added transaction snackbar message

lib/domains/transaction/transaction_bloc.dart

@@ -37,6 +37,7 @@ class TransactionBloc extends Bloc<TransactionEvent, TransactionState> {
     on<TransactionDeleteCurrent>(_onTransactionDeleteCurrent);
     on<TransactionFilterCategory>(_onTransactionFilterCategory);
     on<TransactionFilterAccount>(_onTransactionFilterAccount);
+    on<TransactionResetSnackBar>(_onTransactionResetSnackBar);
 
     _transactionsRepository
       .getTransactionsStream()
@@ -181,6 +182,9 @@ class TransactionBloc extends Bloc<TransactionEvent, TransactionState> {
         transactionsLinesFiltered: _applyFilters(computeResult.list),
         globalTotal: computeResult.globalTotal,
         accountsTotals: computeResult.accountsTotals,
+        showSnackBar: true,
+        snackBarIsError: false,
+        snackBarMessage: 'Transaction ${currentTransaction == null ? 'added' : 'updated'} !',
       ));
     }
   }
@@ -231,6 +235,9 @@ class TransactionBloc extends Bloc<TransactionEvent, TransactionState> {
         transactionsLinesFiltered: _applyFilters(computeResult.list),
         globalTotal: computeResult.globalTotal,
         accountsTotals: computeResult.accountsTotals,
+        showSnackBar: true,
+        snackBarIsError: false,
+        snackBarMessage: 'Transaction removed !',
       ));
     }
   }
@@ -296,4 +303,12 @@ class TransactionBloc extends Bloc<TransactionEvent, TransactionState> {
 
     return transactionsLinesFiltered;
   }
+
+  FutureOr<void> _onTransactionResetSnackBar(TransactionResetSnackBar event, Emitter<TransactionState> emit) {
+    emit(state.copyWith(
+      showSnackBar: false,
+      snackBarIsError: false,
+      snackBarMessage: '',
+    ));
+  }
 }