"""
When called on a Folder that contains ExtImage objects this
script returns a random image.
"""
# Copyright © 2004 Saugus.net, Inc.
# All Rights Reserved.

# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.

import random
if context.objectValues('ExtImage'):
    return random.choice(context.objectValues('ExtImage'))
else:
    return None