fep/aknfep/src/AknFepUiInputStateCandidateChinese.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 25 May 2010 13:03:44 +0300
branchRCL_3
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Revision: 201019 Kit: 2010121
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/*
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* Copyright (c) 2002-2005 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0""
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:            Implementation of Pinyin phrase predictive Qwerty state
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*
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*/
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// System includes
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#include <PtiEngine.h>                      //CPtiEngine
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// User includes
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#include "AknFepUiInputStateCandidateChinese.h"
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#include "AknFepUiCtrlContainerChinese.h"
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#include "AknFepUIManagerStateInterface.h"  //MAknFepUIManagerStateInterface
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#include "AknFepUICtrlCandidatePane.h"      //MAknFepUICtrlCandidatePane
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#include "AknFepManagerUIInterface.h"       //MAknFepManagerUIInterface
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#include "AknFepManager.h"
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const TInt KMaxCandidateCountFromCore = 6;
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// ---------------------------------------------------------------------------
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// TAknFepInputStateCandidateChinese::
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// TAknFepInputStateCandidateChinese
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// (other items were commented in a header).
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// ---------------------------------------------------------------------------
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//
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TAknFepInputStateCandidateChinese::TAknFepInputStateCandidateChinese(
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                               MAknFepUIManagerStateInterface* aOwner,
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                               MAknFepUICtrlContainerChinese* aUIContainer)
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    :TAknFepInputStateCandidateBase(aOwner, aUIContainer)
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    {
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    iState = ECandidate;
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    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();
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    uiContainer->CandidatePane()->SelectFirst();
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    TBool multiplePages = iOwner->PtiEngine()->MoreCandidatePages();
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    TInt bufLength = iOwner->PtiEngine()->CandidatePage().Length();
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    TBool showHorizontalScrollArrows = multiplePages || bufLength>1;
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    uiContainer->ShowHorizontalScrollArrows(showHorizontalScrollArrows); 
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    uiContainer->ShowVerticalScrollArrows(multiplePages);
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    uiContainer->FocusCandidatePane(ETrue);
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    uiContainer->CandidatePane()->ShowCandidateOrdinals(ETrue);
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    UpdateIndicator();
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    }
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// ---------------------------------------------------------------------------
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// TAknFepInputStateCandidateChinese::
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// HandleKeyL
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// (other items were commented in a header).
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// ---------------------------------------------------------------------------
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//
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TBool TAknFepInputStateCandidateChinese::HandleKeyL(TInt aKey, TKeyPressLength /*aLength*/)
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    {
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    if(aKey==EKeyBackspace)
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        {
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        iOwner->ChangeState(EEntry);
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        return ETrue;
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        }
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    if (aKey == EPtiKeyStar)
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        {
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        iOwner->FepMan()->TryCloseUiL();
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        return EFalse;
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        }   
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    if(!( HandleVerticalNavigation(aKey) || HandleHorizontalNavigation(aKey) ))
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        {
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        // it may be one of the 'valid' numbers..
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        TInt index = MapKeyToIndex(aKey);
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        MAknFepUICtrlCandidatePane* candidatePane = UIContainer()->CandidatePane();
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        if(candidatePane->SelectIndex(index) || aKey == EKeyOK)
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            {
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            TPtrC text = candidatePane->CurrentCandidate();
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            if(text.Length()) 
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                {            
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                MAknFepManagerUIInterface* fepMan = iOwner->FepMan();
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                fepMan->NewCharacterL(text);
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                fepMan->CommitInlineEditL();
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                if (fepMan->IsFlagSet(CAknFepManager::EFlagEditorFull))
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                    {
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                    fepMan->ClearFlag(CAknFepManager::EFlagEditorFull);
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                    iOwner->FepMan()->TryCloseUiL();
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                    }
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                else
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                    {
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                    iOwner->ChangeState(EPredictiveCandidate);
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                    UpdateIndicator();
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                    }
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   113
                }
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parents:
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   114
            else
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parents:
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   115
                {
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parents:
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   116
                // No candidates available. Back to Entry state.
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parents:
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   117
                iOwner->ChangeState(EEntry);
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parents:
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   118
                }
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parents:
diff changeset
   119
            }
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        }
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parents:
diff changeset
   121
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    return ETrue;
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   123
    }  
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parents:
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   124
    
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parents:
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// ---------------------------------------------------------------------------
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// TAknFepInputStateCandidateChinese::
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// HandleHorizontalNavigation
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// (other items were commented in a header).
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// ---------------------------------------------------------------------------
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//
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   131
TBool TAknFepInputStateCandidateChinese::HandleHorizontalNavigation(TInt aKey)
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parents:
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   132
    {
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   133
    MAknFepUICtrlCandidatePane* candidatePane = UIContainer()->CandidatePane();
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   134
    CPtiEngine* ptiengine = iOwner->PtiEngine();
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   135
    TBool response = EFalse;
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parents:
diff changeset
   136
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parents:
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   137
    // Do navigation...
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parents:
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   138
    if (aKey == EKeyLeftArrow)
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parents:
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   139
        {
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parents:
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   140
        if (candidatePane->SelectedIndex() == 0 && 
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parents:
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   141
            ptiengine->NumberOfCandidates() == 0)
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parents:
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   142
            {
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   143
            return ETrue;
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parents:
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   144
            }
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parents:
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   145
        if(!candidatePane->SelectPrev())
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parents:
diff changeset
   146
            {
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parents:
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   147
            ptiengine->PreviousCandidatePage();
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parents:
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   148
            candidatePane->SetCandidateBuffer(ptiengine->CandidatePage());
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parents:
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   149
            candidatePane->SelectLast();
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parents:
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   150
            }
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parents:
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   151
        response = ETrue;
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parents:
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   152
        }
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parents:
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   153
    else if (aKey == EKeyRightArrow)
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parents:
diff changeset
   154
        {
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parents:
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   155
        TInt bufLength = iOwner->PtiEngine()->CandidatePage().Length();
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parents:
diff changeset
   156
        
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parents:
diff changeset
   157
        if (bufLength != KMaxCandidateCountFromCore &&
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parents:
diff changeset
   158
            candidatePane->SelectedIndex() == (bufLength -1))
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parents:
diff changeset
   159
            {
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parents:
diff changeset
   160
			return ETrue;
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parents:
diff changeset
   161
            }
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parents:
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   162
        if(!candidatePane->SelectNext())
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parents:
diff changeset
   163
            {
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parents:
diff changeset
   164
            ptiengine->NextCandidatePage();
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parents:
diff changeset
   165
            candidatePane->SetCandidateBuffer(ptiengine->CandidatePage());
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parents:
diff changeset
   166
            candidatePane->SelectFirst();
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parents:
diff changeset
   167
            }
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parents:
diff changeset
   168
        response = ETrue;
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parents:
diff changeset
   169
        }
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parents:
diff changeset
   170
    
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parents:
diff changeset
   171
    if (response) 
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parents:
diff changeset
   172
        {
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parents:
diff changeset
   173
        UpdateIndicator();
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parents:
diff changeset
   174
        }
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parents:
diff changeset
   175
        
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parents:
diff changeset
   176
    return response;
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parents:
diff changeset
   177
    }
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parents:
diff changeset
   178
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parents:
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   179
// ---------------------------------------------------------------------------
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parents:
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   180
// TAknFepInputStateCandidateChinese::
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parents:
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   181
// HandleVerticalNavigation
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parents:
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   182
// (other items were commented in a header).
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parents:
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   183
// ---------------------------------------------------------------------------
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parents:
diff changeset
   184
//
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parents:
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   185
TBool TAknFepInputStateCandidateChinese::HandleVerticalNavigation(TInt aKey)
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parents:
diff changeset
   186
    {
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parents:
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   187
    CPtiEngine* ptiengine = iOwner->PtiEngine();
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parents:
diff changeset
   188
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parents:
diff changeset
   189
    if (aKey == EKeyDownArrow)
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parents:
diff changeset
   190
        {
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parents:
diff changeset
   191
        if (iOwner->PtiEngine()->CandidatePage().Length() != 
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   192
            KMaxCandidateCountFromCore)
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parents:
diff changeset
   193
            {
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parents:
diff changeset
   194
            return ETrue; 
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parents:
diff changeset
   195
            }
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parents:
diff changeset
   196
        ptiengine->NextCandidatePage();
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parents:
diff changeset
   197
        }
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parents:
diff changeset
   198
    else if (aKey == EKeyUpArrow)
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parents:
diff changeset
   199
        {
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parents:
diff changeset
   200
        if (ptiengine->NumberOfCandidates() == 0)
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parents:
diff changeset
   201
            {
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parents:
diff changeset
   202
            return ETrue;            
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parents:
diff changeset
   203
            }
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parents:
diff changeset
   204
        ptiengine->PreviousCandidatePage();
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parents:
diff changeset
   205
        }
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parents:
diff changeset
   206
    else
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parents:
diff changeset
   207
        {
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parents:
diff changeset
   208
        return EFalse;
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parents:
diff changeset
   209
        }
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parents:
diff changeset
   210
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parents:
diff changeset
   211
    MAknFepUICtrlCandidatePane* candidatePane = UIContainer()->CandidatePane();
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parents:
diff changeset
   212
    candidatePane->SelectFirst();
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parents:
diff changeset
   213
    candidatePane->SetCandidateBuffer(ptiengine->CandidatePage());
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parents:
diff changeset
   214
    UpdateIndicator();
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parents:
diff changeset
   215
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parents:
diff changeset
   216
    return ETrue;
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parents:
diff changeset
   217
    }
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parents:
diff changeset
   218
    
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parents:
diff changeset
   219
// ---------------------------------------------------------------------------
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parents:
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   220
// TAknFepInputStateCandidateChinese::
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parents:
diff changeset
   221
// UpdateIndicator
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parents:
diff changeset
   222
// (other items were commented in a header).
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parents:
diff changeset
   223
// ---------------------------------------------------------------------------
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parents:
diff changeset
   224
//
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parents:
diff changeset
   225
void TAknFepInputStateCandidateChinese::UpdateIndicator()
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parents:
diff changeset
   226
    {
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parents:
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   227
    CPtiEngine* ptiengine = iOwner->PtiEngine();
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parents:
diff changeset
   228
    MAknFepUICtrlContainerChinese* uiContainer = UIContainer();        
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    TInt bufLength = iOwner->PtiEngine()->CandidatePage().Length();
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    MAknFepUICtrlCandidatePane* candidatePane = uiContainer->CandidatePane();
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    if (ptiengine->NumberOfCandidates() == 0)
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        {
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        uiContainer->CandidatePane()->ShowUpScrollArrows(EFalse);    
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        }
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    else
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        {
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        uiContainer->CandidatePane()->ShowUpScrollArrows(ETrue);    
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        }
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    uiContainer->CandidatePane()->ShowDownScrollArrows
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        (bufLength == KMaxCandidateCountFromCore ? ETrue : EFalse);
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    if (candidatePane->SelectedIndex() == 0 && 
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        ptiengine->NumberOfCandidates() == 0)
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        {
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        uiContainer->CandidatePane()->ShowLeftScrollArrows(EFalse);
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        }
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    else
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        {
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        uiContainer->CandidatePane()->ShowLeftScrollArrows(ETrue);
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        }
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    if (bufLength != KMaxCandidateCountFromCore &&
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        candidatePane->SelectedIndex() == (bufLength -1))
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        {
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        uiContainer->CandidatePane()->ShowRightScrollArrows(EFalse);        
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        }
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    else
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        {
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        uiContainer->CandidatePane()->ShowRightScrollArrows(ETrue);
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        }
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    }
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// End of file