/*

* 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:           

 *      Provides the TZhuyinSymbolsMethods definition 

 *

*/

#include "aknfepzhuyinconvertion.h"

_LIT(KFullStop, "\x002E");

_LIT(KToneMark0, "\x0020");

_LIT(KToneMark1, "\x02CA");

_LIT(KToneMark2, "\x02C7");

_LIT(KToneMark3, "\x02CB");

_LIT(KToneMark4, "\x02D9");

const TInt KMinZhuyinUnicode = 0x3105;

const TInt KMaxZhuyinUnicode = 0x3129;

const TInt KMaxBufLen = 100;

const TInt KMaxChineseCount = 7;

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

// Convert aArray to a descriptor outputed through aOutDes.

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

//

TInt TZhuyinSymbolsMethods::Convert2Des ( CDesCArrayFlat* aArray, TDes& aOutDes )

    {

    TInt bufLen = 0;

    TInt i = 0;

    for ( ; i < aArray->Count(); i++ )

        {

        bufLen = bufLen + aArray->MdcaPoint(i).Length();

        if ( bufLen > KMaxBufLen ) 

            {

            return i;

            }

        aOutDes.Append(aArray->MdcaPoint(i));

        }

    return i;

    }

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

// Update the content in eep control.

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

//

TBool TZhuyinSymbolsMethods::UpdateEEPContent( 

    CPtiEngine* aPtiengine,

    CAknFepZhuyinAnalyser* aAnalyser,

    CDesCArrayFlat* aZhuyinSymbols, 

    CDesCArrayFlat* aChineseDisped,

    CDesCArrayFlat* aCandidateList,

    TDes& aOutDes,

    TBool& aPhraseCreation)

    {

    TBool rnt = EFalse;

    TRAPD( ret, rnt = UpdateEEPContentL( aPtiengine, 

                                         aAnalyser, 

                                         aZhuyinSymbols, 

                                         aChineseDisped, 

                                         aCandidateList, 

                                         aOutDes, 

                                         aPhraseCreation ) );

    if ( KErrNone != ret )

        {

        return EFalse;

        }

    return rnt;

    }

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

// clean.

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

//

void CleanArray( TAny* aAny )

    {

    RPointerArray<HBufC>* implArray = 

        reinterpret_cast< RPointerArray<HBufC>*> ( aAny );

    implArray->ResetAndDestroy();

    implArray->Close();

    }

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

// Update the content in eep control.

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

//

TBool TZhuyinSymbolsMethods::UpdateEEPContentL( 

    CPtiEngine* aPtiengine,

    CAknFepZhuyinAnalyser* aAnalyser,

    CDesCArrayFlat* aZhuyinSymbols, 

    CDesCArrayFlat* aChineseDisped,

    CDesCArrayFlat* aCandidateList,

    TDes& aOutDes,

    TBool& aPhraseCreation)

    {

    TBuf<KMaxBufLen> buf;

    Convert2Des( aZhuyinSymbols, buf );

    RPointerArray<HBufC> list;

    TCleanupItem cleanitem( CleanArray, &list );

    CleanupStack::PushL( cleanitem );

    HBufC* retString = aPtiengine->GetCandidatesByInputString( buf, list,

        EFalse );

    if ( buf.Length() == 0 )

        {

        Convert2Des( aChineseDisped, aOutDes );

        delete retString;

        aCandidateList->Reset();

        aCandidateList->Compress();

        CleanupStack::PopAndDestroy();

        return ETrue;

        }

    CleanupStack::PushL( retString );

    TBool valid = aAnalyser->AnalyzeL( buf );

    HBufC* showbuf = aAnalyser->LastAnalysisResult();

    aCandidateList->Reset();

    if ( retString->Compare( buf ) != 0 || 

        retString->Compare( buf ) == 0 && aChineseDisped->Count() != 0 )

        {

        // Display the candidates for the 1st chinese character group.

        aPhraseCreation = ETrue;

        list.ResetAndDestroy();

        TInt length = 0;

        TInt i = 0;

        for ( i = 0; i < showbuf->Length(); i++ )

            {

            if ( showbuf->Mid(i, 1).Compare(KFullStop) == 0 )

                {

                length = i;

                break;

                }

            if ( showbuf->Mid(i, 1).Compare(KToneMark0) == 0 

                || showbuf->Mid(i, 1).Compare(KToneMark1) == 0 

                || showbuf->Mid(i, 1).Compare(KToneMark2) == 0

                || showbuf->Mid(i, 1).Compare(KToneMark3) == 0

                || showbuf->Mid(i, 1).Compare(KToneMark4) == 0 )

                {

                length = i + 1;

                break;

                }

            }

        if ( i == showbuf->Length())

            {

            length = i;

            }

        CleanupStack::PopAndDestroy( retString );

        TPtrC tmp = showbuf->Left( length );

        retString = aPtiengine->GetCandidatesByInputString( tmp, list, EFalse );

        CleanupStack::PushL( retString );

        for (TInt ii = 0; ii < list.Count(); ii++ )

            {

            aCandidateList->AppendL( *(list[ii]) );

            }

        }

    else

        {

        aPhraseCreation = EFalse;

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

            {

            aCandidateList->AppendL( *(list[i]) );

            }

        }

    CleanupStack::Pop( retString );

    CleanupStack::PopAndDestroy();

    Convert2Des( aChineseDisped, aOutDes );

    if ( !valid )

        {

        aOutDes.Append(buf);

        }

    else

        aOutDes.Append(*showbuf);

    delete retString;

    if ( aZhuyinSymbols->Count() > 0

        && ( aZhuyinSymbols->MdcaPoint(0).Compare(KToneMark0) == 0 

        || aZhuyinSymbols->MdcaPoint(0).Compare(KToneMark1) == 0 

        || aZhuyinSymbols->MdcaPoint(0).Compare(KToneMark2) == 0

        || aZhuyinSymbols->MdcaPoint(0).Compare(KToneMark3) == 0

        || aZhuyinSymbols->MdcaPoint(0).Compare(KToneMark4) == 0 ) )

        {

        valid = EFalse;

        }

    if ( aCandidateList->Count() != 0 && aOutDes.Length() == 1 )

        {

        valid = ETrue;

        }

    return valid;

    }

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

// Commit a chinese character from candidate list.

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

//

TBool TZhuyinSymbolsMethods::AppendChineseChar( 

    const TDes& aChinese,

    CAknFepZhuyinAnalyser* aAnalyser,

    CDesCArrayFlat* aZhuyinSymbols, 

    CDesCArrayFlat* aChineseDisped,

    CDesCArrayFlat* aZhuyinSymbolsForChinese )

    {

    TBuf<KMaxBufLen> buf;

    buf.Copy(aChinese);

    if ( aChineseDisped->Count() >= KMaxChineseCount )

        {

        return ETrue;

        }

    buf.Zero();

    Convert2Des(aZhuyinSymbols, buf);

    TBool valid = EFalse;

    TRAPD( err, valid = aAnalyser->AnalyzeL( buf ) );

    if ( KErrNone != err )

        {

        return EFalse;

        }

    if ( !valid )

        {

        return EFalse;

        }

    else

        {

        HBufC* showbuf = aAnalyser->LastAnalysisResult();

        TInt length = 0;

        TInt i = 0;

        for ( i = 0; i < showbuf->Length(); i++ )

            {

            if ( showbuf->Mid(i, 1).Compare(KFullStop) == 0 )

                {

                length = i;

                break;

                }

            if ( showbuf->Mid(i, 1).Compare(KToneMark0) == 0 

                || showbuf->Mid(i, 1).Compare(KToneMark1) == 0 

                || showbuf->Mid(i, 1).Compare(KToneMark2) == 0

                || showbuf->Mid(i, 1).Compare(KToneMark3) == 0

                || showbuf->Mid(i, 1).Compare(KToneMark4) == 0 )

                {

                length = i + 1;

                break;

                }

            }

        if ( i == showbuf->Length())

            {

            length = i;

            }

        // update arrays

        TRAPD( ret, aChineseDisped->AppendL(aChinese) );

        if ( KErrNone != ret )

            {

            return EFalse;

            }

        TBuf<KMaxBufLen> tmpbuf;

        for ( TInt ii = 0; ii < length; ii++ )

            {

            tmpbuf.Append(aZhuyinSymbols->MdcaPoint(ii));

            }

        TRAPD( ret1, aZhuyinSymbolsForChinese->AppendL(tmpbuf) );

        if ( KErrNone != ret1 )

            {

            return EFalse;

            }

        aZhuyinSymbols->Delete(0, length);

        if ( aChineseDisped->Count() >= KMaxChineseCount 

            || aZhuyinSymbols->Count() == 0 )

            {

            return ETrue;

            }

        else

            {

            return EFalse;

            }

        }

    }

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

// append the zhuyin symbol to the zhuyin array form zhuyin buf.

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

//

void TZhuyinSymbolsMethods::GetZhuyinSymbolsL( 

    CDesCArrayFlat* aZhuyinSymbols,  

    const TDesC& aInputBuf )

    {

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

        {

        aZhuyinSymbols->InsertL(i, aInputBuf.Mid(i,1));

        }

    }

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

// Delete a chinese character from aChineseDisped array

// and update related array in the meantime.

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

//

TBool TZhuyinSymbolsMethods::DeleteChineseChar(

    CDesCArrayFlat* aZhuyinSymbols, 

    CDesCArrayFlat* aChineseDisped,

    CDesCArrayFlat* aZhuyinSymbolsForChinese )

    {

    if ( aChineseDisped->Count() == 0 )

        {

        return EFalse;

        }

    TBuf<KMaxBufLen> buf;

    buf.Append( aZhuyinSymbolsForChinese->MdcaPoint( 

        aZhuyinSymbolsForChinese->Count() - 1 ) );

    TRAPD( ret, GetZhuyinSymbolsL( aZhuyinSymbols, buf ) );

    if ( KErrNone != ret )

        {

        return EFalse;

        }

    aChineseDisped->Delete(aChineseDisped->Count() - 1);

    aZhuyinSymbolsForChinese->Delete(aZhuyinSymbolsForChinese->Count() - 1);

    return ETrue;

    }

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

// Delete a chinese character from aChineseDisped array

// and update related array in the meantime.

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

//

TBool TZhuyinSymbolsMethods::DeleteZhuyinSymbol(

    CDesCArrayFlat* aZhuyinSymbols, 

    TInt aKeyStroke

    )

    {

    TInt delCount = 0;

    if ( aKeyStroke == aZhuyinSymbols->Count() )

        {

        delCount++;

        }

    else if ( aKeyStroke < aZhuyinSymbols->Count() )

        {

        delCount++;

        }

    else

        {

        return EFalse;

        }

    aZhuyinSymbols->Delete( aKeyStroke-1, delCount );

    return ETrue;

    }

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

// Refresh the cursor position according to the input parameters.

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

//

TInt TZhuyinSymbolsMethods::RefreshCursorPos (

    TInt aChineseNum,

    const TDes& aShownContent,

    TInt aKeyStrokePos )

    {

    TInt cursorPos = aChineseNum;

    TInt index = 0;

    TInt count = 0;

    if ( aShownContent.Length() - aChineseNum <= 0 )

        {

        return aChineseNum;

        }

    if ( 0 == aKeyStrokePos )

        {

        return aChineseNum;

        }

    TPtrC zhuyinShown = aShownContent.Right( aShownContent.Length() - 

        aChineseNum );

    if ( zhuyinShown.Length() == 0 )

        {

        return aChineseNum;

        }

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

        {

        if ( 0 != zhuyinShown.Mid( i, 1 ).Compare( KFullStop ) )

            {

            count = count + 1;

            }

        if ( aKeyStrokePos == count )

            {

            index = i + 1;

            break;

            }

        }

    return cursorPos + index;

    }

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

// Get the number of zhuyin symbol group.

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

//

TInt TZhuyinSymbolsMethods::GetChineseCount(const TDes& aShown)

    {

    TInt i = 0;

    TInt count = 0;

    for ( i = 0; i < aShown.Length(); i++ )

        {

        if ( aShown.Mid(i, 1).Compare(KFullStop) == 0

            || aShown.Mid(i, 1).Compare(KToneMark0) == 0 

            || aShown.Mid(i, 1).Compare(KToneMark1) == 0 

            || aShown.Mid(i, 1).Compare(KToneMark2) == 0

            || aShown.Mid(i, 1).Compare(KToneMark3) == 0

            || aShown.Mid(i, 1).Compare(KToneMark4) == 0 )

            {

            count++;

            }

        }

    if ( aShown.Right(1).Compare(KToneMark0) == 0 

        || aShown.Right(1).Compare(KToneMark1) == 0 

        || aShown.Right(1).Compare(KToneMark2) == 0

        || aShown.Right(1).Compare(KToneMark3) == 0

        || aShown.Right(1).Compare(KToneMark4) == 0 )

        {

        return count;

        }

    else

        {

        return count + 1;

        }

    }

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

// Whether the aFirstPhrase is a Zhuyin symbol or not.

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

//

TBool TZhuyinSymbolsMethods::IsZhuyinSymbol( const TDesC& aFirstPhrase )

    {

    if ( aFirstPhrase.Length() > 1 )

        {

        return EFalse;

        }

    if ( aFirstPhrase[0] >= KMinZhuyinUnicode &&

         aFirstPhrase[0] <= KMaxZhuyinUnicode )

        {

        return ETrue;

        }

    else

        {

        return EFalse;

        }

    }

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

// Whether the aFirstPhrase is a Zhuyin symbol or not.

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

//

TBool TZhuyinSymbolsMethods::IsZhuyinSpelling(

                                    const TDesC& /*aSymbol*/,

                                    const TInt /*index*/,

                                    CDesCArrayFlat* /*aZhuyinSymbols*/ ) 

    {

    return ETrue;

    }

// End of file