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#
# eventmanager.py
#
# Copyright (C) 2009 Andrew Resch <andrewresch@gmail.com>
#
# Deluge is free software.
#
# You may redistribute it and/or modify it under the terms of the
# GNU General Public License, as published by the Free Software
# Foundation; either version 3 of the License, or (at your option)
# any later version.
#
# deluge 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 deluge. If not, write to:
# The Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor
# Boston, MA 02110-1301, USA.
#
# In addition, as a special exception, the copyright holders give
# permission to link the code of portions of this program with the OpenSSL
# library.
# You must obey the GNU General Public License in all respects for all of
# the code used other than OpenSSL. If you modify file(s) with this
# exception, you may extend this exception to your version of the file(s),
# but you are not obligated to do so. If you do not wish to do so, delete
# this exception statement from your version. If you delete this exception
# statement from all source files in the program, then also delete it here.
#
#
import logging
import deluge.component as component
log = logging.getLogger(__name__)
class EventManager(component.Component):
def __init__(self):
component.Component.__init__(self, "EventManager")
self.handlers = {}
def emit(self, event):
"""
Emits the event to interested clients.
:param event: DelugeEvent
"""
# Emit the event to the interested clients
component.get("RPCServer").emit_event(event)
# Call any handlers for the event
if event.name in self.handlers:
for handler in self.handlers[event.name]:
#log.debug("Running handler %s for event %s with args: %s", event.name, handler, event.args)
try:
handler(*event.args)
except:
log.error("Event handler %s failed in %s", event.name, handler)
def register_event_handler(self, event, handler):
"""
Registers a function to be called when a `:param:event` is emitted.
:param event: str, the event name
:param handler: function, to be called when `:param:event` is emitted
"""
if event not in self.handlers:
self.handlers[event] = []
if handler not in self.handlers[event]:
self.handlers[event].append(handler)
def deregister_event_handler(self, event, handler):
"""
Deregisters an event handler function.
:param event: str, the event name
:param handler: function, currently registered to handle `:param:event`
"""
if event in self.handlers and handler in self.handlers[event]:
self.handlers[event].remove(handler)
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Deluge
