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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | 6x 17x 14x 17x 17x 6x 17x 11x 11x 1x 18x 6x 6x | /**
* 简单的事件发射器
* 用于组件间通信，如收藏变更通知
*/
type EventCallback = (...args: any[]) => void;
class EventEmitter {
private events: Map<string, Set<EventCallback>> = new Map();
/**
* 订阅事件
*/
on(event: string, callback: EventCallback): () => void {
if (!this.events.has(event)) {
this.events.set(event, new Set());
}
this.events.get(event)!.add(callback);
// 返回取消订阅函数
return () => {
this.events.get(event)?.delete(callback);
};
}
/**
* 发射事件
*/
emit(event: string, ...args: any[]): void {
this.events.get(event)?.forEach((callback) => {
try {
callback(...args);
} catch (error) {
console.error(`Event handler error for "${event}":`, error);
}
});
}
/**
* 移除所有事件监听
*/
clear(): void {
this.events.clear();
}
}
// 导出单例
export const appEvents = new EventEmitter();
// 定义事件名常量
export const APP_EVENTS = {
FAVORITE_CHANGED: 'favorite_changed',
LIKE_CHANGED: 'like_changed',
POST_FAVORITE_CHANGED: 'post_favorite_changed',
} as const;
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