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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // TODO(brettw) remove this forwarding header when prefs is completely moved to | 5 #ifndef BASE_PREFS_DEFAULT_PREF_STORE_H_ |
6 // components. | 6 #define BASE_PREFS_DEFAULT_PREF_STORE_H_ |
7 #include "components/prefs/default_pref_store.h" | 7 |
| 8 #include <string> |
| 9 |
| 10 #include "base/macros.h" |
| 11 #include "base/observer_list.h" |
| 12 #include "base/prefs/base_prefs_export.h" |
| 13 #include "base/prefs/pref_store.h" |
| 14 #include "base/prefs/pref_value_map.h" |
| 15 #include "base/values.h" |
| 16 |
| 17 // Used within a PrefRegistry to keep track of default preference values. |
| 18 class BASE_PREFS_EXPORT DefaultPrefStore : public PrefStore { |
| 19 public: |
| 20 typedef PrefValueMap::const_iterator const_iterator; |
| 21 |
| 22 DefaultPrefStore(); |
| 23 |
| 24 // PrefStore implementation: |
| 25 bool GetValue(const std::string& key, |
| 26 const base::Value** result) const override; |
| 27 void AddObserver(PrefStore::Observer* observer) override; |
| 28 void RemoveObserver(PrefStore::Observer* observer) override; |
| 29 bool HasObservers() const override; |
| 30 |
| 31 // Sets a |value| for |key|. Should only be called if a value has not been |
| 32 // set yet; otherwise call ReplaceDefaultValue(). |
| 33 void SetDefaultValue(const std::string& key, scoped_ptr<base::Value> value); |
| 34 |
| 35 // Replaces the the value for |key| with a new value. Should only be called |
| 36 // if a value has alreday been set; otherwise call SetDefaultValue(). |
| 37 void ReplaceDefaultValue(const std::string& key, |
| 38 scoped_ptr<base::Value> value); |
| 39 |
| 40 const_iterator begin() const; |
| 41 const_iterator end() const; |
| 42 |
| 43 private: |
| 44 ~DefaultPrefStore() override; |
| 45 |
| 46 PrefValueMap prefs_; |
| 47 |
| 48 base::ObserverList<PrefStore::Observer, true> observers_; |
| 49 |
| 50 DISALLOW_COPY_AND_ASSIGN(DefaultPrefStore); |
| 51 }; |
| 52 |
| 53 #endif // BASE_PREFS_DEFAULT_PREF_STORE_H_ |
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