setOnMouseClick JavaFx Region not called - javafx

Question

I have a Region-object inside of a Parent for that I want to set the mouseClick-method like this:
item.getNode().setOnMousePressed(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent me) {
// do something
}
});
The item is derived from Parent and is created like this:
public MyItem(Region node) {
init(node);
}
private void init(Node node) {
getChildren().addAll(node);
}
The problem is that my method handle is never called when I add a Region-object. If I add an ImageView-object the click is received.
Any ideas?

Answer 1

Parent usually calculates it's size according to it's children. Empty parent has size 0.
Take a look at the next example. Note that parent size was set manually and "click" output happens only if you click inside pane (red square):
#Override
public void start(Stage stage) throws Exception {
Pane parent = new Pane();
parent.setStyle("-fx-border-color:red;"); // to see pane's size visually
parent.setOnMouseClicked(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent t) {
System.out.println("click");
}
});
parent.setPrefSize(100, 100); // set size
stage.setScene(new Scene(new Group(parent),300,300));
stage.show();
}