/*

* 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:  HWR Engine

*

*/

#ifndef C_CAKNFEPHWRENGINE_H

#define C_CAKNFEPHWRENGINE_H

//  INCLUDES

#include <e32cmn.h>

#include <eikon.hrh>

#include <PtiEngine.h>

class CAknFepHwrBxDataStore;

/**

 *  CAknFepHwrEngine

 *

 *  @lib peninputhwrboxcn.lib

 *  @since S60 v3.2

 */

class CAknFepHwrEngine: public CBase

    {

public:

    /**

     * Symbian constructor.

     *

     * @since S60 v3.2

     * @return Pointer to created CAknFepHwrEngine object

     */

    static CAknFepHwrEngine* NewL(CPtiEngine* aPtiEngine, CAknFepHwrBxDataStore* aOwner);

    /**

     * destructor

     *

     * @since S60 v3.2

     * @return None

     */

    virtual ~CAknFepHwrEngine();

    /**

     * Do recoginize by engine

     *

     * @since S60 v3.2

     * @param aTraceData The trace data.

     * @param aCandidates The candidates recognized.

     * @param aRangeStartPos The range index of candidates.

     * @return None

     */            

    void DoRecognizeL(const RArray<TPoint>& aTraceData, RPointerArray<HBufC>& aCandidates);

    /**

     * Do predictive using trigger string

     *

     * @since S60 v3.2

     * @param aTriggerStr The trigger string to do predictive.

     * @param aPredictives The candidates predictived.

     * @param aNextPage Whether it is to get next page

     * @return None

     */            

    void DoPredictiveL(const TDesC& aTriggerStr, 

                       RPointerArray<HBufC>& aPredictives,

                       TBool aNextPage = EFalse);

    /**

     * Notify hwr engine to set primary range and auxiliary ranges

     *

     * @since S60 v3.2

     * @param aPermittedRanges The permitted ranges and the first range is primary range.

     * @return None

     */

    void SetRanges(const RArray<TInt>& aPermittedRanges);

    /**

     * Set case

     *

     * @since S60 v3.2

     * @param aCase The case

     * @return None

     */            

    void SetCase(TInt aCase);

    /**

     * Set number mode

     *

     * @since S60 v3.2

     * @param aNumberMode Given number mode

     * @return None

     */

    void SetNumberMode(const TAknEditorNumericKeymap& aNumberMode);

    /**

     * Get stroke end mark from hwr engine

     *

     * @since S60 v3.2

     * @return Stroke end mark

     */

    TPoint StrokeEndMark() const ;

    /**

     * Set primary candidate num that hwr engine should return each time

     *

     * @since S60 v3.2

     * @param aNum The primary candidate num to be set

     * @return KErrNone if operation successfully,otherwise system wide error codes

     */

    TInt SetPrimaryCandidateNum(TInt aNum);

    /**

     * Set total candidate number that can be shown

     *

     * @since S60 v3.2

     * @param aNum The total candidate number that should be shown

     * @return KErrNone if operation successfully,otherwise system wide error codes

     */

    TInt SetCandidateNum(TInt aNum);

    /**

     * Set aux candidate number that can be shown

     *

     * @since S60 v3.2

     * @param aNum The aux candidate number that should be shown

     * @return KErrNone if operation successfully,otherwise system wide error codes

     */

    TInt SetAuxCandidateNum(TInt aNum);    

    /**

     * Get aux candidate number that can be shown

     *

     * @since S60 v3.2

     * @return aux candidate number if operation successfully,otherwise system wide error codes

     */

    TInt GetAuxCandidateNum();       

    /**

     * Set language

     *

     * @since S60 v3.2

     * @param aLanguage The language

     * @return None

     */            

    void SetLanguageL(TInt aLanguage);

    /**

     * Set custom key mapping

     *

     * @since S60 v3.2

     * @param aKeyMap The key mapping

     * @return None

     */            

    void SetCustomKeymapL(const TDesC& aKeyMap);

    /**

     * Clear custom key mapping

     *

     * @since S60 v3.2

     * @return None

     */            

    void ResetCustomKeyMap();

    /**

     * Judge if candidate existed in given index

     *

     * @since S60 v3.2

     * @param aIndex Given index

     * @return ETrue if candidate exist, otherwise EFalse

     */            

    TBool CandidateExisted();

    static TInt BackgroundTaskL(TAny* aPtr);

    TInt SetInputAreaSize(TSize& aSize);

    TInt SetScreenSize(TSize& aSize);

private:

    /**

     * C++ constructor

     *

     * @since S60 v3.2

     * @return None

     */            

    CAknFepHwrEngine();

    /**

     * Second phase constructor

     *

     * @since S60 v3.2

     * @return None

     */

    void ConstructL(CPtiEngine* aPtiEngine, CAknFepHwrBxDataStore* aOwner);

    /**

     * Notify hwr engine to set correct range by language

     *

     * @since S60 v3.2

     * @param aRange Current range need to be set

     * @param aRecognitionRange Recognition range need to be set for hwr engine

     * @return None

     */

    void SetRecognitionRange(const TInt aRange, TRecognitionRange& aRecognitionRange);

    void DoIdleConstructL();

    /**

     * Convert the stroke end mark of point array to another point

     *

     * @since S60 v3.2

     * @param aTraceData Point array

     * @param aPnt1 Stroke end mark to be replaced

     * @param aPnt2 Stroke end mark to be used

     * @return None

     */

    void ConvertStrokeEndMark(RArray<TPoint>& aTraceData, TPoint aPnt1, TPoint aPnt2);

private: //data

    /**

     * Engine

     * Ownership is determined by flag

     */

    CPtiEngine* iPtiEngine;

    /**

     * iPtiEngine ownership flag

     */

    TBool iOwnPtiEngine;

    /**

     * Hwr recognizer (Now own)

     */

    MPtiHwrRecognizer* iRecognizer;

    /**

     * Total candidate number that can be shown

     */

    TInt iTotalCandidateNum;

    /**

     * Current case

     */

    TInt iCase;

    /**

     * Current language

     */

    TInt iLanguage;

    /**

     * Range count

     */

    TInt iRangeCount;

    /**

     * Premary range

     */

    TInt iPremaryRange;

    /**

     * Custom key mapping

     */

    HBufC* iCustomKeymap;

    CIdle* iIdle;

    TBool iRecognizerInited;

    /**

     * Data store (Not own)

     */

    CAknFepHwrBxDataStore* iOwner;

    TBool iNeedSetNumberMode;

    TBool iNeedSetCase;

    TBool iNeedSetRange;

    RArray<TInt> iPermittedRanges;

    TInt iNumberMode;

    };

#endif //C_CAKNFEPHWRENGINE_H

//End Of File