How to use

isSelected

method

in

javafx.scene.control.CheckMenuItem

public void onTrackClicks(ActionEvent event) {
  CheckMenuItem item = (CheckMenuItem) event.getSource();
  if (item.isSelected()) {
    //app.getGameScene().addEventHandler(MouseEvent.MOUSE_PRESSED, clickTracker);
  } else {
    //app.getGameScene().removeEventHandler(MouseEvent.MOUSE_PRESSED, clickTracker);
  }
}

  @Override public void invalidated(Observable valueModel) {
    menu112.setVisible(menu113.isSelected());
    System.err.println("MenuItem \"foo\" is now " + (menu112.isVisible() ? "" : "not") + " visible.");
  }
});

public void onShowPosition(ActionEvent event) {
  CheckMenuItem item = (CheckMenuItem) event.getSource();
  FXGL.getSettings().getDevShowPosition().setValue(item.isSelected());
}

public void onShowBBox(ActionEvent event) {
  CheckMenuItem item = (CheckMenuItem) event.getSource();
  FXGL.getSettings().getDevShowBBox().setValue(item.isSelected());
}

});
showRotationFrames.setOnAction(e -> {
  scene3DController.setShowRotationFrames(showRotationFrames.isSelected());
  scene3DController.refreshScene(scene3DController.tracksList);
});