropertyObserver::RunL()

    94 // ---------------------------------------------------------------------------

    95 //

    96 void CTMRPropertyObserver::RunL()

    97     {

    98     TN_DEBUG1( "CTMRPropertyObserver::RunL()");

    99     // resubscribe before processing new value to prevent missing updates

   100     iProperty.Subscribe(iStatus);

   101     SetActive();

   102     

   103     // retrieve the value

   104     TInt value = 0;

   105     TInt ret = iProperty.Get(value);

   106 

   107     // observer callback

   108     iObserver.RPropertyNotification(ret, iKeyCategory, iPropertyKey, value);

   109     }

   110 

   111 // ---------------------------------------------------------------------------

   112 // CTMRPropertyObserver::DoCancel()

   113 // ---------------------------------------------------------------------------

   114 //

   115 void CTMRPropertyObserver::DoCancel()

   116     {

   117     TN_DEBUG1( "CTMRPropertyObserver::DoCancel()");

   118     iProperty.Cancel();

   119     }

   120 

   121 // End of file