javafx菜单的创建

/* * Copyright (c) 2008, 2012 Oracle and/or its affiliates. * All rights reserved. Use is subject to license terms. */import javafx.application.Application;import javafx.scene.Group;import javafx.scene.Scene;import javafx.stage.Stage;import javafx.beans.InvalidationListener;import javafx.beans.Observable;import javafx.beans.value.ChangeListener;import javafx.beans.value.ObservableValue;import javafx.event.ActionEvent;import javafx.event.EventHandler;import javafx.geometry.Pos;import javafx.scene.control.*;import javafx.scene.image.Image;import javafx.scene.image.ImageView;import javafx.scene.input.KeyCombination;import javafx.scene.layout.HBox;import javafx.scene.layout.HBoxBuilder;import javafx.scene.layout.VBox;/* * An example of a menu bar. The example includes use of the system bar, if the * current platform supports a system bar. * * see javafx.scene.control.MenuBar * see javafx.scene.control.Menu * see javafx.scene.control.MenuItem * resource menuInfo.png */public class MenuSample extends Application private final Label sysMenuLabel = new Label(Using System Menu); private void init(Stage primaryStage) Group root = new Group(); primaryStage.setScene(new Scene(root); final String os = System.getProperty(); VBox vbox = new VBox(20); final Label outputLabel = new Label(); final MenuBar menuBar = new MenuBar(); / Options-Submenu 2 submenu MenuItem menu121 = MenuItemBuilder.create().text(Item 1).build(); MenuItem menu122 = MenuItemBuilder.create().text(Item 2).build(); Menu menu12 = MenuBuilder.create().text(Submenu 2).items(menu121, menu122).build(); / Options-Change Text final String change = Change Text, Change Back; final MenuItem menu13 = MenuItemBuilder.create().text(change0).accelerator(KeyCombination.keyCombination(Shortcut+C).build(); menu13.setOnAction(new EventHandler() public void handle(ActionEvent t) menu13.setText(menu13.getText().equals(change0) ? change1 : change0); outputLabel.setText(MenuItem) t.getTarget().getText() + - action called); ); / Options menu Menu menu1 = MenuBuilder.create().text(Options).items( menu12, menu13).build(); menuBar.getMenus().addAll(menu1); if (os != null & os.startsWith(Mac) Menu systemMenuBarMenu = new Menu(MenuBar Options); final CheckMenuItem useSystemMenuBarCB = new CheckMenuItem(Use System Menu Bar); useSystemMenuBarCB.setSelected(true); menuBar.useSystemMenuBarProperty().bind(useSystemMenuBarCB.selectedProperty(); systemMenuBarMenu.getItems().add(useSystemMenuBarCB); menuBar.getMenus().add(systemMenuBarMenu); vbox.getChildren().addAll(menuBar); if (os != null & os.startsWith(Mac) HBox hbox = HBoxBuilder.create().alignment(Pos.CENTER).build(); sysMenuLabel.setStyle(-fx-font-size: 24); hbox.getChildren().add(sysMenuLabel); vbox.getChildren().add(hbox); sysMenuLabel.setVisible(menuBar.getHeight() = 0) ? true : false); menuBar.heightProperty().addListener(new ChangeListener() public void changed(ObservableValue ov, Number t, Number t1) sysMenuLabel.setVisible(menuBar.getHeight() = 0) ? true : false); ); root.getChildren().add(vbox