package controls;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.event.EventHandler;
import javafx.scene.chart.AreaChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.input.MouseEvent;
 
public class AdvancedAreaChartSample extends Application {
 
    private void init(Stage primaryStage) {
        Group root = new Group();
        primaryStage.setScene(new Scene(root));
        root.getChildren().add(createChart());
    }
 
    protected AreaChart<Number, Number> createChart() {
        NumberAxis xAxis = new NumberAxis();
        NumberAxis yAxis = new NumberAxis();
        AreaChart<Number,Number> ac = new AreaChart<Number,Number>(xAxis,yAxis);
        // setup chart
        ac.setTitle("Area Chart Example");
        xAxis.setLabel("X Axis");
        yAxis.setLabel("Y Axis");
        // add starting data
        final XYChart.Series<Number,Number> series = new XYChart.Series<Number,Number>();
        series.setName("Data Series 1");
        double x = 0;
        while (x<95) {
            series.getData().add(new XYChart.Data<Number,Number>(x, Math.random()*99));
            x += 5 + (15*Math.random());
        }
        series.getData().add(new XYChart.Data<Number,Number>(99d, Math.random()*99));
        ac.getData().add(series);
        
        ac.setOnMouseClicked(new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent t) {
                // here happens NPE
                series.getData().remove(series.getData().size() - 1);
            }
        });
        
        return ac;
    }
 
    @Override public void start(Stage primaryStage) throws Exception {
        init(primaryStage);
        primaryStage.show();
    }
    
    public static void main(String[] args) { launch(args); }
}