import com.sun.javafx.runtime.VersionInfo;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Accordion;
import javafx.scene.control.Button;
import javafx.scene.control.TitledPane;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

/**
 *
 * @author cementovoz
 */
public class JavaFXApplication2 extends Application {
    
    @Override
    public void start(Stage stage) throws Exception {
        final String STYLE = "-fx-border-color:blue;-fx-border-width:15;";
        final Accordion acc1 = createAccordion();
        acc1.setStyle(STYLE);
        final Accordion acc2 = createAccordion();
        acc2.setStyle(STYLE);
        ScheduledExecutorService service = Executors.newScheduledThreadPool(1);
        VBox root = new VBox(20);
        root.setFillWidth(false);
        StackPane p1 = new StackPane();
        StackPane p2 = new StackPane();
        p1.getChildren().add(acc1);
        p2.getChildren().add(acc2);
        root.getChildren().addAll(new Button(), p1, p2);
        Scene scene = new Scene(root, 500, 500);
        stage.setScene(scene);
        stage.show();
        stage.setTitle(VersionInfo.getRuntimeVersion());
    }

    /**
     * The main() method is ignored in correctly deployed JavaFX application.
     * main() serves only as fallback in case the application can not be
     * launched through deployment artifacts, e.g., in IDEs with limited FX
     * support. NetBeans ignores main().
     *
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

    private Accordion createAccordion() {
        TitledPane pane1 = new TitledPane();
        pane1.setText("title 1\nLong text long text");
        pane1.setContent(new Rectangle(100, 40, Color.SKYBLUE));
        pane1.setFocusTraversable(false);
        TitledPane pane2 = new TitledPane();
        pane2.setText("title 2\nLong text long text");
        pane2.setContent(new Rectangle(100, 40, Color.BLUEVIOLET));
        Accordion acc = new Accordion();
        acc.getPanes().addAll(pane1, pane2);
        acc.setExpandedPane(pane2);
        pane2.setAnimated(false);
        pane2.setFocusTraversable(false);
        acc.setFocusTraversable(false);
        return acc;
    }
}