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Side by Side Diff: components/user_prefs/user_prefs.h

Issue 2842833003: Update SupportsUserData uses with unique_ptr. (Closed)
Patch Set: rebase Created 3 years, 7 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 1 // Copyright 2013 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 COMPONENTS_USER_PREFS_USER_PREFS_H_ 5 #ifndef COMPONENTS_USER_PREFS_USER_PREFS_H_
6 #define COMPONENTS_USER_PREFS_USER_PREFS_H_ 6 #define COMPONENTS_USER_PREFS_USER_PREFS_H_
7 7
8 #include "base/macros.h" 8 #include "base/macros.h"
9 #include "base/supports_user_data.h" 9 #include "base/supports_user_data.h"
10 #include "components/user_prefs/user_prefs_export.h" 10 #include "components/user_prefs/user_prefs_export.h"
11 11
12 class PrefService; 12 class PrefService;
13 13
14 namespace user_prefs { 14 namespace user_prefs {
15 15
16 // Components may use preferences associated with a given user. These hang off 16 // Components may use preferences associated with a given user. These hang off
17 // of base::SupportsUserData and can be retrieved using UserPrefs::Get(). 17 // of base::SupportsUserData and can be retrieved using UserPrefs::Get().
18 // 18 //
19 // It is up to the embedder to create and own the PrefService and attach it to 19 // It is up to the embedder to create and own the PrefService and attach it to
20 // base::SupportsUserData using the UserPrefs::Set() function. 20 // base::SupportsUserData using the UserPrefs::Set() function.
21 class USER_PREFS_EXPORT UserPrefs : public base::SupportsUserData::Data { 21 class USER_PREFS_EXPORT UserPrefs : public base::SupportsUserData::Data {
22 public: 22 public:
23 ~UserPrefs() override;
24
23 // Retrieves the PrefService for a given context, or null if none is attached. 25 // Retrieves the PrefService for a given context, or null if none is attached.
24 static PrefService* Get(base::SupportsUserData* context); 26 static PrefService* Get(base::SupportsUserData* context);
25 27
26 // Hangs the specified |prefs| off of |context|. Should be called 28 // Hangs the specified |prefs| off of |context|. Should be called
27 // only once per context. 29 // only once per context.
28 static void Set(base::SupportsUserData* context, PrefService* prefs); 30 static void Set(base::SupportsUserData* context, PrefService* prefs);
29 31
30 private: 32 private:
31 explicit UserPrefs(PrefService* prefs); 33 explicit UserPrefs(PrefService* prefs);
32 ~UserPrefs() override;
33 34
34 // Non-owning; owned by embedder. 35 // Non-owning; owned by embedder.
35 PrefService* prefs_; 36 PrefService* prefs_;
36 37
37 DISALLOW_COPY_AND_ASSIGN(UserPrefs); 38 DISALLOW_COPY_AND_ASSIGN(UserPrefs);
38 }; 39 };
39 40
40 } // namespace user_prefs 41 } // namespace user_prefs
41 42
42 #endif // COMPONENTS_USER_PREFS_USER_PREFS_H_ 43 #endif // COMPONENTS_USER_PREFS_USER_PREFS_H_
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