Source Code added

mobile/lib/utils/draggable_scroll_controller.dart

@@ -0,0 +1,32 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+
+/// Creates a [DraggableScrollableController] that will be disposed automatically.
+///
+/// See also:
+/// - [DraggableScrollableController]
+DraggableScrollableController useDraggableScrollController({List<Object?>? keys}) {
+  return use(_DraggableScrollControllerHook(keys: keys));
+}
+
+class _DraggableScrollControllerHook extends Hook<DraggableScrollableController> {
+  const _DraggableScrollControllerHook({super.keys});
+
+  @override
+  HookState<DraggableScrollableController, Hook<DraggableScrollableController>> createState() =>
+      _DraggableScrollControllerHookState();
+}
+
+class _DraggableScrollControllerHookState
+    extends HookState<DraggableScrollableController, _DraggableScrollControllerHook> {
+  late final controller = DraggableScrollableController();
+
+  @override
+  DraggableScrollableController build(BuildContext context) => controller;
+
+  @override
+  void dispose() => controller.dispose();
+
+  @override
+  String get debugLabel => 'useDraggableScrollController';
+}