wx-gzh
Version:
106 lines (105 loc) • 4.95 kB
JavaScript
"use strict";
/*
* @Description: 观察者模式
* @Author: chtao
* @Github: https://github.com/LadyYang
* @Email: 1763615252@qq.com
* @Date: 2020-08-02 00:05:35
* @LastEditTime: 2020-08-02 08:29:07
* @LastEditors: chtao
* @FilePath: \wx-gzh\lib\Observe.ts
*/
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var Observe = /** @class */ (function () {
function Observe() {
this.listeners = new Map();
this.on = this.addListener;
this.off = this.removeListener;
}
Observe.prototype.addListener = function (type, listener) {
var funsArr = this.listeners.get(type);
if (funsArr) {
this.listeners.set(type, funsArr.push(listener));
}
else {
this.listeners.set(type, [listener]);
}
return this;
};
Observe.prototype.removeListener = function (type, listener) {
var funsArr = this.listeners.get(type);
if (funsArr) {
var newArr = funsArr.filter(function (fun) { return fun !== listener; });
this.listeners.set(event, newArr);
}
return this;
};
Observe.prototype.removeAllListeners = function (type) {
this.listeners.set(type, null);
return this;
};
Observe.prototype.emit = function (type, e) {
return __awaiter(this, void 0, void 0, function () {
var funsArr, result;
var _this = this;
return __generator(this, function (_a) {
funsArr = this.listeners.get(type);
if (funsArr) {
result = funsArr.map(function (fun) { return __awaiter(_this, void 0, void 0, function () { return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, fun(e)];
case 1: return [2 /*return*/, _a.sent()];
}
}); }); });
return [2 /*return*/, Promise.all(result)];
}
return [2 /*return*/, []];
});
});
};
Observe.prototype.listenerCount = function (type) {
var funsArr = this.listeners.get(type);
if (funsArr) {
return funsArr.length;
}
return 0;
};
return Observe;
}());
exports.default = Observe;