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#------------------------------------------------------------------------------
# Copyright (c) 2008, Riverbank Computing Limited
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in enthought/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!
#
# Author: Riverbank Computing Limited
# Description: <Enthought permissions package component>
#------------------------------------------------------------------------------
# Enthought library imports.
from pyface.action.api import Action
from traits.api import Bool, Unicode
# Local imports.
from apptools.permissions.package_globals import get_permissions_manager
class LogoutAction(Action):
"""An action that unauthenticates the current user."""
#### 'Action' interface ###################################################
enabled = Bool(False)
name = Unicode("Log&out")
###########################################################################
# 'object' interface.
###########################################################################
def __init__(self, **traits):
"""Initialise the object."""
super(LogoutAction, self).__init__(**traits)
get_permissions_manager().user_manager.on_trait_event(self._refresh_enabled, 'user_authenticated')
###########################################################################
# 'Action' interface.
###########################################################################
def perform(self, event):
"""Perform the action."""
get_permissions_manager().user_manager.unauthenticate_user()
###########################################################################
# Private interface.
###########################################################################
def _refresh_enabled(self, user):
"""Invoked whenever the current user's authorisation state changes."""
self.enabled = user is not None
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