/*

* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  RPropery observer 

*

*/

#include <e32base.h>

#include "tmrpropertyobserver.h"

#include "thumbnailmanagerconstants.h"

#include "thumbnaillog.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "tmsrproptertyobserverTraces.h"

#endif

// ---------------------------------------------------------------------------

// CTMRPropertyObserver::NewL()

// ---------------------------------------------------------------------------

//

CTMRPropertyObserver* CTMRPropertyObserver::NewL( MTMRPropertyObserver& aObserver,

                                                const TUid& aKeyCategory,

                                                const TInt aPropertyKey,

                                                TBool aDefineKey)

    { 

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

                                                                  aKeyCategory,

                                                                  aPropertyKey,

                                                                  aDefineKey);

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

// ---------------------------------------------------------------------------

// CTMRPropertyObserver::CTMRPropertyObserver()

// ---------------------------------------------------------------------------

//

CTMRPropertyObserver::CTMRPropertyObserver( MTMRPropertyObserver& aObserver,

                                          const TUid& aKeyCategory,

                                          const TInt aPropertyKey,

                                          TBool aDefineKey)

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

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

    {   

    CActiveScheduler::Add( this );

    }

// ---------------------------------------------------------------------------

// CTMRPropertyObserver::ConstructL()

// ---------------------------------------------------------------------------

//

void CTMRPropertyObserver::ConstructL()

    { 

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

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

    // define P&S property types

    if (iDefineKey)

        {

        RProperty::Define(iKeyCategory,iPropertyKey,

                          RProperty::EInt);

        }

    // attach to the property

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

    User::LeaveIfError(err);

    SetActive();

    TRequestStatus* statusPtr = &iStatus;

    User::RequestComplete( statusPtr, KErrNone );

    }

// ---------------------------------------------------------------------------

// CTMRPropertyObserver::~CTMRPropertyObserver()

// ---------------------------------------------------------------------------

//

CTMRPropertyObserver::~CTMRPropertyObserver()

    {

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

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

    Cancel();

    iProperty.Close();

    }

// ---------------------------------------------------------------------------

// CTMRPropertyObserver::RunL()

// ---------------------------------------------------------------------------

//

void CTMRPropertyObserver::RunL()

    {

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

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

    // resubscribe before processing new value to prevent missing updates

    iProperty.Subscribe(iStatus);

    SetActive();

    // retrieve the value

    TInt value = 0;

    TInt ret = iProperty.Get(value);

    // observer callback

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

    }

// ---------------------------------------------------------------------------

// CTMRPropertyObserver::DoCancel()

// ---------------------------------------------------------------------------

//

void CTMRPropertyObserver::DoCancel()

    {

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

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

    iProperty.Cancel();

    }

// End of file