First try at a user management screen for the desktop

chrome/browser/resources/user_chooser/user_chooser.js

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+<include src="../chromeos/login/screen.js"></include>
+<include src="../chromeos/login/bubble.js"></include>
+<include src="../chromeos/login/display_manager.js"></include>
+<include src="control_bar.js"></include>
+<include src="../chromeos/login/screen_account_picker.js"></include>
+<include src="../chromeos/login/user_pod_row.js"></include>
+<include src="../chromeos/login/resource_loader.js"></include>
+
+cr.define('cr.ui', function() {
+  var DisplayManager = cr.ui.login.DisplayManager;
+
+  /**
+  * Constructs an Out of box controller. It manages initialization of screens,
+  * transitions, error messages display.
+  * @extends {DisplayManager}
+  * @constructor
+  */
+  function Oobe() {
+  }
+
+  cr.addSingletonGetter(Oobe);
+
+  Oobe.prototype = {
+    __proto__: DisplayManager.prototype,
+  };
+
+  /**
+   * Shows the given screen.
+   * @param {Object} screen Screen params dict, e.g. {id: screenId, data: data}
+   */
+  Oobe.showUserChooserScreen = function() {
+    Oobe.getInstance().showScreen({id: 'account-picker',
+                                   data: {disableAddUser: false}});
+    // The ChromeOS account-picker will hide the AddUser button if a user is
+    // logged in and the screen is "locked", so we must re-enabled it
+    $('add-user-header-bar-item').hidden = false;
+  };
+
+  /**
+   * Shows signin UI.
+   * @param {string} opt_email An optional email for signin UI.
+   */
+  Oobe.launchUser = function(email, displayName) {
+    chrome.send('launchUser', [email, displayName]);
+  };
+
+  /**
+   * Disables signin UI.
+   */
+  Oobe.disableSigninUI = function() {
+    DisplayManager.disableSigninUI();
+  };
+
+  /**
+   * Shows signin UI.
+   * @param {string} opt_email An optional email for signin UI.
+   */
+  Oobe.showSigninUI = function(opt_email) {
+    DisplayManager.showSigninUI(opt_email);
+  };
+
+  /**
+   * Clears error bubble as well as optional menus that could be open.
+   */
+  Oobe.clearErrors = function() {
+    DisplayManager.clearErrors();
+  };
+
+  /**
+   * Clears password field in user-pod.
+   */
+  Oobe.clearUserPodPassword = function() {
+    DisplayManager.clearUserPodPassword();
+  };
+
+  /**
+   * Restores input focus to currently selected pod.
+   */
+  Oobe.refocusCurrentPod = function() {
+    DisplayManager.refocusCurrentPod();
+  };
+
+  // Export
+  return {
+    Oobe: Oobe
+  };
+});
+
+cr.define('UserChooser', function() {
+  'use strict';
+
+  function initialize() {
+    login.AccountPickerScreen.register();
+    cr.ui.Bubble.decorate($('bubble'));
+    login.HeaderBar.decorate($('login-header-bar'));
+    chrome.send('userChooserInitialize');
+  }
+
+  // Return an object with all of the exports.
+  return {
+    initialize: initialize
+  };
+});
+
+var Oobe = cr.ui.Oobe;
+
+// Allow selection events on components with editable text (password field)
+// bug (http://code.google.com/p/chromium/issues/detail?id=125863)
+disableTextSelectAndDrag(function(e) {
+  var src = e.target;
+  return src instanceof HTMLTextAreaElement ||
+         src instanceof HTMLInputElement &&
+         /text|password|search/.test(src.type);
+});
+
+document.addEventListener('DOMContentLoaded', UserChooser.initialize);