package org.example;

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;

public class MenuExposeBug {
	public static void main(String[] args) {
		Display display = new Display();
		final Shell shell = new Shell(display);
		shell.setText("MenuTest");
		shell.setLayout(new FillLayout());

		Menu menu = new Menu(shell, SWT.BAR);

		final MenuItem item1 = new MenuItem(menu, SWT.CASCADE);
		item1.setText("Menu1");

		final MenuItem item2 = new MenuItem(menu, SWT.CASCADE);
		item2.setText("Menu2");

		final Menu submenu = new Menu(shell, SWT.DROP_DOWN);
		item1.setMenu(submenu);

		for (int i = 0; i < 3; i++) {
			final MenuItem newItem = new MenuItem(submenu, SWT.NONE);
			newItem.setText("Dispose Item " + i);
			newItem.addListener(SWT.Selection, e -> newItem.dispose());
		}

		final MenuItem newItem1 = new MenuItem(submenu, SWT.NONE);
		newItem1.setText("Dispose SubMenu");
		newItem1.addListener(SWT.Selection, e -> submenu.dispose());

		final MenuItem newItem2 = new MenuItem(submenu, SWT.NONE);
		newItem2.setText("Dispose MenuItem");
		newItem2.addListener(SWT.Selection, e -> item1.dispose());

		shell.setMenuBar(menu);

		shell.pack();
		shell.setSize(400, 250);
		shell.open();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}
		display.dispose();
	}
}