luojigou_battle/lib/page/game/status_notifier_mixin.dart

import 'package:flutter/foundation.dart';

mixin StatusNotifierMixin<T> on ChangeNotifier {
  ValueChanged<T>? _statusListener;

  void addStatusListener(ValueChanged<T> listener) {
    _statusListener = listener;
  }

  void clearStatusListener() {
    _statusListener = null;
  }

  @override
  void notifyListeners({T? status}) {
    super.notifyListeners();
    if (status != null) {
      _statusListener?.call(status);
    }
  }
}