@ace-util/core/lib/event-bus.js

Utils.

"use strict";
var __values = (this && this.__values) || function(o) {
    var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
    if (m) return m.call(o);
    if (o && typeof o.length === "number") return {
        next: function () {
            if (o && i >= o.length) o = void 0;
            return { value: o && o[i++], done: !o };
        }
    };
    throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
var __read = (this && this.__read) || function (o, n) {
    var m = typeof Symbol === "function" && o[Symbol.iterator];
    if (!m) return o;
    var i = m.call(o), r, ar = [], e;
    try {
        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
    }
    catch (error) { e = { error: error }; }
    finally {
        try {
            if (r && !r.done && (m = i["return"])) m.call(i);
        }
        finally { if (e) throw e.error; }
    }
    return ar;
};
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
    if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
        if (ar || !(i in from)) {
            if (!ar) ar = Array.prototype.slice.call(from, 0, i);
            ar[i] = from[i];
        }
    }
    return to.concat(ar || Array.prototype.slice.call(from));
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.EventBus = void 0;
var tools_1 = require("./tools");
/**
 * Event bus
 */
var EventBus = /** @class */ (function () {
    function EventBus() {
        this.events = new Map();
    }
    /**
     * 发射事件
     * @param {string} event 事件名称
     * @param {any} payload 事件载荷
     */
    EventBus.prototype.emit = function (event) {
        var e_1, _a;
        var payload = [];
        for (var _i = 1; _i < arguments.length; _i++) {
            payload[_i - 1] = arguments[_i];
        }
        if (!this.events.has(event)) {
            (0, tools_1.warn)(process.env.NODE_ENV === 'production', "event \"".concat(event, "\" is triggered, but no listeners\uFF0Cnothing will be happening."));
            return this;
        }
        try {
            for (var _b = __values(this.events.get(event)), _c = _b.next(); !_c.done; _c = _b.next()) {
                var handler = _c.value;
                handler.apply(void 0, __spreadArray([], __read(payload), false));
            }
        }
        catch (e_1_1) { e_1 = { error: e_1_1 }; }
        finally {
            try {
                if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
            }
            finally { if (e_1) throw e_1.error; }
        }
        return this;
    };
    /**
     * 事件监听
     * @param event 事件名称
     * @param handler 处理事件的方法
     */
    EventBus.prototype.on = function (event, handler) {
        if (typeof handler === 'function') {
            if (!this.events.has(event))
                this.events.set(event, []);
            this.events.get(event).push(handler);
        }
        else {
            (0, tools_1.warn)(process.env.NODE_ENV === 'production', "handler must be a function, but recived ".concat(typeof handler));
        }
        return this;
    };
    /**
     * 事件监听（只执行1次）
     * @param event 事件名称
     * @param handler 处理事件的方法
     */
    EventBus.prototype.once = function (event, handler) {
        var _this = this;
        if (typeof handler === 'function') {
            if (!this.events.has(event))
                this.events.set(event, []);
            this.events.get(event).push(function () {
                var payload = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    payload[_i] = arguments[_i];
                }
                handler.apply(void 0, __spreadArray([], __read(payload), false));
                _this.off(event, handler);
            });
        }
        else {
            (0, tools_1.warn)(process.env.NODE_ENV === 'production', "handler must be a function, but recived ".concat(typeof handler));
        }
        return this;
    };
    /**
     * 取消事件监听
     * @param event 事件名称
     * @param handler 处理事件的方法
     */
    EventBus.prototype.off = function (event, handler) {
        var hasHandler = false, isHandlerFunction = false, handles = [];
        if ((hasHandler = this.events.has(event) && !!(handles = this.events.get(event)).length) &&
            (isHandlerFunction = typeof handler === 'function')) {
            var i = handles.findIndex(function (fn) { return fn === handler; });
            i >= 0 && handles.splice(i, 1);
        }
        else if (!hasHandler) {
            (0, tools_1.warn)(process.env.NODE_ENV === 'production', "no event name of \"".concat(event, "\" is on listening"));
        }
        else if (!isHandlerFunction) {
            (0, tools_1.warn)(process.env.NODE_ENV === 'production', "handler must be a function, but recived ".concat(typeof handler));
        }
        return this;
    };
    /**
     * 清理事件总线
     */
    EventBus.prototype.clear = function () {
        this.events = new Map();
        return this;
    };
    /**
     * 获取当前事件总线详情
     */
    EventBus.prototype.getEvents = function () {
        return Object.freeze(this.events);
    };
    return EventBus;
}());
exports.EventBus = EventBus;
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