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from gi.repository import Gio from .exitable import ExitableWithAliases import warnings class NameOwner(ExitableWithAliases("unown")): Flags = Gio.BusNameOwnerFlags __slots__ = () def __init__(self, con, name, flags, name_aquired_handler, name_lost_handler): id = Gio.bus_own_name_on_connection(con, name, flags, name_aquired_handler, name_lost_handler) self._at_exit(lambda: Gio.bus_unown_name(id)) class NameWatcher(ExitableWithAliases("unwatch")): Flags = Gio.BusNameWatcherFlags __slots__ = () def __init__(self, con, name, flags, name_appeared_handler, name_vanished_handler): id = Gio.bus_watch_name_on_connection(con, name, flags, name_appeared_handler, name_vanished_handler) self._at_exit(lambda: Gio.bus_unwatch_name(id)) class OwnMixin(object): __slots__ = () NameOwnerFlags = NameOwner.Flags def own_name(self, name, flags=0, name_aquired=None, name_lost=None): """[DEPRECATED] Asynchronously aquires a bus name. Starts acquiring name on the bus specified by bus_type and calls name_acquired and name_lost when the name is acquired respectively lost. To receive name_aquired and name_lost callbacks, you need an event loop. https://github.com/LEW21/pydbus/blob/master/doc/tutorial.rst#setting-up-an-event-loop Parameters ---------- name : string Bus name to aquire flags : NameOwnerFlags, optional name_aquired : callable, optional Invoked when name is acquired name_lost : callable, optional Invoked when name is lost Returns ------- NameOwner An object you can use as a context manager to unown the name later. See Also -------- See https://developer.gnome.org/gio/2.44/gio-Owning-Bus-Names.html#g-bus-own-name for more information. """ warnings.warn("own_name() is deprecated, use request_name() instead.", DeprecationWarning) name_aquired_handler = (lambda con, name: name_aquired()) if name_aquired is not None else None name_lost_handler = (lambda con, name: name_lost()) if name_lost is not None else None return NameOwner(self.con, name, flags, name_aquired_handler, name_lost_handler) class WatchMixin(object): __slots__ = () NameWatcherFlags = NameWatcher.Flags def watch_name(self, name, flags=0, name_appeared=None, name_vanished=None): """Asynchronously watches a bus name. Starts watching name on the bus specified by bus_type and calls name_appeared and name_vanished when the name is known to have a owner respectively known to lose its owner. To receive name_appeared and name_vanished callbacks, you need an event loop. https://github.com/LEW21/pydbus/blob/master/doc/tutorial.rst#setting-up-an-event-loop Parameters ---------- name : string Bus name to watch flags : NameWatcherFlags, optional name_appeared : callable, optional Invoked when name is known to exist Called as name_appeared(name_owner). name_vanished : callable, optional Invoked when name is known to not exist Returns ------- NameWatcher An object you can use as a context manager to unwatch the name later. See Also -------- See https://developer.gnome.org/gio/2.44/gio-Watching-Bus-Names.html#g-bus-watch-name for more information. """ name_appeared_handler = (lambda con, name, name_owner: name_appeared(name_owner)) if name_appeared is not None else None name_vanished_handler = (lambda con, name: name_vanished()) if name_vanished is not None else None return NameWatcher(self.con, name, flags, name_appeared_handler, name_vanished_handler)