| /******************************************************************************* |
| * 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; |
| |
| /* |
| * Display snippet: use the application system menu when available. |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| * |
| * @since 3.7 |
| */ |
| import static org.eclipse.swt.events.SelectionListener.*; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.layout.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet354 { |
| |
| static MenuItem getItem(Menu menu, int id) { |
| MenuItem[] items = menu.getItems(); |
| for (int i = 0; i < items.length; i++) { |
| if (items[i].getID() == id) return items[i]; |
| } |
| return null; |
| } |
| |
| public static void main(String[] args) { |
| final Display display = new Display(); |
| Shell shell = new Shell(display); |
| shell.setText("Snippet 354"); |
| shell.setLayout(new GridLayout(1, false)); |
| |
| Menu appMenuBar = display.getMenuBar(); |
| if (appMenuBar == null) { |
| appMenuBar = new Menu(shell, SWT.BAR); |
| shell.setMenuBar(appMenuBar); |
| } |
| MenuItem file = new MenuItem(appMenuBar, SWT.CASCADE); |
| file.setText("File"); |
| Menu dropdown = new Menu(appMenuBar); |
| file.setMenu(dropdown); |
| MenuItem exit = new MenuItem(dropdown, SWT.PUSH); |
| exit.setText("Exit"); |
| exit.addSelectionListener(widgetSelectedAdapter(e -> display.dispose())); |
| |
| Listener keyDownFilter = event -> System.out.println("Key event!"); |
| display.addFilter(SWT.KeyDown, keyDownFilter); |
| display.addFilter(SWT.KeyUp, keyDownFilter); |
| |
| ArmListener armListener = e -> System.out.println(e); |
| |
| Menu systemMenu = display.getSystemMenu(); |
| if (systemMenu != null) { |
| systemMenu.addMenuListener(new MenuListener() { |
| @Override |
| public void menuHidden(MenuEvent e) { |
| System.out.println("App menu closed"); |
| } |
| |
| @Override |
| public void menuShown(MenuEvent e) { |
| System.out.println("App menu opened"); |
| } |
| }); |
| |
| MenuItem sysItem = getItem(systemMenu, SWT.ID_QUIT); |
| sysItem.addArmListener(armListener); |
| sysItem.addSelectionListener(widgetSelectedAdapter(e -> System.out.println("Quit selected"))); |
| sysItem = getItem(systemMenu, SWT.ID_HIDE_OTHERS); |
| sysItem.addArmListener(armListener); |
| sysItem.addSelectionListener(widgetSelectedAdapter(e -> { |
| System.out.println("Hide others selected -- and blocked!"); |
| e.doit = false; |
| })); |
| sysItem = getItem(systemMenu, SWT.ID_HIDE); |
| sysItem.addArmListener(armListener); |
| sysItem.addSelectionListener(widgetSelectedAdapter(e -> { |
| System.out.println("Hide selected -- and blocked!"); |
| e.doit = false; |
| })); |
| sysItem = getItem(systemMenu, SWT.ID_PREFERENCES); |
| sysItem.addArmListener(armListener); |
| sysItem.addSelectionListener(widgetSelectedAdapter(e -> System.out.println("Preferences selected"))); |
| sysItem = getItem(systemMenu, SWT.ID_ABOUT); |
| sysItem.addArmListener(armListener); |
| sysItem.addSelectionListener(widgetSelectedAdapter(e -> System.out.println("About selected"))); |
| |
| int prefsIndex = systemMenu.indexOf(getItem(systemMenu, SWT.ID_PREFERENCES)); |
| MenuItem newAppMenuItem = new MenuItem(systemMenu, SWT.CASCADE, prefsIndex + 1); |
| newAppMenuItem.setText("SWT-added item"); |
| newAppMenuItem.setAccelerator(SWT.MOD1 | 'i'); |
| newAppMenuItem.addArmListener(armListener); |
| newAppMenuItem.addSelectionListener(widgetSelectedAdapter(e -> System.out.println("SWT-added item selected"))); |
| Menu subMenu = new Menu(systemMenu); |
| |
| for (int i = 0; i < 4; i++) { |
| MenuItem subItem = new MenuItem(subMenu, SWT.PUSH); |
| subItem.setText("Item " + i); |
| } |
| newAppMenuItem.setMenu(subMenu); |
| } |
| Button b = new Button(shell, SWT.PUSH); |
| b.setText("Test"); |
| shell.pack(); |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| display.dispose(); |
| } |
| } |