components/pref_registry/pref_registry_syncable.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/pref_registry/pref_registry_syncable.h"
   6
   7 #include "base/files/file_path.h"
   8 #include "base/prefs/default_pref_store.h"
   9 #include "base/strings/string_number_conversions.h"
  10 #include "base/values.h"
  11
  12 namespace user_prefs {
  13
  14 PrefRegistrySyncable::PrefRegistrySyncable() {
  15 }
  16
  17 PrefRegistrySyncable::~PrefRegistrySyncable() {
  18 }
  19
  20 void PrefRegistrySyncable::SetSyncableRegistrationCallback(
  21     const SyncableRegistrationCallback& cb) {
  22   callback_ = cb;
  23 }
  24
  25 void PrefRegistrySyncable::OnPrefRegistered(const std::string& path,
  26                                             base::Value* default_value,
  27                                             uint32 flags) {
  28   // Tests that |flags| does not contain both SYNCABLE_PREF and
  29   // SYNCABLE_PRIORITY_PREF flags at the same time.
  30   DCHECK(!(flags & PrefRegistrySyncable::SYNCABLE_PREF) ||
  31          !(flags & PrefRegistrySyncable::SYNCABLE_PRIORITY_PREF));
  32
  33   if (flags & PrefRegistrySyncable::SYNCABLE_PREF ||
  34       flags & PrefRegistrySyncable::SYNCABLE_PRIORITY_PREF) {
  35     if (!callback_.is_null())
  36       callback_.Run(path, flags);
  37   }
  38 }
  39
  40 scoped_refptr<PrefRegistrySyncable> PrefRegistrySyncable::ForkForIncognito() {
  41   // TODO(joi): We can directly reuse the same PrefRegistry once
  42   // PrefService no longer registers for callbacks on registration and
  43   // unregistration.
  44   scoped_refptr<PrefRegistrySyncable> registry(new PrefRegistrySyncable());
  45   registry->defaults_ = defaults_;
  46   return registry;
  47 }
  48
  49 }  // namespace user_prefs