/*

* 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 TAknFepInputStateInitialVietnameseMultitap methods.

*

*/

#include "AknFepUIInputStateInitialVietnameseMultitap.h"

#include "AknFepUIManagerStateInterface.h"      //MAknFepUIManagerStateInterface

#include "AknFepCaseManager.h"

#include "AknFepVietnameseToneManager.h"

#include <uikon.hrh>

#include <PtiEngine.h>

#include <PtiDefs.h>

#include <aknSctDialog.h>

#include <avkon.rsg>

#include "AknFepUiManagerWestern.h"

TAknFepInputStateInitialVietnameseMultitap::

TAknFepInputStateInitialVietnameseMultitap(MAknFepUIManagerStateInterface* aOwner)

:TAknFepInputStateInitialMultitapBase(aOwner)

    {

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    TPtiTextCase caseMode = ptiengine->Case();

    ptiengine->SetCase(caseMode);

    }

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

    {

    TBool bHandled = EFalse;

    MAknFepManagerUIInterface* fepMan = iOwner->FepMan();

    CAknFepUIManagerWestern* uiMan = static_cast<CAknFepUIManagerWestern*>(iOwner);

    CAknFepVietnameseToneManager* toneMgr = uiMan->VietnameseToneManager();

    CPtiEngine* ptiEng = fepMan->PtiEngine();

    toneMgr->SetFepManager(fepMan);

    if (aKey == EPtiKeyStar)

        {

        if (aLength == EShortKeyPress)

            {

            if (!toneMgr->IsLooping())

                {

                // Start looping status

                if (toneMgr->StartToneMarkLooping())

                    {

                    // Save the vowel for undo back deletion

                    toneMgr->SetDeletedVowel(fepMan->PreviousChar());

                    ((CAknFepManager*)fepMan)->RemovePreviousCharacterL();    // remove previous char

                    }

                }

            // Process the interim looping state

            if (toneMgr->IsLooping())

                {

                // Get current tone mark

                TText toneVowel = toneMgr->GetVowelWithToneMark();

                toneMgr->IncrementToneMark();

                TBuf<CAknFepManager::ESingleCharacter> aChr;

                aChr.Append(toneVowel);

                // Update inline character(s)

                fepMan->CancelInlineEdit();

                fepMan->NewCharacterL(aChr);

                // Reset the engine timer so that we can get timer expired message

                // We send the * key, and clear it in the next loop

                ptiEng->ClearCurrentWord();

                ptiEng->AppendKeyPress((TPtiKey)aKey);

                bHandled = ETrue;

                if (fepMan->EditSubmenuInUse())

                    {

                    // Looping tone marks, supress edit-menu.

                    fepMan->SetCcpuFlag(CAknFepManager::ECcpuStateIgnoreStarUp);

                    }

                }

            }

        else if (aLength == ELongKeyPress)

            {

            // Reset the key event so that the TAknFepInputStateInitialMultitapBase will

            // parse this event as a short key event, default reaction is to launch SCT

            aLength = EShortKeyPress;

            if (toneMgr->IsLooping())

                {

                // Remove the previous EShortKeyPress message

                fepMan->CancelInlineEdit();

                toneMgr->StopToneMarkLooping();

                // Undo the backdeletion

                TText bkChr = toneMgr->GetDeletedVowel();

                TBuf<CAknFepManager::ESingleCharacter> aChr;

                aChr.Append(bkChr);

                fepMan->NewCharacterL(aChr);

                fepMan->CommitInlineEditL();

               	if (fepMan->EditSubmenuInUse() && fepMan->IsAbleToLaunchSCT())

        		    {

        		    fepMan->LaunchSpecialCharacterTableL();

        		    return ETrue;

        		    }                         

                }

			else if (fepMan->EditSubmenuInUse())

				{

				aLength = ELongKeyPress;

				}

            }

        }

    // Implementation for the Vietnamese back deletion

    if (aKey == EKeyBackspace)

        {

        TBuf<2> newText;

        // Get the last character from the current editor

        TText prevChar = fepMan->PreviousChar();

        // Judge if the last character needs to be converted

        if ( NeedsVietnameseBkDelSupport(prevChar, newText) )

            {

            // Delete the prev character and send the new character to editor

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

            fepMan->NewCharacterL(newText);

            fepMan->CommitInlineEditL();

			// Stop looping for backspace operation

			if( toneMgr->IsLooping() )

			    {

				toneMgr->StopToneMarkLooping();

				}

            return ETrue;

            }

        else

            {

            if ( prevChar )

                {

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

                }

            else

                {

                return EFalse;

                }

            bHandled = EFalse;

            }

        }

    if( toneMgr->IsKeyLooping( aKey ) )

        {

        if( toneMgr->ToneMarkIndex() !=  KErrNotFound )

            {

            // Get current tone mark

            TText toneVowel;

            if( toneMgr->GetLoopingToneMarkVowel( toneVowel ) )

                {

                // remove two previous chars

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

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

                TBuf<CAknFepManager::ESingleCharacter> aChr;

                aChr.Append(toneVowel);

                // Update inline character(s)

                fepMan->CancelInlineEdit();

                fepMan->NewCharacterL(aChr);

                toneMgr->SetLoopingCombined( ETrue );

                bHandled = ETrue;

                }

            // Reset the engine timer so that we can get timer expired message

            // We send the * key, and clear it in the next loop

            ptiEng->ClearCurrentWord();

            ptiEng->AppendKeyPress((TPtiKey)EPtiKeyStar);

            }

        else

            {

            if( toneMgr->IsLoopingCombined() )

                {

                // remove tone mark

                TBuf<2> newText;

                // Get the last character from the current editor

                TText prevChar = fepMan->PreviousChar();

                // Judge if the last character needs to be converted

                if ( NeedsVietnameseBkDelSupport(prevChar, newText) )

                    {

                    // Delete the prev character and send the new character to editor

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

                    fepMan->NewCharacterL(newText);

                    fepMan->CommitInlineEditL();

                    }

                toneMgr->SetLoopingCombined( EFalse );

                }

            }

        }

    else

        {

        toneMgr->StartKeyLooping( aKey );

        }

    if(!bHandled && toneMgr->IsLooping())

    	{

    	toneMgr->StopToneMarkLooping();

    	}

    return bHandled ? ETrue : TAknFepInputStateInitialMultitapBase::HandleKeyL(aKey, aLength);

    }

void TAknFepInputStateInitialVietnameseMultitap::KeyTimerExpired()

    {

    MAknFepManagerUIInterface* fepMan = iOwner->FepMan();

    CAknFepUIManagerWestern* uiMan = static_cast<CAknFepUIManagerWestern*>(iOwner);

    CAknFepVietnameseToneManager* toneMgr = uiMan->VietnameseToneManager();  

    CPtiEngine* ptiEng = fepMan->PtiEngine();

    // Try commit inline editting and clean up for future input attemps

    TRAP_IGNORE(fepMan->CommitInlineEditL());

    toneMgr->StopToneMarkLooping();

    toneMgr->StopKeyLooping();

    ptiEng->ClearCurrentWord();

    }

TBool TAknFepInputStateInitialVietnameseMultitap::NeedsVietnameseBkDelSupport(

                                         TText aGlyphToDelete, TDes& aNewText)

    {

    TBool needBkDelSupport(EFalse);

    const TInt KMatrixColumn = sizeof(VietToneMatrix) / sizeof(TText) / KNumberOfToneMarks;

    aNewText.Zero();

    // Loop of the ToneMatrix columns starts from 1 because the first column of the ToneMatrix stores the vowels 

    for (TUint i = 1; (i < KMatrixColumn) && (!needBkDelSupport); ++i)

        {

        for (TUint j = 0; j < KNumberOfToneMarks; ++j)

            {

            if (VietToneMatrix[i][j] == aGlyphToDelete)

                {

                needBkDelSupport = ETrue;

                aNewText.Append(VietVowelList[i - 1]);

                break;

                }

            }

        }

    return needBkDelSupport;

    }

// End of file