[DrJava] [ drjava-Bugs-2879953 ] Keyboard Focus Problem on Linux

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Bugs item #2879953, was opened at 2009-10-15 15:59
Message generated for change (Tracker Item Submitted) made by nobody
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Category: UI: UNIX-specific
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: Keyboard Focus Problem on Linux

Initial Comment:
I am a huge fan of DrJava, and have been using it in my class for the past
year.  However, I'm running into a significant roadblock, and I was hoping
you might know of a workaround.  When I use DrJava to show a JFrame that
uses keyboard input, the components in that frame never receive those key
presses.  I don't have this problem on any other OS, and I don't have this
problem with any other IDE.  I believe the issue is that Java has a bug in
Linux, that causes the DrJava main window to steal the focus somehow from
other windows.  Since I teach game programming to over 100 students in a
Linux-only lab, this will prevent me from using DrJava, unless you can
point me to a workaround.  Thank you so much for your help!

Dave Feinberg
Assistant Teaching Professor
Carnegie Mellon University


CODE FOR REPRODUCING THE PROBLEM:
(You will not be able to type in the text field if the code is run in
DrJava.)

import javax.swing.*;

public class TestDisplay extends JFrame
{
 public TestDisplay()
 {
   add(new JTextField());
   pack();
   setVisible(true);
 }
}

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=438935&aid=2879953&group_id=44253