/*

* Copyright (c) 2002 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:    LandmarksUi Content File -    Distance editor for editor/viewer form

*

*/

#ifndef CLmkDistanceEditor_h

#define CLmkDistanceEditor_h

//  INCLUDES

#include "CLmkFloatEditor.h"

#include "landmarks.hrh"

/// FORWARD DECLARATION

class CEikMfneSymbol;

// CLASS DECLARATION

/**

 *  CLmkDistanceEditor extends CLmkFloatEditor's functionality.

 *  Implements both metric and imperial units.

 *  Underlying floating value is just a value, which user inputs.

 *  Its limits depend on current unit.

 *  Number() method returns distance always in meters.

 */

class CLmkDistanceEditor : public CLmkFloatEditor

    {

    public:

        // Constructors and destructor

        /**

         * Create CLmkDistanceEditor object

         * @return newly instantiated object

         */

        CLmkDistanceEditor();

        /**

         * Destructor.

         */

        virtual ~CLmkDistanceEditor();

    	/**

    	 * By default Symbian 2nd phase constructor

         * @param aMinimumValue

         * @param aMaximumValue

         * @param aInitialValue

         * @param aType

    	 */

    	void ConstructL(TReal32 aMinimumValue,

                        TReal32 aMaximumValue,

                        TReal32 aInitialValue);

    public: // From CLmkFloatEditor

        /** Sets value */

	    void SetNumber(TReal aNumber);

        /** Gets value */

	    TReal Number() const;

    protected: // From CLmkFloatEditor

        void HandleCustomFieldChanged(TInt aCustomFieldIndex);

        void HandleEnter();

        void HandleExit();

    protected: // new functions

        enum TDistanceUnit

        	{

        	EUnitNone,

        	EUnitMeters,

        	EUnitKilometers,

        	EUnitFeet,

        	EUnitMiles

        	};

        /** Converts from meters to given units */

        TReal32 MetersToUnits(

            TReal32 aMeters,

            TDistanceUnit aToUnits) const;

        /** Converts from given units to meters */

        TReal32 UnitsToMeters(

            TReal32 aValue,

            TDistanceUnit aFromUnits) const;

        /** Updates min and max limits in editor field according to

         *  current units

         */

        void UpdateValueLimits();

        void SetUnit(TDistanceUnit aUnit);

        TDistanceUnit Unit() const;

        TDistanceUnit DefaultUnit() const;

        void ConstructUnitFieldL();

        void ShowUnits(TBool aVisible);

    private: //data

        TReal   iMinimumValue;

        TReal   iMaximumValue;

        TDistanceUnit iLastUsedUnit;

        // Ref:

        CEikMfneSymbol* iUnitsField;

    };

#endif      // CLmkDistanceEditor_h

// End of File