/*

* Copyright (c) 2002 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 TAknFepInputStatePredictiveCandidate methods.

*

*/

#include "AknFepUiInputStatePredictiveCandidate.h"

#include "AknFepUICtrlCandidatePane.h"

#include "AknFepUiCtrlContainerChinese.h"

#include "AknFepUIManagerStateInterface.h"  //MAknFepUIManagerStateInterface

#include "AknFepManagerUIInterface.h"       //MAknFepManagerUIInterface

#include <PtiEngine.h>                      //CPtiEngine

TAknFepInputStatePredictiveCandidate::TAknFepInputStatePredictiveCandidate(

                                MAknFepUIManagerStateInterface* aOwner,

                                MAknFepUICtrlContainerChinese* aUIContainer)

    :TAknFepInputStateCandidateBase(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);

    uiContainer->SetLayout(MAknFepUICtrlContainerChinese::ELayoutCandidate);

    CPtiEngine* ptiengine = iOwner->PtiEngine();

    ptiengine->SetCandidatePageLength(MAknFepUICtrlContainerChinese::ELayoutInput);

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

    TPtrC text = uiContainer->CandidatePane()->CurrentCandidate();

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

    ptiengine->SetPredictiveChineseChar(text);

    uiContainer->CandidatePane()->SetCandidateBuffer(ptiengine->CandidatePage());

    TBool multiplePages = ptiengine->MoreCandidatePages();

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

    TBool showHorizontalScrollArrows = multiplePages || bufLength>1;

    uiContainer->ShowVerticalScrollArrows(multiplePages);

    uiContainer->ShowHorizontalScrollArrows(showHorizontalScrollArrows);

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

//  Do standard candidate pane init...

    }

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

    {

    TBool ret = ETrue;

    if(aLength == ELongKeyPress) 

        {

        return ret;

        }

    if(iOwner->IsValidChineseInputKey(aKey))

        {

        CPtiEngine* ptiengine = iOwner->PtiEngine();

        // it is needed when we use phrase input engine, otherwise it seems 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 = TAknFepInputStateCandidateBase::HandleKeyL(aKey, aLength);

            }   

        }

    return ret;

    }

// End of file