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_SYNC_FILE_SYSTEM_DRIVE_BACKEND_REMOTE_CHANGE_PROCESSOR_ON_WORKER_H_ 6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_REMOTE_CHANGE_PROCESSOR_ON_WORKER_H_ 7 8 #include "base/memory/ref_counted.h" 9 #include "base/memory/weak_ptr.h" 10 #include "base/sequence_checker.h" 11 #include "chrome/browser/sync_file_system/remote_change_processor.h" 12 13 namespace base { 14 class SingleThreadTaskRunner; 15 class SequencedTaskRunner; 16 } 17 18 namespace sync_file_system { 19 namespace drive_backend { 20 21 class RemoteChangeProcessorWrapper; 22 23 // This class wraps a part of RemoteChangeProcessor class to post actual 24 // tasks to RemoteChangeProcessorWrapper which lives in another thread. 25 // Each method wraps corresponding name method of RemoteChangeProcessor. 26 // See comments in remote_change_processor.h for details. 27 class RemoteChangeProcessorOnWorker : public RemoteChangeProcessor { 28 public: 29 RemoteChangeProcessorOnWorker( 30 const base::WeakPtr<RemoteChangeProcessorWrapper>& wrapper, 31 base::SingleThreadTaskRunner* ui_task_runner, 32 base::SequencedTaskRunner* worker_task_runner); 33 virtual ~RemoteChangeProcessorOnWorker(); 34 35 virtual void PrepareForProcessRemoteChange( 36 const fileapi::FileSystemURL& url, 37 const PrepareChangeCallback& callback) OVERRIDE; 38 virtual void ApplyRemoteChange( 39 const FileChange& change, 40 const base::FilePath& local_path, 41 const fileapi::FileSystemURL& url, 42 const SyncStatusCallback& callback) OVERRIDE; 43 virtual void FinalizeRemoteSync( 44 const fileapi::FileSystemURL& url, 45 bool clear_local_changes, 46 const base::Closure& completion_callback) OVERRIDE; 47 virtual void RecordFakeLocalChange( 48 const fileapi::FileSystemURL& url, 49 const FileChange& change, 50 const SyncStatusCallback& callback) OVERRIDE; 51 52 void DetachFromSequence(); 53 54 private: 55 base::WeakPtr<RemoteChangeProcessorWrapper> wrapper_; 56 scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_; 57 scoped_refptr<base::SequencedTaskRunner> worker_task_runner_; 58 59 base::SequenceChecker sequence_checker_; 60 61 DISALLOW_COPY_AND_ASSIGN(RemoteChangeProcessorOnWorker); 62 }; 63 64 } // namespace drive_backend 65 } // namespace sync_file_system 66 67 #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_REMOTE_CHANGE_PROCESSOR_ON_WORKER_H_ 68