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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 #ifndef BASE_PREFS_VALUE_MAP_PREF_STORE_H_ | |
| 6 #define BASE_PREFS_VALUE_MAP_PREF_STORE_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 #include <string> | |
| 10 | |
| 11 #include "base/basictypes.h" | |
| 12 #include "base/observer_list.h" | |
| 13 #include "base/prefs/base_prefs_export.h" | |
| 14 #include "base/prefs/pref_value_map.h" | |
| 15 #include "base/prefs/writeable_pref_store.h" | |
| 16 | |
| 17 // A basic PrefStore implementation that uses a simple name-value map for | |
| 18 // storing the preference values. | |
| 19 class BASE_PREFS_EXPORT ValueMapPrefStore : public WriteablePrefStore { | |
| 20 public: | |
| 21 ValueMapPrefStore(); | |
| 22 | |
| 23 // PrefStore overrides: | |
| 24 bool GetValue(const std::string& key, | |
| 25 const base::Value** value) const override; | |
| 26 void AddObserver(PrefStore::Observer* observer) override; | |
| 27 void RemoveObserver(PrefStore::Observer* observer) override; | |
| 28 bool HasObservers() const override; | |
| 29 | |
| 30 // WriteablePrefStore overrides: | |
| 31 void SetValue(const std::string& key, | |
| 32 scoped_ptr<base::Value> value, | |
| 33 uint32 flags) override; | |
| 34 void RemoveValue(const std::string& key, uint32 flags) override; | |
| 35 bool GetMutableValue(const std::string& key, base::Value** value) override; | |
| 36 void ReportValueChanged(const std::string& key, uint32 flags) override; | |
| 37 void SetValueSilently(const std::string& key, | |
| 38 scoped_ptr<base::Value> value, | |
| 39 uint32 flags) override; | |
| 40 | |
| 41 protected: | |
| 42 ~ValueMapPrefStore() override; | |
| 43 | |
| 44 // Notify observers about the initialization completed event. | |
| 45 void NotifyInitializationCompleted(); | |
| 46 | |
| 47 private: | |
| 48 PrefValueMap prefs_; | |
| 49 | |
| 50 base::ObserverList<PrefStore::Observer, true> observers_; | |
| 51 | |
| 52 DISALLOW_COPY_AND_ASSIGN(ValueMapPrefStore); | |
| 53 }; | |
| 54 | |
| 55 #endif // BASE_PREFS_VALUE_MAP_PREF_STORE_H_ | |
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