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How to disable a menu item in JavaFX
A menu is a list of options or commands presented to the user, typically menus contain items that perform some action. The contents of a menu are known as menu items and a menu bar holds multiple menus.
In JavaFX a menu is represented by the javafx.scene.control.Menu class, a menu item is represented by the javafx.scene.control.MenuItem class, And, the javafx.scene.control.MenuBar class represents a menu bar.
To create a menu −
Instantiate the Menu class.
Create a required number of menu items by instantiating the MenuItem class.
Add all the menu items to the menu as −
fileMenu.getItems().addAll(item1, item2, item3);
Create a menu bar by instantiating the MenuBar class.
Add all the created menus to the menu bar as −
menuBar.getMenus().addAll(fileMenu, fileList, skin);
Add the menu bar to the scene.
Disabling a MenuItem
The MenuItem class contains a property named visible (boolean), which specifies whether to display the current MenuItem. You can set the value to this property using the setVisible() method.
To disable a particular menu item invoke the setVisible() method on its object by passing the boolean value “false”.
Example
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class DisablingMenuItems extends Application {
@Override
public void start(Stage stage) {
//Creating a menu
Menu fileMenu = new Menu("File");
//Creating menu Items
fileMenu.setMnemonicParsing(true);
MenuItem item1 = new MenuItem("Add Files");
MenuItem item2 = new MenuItem("Start Converting");
MenuItem item3 = new MenuItem("Stop Converting");
MenuItem item4 = new MenuItem("Remove File");
MenuItem item5 = new MenuItem("Exit");
//Adding all the menu items to the menu
fileMenu.getItems().addAll(item1, item2, item3, item4, item5);
//Disabling menu items
item2.setDisable(true);
item3.setDisable(true);
//Creating a menu bar and adding menu to it.
MenuBar menuBar = new MenuBar(fileMenu);
menuBar.setTranslateX(200);
menuBar.setTranslateY(20);
//Setting the stage
Group root = new Group(menuBar);
Scene scene = new Scene(root, 595, 200, Color.BEIGE);
stage.setTitle("Menu Example");
stage.setScene(scene);
stage.show();
}
public static void main(String args[]){
launch(args);
}
}
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