def __init__(self, tw: Gtk.TreeView, path: Gtk.TreePath,
columns: Iterable[int]) -> None:
super().__init__(1.0)
self.tw = tw
self.frozen = False
self.sig = tw.connect_after("draw", self.on_draw)
self.row = Gtk.TreeRowReference.new(tw.props.model, path)
self.selection = tw.get_selection()
self.columns: List[Gtk.TreeViewColumn] = []
for i in columns:
self.columns.append(self.tw.get_column(i))
