Initial draft

lib/widget/operations/bloc/operation_state.dart

@@ -0,0 +1,17 @@
+abstract class OperationState {}
+
+class OperationIdle extends OperationState {}
+
+class OperationLoading extends OperationState {}
+
+class OperationFailed extends OperationState {
+  String message;
+
+  OperationFailed({required this.message});
+}
+
+class OperationFinished extends OperationState {
+  String? message;
+
+  OperationFinished({this.message});
+}