MD Settings: cr/cros - Guest mode page visibility

chrome/browser/resources/settings/settings_main/settings_main.js

 // Copyright 2015 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
  * 'settings-main' displays the selected settings page.
  */
 Polymer({
   is: 'settings-main',
@@ skipping 36 matching lines @@
       value: function() {
         return {about: false, basic: false, advanced: false};
       },
     },
 
     toolbarSpinnerActive: {
       type: Boolean,
       value: false,
       notify: true,
     },
+
+    /**
+     * Dictionary defining page visibility.
+     * @type {!GuestModePageVisibility}
+     */
+    pageVisibility: {
+      type: Object,
+      value: function() { return {}; },
+    },
   },
 
   /** @override */
   created: function() {
     /** @private {!PromiseResolver} */
     this.resolver_ = new PromiseResolver;
     settings.main.rendered = this.resolver_.promise;
   },
 
   /** @override */
@@ skipping 30 matching lines @@
    * @private
    */
   arrowState_: function(opened) {
     return opened ? 'settings:arrow-drop-up' : 'cr:arrow-drop-down';
   },
 
   /**
    * @param {boolean} showBasicPage
    * @param {boolean} inSubpage
    * @return {boolean}
+   * @private
    */
   showAdvancedToggle_: function(showBasicPage, inSubpage) {
     return showBasicPage && !inSubpage;
   },
 
   /**
    * @param {!SettingsRoute} newRoute
    * @private
    */
   currentRouteChanged_: function(newRoute) {
     this.inSubpage_ = newRoute.subpage.length > 0;
     this.style.height = this.inSubpage_ ? '100%' : '';
 
     if (newRoute.page == 'about') {
       this.showPages_ = {about: true, basic: false, advanced: false};
     } else {
+
+      if (newRoute.page == 'advanced') {
+        assert(!this.pageVisibility ||
+            this.pageVisibility.advancedSettings !== false);
+      }
+
       this.showPages_ = {
         about: false,
         basic: newRoute.page == 'basic' || !this.inSubpage_,
         advanced: newRoute.page == 'advanced' ||
             (!this.inSubpage_ && this.advancedToggleExpanded_),
       };
 
       if (this.showPages_.advanced)
         this.advancedToggleExpanded_ = true;
     }
@@ skipping 28 matching lines @@
     this.showPages_ = {about: false, basic: true, advanced: true};
     setTimeout(function() {
       settings.getSearchManager().search(
           query, assert(this.$$('settings-basic-page')));
     }.bind(this), 0);
     setTimeout(function() {
       settings.getSearchManager().search(
           query, assert(this.$$('settings-advanced-page')));
     }.bind(this), 0);
   },
+
+  /**
+   * @param {(boolean|undefined)} visibility
+   * @return {boolean} True unless visibility is false.
+   * @private
+   */
+  showAdvancedSettings_: function(visibility) {
+    return visibility !== false;
+  },
 });