text: # 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.urls import reverse
  from django.utils.translation import ugettext_lazy as _
  
  from horizon import exceptions
  from horizon import tabs
  
  from openstack_dashboard.api import cinder
  from openstack_dashboard.dashboards.project.snapshots \
      import tables as snap_messages_tables
  
  
  class OverviewTab(tabs.Tab):
      name = _("Overview")
      slug = "overview"
      template_name = ("project/snapshots/_detail_overview.html")
  
      def get_context_data(self, request):
          try:
              snapshot = self.tab_group.kwargs['snapshot']
              volume = cinder.volume_get(request, snapshot.volume_id)
          except Exception:
              redirect = self.get_redirect_url()
              exceptions.handle(self.request,
                                _('Unable to retrieve snapshot details.'),
                                redirect=redirect)
          return {"snapshot": snapshot,
                  "volume": volume,
                  "group_snapshot": snapshot.group_snapshot}
  
      def get_redirect_url(self):
          return reverse('horizon:project:snapshots:index')
  
  
  class SnapshotMessagesTab(tabs.TableTab):
      table_classes = (snap_messages_tables.SnapshotMessagesTable,)
      name = _("Messages")
      slug = "messages_tab"
      template_name = ("horizon/common/_detail_table.html")
      preload = False
  
      def get_snapshot_messages_data(self):
          messages = []
          snapshot = self.tab_group.kwargs['snapshot']
          snap_id = snapshot.id
          try:
              snap_msgs = cinder.message_list(self.request, search_opts={
                  'resource_type': 'volume_snapshot', 'resource_uuid': snap_id})
              for snap_msg in snap_msgs:
                  messages.append(snap_msg)
  
          except Exception:
              exceptions.handle(self.request, _("Unable to retrieve "
                                                "snapshot messages."))
          return messages
  
  
  class SnapshotDetailTabs(tabs.TabGroup):
      slug = "snapshot_details"
      tabs = (OverviewTab, SnapshotMessagesTab)
  