Java SE (Java Platform, Standard Edition)

Hi,

I want to synchronize a List<String> with the selected items of a ListView. In the real project, I want to synchronize the selected items of a TreeView and the selected images of a galery (custom control).

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ListView;
import javafx.scene.control.SelectionMode;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class TestBindingsList extends Application {

    @Override
    public void start(Stage stage) throws Exception {
        System.out.println(System.getProperty("java.version"));
        List<String> items = Arrays.asList("One", "Two", "Three");
        ListView<String> listView = new ListView<String>(FXCollections.observableArrayList(items));
        listView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
        listView.getSelectionModel().getSelectedItems().addListener(new ListChangeListener<String>() {
            @Override
            public void onChanged(Change<? extends String> c) {
                System.out.println(c);
            }
        });
        List<String> list = new ArrayList<String>();
        Bindings.bindContent(list, listView.getSelectionModel().getSelectedItems());
        Button btnTest = new Button("Test");
        btnTest.setOnAction(new EventHandler<ActionEvent>() {
            @Override public void handle(ActionEvent e) {
                System.out.println(list);
            }
        });

        VBox vBox = new VBox(8);
        Scene scene = new Scene(vBox);
        vBox.getChildren().addAll(listView, btnTest);
        stage.setScene(scene);
        stage.show();
    }

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

}

In most cases, the program works as expected but sometimes there are some issues.

- For example, when I launch the application and select all the items with Ctrl-A, the event { [One, Two, Three] added at 0,  } is fired so the list of strings contains incorrectly 4 elements [One, Two, Three, One].

- Another example, when selecting all the items (with Shift+End), two events are fired { [One] removed at 0,  } and { [One, Two, Three] added at 0,  }, that's correct. But when I remove the last element with Shift-Up, 3 events are fired  { [Two] removed at 1,  },  { [Three] removed at 2,  } and { [Two] added at 1,  } and an exception is thrown:

java.lang.IndexOutOfBoundsException: toIndex = 3

    at java.util.ArrayList.subListRangeCheck(ArrayList.java:1004)

    at java.util.ArrayList.subList(ArrayList.java:996)

    at com.sun.javafx.binding.ContentBinding$ListContentBinding.onChanged(ContentBinding.java:111)

Any ideas?