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      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 "base/prefs/value_map_pref_store.h"
      6 
      7 #include <algorithm>
      8 
      9 #include "base/stl_util.h"
     10 #include "base/values.h"
     11 
     12 ValueMapPrefStore::ValueMapPrefStore() {}
     13 
     14 bool ValueMapPrefStore::GetValue(const std::string& key,
     15                                  const base::Value** value) const {
     16   return prefs_.GetValue(key, value);
     17 }
     18 
     19 void ValueMapPrefStore::AddObserver(PrefStore::Observer* observer) {
     20   observers_.AddObserver(observer);
     21 }
     22 
     23 void ValueMapPrefStore::RemoveObserver(PrefStore::Observer* observer) {
     24   observers_.RemoveObserver(observer);
     25 }
     26 
     27 size_t ValueMapPrefStore::NumberOfObservers() const {
     28   return observers_.size();
     29 }
     30 
     31 ValueMapPrefStore::~ValueMapPrefStore() {}
     32 
     33 void ValueMapPrefStore::SetValue(const std::string& key, base::Value* value) {
     34   if (prefs_.SetValue(key, value))
     35     FOR_EACH_OBSERVER(Observer, observers_, OnPrefValueChanged(key));
     36 }
     37 
     38 void ValueMapPrefStore::RemoveValue(const std::string& key) {
     39   if (prefs_.RemoveValue(key))
     40     FOR_EACH_OBSERVER(Observer, observers_, OnPrefValueChanged(key));
     41 }
     42 
     43 void ValueMapPrefStore::NotifyInitializationCompleted() {
     44   FOR_EACH_OBSERVER(Observer, observers_, OnInitializationCompleted(true));
     45 }
     46