test: dialog tests

lib/widgets/dialog_rename.dart

@@ -10,44 +10,81 @@ showRenameDialog(
   showDialog(
       context: context,
       builder: (context) {
-        final controller = TextEditingController(text: name ?? "");
-        controller.selection =
-            TextSelection(baseOffset: 0, extentOffset: controller.text.length);
-        return AlertDialog(
-          icon: const Icon(Icons.edit_rounded),
-          iconColor: Theme.of(context).colorScheme.primary,
-          title: Text(dialogTitle),
-          titleTextStyle: Theme.of(context).textTheme.titleLarge,
-          content: Container(
-            padding: kPt20,
-            width: 300,
-            child: TextField(
-              autofocus: true,
-              controller: controller,
-              decoration: const InputDecoration(
-                  hintText: "Enter new name",
-                  border: OutlineInputBorder(
-                    borderRadius: kBorderRadius12,
-                  )),
-            ),
-          ),
-          actions: <Widget>[
-            TextButton(
-                onPressed: () {
-                  Navigator.pop(context);
-                },
-                child: const Text('Cancel')),
-            TextButton(
-                onPressed: () {
-                  final val = controller.text.trim();
-                  onRename(val);
-                  Navigator.pop(context);
-                  Future.delayed(const Duration(milliseconds: 100), () {
-                    controller.dispose();
-                  });
-                },
-                child: const Text('Ok')),
-          ],
+        return RenameDialogContent(
+          dialogTitle: dialogTitle,
+          onRename: onRename,
+          name: name,
         );
       });
 }
+
+class RenameDialogContent extends StatefulWidget {
+  const RenameDialogContent({
+    super.key,
+    required this.dialogTitle,
+    required this.onRename,
+    this.name,
+  });
+
+  final String dialogTitle;
+  final Function(String) onRename;
+  final String? name;
+
+  @override
+  State<RenameDialogContent> createState() => _RenameDialogContentState();
+}
+
+class _RenameDialogContentState extends State<RenameDialogContent> {
+  late TextEditingController controller;
+
+  @override
+  void initState() {
+    super.initState();
+    controller = TextEditingController(text: widget.name ?? "");
+    controller.selection =
+        TextSelection(baseOffset: 0, extentOffset: controller.text.length);
+  }
+
+  @override
+  void dispose() {
+    controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      icon: const Icon(Icons.edit_rounded),
+      iconColor: Theme.of(context).colorScheme.primary,
+      title: Text(widget.dialogTitle),
+      titleTextStyle: Theme.of(context).textTheme.titleLarge,
+      content: Container(
+        padding: kPt20,
+        width: 300,
+        child: TextField(
+          autofocus: true,
+          controller: controller,
+          decoration: const InputDecoration(
+              hintText: "Enter new name",
+              border: OutlineInputBorder(
+                borderRadius: kBorderRadius12,
+              )),
+        ),
+      ),
+      actions: <Widget>[
+        TextButton(
+            onPressed: () {
+              Navigator.pop(context);
+            },
+            child: const Text('Cancel')),
+        TextButton(
+            onPressed: () {
+              final val = controller.text.trim();
+              widget.onRename(val);
+              Navigator.pop(context);
+            },
+            child: const Text('Ok')),
+      ],
+    );
+  }
+}