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# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2012 Nebula, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

""" The Horizon OpenStack Dashboard interface.

Contains the core Horizon classes--:class:`~horizon.Dashboard` and
:class:`horizon.Panel`--the dynamic URLconf for Horizon, and common interface
methods like :func:`~horizon.register` and :func:`~horizon.unregister`.

"""
# Because this module is compiled by setup.py before Django may be installed
# in the environment we try importing Django and issue a warning but move on
# should that fail.
Horizon = None
try:
    from horizon.base import Horizon, Dashboard, Panel, PanelGroup
except ImportError:
    import warnings

    def simple_warn(message, category, filename, lineno, file=None, line=None):
        return '%s: %s' % (category.__name__, message)

    msg = ("Could not import Horizon dependencies. "
           "This is normal during installation.\n")
    warnings.formatwarning = simple_warn
    warnings.warn(msg, Warning)

if Horizon:
    register = Horizon.register
    unregister = Horizon.unregister
    get_absolute_url = Horizon.get_absolute_url
    get_user_home = Horizon.get_user_home
    get_dashboard = Horizon.get_dashboard
    get_default_dashboard = Horizon.get_default_dashboard
    get_dashboards = Horizon.get_dashboards
    urls = Horizon._lazy_urls
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