/*

* 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 TAknFepInputStateEntryZhuyinPhraseCreation methods.

 *

*/

#include <PtiEngine.h>                          //CPtiEngine

#include <avkon.rsg>

#include <AknFep.rsg>

#include "aknfepuiinputstatezhuyinphrasecreationbase.h"

#include "AknFepUIManagerStateInterface.h"      //MAknFepUIManagerStateInterface

#include "AknFepManagerUIInterface.h"           //MAknFepManagerUIInterface

#include "AknFepUiCtrlContainerChinese.h"

#include "AknFepUICtrlPinyinPopup.h"    //Pinyin phrase

#include "aknfepuictrleditpane.h" 

#include "AknFepUICtrlCandidatePane.h"

#include "AknFepUICtrlInputPane.h"

#include "aknfepzhuyinkeyhandlerinterface.h" //MZhuyinKeyHandler

#include "AknFepZhuyinAnalyser.h"

#include "aknfepzhuyinconvertion.h" //TZhuyinSymbolsMethods

_LIT( KStrokeManualSeparator, "\x002E");

_LIT( KToneMark1, "\x0020" );

_LIT( KToneMark2, "\x02CA" );

_LIT( KToneMark3, "\x02C7" );

_LIT( KToneMark4, "\x02CB" );

_LIT( KToneMark5, "\x02D9" );

const TInt KMaxBufLen = 100;

const TInt KMaxKeystrokeCount = 100;

const TInt KMaxInputLength = 31;

const TInt KMaxPhraseCreationCount = 7;

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

// C++ constructor

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

//

TAknFepInputStateZhuyinPhraseCreationBase::TAknFepInputStateZhuyinPhraseCreationBase(

    MAknFepUIManagerStateInterface* aOwner,

    MAknFepUICtrlContainerChinese* aUIContainer ) :

    TAknFepInputStateCandidateBase( aOwner, aUIContainer )

    {    

    iState = EEntry;

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();

    MAknFepUICtrlCandidatePane* candidatePane = uiContainer->CandidatePane();

    uiContainer->FocusCandidatePane(EFalse);

    TBool multiplePages = !(uiContainer->CandidatePane()->IsLastPage() &&

                            uiContainer->CandidatePane()->IsFirstPage());

    TInt bufLength = iOwner->PtiEngine()->CandidatePage().Length();

    TBool showHorizontalScrollArrows = multiplePages || bufLength>1;

    uiContainer->ShowHorizontalScrollArrows(showHorizontalScrollArrows); 

    uiContainer->ShowVerticalScrollArrows(multiplePages);

    uiContainer->FocusCandidatePane(ETrue);

    candidatePane->SetHighlighted(ETrue);

    candidatePane->ShowCandidateOrdinals(EFalse);

    candidatePane->SelectFirstPhrase();

    }

TBool TAknFepInputStateZhuyinPhraseCreationBase::AddKeystrokeL( TInt aKey )

    {

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();

    MAknFepUICtrlPinyinPopup* popup = uiContainer->PinyinPopupWindow();

    MAknFepUICtrlEditPane* editPane = uiContainer->EditPaneWindow();

    CDesCArrayFlat* zhuyinSymbol = popup->ZhuyinSymbols();

    TInt chineseCount = popup->ChineseCharsDisped()->Count();

    TInt currentIndex = editPane->GetCursorIndexOfKeystroke();

    TBuf<1> buf;

    TBuf<KMaxBufLen> showbuf;

    showbuf = uiContainer->PinyinPopupWindow()->GetEEPContent();

    TInt ret = iOwner->ZhuyinKeyHandler()->GetZhuyinSymbol( (TPtiKey)aKey, buf );  

    TInt showbufLen = showbuf.Length();

    if ( showbufLen >= KMaxInputLength )

        {

        if ( ( 0 == currentIndex ) || ( 1 == ret ) )

            {

            iOwner->ZhuyinKeyHandler()->Reset();

            return EFalse;

            }

        return ReplaceKeystrokeL( currentIndex,

                                 chineseCount,

                                 buf,

                                 zhuyinSymbol

                                 );

        }

    if ( showbufLen == KMaxInputLength - 1 )

        {

        if ( 0 == currentIndex )

            {

            iOwner->ZhuyinKeyHandler()->Reset();

            return EFalse;

            }

        else if ( 1 == ret )

            {

            zhuyinSymbol->InsertL( currentIndex, buf );

            if ( CheckKeystrokeCountL( chineseCount, zhuyinSymbol ) )

                {

                editPane->SetCursorIndexOfKeystroke( currentIndex + 1 );

                return ETrue;

                }

            else

                {

                iOwner->ZhuyinKeyHandler()->Reset();

                zhuyinSymbol->Delete( currentIndex );

                return EFalse;

                }

            }

        else

            {

            return ReplaceKeystrokeL( currentIndex,

                                     chineseCount,

                                     buf,

                                     zhuyinSymbol

                                     );

            }

        }

    if ( ( 0 == currentIndex ) && 

        ( KMaxInputLength <= showbufLen ) )

        {

        return EFalse;

        }

    else if ( ( 0 != currentIndex ) &&

        ( KMaxInputLength <= showbufLen ) )

        {

        if ( 0 == ret )

            {

            zhuyinSymbol->Delete( currentIndex - 1 );

            zhuyinSymbol->InsertL( currentIndex - 1, buf );

            return ETrue;

            }

        else

            {

            iOwner->ZhuyinKeyHandler()->Reset();

            return EFalse;

            }

        }

    else if ( ( 0 == currentIndex ) && 

        ( KMaxInputLength > showbufLen ) ) 

        {

        zhuyinSymbol->InsertL( currentIndex, buf );

        editPane->SetCursorIndexOfKeystroke( currentIndex + 1 );

        return ETrue;

        }

    else if ( ( 0 != currentIndex ) && 

        ( KMaxInputLength > showbufLen ) ) 

        {

        if ( 0 == ret )

            {

            zhuyinSymbol->Delete( currentIndex - 1 );

            zhuyinSymbol->InsertL( currentIndex - 1, buf );

            return ETrue;

            }

        else if ( 1 == ret )

            {

            zhuyinSymbol->InsertL( currentIndex, buf );

            editPane->SetCursorIndexOfKeystroke( currentIndex + 1 );

            return ETrue;

            }

        }

    return ETrue;

    }

TBool TAknFepInputStateZhuyinPhraseCreationBase::AddToneMarkL()

    {

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();

    MAknFepUICtrlPinyinPopup* popup = uiContainer->PinyinPopupWindow();

    MAknFepUICtrlEditPane* editPane = uiContainer->EditPaneWindow();

    MZhuyinKeyHandler* zhuyinKeyHandler = iOwner->ZhuyinKeyHandler();

    CDesCArrayFlat* zhuyinSymbols = uiContainer->PinyinPopupWindow()->ZhuyinSymbols();

    TBuf<1> baseBuf;

    TBuf<1> buf;

    baseBuf.Zero();

    TInt strokePos = editPane->GetCursorIndexOfKeystroke();

    TBuf<KMaxBufLen> showbuf;

    showbuf = popup->GetEEPContent();

    if ( strokePos > 0 )

        {

        baseBuf.Append( zhuyinSymbols->MdcaPoint( strokePos - 1 ) );

        }

    TInt insert = zhuyinKeyHandler->GetToneMark( baseBuf, buf );

    if ( insert == 0 )

        {

        zhuyinSymbols->Delete ( strokePos - 1, 1 );

        zhuyinSymbols->InsertL(strokePos - 1, buf);

        }

    // for insert

    else if ( insert == 1)

        {

        if ( showbuf.Length() >= KMaxInputLength )

            {

            return EFalse;

            }

        zhuyinSymbols->InsertL(strokePos, buf);

        editPane->SetCursorIndexOfKeystroke(strokePos + 1);

        }

    return ETrue;

    }

TBool TAknFepInputStateZhuyinPhraseCreationBase::DeleteZhuyinSymbolOrChinese()

    {

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();

    MAknFepUICtrlEditPane* editPane = uiContainer->EditPaneWindow();

    MAknFepUICtrlPinyinPopup* popup = uiContainer->PinyinPopupWindow();

    CDesCArrayFlat* zhuyinSymbols = popup->ZhuyinSymbols();

    CDesCArrayFlat* chineseDisped = popup->ChineseCharsDisped();

    CDesCArrayFlat* zhuyinSymbolsForChinese = popup->ZhuyinSymbolsForChineseCharsDisped();

    TInt keyStrokePos = editPane->GetCursorIndexOfKeystroke();

    if ( 1 == keyStrokePos )

        {

        editPane->Reset();

        }

    if ( keyStrokePos != 0 )

        {

        TZhuyinSymbolsMethods::DeleteZhuyinSymbol(

            zhuyinSymbols,

            keyStrokePos);

            editPane->SetCursorIndexOfKeystroke(keyStrokePos-1);

        }

    else if ( chineseDisped->Count() )

        {

        TInt oldLen =  zhuyinSymbols->Count();

        TZhuyinSymbolsMethods::DeleteChineseChar(

            zhuyinSymbols,

            chineseDisped,

            zhuyinSymbolsForChinese

            );

        TInt newLen = zhuyinSymbols->Count();

        editPane->SetCursorIndexOfKeystroke(newLen - oldLen);

        }

    return ETrue;

    }

TBool TAknFepInputStateZhuyinPhraseCreationBase::UpdateEEPContent()

    {

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    CDesCArrayFlat* zhuyinSymbols = UIContainer()->PinyinPopupWindow()->ZhuyinSymbols();

    CDesCArrayFlat* chineseDisped = UIContainer()->PinyinPopupWindow()->ChineseCharsDisped();

    CAknFepZhuyinAnalyser* analyser = iOwner->ZhuyinAnalyser();

    CDesCArrayFlat* candidateList = UIContainer()->CandidatePane()->CandidateArray();

    TBuf<KMaxBufLen> buf;

    TBool isPhraseCreation = EFalse;

    TInt extLen = chineseDisped->Count() + zhuyinSymbols->Count() - KMaxInputLength;

    if ( extLen > 0 )

        {

        TInt keyStrokePos = UIContainer()->EditPaneWindow()->GetCursorIndexOfKeystroke();

        zhuyinSymbols->Delete ( zhuyinSymbols->Count() - extLen, extLen );

        if ( keyStrokePos > zhuyinSymbols->Count() )

            {

            UIContainer()->EditPaneWindow()->SetCursorIndexOfKeystroke( zhuyinSymbols->Count() );

            }

        }

    TBool valid = TZhuyinSymbolsMethods::UpdateEEPContent(

        ptiengine,

        analyser,

        zhuyinSymbols,

        chineseDisped,

        candidateList,

        buf,

        isPhraseCreation

        );

    if ( ( chineseDisped->Count() != 0 || zhuyinSymbols->Count() > 1 ) &&

        ( candidateList->Count() != 0 ) )

        {

        for ( TInt i = 0; i < candidateList->Count(); ++i )

            {

            if ( TZhuyinSymbolsMethods::IsZhuyinSymbol( candidateList->MdcaPoint( i ) ) )

                {

                candidateList->Delete( i, 1 );

                break;

                }

            }

        }

    UIContainer()->PinyinPopupWindow()->SetEEPContentValid(valid);

    UIContainer()->CandidatePane()->SplitPhraseCandidatesIntoPages();

    if ( !valid || candidateList->Count() == 0 )

        {

        DeleteSeparatorWhenInvaild( buf );

        valid = EFalse;

        }

    CheckShowInfo( buf, zhuyinSymbols );

    UIContainer()->PinyinPopupWindow()->SetEEPContent(buf);

    return valid;

    }

void TAknFepInputStateZhuyinPhraseCreationBase::UpdateIndicator()

    {

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();

    MAknFepUICtrlCandidatePane* candidatePane = uiContainer->CandidatePane();

    TInt candidateCount = candidatePane->CandidateArray()->Count();

    if ( candidatePane->IsFirstPage() || candidateCount== 0 )

        {

        uiContainer->CandidatePane()->ShowUpScrollArrows( EFalse );

        }

    else

        {

        uiContainer->CandidatePane()->ShowUpScrollArrows( ETrue );

        }

    if ( candidatePane->IsLastPage() || candidateCount== 0 )

        {

        uiContainer->CandidatePane()->ShowDownScrollArrows( EFalse );

        }

    else

        {

        uiContainer->CandidatePane()->ShowDownScrollArrows( ETrue );

        }

    }

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

// Get high light begine position.

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

//

TInt TAknFepInputStateZhuyinPhraseCreationBase::BegPosOfMoreThanSeven()

    {

    TInt i = 0;

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();

    TBuf<KMaxBufLen> buf;

    buf = uiContainer->PinyinPopupWindow()->GetEEPContent();

    TInt characterCount = uiContainer->PinyinPopupWindow()->ChineseCharsDisped()->Count();

    TInt allTextCount = characterCount;

    // calculate the total number of character according to stroke

    for (i = 0; i < buf.Length() && allTextCount < KMaxPhraseCreationCount; i++ )

        {

        if ( ( buf.Mid( i, 1 ) == KStrokeManualSeparator )|| 

            ( buf.Mid( i, 1 ) == KToneMark1 ) ||

            ( buf.Mid( i, 1 ) == KToneMark2 ) ||

            ( buf.Mid( i, 1 ) == KToneMark3 ) ||

            ( buf.Mid( i, 1 ) == KToneMark4 ) ||

            ( buf.Mid( i, 1 ) == KToneMark5 ) )

            {

            allTextCount++;

            }

        }

    allTextCount++;

    if ( allTextCount > KMaxPhraseCreationCount )

        {

        return i;

        }

    else

        {

        return 0;

        }

    }

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

// Set high light.

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

//

void TAknFepInputStateZhuyinPhraseCreationBase::HighlightMoreThanSeven( TInt aBegPos )

    {

    MAknFepUICtrlEditPane* editPane = UIContainer()->EditPaneWindow();

    TBuf<KMaxBufLen> buf;

    buf = UIContainer()->PinyinPopupWindow()->GetEEPContent();

    TInt EndPos = buf.Length();

    editPane->SetHighlight( aBegPos, EndPos );

    }

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

// replace the keystroke.

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

//

TBool TAknFepInputStateZhuyinPhraseCreationBase::ReplaceKeystrokeL(

                                                TInt aIndex, 

                                                TInt aChineseCount,

                                                const TDesC& aSymbol, 

                                                CDesCArrayFlat* aZhuyinSymbol )

    {

    TBuf<1> bufTmp;

    bufTmp.Append( aZhuyinSymbol->MdcaPoint( aIndex - 1 ) );

    aZhuyinSymbol->Delete( aIndex - 1 );

    aZhuyinSymbol->InsertL( aIndex - 1, aSymbol );

    if ( CheckKeystrokeCountL( aChineseCount, aZhuyinSymbol ) )

        {

        return ETrue;

        }

    else

        {

        aZhuyinSymbol->Delete( aIndex - 1 );

        aZhuyinSymbol->InsertL( aIndex - 1, bufTmp );

        return EFalse;

        }

    }

void TAknFepInputStateZhuyinPhraseCreationBase::RefreshUI()

    {

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();

    MAknFepUICtrlEditPane* editPane = uiContainer->EditPaneWindow();

    CDesCArrayFlat* zhuyinSymbols = uiContainer->PinyinPopupWindow()->ZhuyinSymbols();

    CDesCArrayFlat* chineseDisped = uiContainer->PinyinPopupWindow()->ChineseCharsDisped();

    CDesCArrayFlat* candidateList = uiContainer->CandidatePane()->CandidateArray();

    // get cursor position

    TPoint baseLine;

    TInt height(0);

    TInt ascent(0);

    TRAPD(ret,iOwner->FepMan()->

        GetScreenCoordinatesL(baseLine,height,ascent));

    if ( ret == KErrNone )

        {

        uiContainer->SetContainerPosition( baseLine, height );

        }

    TBuf<KMaxBufLen> seed;

    TBool valid = ETrue;

    TBuf<KMaxBufLen> buf;

    buf = uiContainer->PinyinPopupWindow()->GetEEPContent();

    valid = uiContainer->PinyinPopupWindow()->GetEEPContentValid();

    TBool isHighlight = EFalse;

    TInt zhuyinBegPos = chineseDisped->Count();

   TRAP_IGNORE( isHighlight = !iOwner->ZhuyinAnalyser()->AnalyzeL( buf.Mid( zhuyinBegPos ) ) );

   CheckShowInfo( buf, zhuyinSymbols );

    TInt keyStrokePos = editPane->GetCursorIndexOfKeystroke();

    if ( keyStrokePos > zhuyinSymbols->Count() + 1 )

    	{

    	keyStrokePos = zhuyinSymbols->Count();

    	editPane->SetCursorIndexOfKeystroke( keyStrokePos );

    	}

    TInt newCursorPos = TZhuyinSymbolsMethods::RefreshCursorPos(

        chineseDisped->Count(),buf,keyStrokePos);

    TZhuyinSymbolsMethods::Convert2Des(zhuyinSymbols,seed);

    editPane->SetTextForZhuyin(buf,newCursorPos,chineseDisped->Count(),seed,keyStrokePos,!valid);

    if ( !valid || isHighlight

        || candidateList->Count()== 0 || zhuyinSymbols->Count() == 0 )

        {

        uiContainer->CandidatePane()->SetInVisiable();

        editPane->SetHighlight(chineseDisped->Count(),buf.Length()-1);

        uiContainer->SetControlInVisible( EFalse );

        uiContainer->Enable( ETrue );

        uiContainer->ShowHorizontalScrollArrows( EFalse );

        uiContainer->ShowVerticalScrollArrows( EFalse );   

        }

    else

        {

        uiContainer->SetControlInVisible( ETrue );

        uiContainer->CandidatePane()->SetCandidateBuffer();

        uiContainer->CandidatePane()->SelectFirstPhrase();

        uiContainer->Enable( ETrue );

        uiContainer->ShowVerticalScrollArrows( ETrue );

        }

    TInt begPos = BegPosOfMoreThanSeven();

    if ( begPos )

        {

        HighlightMoreThanSeven( begPos );

        }

    UpdateIndicator();

    }

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

// Check the keystroke count.

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

//

TBool TAknFepInputStateZhuyinPhraseCreationBase::CheckKeystrokeCountL(

                                              TInt aChineseCount,

                                              CDesCArrayFlat* aZhuyinSymbol )

    {

    TBuf<KMaxKeystrokeCount> inputBuf;

    for (TInt i = 0; i < aZhuyinSymbol->Count(); ++i )

        {

        inputBuf.Append( aZhuyinSymbol->MdcaPoint( i ) );

        }

    if ( !iOwner->ZhuyinAnalyser()->AnalyzeL( inputBuf ) )

        {

        return ETrue;

        }

    else

        {

        HBufC* showBuf = iOwner->ZhuyinAnalyser()->LastAnalysisResult();

        if ( showBuf->Length() > KMaxInputLength - aChineseCount )

            {

            return EFalse;

            }        

        }  

    return ETrue;

    }

void TAknFepInputStateZhuyinPhraseCreationBase::HandleCommandL(TInt /*aCommandId*/)

    {