/*

* 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:  drop-down list control

*

*/

#include <peninputgeneralitutnew.rsg>

#include <peninputitutconfig_chinese.rsg>

#include <peninputdropdownlist.h>

#include <coemain.h>

#include <AknFepGlobalEnums.h>

#include <PtiEngine.h>

#include "peninputitutchnuistatepredict.h"

#include "peninputgenericitutuimgrbase.h"

#include "peninputgenericitutdatamgr.h"

#include "peninputgenericitutlayoutcontext.h"

#include "peninputgenericitutconverter.h"

#include "peninputgenericitutwindowmanager.h"

const TInt KInvalidIndex = -1;

CChnItutUiStatePredict* CChnItutUiStatePredict::NewL(CGenericItutUiMgrBase* aOwner)

    {

    CChnItutUiStatePredict* self = new (ELeave) CChnItutUiStatePredict(aOwner);

    CleanupStack::PushL(self);

    self->ConstructL(); 

    CleanupStack::Pop(self);

    return self;

    }

CChnItutUiStatePredict::~CChnItutUiStatePredict()

    {

    }

CChnItutUiStatePredict::CChnItutUiStatePredict(CGenericItutUiMgrBase* aOwner)

                                                          :CGenericItutUiStateBase(aOwner),

                                                           iLastOverlapIdx(KInvalidIndex)

    {

    }

void CChnItutUiStatePredict::OnEntryL()

    {

    HBufC* puncText = NULL;

    switch (iOwner->DataMgr()->InputMode())

        {

        case EPinyin:

            {

            iOwner->DataMgr()->NotifyChangeControlLayout(

                MItutPropertySubscriber::EItutPropertyKeypadResourceId,

                R_FINGER_INPUT_KEYPAD_PINYIN_STANDBY_PREDICT);

            puncText = CCoeEnv::Static()->AllocReadResourceL(R_ITUT_PUNC_PINYIN_ZHUYIN);             

            }

            break;

        case EStroke:

            {

            TInt resID;

            if (iOwner->DataMgr()->InputLanguage() == ELangPrcChinese)

                {

                resID = R_FINGER_INPUT_KEYPAD_STROKE_STANDBY_PREDICT_PRC;

                }

            else

                {

                resID = R_FINGER_INPUT_KEYPAD_STROKE_STANDBY_PREDICT_TRA;

                }

            iOwner->DataMgr()->NotifyChangeControlLayout(

                MItutPropertySubscriber::EItutPropertyKeypadResourceId,

                resID);

            puncText = CCoeEnv::Static()->AllocReadResourceL(R_ITUT_PUNC_STROKE);	

            }

            break;        

        case EZhuyin:

            {

            iOwner->DataMgr()->NotifyChangeControlLayout(

                MItutPropertySubscriber::EItutPropertyKeypadResourceId,

                R_FINGER_INPUT_KEYPAD_ZHUYIN_STANDBY_PREDICT);

            puncText = CCoeEnv::Static()->AllocReadResourceL(R_ITUT_PUNC_PINYIN_ZHUYIN);

            }

            break;        

        default:

            {

            // wrong input mode	

            return;

            }

        }

    // show punc drop list, and set candidates to it

    CleanupStack::PushL( puncText );

    CFepCtrlDropdownList* punclist = 

        static_cast<CFepCtrlDropdownList*>(iOwner->LayoutContext()->Control(ECtrlIdPuncCandsList));

    punclist->Hide(EFalse);

    iOwner->DataMgr()->ClearChnCandidates(EItutPuncCandidates);

    RPointerArray<HBufC>& punccandslist = 

        TItutDataConverter::AnyToRptrArray(iOwner->DataMgr()->RequestData(EChnPuncCandidates));

    TItutDataConverter::ConvertNonPhraseCandidateL(*puncText, punccandslist);

    punclist->SetCandidatesL(punccandslist, CFepCtrlDropdownList::EListNoExpandableWithBubble);

    CleanupStack::PopAndDestroy( puncText );

    // show candidate drop list

    CFepCtrlDropdownList* candlist = 

        static_cast<CFepCtrlDropdownList*>(iOwner->LayoutContext()->Control(ECtrlIdStdCandsList));

    candlist->Hide(EFalse);

    // may need to change resource id of candidte list to predictive, change keypad resource id if need

    iOwner->DataMgr()->NotifyChangeControlLayout(

        MItutPropertySubscriber::EItutPropertyCandidateListResourceId,

        R_AKN_FEP_NORMAL_CAND_DROP_DOWN_LIST);

    }

void CChnItutUiStatePredict::OnExit()

    {

    // hide dropdownlist & reset its status

    CFepCtrlDropdownList* punclist = 

        static_cast<CFepCtrlDropdownList*>(iOwner->LayoutContext()->Control(ECtrlIdPuncCandsList));

    punclist->ResetAndClear(CFepCtrlDropdownList::EListNoExpandable);

    iOwner->DataMgr()->ClearChnCandidates(EItutPuncCandidates);

    punclist->Hide(ETrue);

    CFepCtrlDropdownList* candlist = 

        static_cast<CFepCtrlDropdownList*>(iOwner->LayoutContext()->Control(ECtrlIdStdCandsList));

    candlist->ResetAndClear(CFepCtrlDropdownList::EListExpandable);

    iOwner->DataMgr()->ClearChnCandidates(EItutCandidates);

    candlist->Hide(ETrue);

    //show indicator 

    iOwner->LayoutContext()->Control(ECtrlIdIndicator)->Hide(EFalse);

    // Hide ICF, Backspace, Arrow contrls when exit to avoid flick

    iOwner->LayoutContext()->Control(ECtrlIdICF)->Hide( ETrue );

    iOwner->LayoutContext()->Control(ECtrlIdBackspace)->Hide(ETrue);

    iOwner->LayoutContext()->ShowArrowBtn(0);

    }

TBool CChnItutUiStatePredict::HandleKeyL(TInt aCmd, TInt aKey)

    {

    TInt immode = iOwner->DataMgr()->InputMode();

    if (IsKeyValid(aKey))

        {

        iOwner->SetNumLongPressValid(ETrue);

        iOwner->SetCurrentStateL(CGenericItutUiMgrBase::EStateComposition);

        iOwner->CurrentState()->HandleKeyL(aCmd, aKey);

        return ETrue;

        }

    return EFalse;

    }

CGenericItutUiMgrBase::TUiState CChnItutUiStatePredict::StateType()

    {

    return CGenericItutUiMgrBase::EStatePredict;

    }

TBool CChnItutUiStatePredict::IsKeyValid(TInt aKey)

    {

    TInt immode = iOwner->DataMgr()->InputMode();

    return (immode == EPinyin && aKey >= EPtiKey2 && aKey <= EPtiKey9) ||

           (immode == EStroke && aKey >= EPtiKey1 && aKey <= EPtiKey6) ||

           (immode == EZhuyin && aKey >= EPtiKey0 && aKey <= EPtiKey9);

    }

TBool CChnItutUiStatePredict::HandleCtrlEventL(TInt aEventType, 

                                               CFepUiBaseCtrl* aCtrl, 

                                               const TDesC& aEventData)

    {

    switch (aEventType)

        {

        case EItutCmdCandidateSelected:

            {

            TPtrC buf = aEventData.Left(aEventData.Length() - 1);

            if (aCtrl->ControlId() == ECtrlIdStdCandsList)

                {

                // if press cell on candidate list, set predictive candidates of it

                iOwner->DataMgr()->PtiEngine()->SetPredictiveChineseChar(buf);

                TPtrC cands = iOwner->DataMgr()->PtiEngine()->CandidatePage();

                iOwner->DataMgr()->ClearChnCandidates(EItutCandidates);

                RPointerArray<HBufC>& candslist = TItutDataConverter::AnyToRptrArray(

                    iOwner->DataMgr()->RequestData(EChnCandidates));

                TItutDataConverter::ConvertChnPhraseCandidateL(cands, candslist);

                // remove duplicate punctuation from predict candidate

                RPointerArray<HBufC>& punccandslist = TItutDataConverter::AnyToRptrArray(

                    iOwner->DataMgr()->RequestData(EChnPuncCandidates));

                iLastOverlapIdx = RemoveDuplicateCand(punccandslist,

                                                      candslist,

                                                      0,

                                                      0);

                CFepCtrlDropdownList* canddroplist = 

                    reinterpret_cast<CFepCtrlDropdownList*>(aCtrl);

                canddroplist->SetCandidatesL(candslist, CFepCtrlDropdownList::EListExpandableWithBubble);

                // input pressed candidate

                iOwner->LayoutContext()->SubmitText(buf);

                return ETrue;

                }

            else if (aCtrl->ControlId() == ECtrlIdPuncCandsList)

                {

                // if press cell on punc drop list, input it directly

                iOwner->LayoutContext()->SubmitText(buf);

                return ETrue;

                }

            }

            break;

        case EItutCmdGetNextCandidatePage:

            {

            if (aCtrl->ControlId() == ECtrlIdStdCandsList)

                {

                RPointerArray<HBufC>& candslist = TItutDataConverter::AnyToRptrArray(

                    iOwner->DataMgr()->RequestData(EChnCandidates));

                if (candslist.Count() >= KMaxPredictCandCnt)

                    {

                    return ETrue;

                    }

                // original candidate count before fetch new candidate

                TInt candscnt = candslist.Count();

                if (iOwner->DataMgr()->GetNextPageCandidateL(candslist) == KErrNone)

                    {

                    // remove duplicate punctuation from predict candidate

                    RPointerArray<HBufC>& punccandslist = TItutDataConverter::AnyToRptrArray(

                        iOwner->DataMgr()->RequestData(EChnPuncCandidates));

                    iLastOverlapIdx = RemoveDuplicateCand(punccandslist,

                                                          candslist,

                                                          iLastOverlapIdx + 1,

                                                          candscnt);

                    if (candslist.Count() >= KMaxPredictCandCnt)

                        {

                        candscnt = candslist.Count();

                        for (TInt i = KMaxPredictCandCnt; i < candscnt; i++)

                            {

                            delete candslist[KMaxPredictCandCnt];

                            candslist.Remove(KMaxPredictCandCnt);

                            }

                        }

                    static_cast<CFepCtrlDropdownList*>(aCtrl)->AddCandidatesL(candslist);    

                    }

                return ETrue;    

                }

            }

            break;

        case EItutCmdCandidateExisted:

            {

            if (aCtrl->ControlId() == ECtrlIdStdCandsList)

                {

                RPointerArray<HBufC>& candslist = TItutDataConverter::AnyToRptrArray(

                    iOwner->DataMgr()->RequestData(EChnCandidates));

                if (candslist.Count() >= KMaxPredictCandCnt)

                    {

                    static_cast<CFepCtrlDropdownList*>(aCtrl)->SetFlagCandidateExist(EFalse);

                    }

                else

                    {

                    static_cast<CFepCtrlDropdownList*>(aCtrl)->SetFlagCandidateExist(

                        iOwner->DataMgr()->NextPageCandidateExist());

                    }

                return ETrue;

                }

            }

            break;

        case EEventControlFocusGained:

            {

            if (aCtrl->ControlId() == ECtrlIdICF)

                {

                iOwner->SetCurrentStateL(CGenericItutUiMgrBase::EStateStandby);

                // ui layout may also need to handle this event

                return EFalse;

                }

            }

            break;

        case EEventIcfPointerUpEvent:

        	{

            if (aCtrl->ControlId() == ECtrlIdICF)

                {

                iOwner->SetCurrentStateL(CGenericItutUiMgrBase::EStateStandby);

                // ui layout may also need to handle this event

                return ETrue;

                }

        	}

        	break;

        case EEventRawKeyDownEvent:

        	{

        	}

        	break;

        case EEventRawKeyUpEvent:

        	{

        	}

        	break;

        default:

            break;

        }

    return EFalse;    

    }

TInt CChnItutUiStatePredict::RemoveDuplicateCand(const RPointerArray<HBufC>& aSrc,

                                                 RPointerArray<HBufC>& aTgt,

                                                 TInt aSrcStartIdx,

                                                 TInt aTgtStartIdx)

    {

    TInt lastOverlapIdx = KInvalidIndex;

    // on the assumption that if candidate overlap,

    // it is overlap only once

    TInt srccandcnt = aSrc.Count();

    for (TInt i = aSrcStartIdx; i < srccandcnt; i++)

        {

        for (TInt j = aTgtStartIdx; j < aTgt.Count(); j++)

            {

            if (aTgt[j]->Compare(*(aSrc[i])) == 0)

                {

                lastOverlapIdx = i;

                delete aTgt[j];

                aTgt.Remove(j);

                j--;

                break;

                }

            }

        }

    return lastOverlapIdx;

    }

// End Of File