org.eclipse.swt.snippets.Snippet131.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet131.java

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/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Menu example snippet: show a popup menu (wait for it to close)
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 *
 * @since 3.0
 */
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;

public class Snippet131 {
    public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setText("Snippet 131");
        shell.addListener(SWT.MenuDetect, event -> {
            Menu menu = new Menu(shell, SWT.POP_UP);
            MenuItem item = new MenuItem(menu, SWT.PUSH);
            item.setText("Menu Item");
            item.addListener(SWT.Selection, e -> System.out.println("Item Selected"));
            menu.setLocation(event.x, event.y);
            menu.setVisible(true);
            while (!menu.isDisposed() && menu.isVisible()) {
                if (!display.readAndDispatch())
                    display.sleep();
            }
            while (display.readAndDispatch())
                ; // needed, to get the selection event, which is fired AFTER the menu is hidden
            menu.dispose();
        });
        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}