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 45 matching lines @@
     showAboutPage_: {
       type: Boolean,
       value: false,
     },
 
     toolbarSpinnerActive: {
       type: Boolean,
       value: false,
       notify: true,
     },
+
+    /**
+     * Dictionary defining page visibility.
+     * @type {!GuestModePageVisibility}
+     */
+    pageVisibility: {
+      type: Object,
+      value: function() { return {}; },

[Moe, 2016/07/22 16:59:56]

michaelpg@, I had to bring this back b/c dom-if doesn't like being bound to
undefined properties. Its effect should be very local since advanced_page and
basic_page both already have SettingsPageVisibility behavior in which
pageVisibility has a default {} value.

+    },
   },
 
   /** @override */
   created: function() {
     /** @private {!PromiseResolver} */
     this.resolver_ = new PromiseResolver;
     settings.main.rendered = this.resolver_.promise;
   },
 
   /** @override */
@@ skipping 40 matching lines @@
    */
   currentRouteChanged_: function(newRoute) {
     var isSubpage = !!newRoute.subpage.length;
 
     this.showAboutPage_ = newRoute.page == 'about';
 
     this.showAdvancedToggle_ = !this.showAboutPage_ && !isSubpage;
 
     this.showBasicPage_ = this.showAdvancedToggle_ || newRoute.page == 'basic';
 
+    if (newRoute.page == 'advanced') {
+      assert(this.showAdvancedSettings(this.pageVisibility.advancedSettings));
+    }
+
     this.showAdvancedPage_ =
         (this.isAdvancedMenuOpen_ && this.showAdvancedToggle_) ||
         newRoute.page == 'advanced';
 
     this.style.height = isSubpage ? '100%' : '';
   },
 
   /** @private */
   toggleAdvancedPage_: function() {
     this.fire('toggle-advanced-page', !this.isAdvancedMenuOpen_);
@@ skipping 25 matching lines @@
       settings.getSearchManager().search(
           query, assert(this.$$('settings-basic-page')));
     }.bind(this), 0);
 
     this.showAdvancedPage_ = true;
     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.
+   */
+  showAdvancedSettings: function(visibility) {
+    return visibility !== false;
+  },
 });