Java tutorial
/* * Copyright 2006 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package com.google.gwt.examples; import com.google.gwt.core.client.EntryPoint; import com.google.gwt.user.client.Command; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.MenuBar; import com.google.gwt.user.client.ui.RootPanel; public class MenuBarExample implements EntryPoint { public void onModuleLoad() { // Make a command that we will execute from all leaves. Command cmd = new Command() { public void execute() { Window.alert("You selected a menu item!"); } }; // Make some sub-menus that we will cascade from the top menu. MenuBar fooMenu = new MenuBar(true); fooMenu.addItem("the", cmd); fooMenu.addItem("foo", cmd); fooMenu.addItem("menu", cmd); MenuBar barMenu = new MenuBar(true); barMenu.addItem("the", cmd); barMenu.addItem("bar", cmd); barMenu.addItem("menu", cmd); MenuBar bazMenu = new MenuBar(true); bazMenu.addItem("the", cmd); bazMenu.addItem("baz", cmd); bazMenu.addItem("menu", cmd); // Make a new menu bar, adding a few cascading menus to it. MenuBar menu = new MenuBar(); menu.addItem("foo", fooMenu); menu.addItem("bar", barMenu); menu.addItem("baz", bazMenu); // Add it to the root panel. RootPanel.get().add(menu); } }