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// Copyright (c) 2012 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 BASE_PREFS_PREF_SERVICE_BUILDER_H_
#define BASE_PREFS_PREF_SERVICE_BUILDER_H_
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "base/prefs/base_prefs_export.h"
#include "base/prefs/persistent_pref_store.h"
#include "base/prefs/pref_registry.h"
#include "base/prefs/pref_store.h"
class PrefService;
namespace base {
class FilePath;
class SequencedTaskRunner;
}
// A class that allows convenient building of PrefService.
class BASE_PREFS_EXPORT PrefServiceBuilder {
public:
PrefServiceBuilder();
virtual ~PrefServiceBuilder();
// Functions for setting the various parameters of the PrefService to build.
// These take ownership of the |store| parameter.
PrefServiceBuilder& WithManagedPrefs(PrefStore* store);
PrefServiceBuilder& WithSupervisedUserPrefs(PrefStore* store);
PrefServiceBuilder& WithExtensionPrefs(PrefStore* store);
PrefServiceBuilder& WithCommandLinePrefs(PrefStore* store);
PrefServiceBuilder& WithUserPrefs(PersistentPrefStore* store);
PrefServiceBuilder& WithRecommendedPrefs(PrefStore* store);
// Sets up error callback for the PrefService. A do-nothing default
// is provided if this is not called.
PrefServiceBuilder& WithReadErrorCallback(
const base::Callback<void(PersistentPrefStore::PrefReadError)>&
read_error_callback);
// Specifies to use an actual file-backed user pref store.
PrefServiceBuilder& WithUserFilePrefs(
const base::FilePath& prefs_file,
base::SequencedTaskRunner* task_runner);
PrefServiceBuilder& WithAsync(bool async);
// Creates a PrefService object initialized with the parameters from
// this builder.
virtual PrefService* Create(PrefRegistry* registry);
protected:
virtual void ResetDefaultState();
scoped_refptr<PrefStore> managed_prefs_;
scoped_refptr<PrefStore> supervised_user_prefs_;
scoped_refptr<PrefStore> extension_prefs_;
scoped_refptr<PrefStore> command_line_prefs_;
scoped_refptr<PersistentPrefStore> user_prefs_;
scoped_refptr<PrefStore> recommended_prefs_;
base::Callback<void(PersistentPrefStore::PrefReadError)> read_error_callback_;
// Defaults to false.
bool async_;
private:
DISALLOW_COPY_AND_ASSIGN(PrefServiceBuilder);
};
#endif // BASE_PREFS_PREF_SERVICE_BUILDER_H_
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