| /******************************************************************************* |
| * Copyright (c) 2019 Lablicate GmbH and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Christoph Läubrich - Bug 552223 - [cocoa] NPE in Menu._setVisible when clicking a menuitem of a disposed menu |
| *******************************************************************************/ |
| package org.eclipse.swt.tests.cocoa.snippets; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.MenuEvent; |
| import org.eclipse.swt.events.MenuListener; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.events.SelectionListener; |
| 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 Bug_552223_NPE_Menu_setVisible { |
| |
| public static void main(String[] args) { |
| |
| Display display = new Display(); |
| Shell shell = new Shell(display); |
| shell.setText("Bug 552223"); |
| shell.open(); |
| Menu menu = new Menu(shell); |
| MenuItem menuItem = new MenuItem(menu, SWT.NONE); |
| menuItem.setText("If you click me within three seconds everything will be fine"); |
| menuItem.addSelectionListener(new SelectionListener() { |
| |
| @Override |
| public void widgetSelected(SelectionEvent e) { |
| |
| System.out.println("Item was clicked"); |
| } |
| |
| @Override |
| public void widgetDefaultSelected(SelectionEvent e) { |
| |
| } |
| }); |
| menu.addMenuListener(new MenuListener() { |
| |
| @Override |
| public void menuShown(MenuEvent e) { |
| |
| Display.getDefault().timerExec((int)TimeUnit.SECONDS.toMillis(3), () -> { |
| |
| menu.dispose(); |
| System.out.println("The menu is now disposed!"); |
| }); |
| } |
| |
| @Override |
| public void menuHidden(MenuEvent e) { |
| |
| } |
| }); |
| shell.setMenu(menu); |
| while(!shell.isDisposed()) { |
| if(!display.readAndDispatch()) { |
| display.sleep(); |
| } |
| } |
| display.dispose(); |
| } |
| } |