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Allow adding events with the client.on decorator
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14
telethon/events/__init__.py
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14
telethon/events/__init__.py
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@ -0,0 +1,14 @@
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import abc
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from ..tl import types, functions
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from ..extensions import markdown
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from .. import utils
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class _EventBuilder(abc.ABC):
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@abc.abstractmethod
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def build(self, update):
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"""Builds an event for the given update if possible, or returns None"""
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@abc.abstractmethod
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def resolve(self, client):
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"""Helper method to allow event builders to be resolved before usage"""
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@ -160,6 +160,8 @@ class TelegramClient(TelegramBareClient):
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**kwargs
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)
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self._event_builders = []
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# Some fields to easy signing in. Let {phone: hash} be
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# a dictionary because the user may change their mind.
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self._phone_code_hash = {}
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@ -1623,6 +1625,41 @@ class TelegramClient(TelegramBareClient):
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# endregion
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# region Event handling
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def on(self, event):
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"""
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Turns the given entity into a valid Telegram user or chat.
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Args:
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event (:obj:`_EventBuilder` | :obj:`type`):
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The event builder class or instance to be used,
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for instance ``events.NewMessage``.
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"""
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if isinstance(event, type):
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event = event()
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event.resolve(self)
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def decorator(f):
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self._event_builders.append((event, f))
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return f
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if self._on_handler not in self.updates.handlers:
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self.add_update_handler(self._on_handler)
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return decorator
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def _on_handler(self, update):
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for builder, callback in self._event_builders:
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event = builder.build(update)
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if event:
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event._client = self
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callback(event)
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# endregion
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# region Small utilities to make users' life easier
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def get_entity(self, entity):
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