/*

* Copyright (c) 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 TAknFepInputStatePredictiveCandidatePhrase methods.

*

*/

#include "AknFepUiInputStatePredictiveCandidatePhrase.h"

#include "AknFepUICtrlCandidatePane.h"

#include "AknFepUiCtrlContainerChinese.h"

#include "AknFepUIManagerStateInterface.h"  //MAknFepUIManagerStateInterface

#include "AknFepManagerUIInterface.h"       //MAknFepManagerUIInterface

#include <PtiEngine.h>                      //CPtiEngine

TAknFepInputStatePredictiveCandidatePhrase::TAknFepInputStatePredictiveCandidatePhrase(

                                MAknFepUIManagerStateInterface* aOwner,

                                MAknFepUICtrlContainerChinese* aUIContainer)

    :TAknFepInputStateCandidateBasePhrase(aOwner, aUIContainer)

    {

    iState = EPredictiveCandidate;

    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();

    // set container window position to follow cursor

    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);    

        }

    uiContainer->FocusCandidatePane(ETrue);

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    MAknFepUICtrlCandidatePane* candidatePane = uiContainer->CandidatePane();

    // for some reason needs to feed back to ptiengine current Chinese phrase just before get the prediction

    TPtrC text = candidatePane->CurrentPhraseCandidate();

    candidatePane->SelectFirstPhrase(); 

    ptiengine->SetPredictiveChineseChar(text);

    TRAPD(ignore,ptiengine->GetChinesePhraseCandidatesL(*(candidatePane->CandidateArray())));

    if (ignore == KErrNone)

        {

        candidatePane->SplitPhraseCandidatesIntoPages(); 

        uiContainer->SetLayout(MAknFepUICtrlContainerChinese::ELayoutCandidate);

        candidatePane->SetCandidateBuffer();

        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);

        candidatePane->ShowCandidateOrdinals(EFalse);

        }

    }

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

    {

    TBool ret = ETrue;

    if(aLength == ELongKeyPress) 

        {

        return ret;

        }

    if(iOwner->IsValidChineseInputKey(aKey))

        {

        CPtiEngine* ptiengine = iOwner->PtiEngine();

        // needs to clear current word for current engine, otherwise buffer is not cleared

        ptiengine->ClearCurrentWord(); 

        ptiengine->ResetToneMark();

        iOwner->ChangeState(EEntry);

        ret = EFalse; //passes to entry state to handle the key

        }

    if(!HandleVerticalNavigation(aKey))

        {

        if (aKey == EKeyLeftArrow || aKey == EKeyRightArrow || aKey == EKeyOK)

            {

            iOwner->ChangeState(EPredictiveInput);

            ret = EFalse; //passes to predictive input state to handle the key

            }

        else if(aKey == EKeyBackspace)

            {

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

            }

        else if (aKey == EPtiKeyStar)

            {

            ret = TAknFepInputStateCandidateBasePhrase::HandleKeyL(aKey, aLength);

            }   

        }

    return ret;

    }

// End of file