108 lines
3.7 KiB
C
108 lines
3.7 KiB
C
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//
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// TDSThrottle.h
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// TDSCommon
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//
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// Created by JiangJiahao on 2021/3/22.
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//
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#import <Foundation/Foundation.h>
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/** 自定管理执行与释放时，标记调用来源： 对象/类地址_方法名_调用行数 */
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#define TDSThrottleKey [NSString stringWithFormat:@"%p_%s_%d",self,__func__,__LINE__]
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#define TDSThrottleKeyAppendCustom(customKey) [NSString stringWithFormat:@"%p_%s_%d%@",self,__func__,__LINE__,customKey]
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NS_ASSUME_NONNULL_BEGIN
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typedef void(^TDSThrottleTaskBlock)(void);
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extern double const THROTTLE_INTERVAL; // 默认频率间隔， 0.5s
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/**
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相邻调用必须间隔超时时间以上才会触发
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*/
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@interface TDSThrottle : NSObject
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#pragma mark - 自动管理
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+ (TDSThrottle *)throttleWithThrottleKey:(NSString *)throttleKey taskBlock:(TDSThrottleTaskBlock)taskBlock;
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+ (TDSThrottle *)throttleWithInterval:(NSTimeInterval)interval
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throttleKey:(NSString *)throttleKey
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taskBlock:(TDSThrottleTaskBlock)taskBlock;
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/// 自动执行一个Throttle(节流)任务。
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/// 注意：适用调用不是异常频繁的任务，如用户按钮频繁点击限制
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/// @param interval 防抖间隔，默认0.5s
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/// @param queue 任务执行队列，默认主队列
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/// @param throttleKey 任务来源标识，可使用默认宏 TDSThrottleKey 或 TDSThrottleKeyAppendCustom
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/// @param taskBlock 需要执行的任务
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+ (TDSThrottle *)throttleWithInterval:(NSTimeInterval)interval
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onQueue:(dispatch_queue_t)queue
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throttleKey:(NSString *)throttleKey
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taskBlock:(TDSThrottleTaskBlock)taskBlock;
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#pragma mark - 手动管理
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+ (TDSThrottle *)manualThrottleWithTaskBlock:(TDSThrottleTaskBlock)taskBlock;
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+ (TDSThrottle *)manualThrottleWithInterval:(NSTimeInterval)interval
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taskBlock:(TDSThrottleTaskBlock)taskBlock;
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/// 手动获取一个Throttle(节流)任务,需要在不再使用时手动调用 dispose 释放
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/// 注意：适合在任务会异常频繁执行时进行限制，如滑动列表时在频繁系统回调中处理的任务
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/// @param interval 抖间隔，默认0.5s
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/// @param queue 任务执行队列，默认主队列
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/// @param taskBlock 需要执行的任务
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+ (TDSThrottle *)manualThrottleWithInterval:(NSTimeInterval)interval
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onQueue:(dispatch_queue_t)queue
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taskBlock:(TDSThrottleTaskBlock)taskBlock;
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#pragma mark - 执行与销毁
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/// 触发任务执行，手动管理时调用
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- (void)invoke;
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/// 销毁任务，手动管理时调用
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- (void)dispose;
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@end
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#pragma mark - private classes
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/**
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调用后立即触发，间隔时间未超时无法再次触发，每次调用不会重新计时
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*/
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@interface TDSThrottleLeading : TDSThrottle
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@end
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/**
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调用后等待间隔时间超时以后触发，每次调用不会重新计时
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*/
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@interface TDSThrottleTrailing : TDSThrottle
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@end
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/**
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使用方法：
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1.自动管理（自动执行/释放）
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// 按钮事件或需要执行的函数，任务使用 Throttle 包裹
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- (void)testThrottle {
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[TDSThrottleLeading throttleWithInterval:0.8 throttleKey:TDSThrottleKey taskBlock:^{
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// TODO 想要执行的任务
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}];
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}
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2.手动管理 (创建时调用 manual 开头函数)
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@property (nonatomic, strong) TDSThrottle *testThrottler;
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// 按钮事件或需要执行的函数，任务使用 Throttle 包裹
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- (void)testThrottle {
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if (!self.testThrottler) {
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self.testThrottler = [TDSThrottleLeading manualThrottleWithTaskBlock:^{
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// TODO 想要执行的任务
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}];
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}
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[self.testThrottler invoke];
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}
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// 在适当时机，如退出页面时释放
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[self.testThrottler dispose];
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*/
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NS_ASSUME_NONNULL_END
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