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OpenStack Study: views.py

OpenStack Index

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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.

from django.utils.translation import ugettext_lazy as _

from horizon.tables import MultiTableView # noqa

from horizon.utils import memoized

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class ResourceBrowserView(MultiTableView):

browser_class = None

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def __init__(self, *args, **kwargs):

if not self.browser_class:

raise ValueError("You must specify a ResourceBrowser subclass "

"for the browser_class attribute on %s."

% self.__class__.__name__)

self.table_classes = (self.browser_class.navigation_table_class,

self.browser_class.content_table_class)

self.navigation_selection = False

super(ResourceBrowserView, self).__init__(*args, **kwargs)

@memoized.memoized_method

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def get_browser(self):

browser = self.browser_class(self.request, **self.kwargs)

browser.set_tables(self.get_tables())

if not self.navigation_selection:

ct = browser.content_table

item = browser.navigable_item_name.lower()

ct._no_data_message = _("Select a %s to browse.") % item

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def get_context_data(self, **kwargs):

context = super(ResourceBrowserView, self).get_context_data(**kwargs)

browser = self.get_browser()

context["%s_browser" % browser.name] = browser