voiceui/voiceuivoicerecognition/src/vuiccontextcheckstate.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:46:30 +0200
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/*
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* Copyright (c) 2006 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 <centralrepository.h>
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#include <srsfdomaincrkeys.h>
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#include "vuicstate.h"
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#include "vuiccontextcheckstate.h"
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#include "vuicverificationtrainingstate.h"
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#include "vuictutorialstate.h"
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#include "vuicexitstate.h"
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#include "vuicerrorstate.h"
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#include "vuicdatastorage.h"
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#include "vuicvoicerecogdialogimpl.h"
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#include "rubydebug.h"
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static const TInt KUndefinedLanguage = -1;
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// -----------------------------------------------------------------------------
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// CContextCheckState::NewL
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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CContextCheckState* CContextCheckState::NewL( CDataStorage& aDataStorage, CUiModel& aUiModel )
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    {
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    CContextCheckState* self = new (ELeave) CContextCheckState( aDataStorage, aUiModel );
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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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CContextCheckState::~CContextCheckState()
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    {
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    RUBY_DEBUG0( "CContextCheckState::~CContextCheckState START" );
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    delete iVasDbManager;
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    iContextManager = NULL;
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    iTagManager = NULL;
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    RUBY_DEBUG0( "CContextCheckState::~CContextCheckState EXIT" );
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    }
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// ---------------------------------------------------------
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// CContextCheckState::HandleEventL
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// ---------------------------------------------------------
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//       
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void CContextCheckState::HandleEventL( TInt aEvent )
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    {
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    RUBY_DEBUG_BLOCK( "CContextCheckState::HandleEventL" );
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    CState* nextState = NULL;
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    switch( aEvent )
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        {
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        case KErrNone:
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            if ( iInternalState == EStarted )
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                {
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                iInternalState = ECommandsReady;
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                nextState = this;
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                }
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            else if ( iInternalState == ECommandsReady )
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                {
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                iInternalState = EDialReady;
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                nextState = this;
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                }
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            else if ( iInternalState == EDialReady )
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                {
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                iInternalState = EVerificationReady;
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                nextState = this;
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                }
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            else
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                {
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                nextState = CTutorialState::NewL( DataStorage(), UiModel() );
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                }
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            break;
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        case KErrNoVerificationTrained:
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            nextState = CVerificationTrainingState::NewL( DataStorage(), UiModel() );
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            break;
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        case KErrNotReady:
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            nextState = CExitState::NewL( DataStorage(), UiModel() );
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            break;
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        default:
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            nextState = CErrorState::NewL( DataStorage(), UiModel(), aEvent );
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            break;
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        }
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    DataStorage().VoiceRecognitionImpl()->ChangeState( nextState );
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    }
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// ---------------------------------------------------------
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// CContextCheckState::ExecuteL
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// ---------------------------------------------------------
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//       
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void CContextCheckState::ExecuteL()
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    {
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    RUBY_DEBUG_BLOCK( "CContextCheckState::ExecuteL" );
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    if ( iInternalState == ENotStarted )
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        {
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        iInternalState = EStarted;
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        // Get voice command context
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        if ( iContextManager->GetContext( DataStorage().VoiceRecognitionImpl(),
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                                          KVoiceCommandContext ) != KErrNone )
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            {
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            HandleEventL( KErrNotReady );
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            }
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        }
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    else if ( iInternalState == ECommandsReady )
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        {
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        // Get voice command context tag count
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        iTagCount += iTagManager->TagCount( DataStorage().Context() );
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        // Get voice dial context
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        if ( iContextManager->GetContext( DataStorage().VoiceRecognitionImpl(),
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                                          KVoiceDialContext ) != KErrNone )
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            {
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            HandleEventL( KErrNotReady );
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            }
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        }
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    else if ( iInternalState == EDialReady )
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        {
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        // Get voice dial context tag count
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        iTagCount += iTagManager->TagCount( DataStorage().Context() );
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        // Check if any tags were found
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        if ( !iTagCount )
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            {
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            HandleEventL( KErrNoContacts );
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            }
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        // Get voice verification context
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        if ( iContextManager->GetContext( DataStorage().VoiceRecognitionImpl(),
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                                          KVoiceVerificationContext ) != KErrNone )
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            {
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            HandleEventL( KErrNoVerificationTrained );
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            }
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        }
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    else if ( iInternalState == EVerificationReady )
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        {
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        // Get voice verification context tag count
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        iTagCount = iTagManager->TagCount( DataStorage().Context() );
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        // Check if any tags were found or has UI language changed
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        if ( !iTagCount || LanguageChangedL() )
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            {
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            HandleEventL( KErrNoVerificationTrained );
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            }
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        else
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            {
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            HandleEventL( KErrNone );
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            }
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        }
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    }
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// ---------------------------------------------------------
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// CContextCheckState::CContextCheckState
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// ---------------------------------------------------------
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//              
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CContextCheckState::CContextCheckState( CDataStorage& aDataStorage, CUiModel& aUiModel )
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 : CState( aDataStorage, aUiModel ), iInternalState( ENotStarted ),
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   iTagCount( 0 )
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    {
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    }
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// ---------------------------------------------------------
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// CContextCheckState::ConstructL
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// ---------------------------------------------------------
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//           
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void CContextCheckState::ConstructL()
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    {
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    RUBY_DEBUG_BLOCK( "CContextCheckState::ConstructL" );
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    CState::ConstructL();
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    iVasDbManager = CNssVASDBMgr::NewL();
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    iVasDbManager->InitializeL();
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    iTagManager = iVasDbManager->GetTagMgr();
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    iContextManager = iVasDbManager->GetContextMgr();   
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    }
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// ---------------------------------------------------------
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// CContextCheckState::LanguageChangedL
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// ---------------------------------------------------------
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//           
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TBool CContextCheckState::LanguageChangedL()
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    {
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    RUBY_DEBUG_BLOCK( "CContextCheckState::LanguageChangedL" );
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    TBool changed = EFalse;
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    TInt language = KUndefinedLanguage;
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    CRepository* client = CRepository::NewLC( KCRUidSRSFSettings );
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    client->Get( KSRSFVoiceUiLanguage, language );
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    if ( language != User::Language() )
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        {
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        client->Set( KSRSFVoiceUiLanguage, KUndefinedLanguage );
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        changed = ETrue;
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        }
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    CleanupStack::PopAndDestroy( client );
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    return changed;
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    }
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// End of File
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