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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 CHROME_BROWSER_PREFS_PREF_REGISTRY_H_ | |
6 #define CHROME_BROWSER_PREFS_PREF_REGISTRY_H_ | |
7 | |
8 #include "base/memory/ref_counted.h" | |
9 #include "base/memory/ref_counted.h" | |
Mattias Nissler (ping if slow)
2013/01/25 14:57:11
once is enough ;)
Jói
2013/01/29 16:10:02
Done.
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10 #include "base/prefs/default_pref_store.h" | |
11 | |
12 namespace base { | |
13 class Value; | |
14 } | |
15 | |
16 class PrefService; | |
17 | |
18 // Preferences need to be registered with a type and default value | |
19 // before they are used. | |
20 // | |
21 // The way you use a PrefRegistry is that you register all required | |
22 // preferences on it, then pass it as a construction parameter to | |
23 // PrefService. | |
24 // | |
25 // Currently, registrations after constructing the PrefService will | |
26 // also work, but this is being deprecated. | |
27 class PrefRegistry { | |
28 public: | |
29 PrefRegistry(); | |
30 | |
31 // Only valid after this object has been used to construct a PrefService. | |
32 virtual void DeprecatedUnregisterPreference(const char* path); | |
33 | |
34 protected: | |
35 // Interface used by PrefService to retrieve registered default values. This | |
36 // is a transfer of ownership; this object loses its reference to the | |
37 // default values when this method is called. | |
38 void RetrieveDefaults(scoped_refptr<DefaultPrefStore>* result); | |
Mattias Nissler (ping if slow)
2013/01/25 14:57:11
I'd make this public with the eventual goal of rem
Jói
2013/01/29 16:10:02
Done.
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39 | |
40 // Used by subclasses to register a default value for a preference. | |
41 void RegisterPreference(const char* path, base::Value* default_value); | |
42 | |
43 private: | |
44 // This friend and member are needed for registrations after | |
45 // construction time, and for DeprecatedUnregisterPreference. | |
46 // PrefService sets the pref_service_ member once it receives this | |
47 // object at construction time. | |
48 friend class PrefService; | |
49 PrefService* pref_service_; | |
50 | |
51 // Friend so that PrefRegistry can be used in place of a PrefStore | |
52 // for its default_store construction parameter. | |
53 friend class PrefValueStore; | |
Mattias Nissler (ping if slow)
2013/01/25 14:57:11
I don't understand this comment, why can a PrefReg
Jói
2013/01/29 16:10:02
This bit of ugliness is gone.
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54 | |
55 // TODO(joi): Temporary until we have a PrefRegistrySyncable. | |
56 friend class PrefServiceSyncable; | |
57 | |
58 scoped_refptr<DefaultPrefStore> default_prefs_; | |
59 | |
60 DISALLOW_COPY_AND_ASSIGN(PrefRegistry); | |
61 }; | |
62 | |
63 #endif // CHROME_BROWSER_PREFS_PREF_REGISTRY_H_ | |
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