Sets whether or not this combo box is editable.

        :param      state | <bool>

def setEditable(self, state):
        """
        Sets whether or not this combo box is editable.

        :param      state | <bool>
        """
        self._editable = state
        self._hourCombo.setEditable(state)
        self._minuteCombo.setEditable(state)
        self._secondCombo.setEditable(state)
        self._timeOfDayCombo.setEditable(state)