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https://github.com/Gongxh0901/kunpolibrary
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20
src/event/Event.ts
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20
src/event/Event.ts
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/**
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* @Author: Gongxh
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* @Date: 2024-12-21
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* @Description:
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*/
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export class Event {
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public id: number;
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public name: string;
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public target: any;
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public once: boolean = false;
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public callback: (...arg: any[]) => void;
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public _destroy: boolean = false;
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public _reset(): void {
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this._destroy = false;
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}
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public _recycle(): void {
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this._destroy = true;
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}
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}
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43
src/event/EventFactory.ts
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43
src/event/EventFactory.ts
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/**
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* @Author: Gongxh
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* @Date: 2024-12-21
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* @Description:
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*/
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import { Event } from "./Event";
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export class EventFactory {
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private _id: number = 0;
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private _stack: Event[] = [];
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private _maxCapacity: number = 64;
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private _msgClass: new () => Event;
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get id(): number {
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return this._id++;
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}
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constructor(capacity: number, objectClass: new () => Event) {
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this._maxCapacity = capacity;
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this._msgClass = objectClass;
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}
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public allocate<T extends Event>(): T {
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if (this._stack.length == 0) {
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const ret = new this._msgClass() as T;
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ret.id = this.id;
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return ret;
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}
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const ret = this._stack.pop() as T;
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ret._reset();
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return ret;
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}
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public recycle(ret: Event): boolean {
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if (this._maxCapacity > 0 && this._stack.length < this._maxCapacity) {
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ret._recycle();
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this._stack.push(ret);
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return true;
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}
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return false;
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}
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}
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213
src/event/EventManager.ts
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213
src/event/EventManager.ts
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/**
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* @Author: Gongxh
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* @Date: 2024-12-21
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* @Description:
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*/
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import { Event } from "./Event";
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import { EventFactory } from "./EventFactory";
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export class EventManager {
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private _idToEvent: Map<number, Event> = new Map<number, Event>();
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private _nameToIds: Map<string, Set<number>> = new Map<string, Set<number>>();
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private _targetToIds: Map<any, Set<number>> = new Map<any, Set<number>>();
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private _factroy: EventFactory = new EventFactory(64, Event);
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/**
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* 添加事件监听器。
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* @param name - 事件名称。
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* @param callback - 回调函数，当事件触发时执行。
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* @param target - 可选参数，指定事件监听的目标对象。
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* 该方法将事件和回调函数注册到事件管理器中，以便在事件触发时执行相应的回调函数。
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*/
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public addEvent(name: string, callback: (...args: any[]) => void, target?: any): void {
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this._addEvent(name, callback, false, target);
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}
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/**
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* 添加一个只触发一次的事件监听器。
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* @param name - 事件名称。
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* @param callback - 事件触发时要执行的回调函数。
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* @param target - 可选参数，指定事件监听器的目标对象。
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*/
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public addEventOnce(name: string, callback: (...args: any[]) => void, target?: any): void {
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this._addEvent(name, callback, true, target);
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}
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/**
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* 发送事件给所有注册的监听器。
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* @param name - 事件名称。
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* @param target - 可选参数，指定目标对象，只有目标对象匹配时才会触发监听器。 (制定目标对象 效率更高)
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* @param args - 传递给监听器回调函数的参数。
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*/
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public send(name: string, target?: any, ...args: any[]): void {
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let nameToIds = this._nameToIds;
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if (!nameToIds.has(name)) {
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return;
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}
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let ids = nameToIds.get(name);
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let listenerMap = this._idToEvent;
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let needRemoveIds: number[] = [];
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let triggerList: Event[] = [];
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for (const id of ids.values()) {
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if (!listenerMap.has(id)) {
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throw new Error(`消息ID:【${id}】不存在`);
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}
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let listener = listenerMap.get(id);
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if (!listener._destroy && (!target || target == listener.target)) {
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triggerList.push(listener);
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if (listener.once) {
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listener._destroy = true;
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needRemoveIds.push(listener.id);
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}
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}
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}
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for (const listener of triggerList) {
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listener.callback(...args);
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}
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if (needRemoveIds.length > 0) {
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for (const id of needRemoveIds) {
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this._remove(id);
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}
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}
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}
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/**
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* 移除指定名称的事件监听器。
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* @param name - 事件名称。
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* @param callback - 要移除的回调函数。
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* @param target - 回调函数绑定的目标对象。
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* 该方法会遍历与指定名称关联的所有监听器ID，检查每个监听器的回调函数和目标对象，
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* 如果匹配则将其ID添加到待移除列表中，最后统一移除这些监听器。
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*/
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public remove(name: string, callback: () => void, target: any): void {
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let nameToIds = this._nameToIds;
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if (!nameToIds.has(name)) {
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return;
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}
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let ids = nameToIds.get(name);
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if (ids.size == 0) {
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return;
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}
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let needRemoveIds: number[] = [];
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for (const id of ids.values()) {
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let listener = this._idToEvent.get(id);
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let needRemove = true;
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if (callback && listener.callback != callback) {
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needRemove = false;
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}
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if (target && listener.target != target) {
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needRemove = false;
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}
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needRemove && needRemoveIds.push(id);
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}
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if (needRemoveIds.length > 0) {
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for (const id of needRemoveIds) {
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this._remove(id);
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}
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}
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}
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public removeByNameAndTarget(name: string, target: any): void {
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this.remove(name, null, target);
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}
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public removeByNameAndCallback(name: string, callback: () => void): void {
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this.remove(name, callback, null);
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}
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/**
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* 移除与指定目标关联的所有监听器。
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* 如果目标不存在或关联的监听器ID集合为空，则不执行任何操作。
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* 对于每个监听器ID，从_idToEvent映射中删除监听器，并将其回收到工厂中。
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* 同时，更新_nameToIds映射，确保名称到ID集合的映射保持最新。
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* @param target - 要移除监听器的目标对象。
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*/
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public removeList(target: any): void {
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let targetToIds = this._targetToIds;
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if (!targetToIds.has(target)) {
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return;
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}
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let ids = targetToIds.get(target);
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if (ids.size == 0) {
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return;
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}
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for (const id of ids.values()) {
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let listener = this._idToEvent.get(id);
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let name = listener.name;
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this._idToEvent.delete(id);
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this._factroy.recycle(listener);
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let nameToIds = this._nameToIds;
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if (nameToIds.has(name)) {
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nameToIds.get(name).delete(id);
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}
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}
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ids.clear();
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}
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public destroyAll(): void {
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let listeners = this._idToEvent;
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for (const listener of listeners.values()) {
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this._factroy.recycle(listener);
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}
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this._idToEvent.clear();
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this._nameToIds.clear();
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this._targetToIds.clear();
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}
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public _addEvent(name: string, callback: (...arg: any[]) => void, once: boolean, target: any): void {
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let listener = this._factroy.allocate<Event>();
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listener.name = name;
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listener.target = target;
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listener.once = once;
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listener.callback = callback;
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this._idToEvent.set(listener.id, listener);
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let nameToIds = this._nameToIds;
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let ids: Set<number>;
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if (nameToIds.has(name)) {
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ids = nameToIds.get(name);
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} else {
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ids = new Set<number>();
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nameToIds.set(name, ids);
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}
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ids.add(listener.id);
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if (target) {
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let targetToIds = this._targetToIds;
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if (!targetToIds.has(target)) {
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let ids = new Set<number>();
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ids.add(listener.id);
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targetToIds.set(target, ids);
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} else {
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let ids = targetToIds.get(target);
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ids.add(listener.id);
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}
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}
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}
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private _remove(id: number): void {
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if (!this._idToEvent.has(id)) {
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return;
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}
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let ids = this._idToEvent.get(id);
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let name = ids.name;
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let target = ids.target;
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this._idToEvent.delete(id);
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this._factroy.recycle(ids);
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let nameToIds = this._nameToIds;
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if (nameToIds.has(name)) {
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nameToIds.get(name).delete(id);
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}
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if (target) {
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let targetToIds = this._targetToIds;
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if (targetToIds.has(target)) {
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targetToIds.get(target).delete(id);
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}
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}
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}
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}
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