xiamuceer
115 lines
2.8 KiB
TypeScript
115 lines
2.8 KiB
TypeScript
/**
|
|
* 事件总线 - 用于跨组件/页面的数据同步通信
|
|
*
|
|
* 使用方式：
|
|
* - eventBus.on('eventName', callback) - 监听事件
|
|
* - eventBus.off('eventName', callback) - 取消监听
|
|
* - eventBus.emit('eventName', data) - 触发事件
|
|
* - eventBus.once('eventName', callback) - 一次性监听
|
|
*/
|
|
|
|
type EventCallback = (data?: unknown) => void;
|
|
|
|
class EventBus {
|
|
private events: Map<string, EventCallback[]> = new Map();
|
|
|
|
/**
|
|
* 监听事件
|
|
*/
|
|
on(event: string, callback: EventCallback): void {
|
|
if (!this.events.has(event)) {
|
|
this.events.set(event, []);
|
|
}
|
|
this.events.get(event)!.push(callback);
|
|
}
|
|
|
|
/**
|
|
* 取消监听事件
|
|
*/
|
|
off(event: string, callback: EventCallback): void {
|
|
const callbacks = this.events.get(event);
|
|
if (callbacks) {
|
|
const index = callbacks.indexOf(callback);
|
|
if (index > -1) {
|
|
callbacks.splice(index, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 触发事件
|
|
*/
|
|
emit(event: string, data?: unknown): void {
|
|
const callbacks = this.events.get(event);
|
|
if (callbacks) {
|
|
callbacks.forEach(cb => {
|
|
try {
|
|
cb(data);
|
|
} catch (error) {
|
|
console.error(`事件处理器执行失败 [${event}]:`, error);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 一次性监听事件
|
|
*/
|
|
once(event: string, callback: EventCallback): void {
|
|
const onceCallback: EventCallback = (data) => {
|
|
callback(data);
|
|
this.off(event, onceCallback);
|
|
};
|
|
this.on(event, onceCallback);
|
|
}
|
|
|
|
/**
|
|
* 移除某个事件的所有监听器
|
|
*/
|
|
removeAllListeners(event?: string): void {
|
|
if (event) {
|
|
this.events.delete(event);
|
|
} else {
|
|
this.events.clear();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 获取事件的监听器数量
|
|
*/
|
|
listenerCount(event: string): number {
|
|
return this.events.get(event)?.length || 0;
|
|
}
|
|
}
|
|
|
|
// 导出单例
|
|
export const eventBus = new EventBus();
|
|
|
|
// 导出事件名称常量，避免字符串拼写错误
|
|
export const EventNames = {
|
|
// 项目相关事件
|
|
PROJECT_CREATED: 'project:created',
|
|
PROJECT_UPDATED: 'project:updated',
|
|
PROJECT_DELETED: 'project:deleted',
|
|
PROJECT_NEEDS_REFRESH: 'project:needsRefresh',
|
|
|
|
// 角色相关事件
|
|
CHARACTER_CREATED: 'character:created',
|
|
CHARACTER_UPDATED: 'character:updated',
|
|
CHARACTER_DELETED: 'character:deleted',
|
|
CHARACTER_NEEDS_REFRESH: 'character:needsRefresh',
|
|
|
|
// 大纲相关事件
|
|
OUTLINE_CREATED: 'outline:created',
|
|
OUTLINE_UPDATED: 'outline:updated',
|
|
OUTLINE_DELETED: 'outline:deleted',
|
|
OUTLINE_REORDERED: 'outline:reordered',
|
|
OUTLINE_GENERATED: 'outline:generated',
|
|
OUTLINE_NEEDS_REFRESH: 'outline:needsRefresh',
|
|
|
|
// 章节相关事件
|
|
CHAPTER_CREATED: 'chapter:created',
|
|
CHAPTER_UPDATED: 'chapter:updated',
|
|
CHAPTER_DELETED: 'chapter:deleted',
|
|
CHAPTER_NEEDS_REFRESH: 'chapter:needsRefresh',
|
|
} as const; |