/*

* 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:  

*      This is the implementation of the class defined in CCnvRatesForm.h

*

*/

#include <eikcapc.h>

#include <eikfpne.h>

#include <AknQueryDialog.h>

#include <aknnotewrappers.h>

#include <akntitle.h>

#include <StringLoader.h>

#include <featmgr.h>

#include <eikmenup.h>

#include <TCnvCategory.h>

#include "CCnvRatesForm.h"

#include "CCnvApplication.h"

#include <csxhelp/cnv.hlp.hrh>

#include <Converter.rsg>

#include "Converter.hrh"

#include <e32math.h> //Header to be included for getting CEikEdwin Text to a number

//CONSTANTS for Max Number of Added Currency

const TInt KMaxNumberAddCurrency = 40;

CCnvRatesForm::CCnvRatesForm( TBool* aWantsRelaunch, TBool* aShouldExit,

							 TBool* aModelChanged, TCnvCategory& aCategory ) 

							 : iWantsRelaunch( aWantsRelaunch ), iShouldExit( aShouldExit ),

							 iModelChanged( aModelChanged ), iCategory( aCategory ),

							 iLastUsedEditorId(-1)

	{

	}

CCnvRatesForm::CCnvRatesForm()

	{

	//Member variable set to False in the Constructor

	iEKeyOk = EFalse;

	}

CCnvRatesForm::~CCnvRatesForm()

	{

	iFormIdMapArray.Close();

	iFormIdEdwinMapArray.Close();

	SetDefaultTitle();

	}

void CCnvRatesForm::ConstructL()

	{

	// Use base class to construct menubar

	CAknDialog::ConstructL( R_CNV_RATESFORM_MENUBAR );

    iCategory.CreateTempUnitArrayForRestore();

    iCategory.GetDefaultUnits( iSrcUnitIndexForRestore , iDesUnitIndexForRestore );	

     iHistoryBaseUnit = iCategory.BaseUnit();

	}

void CCnvRatesForm::GetHelpContext( TCoeHelpContext& aContext ) const

	{

	aContext.iMajor = KUidCnv;

	aContext.iContext = KCNV_HLP_RATES;

	}

void CCnvRatesForm::ProcessCommandL( TInt aCommandId )

	{

	// Base class handles EAknFormCmdSave among the other things

	CAknForm::ProcessCommandL( aCommandId );

	switch ( aCommandId )

		{

		case ECmdAddCurrency:

			{			

			AddNewCurrencyL();

			break;

			} 

		case ECmdDeleteCurrency:

			{

			DeleteCurrencyL();

			break;

			}

		case ECmdChangeCurrencyName:

			{

			CmdChangeCurrencyNameL();

			break;

			}

		case ECmdSetAsBaseCurrency:

			{

			CmdSetAsBaseCurrencyL();

			break;

			}

		case EAknCmdHelp:

			{

			iEikonEnv->EikAppUi()->HandleCommandL( EAknCmdHelp );

			break;

			}

		case EEikCmdExit:

			{

			*iShouldExit = ETrue;

			TryExitL( EAknSoftkeyBack );

			break;

			}

		default:

			{

			break;

			}

		}

	}

// Takes any action required when the current line is changed to aControlId.

void CCnvRatesForm::LineChangedL( TInt aControlId )

	{

	CEikFloatingPointEditor* editor =

		static_cast< CEikFloatingPointEditor* >( Control( aControlId ) );

	//editor->ClearSelectionL();

    editor->SetCursorPosL( editor->Text()->DocumentLength(), ETrue );

    if ( iLastUsedEditorId > 0 )

        {

        editor =static_cast<CEikFloatingPointEditor*> ( Control( iLastUsedEditorId ) );  

        TBuf<KEditorTextMaxLength> editorText;

        editor->GetText( editorText );

        // Use local value for different area

        TBuf<1> localeZero;

        localeZero.AppendNum( 0 );

        AknTextUtils::LanguageSpecificNumberConversion( localeZero ); 

        if ( editorText.Length() > 1 && editorText[0] == localeZero[0] )

            {

            // remove all leading zeroes

            while ( editorText.Length() > 0 && editorText[0] == localeZero[0] )

                {

                editorText.Delete( 0, 1 );

                }

            // if too many zeroes removed, insert one.

            TLocale locale;

            if ( editorText.Length() == 0 ||

                TChar( editorText[0] ) == locale.DecimalSeparator() )

                {

                editorText.Insert( 0, localeZero );

                }

            editor->SetTextL( &editorText );

            editor->DrawDeferred();

            }

        }

    iLastUsedEditorId = aControlId;

	}

void CCnvRatesForm::DoNotSaveFormDataL()

	{

	iCategory.RestoreUnitArray();

	iCategory.SetDefaultUnits( iSrcUnitIndexForRestore , iDesUnitIndexForRestore );

	iCategory.SetBaseUnit( iHistoryBaseUnit );

	}

// Saves values from form fields back to the model

TBool CCnvRatesForm::SaveFormDataL()

	{

	SetEditableL( ETrue );

	const MDesCArray* names = iCategory.MdcArray();

	TInt len( names->MdcaCount() );

	TInt formIdIndex = 0;

	for( TInt i = 0; i < len; i ++ )

		{

		if( i != iCategory.BaseUnit() )

			{

			TInt formId = iFormIdMapArray[formIdIndex];

			//A seperate formIdIndex is maintained for the form as iFormIdMapArray

			//does not have an index for Base Unit

			formIdIndex++;

			TReal value = 0; //Contains the value of the editor

			if(KErrNotFound != iFormIdEdwinMapArray.Find(formId))

				{

				TBuf<32> edText;

				GetEdwinText( edText, formId );				

				TInt64 power = 1;

				TBool fraction = EFalse;

				TChar ch;

				for(TInt i = 0; i < edText.Length(); i++)

					{

					ch = edText[i];

					if(ch == '+')

						{

						if( i != 0 )

							{

							value = 0;

							break;

							}

						}

					else if(ch == '.')

						{

						fraction = ETrue;

						}

					else if(IsDigit(ch))

						{

						value = value * 10 + ch.GetNumericValue();

						if(fraction)

							{

							power = power * 10;

							}

						}

					}

				value = value / power;				

				}

			else

				{

				value = FloatEditorValue( formId  );

				}

			iCategory.SetUnitFactor( i, /*FloatEditorValue( formId  )*/value );

			}		

		}

	*iModelChanged = ETrue;

	return ETrue;

	}

// Sets the focus to the topmost line of the form when the dialog is activated

void CCnvRatesForm::SetInitialCurrentLine()

	{

	CEikDialog::SetInitialCurrentLine();

	TRAP_IGNORE(TryChangeFocusToL( IdOfFocusControl() ) );	

	}

void CCnvRatesForm::PreLayoutDynInitL()

	{

	SetTitleL( ETrue );

	const MDesCArray* currencies = iCategory.MdcArray();

	TInt len( currencies->MdcaCount() );

	for( TInt i = 0; i < len; i++ )

		{

		if( i != iCategory.BaseUnit() )

			{

			// form controls don't like id = 0, so we need to do id += 1..

			CCoeControl* control =

				CreateLineByTypeL( currencies->MdcaPoint( i ),

				ActivePageId(),

				i + 1,

				EEikCtFlPtEd,

				NULL );

			//Keep the id's of the form in an array so that deletion based on form ids is not a problem.

			iFormIdMapArray.Append(i+1);

			CEikFloatingPointEditor* editor =

				static_cast< CEikFloatingPointEditor* >( control );

			editor->ConstructL( 0, 9e99, 12 );	// 9e99 = max TReal

			TReal value( iCategory.UnitFactor( i ) );

			editor->SetValueL( &value );

			}

		}

	}

void CCnvRatesForm::CmdChangeCurrencyNameL()

	{

	// 16 is long enough, current edit window max length is 13

	// (defined in R_CNV_UNITNAME_QUERY )

	TBuf< 16 > newName;

	TBool nameOk( EFalse );

	TInt controlId = IdOfFocusControl();	

	TInt index =  controlId - 1;

	index = iFormIdMapArray.Find( controlId ); //get the index where the id i

	TUint uintindex = index ;//To remove warnings

	if( uintindex  >= iCategory.BaseUnit())

		{

		index++;

		}

	const MDesCArray* names = iCategory.MdcArray();

	newName.Copy( names->MdcaPoint( index  ).Left( MAXCURRENCYNAMELENGTH ) );

	TCurrencyType type = NewCurrencyNameDialogL( newName, nameOk );

	if(nameOk)

		{

		iCategory.SetUnitName( index , newName , type);

		Line( controlId )->SetCaptionL( newName );

		Line( controlId )->DrawDeferred();

		nameOk = ETrue;

		*iModelChanged = ETrue;

		}	

	}

void CCnvRatesForm::CmdSetAsBaseCurrencyL()

	{

	CAknQueryDialog* dlg = CAknQueryDialog::NewL();

	if( dlg->ExecuteLD( R_CNV_CONFIRMATION_QUERY ) )

		{

		// form controls don't like ID = 0, so IDs are unit id + 1;

		TInt baseUnit;

		TUint baseUnitIndex; //To remove warnings

		//Get the current id of the form.

		TInt currentFocusIndex = IdOfFocusControl();

		//Find the id in the map array

		baseUnit = iFormIdMapArray.Find(currentFocusIndex);

		baseUnitIndex = baseUnit; //To remove warnings

		//adjust the baseUnitIndxex to the index in the Currency Category array..

		if( baseUnitIndex >= iCategory.BaseUnit())

			{

			baseUnit++;

			}

		iHistoryBaseUnit = baseUnit;

		iCategory.SetBaseUnit( baseUnit );

		// Reset all currency rates to 1

		TInt len( iCategory.MdcArray()->MdcaCount() );

		for( TInt i = 0; i < len; i++ )

			{

			iCategory.SetUnitFactor( i, 1.0 );

			}

		// Except the base unit factor is set to 1.0

		iCategory.SetUnitFactor( baseUnit, 1.0 );

		// We have to destroy and relaunch the form

		*iWantsRelaunch = ETrue;

		delete this;

		}

	}

// Reset the title to default. Don't want a leave.

// If it fails, it fails. For use in the destructor.

void CCnvRatesForm::SetDefaultTitle()

	{

	 TRAP_IGNORE(SetTitleL( EFalse ) );

	}

void CCnvRatesForm::SetTitleL( TBool aNonDefault )

	{

	CAknTitlePane* title = static_cast< CAknTitlePane* >(

		iEikonEnv->AppUiFactory()->StatusPane()->

		ControlL( TUid::Uid( EEikStatusPaneUidTitle ) ) );

	if( aNonDefault )

		{

		TInt baseUnit = iCategory.BaseUnit();

		const MDesCArray* currencies = iCategory.MdcArray();

		TPtrC unitName = currencies->MdcaPoint( baseUnit );

		// stuff it into the title text's placeholder

		HBufC* titleText = StringLoader::LoadL( R_CNV_RATESFORM_TITLE,

			unitName, iEikonEnv );

		TPtr titleTextPtr = titleText->Des();

		CleanupStack::PushL( titleText );

		AknTextUtils::DisplayTextLanguageSpecificNumberConversion(titleTextPtr);

		title->SetTextL( *titleText );

		CleanupStack::PopAndDestroy( titleText ); // titleText

		}

	else

		{

		title->SetTextToDefaultL();

		}

	}	

void CCnvRatesForm::DynInitMenuPaneL( TInt aResourceId, CEikMenuPane* aMenuPane )

	{

	//No delete option  for more than two currencies

	const MDesCArray* names = iCategory.MdcArray();

	TInt count = names->MdcaCount();

	if (aResourceId == R_CNV_RATESFORM_MENUPANE)

		{

		if(count <= 2)

			{

			aMenuPane->SetItemDimmed(ECmdDeleteCurrency, ETrue);

			}

		else

			{

			aMenuPane->SetItemDimmed(ECmdDeleteCurrency, EFalse);

			}

		if(count >= KMaxNumberAddCurrency )

			{

			aMenuPane->SetItemDimmed(ECmdAddCurrency, ETrue);

			}

		else

			{

			aMenuPane->SetItemDimmed(ECmdAddCurrency, EFalse);

			}

		if (!FeatureManager::FeatureSupported(KFeatureIdHelp))

			{

			aMenuPane->SetItemDimmed(EAknCmdHelp, ETrue);

			}

		}

	}

//New methods which will imlement add and delete currency implementation

void CCnvRatesForm::AddNewCurrencyL()

	{	

	//_LIT(KDefaultText,"Foreign");

	//TBuf<16> newFieldPtr;

	//newFieldPtr.Format(KDefaultText);

	HBufC* foreignText = StringLoader::LoadLC( R_QTN_CNV_FOREIGN,iEikonEnv );

	TBuf<16> newFieldPtr;

	newFieldPtr.Copy(foreignText->Left(MAXCURRENCYNAMELENGTH));

	TBool nameEntered(EFalse);

	TCurrencyType type = 	NewCurrencyNameDialogL( newFieldPtr, nameEntered, ETrue );

	TInt id = IdOfFocusControl(); //Get the focus controls id

	TInt index = iFormIdMapArray.Find(id); //get the index where the id i

	TInt indexOfCurrency = index;

	TUint uintindex = indexOfCurrency;//To remove warnings

	if( uintindex  >= iCategory.BaseUnit())

		{

		indexOfCurrency++;

		}

	if(nameEntered)//Dont add any field if the user cancels the dialog

		{

		TReal real = 1.0;

		iCategory.AddNewCurrencyL( indexOfCurrency + 1, newFieldPtr, real, type);		

		//TInt newItemId = 0;

		TInt newItemId = iFormIdMapArray[0];

		//Get the largest formId present now in the form...

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

			{		

			if( newItemId  < iFormIdMapArray[i])

				newItemId = iFormIdMapArray[i];

			}

		newItemId++;

		//Update the new FormId into the form id map array

		if( index + 1 < iFormIdMapArray.Count() )

			{

			iFormIdMapArray.Insert(newItemId,index + 1 );

			}

		else

			{

			iFormIdMapArray.Append(newItemId);

			}

		//Update the arrray which holds the CEikEdwin ids...

		iFormIdEdwinMapArray.Append(newItemId);

        CCoeControl* control = CreateLineByTypeL(newFieldPtr, ActivePageId(),

            newItemId , EEikCtFlPtEd, NULL ) ;

        CEikEdwin* edwin = STATIC_CAST( CEikEdwin*, control );

        CEikFloatingPointEditor* fpEditor = STATIC_CAST( 

        CEikFloatingPointEditor*, control );

        fpEditor->SetMinMax( 0, 9e99 );

        edwin->ConstructL( EEikEdwinNoHorizScrolling | EEikEdwinResizable, 10, 12, 10 );

        edwin->SetAknEditorNumericKeymap( EAknEditorConverterNumberModeKeymap );

        edwin->SetAknEditorAllowedInputModes( EAknEditorNumericInputMode );

        edwin->SetAknEditorInputMode( EAknEditorNumericInputMode );

        edwin->SetAknEditorSpecialCharacterTable( 0 );

        edwin->CreateTextViewL();

        Line( newItemId )->ActivateL();

        // Set the editor's value at last and use a number instead of the fixed character.

        SetFloatEditorValueL( IdOfFocusControl(), 1 );

		*iModelChanged = ETrue;

		}	

		CleanupStack::PopAndDestroy(); // foreignText HBufC

	}

void CCnvRatesForm::DeleteCurrencyL()

	{

	TInt LineForDeletion = IdOfFocusControl();

	TInt indexOfCurrency = iFormIdMapArray.Find(LineForDeletion);

	TUint index = indexOfCurrency; //To remove warnings

	if( index >= iCategory.BaseUnit())

		{

		indexOfCurrency++;

		}

	const MDesCArray* names = iCategory.MdcArray();

		TBuf<16> currentName;

	currentName.Copy( names->MdcaPoint( indexOfCurrency ).Left( MAXCURRENCYNAMELENGTH ) );

	HBufC* confirmDelete = StringLoader::LoadLC(

		R_QTN_CNV_CONFIRM_DELETE,currentName);

	CAknQueryDialog* dlg = CAknQueryDialog::NewL();

	dlg->SetPromptL( *confirmDelete);

	if( dlg->ExecuteLD( R_CNV_CONFIRMATION_QUERY ) )

		{