import com.sun.javafx.tk.TKPulseListener;
import com.sun.javafx.tk.Toolkit;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.control.ToggleButton;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class ProgressIndicatorAnim extends Application {

    private int tickCount = 0;
    private final TKPulseListener listener = () ->
        System.err.println("pulse: " + (++tickCount));

    @Override public void start(Stage stage) {
        stage.setTitle("ProgressIndicator Animation");

        VBox root = new VBox();
        Scene scene = new Scene(root, 600, 450);

        ProgressIndicator pInd2 = new ProgressIndicator();
        pInd2.setPrefSize(50, 50);
        pInd2.setLayoutX(25);
        pInd2.setLayoutY(40);
        pInd2.setVisible(true);

        ProgressIndicator pInd1 = new ProgressIndicator();
        pInd1.setPrefSize(150, 150);
        pInd1.setLayoutX(200);
        pInd1.setLayoutY(20);
        pInd1.setProgress(0.25f);
        pInd1.setVisible(true);

        Button removeButton = new Button("Remove Progress");
        removeButton.setOnAction(e -> {
            root.getChildren().remove(pInd2);
        });

        ToggleButton toggleProgressButton = new ToggleButton("Toggle Progress");
        toggleProgressButton.setOnAction(e -> {
            if (toggleProgressButton.isSelected()) {
                pInd2.setProgress(1.0);
            } else {
                pInd2.setProgress(-1);
            }
        });

        root.getChildren().addAll(removeButton, toggleProgressButton, pInd1, pInd2);

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

        Toolkit.getToolkit().addSceneTkPulseListener(listener);

    }

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

}