code: def setEditable(self, state):
          
          self._editable = state
          if state:
              self.setEditTriggers(self.AllEditTriggers)
          else:
              self.setEditTriggers(self.NoEditTriggers)
docs: Sets whether or not the user can edit the items in the list by
          typing.
          
          :param     state | <bool>