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 CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_ 6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_ 7 8 #include <stdint.h> 9 10 #include <memory> 11 12 #include "base/files/file_util.h" 13 #include "base/macros.h" 14 #include "chrome/browser/chromeos/fileapi/file_system_backend_delegate.h" 15 16 namespace storage { 17 class AsyncFileUtil; 18 class FileSystemContext; 19 class FileStreamReader; 20 class FileSystemURL; 21 class FileStreamWriter; 22 class WatcherManager; 23 } // namespace storage 24 25 namespace chromeos { 26 namespace file_system_provider { 27 28 // Delegate implementation of the some methods in chromeos::FileSystemBackend 29 // for provided file systems. 30 class BackendDelegate : public chromeos::FileSystemBackendDelegate { 31 public: 32 BackendDelegate(); 33 ~BackendDelegate() override; 34 35 // FileSystemBackend::Delegate overrides. 36 storage::AsyncFileUtil* GetAsyncFileUtil( 37 storage::FileSystemType type) override; 38 std::unique_ptr<storage::FileStreamReader> CreateFileStreamReader( 39 const storage::FileSystemURL& url, 40 int64_t offset, 41 int64_t max_bytes_to_read, 42 const base::Time& expected_modification_time, 43 storage::FileSystemContext* context) override; 44 std::unique_ptr<storage::FileStreamWriter> CreateFileStreamWriter( 45 const storage::FileSystemURL& url, 46 int64_t offset, 47 storage::FileSystemContext* context) override; 48 storage::WatcherManager* GetWatcherManager( 49 storage::FileSystemType type) override; 50 void GetRedirectURLForContents(const storage::FileSystemURL& url, 51 storage::URLCallback callback) override; 52 53 private: 54 std::unique_ptr<storage::AsyncFileUtil> async_file_util_; 55 std::unique_ptr<storage::WatcherManager> watcher_manager_; 56 57 DISALLOW_COPY_AND_ASSIGN(BackendDelegate); 58 }; 59 60 } // namespace file_system_provider 61 } // namespace chromeos 62 63 #endif // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_ 64