| // Copyright 2017 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_FILE_SYSTEM_SAVED_FILES_SERVICE_INTERFACE_H_ |
| #define EXTENSIONS_BROWSER_API_FILE_SYSTEM_SAVED_FILES_SERVICE_INTERFACE_H_ |
| |
| #include <string> |
| |
| #include "base/files/file_path.h" |
| |
| namespace extensions { |
| |
| struct SavedFileEntry; |
| |
| // Provides an LRU of saved file entries that persist across app reloads. |
| class SavedFilesServiceInterface { |
| public: |
| virtual ~SavedFilesServiceInterface() {} |
| |
| // Registers a file entry with the saved files service, making it eligible to |
| // be put into the queue. File entries that are in the retained files queue at |
| // object construction are automatically registered. |
| virtual void RegisterFileEntry(const std::string& extension_id, |
| const std::string& id, |
| const base::FilePath& file_path, |
| bool is_directory) = 0; |
| |
| // If the file with |id| is not in the queue of files to be retained |
| // permanently, adds the file to the back of the queue, evicting the least |
| // recently used entry at the front of the queue if it is full. If it is |
| // already present, moves it to the back of the queue. The |id| must have been |
| // registered. |
| virtual void EnqueueFileEntry(const std::string& extension_id, |
| const std::string& id) = 0; |
| |
| // Returns whether the file entry with the given |id| has been registered. |
| virtual bool IsRegistered(const std::string& extension_id, |
| const std::string& id) = 0; |
| |
| // Gets a borrowed pointer to the file entry with the specified |id|. Returns |
| // nullptr if the file entry has not been registered. |
| virtual const SavedFileEntry* GetFileEntry(const std::string& extension_id, |
| const std::string& id) = 0; |
| }; |
| |
| } // namespace extensions |
| |
| #endif // EXTENSIONS_BROWSER_API_FILE_SYSTEM_SAVED_FILES_SERVICE_INTERFACE_H_ |