/*
    KCalc, a scientific calculator for the X window system using the
    Qt widget libraries, available at no cost at http://www.troll.no

    Copyright (C) 1996 Bernd Johannes Wuebben
                       wuebben@math.cornell.edu

    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.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

*/

#ifndef KCALC_CONST_BUTTON_H_
#define KCALC_CONST_BUTTON_H_

#include <klocale.h>
#include "kcalc_button.h"

struct science_constant;


class KCalcConstButton : public KCalcButton
{
    Q_OBJECT

public:

    KCalcConstButton(QWidget *parent);

    KCalcConstButton(const QString &label, QWidget *parent,
                     const QString &tooltip = QString());

    QString constant() const;

    void setButtonNumber(int num);

    void setLabelAndTooltip();

signals:
    void clicked(int num);

private slots:
    void slotConfigureButton();
    void slotChooseScientificConst(const science_constant &const_chosen);
    void slotClicked();

private:
    void initPopupMenu();

    int button_num_;
};


#endif // KCALC_CONST_BUTTON_H_
