def _elementRemovedCb(self, unused_timeline, track_element):
if not isinstance(track_element, GES.BaseEffect) and track_element in self.widgets:
w = self.widgets[track_element]
del self.widgets[track_element]
self.remove_child(self.find_child(w))
Zoomable.removeInstance(w)
def _objectRemovedCb(self, unused_timeline, track_object):
if not isinstance(track_object, GES.TrackEffect) and track_object in self.widgets:
w = self.widgets[track_object]
del self.widgets[track_object]
self.remove_child(self.find_child(w))
Zoomable.removeInstance(w)
