python-telegram-bot/telegram/ext/_chatjoinrequesthandler.py
Harshil 335772568f Update and Expand Tests & pre-commit Settings and Improve Code Quality (#2925)
Co-authored-by: Hinrich Mahler <22366557+Bibo-Joshi@users.noreply.github.com>
2022-05-06 18:22:34 +02:00

68 lines
2.6 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 ChatJoinRequestHandler class."""
from telegram import Update
from telegram.ext._handler import Handler
from telegram.ext._utils.types import CCT
class ChatJoinRequestHandler(Handler[Update, CCT]):
"""Handler class to handle Telegram updates that contain
:attr:`telegram.Update.chat_join_request`.
Warning:
When setting :paramref:`block` to :obj:`False`, you cannot rely on adding custom
attributes to :class:`telegram.ext.CallbackContext`. See its docs for more info.
.. versionadded:: 13.8
Args:
callback (:term:`coroutine function`): The callback function for this handler. Will be
called when :meth:`check_update` has determined that an update should be processed by
this handler. Callback signature::
async 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`.
block (:obj:`bool`, optional): Determines whether the return value of the callback should
be awaited before processing the next handler in
:meth:`telegram.ext.Application.process_update`. Defaults to :obj:`True`.
Attributes:
callback (:term:`coroutine function`): The callback function for this handler.
block (:obj:`bool`): Determines whether the callback will run in a blocking way..
"""
__slots__ = ()
def check_update(self, update: object) -> bool:
"""Determines whether an update should be passed to this handler's :attr:`callback`.
Args:
update (:class:`telegram.Update` | :obj:`object`): Incoming update.
Returns:
:obj:`bool`
"""
return isinstance(update, Update) and bool(update.chat_join_request)