[cros New-GAIA] Fix load animation.

chrome/browser/resources/chromeos/login/screen_gaia_signin.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 Oobe signin screen implementation.
  */
 
 login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
   // Gaia loading time after which error message must be displayed and
   // lazy portal check should be fired.
   /** @const */ var GAIA_LOADING_PORTAL_SUSSPECT_TIME_SEC = 7;
 
+  // GAIA animation guard timer. Started when GAIA page is loaded
+  // (Authenticator 'ready' event) and is intended to guard against edge cases
+  // when 'showView' message is not generated/received.
+  /** @const */ var GAIA_ANIMATION_GUARD_MILLISEC = 300;
+
   // Maximum Gaia loading time in seconds.
   /** @const */ var MAX_GAIA_LOADING_TIME_SEC = 60;
 
   /** @const */ var HELP_TOPIC_ENTERPRISE_REPORTING = 2535613;
 
   // The help topic regarding user not being in the whitelist.
   /** @const */ var HELP_CANT_ACCESS_ACCOUNT = 188036;
 
   return {
     EXTERNAL_API: [
@@ skipping 47 matching lines @@
     isEnrollingConsumerManagement_: false,
 
     /**
      * Timer id of pending load.
      * @type {number}
      * @private
      */
     loadingTimer_: undefined,
 
     /**
+     * Timer id of a guard timer that is fired in case 'showView' message
+     * is not received from GAIA.
+     * @type {number}
+     * @private
+     */
+    loadAnimationGuardTimer_: undefined,
+
+    /**
+     * Whether we've processed 'showView' message - either from GAIA or from
+     * guard timer.
+     * @type {boolean}
+     * @private
+     */
+    showViewProcessed_: undefined,
+
+    /**
      * Whether user can cancel Gaia screen.
      * @type {boolean}
      * @private
      */
     cancelAllowed_: undefined,
 
     /**
      * Whether we should show user pods on the login screen.
      * @type {boolean}
      * @private
@@ skipping 122 matching lines @@
       $('gaia-loading').hidden = !show;
       if (this.isNewGaiaFlow && this.isLocal) {
         $('newgaia-offline-login').hidden = show;
       } else {
         $('signin-frame').hidden = show;
       }
       $('signin-right').hidden = show;
       $('enterprise-info-container').hidden = show;
       $('gaia-signin-divider').hidden = show;
       this.classList.toggle('loading', show);
+      $('signin-frame').classList.remove('show');
       if (!show)
         this.classList.remove('auth-completed');
     },
 
     /**
      * Handler for Gaia loading suspiciously long timeout.
      * @private
      */
     onLoadingSuspiciouslyLong_: function() {
       if (this != Oobe.getInstance().currentScreen)
         return;
       chrome.send('showLoadingTimeoutError');
-      this.loadingTimer_ = window.setTimeout(
+      this.loadingTimer_ = setTimeout(
           this.onLoadingTimeOut_.bind(this),
           (MAX_GAIA_LOADING_TIME_SEC - GAIA_LOADING_PORTAL_SUSSPECT_TIME_SEC) *
           1000);
     },
 
     /**
      * Handler for Gaia loading timeout.
      * @private
      */
     onLoadingTimeOut_: function() {
       this.loadingTimer_ = undefined;
       chrome.send('showLoadingTimeoutError');
     },
 
     /**
      * Clears loading timer.
      * @private
      */
     clearLoadingTimer_: function() {
       if (this.loadingTimer_) {
-        window.clearTimeout(this.loadingTimer_);
+        clearTimeout(this.loadingTimer_);
         this.loadingTimer_ = undefined;
       }
     },
 
     /**
      * Sets up loading timer.
      * @private
      */
     startLoadingTimer_: function() {
       this.clearLoadingTimer_();
-      this.loadingTimer_ = window.setTimeout(
+      this.loadingTimer_ = setTimeout(
           this.onLoadingSuspiciouslyLong_.bind(this),
           GAIA_LOADING_PORTAL_SUSSPECT_TIME_SEC * 1000);
     },
 
     /**
+     * Handler for GAIA animation guard timer.
+     * @private
+     */
+    onLoadAnimationGuardTimer_: function() {
+      this.loadAnimationGuardTimer_ = undefined;
+      this.onShowView_();
+    },
+
+    /**
+     * Clears GAIA animation guard timer.
+     * @private
+     */
+    clearLoadAnimationGuardTimer_: function() {
+      if (this.loadAnimationGuardTimer_) {
+        clearTimeout(this.loadAnimationGuardTimer_);
+        this.loadAnimationGuardTimer_ = undefined;
+      }
+    },
+
+    /**
+     * Sets up GAIA animation guard timer.
+     * @private
+     */
+    startLoadAnimationGuardTimer_: function() {
+      this.clearLoadAnimationGuardTimer_();
+      this.loadAnimationGuardTimer_ = setTimeout(
+          this.onLoadAnimationGuardTimer_.bind(this),
+          GAIA_ANIMATION_GUARD_MILLISEC);
+    },
+
+    /**
      * Whether Gaia is loading.
      * @type {boolean}
      */
     get loading() {
       return !$('gaia-loading').hidden;
     },
     set loading(loading) {
       if (loading == this.loading)
         return;
 
@@ skipping 206 matching lines @@
         if (this.isNewGaiaFlow)
           $('close-button-item').hidden = !(isSAML || this.cancelAllowed_);
       }
     },
 
     /**
      * Invoked when the auth host emits 'ready' event.
      * @private
      */
     onAuthReady_: function() {
+      showViewProcessed_ = false;
+      if (this.isNewGaiaFlow)
+        this.startLoadAnimationGuardTimer_();
+
+      this.clearLoadingTimer_();
       this.loading = false;
-      this.clearLoadingTimer_();
 
-      // Show deferred error bubble.
-      if (this.errorBubble_) {
-        this.showErrorBubble(this.errorBubble_[0], this.errorBubble_[1]);
-        this.errorBubble_ = undefined;
-      }
-
-      chrome.send('loginWebuiReady');
-      chrome.send('loginVisible', ['gaia-signin']);
+      if (!this.isNewGaiaFlow)
+        this.onLoginUIVisible_();
 
       // Warm up the user images screen.
       Oobe.getInstance().preloadScreen({id: SCREEN_USER_IMAGE_PICKER});
     },
 
     /**
      * Invoked when the auth host emits 'dialogShown' event.
      * @private
      */
     onDialogShown_: function() {
@@ skipping 12 matching lines @@
 
     /**
      * Invoked when the auth host emits 'backButton' event.
      * @private
      */
     onBackButton_: function(e) {
       $('back-button-item').hidden = !e.detail;
     },
 
     /**
-     * Invoked when the auth host emits 'showView' event.
+     * Invoked when the auth host emits 'showView' event or when corresponding
+     * guard time fires.
      * @private
      */
     onShowView_: function(e) {
+      if (showViewProcessed_)
+        return;
+
+      showViewProcessed_ = true;
+      this.clearLoadAnimationGuardTimer_();
       $('signin-frame').classList.add('show');
+      this.onLoginUIVisible_();
     },
 
     /**
+     * Called when UI is shown.
+     * @private
+     */
+    onLoginUIVisible_: function() {
+      // Show deferred error bubble.
+      if (this.errorBubble_) {
+        this.showErrorBubble(this.errorBubble_[0], this.errorBubble_[1]);
+        this.errorBubble_ = undefined;
+      }
+
+      chrome.send('loginWebuiReady');
+      chrome.send('loginVisible', ['gaia-signin']);
+    },
+
+    /**
      * Invoked when the user has successfully authenticated via SAML, the
      * principals API was not used and the auth host needs the user to confirm
      * the scraped password.
      * @param {number} passwordCount The number of passwords that were scraped.
      * @private
      */
     onAuthConfirmPassword_: function(passwordCount) {
       this.loading = true;
       Oobe.getInstance().headerHidden = false;
 
@@ skipping 291 matching lines @@
       }
 
       this.classList.toggle('whitelist-error', show);
       this.loading = !show;
 
       if (!show)
         Oobe.showSigninUI();
     },
   };
 });