Index: samples/survey/web/elements/question/question_element.dart |
diff --git a/samples/survey/web/elements/question/question_element.dart b/samples/survey/web/elements/question/question_element.dart |
index 4040f6538080724ce27a6f9167158f58e9bda69e..423fa5b90bba2f91bf5a80e5d2d0f0be6a596a48 100644 |
--- a/samples/survey/web/elements/question/question_element.dart |
+++ b/samples/survey/web/elements/question/question_element.dart |
@@ -14,7 +14,7 @@ import 'package:survey/models.dart'; |
* provide answer options to the user, and pick the widget that the user sees. |
*/ |
@CustomTag('question-element') |
-class QuestionElement extends PolymerElement with ObservableMixin { |
+class QuestionElement extends PolymerElement with Observable { |
static const String TEXTFIELD_OPT = 'Use a text field'; |
static const String ONE_FROM_MANY_OPT = 'Select one from many options'; |
static const String MANY_FROM_MANY_OPT = 'Select many from many options'; |