gajim-plural/src/common/ged.py

65 lines
2.1 KiB
Python

# -*- coding: utf-8 -*-
## This file is part of Gajim.
##
## Gajim is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published
## by the Free Software Foundation; version 3 only.
##
## Gajim 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 General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Gajim. If not, see <http://www.gnu.org/licenses/>.
##
'''
Global Events Dispatcher module.
:author: Mateusz Biliński <mateusz@bilinski.it>
:since: 8th August 2008
:copyright: Copyright (2008) Mateusz Biliński <mateusz@bilinski.it>
:license: GPL
'''
import logging
log = logging.getLogger('gajim.common.ged')
PRECORE = 30
CORE = 40
POSTCORE = 50
class GlobalEventsDispatcher(object):
def __init__(self):
self.handlers = {}
def register_event_handler(self, event_name, priority, handler):
if event_name in self.handlers:
handlers_list = self.handlers[event_name]
i = 0
for i, h in enumerate(handlers_list):
if priority < h[0]:
break
handlers_list.insert(i, (priority, handler))
else:
self.handlers[event_name] = [(priority, handler)]
def remove_event_handler(self, event_name, priority, handler):
if event_name in self.handlers:
try:
self.handlers[event_name].remove((priority, handler))
except ValueError, error:
log.warn('''Function (%s) with priority "%s" never registered
as handler of event "%s". Couldn\'t remove. Error: %s'''
%(handler, priority, event_name, error))
def raise_event(self, event_name, *args, **kwargs):
log.debug('%s\nArgs: %s'%(event_name, str(args)))
if event_name in self.handlers:
for priority, handler in self.handlers[event_name]:
handler(*args, **kwargs)