def on_value_changed(self, event):
        if not self._guard & VALUE_FLAG:
            self._guard |= VALUE_FLAG
            try:
                self.declaration.value = self.widget.GetValue()
            finally:
                self._guard &= ~VALUE_FLAG

    #--------------------------------------------------------------------------
    # ProxySlider API
    #--------------------------------------------------------------------------
Test Presenter 'joined' request (A2)
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/wx/wx_slider.py/WxSlider.on_value_changed--crossover with--dataset/ETHPy150Open saltstack/salt/salt/daemons/test/plan/actors.py/TestPresenceJoined.action