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# -*- coding: utf-8 -*-
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# Copyright (C) 2005 Tiago Cogumbreiro <cogumbreiro@users.sf.net>
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# $Id: components.py 570 2005-09-09 19:28:26Z cogumbreiro $
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#Permission is hereby granted, free of charge, to any person obtaining a copy
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#of this software and associated documentation files (the "Software"), to deal
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#in the Software without restriction, including without limitation the rights
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#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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#copies of the Software, and to permit persons to whom the Software is
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#furnished to do so, subject to the following conditions:
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#The above copyright notice and this permission notice shall be included in
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#all copies or substantial portions of the Software.
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#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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__all__ = "EventsDispatcher",
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def __init__ (self, callbacks):
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self.callbacks = callbacks
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def __call__ (self, *args, **kwargs):
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for callback in self.callbacks:
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callback (*args, **kwargs)
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class EventsDispatcher(object):
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An event dispatcher is the central events object. To use it you must first
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create an event with the ``create_event`` method, this will return an
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event source which is basically the function you'll use to trigger the
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event. After that you register the callbacks. Its usage follows:
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>>> dispatcher = EventDispatcher()
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>>> evt_src = dispatcher.create_event ("on-ring-event")
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>>> dispatcher.register ("on-ring-event", callback1)
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def create_event (self, event_name):
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self._events[event_name] = []
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return EventSource (self._events[event_name])
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def create_events (self, event_names, event_sources = None):
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This is a utility method that creates or fills a dict-like object
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and returns it. The keys are the event names and the values are the
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if event_sources is None:
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for evt_name in event_names:
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event_sources[evt_name] = self.create_event (evt_name)
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def event_exists (self, event_name):
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return event_name in self._events
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def register (self, event_name, callback):
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assert self.event_exists (event_name)
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self._events[event_name].append (callback)
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def unregister (self, event_name, callback):
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self._events[event_name].remove (callback)
added
removed
pida/utils/culebra/events.py
