/persistence/vendor/jugglingdb/lib/list.js
JavaScript | 182 lines | 155 code | 25 blank | 2 comment | 16 complexity | dfba5ebf75809edbce07ff8836ee3b9e MD5 | raw file
- module.exports = List;
- function List(data, type, parent) {
- var list = this;
- Object.defineProperty(list, 'parent', {
- writable: false,
- enumerable: false,
- configurable: false,
- value: parent
- });
- Object.defineProperty(list, 'nextid', {
- writable: true,
- enumerable: false,
- value: 1
- });
- data = list.items = data || [];
- var Item = list.ItemType = ListItem;
- if (typeof type === 'object' && type.constructor.name === 'Array') {
- list.ItemType = type[0] || ListItem;
- }
- data.forEach(function (item, i) {
- data[i] = new Item(item, list);
- Object.defineProperty(list, data[i].id, {
- writable: true,
- enumerable: false,
- configurable: true,
- value: data[i]
- });
- if (list.nextid <= data[i].id) {
- list.nextid = data[i].id + 1;
- }
- });
- Object.defineProperty(list, 'length', {
- enumerable: false,
- configurable: true,
- get: function () {
- return list.items.length;
- }
- });
- return list;
- }
- var _;
- try {
- _ = require('underscore');
- } catch (e) {
- _ = false;
- }
- if (_) {
- var _import = [
- // collection methods
- 'each',
- 'map',
- 'reduce',
- 'reduceRight',
- 'find',
- 'filter',
- 'reject',
- 'all',
- 'any',
- 'include',
- 'invoke',
- 'pluck',
- 'max',
- 'min',
- 'sortBy',
- 'groupBy',
- 'sortedIndex',
- 'shuffle',
- 'toArray',
- 'size',
- // array methods
- 'first',
- 'initial',
- 'last',
- 'rest',
- 'compact',
- 'flatten',
- 'without',
- 'union',
- 'intersection',
- 'difference',
- 'uniq',
- 'zip',
- 'indexOf',
- 'lastIndexOf',
- 'range'
- ];
- _import.forEach(function (name) {
- List.prototype[name] = function () {
- var args = [].slice.call(arguments);
- args.unshift(this.items);
- return _[name].apply(_, args);
- };
- });
- }
- List.prototype.toObject = function () {
- return this.items;
- };
- List.prototype.toJSON = function () {
- return this.items;
- };
- List.prototype.toString = function () {
- return JSON.stringify(this.items);
- };
- List.prototype.autoincrement = function () {
- return this.nextid++;
- };
- List.prototype.push = function (obj) {
- var item = new ListItem(obj, this);
- this.items.push(item);
- return item;
- };
- List.prototype.remove = function (obj) {
- var id = obj.id ? obj.id : obj;
- console.log(id);
- var found = false;
- this.items.forEach(function (o, i) {
- if (o.id === id) found = i;
- });
- if (found !== false) {
- delete this[id];
- this.items.splice(found, 1);
- }
- };
- List.prototype.forEach = function (cb) {
- this.items.forEach(cb);
- };
- List.prototype.sort = function (cb) {
- return this.items.sort(cb);
- };
- List.prototype.map = function (cb) {
- if (typeof cb === 'function') return this.items.map(cb);
- if (typeof cb === 'string') return this.items.map(function (el) {
- if (typeof el[cb] === 'function') return el[cb]();
- if (el.hasOwnProperty(cb)) return el[cb];
- });
- };
- function ListItem(data, parent) {
- for (var i in data) this[i] = data[i];
- Object.defineProperty(this, 'parent', {
- writable: false,
- enumerable: false,
- configurable: true,
- value: parent
- });
- if (!this.id) {
- this.id = parent.autoincrement();
- }
- if (parent.ItemType) {
- this.__proto__ = parent.ItemType.prototype;
- if (parent.ItemType !== ListItem) {
- parent.ItemType.apply(this);
- }
- }
- this.save = function (c) {
- parent.parent.save(c);
- };
- }