1 // Copyright 2013 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 "base/prefs/scoped_user_pref_update.h" 6 7 #include "base/logging.h" 8 #include "base/prefs/pref_notifier.h" 9 #include "base/prefs/pref_service.h" 10 11 namespace subtle { 12 13 ScopedUserPrefUpdateBase::ScopedUserPrefUpdateBase(PrefService* service, 14 const char* path) 15 : service_(service), 16 path_(path), 17 value_(NULL) {} 18 19 ScopedUserPrefUpdateBase::~ScopedUserPrefUpdateBase() { 20 Notify(); 21 } 22 23 Value* ScopedUserPrefUpdateBase::GetValueOfType(base::Value::Type type) { 24 if (!value_) 25 value_ = service_->GetMutableUserPref(path_.c_str(), type); 26 return value_; 27 } 28 29 void ScopedUserPrefUpdateBase::Notify() { 30 if (value_) { 31 service_->ReportUserPrefChanged(path_); 32 value_ = NULL; 33 } 34 } 35 36 } // namespace subtle 37
