From 452f62ecf41f416c7a3af33f8e73e306cdafd1c4 Mon Sep 17 00:00:00 2001 From: mathieui Date: Mon, 7 Nov 2011 13:06:57 +0100 Subject: Actually add the events.py file --- src/events.py | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 src/events.py diff --git a/src/events.py b/src/events.py new file mode 100644 index 00000000..2363eca8 --- /dev/null +++ b/src/events.py @@ -0,0 +1,70 @@ +# +# This file is part of Poezio. +# +# Poezio is free software: you can redistribute it and/or modify +# it under the terms of the zlib license. See the COPYING file. + +""" +Defines the EventHandler class +""" + +import logging +log = logging.getLogger(__name__) + +class EventHandler(object): + """ + A class keeping a list of possible events that are triggered + by poezio. You (a plugin for example) can add an event handler + associated with an event name, and whenever that event is triggered, + the callback is called + """ + def __init__(self): + self.events = { + # when you are highlighted in a muc tab + 'highlight': [], + 'muc_say': [], + 'conversation_say': [], + 'private_say': [], + } + + def add_event_handler(self, name, callback, first=True, last=False, position=None): + """ + Add a callback to a given event. + Note that if that event name doesn’t exist, it just returns False. + If it was successfully added, it returns True + """ + if name not in self.events: + return False + + if first: + self.events[name].insert(0, callback) + elif last: + self.events[name].append(callback) + elif position != None and isinstance(position, int): + self.events[name].insert(position, callback) + else: + self.events[name].insert(0, callback) + + return True + + def trigger(self, name, *args, **kwargs): + """ + Call all the callbacks associated to the given event name + """ + callbacks = self.events[name] + for callback in callbacks: + callback(*args, **kwargs) + + def del_event_handler(self, name, callback): + """ + Remove the callback from the list of callbacks of the given event + """ + if not name: + for event in self.events: + while callback in self.events[event]: + self.events[event].remove(callback) + return True + else: + if callback in self.events[name]: + self.events[name].remove(callback) + -- cgit v1.2.3