added transaction snackbar message

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';
@@ -9,20 +11,34 @@ 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: [
+              TransactionsActions(),
+              TransactionsHeader(),
+              TransactionsList(),
+            ],
+          ),
         ),
-        padding: mediaQuery.padding,
-        child: const Column(
-          children: [
-            TransactionsActions(),
-            TransactionsHeader(),
-            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(),
+      ),
     );
   }
 }