@observe(('date_format', 'calendar_popup'))
    def _update_proxy(self, change):
        # The superclass implementation is sufficient.
        super(DateSelector, self)._update_proxy(change)
An observer which updates the proxy with state change.
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/widgets/date_selector.py/DateSelector._update_proxy