spatial-navigation/lib/Collection.js

A javascript-based implementation of Spatial Navigation.

'use strict';

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

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

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

//import Element from './Element'
//import Container from './Container'


var Collection = function () {
  function Collection() {
    _classCallCheck(this, Collection);

    this.items = [];
    this.itemIds = {};
  }

  _createClass(Collection, [{
    key: 'add',
    value: function add(item, name) {
      this.push(item);

      if (item.constructor.name === 'Element') {
        return item;
      }

      //if (item.constructor.name === 'Container' && !name) {
      if (item.constructor.name === 'Container' && !name) {
        throw Error('You must pass name of item you try add to Collection');
      }

      if (!this.itemIds) {
        this.itemIds = {};
      }

      if (name in this.itemIds) {
        console.warn('Item with name "' + name + '" already exists in Collection');
      }

      this.itemIds[name] = this.items.length - 1;

      return item;
    }
  }, {
    key: 'unshift',
    value: function unshift(item) {
      this.items.unshift(item);

      return item;
    }
  }, {
    key: 'push',
    value: function push(item) {
      this.items.push(item);

      return item;
    }
  }, {
    key: 'indexOf',
    value: function indexOf(item) {
      return this.items.indexOf(item);
    }
  }, {
    key: 'getByIndex',
    value: function getByIndex(index) {
      return this.items[index];
    }

    /**
     *
     * @param name
     * @returns {*}
     */

  }, {
    key: 'getByName',
    value: function getByName(name) {
      return this.items[this.itemIds[name]];
    }
  }, {
    key: 'isExists',
    value: function isExists(name) {
      return Boolean(this.getByName(name));
    }
  }, {
    key: 'length',
    get: function get() {
      return this.items.length;
    }
  }]);

  return Collection;
}();

exports.default = Collection;
module.exports = exports['default'];