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
3// found in the LICENSE file.
4
5#ifndef COMPONENTS_USER_PREFS_USER_PREFS_H_
6#define COMPONENTS_USER_PREFS_USER_PREFS_H_
7
8#include "base/basictypes.h"
9#include "base/supports_user_data.h"
10#include "components/user_prefs/user_prefs_export.h"
11
12class PrefService;
13
14namespace content {
15class BrowserContext;
16}
17
18namespace user_prefs {
19
20// Components may use preferences associated with a given user. These
21// hang off of content::BrowserContext and can be retrieved using
22// UserPrefs::Get().
23//
24// It is up to the embedder to create and own the PrefService and
25// attach it to BrowserContext using the UserPrefs::Set() function.
26class USER_PREFS_EXPORT UserPrefs : public base::SupportsUserData::Data {
27 public:
28  // Retrieves the PrefService for a given BrowserContext, or NULL if
29  // none is attached.
30  static PrefService* Get(content::BrowserContext* context);
31
32  // Hangs the specified |prefs| off of |context|. Should be called
33  // only once per BrowserContext.
34  static void Set(content::BrowserContext* context, PrefService* prefs);
35
36 private:
37  explicit UserPrefs(PrefService* prefs);
38  virtual ~UserPrefs();
39
40  // Non-owning; owned by embedder.
41  PrefService* prefs_;
42
43  DISALLOW_COPY_AND_ASSIGN(UserPrefs);
44};
45
46}  // namespace user_prefs
47
48#endif  // COMPONENTS_USER_PREFS_USER_PREFS_H_
49