python-telegram-bot/telegram/ext/messagehandler.py

134 lines
4.9 KiB
Python

#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2016
# 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 MessageHandler class """
from .handler import Handler
from telegram import Update
from telegram.utils.deprecate import deprecate
class Filters(object):
"""
Convenient namespace (class) & methods for the filter funcs of the
MessageHandler class.
"""
@staticmethod
def text(update):
return update.message.text and not update.message.text.startswith('/')
@staticmethod
def command(update):
return update.message.text and update.message.text.startswith('/')
@staticmethod
def audio(update):
return bool(update.message.audio)
@staticmethod
def document(update):
return bool(update.message.document)
@staticmethod
def photo(update):
return bool(update.message.photo)
@staticmethod
def sticker(update):
return bool(update.message.sticker)
@staticmethod
def video(update):
return bool(update.message.video)
@staticmethod
def voice(update):
return bool(update.message.voice)
@staticmethod
def contact(update):
return bool(update.message.contact)
@staticmethod
def location(update):
return bool(update.message.location)
@staticmethod
def venue(update):
return bool(update.message.venue)
@staticmethod
def status_update(update):
return bool(update.message.new_chat_member or update.message.left_chat_member
or update.message.new_chat_title or update.message.new_chat_photo
or update.message.delete_chat_photo or update.message.group_chat_created
or update.message.supergroup_chat_created
or update.message.channel_chat_created or update.message.migrate_to_chat_id
or update.message.migrate_from_chat_id or update.message.pinned_message)
class MessageHandler(Handler):
"""
Handler class to handle telegram messages. Messages are Telegram Updates
that do not contain a command. They might contain text, media or status
updates.
Args:
filters (list[function]): A list of filter functions. Standard filters
can be found in the Filters class above.
| Each `function` takes ``Update`` as arg and returns ``bool``.
| All messages that match at least one of those filters will be
accepted. If ``bool(filters)`` evaluates to ``False``, messages are
not filtered.
callback (function): A function that takes ``bot, update`` as
positional arguments. It will be called when the ``check_update``
has determined that an update should be processed by this handler.
pass_update_queue (optional[bool]): If the handler should be passed the
update queue as a keyword argument called ``update_queue``. It can
be used to insert updates. Default is ``False``
pass_job_queue (optional[bool]): If the callback should be passed the job queue as a
keyword argument called ``job_queue``. It can be used to schedule new jobs.
Default is ``False``
"""
def __init__(self, filters, callback, pass_update_queue=False, pass_job_queue=False):
super(MessageHandler, self).__init__(callback,
pass_update_queue=pass_update_queue,
pass_job_queue=pass_job_queue)
self.filters = filters
def check_update(self, update):
if isinstance(update, Update) and update.message:
if not self.filters:
res = True
else:
res = any(func(update) for func in self.filters)
else:
res = False
return res
def handle_update(self, update, dispatcher):
optional_args = self.collect_optional_args(dispatcher)
self.callback(dispatcher.bot, update, **optional_args)
# old non-PEP8 Handler methods
m = "telegram.MessageHandler."
checkUpdate = deprecate(check_update, m + "checkUpdate", m + "check_update")
handleUpdate = deprecate(handle_update, m + "handleUpdate", m + "handle_update")