Single user pod implementation for new login screen

chrome/browser/resources/chromeos/login/md_header_bar.js

+// Copyright (c) 2012 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.
+
+/**
+ * @fileoverview Login UI header bar implementation.
+ */
+
+cr.define('login', function() {
+  /**
+   * Creates a header bar element.
+   *
+   * @constructor
+   * @extends {HTMLDivElement}
+   */
+  var HeaderBar = cr.ui.define('div');
+
+  HeaderBar.prototype = {
+    __proto__: HTMLDivElement.prototype,
+
+    // Whether guest button should be shown when header bar is in normal mode.
+    showGuest_: false,
+
+    // Whether the reboot button should be shown the when header bar is in
+    // normal mode.
+    showReboot_: false,
+
+    // Whether the shutdown button should be shown when the header bar is in
+    // normal mode.
+    showShutdown_: true,
+
+    // Whether the create supervised user button should be shown when the header
+    // bar is in normal mode. It will be shown in "More settings" menu.
+    showCreateSupervised_: false,
+
+    // Current UI state of the sign-in screen.
+    signinUIState_: SIGNIN_UI_STATE.HIDDEN,
+
+    // Whether to show kiosk apps menu.
+    hasApps_: false,
+
+    /** @override */
+    decorate: function() {
+      document.addEventListener('click', this.handleClick_.bind(this));
+      $('shutdown-header-bar-item')
+          .addEventListener('click', this.handleShutdownClick_);
+      $('shutdown-button').addEventListener('click', this.handleShutdownClick_);
+      $('restart-header-bar-item')
+          .addEventListener('click', this.handleShutdownClick_);
+      $('restart-button').addEventListener('click', this.handleShutdownClick_);
+      $('add-user-button').addEventListener('click', this.handleAddUserClick_);
+      $('more-settings-button')
+          .addEventListener('click', this.handleMoreSettingsClick_.bind(this));
+      $('guest-user-header-bar-item')
+          .addEventListener('click', this.handleGuestClick_);
+      $('guest-user-button').addEventListener('click', this.handleGuestClick_);
+      $('sign-out-user-button')
+          .addEventListener('click', this.handleSignoutClick_);
+      $('cancel-multiple-sign-in-button')
+          .addEventListener('click', this.handleCancelMultipleSignInClick_);
+      this.addSupervisedUserMenu.addEventListener(
+          'click', this.handleAddSupervisedUserClick_.bind(this));
+      this.addSupervisedUserMenu.addEventListener(
+          'keydown', this.handleAddSupervisedUserKeyDown_.bind(this));
+      if (Oobe.getInstance().displayType == DISPLAY_TYPE.LOGIN ||
+          Oobe.getInstance().displayType == DISPLAY_TYPE.OOBE) {
+        if (Oobe.getInstance().newKioskUI)
+          chrome.send('initializeKioskApps');
+        else
+          login.AppsMenuButton.decorate($('show-apps-button'));
+      }
+      this.updateUI_();
+    },
+
+    /**
+     * Tab index value for all button elements.
+     *
+     * @type {number}
+     */
+    set buttonsTabIndex(tabIndex) {
+      var buttons = this.getElementsByTagName('button');
+      for (var i = 0, button; button = buttons[i]; ++i) {
+        button.tabIndex = tabIndex;
+      }
+    },
+
+    /**
+     * Disables the header bar and all of its elements.
+     *
+     * @type {boolean}
+     */
+    set disabled(value) {
+      var buttons = this.getElementsByTagName('button');
+      for (var i = 0, button; button = buttons[i]; ++i)
+        if (!button.classList.contains('button-restricted'))
+          button.disabled = value;
+    },
+
+    get getMoreSettingsMenu() {
+      return $('more-settings-header-bar-item');
+    },
+
+    get addSupervisedUserMenu() {
+      return this.querySelector('.add-supervised-user-menu');
+    },
+
+    /**
+     * Whether action box button is in active state.
+     * @type {boolean}
+     */
+    get isMoreSettingsActive() {
+      return this.getMoreSettingsMenu.classList.contains('active');
+    },
+    set isMoreSettingsActive(active) {
+      if (active == this.isMoreSettingsActive)
+        return;
+      this.getMoreSettingsMenu.classList.toggle('active', active);
+      $('more-settings-button').tabIndex = active ? -1 : 0;
+    },
+
+    /**
+     * Add user button click handler.
+     *
+     * @private
+     */
+    handleAddUserClick_: function(e) {
+      Oobe.showSigninUI();
+      // Prevent further propagation of click event. Otherwise, the click event
+      // handler of document object will set wallpaper to user's wallpaper when
+      // there is only one existing user. See http://crbug.com/166477
+      e.stopPropagation();
+    },
+
+    handleMoreSettingsClick_: function(e) {
+      this.isMoreSettingsActive = !this.isMoreSettingsActive;
+      this.addSupervisedUserMenu.focus();
+      e.stopPropagation();
+    },
+
+    handleClick_: function(e) {
+      this.isMoreSettingsActive = false;
+    },
+
+    /**
+     * Cancel add user button click handler.
+     *
+     * @private
+     */
+    handleCancelAddUserClick_: function(e) {
+      // Let screen handle cancel itself if that is capable of doing so.
+      if (Oobe.getInstance().currentScreen &&
+          Oobe.getInstance().currentScreen.cancel) {
+        Oobe.getInstance().currentScreen.cancel();
+        return;
+      }
+
+      Oobe.showUserPods();
+    },
+
+    /**
+     * Guest button click handler.
+     *
+     * @private
+     */
+    handleGuestClick_: function(e) {
+      Oobe.disableSigninUI();
+      chrome.send('launchIncognito');
+      e.stopPropagation();
+    },
+
+    /**
+     * Sign out button click handler.
+     *
+     * @private
+     */
+    handleSignoutClick_: function(e) {
+      this.disabled = true;
+      chrome.send('signOutUser');
+      e.stopPropagation();
+    },
+
+    /**
+     * Shutdown button click handler.
+     *
+     * @private
+     */
+    handleShutdownClick_: function(e) {
+      chrome.send('shutdownSystem');
+      e.stopPropagation();
+    },
+
+    /**
+     * Cancel user adding button handler.
+     *
+     * @private
+     */
+    handleCancelMultipleSignInClick_: function(e) {
+      chrome.send('cancelUserAdding');
+      e.stopPropagation();
+    },
+
+    /**
+     * Add supervised user button handler.
+     *
+     * @private
+     */
+    handleAddSupervisedUserClick_: function(e) {
+      chrome.send('showSupervisedUserCreationScreen');
+      e.preventDefault();
+    },
+
+    /**
+     * Add supervised user key handler, ESC closes menu.
+     *
+     * @private
+     */
+    handleAddSupervisedUserKeyDown_: function(e) {
+      if (e.key == 'Escape' && this.isMoreSettingsActive) {
+        this.isMoreSettingsActive = false;
+        $('more-settings-button').focus();
+      }
+    },
+
+    /**
+     * If true then "Browse as Guest" button is shown.
+     *
+     * @type {boolean}
+     */
+    set showGuestButton(value) {
+      this.showGuest_ = value;
+      this.updateUI_();
+    },
+
+    set showCreateSupervisedButton(value) {
+      this.showCreateSupervised_ = value;
+      this.updateUI_();
+    },
+
+    /**
+     * If true the "Restart" button is shown.
+     *
+     * @type {boolean}
+     */
+    set showRebootButton(value) {
+      this.showReboot_ = value;
+      this.updateUI_();
+    },
+
+    /**
+     * If true the "Shutdown" button is shown.
+     *
+     * @type {boolean}
+     */
+    set showShutdownButton(value) {
+      this.showShutdown_ = value;
+      this.updateUI_();
+    },
+
+    /**
+     * Current header bar UI / sign in state.
+     *
+     * @type {number} state Current state of the sign-in screen (see
+     *       SIGNIN_UI_STATE).
+     */
+    get signinUIState() {
+      return this.signinUIState_;
+    },
+    set signinUIState(state) {
+      this.signinUIState_ = state;
+      this.updateUI_();
+    },
+
+    /**
+     * Update whether there are kiosk apps.
+     *
+     * @type {boolean}
+     */
+    set hasApps(value) {
+      this.hasApps_ = value;
+      this.updateUI_();
+    },
+
+    /**
+     * Updates visibility state of action buttons.
+     *
+     * @private
+     */
+    updateUI_: function() {
+      var gaiaIsActive = (this.signinUIState_ == SIGNIN_UI_STATE.GAIA_SIGNIN);
+      var enrollmentIsActive =
+          (this.signinUIState_ == SIGNIN_UI_STATE.ENROLLMENT);
+      var accountPickerIsActive =
+          (this.signinUIState_ == SIGNIN_UI_STATE.ACCOUNT_PICKER);
+      var supervisedUserCreationDialogIsActive =
+          (this.signinUIState_ ==
+           SIGNIN_UI_STATE.SUPERVISED_USER_CREATION_FLOW);
+      var wrongHWIDWarningIsActive =
+          (this.signinUIState_ == SIGNIN_UI_STATE.WRONG_HWID_WARNING);
+      var isSamlPasswordConfirm =
+          (this.signinUIState_ == SIGNIN_UI_STATE.SAML_PASSWORD_CONFIRM);
+      var isPasswordChangedUI =
+          (this.signinUIState_ == SIGNIN_UI_STATE.PASSWORD_CHANGED);
+      var isMultiProfilesUI =
+          (Oobe.getInstance().displayType == DISPLAY_TYPE.USER_ADDING);
+      var isLockScreen = (Oobe.getInstance().displayType == DISPLAY_TYPE.LOCK);
+      var errorScreenIsActive = (this.signinUIState_ == SIGNIN_UI_STATE.ERROR);
+
+      $('add-user-button').hidden = !accountPickerIsActive ||
+          isMultiProfilesUI || isLockScreen || errorScreenIsActive;
+      $('more-settings-header-bar-item').hidden = !this.showCreateSupervised_ ||
+          gaiaIsActive || isLockScreen || errorScreenIsActive ||
+          supervisedUserCreationDialogIsActive;
+      $('guest-user-header-bar-item').hidden = !this.showGuest_ ||
+          isLockScreen || supervisedUserCreationDialogIsActive ||
+          wrongHWIDWarningIsActive || isSamlPasswordConfirm ||
+          isMultiProfilesUI || (gaiaIsActive && $('gaia-signin').closable) ||
+          (enrollmentIsActive && !$('oauth-enrollment').isAtTheBeginning()) ||
+          (gaiaIsActive && !$('gaia-signin').isAtTheBeginning());
+      $('restart-header-bar-item').hidden = !this.showReboot_;
+      $('shutdown-header-bar-item').hidden = !this.showShutdown_;
+      $('sign-out-user-item').hidden = !isLockScreen;
+
+      $('add-user-header-bar-item').hidden = $('add-user-button').hidden;
+      $('apps-header-bar-item').hidden =
+          !this.hasApps_ || (!gaiaIsActive && !accountPickerIsActive);
+      $('cancel-multiple-sign-in-item').hidden = !isMultiProfilesUI;
+
+      if (!Oobe.getInstance().newKioskUI) {
+        if (!$('apps-header-bar-item').hidden)
+          $('show-apps-button').didShow();
+      }
+    },
+
+    /**
+     * Animates Header bar to hide from the screen.
+     *
+     * @param {function()} callback will be called once animation is finished.
+     */
+    animateOut: function(callback) {
+      var launcher = this;
+      launcher.addEventListener('transitionend', function f(e) {
+        launcher.removeEventListener('transitionend', f);
+        callback();
+      });
+      // Guard timer for 2 seconds + 200 ms + epsilon.
+      ensureTransitionEndEvent(launcher, 2250);
+
+      this.classList.remove('login-header-bar-animate-slow');
+      this.classList.add('login-header-bar-animate-fast');
+      this.classList.add('login-header-bar-hidden');
+    },
+
+    /**
+     * Animates Header bar to appear on the screen.
+     *
+     * @param {boolean} fast Whether the animation should complete quickly or
+     *     slowly.
+     * @param {function()} callback will be called once animation is finished.
+     */
+    animateIn: function(fast, callback) {
+      if (callback) {
+        var launcher = this;
+        launcher.addEventListener('transitionend', function f(e) {
+          launcher.removeEventListener('transitionend', f);
+          callback();
+        });
+        // Guard timer for 2 seconds + 200 ms + epsilon.
+        ensureTransitionEndEvent(launcher, 2250);
+      }
+
+      if (fast) {
+        this.classList.remove('login-header-bar-animate-slow');
+        this.classList.add('login-header-bar-animate-fast');
+      } else {
+        this.classList.remove('login-header-bar-animate-fast');
+        this.classList.add('login-header-bar-animate-slow');
+      }
+
+      this.classList.remove('login-header-bar-hidden');
+    },
+  };
+
+  /**
+   * Convenience wrapper of animateOut.
+   */
+  HeaderBar.animateOut = function(callback) {
+    $('login-header-bar').animateOut(callback);
+  };
+
+  /**
+   * Convenience wrapper of animateIn.
+   */
+  HeaderBar.animateIn = function(fast, callback) {
+    $('login-header-bar').animateIn(fast, callback);
+  };
+
+  return {HeaderBar: HeaderBar};
+});