JavaFX: Menu and MenuItem

MenuItem

MenuItem is intended to be used in conjunction with Menu to provide options to users. Following are the sub classes of MenuItem.

a.   CheckMenuItem

b.   ContextMenuItem

c.    CustomMenuItem

d.   MenuItemAdapter

e.   RadioMenuItem

 

Example

MenuItem copyMenuItem = new MenuItem("Copy");

copyMenuItem.setOnAction((event) -> {

         ......

         ......

});

 

Menu

Menu class is used to define a menu control.

 

Can a menu be a submenu of other menu?

Yes

 

Can I place a Menu in a MenuBar?

Yes

 

Example

Menu editMenu = new Menu("Edit");

editMenu.getItems().addAll(copyMenuItem, pasteMenuItem, cutMenuItem, undoMenuItem, selectAllMenuItem);

 

Find the below working application.

 

MenuDemo.java

package com.sample.app.widgets;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.control.RadioMenuItem;
import javafx.scene.control.TextArea;
import javafx.scene.input.KeyCombination;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontPosture;
import javafx.stage.Stage;

public class MenuDemo extends Application {

	private TextArea textArea;
	private int fontSize = 23;
	private String fontName = "Arial";
	private FontPosture fontPosture = FontPosture.REGULAR;

	private MenuItem getFontMenuItem(String fontName, String ctrlKey) {
		MenuItem fontMenuItem = new MenuItem(fontName);
		fontMenuItem.setAccelerator(KeyCombination.keyCombination("Ctrl+" + ctrlKey));

		fontMenuItem.setOnAction((event) -> {
			this.fontName = fontMenuItem.getText();
			textArea.setFont(Font.font(fontName, fontSize));
		});
		return fontMenuItem;

	}

	private MenuItem getSizeMenuItem(int fontSize) {
		MenuItem sizeMenuItem = new MenuItem("" + fontSize);

		sizeMenuItem.setOnAction((event) -> {
			this.fontSize = Integer.valueOf(sizeMenuItem.getText());
			textArea.setFont(Font.font(fontName, fontSize));
		});
		return sizeMenuItem;
	}

	private MenuItem getStyleMenuItem(String style) {
		MenuItem styleMenuItem = new RadioMenuItem("" + style);

		styleMenuItem.setOnAction((event) -> {
			String selectedStyle = styleMenuItem.getText();

			if (FontPosture.REGULAR == FontPosture.valueOf(selectedStyle.toUpperCase())) {
				fontPosture = FontPosture.REGULAR;
			} else {
				fontPosture = FontPosture.ITALIC;
			}

			textArea.setFont(Font.font(fontName, fontPosture, fontSize));
		});
		return styleMenuItem;
	}

	private void addEditMenuItems(Menu editMenu) {
		MenuItem copyMenuItem = new MenuItem("Copy");
		copyMenuItem.setOnAction((event) -> {
			textArea.copy();
		});

		MenuItem pasteMenuItem = new MenuItem("Paste");
		pasteMenuItem.setOnAction((event) -> {
			textArea.paste();
		});

		MenuItem cutMenuItem = new MenuItem("Cut");
		cutMenuItem.setOnAction((event) -> {
			textArea.cut();
		});

		MenuItem undoMenuItem = new MenuItem("Undo");
		undoMenuItem.setOnAction((event) -> {
			textArea.undo();
		});

		MenuItem selectAllMenuItem = new MenuItem("Select All");
		selectAllMenuItem.setOnAction((event) -> {
			textArea.selectAll();
		});

		editMenu.getItems().addAll(copyMenuItem, pasteMenuItem, cutMenuItem, undoMenuItem, selectAllMenuItem);
	}

	@Override
	public void start(Stage primaryStage) throws Exception {

		textArea = new TextArea();
		textArea.setMinWidth(250);
		textArea.setMinHeight(250);
		textArea.setFont(Font.font("Verdana", 20));

		Menu fontMenu = new Menu("Font");
		Menu sizeMenu = new Menu("Size");
		Menu styleMenu = new Menu("Style");
		Menu editMenu = new Menu("Edit");

		fontMenu.getItems().addAll(getFontMenuItem("Arial", "R"), getFontMenuItem("Verdana", "D"),
				getFontMenuItem("Calibri", "B"));

		sizeMenu.getItems().addAll(getSizeMenuItem(12), getSizeMenuItem(16), getSizeMenuItem(20), getSizeMenuItem(30));

		styleMenu.getItems().addAll(getStyleMenuItem("Regular"), getStyleMenuItem("Italic"));

		addEditMenuItems(editMenu);

		MenuBar menuBar = new MenuBar();
		menuBar.getMenus().addAll(fontMenu, sizeMenu, styleMenu, editMenu);

		VBox vBox1 = new VBox();

		VBox vBox2 = new VBox();
		vBox2.getChildren().addAll(textArea);
		vBox2.setPadding(new Insets(30));

		vBox1.getChildren().addAll(menuBar, vBox2);
		vBox1.setStyle("-fx-background-color:lightblue");

		Scene scene = new Scene(vBox1, 600, 500, Color.WHITE);

		primaryStage.setTitle("Menu Demo");
		primaryStage.setScene(scene);
		primaryStage.show();
	}

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

}

 

Output

 

 

Expand each menu, to see list of menu items associated with it.

 

  

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