Can update scanned expenses entries

moneymgr_mobile/lib/widgets/expense_editor.dart

@@ -16,21 +16,27 @@ class ExpenseEditor extends HookConsumerWidget {
   final Uint8List file;
   final Future<void> Function(BaseExpenseInfo) onFinished;
   final Function()? onRescan;
+  final Function()? onDelete;
+  final BaseExpenseInfo? initialData;
 
   const ExpenseEditor({
     super.key,
     required this.file,
     required this.onFinished,
-    required this.onRescan,
+    this.onRescan,
+    this.onDelete,
+    this.initialData,
   });
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final serverConfig = ref.watch(prefsProvider).requireValue.serverConfig()!;
 
-    final labelController = useTextEditingController();
-    final costController = useTextEditingController();
-    final timeController = useState(DateTime.now());
+    final labelController = useTextEditingController(text: initialData?.label);
+    final costController = useTextEditingController(
+      text: initialData?.cost.toString(),
+    );
+    final timeController = useState(initialData?.time ?? DateTime.now());
 
     final (:pending, :snapshot, :hasError) = useAsyncTask();
 
@@ -72,15 +78,33 @@ class ExpenseEditor extends HookConsumerWidget {
       }
     }
 
+    // Delete expense
+    handleDelete() async {
+      if (await confirm(
+            context,
+            content: Text("Do you really want to delete this expense?"),
+          ) &&
+          onDelete != null) {
+        onDelete!();
+      }
+    }
+
     return Scaffold(
       appBar: AppBar(
         title: Text("Expense info"),
         actions: [
           // Rescan expense
-          IconButton(
-            onPressed: onRescan == null ? null : handleRescan,
-            icon: Icon(Icons.restart_alt),
-          ),
+          onRescan == null
+              ? Container()
+              : IconButton(
+                  onPressed: handleRescan,
+                  icon: Icon(Icons.restart_alt),
+                ),
+
+          // Delete expense
+          onDelete == null
+              ? Container()
+              : IconButton(onPressed: handleDelete, icon: Icon(Icons.delete)),
 
           // Submit
           snapshot.connectionState == ConnectionState.waiting