/*

* Copyright (c) 2002-2004 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 TAknFepInputStateInitialIndicPhoneticMultitap definition.

*

*/

#ifndef __AKN_FEP_UI_INPUT_STATE_INIT_INDIC_PHONETIC_MULTITAP_H__

#define __AKN_FEP_UI_INPUT_STATE_INIT_INDIC_PHONETIC_MULTITAP_H__

#include "AknFepUIInputStateInitialMultitapBase.h"

/**

*  This class  handles the multitap input for Indic languages.

*  @lib avkonfep.dll

*  @since Series 60 3.1

*/

class TAknFepInputStateInitialIndicPhoneticMultitap : public TAknFepInputStateInitialMultitapBase

    {

public:

    /**

    * 

    * Constructor for TAknFepInputStateInitialIndicPhoneticMultitap.	

    * @since 5.0

    * @return 

    */

    TAknFepInputStateInitialIndicPhoneticMultitap(MAknFepUIManagerStateInterface* aOwner, 

                                                  TInt aLanguage); 

public: //from TAknFepInputStateBase    

    /**

    * 

    * Returns the virama character depending on the input language.	

    * @since 5.0

    * @return Etrue if the Key is handled. 

    */

    TBool HandleKeyL(TInt aKey, TKeyPressLength aLength);

#ifdef RD_HINDI_PHONETIC_INPUT 

    /**

    * 

    * Populates iPhoneticLatinChar to aChar.	

    * @since 5.0

    * @return None. 

    */

    virtual void GetPhoneticLatinChar(TChar& aChar)const;

#endif 

public: //from MptiObserver

    /**

    * 

    * Gets called when PTI Engine's timer expires.	

    * @since 5.0

    * @return 

    */

	void KeyTimerExpired();

	/**

	 * Transliterate the current inputted character to language specific character

	 * of Halant.

	 * @since 5.0

	 * @param Null

	 * @return Null

	 */

private:

	void TransliterateFromLatinL();

	/**

     * Removes Halant added by Phonetic PtiENgine for North Indian Languages.

     * 

     * @since 5.0

     * @param aLanguage- Current Phonetic input language is passed to this function.

     * Engine.

     * @return Nothing

     */

	void RemoveHalantL(TLanguage aLanguage);

	/**

     * Checks wheather the current Phonetic Input Language follows North Indian style of editing. This is necessary for removal

     * of Halant.

     * @since 5.0

     * @param aLanguage- Current Phonetic input language is passed to this function.

     * Engine.

     * @return Returns True if the current language comes under North Indian style of writting.

     */

	TBool IsToRemoveHalantForLanguage(TInt aLanguage);

	/**

	 * Checks if the character has phonetic equivallent to be Transliterated

	 * of Halant.

	 * @since 5.0

	 * @param aChar character to be checked

	 * @return returns ETrue if the character can be transliterated

	 */

	inline TBool IsToTransliterate(TChar& aChar);

	/**

	 * Checks if the current transliterated character can be inputted as per the language rule, if not then Question mark is inputted 

	 * of Halant.

	 * @since 5.0

	 * @param aChar character to be validated for inputting

	 * @return ETrue if the character is allowed

	 */

	TBool ValidatePhoneticInputL(const TDes& aBuf, TLanguage aLanguage);

	/**

	 * Checks if the current inputted character is a fallback rendered character

	 * of Halant.

	 * @since 5.0

	 * @param aChar Character to be checked

	 * @return ETrue is the character is a fallback rendered character

	 */	

	TBool IsInvalidPhoneticCharacter( TUint aChar, TLanguage aLanguage );

	/**

	 * Handels the key timer expiry

	 * of Halant.

	 * @since 5.0

	 * @param Null

	 * @return Null

	 */

	void HandleKeyTimerExpiryL();

	};

#endif //__AKN_FEP_UI_INPUT_STATE_INIT_INDIC_MULTITAP_H__

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