package dtl.pkg6269;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.Event;
import javafx.event.EventHandler;
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.control.SeparatorMenuItem;
import javafx.stage.Stage;

/**
 *
 * @author yjoan
 */
public class DTL6269 extends Application {
    
    @Override
    public void start(Stage stage) {
        stage.setTitle("DTL-6269");
        final Scene scene = new Scene(new Group(), 800, 500);

        ///////////////////////////////////////

        final Menu mainMenu = new Menu("Main");
        
        mainMenu.setOnMenuValidation(new EventHandler<Event>() {

            public void handle(Event t) {
                mainMenu.getItems().clear();
                
                for (int i = 1; i < 4; i++) {
                    Menu sectionMenu = new Menu();
                    sectionMenu.setText("menu" + i);
                    sectionMenu.setOnShowing(new EventHandler<Event>() {

                        @Override
                        public void handle(Event t) {
                            System.out.println("sectionMenu handler: do something");
                        }
                    });
                    System.out.println("Adding sectionMenu " + i);
                    mainMenu.getItems().add(sectionMenu);
                    
                    for (int j = 1; j < 7; j++) {
                        MenuItem item = new MenuItem();
                        item.setText("menu item " + j);
                        item.setOnAction(new EventHandler<ActionEvent>() {

                            @Override
                            public void handle(ActionEvent t) {
                                System.out.println("menuItem handler: do something");
                            }
                        });
                        
                        System.out.println("Adding item " + j);
                        sectionMenu.getItems().add(item);
                    }
                }
            }
        });
        
        // If the mainMenu is initialy empty then the onMenuValidation handler
        // set on mainMenu is never called, for some reason.
        mainMenu.getItems().add(new SeparatorMenuItem());

        final MenuBar menuBar = new MenuBar();
        menuBar.getMenus().add(mainMenu);
        menuBar.setUseSystemMenuBar(true);

        final Group root = (Group) scene.getRoot();
        root.getChildren().clear();
        root.getChildren().addAll(menuBar);

        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
    
}