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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 #ifndef CHROME_BROWSER_PREFS_OVERLAY_USER_PREF_STORE_H_ | 5 #ifndef BASE_PREFS_OVERLAY_USER_PREF_STORE_H_ |
6 #define CHROME_BROWSER_PREFS_OVERLAY_USER_PREF_STORE_H_ | 6 #define BASE_PREFS_OVERLAY_USER_PREF_STORE_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
12 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
13 #include "base/observer_list.h" | 13 #include "base/observer_list.h" |
14 #include "chrome/browser/prefs/pref_value_map.h" | 14 #include "base/prefs/persistent_pref_store.h" |
15 #include "chrome/common/persistent_pref_store.h" | 15 #include "base/prefs/pref_value_map.h" |
16 | 16 |
17 // PersistentPrefStore that directs all write operations into an in-memory | 17 // PersistentPrefStore that directs all write operations into an in-memory |
18 // PrefValueMap. Read operations are first answered by the PrefValueMap. | 18 // PrefValueMap. Read operations are first answered by the PrefValueMap. |
19 // If the PrefValueMap does not contain a value for the requested key, | 19 // If the PrefValueMap does not contain a value for the requested key, |
20 // the look-up is passed on to an underlying PersistentPrefStore |underlay_|. | 20 // the look-up is passed on to an underlying PersistentPrefStore |underlay_|. |
21 class OverlayUserPrefStore : public PersistentPrefStore, | 21 class OverlayUserPrefStore : public PersistentPrefStore, |
22 public PrefStore::Observer { | 22 public PrefStore::Observer { |
23 public: | 23 public: |
24 explicit OverlayUserPrefStore(PersistentPrefStore* underlay); | 24 explicit OverlayUserPrefStore(PersistentPrefStore* underlay); |
25 | 25 |
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74 | 74 |
75 ObserverList<PrefStore::Observer, true> observers_; | 75 ObserverList<PrefStore::Observer, true> observers_; |
76 PrefValueMap overlay_; | 76 PrefValueMap overlay_; |
77 scoped_refptr<PersistentPrefStore> underlay_; | 77 scoped_refptr<PersistentPrefStore> underlay_; |
78 NamesMap overlay_to_underlay_names_map_; | 78 NamesMap overlay_to_underlay_names_map_; |
79 NamesMap underlay_to_overlay_names_map_; | 79 NamesMap underlay_to_overlay_names_map_; |
80 | 80 |
81 DISALLOW_COPY_AND_ASSIGN(OverlayUserPrefStore); | 81 DISALLOW_COPY_AND_ASSIGN(OverlayUserPrefStore); |
82 }; | 82 }; |
83 | 83 |
84 #endif // CHROME_BROWSER_PREFS_OVERLAY_USER_PREF_STORE_H_ | 84 #endif // BASE_PREFS_OVERLAY_USER_PREF_STORE_H_ |
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