/*

* Copyright (c) 1997-2001 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:

*

*/

#ifndef __EIKFPNE_H__

#define __EIKFPNE_H__

#ifndef __EIKEDWIN_H__

#include <eikedwin.h>

#endif

#ifndef __AKNNUMEDWIN_H__

#include <aknnumed.h>

#endif

/**

* This class presents an editor modifying a real. The decimal place can occur anywhere.

* Exponential notation is allowed. 

* 

* Validation, consisting of a check that the contents are parsable as a number 

* (using TLex::Val()) and a range check, is carried out when PrepareForFocusLossL is called.

* Invalid contents cause a leave of that method.

*

* Value() only returns a value corresponding reliably to the value in the editor after a 

* non-leaving call to PrepareForFocusLossL. 

*

*/

class CEikFloatingPointEditor : public CAknNumericEdwin

	{

public:

	/**

	* C++ constructor

	*/

	IMPORT_C CEikFloatingPointEditor();

	/**

	* 2nd stage constructor

	*/

	IMPORT_C void ConstructL(const TReal& aMin,const TReal& aMax,TInt aTextLimit);

	/**

	* Read out the value from the editor as a Real. Value can only be relied on after 

	* a non-leaving call to PrepareForFocusLossL().

	*

	* @return	Value in the editor	

	*/

	IMPORT_C TReal Value() const;

	/**

	* Read out the value from the editor as a Real. 

	* @return	Validation status of the current value

	*/

	IMPORT_C TValidationStatus GetValueAsReal( TReal& aValue );

	/**

	* Set the value in the editor. 

	*

	* @param aValue pointer to value to set 

	*/

	IMPORT_C void SetValueL(const TReal* aValue);

	/**

	* Set minimum and maximum valid values.

	*

	* @param aMin	TInt minimum value

	* @param aMax	TInt maximum value

	*/

	IMPORT_C void SetMinMax(TReal aMin,TReal aMax);

	/**

	* Get minimum and maximum valid values.

	*

	* @param aMin	TReal& minimum value

	* @param aMax	TReal& maximum value

	*/

	IMPORT_C void GetMinMax(TReal& aMin,TReal& aMax) const;

public: // framework

	/**

	* From resource constructor. Refer to eikon.rh for the FLPTED resource structure 

	*

	* @param	aReader		Resource reader positioned at a FLPTED resource location

	*/

	IMPORT_C virtual void ConstructFromResourceL(TResourceReader& aReader);

	/**

	* Called by framework when focus is being taken off editor. May be called

	* by client code.

	*/

	IMPORT_C virtual void PrepareForFocusLossL();

	/**

	* Sets the input capabilities of the editor

	*/

	IMPORT_C virtual TCoeInputCapabilities InputCapabilities() const;

	/**

	* Specific Key handling for numeric editor

	*/

	IMPORT_C virtual TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);

	/** 

	* Update contents of editor on certain resource change events

	*/

	IMPORT_C virtual void HandleResourceChange(TInt aType);

    /**

    * From CCoeControl.     

    * Handles pointer events

    * @param aPointerEvent     The pointer event.

    */

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

private:

    /**

    * From CAknControl

    */

    IMPORT_C void* ExtensionInterface( TUid aInterface );

private: // from CEikEdwin

		IMPORT_C void Reserved_3();

private:

	TReal iValue;

	TReal iMin;

	TReal iMax;

	TInt iSpare;

	};

/**

* This class presents an editor modifying a real. A fixed number of decimal places is 

* permitted, set by API. Exponential notation is not permitted.

* 

* Validation, consisting of a check that the contents are parsable as a number 

* (using TLex::Val()) and a range check, is carried out when PrepareForFocusLossL is called.

* Invalid contents cause a leave of that method.

*

* Value() only returns a value corresponding reliably to the value in the editor after a 

* non-leaving call to PrepareForFocusLossL. 

*

* All values, defaults, minima and maxima set by API or resource are TInts.  The Real value

* is obtained by dividing by 10^<number of decimal places>  

* 

* The number of characters in the editor is calculated from the number of allowed decimal places.

* TODO but there is a bug - cannot handle + or - signs in front, nor missing leading 0s 

* before the decimal place.

*/

class CEikFixedPointEditor : public CAknNumericEdwin

	{

public:

	/**

	* C++ constructor

	*/

	IMPORT_C CEikFixedPointEditor();

	/**

	* 2nd stage Constructor

	*/

	IMPORT_C void ConstructL(TInt aMin,TInt aMax);

	/**

	* Access the value in the editor. The returned value is multiplied by 10^(decimal places) 

	* before formatting to text in the editor.

	* 

	* The value is reliable only immediately after setting and after a non-leaving call to 

	* PrepareForFocusLossL

	*

	* @return TInt current value in the editor. 

	*/

	IMPORT_C TInt Value() const;

	/**

	* Read out the value from the editor as a integer.

    * @return	Validation status of the current value

	*/

    IMPORT_C TValidationStatus GetValueAsInteger( TInt& aValue );

	/**

	* Set the value in the editor. The passed value is divided by 10^(decimal places) 

	* before formatting to text in the editor.

	*

	* @param TInt* pointer to value to set 

	*/

	IMPORT_C void SetValueL(const TInt* aValue);

	/**

	* Set minimum and maximum valid values.

	*

	* @param aMin	TInt minimum value multiplied by 10^(number of decimal places)

	* @param aMax	TInt maximum value multiplied by 10^(number of decimal places)

	*/

	IMPORT_C void SetMinMax(TInt aMin, TInt aMax);

	/**

	* Get minimum and maximum valid values.

	*

	* @param aMin	TInt& minimum value multiplied by 10^(number of decimal places)

	* @param aMax	TInt& maximum value multiplied by 10^(number of decimal places)

	*/

	IMPORT_C void GetMinMax(TInt& aMin, TInt& aMax) const;

	/**

	* This sets the number of allowed decimal places in the displayed text. The number

	* is also used to set the power of 10 by which all integer values in the API are divided

	* by before use, and the power of 10 by which all displayed values are multiplied by 

	* when turning them into integers.

	* 

	* @param	TInt number of decimal places displayed

	*/

	IMPORT_C void SetDecimalPlaces(TInt aDecimalPlaces);

	/**

	* This returns the number of allowed decimal places in the displayed text. The number

	* is that used to set the power of 10 by which all integer values in the API are divided

	* by before use, and the power of 10 by which all displayed values are multiplied by 

	* when turning them into integers.

	* 

	* @return	TInt number of decimal places displayed

	*/

	IMPORT_C TInt DecimalPlaces() const;

public:	// framework

	/**

	* From resource constructor. Refer to eikon.rh for the FIXPTED resource structure 

	*

	* @param	aReader		Resource reader positioned at FIXPTED resource location

	*/

	IMPORT_C virtual void ConstructFromResourceL(TResourceReader& aReader);

	/**

	* Called by framework when focus is being taken off editor. May be called

	* by client code.

	*/

	IMPORT_C virtual void PrepareForFocusLossL();

	/**

	* Sets the input capabilities of the editor

	*/

	IMPORT_C virtual TCoeInputCapabilities InputCapabilities() const;

	/**

	* Specific Key handling for numeric editor

	*/

	IMPORT_C virtual TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);

	/** 

	* Update contents of editor on certain resource change events

	*/

	IMPORT_C virtual void HandleResourceChange(TInt aType);

    /**

    * From CCoeControl.     

    * Handles pointer events

    * @param aPointerEvent     The pointer event.

    */

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

private:

	/**

	* Calculates the maximum number of characters needed by the editor.  Returned values 

	* is used internally to set CEikEdwin::iTextLimit 

	*/

	TInt RequiredNumberOfCharacters() const;

private:

    /**

    * From CAknControl

    */

    IMPORT_C void* ExtensionInterface( TUid aInterface );

private: // from CEikEdwin

		IMPORT_C void Reserved_3();

private:

	TInt iValue;

	TInt iMin;

	TInt iMax;

	TInt iDecimalPlaces;

	TInt iSpare;

	};

#endif