def _watch_dbus(self, obj, *args, **kw):
'''
set self._handler to be called when obj fire signal wrapped
'''
def handler(*args, **kw):
if self.meth is not self._handler:
DbusInterface.store_result(obj, self.meth(obj, *args, **kw))
return self._handler(self._obj, *args, **kw)
if self.iface:
bus_iface = DbusInterface.iface(obj, self.iface)
bus_iface.connect_to_signal(self.meth.__name__,
handler,
dbus_interface=self.iface,
*args, **kw)
else:
bus_obj = DbusInterface.get_bus_obj(obj)
bus_obj.connect_to_signal(self.meth.__name__,
handler,
dbus_interface=DbusInterface.get_bus_iface(obj),
*args, **kw)
