/*

* Copyright (c) 2005 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 CAknFepUIInputStateEntryQwertyPinyin methods.

*

*/

#include "AknFepUIManagerStateInterface.h"  //MAknFepUIManagerStateInterface

#include "AknFepUiCtrlContainerChinese.h"

#include "AknFepManagerUIInterface.h"       //MAknFepManagerUIInterface

#include "AknFepUICtrlCandidatePane.h"

#include "AknFepUICtrlInputPane.h"

#include "AknFepUiInputStateEntryQwertyPinyin.h"

#include "AknFepManager.h"                  //FepMan flag

#include <PtiEngine.h>      //CPtiEngine

#include <e32keys.h>        //keys  

#include <avkon.rsg>

const TText KPinyinTone4Valid = 0x02D9;

const TText KPinyinTone4Invalid = 0x0020;

const TInt KMaxCandidateCountFromCore = 6;

TAknFepInputStateEntryQwertyPinyin::TAknFepInputStateEntryQwertyPinyin(

                               MAknFepUIManagerStateInterface* aOwner,

                               MAknFepUICtrlContainerChinese* aUIContainer)

    :TAknFepInputStateEntryQwertyBase(aOwner,aUIContainer)                           

    {

    UIContainer()->CandidatePane()->ShowCandidateOrdinals(ETrue);

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    ptiengine->SetInputMode(EPtiEnginePinyinQwerty);

    ptiengine->SetCase(EPtiCaseLower);

    ptiengine->SetCandidatePageLength(MAknFepUICtrlContainerChinese::ELayoutInput);

    UpdateIndicator();

    }

TBool TAknFepInputStateEntryQwertyPinyin::HandleKeyL(TInt aKey, TKeyPressLength aLength)

    {

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();    

    TBool ret = ETrue;

    if((aKey == EStdKeyLeftFunc) && (aLength == EShortKeyPress))

        {

        if(ptiengine->IncrementToneMark(ETrue))

            {

            RefreshUI();

            }

        }

    else if(aKey == EStdKeyBackspace)

        {

		if (iOwner->PtiEngine()->DeleteKeyPress().Length())

            {

            RefreshUI();

            }

        else

            {

            iOwner->FepMan()->TryCloseUiL();

            if (aLength == ELongKeyPress)

                {

                iOwner->FepMan()->SetLongClearAfterCloseUI(ETrue);

                }

            }

        }        

    else if((aLength == EShortKeyPress) && iOwner->IsValidChineseInputKeyQwerty(aKey))

        {

        TInt stringBeforeLength(0);

        TInt stringAfterLength(0);

        stringBeforeLength = ptiengine->GetPhoneticSpelling(1).Length();

        stringAfterLength = ptiengine->AppendKeyPress((TPtiKey)aKey).Length();

        if (stringBeforeLength != stringAfterLength)

            {

            if (ptiengine->GetPhoneticSpelling(1).Length() == 1)

            {

            iOwner->FepMan()->UpdateCbaL(R_AVKON_SOFTKEYS_EMPTY);

            }            

            RefreshUI();

            }

	    else

	        {

	        iOwner->FepMan()->PlaySound(EAvkonSIDErrorTone);

	        }            

        if (ptiengine->GetPhoneticSpelling(1).Length() == 0)

            {

            iOwner->FepMan()->UpdateCbaL(NULL);

            }

        }        

    else if(aKey == EStdKeyDevice1)

        {

        iOwner->FepMan()->TryCloseUiL();

        }

    else if(!( HandleVerticalNavigation(aKey) || HandleHorizontalNavigation(aKey) ))

        {

        // it may be one of the 'valid' numbers..

        TInt index = MapKeyToIndex(aKey);

        MAknFepUICtrlCandidatePane* candidatePane = UIContainer()->CandidatePane();

        if(candidatePane->SelectIndex(index) || aKey == EStdKeyDevice3 || aKey == EStdKeyEnter)

            {

            TPtrC text = candidatePane->CurrentCandidate();

            if(text.Length())

                {            

                MAknFepManagerUIInterface* fepMan = iOwner->FepMan();

                iOwner->FepMan()->NewCharacterL(text);

                iOwner->FepMan()->CommitInlineEditL();

                if (iOwner->FepMan()->IsFlagSet(CAknFepManager::EFlagEditorFull))

                    {

                    iOwner->FepMan()->ClearFlag(CAknFepManager::EFlagEditorFull);

                    iOwner->FepMan()->TryCloseUiL();

                    }

                else

                    {

                    iOwner->ChangeState(EPredictiveInput);

                    }

                }

            else

                {

                // No candidates available. Back to Entry state.

                iOwner->ChangeState(EEntry);

                }

            }

        }

    return ret;

    }

void TAknFepInputStateEntryQwertyPinyin::RefreshUI()

    {

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();

    MAknFepUICtrlInputPane* inputPane = uiContainer->InputPane();

    SetInputPaneToneMark();    

    TPtrC ptr = ptiengine->GetPhoneticSpelling(1);

    TBool multiplePages = ptiengine->MoreCandidatePages();

    TInt bufLength = ptiengine->CandidatePage().Length();

    TBool showHorizontalScrollArrows = multiplePages || bufLength>1;

    UIContainer()->ShowHorizontalScrollArrows(showHorizontalScrollArrows); 

    UIContainer()->ShowVerticalScrollArrows(multiplePages);

    // set container's position

    TPoint baseLine = TPoint(0,0);

    TInt height = 0;

    TInt ascent = 0;

    TRAPD(ret,iOwner->FepMan()->GetScreenCoordinatesL(baseLine,height,ascent));

    if (ret == KErrNone)

        {

        uiContainer->SetContainerPosition(baseLine, height);    

        }

    TText toneMark;

    TBool toneMarkEntered = ptiengine->ToneMark(toneMark);

    TBuf<1> validToneMarkBuf;

    if(toneMarkEntered)

        {

        // override specific invalid tonemark character only, the others are the same character 

        // when both valid and invalid

        if(toneMark == KPinyinTone4Invalid)

            toneMark = KPinyinTone4Valid;

        validToneMarkBuf.Append(toneMark);

        }

    ptiengine->EnableToneMarks(ETrue);

    if (ptr.Length() > 0)

        {

        TPtrC candidates = ptiengine->CandidatePage();

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

        uiContainer->Enable(ETrue);

        uiContainer->CandidatePane()->SelectFirst();

        inputPane->SetText(ptr);

        inputPane->SetToneMark(validToneMarkBuf);  

        UpdateIndicator();

        }

    }

TBool TAknFepInputStateEntryQwertyPinyin::HandleHorizontalNavigation(TInt aKey)

    {

    MAknFepUICtrlCandidatePane* candidatePane = UIContainer()->CandidatePane();

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    TBool response = EFalse;

    // Do navigation...

    if (aKey == EStdKeyLeftArrow)

        {

        if (candidatePane->SelectedIndex() == 0 && 

            ptiengine->NumberOfCandidates() == 0)

            {

            return ETrue;

            }

        if(!candidatePane->SelectPrev())

            {

            ptiengine->PreviousCandidatePage();

            candidatePane->SetCandidateBuffer(ptiengine->CandidatePage());

            candidatePane->SelectLast();

            }

        UpdateIndicator();            

        response = ETrue;

        }

    else if (aKey == EStdKeyRightArrow)

        {

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

        if (bufLength != KMaxCandidateCountFromCore &&

            candidatePane->SelectedIndex() == (bufLength -1))

            {

			return ETrue;

            }

        if(!candidatePane->SelectNext())

            {

            ptiengine->NextCandidatePage();

            candidatePane->SetCandidateBuffer(ptiengine->CandidatePage());

            candidatePane->SelectFirst();

            }

        UpdateIndicator();    

        response = ETrue;

        }

    return response;

    }

TBool TAknFepInputStateEntryQwertyPinyin::HandleVerticalNavigation(TInt aKey)

    {

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    if (aKey == EStdKeyDownArrow || aKey == EStdKeySpace)

        {

        if (iOwner->PtiEngine()->CandidatePage().Length() != 

            KMaxCandidateCountFromCore)

            {

            return ETrue;

            }

        ptiengine->NextCandidatePage();

        }

    else if (aKey == EStdKeyUpArrow)

        {

        if (ptiengine->NumberOfCandidates() == 0)

            {								 

            return ETrue;

            }

        ptiengine->PreviousCandidatePage();

        }

    else

        {

        return EFalse;

        }

    MAknFepUICtrlCandidatePane* candidatePane = UIContainer()->CandidatePane();

    candidatePane->SelectFirst();

    candidatePane->SetCandidateBuffer(ptiengine->CandidatePage());

    UpdateIndicator();

    return ETrue;

    }

 void TAknFepInputStateEntryQwertyPinyin::UpdateIndicator()

    {

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();        

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

    MAknFepUICtrlCandidatePane* candidatePane = uiContainer->CandidatePane();

    if (ptiengine->NumberOfCandidates() == 0)

        {

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

        }

    else

        {

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

        }

    uiContainer->CandidatePane()->ShowDownScrollArrows

        (bufLength == KMaxCandidateCountFromCore ? ETrue : EFalse);

    if (candidatePane->SelectedIndex() == 0 && 

        ptiengine->NumberOfCandidates() == 0)

        {

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

        }

    else

        {

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

        }

    if (bufLength != KMaxCandidateCountFromCore &&

        candidatePane->SelectedIndex() == (bufLength -1))

        {

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

        }

    else

        {

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

        }

    }

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

// TAknFepInputStateEntryQwertyPinyin::HandleCommandL

// Handling Command

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

//

 void TAknFepInputStateEntryQwertyPinyin::HandleCommandL( TInt aCommandId )

    {

    TAknFepInputStateChineseBase::HandleCommandL( aCommandId );

    }

// End of file