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// Copyright 2013 The Chromium Authors
// 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/memory/raw_ptr.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:
UserPrefs(const UserPrefs&) = delete;
UserPrefs& operator=(const UserPrefs&) = delete;
~UserPrefs() override;
// Returns true if there is a PrefService attached to the given context.
static bool IsInitialized(base::SupportsUserData* context);
// Retrieves the PrefService for a given context.
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);
// Non-owning; owned by embedder.
raw_ptr<PrefService, AcrossTasksDanglingUntriaged> prefs_;
};
} // namespace user_prefs
#endif // COMPONENTS_USER_PREFS_USER_PREFS_H_
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