Handle event on CheckListView of Controls FX - javafx

Question

I try to work with Controls FX and the Check List View component, but I have several issues on how to use it :
By default, cell are not selected when I add item in the CheckListView, how can I do to have it selected by default ? I think I have to use setCheckModel but I'm lost.
How can I handle an event when someone click on a checkBox ? I don't know what to do, because event that I handle are on the node but not on the checkBox. I don't understand how to use the eventHandler with this component.
EDIT :
Here's what I do :
departureCheckListView.setItems(myListAirport.getObservableDepartureAirtport());
departureCheckListView.getItems().addListener(new ListChangeListener<String>() {
#Override
public void onChanged(Change<? extends String> c) {
c.next();
if (c.wasAdded()) {
System.out.println(c.getAddedSubList().get(0));
//departureCheckListView.getSelectionModel().select(c.getAddedSubList().get(0));
Platform.runLater(new Runnable() {
#Override
public void run() {
departureCheckListView.getCheckModel().check(c.getAddedSubList().get(0));
}
});
}
}
});
The first item that I add is checked, but the followed items.
I don't know if this could helps, but my list is sorted.

Answer 1

For your first case, use a Listener on the List of Items in the CheckListView, to check if an item is added to it or nor, then, use the getSelectionModel().select(<Item>) to select it.
checkListView.getItems().addListener(new ListChangeListener<String>() {
#Override
public void onChanged(Change<? extends String> c) {
c.next();
if (c.wasAdded()) {
checkListView.getSelectionModel().select(c.getAddedSubList().get(0));
}
}
});
For the second case, use getCheckModel().getCheckedItems() to get the List of Items that have checked values. Similarly, check if a an item has been added / removed from the list.
checkListView.getCheckModel().getCheckedItems().addListener(new ListChangeListener<String>() {
#Override
public void onChanged(ListChangeListener.Change<? extends String> c) {
c.next();
if(c.wasAdded()) {
System.out.println("Item Checked : " + c.getAddedSubList().get(0));
} else if (c.wasRemoved()) {
System.out.println("Item Unchecked : " + c.getRemoved().get(0));
}
}
});
Complete MCVE - Tested with ControlsFX - 8.40.9
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import org.controlsfx.control.CheckListView;
public class Main extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) throws Exception {
final ObservableList<String> listOfItems = FXCollections.observableArrayList();
for (int i = 0; i <= 100; i++) {
listOfItems.add("Item " + i);
}
final CheckListView<String> checkListView = new CheckListView<>(listOfItems);
// Select the first checkListView element
checkListView.getItems().addListener(new ListChangeListener<String>() {
#Override
public void onChanged(Change<? extends String> c) {
c.next();
if (c.wasAdded()) {
checkListView.getSelectionModel().select(c.getAddedSubList().get(0));
}
}
});
// On CheckBox event
checkListView.getCheckModel().getCheckedItems().addListener(new ListChangeListener<String>() {
#Override
public void onChanged(ListChangeListener.Change<? extends String> c) {
c.next();
if(c.wasAdded()) {
System.out.println("Item Checked : " + c.getAddedSubList().get(0));
} else if (c.wasRemoved()) {
System.out.println("Item Unchecked : " + c.getRemoved().get(0));
}
}
});
Button button = new Button("Add");
button.setOnAction(e -> {
checkListView.getItems().add(0, "Itachi");
checkListView.requestFocus();
});
Scene scene = new Scene(new VBox(checkListView, button), 300, 275);
primaryStage.setTitle("Welcome");
primaryStage.setScene(scene);
primaryStage.show();
}
}
Update : For checking the new added item check-box, instead of selecting
Use :
checkListView.getCheckModel().check(c.getAddedSubList().get(0));
instead of
checkListView.getSelectionModel().select(c.getAddedSubList().get(0));
If you want it to be checked and at the same time selected, you can use both of them.