def setTableType(self, tableType):
        """
        Sets the table type associated with this navigator.
        
        :param      tableType | <subclass of orb.Table>
        """
        self.navigator().setTableType(tableType)
        completer = XJoinCompleter(self.navigator().model(), self)
        completer.setCompletionMode(XJoinCompleter.InlineCompletion)
        self.setCompleter(completer)