miniapp-web-jsapi/lib/web/events/index.js

JSAPI/View adapter for miniprogram running on the web

import _toConsumableArray from "@babel/runtime/helpers/toConsumableArray";
import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
import _defineProperty from "@babel/runtime/helpers/defineProperty";
var EventManager = /*#__PURE__*/function () {
  function EventManager(managerName) {
    _classCallCheck(this, EventManager);
    _defineProperty(this, "managerName", void 0);
    _defineProperty(this, "listenersMap", {});
    this.managerName = managerName;
  }
  _createClass(EventManager, [{
    key: "addListener",
    value: function addListener(eventName, listener) {
      var _this = this;
      console.log("EventManager_".concat(this.managerName, "#addListener: ").concat(eventName));
      var listeners = this.listenersMap[eventName];
      if (!listeners) {
        listeners = [];
        this.listenersMap[eventName] = listeners;
      }
      listeners.push(listener);
      return function () {
        _this.removeListener(eventName, listener);
      };
    }
  }, {
    key: "removeListener",
    value: function removeListener(eventName, listener) {
      console.log("EventManager_".concat(this.managerName, "#removeListener: ").concat(eventName));
      if (!listener) {
        this.listenersMap[eventName] = [];
        return;
      }
      var listeners = this.listenersMap[eventName];
      if (listeners) {
        this.listenersMap[eventName] = listeners.filter(function (item) {
          return item !== listener;
        });
      }
    }
  }, {
    key: "notifyEvent",
    value: function notifyEvent(eventName, params) {
      console.log("EventManager_".concat(this.managerName, "#notifyEvent: ").concat(eventName, " -> "), params);
      var listeners = this.listenersMap[eventName];
      if (listeners) {
        // 复制一份防止遍历中同时 remove
        _toConsumableArray(listeners).forEach(function (listener) {
          return listener(params, eventName);
        });
      }
    }
  }]);
  return EventManager;
}();
var defaultEventManager = new EventManager('default');
export { defaultEventManager, EventManager };