/*

* Copyright (c) 2010 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: Class to hold the character to key mappings for a virtual

*   qwerty keyboard.

*/

#ifndef __CQWERTYKEYMAP_H__

#define __CQWERTYKEYMAP_H__

// INCLUDE FILES

#include "cpcskeymap.h"

#include <QMap>

// FORWARD DECLARATIONS

// CLASS DECLARATION

NONSHARABLE_CLASS(CQwertyKeyMap) : public CPcsKeyMap

	{

	public: // Enums

		enum TQwertyKeyboard

			{

			// How many keys have mappings in the virtual QWERTY keypad.

			// Most languages list 32 keys, some have 36 keys.

			// 4x11 keyboard could have 44 keys.

			EAmountOfKeysInQwertyKeypad = 44

			};

		// These values are used to identify each key in the keyboard.

		enum TKeyId

			{

			// first key at index 0 

			EKeyQ = 0,

			EKeyW,

			EKeyE,

			EKeyR,

			EKeyT,

			EKeyY,

			EKeyU,

			EKeyI,

			EKeyO,

			EKeyP,

			EKeyA, // 10

			EKeyS,

			EKeyD,

			EKeyF,

			EKeyG,

			EKeyH,

			EKeyJ,

			EKeyK,

			EKeyL,

			EKeyZ, // 19

			EKeyX,

			EKeyC,

			EKeyV,

			EKeyB,

			EKeyN,

			EKeyM,

			EKeyColon,

			EKeyDot,

			EKeyDash,	// 28

			EKeyAt,

			EKeyQuote,

			EKeyQuestionMark,

			EKey32,

			EKey33,

			EKey34,

			EKey35,

			EKey36,

			EKey37,

			EKey38,

			EKey39,

			EKey40,

			EKey41,

			EKey42,

			EKey43,

			// Value is KBitsInKeyId amount of 1-bits (i.e. 111111 (binary))

			KPadCharValue = 0x3f

			};

    public: // Constructors and destructor

        /**

         * Two phase construction

         */

        static CQwertyKeyMap* NewL();

        /**

         * Destructor

         */

		virtual ~CQwertyKeyMap();

	public: // From CPcsKeyMap

		virtual const QChar ArrayIndexToMappedChar(TInt aArrayIndex) const;

	private: // From CPcsKeyMap

		virtual TInt ComputeValue(QString aString,

								  TBool aUpperLimit,

								  QString& aValue) const;

	public:

		bool IsValidChar(const QChar aChar) const;

		TInt MapKeyNameToValue(const QChar aKeyName) const;

	private: // Constructors

        /**

         * Constructor

         */

		CQwertyKeyMap();

		/**

		 * Second phase constructor

		 */

		void ConstructL();

	private: // New functions

		void ConstructKeyNameMap();

    private: // Data

		// Mapping between the virtual keys (TKeyId) of the keyboard, and the

		// base character of that key (QChar).

		//

		// TODO: must place QMap's 1st arg the one that used more,

		// since reverse lookup (Qmap::key()) is slow

		QMap<TKeyId, QChar> iKeyNames;

		// List of the valid base characters of the keyboard. Obtained from

		// iKeyNames.

		QList<QChar> iKeyValues;

		// For unit testing

		friend class UT_CQwertyKeyMap;

	};

#endif // __CQWERTYKEYMAP_H__

// End of file