1 // Copyright 2014 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 EXTENSIONS_BROWSER_API_STORAGE_SETTINGS_STORAGE_FACTORY_H_ 6 #define EXTENSIONS_BROWSER_API_STORAGE_SETTINGS_STORAGE_FACTORY_H_ 7 8 #include <string> 9 10 #include "base/files/file_path.h" 11 #include "base/memory/ref_counted.h" 12 13 class ValueStore; 14 15 namespace extensions { 16 17 // Factory for creating SettingStorage instances. 18 // 19 // Refcouted because it's just too messy to distribute these objects between 20 // ValueStoreCache instances any other way. 21 class SettingsStorageFactory 22 : public base::RefCountedThreadSafe<SettingsStorageFactory> { 23 public: 24 // Creates a new ValueStore area for an extension under |base_path|. 25 // Return NULL to indicate failure. Must be called on the FILE thread. 26 virtual ValueStore* Create(const base::FilePath& base_path, 27 const std::string& extension_id) = 0; 28 29 // Deletes the database for the extension, if one exists. 30 // Note: it is important to delete references to the database if any are 31 // held, because ValueStores will create themselves if there is no file. 32 virtual void DeleteDatabaseIfExists(const base::FilePath& base_path, 33 const std::string& extension_id) = 0; 34 35 protected: 36 friend class base::RefCountedThreadSafe<SettingsStorageFactory>; 37 virtual ~SettingsStorageFactory() {} 38 }; 39 40 } // namespace extensions 41 42 #endif // EXTENSIONS_BROWSER_API_STORAGE_SETTINGS_STORAGE_FACTORY_H_ 43
