import com.sun.javafx.runtime.VersionInfo;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.Node;
import javafx.scene.control.Accordion;
import javafx.scene.control.TitledPane;

public class SampleApp extends Application {

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

    @Override
    public void start(Stage stage) throws Exception {
        stage.setTitle(VersionInfo.getRuntimeVersion());
        stage.setScene(createScene());
        stage.show();
    }

    private Scene createScene() {
        HBox root = new HBox();
        Button b1 = new Button("Button 1");
        Button b2 = new Button("Button 2");
        final Node createControl = createControl();
        CheckBox cb = new CheckBox("Focus traversable");
        cb.selectedProperty().addListener(new ChangeListener<Boolean>() {

            @Override
            public void changed(ObservableValue<? extends Boolean> ov, Boolean t, Boolean t1) {
                createControl.setFocusTraversable(t1);
            }
        });

        root.getChildren().addAll(b1, createControl, b2, cb);

        return new Scene(root, 600, 400);
    }

    public Node createControl() {
        TitledPane pane1 = new TitledPane();
        pane1.setGraphic(new javafx.scene.control.Label("title 1\nLong text long text"));
        pane1.setContent(new javafx.scene.shape.Rectangle(100, 40, javafx.scene.paint.Color.SKYBLUE));
        TitledPane pane2 = new TitledPane();
        pane2.setGraphic(new javafx.scene.control.Label("title 2\nLong text long text"));
        pane2.setContent(new javafx.scene.shape.Rectangle(100, 40, javafx.scene.paint.Color.BLUEVIOLET));
        Accordion acc = new Accordion();
        acc.getPanes().addAll(pane1, pane2);
        acc.setExpandedPane(pane2);
        pane2.setAnimated(false);
        acc.setFocusTraversable(false);
        acc.setMinWidth(100);
        return acc;
    }
}