Source code for envisage.plugins.event_manager.plugin

# (C) Copyright 2007-2020 Enthought, Inc., Austin, TX
# All rights reserved.
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
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""" This module provides a plugin which adds an EventManager to application.

If the application does not already have an evt_mgr attribute which is an
instance of EventManager, the plugin creates a new EventManager instance,
creates a service to offer the event manager and sets the evt_mgr instance
of the application to the created event manager.

# Enthought library imports.
from envisage.api import Plugin, ServiceOffer
from traits.api import List

[docs]class EventManagerPlugin(Plugin): """ Plugin to add event manager to the application. """ id = "envisage.event_manager" SERVICE_OFFERS = "envisage.service_offers" service_offers = List(contributes_to=SERVICE_OFFERS) def _service_offers_default(self): from import BaseEventManager, get_event_manager evt_mgr_service_offer = ServiceOffer( protocol=BaseEventManager, factory=get_event_manager, ) return [evt_mgr_service_offer]