-
Notifications
You must be signed in to change notification settings - Fork 219
/
__init__.py
75 lines (53 loc) · 2.36 KB
/
__init__.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import enum
from typing import TYPE_CHECKING, Any, Callable, List
if TYPE_CHECKING:
from .._core import Zeroconf
@enum.unique
class ServiceStateChange(enum.Enum):
Added = 1
Removed = 2
Updated = 3
class ServiceListener:
def add_service(self, zc: 'Zeroconf', type_: str, name: str) -> None:
raise NotImplementedError()
def remove_service(self, zc: 'Zeroconf', type_: str, name: str) -> None:
raise NotImplementedError()
def update_service(self, zc: 'Zeroconf', type_: str, name: str) -> None:
raise NotImplementedError()
class Signal:
__slots__ = ('_handlers',)
def __init__(self) -> None:
self._handlers: List[Callable[..., None]] = []
def fire(self, **kwargs: Any) -> None:
for h in self._handlers[:]:
h(**kwargs)
@property
def registration_interface(self) -> 'SignalRegistrationInterface':
return SignalRegistrationInterface(self._handlers)
class SignalRegistrationInterface:
__slots__ = ('_handlers',)
def __init__(self, handlers: List[Callable[..., None]]) -> None:
self._handlers = handlers
def register_handler(self, handler: Callable[..., None]) -> 'SignalRegistrationInterface':
self._handlers.append(handler)
return self
def unregister_handler(self, handler: Callable[..., None]) -> 'SignalRegistrationInterface':
self._handlers.remove(handler)
return self