+from django.core.exceptions import PermissionDenied
+from django.core.urlresolvers import reverse, NoReverseMatch
+
+import django_evolution
+
+def backend_icon(obj): # backend_status, enacted, updated):
+ #return "%s %s %s" % (str(obj.updated), str(obj.enacted), str(obj.backend_status))
+ if (obj.enacted is not None) and obj.enacted >= obj.updated:
+ return '<span style="min-width:16px;"><img src="/static/admin/img/icon_success.gif"></span>'
+ else:
+ if obj.backend_status == "Provisioning in progress" or obj.backend_status=="":
+ return '<span style="min-width:16px;" title="%s"><img src="/static/admin/img/icon_clock.gif"></span>' % obj.backend_status
+ else:
+ return '<span style="min-width:16px;" title="%s"><img src="/static/admin/img/icon_error.gif"></span>' % obj.backend_status
+
+def backend_text(obj):
+ icon = backend_icon(obj)
+ if (obj.enacted is not None) and obj.enacted >= obj.updated:
+ return "%s %s" % (icon, "successfully enacted") # enacted on %s" % str(obj.enacted))
+ else:
+ return "%s %s" % (icon, obj.backend_status)
+
+class PlainTextWidget(forms.HiddenInput):
+ input_type = 'hidden'
+
+ def render(self, name, value, attrs=None):
+ if value is None:
+ value = ''
+ return mark_safe(str(value) + super(PlainTextWidget, self).render(name, value, attrs))
+
+class ReadOnlyAwareAdmin(admin.ModelAdmin):
+
+ def has_add_permission(self, request, obj=None):
+ return (not self.__user_is_readonly(request))
+
+ def has_delete_permission(self, request, obj=None):
+ return (not self.__user_is_readonly(request))
+
+ def save_model(self, request, obj, form, change):
+ if self.__user_is_readonly(request):
+ raise PermissionDenied
+ #pass
+ else:
+ return super(ReadOnlyAwareAdmin, self).save_model(request, obj, form, change)
+
+ def get_actions(self,request):
+ actions = super(ReadOnlyAwareAdmin,self).get_actions(request)
+
+ if self.__user_is_readonly(request):
+ if 'delete_selected' in actions:
+ del actions['delete_selected']
+
+ return actions
+
+ def change_view(self,request,object_id, extra_context=None):
+ if self.__user_is_readonly(request):
+ if not hasattr(self, "readonly_save"):\r
+ # save the original readonly fields\r
+ self.readonly_save = self.readonly_fields\r
+ self.inlines_save = self.inlines\r
+ if hasattr(self, "user_readonly_fields"):\r
+ self.readonly_fields=self.user_readonly_fields\r
+ if hasattr(self, "user_readonly_inlines"):\r
+ self.inlines = self.user_readonly_inlines\r
+ else:\r
+ if hasattr(self, "readonly_save"):\r
+ # restore the original readonly fields\r
+ self.readonly_fields = self.readonly_save\r
+ if hasattr(self, "inlines_save"):\r
+ self.inlines = self.inlines_save
+
+ try:
+ return super(ReadOnlyAwareAdmin, self).change_view(request, object_id, extra_context=extra_context)
+ except PermissionDenied:
+ pass
+ if request.method == 'POST':
+ raise PermissionDenied
+ request.readonly = True
+ return super(ReadOnlyAwareAdmin, self).change_view(request, object_id, extra_context=extra_context)