/***************************************************************************
                          dmsbox.h  -  description
                             -------------------
    begin                : Wed Dec 19 2002
    copyright            : (C) 2001-2002 by Pablo de Vicente
    email                : vicente@oan.es
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef DMSBOX_H
#define DMSBOX_H

#include <klineedit.h>

#include "dms.h"

/**@class dmsBox
	*A KLineEdit which is capable of displaying and parsing angle values
	*flexibly and robustly.  Angle values can be displayed and parsed as 
	*Degrees or Hours.  When displaying a value, it uses a space-delimited
	*triplet of integers representing the degrees, arcminutes, and arcseconds 
	*of the angle (or hours, minutes, seconds).  For example, "-34 45 57".
	*When parsing a value input by the user, it can also understand
	*a number of other formats: 
	*@li colon-delimited fields ("-34:45:57")
	*@li one or two fields ("-35"; "-34 46")
	*@li fields with unit-labels ("-34d 45m 57s")
	*@li floating-point numbers ("-34.76583")
	*
	*@note Inherits KLineEdit.
	*@author Pablo de Vicente
	*@version 1.0
	*/

class dmsBox : public KLineEdit  {
TQ_OBJECT
  
TQ_PROPERTY (bool degType READ degType WRITE setDegType)

public:
	/**Constructor for the dmsBox object.
		*@param parent pointer to the parent TQWidget
		*@param ni the name of the object
		*@param deg if true use deg/arcmin/arcsec; otherwise 
		*           use hours/min/sec.
		*/
	dmsBox(TQWidget *parent, const char *ni=0, bool deg=true);

	/**Destructor (empty)*/
	~dmsBox();

	/**Display an angle using Hours/Min/Sec.
		*@p t the dms object which is to be displayed
		*/
	void showInHours(dms t);
	/**Display an angle using Hours/Min/Sec.  This behaves just 
		*like the above function.  It differs only in the data type of 
		*the argument.
		*@p t pointer to the dms object which is to be displayed
		*/
	void showInHours(const dms *t);

	/**Display an angle using Deg/Arcmin/Arcsec.
		*@p t the dms object which is to be displayed
		*/
	void showInDegrees(dms t);
	/**Display an angle using Deg/Arcmin/Arcsec.  This behaves just 
		*like the above function.  It differs only in the data type of 
		*the argument.
		*@p t pointer to the dms object which is to be displayed
		*/
	void showInDegrees(const dms *t);

	/**Display an angle.  Simply calls showInDegrees(t) or 
		*showInHours(t) depending on the value of deg.
		*@param t the dms object which is to be displayed.
		*@param deg if true, display Deg/Arcmin/Arcsec; otherwise
		*display Hours/Min/Sec.
		*/
	void show(dms t, bool deg=true);
	/**Display an angle.  Simply calls showInDegrees(t) or 
		*showInHours(t) depending on the value of deg.
		*This behaves essentially like the above function.  It
		*differs only in the data type of its argument.
		*@param t the dms object which is to be displayed.
		*@param deg if true, display Deg/Arcmin/Arcsec; otherwise
		*display Hours/Min/Sec.
		*/
	void show(const dms *t,bool deg=true);

	/**Simply display a string.
		*@note JH: Why don't we just use KLineEdit::setText() instead?
		*@param s the string to display (it need not be a valid angle value).
		*/
	void setDMS(TQString s) { setText(s); }

	/**Parse the text in the dmsBox as an angle.  The text may be an integer
		*or double value, or it may be a triplet of integer values (separated by spaces
		*or colons) representing deg/hrs, min, sec.  It is also possible to have two
		*fields.  In this case, if the second field is a double, it is converted
		*to decimal min and double sec.
		*@param deg if true use deg/arcmin/arcsec; otherwise 
		*           use hours/min/sec.
		*@param ok set to true if a dms object was succedssfully created.
		*@return a dms object constructed from the fields of the dmsbox
		*/
	dms createDms(bool deg=true, bool *ok=0);

	/**@return a boolean indicating if object contains degrees or hours
		*/
	bool degType(void) const {return deg;}

	/**@short set the dmsBox to Degrees or Hours
		*@param t if true, the box expects angle values in degrees; otherwise 
		*it expects values in hours
		*/
	void setDegType( bool t );

	/**Clears the KLineEdit
		*/
	void clearFields (void) { setDMS(""); }

protected:
	void focusInEvent( TQFocusEvent *e );
	void focusOutEvent( TQFocusEvent *e );

private slots:
	void slotTextChanged( const TQString &t );

private:
	void setEmptyText();

	int degree, minute, hour;
	double second;
	int second_int, msecond;
	bool deg, EmptyFlag;
	dms degValue;
};

#endif
