Initial accounts options page.

chrome/browser/resources/options/preferences.js

 // Copyright (c) 2010 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.
 
 ///////////////////////////////////////////////////////////////////////////////
 // Preferences class:
 
 /**
  * Preferences class manages access to Chrome profile preferences.
  * @constructor
@@ skipping 55 matching lines @@
 /**
  * Sets value of a string preference.
  * and signals its changed value.
  * @param {string} name Preference name.
  * @param {string} value New preference value.
  */
 Preferences.setStringPref = function(name, value) {
   chrome.send('setStringPref', [name, value]);
 };
 
+/**
+ * Sets value of a JSON preference.
+ * and signals its changed value.
+ * @param {string} name Preference name.
+ * @param {string} value New preference value.
+ */
+Preferences.setObjectPref = function(name, value) {
+  chrome.send('setObjectPref', [name, JSON.stringify(value)]);
+};
+
 Preferences.prototype = {
   __proto__: cr.EventTarget.prototype,
 
   // Map of registered preferences.
   registeredPreferences_: {},
 
   /**
    * Adds an event listener to the target.
    * @param {string} type The name of the event.
    * @param {!Function|{handleEvent:Function}} handler The handler for the
@@ skipping 19 matching lines @@
   },
 
   /**
    * Helper function for flattening of dictionary passed via fetchPrefs
    * callback.
    * @param {string} prefix Preference name prefix.
    * @param {object} dict Map with preference values.
    */
   flattenMapAndDispatchEvent_: function(prefix, dict) {
     for (var prefName in dict) {
-      if (typeof dict[prefName] == 'object') {
+      if (typeof dict[prefName] == 'object' &&
+          !this.registeredPreferences_[prefix + prefName]) {
         this.flattenMapAndDispatchEvent_(prefix + prefName + '.',
             dict[prefName]);
       } else {
         var event = new cr.Event(prefix + prefName);
         event.value = dict[prefName];
         this.dispatchEvent(event);
       }
     }
   }
 };
@@ skipping 12 matching lines @@
  * notification[0] contains name of the change preference while its new value
  * is stored in notification[1].
  */
 Preferences.prefsChangedCallback = function(notification) {
   var event = new cr.Event(notification[0]);
   event.value = notification[1];
   Preferences.getInstance().dispatchEvent(event);
 };