text: """
  Built-in, globally-available admin actions.
  """
  
  from django.contrib import messages
  from django.contrib.admin import helpers
  from django.contrib.admin.utils import get_deleted_objects, model_ngettext
  from django.core.exceptions import PermissionDenied
  from django.db import router
  from django.template.response import TemplateResponse
  from django.utils.encoding import force_text
  from django.utils.translation import ugettext as _, ugettext_lazy
  
  
  def delete_selected(modeladmin, request, queryset):
      """
      Default action which deletes the selected objects.
  
      This action first displays a confirmation page which shows all the
      deleteable objects, or, if the user has no permission one of the related
      childs (foreignkeys), a "permission denied" message.
  
      Next, it deletes all selected objects and redirects back to the change list.
      """
      opts = modeladmin.model._meta
      app_label = opts.app_label
  
      # Check that the user has delete permission for the actual model
      if not modeladmin.has_delete_permission(request):
          raise PermissionDenied
  
      using = router.db_for_write(modeladmin.model)
  
      # Populate deletable_objects, a data structure of all related objects that
      # will also be deleted.
      deletable_objects, model_count, perms_needed, protected = get_deleted_objects(
          queryset, opts, request.user, modeladmin.admin_site, using)
  
      # The user has already confirmed the deletion.
      # Do the deletion and return a None to display the change list view again.
      if request.POST.get('post') and not protected:
          if perms_needed:
              raise PermissionDenied
          n = queryset.count()
          if n:
              for obj in queryset:
                  obj_display = force_text(obj)
                  modeladmin.log_deletion(request, obj, obj_display)
              queryset.delete()
              modeladmin.message_user(request, _("Successfully deleted %(count)d %(items)s.") % {
                  "count": n, "items": model_ngettext(modeladmin.opts, n)
              }, messages.SUCCESS)
          # Return None to display the change list page again.
          return None
  
      objects_name = model_ngettext(queryset)
  
      if perms_needed or protected:
          title = _("Cannot delete %(name)s") % {"name": objects_name}
      else:
          title = _("Are you sure?")
  
      context = dict(
          modeladmin.admin_site.each_context(request),
          title=title,
          objects_name=objects_name,
          deletable_objects=[deletable_objects],
          model_count=dict(model_count).items(),
          queryset=queryset,
          perms_lacking=perms_needed,
          protected=protected,
          opts=opts,
          action_checkbox_name=helpers.ACTION_CHECKBOX_NAME,
          media=modeladmin.media,
      )
  
      request.current_app = modeladmin.admin_site.name
  
      # Display the confirmation page
      return TemplateResponse(request, modeladmin.delete_selected_confirmation_template or [
          "admin/%s/%s/delete_selected_confirmation.html" % (app_label, opts.model_name),
          "admin/%s/delete_selected_confirmation.html" % app_label,
          "admin/delete_selected_confirmation.html"
      ], context)
  
  
  delete_selected.short_description = ugettext_lazy("Delete selected %(verbose_name_plural)s")
  