def _kill_focus ( self, event ):
        self._update_text_value( event, False )
        event.Skip()

    #-- Private Methods --------------------------------------------------------
Build choices list runtime using 'sitetree_tree' tag
dataset/ETHPy150Open enthought/traitsui/traitsui/wx/history_control.py/HistoryControl._kill_focus--crossover with--dataset/ETHPy150Open idlesign/django-sitetree/sitetree/fields.py/TreeItemChoiceField._build_choices