Name: icR10030 Date: 05/30/2000



Testcase JDialogTest0010 from jck1.3 test
api/javax_swing/interactive/JDialogTests.html#JDialog fails.
The testcase verifies the behavior of the setLocationRelativeTo()
method for a visible location reference.

The problem is that if south edge of the reference frame is out of screen
the dialog is not located over the reference frame as expected.

The bug is reproduced in linux, solaris and win32 environment.

Linux JDK version:
% java -hotspot -version
java version "1.3.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b07)
Java HotSpot(TM) Client VM (build 1.3.0beta-b04, mixed mode)

======================================================================

Name: ks88420 Date: 08/30/2000


java version "1.3.0beta_refresh"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta_refresh-b09)
Java HotSpot(TM) Client VM (build 1.3.0beta-b07, mixed mode)

When you tell a dialog to setLocationRelativeTo() a window or component under
Linux, after you move that component or window, the dialog shows up in a weird
place. Under fvwm, it nearly never shows up in the right place!
I've also tried setting the Location by hand, with

Rectangle pbounds = parent.getbounds();
Rectangle mybounds = getBounds();
setLocation(pbounds.x + (pbounds.width + mybounds.width) / 2,
            pbounds.y + (pbounds.height + mybounds.height) / 2);

but that gives the same behaviour. Wonder how JOptionPane does that - that code
works, but if you have a convenience method like setLocationRelativeTo(), you
want to use it!
The bug doesn't show under windows - guess that's why JDK1.3 for Linux is still
beta.

Here's some code to show it. Click on the button in the frame, click the dialog
away, then move the frame around and show the dialog again.

---snip---

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class RelativeBug{

    final JFrame jf;
    final JDialog jd;
    JLabel l1;
    JLabel l2;
    JButton b1;
    JButton b2;

    public RelativeBug(){
        jf = new JFrame("RelativeBug");
        l1 = new JLabel("Empty Frame");
        b2 = new JButton("Show Dialog");
        b2.addActionListener(new ActionListener(){
                public void actionPerformed(ActionEvent e){
                    jd.setVisible(true);
                }
            });
        jf.getContentPane().setLayout(new GridLayout(2, 2));
        jf.getContentPane().add(l1);
        jf.getContentPane().add(b2);
        jf.setSize(300, 300);
        jf.setLocation(200, 200);
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jd = new JDialog(jf, true){
                public void setVisible(boolean b){
                    setLocationRelativeTo(jf);
                    super.setVisible(b);
                }
            };
        jd.setTitle("relative?");
        l2 = new JLabel("where am i?");
        b1 = new JButton("Go away!");
        b1.addActionListener(new ActionListener(){
                public void actionPerformed(ActionEvent e){
                    jd.setVisible(false);
                }
            });
        jd.getContentPane().setLayout(new GridLayout(2, 2));
        jd.getContentPane().add(l2);
        jd.getContentPane().add(b1);
        jd.pack();
        jf.setVisible(true);
    }

    public static void main(String[] args){
        new RelativeBug();
    }
}
(Review ID: 108802)
======================================================================