import 'dart:async';
import 'dart:ui';

// 防抖：只执行最后一次
extension DebounceExtension on VoidCallback {
  VoidCallback debounce([Duration? duration]) {
    Timer? timer;
    return () {
      timer?.cancel();
      timer = Timer(duration ?? const Duration(milliseconds: 200), this);
    };
  }
}

// 节流：固定时间只执行一次
extension ThrottleExtension on VoidCallback {
  VoidCallback throttle([Duration? duration]) {
    bool isThrottled = false;
    return () {
      if (isThrottled) return;
      this(); // 执行原函数
      isThrottled = true;
      Timer(duration ?? const Duration(seconds: 1000), () {
        isThrottled = false;
      });
    };
  }
}