package test;

import java.awt.Dimension;

import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.ProgressBar;
import javafx.scene.control.ProgressBarBuilder;
import javafx.scene.layout.VBox;
import javafx.scene.layout.VBoxBuilder;

import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

public class SwingWithFXProgressbar
{
  public static void main(String[] args)
  {
    SwingUtilities.invokeLater(new Runnable() {
      @Override
      public void run()
      {
        JFrame frame = new JFrame("Swing Window");
        frame.getContentPane().setLayout(new BoxLayout(frame.getContentPane(), BoxLayout.Y_AXIS));    
        frame.getContentPane().add(createFXPanel());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setPreferredSize(new Dimension(800, 100));
        frame.pack();
        frame.setVisible(true);
      }

      private JFXPanel createFXPanel()
      {
        final JFXPanel fxp = new JFXPanel();
        Platform.runLater(new Runnable() {
          @Override
          public void run()
          {
            ProgressBar pb = ProgressBarBuilder.create().prefWidth(600).build(); // indeterminate progressbar
            VBox vb = VBoxBuilder.create().visible(true).children(pb).build(); // high CPU load whether visible or not 
            Group g = new Group(vb);
            Scene s = new Scene(g);
            fxp.setScene(s);
          }
        });
        return fxp;
      }
    });
  }
}