# Copyright 2021 (c) Anna Schumaker.
import tagdb
from gi.repository import GObject

class Selector(GObject.GObject):
    def __init__(self): GObject.GObject.__init__(self)
    def next(self): return None
    def previous(self): return None


class TagdbSelector(Selector):
    def next(self): return tagdb.Stack.next()[0]
    def previous(self): return tagdb.Stack.previous()