import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk


class OperationBox(Gtk.VBox):

    def __init__(self, *args, **kwds):
        super().__init__(*args, **kwds)
        self.current_selection=None
        self.init(None)

    def init(self, sel):
        self.current_selection=sel

        if sel: pass
        else: pass