@morjs/runtime-base/esm/event.js

mor runtime base

/* eslint-disable @typescript-eslint/no-non-null-assertion */
// 搜集所有创建的 Emitter 实例
// 主要用于 调试或检查
var EVENT_EMITTER_INSTANCES = {};
/**
 * 创建 Emitter 实例
 * @param reason - 事件创建原因, 用于统计
 * @param all - 自定义 Map 用于存储事件名称和事件处理函数
 * @returns Emitter
 */
export function createEvent(reason, all) {
    all = all || new Map();
    function on(type, handler) {
        var handlers = all.get(type);
        if (handlers) {
            handlers.push(handler);
        }
        else {
            all.set(type, [handler]);
        }
    }
    function off(type, handler) {
        var handlers = all.get(type);
        if (handlers) {
            if (handler) {
                handlers.splice(handlers.indexOf(handler) >>> 0, 1);
            }
            else {
                all.set(type, []);
            }
        }
    }
    function emit(type, evt) {
        var handlers = all.get(type);
        if (handlers) {
            ;
            handlers
                .slice()
                .map(function (handler) {
                handler(evt);
            });
        }
        handlers = all.get('*');
        if (handlers) {
            ;
            handlers.slice().map(function (handler) {
                handler(type, evt);
            });
        }
    }
    function once(type, handler) {
        if (type === '*') {
            var fn_1 = function (type, event) {
                off(type, fn_1);
                handler(type, event);
            };
            on(type, fn_1);
        }
        else {
            var fn_2 = function (event) {
                off(type, fn_2);
                handler(event);
            };
            on(type, fn_2);
        }
    }
    var emitter = {
        all: all,
        on: on,
        off: off,
        emit: emit,
        once: once
    };
    // 记录创建的 event
    EVENT_EMITTER_INSTANCES[reason] = EVENT_EMITTER_INSTANCES[reason] || [];
    EVENT_EMITTER_INSTANCES[reason].push({
        createdAt: +new Date(),
        event: emitter
    });
    return emitter;
}
/**
 * 获取所有 event 实例
 */
export function getAllEvents() {
    return EVENT_EMITTER_INSTANCES;
}
/**
 * 全局默认 Event
 */
export var event = createEvent('default');
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