lib/browser/awtUtilities/MessageDialog.java

generic of_nat and of_int functions, and generalization of iszero
and neg

/***************************************************************************
  Title:      awtUtilities/MessageDialog.java
  ID:         $Id$
  Author:     Stefan Berghofer, TU Muenchen
  Copyright   1997  TU Muenchen

  This class defines a dialog window for displaying messages and buttons.
***************************************************************************/

package awtUtilities;

import java.awt.*;
import java.awt.event.*;

public class MessageDialog extends Dialog implements ActionListener {
	String txt;

	public String getText() { return txt; }

	public void actionPerformed(ActionEvent evt) {
		txt = evt.getActionCommand();
		setVisible(false);
	}

	public MessageDialog(Frame parent,String title,String text,String []buttons) {
		super(parent,title,true);
		int i;
		Panel p1=new Panel(),p2=new Panel();
		p1.setLayout(new FlowLayout(FlowLayout.CENTER,0,0));
		p2.setLayout(new FlowLayout());
		setFont(new Font("Helvetica", Font.PLAIN, 14));
		setLayout(new GridLayout(2,1));

		while (true) {
			int pos=text.indexOf(' ');
			if (pos<0) {
				p1.add(new Label(text));
				break;
			} else {
				p1.add(new Label(text.substring(0,pos)));
				if (pos+1==text.length())
					break;
				else
					text=text.substring(pos+1);
			}
		}

		add(p1);add(p2);
		for (i=0;i<buttons.length;i++) {
			Button bt = new Button(buttons[i]);
			p2.add(bt);
			bt.addActionListener(this);
		}
	}
}