Initial draft

lib/widget/operations/bloc/operation_event.dart

@@ -0,0 +1,15 @@
+abstract class OperationEvent {}
+
+class LoadOperation extends OperationEvent {}
+
+class FailOperation extends OperationEvent {
+  String message;
+
+  FailOperation({required this.message});
+}
+
+class FinishOperation extends OperationEvent {
+  String? message;
+
+  FinishOperation({this.message});
+}