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      1 // Copyright (c) 2011 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('options', function() {
      6 
      7   var OptionsPage = options.OptionsPage;
      8 
      9   /////////////////////////////////////////////////////////////////////////////
     10   // AccountsOptions class:
     11 
     12   /**
     13    * Encapsulated handling of ChromeOS accounts options page.
     14    * @constructor
     15    */
     16   function AccountsOptions(model) {
     17     OptionsPage.call(this, 'accounts', templateData.accountsPageTabTitle,
     18                      'accountsPage');
     19   }
     20 
     21   cr.addSingletonGetter(AccountsOptions);
     22 
     23   AccountsOptions.prototype = {
     24     // Inherit AccountsOptions from OptionsPage.
     25     __proto__: OptionsPage.prototype,
     26 
     27     /**
     28      * Initializes AccountsOptions page.
     29      */
     30     initializePage: function() {
     31       // Call base class implementation to starts preference initialization.
     32       OptionsPage.prototype.initializePage.call(this);
     33 
     34       // Set up accounts page.
     35       var userList = $('userList');
     36 
     37       var userNameEdit = $('userNameEdit');
     38       options.accounts.UserNameEdit.decorate(userNameEdit);
     39       userNameEdit.addEventListener('add', this.handleAddUser_);
     40 
     41       // If the current user is not the owner, show some warning,
     42       // and do not show the user list.
     43       if (AccountsOptions.currentUserIsOwner()) {
     44         if (!AccountsOptions.whitelistIsManaged()) {
     45           options.accounts.UserList.decorate(userList);
     46         }
     47       } else {
     48         $('ownerOnlyWarning').classList.remove('hidden');
     49       }
     50 
     51       this.addEventListener('visibleChange', this.handleVisibleChange_);
     52 
     53       $('useWhitelistCheck').addEventListener('change',
     54           this.handleUseWhitelistCheckChange_.bind(this));
     55 
     56       Preferences.getInstance().addEventListener(
     57           $('useWhitelistCheck').pref,
     58           this.handleUseWhitelistPrefChange_.bind(this));
     59     },
     60 
     61     /**
     62      * Update user list control state.
     63      * @private
     64      */
     65     updateControls_: function() {
     66       $('userList').disabled =
     67       $('userNameEdit').disabled = !AccountsOptions.currentUserIsOwner() ||
     68                                    AccountsOptions.whitelistIsManaged() ||
     69                                    !$('useWhitelistCheck').checked;
     70     },
     71 
     72     /**
     73      * Handler for OptionsPage's visible property change event.
     74      * @private
     75      * @param {Event} e Property change event.
     76      */
     77     handleVisibleChange_: function(e) {
     78       if (this.visible) {
     79         // fetchUserPictures calls back AccountsOptions.setUserPictures and
     80         // triggers redraw.
     81         chrome.send('fetchUserPictures', []);
     82 
     83         this.updateControls_();
     84       }
     85     },
     86 
     87     /**
     88      * Handler for allow guest check change.
     89      * @private
     90      */
     91     handleUseWhitelistCheckChange_: function(e) {
     92       // Whitelist existing users when guest login is being disabled.
     93       if ($('useWhitelistCheck').checked) {
     94         chrome.send('whitelistExistingUsers', []);
     95       }
     96 
     97       this.updateControls_();
     98     },
     99 
    100     /**
    101      * handler for allow guest pref change.
    102      * @private
    103      */
    104     handleUseWhitelistPrefChange_: function(e) {
    105       this.updateControls_();
    106     },
    107 
    108     /**
    109      * Handler for "add" event fired from userNameEdit.
    110      * @private
    111      * @param {Event} e Add event fired from userNameEdit.
    112      */
    113     handleAddUser_: function(e) {
    114       AccountsOptions.addUsers([e.user]);
    115     }
    116   };
    117 
    118   /**
    119    * Returns whether the current user is owner or not.
    120    */
    121   AccountsOptions.currentUserIsOwner = function() {
    122     return localStrings.getString('current_user_is_owner') == 'true';
    123   };
    124 
    125   /**
    126    * Returns whether the whitelist is managed by policy or not.
    127    */
    128   AccountsOptions.whitelistIsManaged = function() {
    129     return localStrings.getString('whitelist_is_managed') == 'true';
    130   };
    131 
    132   /**
    133    * Updates user picture cache in UserList.
    134    */
    135   AccountsOptions.setUserPictures = function(cache) {
    136     $('userList').setUserPictures(cache);
    137   };
    138 
    139   /**
    140    * Adds given users to userList.
    141    */
    142   AccountsOptions.addUsers = function(users) {
    143     var userList = $('userList');
    144     for (var i = 0; i < users.length; ++i) {
    145       userList.addUser(users[i]);
    146     }
    147   };
    148 
    149   // Export
    150   return {
    151     AccountsOptions: AccountsOptions
    152   };
    153 
    154 });
    155