/*

* Copyright (c) 2006 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:  CMnrpGeocodingService class implementation

*

*/

#include <e32base.h>

#include <aknnotewrappers.h>

#include <lbsposition.h>

#include <epos_cposlandmark.h>

#include <epos_poslandmarkserialization.h>

#include <mngeocodingservicebase.h>

#include "debug.h"

#include "mnrpappserverback.h"

#include "mnrpappuiback.h"

#include "mnrpdocumentback.h"

#include "mnrpengine.h"

#include <mnrefproviderback.rsg>

#include "mnrpgeocodingservice.h"

// ======== LOCAL FUNCTIONS ========

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

//  Cleanup item for RPointerArray<CPosLandmark>

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

//

void CleanupLandmarksArray( TAny* aArray )

    {

    ( static_cast<RPointerArray<CPosLandmark>*>( aArray ) )->ResetAndDestroy();

    }

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

//  Cleanup item for moving application fore/background

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

//

void CleanupForeground( TAny* aAppUi )

    {

    ( static_cast<CMnrpAppUiBack*>( aAppUi ) )->MoveBackground();

    }

// ======== MEMBER FUNCTIONS ========

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

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

//

CMnrpGeocodingService::CMnrpGeocodingService( CMnrpEngine& aEngine )

 :  iEngine( aEngine )

    {

    }

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

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

//

CMnrpGeocodingService* CMnrpGeocodingService::NewL( CMnrpEngine& aEngine )

    {

    CMnrpGeocodingService* self = new (ELeave) CMnrpGeocodingService( aEngine );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

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

//

CMnrpGeocodingService::~CMnrpGeocodingService()

    {

    delete iProcessor;

    delete iLandmark;

    delete iPlainAddress;

    }

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

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

//

void CMnrpGeocodingService::ConstructL()

    {

    BaseConstructL();

    iProcessor = CIdle::NewL( CActive::EPriorityIdle );

    }

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

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

//

void CMnrpGeocodingService::LeaveIfBusyL()

    {

    if ( iProcessor->IsActive() )

        {

        User::Leave( KErrInUse );

        }

    }

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

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

//

void CMnrpGeocodingService::StartProcessingL()

    {

    iProcessor->Start( TCallBack( CMnrpGeocodingService::GeocodingProcessingCallBack, this ) );

    }

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

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

//

TInt CMnrpGeocodingService::GeocodingProcessingCallBack( TAny* aPtr )

    {

    CMnrpGeocodingService* self =    

        static_cast<CMnrpGeocodingService*> ( aPtr );

    self->HandleGeocodingCompleted();

    return EFalse;

    }

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

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

//

void CMnrpGeocodingService::HandleGeocodingCompleted()

    {

    TInt err = KErrNone;

    TRAP( err, FinishProcessingL() );

    if ( err )

        {

        CompleteRequest( err );

        }

    }

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

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

//

void CMnrpGeocodingService::FinishProcessingL()

    {

    LOG1("MnRefProvider: FinishProcessingL in, cursvc %d", iCurrentService);

    TLocality loc;

    CPosLandmark* lm = NULL;

    switch ( iCurrentService )

        {

        case ECoordToAddr:

            if ( iDialogAllowed )

                {

                lm = LetUserSelectBestMatchL( *iLandmark );

                CleanupStack::PushL( lm );

                }

            else

                {

                // search and return just best match - closest POI

                if ( iLandmark->GetPosition( loc ) != KErrNone )

                    {

                    User::Leave( KErrArgument );

                    }

                lm = iEngine.CoordToAddressLC( loc );

                }

            break;

        case EAddrToCoord:

            lm = iEngine.AddressToCoordLC( *iLandmark );

            break;

        case EPlainToCoord:

            lm = iEngine.AddressToCoordLC( *iPlainAddress );

            break;

        default:            

            User::Leave( KErrGeneral );

        }

    iCurrentService = ENone;    

    CompleteGeocodingRequestL( *lm );

    CleanupStack::PopAndDestroy( lm );

    LOG("MnRefProvider: FinishProcessingL out");

    }

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

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

//

CPosLandmark* CMnrpGeocodingService::LetUserSelectBestMatchL( const CPosLandmark& aReference )

    {

    // 1. Find best matches

    RPointerArray<CPosLandmark> matches;

    CleanupStack::PushL( TCleanupItem( CleanupLandmarksArray, &matches ) );

    TLocality location;

    if ( aReference.GetPosition( location ) != KErrNone )

        {

        User::Leave( KErrArgument );

        }

    const TInt KMaxmMatches = 3;

    iEngine.BestCoordToAddressMatchesL( location, matches, KMaxmMatches );

    if ( matches.Count() < 1 )

        {

        User::Leave( KErrNotFound ); // cannot find any match

        }

    // 2. Start selection dialog

    TInt result = 1, selected = 0;

    if ( matches.Count() > 1 )

        {

        // prepare dialog

        const TInt KGranularity = 8;

        CDesCArraySeg *textArray = new (ELeave) CDesCArraySeg( KGranularity );

        CleanupStack::PushL( textArray );

        for ( TInt i = 0; i < matches.Count(); i++ )

            {

            HBufC* buf = HBufC::NewLC( KPosLmMaxTextFieldLength );

            TPtrC ptr( buf->Des() );

            matches[i]->GetPositionField( EPositionFieldLocationName, ptr );

            textArray->AppendL( ptr );

            CleanupStack::PopAndDestroy( buf );

            }

        // bring application foreground

        CMnrpAppUiBack* ui = (CMnrpAppUiBack*) CEikonEnv::Static()->AppUi();

        CleanupStack::PushL( TCleanupItem( CleanupForeground, ui ) );

        ui->MoveForeground();

        CAknListQueryDialog* dialog = new (ELeave) CAknListQueryDialog( &selected );

        dialog->PrepareLC( R_MNREFGEOCODER_LIST_QUERY );

        dialog->SetItemTextArray( textArray );

        dialog->SetOwnershipType( ELbmOwnsItemArray );

        // pop up dialog

        result = dialog->RunLD();

        CleanupStack::PopAndDestroy(); // move background

        CleanupStack::Pop( textArray );

        }

    // 3. Return result

    CPosLandmark* lm = NULL;

    if ( result )

        {

        lm = matches[selected];

        matches.Remove( selected );

        }

    else

        {

        User::Leave( KErrCancel ); 

        // user cancelled geocoding selection dialog

        // it automatically cancels geocoding request

        }

    CleanupStack::PopAndDestroy(); // matches

    return lm;

    }

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

// From class CMnGeocodingServiceBase

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

//

void CMnrpGeocodingService::HandleFindAddressByCoordinateL(

    const CPosLandmark& aLandmark)

    {

    LeaveIfBusyL();

    delete iLandmark;

    iLandmark = NULL;

    iLandmark = CPosLandmark::NewL(aLandmark);

    iCurrentService = ECoordToAddr;

    iDialogAllowed = !( Options() & CMnGeocoder::EOptionDialogDisabled );

    StartProcessingL();

    }

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

// From class CMnGeocodingServiceBase

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

//

void CMnrpGeocodingService::HandleFindCoordinateByAddressL(

    const CPosLandmark& aLandmark)

    {

    LeaveIfBusyL();

    delete iLandmark;

    iLandmark = NULL;

    iLandmark = CPosLandmark::NewL( aLandmark );

    iCurrentService = EAddrToCoord;

    iDialogAllowed = !( Options() & CMnGeocoder::EOptionDialogDisabled );

    StartProcessingL();

    }

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

// From class CMnGeocodingServiceBase

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

//

void CMnrpGeocodingService::HandleFindCoordinateByAddressL(

    const TDesC& aAddress)

    {

    LeaveIfBusyL();

    delete iPlainAddress;

    iPlainAddress = NULL;

    iPlainAddress = aAddress.AllocL();

    delete iLandmark;

    iLandmark = NULL;

    iLandmark = CPosLandmark::NewL();

    iCurrentService = EPlainToCoord;

    iDialogAllowed = !( Options() & CMnGeocoder::EOptionDialogDisabled );

    StartProcessingL();

    }

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

// From class CMnServiceBase

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

//

void CMnrpGeocodingService::DoCancel()

    {

    iProcessor->Cancel();

    iCurrentService = ENone;

    }