如何从JavaFX图表中的系列中获取颜色并将其分配给复选框

Question

我编写了一个示例程序，使用JavaFX图表生成随机数量的系列图，但我似乎无法弄清楚如何获取每个图的颜色并将其分配给将用于显示或不显示图表。基本上我想将Checkboxes用作图例，以便我可以禁用标准图例。

以下是完整的程序：

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package testlinechartgraphs;

import java.util.ArrayList;
import java.util.Random;
import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Pos;
import javafx.geometry.Side;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.control.CheckBox;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class TestLineChartGraphs extends Application {

    final static ObservableList<XYChart.Series<Number, Number>> lineChartData = FXCollections.observableArrayList();

    @Override
    public void start(Stage stage) {
        stage.setTitle("Line Chart Sample");
        //defining the axes
        final NumberAxis xAxis = new NumberAxis();
        final NumberAxis yAxis = new NumberAxis();
        xAxis.setLabel("Number of Month");
        Random randomNumbers = new Random();
        ArrayList<Integer> arrayList = new ArrayList<>();

        //creating the chart
        final LineChart<Number, Number> lineChart
                = new LineChart<Number, Number>(xAxis, yAxis);

        lineChart.setTitle("Stock Monitoring, 2010");
        lineChart.setLegendSide(Side.RIGHT);

        int randomCount = randomNumbers.nextInt(14)+1;
        //System.out.println("randomCount = " + randomCount);
        for (int i = 0; i < randomCount; i++) {
            XYChart.Series series = new XYChart.Series();
            series.setName("series_" + i);
            for (int k = 0; k < 20; k++) {
                int x = randomNumbers.nextInt(50);

                series.getData().add(new XYChart.Data(k, x));
            }
            //seriesList.add(series);
            lineChartData.add(series);
        }


        lineChart.setData(lineChartData);

//        final StackPane chartContainer = new StackPane();
//
//        Zoom zoom = new Zoom(lineChart, chartContainer);

//        chartContainer.getChildren()
//                .add(lineChart);

        BorderPane borderPane = new BorderPane();

        //borderPane.setCenter(chartContainer);
        borderPane.setCenter(lineChart);

        borderPane.setBottom(getLegend());
////        
        //Scene scene = new Scene(lineChart, 800, 600);
        Scene scene = new Scene(borderPane, 800, 600);
        //lineChart.getData().addAll(series, series1);

        stage.setScene(scene);
        //scene.getStylesheets().addAll("file:///C:/Users/siphoh/Documents/NetBeansProjects/WiresharkSeqNum/src/fancychart.css");
        //scene.getStylesheets().addAll(getClass().getResource("fancychart.css").toExternalForm());

        stage.show();
    }

    public static Node getLegend() {
        HBox hBox = new HBox();

        for (final XYChart.Series<Number, Number> series : lineChartData) {
            CheckBox checkBox = new CheckBox(series.getName());


            checkBox.setSelected(true);
            checkBox.setOnAction(event -> {
                if (lineChartData.contains(series)) {

                    lineChartData.remove(series);
                } else {
                    lineChartData.add(series);
                }
            });

            hBox.getChildren().add(checkBox);
        }

        hBox.setAlignment(Pos.CENTER);
        hBox.setSpacing(20);
        hBox.setStyle("-fx-padding: 0 10 20 10");

        return hBox;
    }

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

如何在 getLegend（）方法中实现此功能？任何帮助将不胜感激。

谢谢，

佛瑞德