lin3s-event-bus/dist/common/Core/Priority/EventSubscriberPriorityQueue.js

Simple but powerful event bus written in ES2015

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/*
 * This file is part of the EventBusJS library.
 *
 * Copyright (c) 2016-present LIN3S <info@lin3s.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @author Mikel Tuesta <mikeltuesta@gmail.com>
 */

var EventSubscriberPriorityQueue = function EventSubscriberPriorityQueue() {
  var _this = this;

  _classCallCheck(this, EventSubscriberPriorityQueue);

  var queue = [];

  this.isSorted = true;

  this.sort = function () {
    queue.sort(function (aSubscriber, anotherSubscriber) {
      return anotherSubscriber.priority.getPriority() - aSubscriber.priority.getPriority();
    });

    _this.isSorted = true;
  };

  this.push = function (aSubscriber) {
    _this.isSorted = false;
    queue.push(aSubscriber);
  };

  this.remove = function (aSubscriber) {
    var aSubscriberIndex = queue.indexOf(aSubscriber);
    if (aSubscriberIndex < 0) {
      return;
    }

    _this.isSorted = false;
    queue.splice(aSubscriberIndex, 1);
  };

  this.getSubscribers = function () {
    if (!_this.isSorted) {
      _this.sort();
    }

    return [].concat(queue);
  };
};

exports.default = EventSubscriberPriorityQueue;