JavaFX - Info valores gráficos de barrra

GraficoBarra

package br.com.fapce.ugb.util;

import javafx.application.Platform;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Bounds;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.chart.XYChart;
import javafx.scene.text.Text;

/**
 * Auxilia na exibição dos valores no gráficos de barras
 *
 * @author Angelica
 */
public class GraficoBarra {

    private GraficoBarra() {
    }

    /**
     * Informar a barra do grafico no qual deseja exibir os valores
     */
    public static void infoBar(XYChart.Data< String, Number> data) {

        Node node = data.getNode();
        Text texto = new Text(data.getYValue() + "");
        texto.setStyle("-fx-fill: #888; -fx-font-size: 11px;");

        node.parentProperty().addListener((ObservableValue<? extends Parent> obs, Parent old, Parent parent) -> {
            Platform.runLater(() -> {
                if (parent != null) {
                    Group parentGroup = (Group) parent;
                    parentGroup.getChildren().add(texto);
                }
            });
        });

        node.boundsInParentProperty().addListener((ObservableValue<? extends Bounds> obs, Bounds old, Bounds bounds) -> {
            texto.setLayoutX(Math.round(bounds.getMinX() + bounds.getWidth() / 2 - texto.prefWidth(- 1) / 2));
            texto.setLayoutY(Math.round(bounds.getMinY() - texto.prefHeight(- 1) * 0.5));
        });

    }
}

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