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65 lines
2.1 KiB
Python
65 lines
2.1 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) 2015-2016
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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 base class for handlers as used by the
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Dispatcher """
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class Handler(object):
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def __init__(self, callback, pass_update_queue=False):
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self.callback = callback
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self.pass_update_queue = pass_update_queue
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def checkUpdate(self, update):
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"""
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This method is called to determine if an update should be handled by
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this handler instance. It should always be overridden.
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Args:
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update (object): The update to be tested
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"""
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raise NotImplementedError
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def handleUpdate(self, update, dispatcher):
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"""
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This method is called if it was determined that an update should indeed
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be handled by this instance. It should also be overridden, but in most
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cases call self.callback(dispatcher.bot, update), possibly along with
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optional arguments.
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Args:
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update (object): The update to be handled
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"""
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raise NotImplementedError
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def collectOptionalArgs(self, dispatcher):
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"""
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Prepares the optional arguments that are the same for all types of
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handlers
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Args:
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dispatcher (Dispatcher):
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"""
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optional_args = dict()
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if self.pass_update_queue:
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optional_args['update_queue'] = dispatcher.update_queue
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return optional_args
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