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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)