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 #include "OstTraceDefinitions.h"

    25 #ifdef OST_TRACE_COMPILER_IN_USE

    26 #include "tmsrproptertyobserverTraces.h"

    27 #endif

    28 

    29 

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

    31 // CTMRPropertyObserver::NewL()

    32 // ---------------------------------------------------------------------------

    33 //

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

    35                                                 const TUid& aKeyCategory,

    36                                                 const TInt aPropertyKey,

    37                                                 TBool aDefineKey)

    38     { 

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

    40                                                                   aKeyCategory,

    41                                                                   aPropertyKey,

    42                                                                   aDefineKey);

    43     CleanupStack::PushL( self );

    44     self->ConstructL();

    45     CleanupStack::Pop( self );

    46     return self;

    47     }

    48 

    49 // ---------------------------------------------------------------------------

    50 // CTMRPropertyObserver::CTMRPropertyObserver()

    51 // ---------------------------------------------------------------------------

    52 //

    53 CTMRPropertyObserver::CTMRPropertyObserver( MTMRPropertyObserver& aObserver,

    54                                           const TUid& aKeyCategory,

    55                                           const TInt aPropertyKey,

    56                                           TBool aDefineKey)

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

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

    59     {   

    60     CActiveScheduler::Add( this );

    61     }

    62 

    63 // ---------------------------------------------------------------------------

    64 // CTMRPropertyObserver::ConstructL()

    65 // ---------------------------------------------------------------------------

    66 //

    67 void CTMRPropertyObserver::ConstructL()

    68     { 

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

    70     OstTrace0( TRACE_NORMAL, CTMRPROPERTYOBSERVER_CONSTRUCTL, "CTMRPropertyObserver::ConstructL" );

    71     // define P&S property types

    72     if (iDefineKey)

    73         {

    74         RProperty::Define(iKeyCategory,iPropertyKey,

    75                           RProperty::EInt);

    76         }

    77     

    78     // attach to the property

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

    80     User::LeaveIfError(err);

    81     

    82     SetActive();

    83     TRequestStatus* statusPtr = &iStatus;

    84     User::RequestComplete( statusPtr, KErrNone );

    85     }

    86 

    87 // ---------------------------------------------------------------------------

    88 // CTMRPropertyObserver::~CTMRPropertyObserver()

    89 // ---------------------------------------------------------------------------

    90 //

    91 CTMRPropertyObserver::~CTMRPropertyObserver()

    92     {

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

    94     OstTrace0( TRACE_NORMAL, CTMRPROPERTYOBSERVER_CTMRPROPERTYOBSERVER, "CTMRPropertyObserver::~CTMRPropertyObserver" );

    95     Cancel();

    96     iProperty.Close();

    97     }

    98 

    99 // ---------------------------------------------------------------------------

   100 // CTMRPropertyObserver::RunL()

   101 // ---------------------------------------------------------------------------

   102 //

   103 void CTMRPropertyObserver::RunL()

   104     {

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

   106     OstTrace0( TRACE_NORMAL, CTMRPROPERTYOBSERVER_RUNL, "CTMRPropertyObserver::RunL" );

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

   108     iProperty.Subscribe(iStatus);

   109     SetActive();

   110     

   111     // retrieve the value

   112     TInt value = 0;

   113     TInt ret = iProperty.Get(value);

   114 

   115     // observer callback

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

   117     }

   118 

   119 // ---------------------------------------------------------------------------

   120 // CTMRPropertyObserver::DoCancel()

   121 // ---------------------------------------------------------------------------

   122 //

   123 void CTMRPropertyObserver::DoCancel()

   124     {

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

   126     OstTrace0( TRACE_NORMAL, CTMRPROPERTYOBSERVER_DOCANCEL, "CTMRPropertyObserver::DoCancel" );

   127     iProperty.Cancel();

   128     }

   129 

   130 // End of file