Returns the current query string for this widget.
        
        :return     [(<str> term, <str> operator, <str> value), ..]

def currentQuery( self ):
        """
        Returns the current query string for this widget.
        
        :return     [(<str> term, <str> operator, <str> value), ..]
        """
        widgets = self.lineWidgets()
        output = []
        for widget in widgets:
            output.append(widget.query())
        return output