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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_USER_PREFS_USER_PREFS_H_
#define COMPONENTS_USER_PREFS_USER_PREFS_H_
#include "base/basictypes.h"
#include "base/supports_user_data.h"
#include "components/user_prefs/user_prefs_export.h"
class PrefService;
namespace user_prefs {
// Components may use preferences associated with a given user. These hang off
// of base::SupportsUserData and can be retrieved using UserPrefs::Get().
//
// It is up to the embedder to create and own the PrefService and attach it to
// base::SupportsUserData using the UserPrefs::Set() function.
class USER_PREFS_EXPORT UserPrefs : public base::SupportsUserData::Data {
public:
// Retrieves the PrefService for a given context, or null if none is attached.
static PrefService* Get(base::SupportsUserData* context);
// Hangs the specified |prefs| off of |context|. Should be called
// only once per context.
static void Set(base::SupportsUserData* context, PrefService* prefs);
private:
explicit UserPrefs(PrefService* prefs);
~UserPrefs() override;
// Non-owning; owned by embedder.
PrefService* prefs_;
DISALLOW_COPY_AND_ASSIGN(UserPrefs);
};
} // namespace user_prefs
#endif // COMPONENTS_USER_PREFS_USER_PREFS_H_
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