// Copyright 2014 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 EXTENSIONS_BROWSER_API_STORAGE_SETTINGS_STORAGE_FACTORY_H_
#define EXTENSIONS_BROWSER_API_STORAGE_SETTINGS_STORAGE_FACTORY_H_
#include <string>
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
class ValueStore;
namespace extensions {
// Factory for creating SettingStorage instances.
//
// Refcouted because it's just too messy to distribute these objects between
// ValueStoreCache instances any other way.
class SettingsStorageFactory
: public base::RefCountedThreadSafe<SettingsStorageFactory> {
public:
// Creates a new ValueStore area for an extension under |base_path|.
// Return NULL to indicate failure. Must be called on the FILE thread.
virtual ValueStore* Create(const base::FilePath& base_path,
const std::string& extension_id) = 0;
// Deletes the database for the extension, if one exists.
// Note: it is important to delete references to the database if any are
// held, because ValueStores will create themselves if there is no file.
virtual void DeleteDatabaseIfExists(const base::FilePath& base_path,
const std::string& extension_id) = 0;
protected:
friend class base::RefCountedThreadSafe<SettingsStorageFactory>;
virtual ~SettingsStorageFactory() {}
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_API_STORAGE_SETTINGS_STORAGE_FACTORY_H_