def _selected_changed(self, old, new):
        for i, value in enumerate(self._uis):
            if new == value[1]:
                value[0].activate()
                break
        return

#-------------------------------------------------------------------------------
#  'DockableListElement' class:
#-------------------------------------------------------------------------------
Return the first value received.
dataset/ETHPy150Open enthought/traitsui/traitsui/wx/list_editor.py/NotebookEditor._selected_changed--crossover with--dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/cgi.py/FieldStorage.getfirst