/*

* Copyright (c) 2008 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:   Calendar Lunar Plugin 

 *

*/

#include "calendarui_debug.h"

#include "calenextrarowformatter.h"

#include <calenregionalutil.rsg>

#include <AknBidiTextUtils.h>

#include <badesca.h> 

#include <eikenv.h>

#include <StringLoader.h>

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

// CollapseDuplicatesL

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

//

void CollapseDuplicatesL( TDes& aStr, TInt aPos, const TDesC& aSub )

    {

    TRACE_ENTRY_POINT;

    const TInt sublen = aSub.Length();

    if (aStr.Length() == 0 || sublen == 0)

        {

        return;

        }

    TPtrC remaining = aStr.Mid( aPos );

    TInt fstInRemaining = remaining.Find( aSub );

    if ( fstInRemaining >= 0 )

        {

        TInt restPos = fstInRemaining + sublen;

        TPtrC rest = remaining.Mid( restPos );

        TInt sndInRest = rest.Find( aSub );

        // 1) two substrings found in sequence 

        if (sndInRest == 0)

            { 

            // replace second substring with empty string

            TInt fst = aPos + fstInRemaining;

            TInt snd = aPos + restPos + sndInRest;

            aStr.Replace( snd, sublen, KNullDesC);

            // continue collapsing from first 

            CollapseDuplicatesL( aStr, fst, aSub );

            }

        // 2) substring found later in string 

        else if (sndInRest > 0)

            {         

            // continue collapsing from this second substring

            TInt snd = aPos + restPos + sndInRest;

            CollapseDuplicatesL( aStr, snd, aSub );

            }

        // 3) No second substring found -> nothing to collapse

        else             

            {

            TRACE_EXIT_POINT; 

            return;

            }

        }

    // No substring found 

    else

        {

        TRACE_EXIT_POINT;

        return;

        }

    }

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

// RemoveLeadingAndTrailingL

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

//

void RemoveLeadingAndTrailingL( TDes& aStr, const TDesC& aSub )

    {

    TRACE_ENTRY_POINT;

    // Trailing

    const TInt sublen = aSub.Length();

    if ( aStr.Right( sublen ).Find( aSub ) == 0 )

        {

        aStr.Replace( aStr.Length() - sublen, sublen, KNullDesC );

        }

    // Leading 

    if ( aStr.Left( sublen ).Find( aSub ) == 0 )

        {

        aStr.Replace( 0, sublen, KNullDesC );

        }

    TRACE_EXIT_POINT;

    }

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

// CCalenExtraRowFormatter::NewL

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

//

EXPORT_C CCalenExtraRowFormatter* CCalenExtraRowFormatter::NewL()

    {

    TRACE_ENTRY_POINT;

    CCalenExtraRowFormatter* self = new (ELeave) CCalenExtraRowFormatter;

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    TRACE_EXIT_POINT;

    return self;

    }

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

// CCalenExtraRowFormatter::~CCalenExtraRowFormatter

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

//

EXPORT_C CCalenExtraRowFormatter::~CCalenExtraRowFormatter()

    {

    TRACE_ENTRY_POINT;

    TRACE_EXIT_POINT;

    }

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

// CCalenExtraRowFormatter::CCalenExtraRowFormatter

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

//

CCalenExtraRowFormatter::CCalenExtraRowFormatter()

    {

    TRACE_ENTRY_POINT;

    TRACE_EXIT_POINT;

    }

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

// CCalenExtraRowFormatter::ConstructL

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

//

void CCalenExtraRowFormatter::ConstructL()

    {

    TRACE_ENTRY_POINT;

    TRACE_EXIT_POINT;

    }

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

// CCalenExtraRowFormatter::FormatExtraRowInformationL

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

//

EXPORT_C TPtrC CCalenExtraRowFormatter::FormatExtraRowInformationL( 

    CCalenLunarLocalizedInfo& aLocInfo, 

    RArray<CCalenLunarLocalizedInfo::TField>& aPrioritizedFields,

    TInt aMaxWidth,

    const CFont& aFont

    ,TBool aTwoLines

    )

    {

    TRACE_ENTRY_POINT;

    if ( aPrioritizedFields.Count() == 0)

        {

        iText = KNullDesC;

        TRACE_EXIT_POINT;

        return iText;

        }

    // Initialize substring labels

    RArray<CCalenLunarLocalizedInfo::TField> subLabels;

    CleanupClosePushL( subLabels );

    subLabels.AppendL( CCalenLunarLocalizedInfo::EAnimalYear );

    subLabels.AppendL( CCalenLunarLocalizedInfo::ELunarYear );

    subLabels.AppendL( CCalenLunarLocalizedInfo::ELunarMonthAndDay );

    subLabels.AppendL( CCalenLunarLocalizedInfo::EFestival );

    subLabels.AppendL( CCalenLunarLocalizedInfo::ESolarTerm );

    // ASSERT that all prioritized fields can be found from subLabels

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

        {

        ASSERT( subLabels.Find( aPrioritizedFields[i] ) >= 0 ); 

        }

    TBool fits = EFalse;

    do 

        {

        // Initialize substring array 

        CPtrCArray* subs = new (ELeave) CPtrCArray(10);

        CleanupStack::PushL( subs );

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

            {

            subs->AppendL( TPtrC( KNullDesC ) );

            }

        // subs->InsertL( 0, TPtrC( KNullDesC ), 5 );

        // Set wanted fields to substring array

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

            {

            CCalenLunarLocalizedInfo::TField field = aPrioritizedFields[i];        

            TInt subIx = subLabels.Find( field );

            // Replace 

            subs->Delete(subIx);

#ifdef _DEBUG

            RDebug::Print( _L("A sub count  %d"), subs->Count() );         

#endif

            subs->InsertL(subIx, TPtrC( aLocInfo.GetField( field ) ) );

#ifdef _DEBUG

            RDebug::Print( _L("B sub count %d"), subs->Count() );                       

            RDebug::Print( _L("B field %S"), &(subs->At(subIx)) );

#endif

            }

        // Format all fields to extra row     

        HBufC* extraRowFmt = StringLoader::LoadLC( R_CALE_EXTRA_ROW_LUNAR );

#ifdef _DEBUG

        RDebug::RawPrint( *extraRowFmt );

#endif

        TBuf<1000> fmt = *extraRowFmt;

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

            {

#ifdef _DEBUG

            RDebug::Print( _L("Before Format") );

            RDebug::RawPrint( fmt );

#endif

            StringLoader::Format( iText, 

                                  fmt,

                                  i + 1, // %0U is a separator 

                                  subs->At( i ) );

            fmt = iText;

#ifdef _DEBUG

            RDebug::Print( _L("After Format") );

            RDebug::RawPrint( fmt );

#endif

            }

        // Now we have something like "Year of Dog%0U%0U6/11%0U%0U" 

        // First We need to remove multiple occurences of %0U

        _LIT(KSeparatorFmt, "%0U");

        CollapseDuplicatesL( iText, 0, KSeparatorFmt );

#ifdef _DEBUG

        RDebug::Print( _L("After collapse") );

        RDebug::RawPrint( iText );

#endif

        // Remove leading and trailing %0U

        // By now, we are sure that there is max 1 %0U in the beginning

        // and in the end of string.

        RemoveLeadingAndTrailingL( iText, KSeparatorFmt );

#ifdef _DEBUG

        RDebug::Print( _L("After leading and trailing removal") );

        RDebug::RawPrint( iText );

#endif

        // If there are now separators anymore, then do not fill them

        TBool hasSeparators = iText.Find( KSeparatorFmt ) >= 0;

        if ( hasSeparators ) 

            {

            // fill in separators

            HBufC* separator = StringLoader::LoadLC( R_CALE_LUNAR_SEPARATOR );

            fmt = iText;

            StringLoader::Format( iText, 

                                  fmt,

                                  0, // %0U is a separator 

                                  *separator );

#ifdef _DEBUG

            RDebug::Print( _L("After separator insert") );

            RDebug::RawPrint( iText );

#endif

            CleanupStack::PopAndDestroy( separator );

            }

        CleanupStack::PopAndDestroy( extraRowFmt );

        CleanupStack::PopAndDestroy( subs );

        fits = TryToFitL( iText, aMaxWidth, aFont

                          , aTwoLines

                          ); 

        if ( ! fits )

            {

            iText = KNullDesC;

            TInt last = aPrioritizedFields.Count() - 1;

            if ( last >= 0 )

                {

                aPrioritizedFields.Remove( last );

                }

            }

        } while ( ! fits && aPrioritizedFields.Count() );

    CleanupStack::PopAndDestroy( &subLabels );

    TRACE_EXIT_POINT;

    return iText;

    }

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

// CCalenExtraRowFormatter::TryToFitL

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

//

TBool CCalenExtraRowFormatter::TryToFitL( const TDesC& aStr, TInt aMaxWidth, const CFont& aFont

                                           , TBool aTwoLines )

    {

    TRACE_ENTRY_POINT;

    TBool result(EFalse);

    if(aTwoLines)

        {

        CArrayFixFlat<TPtrC>* textLines = new(ELeave)CArrayFixFlat<TPtrC>( 3 );

        CleanupStack::PushL( textLines );

        CArrayFixFlat<TInt>* lineWidths = new( ELeave )CArrayFixFlat<TInt>( 1 );

        CleanupStack::PushL( lineWidths );

        lineWidths->AppendL( aMaxWidth );

        HBufC* visualText = AknBidiTextUtils::ConvertToVisualAndWrapToArrayWholeTextL(

            aStr,

            *lineWidths,

            aFont,

            *textLines);

        result = (textLines->Count() <= 2);

        CleanupStack::PopAndDestroy( lineWidths );

        CleanupStack::PopAndDestroy( textLines );

        delete visualText;

        }

    else

        {

        CFont::TMeasureTextInput::TFlags logicalOrder = static_cast<CFont::TMeasureTextInput::TFlags>(0);

        TInt textW = AknBidiTextUtils::MeasureTextBoundsWidth( aFont, aStr, logicalOrder );

        result = (textW <= aMaxWidth);

        }   

    TRACE_EXIT_POINT;

    return result;

    }

//EOF