javafx application name on gnome

Question

I help to develop an application with JavaFX for linux and OSX. On Linux, we cannot have the application name on the gnome top bar. We have the entry point for JavaFX. The window have the good name but on gnome we have something like "com.myApp.javaFXMainClass".

I have the same problem with swing and I was able to correct it with these code :

// Set name in system menubar for Gnome (and Linux)
if (System.getProperty("os.name").toLowerCase().contains("linux")) {
    try {
        Toolkit xToolkit = Toolkit.getDefaultToolkit();
        Field awtAppClassNameField = xToolkit.getClass().getDeclaredField("awtAppClassName");
        awtAppClassNameField.setAccessible(true);
        awtAppClassNameField.set(xToolkit, "MyApp"); 
    } catch (Exception e) {
        // TODO
    }
}

How to do that with JavaFX ?

Answer 1

package test;

import javafx.application.Preloader;
import javafx.stage.Stage;

public class TestPre extends Preloader {
    @Override
    public void start(Stage stage) throws Exception {
        com.sun.glass.ui.Application.GetApplication().setName("app test");
    }   
}


package test;

import java.io.ByteArrayInputStream;
import java.util.Base64;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class Test extends Application {

    @Override
    public void start(Stage primaryStage) {
        Button btn = new Button();
        btn.setText("Say 'Hello World'");
        btn.setOnAction(new EventHandler<ActionEvent>() {

            @Override
            public void handle(ActionEvent event) {
                Test __app = new Test();
                Stage __stage = new Stage();
                __app.start(__stage);
            }
        });

        StackPane root = new StackPane();
        root.getChildren().add(btn);

        Scene scene = new Scene(root, 300, 250);

        String __simage = "iVBORw0K.....";
        ByteArrayInputStream __imgstream = new ByteArrayInputStream(Base64.getDecoder().decode(__simage));
        javafx.scene.image.Image __image = new javafx.scene.image.Image(__imgstream);
        primaryStage.getIcons().add(__image);       

        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        com.sun.javafx.application.LauncherImpl.launchApplication(Test.class, TestPre.class, args);
    }

}

Answer 2

This bug has already been reported here but I couldn't get it working so mt final resort was to create an awt application as a bootstrap to JavaFx and it's working like charm

• Read about Integrating JavaFX into Swing Applications Integrating JavaFX into Swing Applications

Code snippet @gitlab

import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;

import javax.swing.*;
import java.awt.*;
import java.lang.reflect.Field;

public class CustomJavaFxAppName {

    private void display() {
        JFrame f = new JFrame("CustomJavaFxAppName");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JFXPanel jfxPanel = new JFXPanel() {
            @Override
            public Dimension getPreferredSize() {
                return new Dimension(320, 240);
            }
        };
        initJFXPanel(jfxPanel);
        f.add(jfxPanel);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);

    }

    private void initJFXPanel(JFXPanel jfxPanel) {
        Platform.runLater(() -> {
            javafx.scene.control.Label label = new javafx.scene.control.Label(
                System.getProperty("os.name") + " v"
                + System.getProperty("os.version") + "; Java v"
                + System.getProperty("java.version"));
            StackPane root = new StackPane(label);
            Scene scene = new Scene(root);
            jfxPanel.setScene(scene);
        });

        if (System.getProperty("os.name").toLowerCase().contains("linux")) {
            try {
                Toolkit xToolkit = Toolkit.getDefaultToolkit();
                Field awtAppClassNameField = xToolkit.getClass().getDeclaredField("awtAppClassName");
                awtAppClassNameField.setAccessible(true);
                awtAppClassNameField.set(xToolkit, "MyApp");
            } catch (Exception ignored) { }
        }
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new CustomJavaFxAppName()::display);
    }
}