fixes review/2

lib/barcodes_page.dart

@@ -17,13 +17,7 @@ class BarcodesPage extends StatefulWidget {
 }
 
 class BarcodesPageState extends State<BarcodesPage> {
-  final TextEditingController _descriptionController = TextEditingController();
-  final TextEditingController _dataController = TextEditingController();
-
-  void _addBarcode() {
-    final description = _descriptionController.text;
-    final data = _dataController.text;
-
+  void _addBarcode(String description, String data) {
     if (description.isNotEmpty && data.isNotEmpty) {
       setState(() {
         widget.barcodes.add(
@@ -34,9 +28,6 @@ class BarcodesPageState extends State<BarcodesPage> {
           ),
         );
       });
-
-      _descriptionController.clear();
-      _dataController.clear();
     }
   }
 
@@ -54,11 +45,7 @@ class BarcodesPageState extends State<BarcodesPage> {
               child: BarcodesListView(barcodes: widget.barcodes),
             ),
             const SizedBox(height: 8.0),
-            BarcodesPanel(
-              descriptionController: _descriptionController,
-              dataController: _dataController,
-              onAddBarcode: _addBarcode,
-            ),
+            BarcodesPanel(onAddBarcode: _addBarcode),
           ],
         ),
       ),

lib/barcodes_panel.dart

@@ -1,47 +1,72 @@
 import 'package:flutter/material.dart';
 
-class BarcodesPanel extends StatelessWidget {
+class BarcodesPanel extends StatefulWidget {
   const BarcodesPanel({
     super.key,
-    required this.descriptionController,
-    required this.dataController,
     required this.onAddBarcode,
   });
 
-  final TextEditingController descriptionController;
-  final TextEditingController dataController;
-  final VoidCallback onAddBarcode;
+  final void Function(String description, String data) onAddBarcode;
+
+  @override
+  _BarcodesPanelState createState() => _BarcodesPanelState();
+}
+
+class _BarcodesPanelState extends State<BarcodesPanel> {
+  final TextEditingController _descriptionController = TextEditingController();
+  final TextEditingController _dataController = TextEditingController();
+
+  @override
+  void dispose() {
+    _descriptionController.dispose();
+    _dataController.dispose();
+    super.dispose();
+  }
+
+  void _handleAddBarcode() {
+    final description = _descriptionController.text;
+    final data = _dataController.text;
+
+    widget.onAddBarcode(description, data);
+
+    _descriptionController.clear();
+    _dataController.clear();
+  }
 
   @override
   Widget build(BuildContext context) {
-    return Padding(
-      padding: const EdgeInsets.all(8.0),
-      child: Row(
-        children: [
-          Expanded(
-            child: TextField(
-              controller: descriptionController,
-              decoration: const InputDecoration(
-                labelText: 'Opis',
+    return Column(
+      children: [
+        Padding(
+          padding: const EdgeInsets.all(8.0),
+          child: Row(
+            children: [
+              Expanded(
+                child: TextField(
+                  controller: _descriptionController,
+                  decoration: const InputDecoration(
+                    labelText: 'Opis',
+                  ),
+                ),
               ),
-            ),
-          ),
-          const SizedBox(width: 10),
-          Expanded(
-            child: TextField(
-              controller: dataController,
-              decoration: const InputDecoration(
-                labelText: 'Kod kreskowy',
+              const SizedBox(width: 10),
+              Expanded(
+                child: TextField(
+                  controller: _dataController,
+                  decoration: const InputDecoration(
+                    labelText: 'Kod kreskowy',
+                  ),
+                ),
               ),
-            ),
-          ),
-          const SizedBox(width: 10),
-          ElevatedButton(
-            onPressed: onAddBarcode,
-            child: const Text('Dodaj kod kreskowy'),
+              const SizedBox(width: 10),
+              ElevatedButton(
+                onPressed: _handleAddBarcode,
+                child: const Text('Dodaj kod kreskowy'),
+              ),
+            ],
           ),
-        ],
-      ),
+        ),
+      ],
     );
   }
 }