/*

* Copyright (c) 2002-2004 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 TAknFepUiInputStateEntryVietnamesePredictive methods.

*

*/

#include "AknFepUiInputStateEntryVietnamesePredictive.h"

#include "AknFepUIInputStateInitialVietnameseMultitap.h"

#include "AknFepUIManagerStateInterface.h"      //MAknFepUIManagerStateInterface

#include "AknFepCaseManager.h"

#include "AknFepVietnameseToneManager.h"

#include <uikon.hrh>

#include <PtiEngine.h>                          //CPtiEngine

#include <PtiDefs.h>                            //keys

#include <aknSctDialog.h>

#include <avkon.rsg>

#include <AknFep.rsg>

#include "AknFepUiManagerWestern.h"

TAknFepInputStateEntryVietnamesePredictive::

TAknFepInputStateEntryVietnamesePredictive(MAknFepUIManagerStateInterface* aOwner)

: TAknFepInputStateEntryWesternPredictive(aOwner)   

    {

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    if (ptiengine->CurrentLanguage()->LanguageCode() != ELangVietnamese)

        {

        TRAP_IGNORE(ptiengine->ActivateLanguageL(ELangVietnamese));

        }

#ifndef RD_INTELLIGENT_TEXT_INPUT

        MAknFepManagerUIInterface* fepMan = iOwner->FepMan();

        if(fepMan->IsAutoCompleteOn())

    	{

    	   ptiengine->SetInputMode(EPtiEngineWordCompletion);

    	}

    	else

#endif

        {

        ptiengine->SetInputMode(EPtiEnginePredictive);

        }

    }

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

    {

    MAknFepManagerUIInterface* fepMan = iOwner->FepMan();

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    TBool response = ETrue;

    switch (aKey)

        {

    case EPtiKey1: //fall through

    case EPtiKey2:

    case EPtiKey3:

    case EPtiKey4:

    case EPtiKey5:

    case EPtiKey6:

    case EPtiKey7:

    case EPtiKey8:

    case EPtiKey9:

        response = HandleStandardNumericKeysL(aKey, aLength);

        break;

    case EPtiKey0:

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

            {

            fepMan->TryRemoveNoMatchesIndicatorL();

#ifndef RD_INTELLIGENT_TEXT_INPUT

            if(fepMan->IsAutoCompleteOn())

					{

					fepMan->RemoveSuggestedCompletionL();

					}

#endif

            }

        fepMan->UpdateCbaL(NULL);

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

            { 

            if (fepMan->IsCursorAtEndOfWord())

                {            

                fepMan->AddCompoundWordToUdbL();

                }

            fepMan->ClearFlag(CAknFepManager::EFlagCompoundWord);

            }

        ptiengine->CommitCurrentWord();  // commit word after calling TryCloseUiL().

        fepMan->TryCloseUiL();

        response = EFalse;  //pass to initial state to handle key

        break;

    case EKeyLeftArrow: // fall through

    case EKeyRightArrow:

        response = HandleNaviKeysL(aKey, aLength);

        break;    

    case EKeyBackspace:

        response = HandleDeleteKeysL(aKey, aLength);

        break;

    case EPtiKeyStar:

        response = HandleStarKeyL(aLength);

        break;

    case EKeyDownArrow: // Japanese input required

        if (fepMan->IsAbleScrollLatinPredictive())

            {

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

                {

                DoNextMatch();

                }

            else

                {

                response = EFalse;

                }

            }

        else

            {

            response = EFalse;

            }

        break;

    case EKeyUpArrow: // Japanese input required

        if (fepMan->IsAbleScrollLatinPredictive())

            {

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

                {

                DoPreviousMatchL();

                }

            else

                {

                response = EFalse;

                }

            }

        else

            {

            response = EFalse;

            }

        break;

    default:

        response = EFalse;

        break;

        }

    return response;

    }

TBool TAknFepInputStateEntryVietnamesePredictive::HandleStarKeyL(TKeyPressLength aLength)

    {

    MAknFepManagerUIInterface* fepMan = iOwner->FepMan();

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    if (aLength == ELongKeyPress)

        { 

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

            {

            // replace with previous match

            fepMan->TryRemoveNoMatchesIndicatorL();

            iMatchState = EWordMatchStd;

            TPtrC newText = ptiengine->PreviousCandidate();

            fepMan->UpdateInlineEditL(newText, newText.Length());

            }

#ifndef RD_INTELLIGENT_TEXT_INPUT

        	// to rip off suggested completion when SCT is launched

		if(fepMan->IsAutoCompleteOn()) 

			{

			fepMan->RemoveSuggestedCompletionL();	

			}

#endif

       	if (!fepMan->EditSubmenuInUse())

        	{

        	fepMan->LaunchSpecialCharacterTableL();

        	}            

        }

    else 

        {

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

            {

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

                {

                //no more matches

                fepMan->PlaySound(EAvkonSIDWarningTone);

                }

            else if (ptiengine->NumberOfCandidates()<=1)

                { 

                // only one match

                if (iMatchState == EWordMatchFirst || iMatchState == EWordMatchNone)

                    {

                    fepMan->UpdateCbaL(R_AKNFEP_SOFTKEYS_SPELL_EMPTY);

                    iMatchState = EWordMatchLast;

                    }

                }

            else

                { 

                // > 1 match

                if (iMatchState == EWordMatchLast && !(ptiengine->LastEnteredKey() == EPtiKey1))

                    {

                    fepMan->UpdateCbaL(R_AKNFEP_SOFTKEYS_SPELL_PREVIOUS);

                    }

                else if (iMatchState == EWordMatchFirst || iMatchState == EWordMatchNone)

                    {

                    fepMan->UpdateCbaL(R_AKNFEP_SOFTKEYS_EMPTY_PREVIOUS);

                    iMatchState = EWordMatchStd;

                    }

                TPtrC newText = ptiengine->NextCandidate();

           		if(newText.Length() == 1)

           			{

	            	TDigitType digittype = fepMan->LocalDigit();

	                TChar chchar(newText[0]);

	                if(!chchar.IsDigit() || (chchar.IsDigit() && !digittype))

	                	{ 	

	                	fepMan->UpdateInlineEditL(newText, newText.Length());    

    	            	}

	                else 

	                	{

	                	TBuf<1> tempbuf;

	                	switch(digittype)

		                	{

		                	case EDigitTypeDevanagari:

			                	{

			                	chchar = (newText[0] + KLatinToDevanagariDigitsDelta);

	            		    	}

			                	break;	

			                case EDigitTypeArabicIndic:

				                {

			                	chchar = (newText[0] + KLatinToArabicIndicDigitsDelta);

	            		        }

				                break;

		                	case EDigitTypeEasternArabicIndic:

			                	{

			                	chchar = (newText[0] + KLatinToEasternArabicIndicDigitsDelta);

			                	}

		                	}

	            		tempbuf.Append(chchar);				                	

		                fepMan->UpdateInlineEditL(tempbuf, tempbuf.Length());	

	                	}

           			}

           		else 

           			{

           			fepMan->UpdateInlineEditL(newText, newText.Length());	

           			}

                }

            }

        else

            {

  			if (!fepMan->EditSubmenuInUse())

        		{

        		fepMan->LaunchSpecialCharacterTableL();

        		}

            }

        }

    return ETrue;

    }

TBool TAknFepInputStateEntryVietnamesePredictive::HandleDeleteKeysL(TInt aKey, TKeyPressLength /*aLength*/)

    {

    MAknFepManagerUIInterface* fepMan = iOwner->FepMan();

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    if (!(fepMan->IsFlagSet(CAknFepManager::EFlagInsideInlineEditingTransaction)))

        {

        if(fepMan->PreviousChar() == TText(0x0020))      // 0x0020 is space 

        {

        	return EFalse;

        }

        TBuf<CAknFepManager::EMaximumFepWordLength> textToUncommit;

        TBool comsumeKey;

        if (!(fepMan->TryGetTextToUncommitL(textToUncommit, aKey, comsumeKey)))

            {

            // If T9 word length > 32, the navi key is consumed without action.

            // Maybe should navigate inside word.

            return comsumeKey;

            }

        ptiengine->SetCurrentWord(textToUncommit);

		fepMan->ClearFlag(CAknFepManager::EFlagRemoveMatchesMenuItem);           

        if (ptiengine->NumberOfCandidates() <= 1)

        	{

			fepMan->SetFlag(CAknFepManager::EFlagRemoveMatchesMenuItem);           	

        	}        

        fepMan->StartInlineEditL(fepMan->UncommittedText(), textToUncommit, 

                                 textToUncommit.Length(), EFalse);

        }

    if (aKey == EKeyBackspace)

        {

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

            {

            fepMan->TryRemoveNoMatchesIndicatorL();

            fepMan->UpdateCbaL(NULL);

            return ETrue;

            }

        else if (iMatchState != EWordMatchFirst)

            {

            //let FirstWordInSelectionList() reset the CBA

            iMatchState = EWordMatchNone;

            }

        TBuf<2> newText;

        // Get the last character from the current editor

        TText prevChar = fepMan->PreviousChar();

        TBool vowelList = EFalse;

        for (TInt index = 0; index < KNumberOfToneMarks; index ++)

            {

            if (VietToneMatrix[0][index] == prevChar)

                {

                vowelList = ETrue;

                break;

                }

            }

        if (vowelList)

            {

                ((CAknFepManager*)fepMan)->RemovePreviousCharacterL();

            }

        else

            {

            if (prevChar <= 0)

                {

                return EFalse;

                }

            // Judge if the last character needs to be converted

            if ( TAknFepInputStateInitialVietnameseMultitap::NeedsVietnameseBkDelSupport(prevChar,

                                                                                         newText) )

                {

                ((CAknFepManager*)fepMan)->RemovePreviousCharacterL();

                }

            else

                {

                TPtrC  updatedText = ptiengine->DeleteKeyPress();

                if(ptiengine->InputMode() != EPtiEngineWordCompletion && newText.Length())

                	{

                	fepMan->UpdateInlineEditL(updatedText, newText.Length());

                	}

                else

                	{

                	fepMan->UpdateInlineEditL(updatedText, updatedText.Length());	

                	}

                }

            }

		fepMan->ClearFlag(CAknFepManager::EFlagRemoveMatchesMenuItem);           

        if (ptiengine->NumberOfCandidates() <= 1)

        	{

			fepMan->SetFlag(CAknFepManager::EFlagRemoveMatchesMenuItem);           	

        	}

        iOwner->CaseMan()->UpdateCase(EBackspaceEvent);

        fepMan->CloseUiIfWordDeletedL();

        }

    return ETrue;

    }

// End of file