tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug306490_SwingDisposeError.java

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 * Copyright (c) 2018 Red Hat and others. All rights reserved.
 * The contents of this file are made available under the terms
 * of the GNU Lesser General Public License (LGPL) Version 2.1 that
 * accompanies this distribution (lgpl-v21.txt).  The LGPL is also
 * available at http://www.gnu.org/licenses/lgpl.html.  If the version
 * of the LGPL at http://www.gnu.org is different to the version of
 * the LGPL accompanying this distribution and there is any conflict
 * between the two license versions, the terms of the LGPL accompanying
 * this distribution shall govern.
 *
 * Contributors:
 *     Red Hat - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.tests.gtk.snippets;

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JTextArea;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

/*
 * Title: Bug 306490 - [SWT/AWT] SWT and Swing in parallel crashes outside JVM with 'BadWindow' on Swing's dispose()
 * How to run: launch snippet and follow onscreen instructions
 * Bug description: Swing crashes
 * Expected results: Nothing should crash
 * GTK Version(s): N/A
 */
public class Bug306490_SwingDisposeError {

	static void createSwing() {
		JFrame frame = new JFrame("Swing, close me (before or after closing the other window)");
		frame.setBounds(0, 0, 600, 100);

		frame.addWindowListener(new WindowAdapter() { // same bug with using setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE) instead
			@Override
			public void windowClosing(WindowEvent e) {
				e.getWindow().dispose();
				System.out.println("Swing: disposed");
			}
		});

		// remark 1: comment out the following line (do not add textArea) and all works fine
		frame.getContentPane().add(new JTextArea());
		frame.setVisible(true);
	}

	static void createSwt() {
		Display display = new Display();
		Shell shell = new Shell(display, SWT.TITLE);
		shell.setBounds(0, 200, 600, 100);
		shell.open();
		while (!shell.isDisposed())
			if (!display.readAndDispatch())
					display.sleep();

		display.dispose();
		System.out.println("SWT: disposed");
	}

	public static void main(String[] args) throws Exception {
		 //remark 2: change order of following two instantiations and all works fine
		createSwing();
		Thread.sleep(1000);
		new Thread() { @Override
		public void run() {createSwt();} }.start(); // also createSwt() alone doesn't work
	}
}