camerauis/cameraapp/generic/src/CamDriveChangeNotifier.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 16:18:56 +0200
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/*
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* Copyright (c) 2008 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    <pathinfo.h>
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#include    "CamDriveChangeNotifier.h"
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#include    "camlogging.h"
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#include    "CamUtility.h"
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::CCamDiskChangeListener::NewL
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// -----------------------------------------------------------------------------
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//
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CCamDriveChangeNotifier::CCamDiskChangeListener* 
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    CCamDriveChangeNotifier::CCamDiskChangeListener::NewLC(
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                  RFs& aFs,
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                  TDriveNumber aDrive,                                         
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                  MCamDriveChangeNotifierObserver::TCamDriveChangeType aType,
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                  CCamDriveChangeNotifier& aObserver )
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  {
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  PRINT( _L( "Camera => CCamDiskChangeListener::NewLC" ) );
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  CCamDiskChangeListener* self = 
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        new( ELeave ) CCamDiskChangeListener( aFs, aDrive, aType, aObserver );
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  CleanupStack::PushL( self );
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  PRINT( _L( "Camera <= CCamDiskChangeListener::NewLC" ) );
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  return self;
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::CCamDiskChangeListener::~CCamDiskChangeListener
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// -----------------------------------------------------------------------------
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//
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CCamDriveChangeNotifier::CCamDiskChangeListener::~CCamDiskChangeListener()
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  {
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  PRINT( _L( "Camera => CCamDiskChangeListener::~CCamDiskChangeListener" ) );
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  Cancel();
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  PRINT( _L( "Camera <= CCamDiskChangeListener::~CCamDiskChangeListener" ) );
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::CCamDiskChangeListener::CCamDiskChangeListener
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// -----------------------------------------------------------------------------
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//
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CCamDriveChangeNotifier::CCamDiskChangeListener::CCamDiskChangeListener(
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                  RFs& aFs,
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                  TDriveNumber aDrive,                                         
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                  MCamDriveChangeNotifierObserver::TCamDriveChangeType aType,
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                  CCamDriveChangeNotifier& aObserver )
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    : CActive( CActive::EPriorityIdle ),
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      iFs( aFs ),
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      iDrive( aDrive ),
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      iType( aType ),
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      iObserver( aObserver )                                          
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  {
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  CActiveScheduler::Add( this );
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::CCamDiskChangeListener::Start
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// -----------------------------------------------------------------------------
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//
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void CCamDriveChangeNotifier::CCamDiskChangeListener::Start()
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  {
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  PRINT( _L( "Camera => CCamDiskChangeListener::Start" ) );
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  if ( !IsActive() )
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    {
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    PRINT( _L( "Camera <> CCamDiskChangeListener::Start SetActive()" ) );
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    // Start listening for change events
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    iFs.NotifyChange( ENotifyDisk, iStatus );
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    SetActive();
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    }
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  PRINT( _L( "Camera <= CCamDiskChangeListener::Start" ) );
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::CCamDiskChangeListener::Stop
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// -----------------------------------------------------------------------------
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//
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void CCamDriveChangeNotifier::CCamDiskChangeListener::Stop()
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  {
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  PRINT( _L( "Camera => CCamDiskChangeListener::Stop" ) );
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  Cancel();
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  PRINT( _L( "Camera <= CCamDiskChangeListener::Stop" ) );
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier:::CCamDiskChangeListener::DoCancel
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// -----------------------------------------------------------------------------
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//
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void CCamDriveChangeNotifier::CCamDiskChangeListener::DoCancel()
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  {
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  PRINT( _L( "Camera => CCamDiskChangeListener::DoCancel" ) );
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  iFs.NotifyChangeCancel();
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  PRINT( _L( "Camera <= CCamDiskChangeListener::DoCancel" ) );
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  }
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   119
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::CCamDiskChangeListener::RunL
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// -----------------------------------------------------------------------------
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//
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void CCamDriveChangeNotifier::CCamDiskChangeListener::RunL()
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  {
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  PRINT2( _L( "Camera => CCamDiskChangeListener::RunL iType: %d, iStatus: %d" ), iType, iStatus.Int() );
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  TInt ret = KErrNone;
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  if ( iStatus == KErrNone )
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    {
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    ret = iObserver.NotifyChangeL( iType );
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    if( ret == KErrNone )
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      {
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      Start();
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      }
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    }
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  else if ( iStatus == KErrNotReady )
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    {
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    // Give other threads chance to run	
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    User::After( 0 );	
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    Start();
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    }	
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  PRINT( _L( "Camera <= CCamDiskChangeListener::RunL" ) );
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::CCamDriveChangeNotifier
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// -----------------------------------------------------------------------------
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//
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CCamDriveChangeNotifier::CCamDriveChangeNotifier(
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                                    RFs& aFs,
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                                    MCamDriveChangeNotifierObserver& aObserver )
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    : iObserver( aObserver ),
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      iFs( aFs )
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  {
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::NewL
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// -----------------------------------------------------------------------------
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//
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CCamDriveChangeNotifier* CCamDriveChangeNotifier::NewL(
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                                  RFs& aFs,
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                                  MCamDriveChangeNotifierObserver& aObserver )
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  {
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  PRINT( _L( "Camera => CCamDriveChangeNotifier::NewL" ) );
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   169
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  CCamDriveChangeNotifier* self =
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                      new( ELeave ) CCamDriveChangeNotifier( aFs, aObserver );
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  self->iListeners.AppendL( CCamDiskChangeListener::NewLC( self->iFs, EDriveE, 
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                      MCamDriveChangeNotifierObserver::EDriveMount, *self ) );
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  self->iListeners.AppendL( CCamDiskChangeListener::NewLC( self->iFs, EDriveD, 
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                      MCamDriveChangeNotifierObserver::EDriveMount, *self ) );
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  CleanupStack::Pop(); // listener
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  CleanupStack::Pop(); // listener 2
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  self->StartMonitoring();
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  PRINT( _L( "Camera <= CCamDriveChangeNotifier::NewL" ) );
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  return self;
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  }
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// Destructor
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CCamDriveChangeNotifier::~CCamDriveChangeNotifier()
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  {
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  PRINT( _L( "Camera => CCamDriveChangeNotifier::~CCamDriveChangeNotifier" ) );
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  CancelMonitoring();
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  iListeners.ResetAndDestroy();
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  PRINT( _L( "Camera <= CCamDriveChangeNotifier::~CCamDriveChangeNotifier" ) );
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::StartMonitoring
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// -----------------------------------------------------------------------------
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//
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void CCamDriveChangeNotifier::StartMonitoring()
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  {
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  PRINT( _L( "Camera => CCamDriveChangeNotifier::StartMonitoring" ) );
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   205
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  for ( TInt i = iListeners.Count(); --i >= 0; )
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    {
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    iListeners[i]->Start();
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    }
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  PRINT( _L( "Camera <= CCamDriveChangeNotifier::StartMonitoring" ) );
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  }
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   213
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::CancelMonitoring
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// -----------------------------------------------------------------------------
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//
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void CCamDriveChangeNotifier::CancelMonitoring()
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  {
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  PRINT( _L( "Camera => CCamDriveChangeNotifier::CancelMonitoring" ) );
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   221
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  for ( TInt i = iListeners.Count(); --i >= 0; )
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    {
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    iListeners[i]->Stop();
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    }
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  PRINT( _L( "Camera <= CCamDriveChangeNotifier::CancelMonitoring" ) );
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::NotifyChangeL
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// -----------------------------------------------------------------------------
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//
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TInt CCamDriveChangeNotifier::NotifyChangeL( 
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                  MCamDriveChangeNotifierObserver::TCamDriveChangeType aType )
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  {
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  PRINT( _L( "Camera => CCamDriveChangeNotifier::NotifyChangeL" ) );
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  TInt ret = iObserver.DriveChangeL( aType );
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  if ( ret == KErrNone && aType == 
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                            MCamDriveChangeNotifierObserver::EDriveDismount )
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    {
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    PRINT( _L("Camera <> iFs.AllowDismount( EDriveE )") )
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    iFs.AllowDismount( EDriveE );
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    PRINT( _L("Camera <> iFs.AllowDismount( EDriveD )") )
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    iFs.AllowDismount( EDriveD );
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    }
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  PRINT( _L( "Camera <= CCamDriveChangeNotifier::NotifyChangeL" ) );        
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  return ret;
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  }
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// -----------------------------------------------------------------------------
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// CCamDriveChangeNotifier::SendAllowDismount
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// -----------------------------------------------------------------------------
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//
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void CCamDriveChangeNotifier::SendAllowDismount()
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  {
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  PRINT( _L( "Camera => CCamDriveChangeNotifier::SendAllowDismount" ) );
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  iFs.AllowDismount( EDriveE );
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  iFs.AllowDismount( EDriveD );
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  StartMonitoring();
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  PRINT( _L( "Camera <= CCamDriveChangeNotifier::SendAllowDismount" ) );
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  }    
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//  End of File