29 lines
695 B
Dart
29 lines
695 B
Dart
import 'dart:async';
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import 'dart:ui';
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// 防抖：只执行最后一次
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extension DebounceExtension on VoidCallback {
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VoidCallback debounce([Duration? duration]) {
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Timer? timer;
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return () {
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timer?.cancel();
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timer = Timer(duration ?? const Duration(milliseconds: 200), this);
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};
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}
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}
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// 节流：固定时间只执行一次
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extension ThrottleExtension on VoidCallback {
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VoidCallback throttle([Duration? duration]) {
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bool isThrottled = false;
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return () {
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if (isThrottled) return;
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this(); // 执行原函数
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isThrottled = true;
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Timer(duration ?? const Duration(seconds: 1000), () {
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isThrottled = false;
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});
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};
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}
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}
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