chrome/browser/resources/print_preview/data/user_info.js

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 cr.define('print_preview', function() {
   6   'use strict';
   7
   8   /**
   9    * Repository which stores information about the user. Events are dispatched
  10    * when the information changes.
  11    * @constructor
  12    * @extends {cr.EventTarget}
  13    */
  14   function UserInfo() {
  15     cr.EventTarget.call(this);
  16
  17     /**
  18      * Email address of the logged in user or {@code null} if no user is logged
  19      * in. In case of Google multilogin, can be changed by the user.
  20      * @private {?string}
  21      */
  22     this.activeUser_ = null;
  23
  24     /**
  25      * Email addresses of the logged in users or empty array if no user is
  26      * logged in. {@code null} if not known yet.
  27      * @private {?Array<string>}
  28      */
  29     this.users_ = null;
  30   };
  31
  32   /**
  33    * Enumeration of event types dispatched by the user info.
  34    * @enum {string}
  35    */
  36   UserInfo.EventType = {
  37     ACTIVE_USER_CHANGED: 'print_preview.UserInfo.ACTIVE_USER_CHANGED',
  38     USERS_CHANGED: 'print_preview.UserInfo.USERS_CHANGED'
  39   };
  40
  41   UserInfo.prototype = {
  42     __proto__: cr.EventTarget.prototype,
  43
  44     /** @return {boolean} Whether user accounts are already retrieved. */
  45     get initialized() {
  46       return this.users_ != null;
  47     },
  48
  49     /** @return {boolean} Whether user is logged in or not. */
  50     get loggedIn() {
  51       return !!this.activeUser;
  52     },
  53
  54     /**
  55      * @return {?string} Email address of the logged in user or {@code null} if
  56      *     no user is logged.
  57      */
  58     get activeUser() {
  59       return this.activeUser_;
  60     },
  61
  62     /** Changes active user. */
  63     set activeUser(activeUser) {
  64       if (this.activeUser_ != activeUser) {
  65         this.activeUser_ = activeUser;
  66         cr.dispatchSimpleEvent(this, UserInfo.EventType.ACTIVE_USER_CHANGED);
  67       }
  68     },
  69
  70     /**
  71      * @return {?Array<string>} Email addresses of the logged in users or
  72      *     empty array if no user is logged in. {@code null} if not known yet.
  73      */
  74     get users() {
  75       return this.users_;
  76     },
  77
  78     /**
  79      * Sets logged in user accounts info.
  80      * @param {string} activeUser Active user account (email).
  81      * @param {!Array<string>} users List of currently logged in accounts.
  82      */
  83     setUsers: function(activeUser, users) {
  84       this.activeUser_ = activeUser;
  85       this.users_ = users || [];
  86       cr.dispatchSimpleEvent(this, UserInfo.EventType.USERS_CHANGED);
  87     },
  88   };
  89
  90   return {
  91     UserInfo: UserInfo
  92   };
  93 });