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# (C) Copyright 2007-2023 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
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
""" The interface for extension providers. """
# Enthought library imports.
from traits.api import Event, Interface
# Local imports.
from .extension_point_changed_event import ExtensionPointChangedEvent
class IExtensionProvider(Interface):
"""The interface for extension providers."""
# The event fired when one of the provider's extension points has changed.
extension_point_changed = Event(ExtensionPointChangedEvent)
def get_extension_points(self):
"""Return the extension points offered by the provider.
Return an empty list if the provider does not offer any extension
points.
"""
def get_extensions(self, extension_point_id):
"""Return the provider's extensions to an extension point.
The return value *must* be a list. Return an empty list if the provider
does not contribute any extensions to the extension point.
"""
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