Class controller Stage/Window reference

Question

Is there any way of getting the Stage/Window object of an FXML loaded file from the associated class controller?
Particularly, I have a controller for a modal window and I need the Stage to close it.

Answer 1

Hi!
I have a parent FXML-file (no controller added) acting as main frame, which includes several other FXML-files. In one of those included FXML-files, I have added a controller.
So, my setup looks a bit like this...
-> Parent FXML
--> include FXML-file1 + controller attached
--> ...
--> include FXML-file5
Inside that controller, I am trying to access now the stage object in a similar approach like described here. This is when i get the null pointer exception....
public class FXMLfile1Controller {
@FXML
private Button ButtonXYZ;
@FXML
protected void ButtonXYZ_Action(ActionEvent event) {
Stage stage = (Stage)ButtonXYZ.getScene().getWindow();
stage.setIconified(true);
// this doesnt work either....
// stage.close();
Can it be, that the stage-object in the controller is not the same as the stage of the parent/main FXML?