locationmapnavfw/library/src/mngeocoder.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 10:12:24 +0200
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permissions -rw-r--r--
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/*
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* Copyright (c) 2005-2006 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:  CMnGeocoder class implementation
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*
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*/
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#include <e32base.h>
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#include <e32math.h>
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#include <AknServerApp.h>
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#include <apaserverapp.h>
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#include <lbsfields.h>
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#include <lbsfieldids.h>
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#include <lbsposition.h>
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#include <EPos_CPosLandmark.h>
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#include "mnprovider.h"
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#include "mngeocodingserviceclient.h"
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#include "mngeocoder.h"
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// ======== LOCAL FUNCTIONS ========
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// ---------------------------------------------------------------------------
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//  Copies address information (address and building position fields) from 
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//  source landmark to target.
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// ---------------------------------------------------------------------------
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//
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void CopyAddressL( CPosLandmark& aSrc, CPosLandmark& aTrg )
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    {
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    // clean address fields (CMnGeocoder says that "all <data> will be updated")
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    for ( TPositionFieldId fieldId = EPositionFieldAddressCapabilitiesBegin + 1;
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          fieldId < EPositionFieldNMEACapabilitiesBegin;
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          fieldId++ )
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        {
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        aTrg.RemovePositionField( fieldId );
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        }
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    // copy fields
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    TPositionFieldId fieldId = aSrc.FirstPositionFieldId();
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    while ( fieldId != EPositionFieldNone )
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        {
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        if ( fieldId > EPositionFieldAddressCapabilitiesBegin &&
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             fieldId < EPositionFieldNMEACapabilitiesBegin)
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            {
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            TPtrC field;
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            if ( KErrNone == aSrc.GetPositionField( fieldId, field ) )
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                {
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                aTrg.SetPositionFieldL( fieldId, field );
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                }
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            }
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        fieldId = aSrc.NextPositionFieldId( fieldId );            
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        }
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    }
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// ---------------------------------------------------------------------------
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//  Copies coordinate information (locality and coverage) from 
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//  source landmark to target. If some fields are empty in source,
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//  they will also be emptied in result.
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// ---------------------------------------------------------------------------
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//
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void CopyCoordinatesL( CPosLandmark& aSrc, CPosLandmark& aTrg )
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    {
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    TLocality loc;
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    aSrc.GetPosition( loc );
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    aTrg.SetPositionL( loc );
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    TRealX nan;
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    nan.SetNaN();
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    TReal32 coverage( nan );
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    aSrc.GetCoverageRadius( coverage );
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    aTrg.SetCoverageRadius( coverage );
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    }
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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CMnGeocoder::CMnGeocoder()
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    {
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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void CMnGeocoder::ConstructCommonL( CMnProvider& aProvider )
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    {
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    if ( !( aProvider.SupportedServices() & CMnProvider::EServiceGeocoding ) )
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        {
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        User::Leave( KErrNotSupported );
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        }
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    iSession = new (ELeave) RMnGeocodingServiceClient;
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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void CMnGeocoder::ConstructNewL( CMnProvider& aProvider )
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    {
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    ConstructCommonL( aProvider );
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    iSession->ConnectL( aProvider.Uid() );
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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void CMnGeocoder::ConstructChainedL( CMnProvider& aProvider )
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    {
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    ConstructCommonL( aProvider );
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    iSession->ConnectChainedL( aProvider.Uid() );
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C CMnGeocoder* CMnGeocoder::NewL( CMnProvider& aProvider )
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    {
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    CMnGeocoder* self = new (ELeave) CMnGeocoder;
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    CleanupStack::PushL( self );
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    self->ConstructNewL( aProvider );
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    CleanupStack::Pop( self );
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    return self;
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C CMnGeocoder* CMnGeocoder::NewChainedL( CMnProvider& aProvider )
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    {
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    CMnGeocoder* self = new (ELeave) CMnGeocoder;
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    CleanupStack::PushL( self );
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    self->ConstructChainedL( aProvider );
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    CleanupStack::Pop( self );
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    return self;
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C CMnGeocoder::~CMnGeocoder()
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    {
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	delete iExitMonitor;
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    if ( iSession )
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        {
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        iSession->Close();
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        delete iSession;
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        }
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C CMnGeocoder::TOptions CMnGeocoder::Options() const
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    {
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    return iOptions;
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C void CMnGeocoder::SetOptions( TOptions aOptions )
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    {
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    iOptions = aOptions;
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    }
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// ---------------------------------------------------------------------------
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//  1. Get result from session in form of landmark
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//  2. If last request was for address, copy all position fields from 
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//     result to target landmark
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//  3. If last request was for coordinate, copy position data.
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// ---------------------------------------------------------------------------
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//
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EXPORT_C void CMnGeocoder::RetrieveGeocodingResultL( CPosLandmark& aTargetLandmark )
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    {
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    CPosLandmark* lm = NULL;
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    TMnGeocodingResultType resultType; 
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    iSession->GetLastResultL( lm, resultType );
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    CleanupStack::PushL( lm );
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   195
    
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    switch ( resultType )
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        {
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        case EMnGeoResultAddress:
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            CopyAddressL( *lm, aTargetLandmark );
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            break;
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   201
        case EMnGeoResultCoordinates:
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            CopyCoordinatesL( *lm, aTargetLandmark );
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            break;
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   204
        }
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   205
    CleanupStack::PopAndDestroy( lm );
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   206
    }
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   207
        
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C void CMnGeocoder::FindCoordinateByAddressL(
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    const CPosLandmark& aLandmark, 
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    TRequestStatus& aRequest)
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    {
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    iSession->CoordinateByAddressL( aLandmark, iOptions, aRequest );
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    }
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   217
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C void CMnGeocoder::FindCoordinateByAddressL(
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    const TDesC& aAddress, 
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    TRequestStatus& aRequest)
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   224
    {
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    iSession->CoordinateByAddressL( aAddress, iOptions, aRequest );
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    }
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   227
            
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C void CMnGeocoder::FindAddressByCoordinateL(
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    const CPosLandmark& aLandmark, 
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    TRequestStatus& aRequest)
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    {
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    iSession->AddressByCoordinateL( aLandmark, iOptions, aRequest );
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C void CMnGeocoder::Cancel()
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    {
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    iSession->Cancel();
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    }
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C void CMnGeocoder::SetExitObserverL( MAknServerAppExitObserver& aObserver )
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	{
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	if ( iExitMonitor )
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		{
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		User::Leave( KErrAlreadyExists );
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		}
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	else
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		{
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		iExitMonitor = CApaServerAppExitMonitor::NewL( 
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			*iSession, aObserver, CActive::EPriorityStandard );
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		}
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	}
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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//
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EXPORT_C void CMnGeocoder::RemoveExitObserver()
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	{
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	delete iExitMonitor;
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	iExitMonitor = NULL;
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	}