/*

* Copyright (c) 2002 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:    Methods for Landmark editor number field.

*

*/

// INCLUDE FILES

#include "CLmkEditorNumberField.h"

#include "MLmkEditorUiBuilder.h"

#include "LmkConsts.h"

#include "landmarks.hrh"

#include <eikcapc.h>

#include <e32math.h>

#include <aknuniteditor.h>

#include <barsread.h>

#include <lmkui.rsg>

#include "clmkcentralrepository.h"

#include <locnotprefplugindomaincrkeys.h>

#include <centralrepository.h>

#include <CLmkEditorDlg.h>

//================== CONSTANTS===============================

const TReal KFootToMeterFraction = 0.3048;

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

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

// CLmkEditorNumberField::CLmkEditorNumberField

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

//

CLmkEditorNumberField::CLmkEditorNumberField

        ( MLmkFieldData& aField,

		  MLmkEditorUiBuilder& aUiBuilder ) :

    CLmkEditorFieldBase( aField, aUiBuilder )

    {

    }

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

// CLmkEditorNumberField::ConstructL

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

//

void CLmkEditorNumberField::ConstructL()

    {

    iRepository = CLmkCentralRepository::NewL();

    CreateAvkonUnitEditorL();

    iCaptionedCtrl = iUiBuilder.LineControl( ControlId() );

    iCaptionedCtrl->SetTakesEnterKey( ETrue );

    }

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

// CLmkEditorNumberField::NewL

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

//

CLmkEditorNumberField* CLmkEditorNumberField::NewL

        ( MLmkFieldData& aField,

		 MLmkEditorUiBuilder& aUiBuilder )

    {

    CLmkEditorNumberField* self =

        new(ELeave) CLmkEditorNumberField( aField, aUiBuilder );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// CLmkEditorNumberField::~CLmkEditorNumberField

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

//

CLmkEditorNumberField::~CLmkEditorNumberField()

    {

    delete iRepository;

    }

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

// CLmkEditorNumberField::SaveFieldL

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

//

TBool CLmkEditorNumberField::SaveFieldL()

    {

    TBool result = EFalse;

	TReal32 oldData = LandmarkItemField().FloatData();

	TReal32 currData = iControl->Value();

	if( oldData != currData)

        {

        if (!IsSystemUnitMetric())

            {

            if (LandmarkItemField().FieldType() == EPositionAccuracy

                    || LandmarkItemField().FieldType() == EAltitudeAccuracy)

                {

                if (currData < (KMinAccuracy / KFootToMeterFraction))

                    {

                    currData = (KMinAccuracy / KFootToMeterFraction);

                    }

                else if (currData > (KMaxAccuracy / KFootToMeterFraction))

                    {

                    currData = (KMaxAccuracy / KFootToMeterFraction);

                    }

                }

            else if (LandmarkItemField().FieldType() == EAltitude)

                {

                if (currData < (KMinAltitude / KFootToMeterFraction))

                    {

                    currData = (KMinAltitude / KFootToMeterFraction);

                    }

                else if (currData > (KMaxAltitude / KFootToMeterFraction))

                    {

                    currData = (KMaxAltitude / KFootToMeterFraction);

                    }

                }

            ConvertFromFootToMeters(currData);

            }

        else

            {

            if (LandmarkItemField().FieldType() == EPositionAccuracy

                    || LandmarkItemField().FieldType() == EAltitudeAccuracy)

                {

                if (currData < KMinAccuracy)

                    {

                    currData = KMinAccuracy;

                    }

                else if (currData > KMaxAccuracy)

                    {

                    currData = KMaxAccuracy;

                    }

                }

            else if (LandmarkItemField().FieldType() == EAltitude)

                {

                if (currData < KMinAltitude)

                    {

                    currData = KMinAltitude;

                    }

                else if (currData > KMaxAltitude)

                    {

                    currData = KMaxAltitude;

                    }

                }

            }

        LandmarkItemField().SetTReal(currData);

        result = ETrue;

        }

   	return result;

    }

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

// CLmkEditorNumberField::ActivateL

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

//

void CLmkEditorNumberField::ActivateL()

    {

    iCaptionedCtrl->ActivateL();

    }

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

// CLmkEditorNumberField::UpdateL

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

//

void CLmkEditorNumberField::UpdateL()

    {

    TReal32 fieldData = LandmarkItemField().FloatData();

    TReal32 dispData = fieldData;

    if( fieldData == iDbData)

	    {

	    dispData = 	iConvertedData;

	    }

	else

		{

		if( !IsSystemUnitMetric())

			{

			//Imperial

			iDbData = fieldData;

			ConvertFromMetersToFoot( fieldData);

			iConvertedData = fieldData;

			dispData = 	iConvertedData;

			}

		}

	ResolveUnitL();

    iControl->SetValue( dispData );

    }

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

// CLmkEditorNumberField::CreateAvkonUnitEditorL

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

//

void CLmkEditorNumberField::CreateAvkonUnitEditorL()

	{

	// Create Distance editor using AVKON's unit editor

	// and insert a line in the dialog

	iControl = static_cast<CAknUnitEditor*>( iUiBuilder.CreateLineL(

            FieldLabel(), LandmarkItemField().UniqueFieldIdentity(),

            EAknCtUnitEditor ) );

	// Obtain the current system of measurement

	TInt sysOfMeasurement = EAknUnitEditorMeter;

	if( !IsSystemUnitMetric())

		{

		sysOfMeasurement = EAknUnitEditorFoot;

		}

	//read control from resource file.

	TResourceReader reader;

	if( sysOfMeasurement == EAknUnitEditorMeter)

		{

		iEnv->CreateResourceReaderLC(reader, R_LMK_UNIT_EDITOR_METRIC);

		}

	else

		{

		iEnv->CreateResourceReaderLC(reader, R_LMK_UNIT_EDITOR_IMPERIAL);

		}

	iControl->ConstructFromResourceL(reader);

	CleanupStack::PopAndDestroy(); //reader

	ResolveUnitL();

    /*

     if ( LandmarkItemField().FieldType() == EPositionAccuracy ||

     LandmarkItemField().FieldType() == EAltitudeAccuracy )

     {

     if( EAknUnitEditorMeter == sysOfMeasurement )

     {

     iControl->SetMinimumAndMaximum(KMinAccuracy, KMaxAccuracy);

     }

     else

     {

     iControl->SetMinimumAndMaximum( KMinAccuracy / KFootToMeterFraction,

     KMaxAccuracy / KFootToMeterFraction );

     }

     }

     else if ( LandmarkItemField().FieldType() == EAltitude )

     {

     if( EAknUnitEditorMeter == sysOfMeasurement )

     {

     iControl->SetMinimumAndMaximum( KMinAltitude, KMaxAltitude );

     }

     else

     {

     iControl->SetMinimumAndMaximum( KMinAltitude / KFootToMeterFraction,

     KMaxAltitude / KFootToMeterFraction );

     }

     }

     */

    TReal32 fieldData = LandmarkItemField().FloatData();

    iDbData = fieldData;

    iConvertedData = fieldData;

	if( EAknUnitEditorFoot == sysOfMeasurement )

		{

		//Imperial

		ConvertFromMetersToFoot( fieldData);

		iConvertedData = fieldData;

		}

	iControl->SetValue(iConvertedData);

	}

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

//CLmkEditorNumberField::FieldValue()

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

//

TReal CLmkEditorNumberField::FieldValue() const

	{

	return iControl->Value();

	}

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

//CLmkEditorNumberField::ResolveUnitL()

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

//

void CLmkEditorNumberField::ResolveUnitL()

	{

    TReal fieldData = LandmarkItemField().FloatData();

    if( IsSystemUnitMetric())

		{

		TInt fieldUnit = EAknUnitEditorMeter;

		iControl->SetUnitL( fieldUnit );

		}

	else

		{

		TInt fieldUnit = EAknUnitEditorFoot;

		iControl->SetUnitL( fieldUnit );

		}

	}

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

//CLmkEditorNumberField::ConvertFromFootToMeters()

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

//

void CLmkEditorNumberField::ConvertFromFootToMeters(TReal32& aValue)

	{

	aValue *= KFootToMeterFraction;

	}

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

//CLmkEditorNumberField::ConvertFromMetersToFoot()

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

//

void CLmkEditorNumberField::ConvertFromMetersToFoot(TReal32& aValue)

	{

	aValue /= KFootToMeterFraction;

	}

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

//CLmkEditorNumberField::IsSystemUnitMetric()

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

//

TBool CLmkEditorNumberField::IsSystemUnitMetric()

	{

	TBool result = EFalse;

	TInt keyValue;

	TInt err = iRepository->GetKeyValue( KLocSystemofMeasurements, keyValue );

	if( keyValue == EUnitsMetric )

		{

		result = ETrue;

		}

	return result;

	}

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

//CLmkEditorNumberField::HandleUnitChangeL()

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

//

void CLmkEditorNumberField::HandleUnitChangeL()

	{

	// Obtain the current system of measurement

	TInt sysOfMeasurement = EAknUnitEditorMeter;

	if( !IsSystemUnitMetric())

		{

		sysOfMeasurement = EAknUnitEditorFoot;

		}

	TReal32 controlData = iControl->Value();

	if( controlData != iConvertedData)

		{

		iConvertedData = controlData;

		}

    if( EAknUnitEditorMeter == sysOfMeasurement )

	    {

	    //Imperial to metric

	    ConvertFromFootToMeters( iConvertedData );

	    }

	else

		{

		//metric to imperial

		ConvertFromMetersToFoot( iConvertedData );

		}

    if ( LandmarkItemField().FieldType() == EPositionAccuracy ||

    	 LandmarkItemField().FieldType() == EAltitudeAccuracy )

        {

        if( EAknUnitEditorMeter == sysOfMeasurement )

        	{

        	iControl->SetMinimumAndMaximum(KMinAccuracy, KMaxAccuracy);

        	}

		else

			{

			iControl->SetMinimumAndMaximum( KMinAccuracy / KFootToMeterFraction,

							 			    KMaxAccuracy / KFootToMeterFraction );

			}

        }

    else if ( LandmarkItemField().FieldType() == EAltitude )

        {

        if( EAknUnitEditorMeter == sysOfMeasurement )

        	{

        	iControl->SetMinimumAndMaximum( KMinAltitude, KMaxAltitude );

        	}

		else

			{

        	iControl->SetMinimumAndMaximum( KMinAltitude / KFootToMeterFraction,

        									KMaxAltitude / KFootToMeterFraction );

			}

        }

	ResolveUnitL();

    iControl->SetValue( iConvertedData );

	}

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

//CLmkEditorFieldBase::ResetL()

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

//

void CLmkEditorNumberField::ResetL()

	{

	TRealX temp;

    temp.SetNaN();

    iControl->SetValue(temp);

	}

// End of File