log.INFO("Oooops, parser returned nothing for category " + category)
                
        # Update treeview/model (if category is still selected)
        log.UI("load columns datamap streams")
        if self.current == category:
            uikit.do(uikit.columns, self.gtk_list, self.datamap, self.prepare(self.streams[category]))
            if y:
                uikit.do(self.gtk_list.scroll_to_point, 0, y)  # scroll to previous position
                uikit.do(self.gtk_list.scroll_to_point, 0, y + 1)   # scroll to previous position, +1 px, because
                # somehow Gtk.TreeView else stumbles over itself when scrolling to the same position the 2nd time

        # set pointer
        self.status("")
        self.status(1.0)

        
    # store current streams data