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: '',
+    ));
+  }
 }

lib/domains/transaction/transaction_event.dart

@@ -84,3 +84,7 @@ final class TransactionFilterAccount extends TransactionEvent {
 
   const TransactionFilterAccount(this.account);
 }
+
+final class TransactionResetSnackBar extends TransactionEvent {
+  const TransactionResetSnackBar();
+}

lib/domains/transaction/transaction_state.dart

@@ -20,6 +20,10 @@ final class TransactionState extends Equatable {
 
   final Transaction? currentTransaction;
 
+  final bool showSnackBar;
+  final String snackBarMessage;
+  final bool snackBarIsError;
+
   const TransactionState({
     this.globalTotal = 0,
     this.accountsTotals = const <String, double>{},
@@ -36,6 +40,9 @@ final class TransactionState extends Equatable {
     this.currentTransaction,
     this.categoryFilter,
     this.accountFilter,
+    this.showSnackBar = false,
+    this.snackBarMessage = '',
+    this.snackBarIsError = false,
   });
 
   TransactionState copyWith({
@@ -54,6 +61,9 @@ final class TransactionState extends Equatable {
     Transaction? currentTransaction,
     Category? categoryFilter,
     Account? accountFilter,
+    bool? showSnackBar,
+    String? snackBarMessage,
+    bool? snackBarIsError,
   }) {
     return TransactionState(
       globalTotal: globalTotal ?? this.globalTotal,
@@ -71,6 +81,9 @@ final class TransactionState extends Equatable {
       currentTransaction: currentTransaction ?? this.currentTransaction,
       categoryFilter: categoryFilter ?? this.categoryFilter,
       accountFilter: accountFilter ?? this.accountFilter,
+      showSnackBar: showSnackBar ?? this.showSnackBar,
+      snackBarMessage: snackBarMessage ?? this.snackBarMessage,
+      snackBarIsError: snackBarIsError ?? this.snackBarIsError,
     );
   }
 
@@ -89,6 +102,9 @@ final class TransactionState extends Equatable {
     currentTransaction,
     categoryFilter,
     accountFilter,
+    showSnackBar,
+    snackBarMessage,
+    snackBarIsError,
   ];
   
 }

lib/pages/transactions/transactions_page.dart

@@ -1,4 +1,6 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:krezus/domains/transaction/transaction_bloc.dart';
 import 'package:krezus/pages/transactions/widgets/transactions_actions.dart';
 import 'package:krezus/pages/transactions/widgets/transactions_header.dart';
 import 'package:krezus/pages/transactions/widgets/transactions_list.dart';
@@ -9,11 +11,24 @@ class TransactionsPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     MediaQueryData mediaQuery = MediaQuery.of(context);
-    return Center(
-      child: Container(
-        constraints: const BoxConstraints(
-          maxWidth: 1000 
+    return BlocListener<TransactionBloc, TransactionState>(
+      listenWhen: (previous, current) => previous.showSnackBar != current.showSnackBar,
+      listener: (context, state) {
+        if (state.showSnackBar) {
+          ScaffoldMessenger
+          .of(context)
+          .showSnackBar(
+            SnackBar(
+              backgroundColor: state.snackBarIsError ? Colors.red : Colors.green,
+              content: Text(state.snackBarMessage),
             ),
+          );
+          context.read<TransactionBloc>().add(const TransactionResetSnackBar());
+        }
+      },
+      child: Center(
+        child: Container(
+          constraints: const BoxConstraints(maxWidth: 1000),
           padding: mediaQuery.padding,
           child: const Column(
             children: [
@@ -22,7 +37,8 @@ class TransactionsPage extends StatelessWidget {
               TransactionsList(),
             ],
           ),
-      )
+        ),
+      ),
     );
   }
 }

lib/pages/transactions/widgets/transaction_add_dialog.dart

@@ -21,8 +21,8 @@ class TransactionAddDialog extends StatelessWidget {
           BlocProvider.value(value: BlocProvider.of<CategoryBloc>(context)),
           BlocProvider.value(value: BlocProvider.of<AccountBloc>(context)),
         ],
-        child: const TransactionAddDialog()
-      )
+        child: const TransactionAddDialog(),
+      ),
     );
   }
 
@@ -32,18 +32,18 @@ class TransactionAddDialog extends StatelessWidget {
     final actions = [
       IconButton(
         onPressed: () => TransactionAddDialog.hide(context),
-        icon: const Icon(Icons.close)
+        icon: const Icon(Icons.close),
       ),
       IconButton(
         onPressed: () => context.read<TransactionBloc>().add(const TransactionAdd()),
-        icon: const Icon(Icons.save)
+        icon: const Icon(Icons.save),
       ),
     ];
 
     if (currentTransaction != null) {
       actions.add(IconButton(
         onPressed: () => context.read<TransactionBloc>().add(const TransactionDeleteCurrent()),
-        icon: const Icon(Icons.delete)
+        icon: const Icon(Icons.delete),
       ));
     }
 
@@ -57,8 +57,8 @@ class TransactionAddDialog extends StatelessWidget {
       builder: (context, state) => AlertDialog(
         title: Text(state.currentTransaction == null ? 'Add Transaction' : 'Edit Transaction'),
         actions: _computeActions(context, state.currentTransaction),
-        content: const TransactionForm()
-      )
+        content: const TransactionForm(),
+      ),
     );
   }
 }