devencdiskutils/DevEncStarter/src/DevEncStarterPropertyObserver.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 26 Jan 2010 15:20:08 +0200
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/*
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* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  
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*
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*/
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// INCLUDE FILES
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#include "DevEncStarterPropertyObserver.h"
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// CDevEncStarterPropertyObserver::CPropertyObserver
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// C++ default constructor can NOT contain any code, that
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// might leave.
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// -----------------------------------------------------------------------------
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//
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CDevEncStarterPropertyObserver::CDevEncStarterPropertyObserver(
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                               MDevEncStarterPropertyChangeObserver& aObserver,
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                               const TUid& aCategory,
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                               const TUint aKey )
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    : CActive( CActive::EPriorityStandard ),
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    iObserver( aObserver ),
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    iCategory( aCategory ),
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    iKey( aKey )
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    {
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    }
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// -----------------------------------------------------------------------------
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// CDevEncStarterPropertyObserver::ConstructL
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// Symbian 2nd phase constructor can leave.
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// -----------------------------------------------------------------------------
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//
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void CDevEncStarterPropertyObserver::ConstructL()
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    {
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    User::LeaveIfError( iProperty.Attach( iCategory, iKey ) );
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    CActiveScheduler::Add( this );
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    iProperty.Subscribe( iStatus );
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    SetActive();
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    }
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// -----------------------------------------------------------------------------
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// CDevEncStarterPropertyObserver::NewL
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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CDevEncStarterPropertyObserver* CDevEncStarterPropertyObserver::NewL(
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                               MDevEncStarterPropertyChangeObserver& aObserver,
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                               const TUid& aCategory,
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                               const TUint aKey )
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    {
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    CDevEncStarterPropertyObserver* self =
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        new ( ELeave ) CDevEncStarterPropertyObserver( aObserver, aCategory, aKey );
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    CleanupStack::PushL( self );
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    self->ConstructL();
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    CleanupStack::Pop( self );
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    return self;
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    }
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// Destructor
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CDevEncStarterPropertyObserver::~CDevEncStarterPropertyObserver()
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    {
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    Cancel();
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    iProperty.Close();
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    }
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// -----------------------------------------------------------------------------
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// CDevEncStarterPropertyObserver::RunL
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//
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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void CDevEncStarterPropertyObserver::RunL()
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    {
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    iProperty.Subscribe( iStatus );
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    SetActive();
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    TInt err = iProperty.Get( iValue );
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    if ( err )
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        {
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        iObserver.HandlePropertyChangeErrorL( iCategory, iKey, err );
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        }
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    else
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        {
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        iObserver.HandlePropertyChangeL( iCategory, iKey, iValue );
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        }
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    }
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// -----------------------------------------------------------------------------
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// CDevEncStarterPropertyObserver::DoCancel
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// Cancels an outstanding active request
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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void CDevEncStarterPropertyObserver::DoCancel()
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    {
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    iProperty.Cancel();
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    }
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// -----------------------------------------------------------------------------
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// CDevEncStarterPropertyObserver::GetValue
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// Returns KErrNone if operation was successful
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// Actual value is written to aValue
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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void CDevEncStarterPropertyObserver::GetValue( TInt& aValue ) const
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    {
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    aValue = iValue;
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    }
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// End of File