Bug 4222

Description of problem:
when a (java) application on a different workspace opens a modal dialog, the focus is 'stolen' and all input goes to the dialog, despite the fact that the current workspace is still shown and the dialog is hidden.

Version-Release number of selected component (if applicable):


How reproducible:
always, see example below

Steps to Reproduce:
1. start (java) application which opens a modal dialog after some time
2. switch workspace
3. wait for dialog to open and focus to be 'stolen'


IMHO it's already dubious that an unfocused application can 'steal' the focus with a modal dialog, but it's completely counter intuitive that it will do this across workspaces (i.e. where you do not even see the app/dialog)

here is a small java example which opens a window, waits 10 seconds, then raises a modal dialog:



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

public class DialogDemo {
	private static Dialog dlg;

	public static void main(String args[]) 
	throws InterruptedException
	{
		Frame window = new Frame("FooBar");
		GraphicsConfiguration gc;

		
		window.setSize(400, 300);
		window.setVisible(true);

		Thread.sleep(10000);

		dlg = new Dialog(window, "Attention", true);

		dlg.setLayout( new FlowLayout() );
		
		Button ok = new Button ("OK");
		ok.addActionListener ( new ActionListener()
		{
			public void actionPerformed( ActionEvent e )
			{
				DialogDemo.dlg.setVisible(false);
			}
		});

		dlg.add( new Label ("Click OK to continue"));
		dlg.add( ok );

		dlg.pack();
		dlg.setVisible(true);

		System.exit(0);
	}
}