Run clang-format on .js files in c/b/r/settings

chrome/browser/resources/settings/prefs/prefs.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-prefs' exposes a singleton model of Chrome settings and
  * preferences, which listens to changes to Chrome prefs whitelisted in
  * chrome.settingsPrivate. When changing prefs in this element's 'prefs'
  * property via the UI, the singleton model tries to set those preferences in
  * Chrome. Whether or not the calls to settingsPrivate.setPref succeed, 'prefs'
  * is eventually consistent with the Chrome pref store.
  */
 
 (function() {
-  'use strict';
-
-  /**
-   * Checks whether two values are recursively equal. Only compares serializable
-   * data (primitives, serializable arrays and serializable objects).
-   * @param {*} val1 Value to compare.
-   * @param {*} val2 Value to compare with val1.
-   * @return {boolean} True if the values are recursively equal.
-   */
-  function deepEqual(val1, val2) {
-    if (val1 === val2)
-      return true;
-
-    if (Array.isArray(val1) || Array.isArray(val2)) {
-      if (!Array.isArray(val1) || !Array.isArray(val2))
-        return false;
-      return arraysEqual(/** @type {!Array} */(val1),
-                         /** @type {!Array} */(val2));
-    }
-
-    if (val1 instanceof Object && val2 instanceof Object)
-      return objectsEqual(val1, val2);
-
+'use strict';
+
+/**
+ * Checks whether two values are recursively equal. Only compares serializable
+ * data (primitives, serializable arrays and serializable objects).
+ * @param {*} val1 Value to compare.
+ * @param {*} val2 Value to compare with val1.
+ * @return {boolean} True if the values are recursively equal.
+ */
+function deepEqual(val1, val2) {
+  if (val1 === val2)
+    return true;
+
+  if (Array.isArray(val1) || Array.isArray(val2)) {
+    if (!Array.isArray(val1) || !Array.isArray(val2))
+      return false;
+    return arraysEqual(
+        /** @type {!Array} */ (val1),
+        /** @type {!Array} */ (val2));
+  }
+
+  if (val1 instanceof Object && val2 instanceof Object)
+    return objectsEqual(val1, val2);
+
+  return false;
+}
+
+/**
+ * @param {!Array} arr1
+ * @param {!Array} arr2
+ * @return {boolean} True if the arrays are recursively equal.
+ */
+function arraysEqual(arr1, arr2) {
+  if (arr1.length != arr2.length)
     return false;
+
+  for (var i = 0; i < arr1.length; i++) {
+    if (!deepEqual(arr1[i], arr2[i]))
+      return false;
   }
 
-  /**
-   * @param {!Array} arr1
-   * @param {!Array} arr2
-   * @return {boolean} True if the arrays are recursively equal.
-   */
-  function arraysEqual(arr1, arr2) {
-    if (arr1.length != arr2.length)
+  return true;
+}
+
+/**
+ * @param {!Object} obj1
+ * @param {!Object} obj2
+ * @return {boolean} True if the objects are recursively equal.
+ */
+function objectsEqual(obj1, obj2) {
+  var keys1 = Object.keys(obj1);
+  var keys2 = Object.keys(obj2);
+  if (keys1.length != keys2.length)
+    return false;
+
+  for (var i = 0; i < keys1.length; i++) {
+    var key = keys1[i];
+    if (!deepEqual(obj1[key], obj2[key]))
       return false;
-
-    for (var i = 0; i < arr1.length; i++) {
-      if (!deepEqual(arr1[i], arr2[i]))
-        return false;
-    }
-
-    return true;
   }
 
-  /**
-   * @param {!Object} obj1
-   * @param {!Object} obj2
-   * @return {boolean} True if the objects are recursively equal.
-   */
-  function objectsEqual(obj1, obj2) {
-    var keys1 = Object.keys(obj1);
-    var keys2 = Object.keys(obj2);
-    if (keys1.length != keys2.length)
-      return false;
-
-    for (var i = 0; i < keys1.length; i++) {
-      var key = keys1[i];
-      if (!deepEqual(obj1[key], obj2[key]))
-        return false;
-    }
-
-    return true;
+  return true;
+}
+
+/**
+ * Returns a recursive copy of the value.
+ * @param {*} val Value to copy. Should be a primitive or only contain
+ *     serializable data (primitives, serializable arrays and
+ *     serializable objects).
+ * @return {*} A deep copy of the value.
+ */
+function deepCopy(val) {
+  if (!(val instanceof Object))
+    return val;
+  return Array.isArray(val) ? deepCopyArray(/** @type {!Array} */ (val)) :
+                              deepCopyObject(val);
+}
+
+/**
+ * @param {!Array} arr
+ * @return {!Array} Deep copy of the array.
+ */
+function deepCopyArray(arr) {
+  var copy = [];
+  for (var i = 0; i < arr.length; i++)
+    copy.push(deepCopy(arr[i]));
+  return copy;
+}
+
+/**
+ * @param {!Object} obj
+ * @return {!Object} Deep copy of the object.
+ */
+function deepCopyObject(obj) {
+  var copy = {};
+  var keys = Object.keys(obj);
+  for (var i = 0; i < keys.length; i++) {
+    var key = keys[i];
+    copy[key] = deepCopy(obj[key]);
   }
-
-  /**
-   * Returns a recursive copy of the value.
-   * @param {*} val Value to copy. Should be a primitive or only contain
-   *     serializable data (primitives, serializable arrays and
-   *     serializable objects).
-   * @return {*} A deep copy of the value.
-   */
-  function deepCopy(val) {
-    if (!(val instanceof Object))
-      return val;
-    return Array.isArray(val) ? deepCopyArray(/** @type {!Array} */(val)) :
-        deepCopyObject(val);
-  }
-
-  /**
-   * @param {!Array} arr
-   * @return {!Array} Deep copy of the array.
-   */
-  function deepCopyArray(arr) {
-    var copy = [];
-    for (var i = 0; i < arr.length; i++)
-      copy.push(deepCopy(arr[i]));
-    return copy;
-  }
-
-  /**
-   * @param {!Object} obj
-   * @return {!Object} Deep copy of the object.
-   */
-  function deepCopyObject(obj) {
-    var copy = {};
-    var keys = Object.keys(obj);
-    for (var i = 0; i < keys.length; i++) {
-      var key = keys[i];
-      copy[key] = deepCopy(obj[key]);
-    }
-    return copy;
-  }
-
-  Polymer({
-    is: 'settings-prefs',
-
-    properties: {
-      /**
-       * Object containing all preferences, for use by Polymer controls.
-       * @type {Object|undefined}
-       */
-      prefs: {
-        type: Object,
-        notify: true,
-      },
-
-      /**
-       * Map of pref keys to values representing the state of the Chrome
-       * pref store as of the last update from the API.
-       * @type {Object<*>}
-       * @private
-       */
-      lastPrefValues_: {
-        type: Object,
-        value: function() { return {}; },
+  return copy;
+}
+
+Polymer({
+  is: 'settings-prefs',
+
+  properties: {
+    /**
+     * Object containing all preferences, for use by Polymer controls.
+     * @type {Object|undefined}
+     */
+    prefs: {
+      type: Object,
+      notify: true,
+    },
+
+    /**
+     * Map of pref keys to values representing the state of the Chrome
+     * pref store as of the last update from the API.
+     * @type {Object<*>}
+     * @private
+     */
+    lastPrefValues_: {
+      type: Object,
+      value: function() {
+        return {};
       },
     },
-
-    observers: [
-      'prefsChanged_(prefs.*)',
-    ],
-
-    /** @type {SettingsPrivate} */
-    settingsApi_: /** @type {SettingsPrivate} */(chrome.settingsPrivate),
-
-    /** @override */
-    created: function() {
-      if (!CrSettingsPrefs.deferInitialization)
-        this.initialize();
-    },
-
-    /** @override */
-    detached: function() {
-      CrSettingsPrefs.resetForTesting();
-    },
-
-    /**
-     * @param {SettingsPrivate=} opt_settingsApi SettingsPrivate implementation
-     *     to use (chrome.settingsPrivate by default).
-     */
-    initialize: function(opt_settingsApi) {
-      // Only initialize once (or after resetForTesting() is called).
-      if (this.initialized_)
-        return;
-      this.initialized_ = true;
-
-      if (opt_settingsApi)
-        this.settingsApi_ = opt_settingsApi;
-
-      /** @private {function(!Array<!chrome.settingsPrivate.PrefObject>)} */
-      this.boundPrefsChanged_ = this.onSettingsPrivatePrefsChanged_.bind(this);
-      this.settingsApi_.onPrefsChanged.addListener(this.boundPrefsChanged_);
-      this.settingsApi_.getAllPrefs(
-          this.onSettingsPrivatePrefsFetched_.bind(this));
-    },
-
-    /**
-     * @param {!{path: string}} e
-     * @private
-     */
-    prefsChanged_: function(e) {
-      // |prefs| can be directly set or unset in tests.
-      if (!CrSettingsPrefs.isInitialized || e.path == 'prefs')
-        return;
-
-      var key = this.getPrefKeyFromPath_(e.path);
-      var prefStoreValue = this.lastPrefValues_[key];
-
-      var prefObj = /** @type {chrome.settingsPrivate.PrefObject} */(
-          this.get(key, this.prefs));
-
-      // If settingsPrivate already has this value, ignore it. (Otherwise,
-      // a change event from settingsPrivate could make us call
-      // settingsPrivate.setPref and potentially trigger an IPC loop.)
-      if (!deepEqual(prefStoreValue, prefObj.value)) {
-        this.settingsApi_.setPref(
-            key,
-            prefObj.value,
-            /* pageId */ '',
-            /* callback */ this.setPrefCallback_.bind(this, key));
+  },
+
+  observers: [
+    'prefsChanged_(prefs.*)',
+  ],
+
+  /** @type {SettingsPrivate} */
+  settingsApi_: /** @type {SettingsPrivate} */ (chrome.settingsPrivate),
+
+  /** @override */
+  created: function() {
+    if (!CrSettingsPrefs.deferInitialization)
+      this.initialize();
+  },
+
+  /** @override */
+  detached: function() {
+    CrSettingsPrefs.resetForTesting();
+  },
+
+  /**
+   * @param {SettingsPrivate=} opt_settingsApi SettingsPrivate implementation
+   *     to use (chrome.settingsPrivate by default).
+   */
+  initialize: function(opt_settingsApi) {
+    // Only initialize once (or after resetForTesting() is called).
+    if (this.initialized_)
+      return;
+    this.initialized_ = true;
+
+    if (opt_settingsApi)
+      this.settingsApi_ = opt_settingsApi;
+
+    /** @private {function(!Array<!chrome.settingsPrivate.PrefObject>)} */
+    this.boundPrefsChanged_ = this.onSettingsPrivatePrefsChanged_.bind(this);
+    this.settingsApi_.onPrefsChanged.addListener(this.boundPrefsChanged_);
+    this.settingsApi_.getAllPrefs(
+        this.onSettingsPrivatePrefsFetched_.bind(this));
+  },
+
+  /**
+   * @param {!{path: string}} e
+   * @private
+   */
+  prefsChanged_: function(e) {
+    // |prefs| can be directly set or unset in tests.
+    if (!CrSettingsPrefs.isInitialized || e.path == 'prefs')
+      return;
+
+    var key = this.getPrefKeyFromPath_(e.path);
+    var prefStoreValue = this.lastPrefValues_[key];
+
+    var prefObj = /** @type {chrome.settingsPrivate.PrefObject} */ (
+        this.get(key, this.prefs));
+
+    // If settingsPrivate already has this value, ignore it. (Otherwise,
+    // a change event from settingsPrivate could make us call
+    // settingsPrivate.setPref and potentially trigger an IPC loop.)
+    if (!deepEqual(prefStoreValue, prefObj.value)) {
+      this.settingsApi_.setPref(
+          key, prefObj.value,
+          /* pageId */ '',
+          /* callback */ this.setPrefCallback_.bind(this, key));
+    }
+  },
+
+  /**
+   * Called when prefs in the underlying Chrome pref store are changed.
+   * @param {!Array<!chrome.settingsPrivate.PrefObject>} prefs
+   *     The prefs that changed.
+   * @private
+   */
+  onSettingsPrivatePrefsChanged_: function(prefs) {
+    if (CrSettingsPrefs.isInitialized)
+      this.updatePrefs_(prefs);
+  },
+
+  /**
+   * Called when prefs are fetched from settingsPrivate.
+   * @param {!Array<!chrome.settingsPrivate.PrefObject>} prefs
+   * @private
+   */
+  onSettingsPrivatePrefsFetched_: function(prefs) {
+    this.updatePrefs_(prefs);
+    CrSettingsPrefs.setInitialized();
+  },
+
+  /**
+   * Checks the result of calling settingsPrivate.setPref.
+   * @param {string} key The key used in the call to setPref.
+   * @param {boolean} success True if setting the pref succeeded.
+   * @private
+   */
+  setPrefCallback_: function(key, success) {
+    if (!success)
+      this.refresh(key);
+  },
+
+  /**
+   * Get the current pref value from chrome.settingsPrivate to ensure the UI
+   * stays up to date.
+   * @param {string} key
+   */
+  refresh: function(key) {
+    this.settingsApi_.getPref(key, function(pref) {
+      this.updatePrefs_([pref]);
+    }.bind(this));
+  },
+
+  /**
+   * Updates the prefs model with the given prefs.
+   * @param {!Array<!chrome.settingsPrivate.PrefObject>} newPrefs
+   * @private
+   */
+  updatePrefs_: function(newPrefs) {
+    // Use the existing prefs object or create it.
+    var prefs = this.prefs || {};
+    newPrefs.forEach(function(newPrefObj) {
+      // Use the PrefObject from settingsPrivate to create a copy in
+      // lastPrefValues_ at the pref's key.
+      this.lastPrefValues_[newPrefObj.key] = deepCopy(newPrefObj.value);
+
+      if (!deepEqual(this.get(newPrefObj.key, prefs), newPrefObj)) {
+        // Add the pref to |prefs|.
+        cr.exportPath(newPrefObj.key, newPrefObj, prefs);
+        // If this.prefs already exists, notify listeners of the change.
+        if (prefs == this.prefs)
+          this.notifyPath('prefs.' + newPrefObj.key, newPrefObj);
       }
-    },
-
-    /**
-     * Called when prefs in the underlying Chrome pref store are changed.
-     * @param {!Array<!chrome.settingsPrivate.PrefObject>} prefs
-     *     The prefs that changed.
-     * @private
-     */
-    onSettingsPrivatePrefsChanged_: function(prefs) {
-      if (CrSettingsPrefs.isInitialized)
-        this.updatePrefs_(prefs);
-    },
-
-    /**
-     * Called when prefs are fetched from settingsPrivate.
-     * @param {!Array<!chrome.settingsPrivate.PrefObject>} prefs
-     * @private
-     */
-    onSettingsPrivatePrefsFetched_: function(prefs) {
-      this.updatePrefs_(prefs);
-      CrSettingsPrefs.setInitialized();
-    },
-
-    /**
-     * Checks the result of calling settingsPrivate.setPref.
-     * @param {string} key The key used in the call to setPref.
-     * @param {boolean} success True if setting the pref succeeded.
-     * @private
-     */
-    setPrefCallback_: function(key, success) {
-      if (!success)
-        this.refresh(key);
-    },
-
-    /**
-     * Get the current pref value from chrome.settingsPrivate to ensure the UI
-     * stays up to date.
-     * @param {string} key
-     */
-    refresh: function(key) {
-      this.settingsApi_.getPref(key, function(pref) {
-        this.updatePrefs_([pref]);
-      }.bind(this));
-    },
-
-    /**
-     * Updates the prefs model with the given prefs.
-     * @param {!Array<!chrome.settingsPrivate.PrefObject>} newPrefs
-     * @private
-     */
-    updatePrefs_: function(newPrefs) {
-      // Use the existing prefs object or create it.
-      var prefs = this.prefs || {};
-      newPrefs.forEach(function(newPrefObj) {
-        // Use the PrefObject from settingsPrivate to create a copy in
-        // lastPrefValues_ at the pref's key.
-        this.lastPrefValues_[newPrefObj.key] = deepCopy(newPrefObj.value);
-
-        if (!deepEqual(this.get(newPrefObj.key, prefs), newPrefObj)) {
-          // Add the pref to |prefs|.
-          cr.exportPath(newPrefObj.key, newPrefObj, prefs);
-          // If this.prefs already exists, notify listeners of the change.
-          if (prefs == this.prefs)
-            this.notifyPath('prefs.' + newPrefObj.key, newPrefObj);
-        }
-      }, this);
-      if (!this.prefs)
-        this.prefs = prefs;
-    },
-
-    /**
-     * Given a 'property-changed' path, returns the key of the preference the
-     * path refers to. E.g., if the path of the changed property is
-     * 'prefs.search.suggest_enabled.value', the key of the pref that changed is
-     * 'search.suggest_enabled'.
-     * @param {string} path
-     * @return {string}
-     * @private
-     */
-    getPrefKeyFromPath_: function(path) {
-      // Skip the first token, which refers to the member variable (this.prefs).
-      var parts = path.split('.');
-      assert(parts.shift() == 'prefs', "Path doesn't begin with 'prefs'");
-
-      for (var i = 1; i <= parts.length; i++) {
-        var key = parts.slice(0, i).join('.');
-        // The lastPrefValues_ keys match the pref keys.
-        if (this.lastPrefValues_.hasOwnProperty(key))
-          return key;
-      }
-      return '';
-    },
-
-    /**
-     * Resets the element so it can be re-initialized with a new prefs state.
-     */
-    resetForTesting: function() {
-      if (!this.initialized_)
-        return;
-      this.prefs = undefined;
-      this.lastPrefValues_ = {};
-      this.initialized_ = false;
-      // Remove the listener added in initialize().
-      this.settingsApi_.onPrefsChanged.removeListener(this.boundPrefsChanged_);
-      this.settingsApi_ =
-          /** @type {SettingsPrivate} */(chrome.settingsPrivate);
-    },
-  });
+    }, this);
+    if (!this.prefs)
+      this.prefs = prefs;
+  },
+
+  /**
+   * Given a 'property-changed' path, returns the key of the preference the
+   * path refers to. E.g., if the path of the changed property is
+   * 'prefs.search.suggest_enabled.value', the key of the pref that changed is
+   * 'search.suggest_enabled'.
+   * @param {string} path
+   * @return {string}
+   * @private
+   */
+  getPrefKeyFromPath_: function(path) {
+    // Skip the first token, which refers to the member variable (this.prefs).
+    var parts = path.split('.');
+    assert(parts.shift() == 'prefs', 'Path doesn\'t begin with \'prefs\'');
+
+    for (var i = 1; i <= parts.length; i++) {
+      var key = parts.slice(0, i).join('.');
+      // The lastPrefValues_ keys match the pref keys.
+      if (this.lastPrefValues_.hasOwnProperty(key))
+        return key;
+    }
+    return '';
+  },
+
+  /**
+   * Resets the element so it can be re-initialized with a new prefs state.
+   */
+  resetForTesting: function() {
+    if (!this.initialized_)
+      return;
+    this.prefs = undefined;
+    this.lastPrefValues_ = {};
+    this.initialized_ = false;
+    // Remove the listener added in initialize().
+    this.settingsApi_.onPrefsChanged.removeListener(this.boundPrefsChanged_);
+    this.settingsApi_ =
+        /** @type {SettingsPrivate} */ (chrome.settingsPrivate);
+  },
+});
 })();