mirror of
https://github.com/python-telegram-bot/python-telegram-bot.git
synced 2024-11-22 23:27:49 +01:00
102 lines
4.2 KiB
Python
102 lines
4.2 KiB
Python
#!/usr/bin/env python
|
|
#
|
|
# A library that provides a Python interface to the Telegram Bot API
|
|
# Copyright (C) 2015-2022
|
|
# Leandro Toledo de Souza <devs@python-telegram-bot.org>
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Lesser Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program 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 Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser Public License
|
|
# along with this program. If not, see [http://www.gnu.org/licenses/].
|
|
"""This module contains the ChatMemberHandler classes."""
|
|
from typing import ClassVar, TypeVar, Union, Callable
|
|
|
|
from telegram import Update
|
|
from telegram.ext import Handler
|
|
from telegram._utils.defaultvalue import DefaultValue, DEFAULT_FALSE
|
|
from telegram.ext._utils.types import CCT
|
|
|
|
RT = TypeVar('RT')
|
|
|
|
|
|
class ChatMemberHandler(Handler[Update, CCT]):
|
|
"""Handler class to handle Telegram updates that contain a chat member update.
|
|
|
|
.. versionadded:: 13.4
|
|
|
|
Warning:
|
|
When setting :paramref:`run_async` to :obj:`True`, you cannot rely on adding custom
|
|
attributes to :class:`telegram.ext.CallbackContext`. See its docs for more info.
|
|
|
|
Args:
|
|
callback (:obj:`callable`): The callback function for this handler. Will be called when
|
|
:attr:`check_update` has determined that an update should be processed by this handler.
|
|
Callback signature: ``def callback(update: Update, context: CallbackContext)``
|
|
|
|
The return value of the callback is usually ignored except for the special case of
|
|
:class:`telegram.ext.ConversationHandler`.
|
|
chat_member_types (:obj:`int`, optional): Pass one of :attr:`MY_CHAT_MEMBER`,
|
|
:attr:`CHAT_MEMBER` or :attr:`ANY_CHAT_MEMBER` to specify if this handler should handle
|
|
only updates with :attr:`telegram.Update.my_chat_member`,
|
|
:attr:`telegram.Update.chat_member` or both. Defaults to :attr:`MY_CHAT_MEMBER`.
|
|
run_async (:obj:`bool`): Determines whether the callback will run asynchronously.
|
|
Defaults to :obj:`False`.
|
|
|
|
Attributes:
|
|
callback (:obj:`callable`): The callback function for this handler.
|
|
chat_member_types (:obj:`int`, optional): Specifies if this handler should handle
|
|
only updates with :attr:`telegram.Update.my_chat_member`,
|
|
:attr:`telegram.Update.chat_member` or both.
|
|
run_async (:obj:`bool`): Determines whether the callback will run asynchronously.
|
|
|
|
"""
|
|
|
|
__slots__ = ('chat_member_types',)
|
|
MY_CHAT_MEMBER: ClassVar[int] = -1
|
|
""":obj:`int`: Used as a constant to handle only :attr:`telegram.Update.my_chat_member`."""
|
|
CHAT_MEMBER: ClassVar[int] = 0
|
|
""":obj:`int`: Used as a constant to handle only :attr:`telegram.Update.chat_member`."""
|
|
ANY_CHAT_MEMBER: ClassVar[int] = 1
|
|
""":obj:`int`: Used as a constant to handle bot :attr:`telegram.Update.my_chat_member`
|
|
and :attr:`telegram.Update.chat_member`."""
|
|
|
|
def __init__(
|
|
self,
|
|
callback: Callable[[Update, CCT], RT],
|
|
chat_member_types: int = MY_CHAT_MEMBER,
|
|
run_async: Union[bool, DefaultValue] = DEFAULT_FALSE,
|
|
):
|
|
super().__init__(
|
|
callback,
|
|
run_async=run_async,
|
|
)
|
|
|
|
self.chat_member_types = chat_member_types
|
|
|
|
def check_update(self, update: object) -> bool:
|
|
"""Determines whether an update should be passed to this handlers :attr:`callback`.
|
|
|
|
Args:
|
|
update (:class:`telegram.Update` | :obj:`object`): Incoming update.
|
|
|
|
Returns:
|
|
:obj:`bool`
|
|
|
|
"""
|
|
if isinstance(update, Update):
|
|
if not (update.my_chat_member or update.chat_member):
|
|
return False
|
|
if self.chat_member_types == self.ANY_CHAT_MEMBER:
|
|
return True
|
|
if self.chat_member_types == self.CHAT_MEMBER:
|
|
return bool(update.chat_member)
|
|
return bool(update.my_chat_member)
|
|
return False
|