How to listen to ListView scrollevents in JavaFX.

ListViewScrollListener.java

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.ListView;
import javafx.scene.control.ScrollBar;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class ListViewScrollListener extends Application {
  public static void main(String[] args) { launch(args); }
  @Override public void start(Stage primaryStage) {
    ListView<String> listview = new ListView<>(FXCollections.observableArrayList(
      "Orange", "Pear", "Guava", "Pineapple", "Tangerine", "Canaloupe", "Mango", "Banana", "Apple"
    ));

    StackPane layout = new StackPane();
    layout.setStyle("-fx-padding: 10; -fx-background-color: cornsilk; -fx-font-size: 25px;");
    layout.getChildren().add(listview);
    primaryStage.setScene(new Scene(layout, 150, 250));
    primaryStage.show();
    
    for (Node node: listview.lookupAll(".scroll-bar")) {
      if (node instanceof ScrollBar) {
        final ScrollBar bar = (ScrollBar) node;
        bar.valueProperty().addListener(new ChangeListener<Number>() {
          @Override public void changed(ObservableValue<? extends Number> value, Number oldValue, Number newValue) {
            System.out.println(bar.getOrientation() + " " + newValue);
          }
        });
      }
    }
  }
}

This seems to be broken in JavaFX 8

its also completely useless because of the classes ScrollEvent And ScrollToEvent - just use addEventHandler with ScrollToEvent.scrollToTopIndex() and you're good to go, no need to manipulate internal API