def _on_right_down(self, event):

        data, id, flags, point = self._unpack_event(event)

        # Did the right click occur on a tree item?
        if data is not None:
            populated, element = data

            # Trait notification.
            self.element_right_clicked = (element, point)

        # Give other event handlers a chance.
        event.Skip()

        return
Called when the right mouse button is clicked on the tree.
dataset/ETHPy150Open enthought/pyface/pyface/viewer/tree_viewer.py/TreeViewer._on_right_down