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https://github.com/python-telegram-bot/python-telegram-bot.git
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121 lines
4.7 KiB
Python
121 lines
4.7 KiB
Python
#!/usr/bin/env python
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#
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# A library that provides a Python interface to the Telegram Bot API
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# Copyright (C) 2015-2024
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# Leandro Toledo de Souza <devs@python-telegram-bot.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser Public License for more details.
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#
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# You should have received a copy of the GNU Lesser Public License
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# along with this program. If not, see [http://www.gnu.org/licenses/].
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"""This module contains the ChosenInlineResultHandler class."""
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import re
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from typing import TYPE_CHECKING, Any, Match, Optional, Pattern, TypeVar, Union, cast
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from telegram import Update
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from telegram._utils.defaultvalue import DEFAULT_TRUE
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from telegram._utils.types import DVType
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from telegram.ext._handlers.basehandler import BaseHandler
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from telegram.ext._utils.types import CCT, HandlerCallback
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RT = TypeVar("RT")
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if TYPE_CHECKING:
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from telegram.ext import Application
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class ChosenInlineResultHandler(BaseHandler[Update, CCT]):
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"""Handler class to handle Telegram updates that contain
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:attr:`telegram.Update.chosen_inline_result`.
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Warning:
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When setting :paramref:`block` to :obj:`False`, you cannot rely on adding custom
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attributes to :class:`telegram.ext.CallbackContext`. See its docs for more info.
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Args:
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callback (:term:`coroutine function`): The callback function for this handler. Will be
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called when :meth:`check_update` has determined that an update should be processed by
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this handler. Callback signature::
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async def callback(update: Update, context: CallbackContext)
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The return value of the callback is usually ignored except for the special case of
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:class:`telegram.ext.ConversationHandler`.
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block (:obj:`bool`, optional): Determines whether the return value of the callback should
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be awaited before processing the next handler in
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:meth:`telegram.ext.Application.process_update`. Defaults to :obj:`True`.
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.. seealso:: :wiki:`Concurrency`
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pattern (:obj:`str` | :func:`re.Pattern <re.compile>`, optional): Regex pattern. If not
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:obj:`None`, :func:`re.match`
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is used on :attr:`telegram.ChosenInlineResult.result_id` to determine if an update
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should be handled by this handler. This is accessible in the callback as
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:attr:`telegram.ext.CallbackContext.matches`.
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.. versionadded:: 13.6
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Attributes:
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callback (:term:`coroutine function`): The callback function for this handler.
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block (:obj:`bool`): Determines whether the return value of the callback should be
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awaited before processing the next handler in
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:meth:`telegram.ext.Application.process_update`.
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pattern (`Pattern`): Optional. Regex pattern to test
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:attr:`telegram.ChosenInlineResult.result_id` against.
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.. versionadded:: 13.6
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"""
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__slots__ = ("pattern",)
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def __init__(
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self,
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callback: HandlerCallback[Update, CCT, RT],
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block: DVType[bool] = DEFAULT_TRUE,
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pattern: Optional[Union[str, Pattern[str]]] = None,
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):
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super().__init__(callback, block=block)
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if isinstance(pattern, str):
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pattern = re.compile(pattern)
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self.pattern: Optional[Union[str, Pattern[str]]] = pattern
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def check_update(self, update: object) -> Optional[Union[bool, object]]:
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"""Determines whether an update should be passed to this handler's :attr:`callback`.
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Args:
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update (:class:`telegram.Update` | :obj:`object`): Incoming update.
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Returns:
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:obj:`bool` | :obj:`re.match`
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"""
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if isinstance(update, Update) and update.chosen_inline_result:
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if self.pattern:
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if match := re.match(self.pattern, update.chosen_inline_result.result_id):
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return match
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else:
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return True
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return None
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def collect_additional_context(
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self,
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context: CCT,
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update: Update,
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application: "Application[Any, CCT, Any, Any, Any, Any]",
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check_result: Union[bool, Match[str]],
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) -> None:
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"""This function adds the matched regex pattern result to
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:attr:`telegram.ext.CallbackContext.matches`.
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"""
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if self.pattern:
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check_result = cast(Match, check_result)
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context.matches = [check_result]
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