/*

* Copyright (c) 2002-2005 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:            Implementation of candidate qwerty base chinese phrase state

*

*/

#include "AknFepUiInputStateCandidateQwertyBaseChinesePhrase.h"

#include "AknFepUiCtrlContainerChinese.h"

#include "AknFepUICtrlCandidatePane.h"

#include "AknFepUIManagerStateInterface.h"  //MAknFepUIManagerStateInterface

#include "AknFepManagerUIInterface.h"

#include "AknFepManager.h"                  //FepMan flag

#include "AknFepUICtrlPinyinPopup.h"

#include <PtiEngine.h>                      //CPtiEngine

const TUint16 KSegment = 0x0020;

TAknFepInputStateCandidateQwertyBaseChinesePhrase::

TAknFepInputStateCandidateQwertyBaseChinesePhrase(

                                MAknFepUIManagerStateInterface* aOwner,

                                MAknFepUICtrlContainerChinese* aUIContainer)

    :TAknFepInputStateChineseBase(aOwner, aUIContainer)

    {

    }

TBool TAknFepInputStateCandidateQwertyBaseChinesePhrase::HandleKeyL(TInt aKey, TKeyPressLength /*aLength*/)

    {

    if(aKey == EStdKeyDevice1)

        {

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

        }

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

        {

        TInt index = 0;

#ifdef RD_INTELLIGENT_TEXT_INPUT

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

        TPtiKeyboardType keyboardtype = iOwner->FepMan()->KeyboardLayout();

        if ( EPtiKeyboardQwerty4x10 == keyboardtype ||

             EPtiKeyboardQwerty3x11 == keyboardtype ||

             EPtiKeyboardHalfQwerty == keyboardtype ||

             EPtiKeyboardCustomQwerty == keyboardtype)

            {      

            MPtiLanguage *lang = NULL;

            RArray < TPtiNumericKeyBinding > keybinding;

            TBool validnumkey = EFalse;

            CPtiEngine* ptiengine = iOwner->PtiEngine();

            if( ptiengine != NULL )

                {

                lang = ptiengine->CurrentLanguage();

                }

            if( ptiengine && lang )

                {

                TRAP_IGNORE(ptiengine->GetNumericModeKeysForQwertyL(lang->LanguageCode(), 

                                                                    keybinding, keyboardtype));

                TInt numericKeysCount = keybinding.Count();

                TInt candidateCount = UIContainer()->CandidatePane()->VisibleCandidateCount();

                while ( numericKeysCount-- )

                    {

                    TPtiNumericKeyBinding numKeyBind = keybinding[numericKeysCount];

                    if ( (numKeyBind.iChar >= 0x31 && numKeyBind.iChar <= ( 0x31 + candidateCount - 1 ))

                       &&(aKey == numKeyBind.iKey))

                    	{

                    	index = numKeyBind.iChar - EPtiKey0 -1;

                    	validnumkey = ETrue;

                    	break;

                    	}

                    }

                }

            keybinding.Reset();

            if (!validnumkey)

            	{

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

                return ETrue;

            	}

            }

        else

            {

#endif

            index = MapKeyToIndex(aKey);

#ifdef RD_INTELLIGENT_TEXT_INPUT

            }             

#endif

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

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

            {

            TPtrC text = candidatePane->CurrentPhraseCandidate();

            if(text.Length())

                {            

                MAknFepManagerUIInterface* fepMan = iOwner->FepMan();

                fepMan->NewTextL(text);

                fepMan->CommitInlineEditL();

                iOwner->PtiEngine()->SetPredictiveChineseChar(text);

                if (fepMan->IsFlagSet(CAknFepManager::EFlagEditorFull))

                    {

                    fepMan->ClearFlag(CAknFepManager::EFlagEditorFull);

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

                    }

                else

                    {

#ifdef RD_INTELLIGENT_TEXT_INPUT

                    if ( EPtiKeyboardQwerty4x10 == iOwner->FepMan()->KeyboardLayout() ||

                            EPtiKeyboardHalfQwerty == iOwner->FepMan()->KeyboardLayout() ||

                            EPtiKeyboardQwerty3x11 == iOwner->FepMan()->KeyboardLayout() )

                        {

                        UIContainer()->PinyinPopupWindow()->SetChangeState( ETrue );

                        iOwner->ChangeState(EPredictiveCandidate);

                        }                    

#endif

                    }

                }

            else

                {

                // No candidates available. Back to Entry state.

                iOwner->ChangeState(EEntry);

                }

            }

        }

    return ETrue;

    }

TBool TAknFepInputStateCandidateQwertyBaseChinesePhrase::HandleHorizontalNavigation(TInt aKey)

    {

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

    TBool response = EFalse;

    // Do navigation...

    if (aKey == EStdKeyLeftArrow)

        {

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

            candidatePane->IsFirstPage() )

            {

            return ETrue;

            }

        if(!candidatePane->SelectPrev())

            {

            candidatePane->PreviousCandidatePage();

            candidatePane->SetCandidateBuffer();

            candidatePane->SelectLastPhrase();

            }

        response = ETrue;

        }

    else if (aKey == EStdKeyRightArrow)

        {

        if ( candidatePane->IsLastPage() && 

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

            {

            return ETrue;

            }  

        if(!candidatePane->SelectNext())

            {

            candidatePane->NextCandidatePage();

            candidatePane->SetCandidateBuffer();

            candidatePane->SelectFirstPhrase();

            }

        response = ETrue;

        }

    if (response)

        {

        UpdateIndicator();

        }

    return response;

    }

TBool TAknFepInputStateCandidateQwertyBaseChinesePhrase::HandleVerticalNavigation(TInt aKey)

    {

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

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

        {

        if (candidatePane->IsLastPage())

            {

            return ETrue;

            }

        if ( iState != EPredictiveCandidate &&

        		iState != EPredictiveInput )

        	{

            if ( candidatePane->NeedGetNewCandidatePage() )

                {

                if ( !iOwner->PtiEngine()->NextCandidatePage( ) )

                    {

                    if ( candidatePane->IsLastPage() )

                        {

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

                    return ETrue;

                    }

                }

            else

                {

                CDesCArrayFlat* phraseCandidates = candidatePane->CandidateArray();

                RPointerArray<HBufC> list;

                    TRAP_IGNORE(

                    GetNewCandidatesL( iOwner->PtiEngine()->CandidatePage( ), list );

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

                        {

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

                        }

                    list.ResetAndDestroy();)

                    }

                }

        	}

        candidatePane->NextCandidatePage();

        }

    else if (aKey == EStdKeyUpArrow)

        {

        if (candidatePane->IsFirstPage())

            {

            return ETrue;   

            }

        candidatePane->PreviousCandidatePage(); 

        }

    else

        {

        return EFalse;

        }

    candidatePane->SetCandidateBuffer();

    candidatePane->SelectFirstPhrase();

    UpdateIndicator();

    return ETrue;

    }

void TAknFepInputStateCandidateQwertyBaseChinesePhrase::UpdateIndicator()

    {

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();        

    MAknFepUICtrlCandidatePane* candidatePane = uiContainer->CandidatePane();

    if (candidatePane->IsFirstPage())

        {

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

        }

    else

        {

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

        }

   if (candidatePane->IsLastPage())

       {

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

       }

   else

   	   {

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

   	   }

#ifdef RD_INTELLIGENT_TEXT_INPUT

   if(iOwner->FepMan()->KeyboardLayout() == EPtiKeyboardQwerty4x10)

   		{

   	    if(candidatePane->VisibleCandidateCount()==1)

   	    	{

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

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

   	    	}

   	    else

   	    	{

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

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

   	    	}	

   		}

   else

   		{

#endif

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

        candidatePane->IsFirstPage() )

        {

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

        }

    else

        {

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

        }

    if (candidatePane->IsLastPage() && 

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

        {

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

        }

    else

        {

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

        }

    }    

#ifdef RD_INTELLIGENT_TEXT_INPUT

    }    

#endif

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

// TAknFepInputStateCandidateQwertyBaseChinesePhrase::MapKeyToIndexSelectCandidate

// Check the select candidate numeric key is valid or not

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

//

#ifdef RD_INTELLIGENT_TEXT_INPUT

TBool  TAknFepInputStateCandidateQwertyBaseChinesePhrase::MapKeyToIndexSelectCandidate(

    TInt aKey,TInt& aIndex )

    {

    TBool validnumkey = EFalse;

    MPtiLanguage *lang= NULL;

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    TPtiKeyboardType keyboardtype = iOwner->FepMan()->KeyboardLayout();

    if (EPtiKeyboardQwerty4x10 == keyboardtype || EPtiKeyboardQwerty3x11

            == keyboardtype || EPtiKeyboardHalfQwerty == keyboardtype

            || EPtiKeyboardCustomQwerty == keyboardtype)

        {

        RArray <TPtiNumericKeyBinding> keybinding;

        if( ptiengine != NULL )

            {

            lang = ptiengine->CurrentLanguage();

            }

        if ( ptiengine && lang )

            {

            TRAP_IGNORE(ptiengine->GetNumericModeKeysForQwertyL(lang->LanguageCode(), keybinding, keyboardtype));

            TInt numericKeysCount = keybinding.Count();

            while ( numericKeysCount-- )

                {

                TPtiNumericKeyBinding numKeyBind =

                        keybinding[numericKeysCount];

                if ( (numKeyBind.iChar >= 0x31 && numKeyBind.iChar <= 0x36)

                        &&(aKey == numKeyBind.iKey))

                    {

                    aIndex = numKeyBind.iChar - EPtiKey0 - 1;

                    validnumkey = ETrue;

                    break;

                    }

                }

            }

        keybinding.Reset();

        if ( !validnumkey ) 

            {

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

            }       

        }

    else

        {

        aIndex = MapKeyToIndex(aKey);

        }

    return validnumkey ;

    }

#endif

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

// TAknFepInputStateCandidateQwertyBaseChinesePhrase::HandleCommandL

// Handling Command

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

//

void TAknFepInputStateCandidateQwertyBaseChinesePhrase::HandleCommandL(

    TInt aCommandId )

    {

    TAknFepInputStateChineseBase::HandleCommandL( aCommandId );

    }

void TAknFepInputStateCandidateQwertyBaseChinesePhrase::GetNewCandidatesL(const TDesC& aSource, 

                                                    RPointerArray<HBufC>& aList)

    {

    TInt start = 0;

    TInt length = 0;

    for (TInt ii = 0; ii < aSource.Length(); ii++)

        {

        if (aSource[ii] == KSegment)

            {

            TPtrC segment(aSource.Ptr() + start, length);

            aList.AppendL(segment.AllocL());

            start += (length + 1);

            length = 0;

            }

        else

            {

            length++;

            }

        }

    if (length)

        {

        TPtrC segm(aSource.Ptr() + start, length);

        aList.AppendL(segm.AllocL());

        }

    }

// End of file