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      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_DRIVE_FILEAPI_FILE_SYSTEM_BACKEND_DELEGATE_H_
      6 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILEAPI_FILE_SYSTEM_BACKEND_DELEGATE_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "chrome/browser/chromeos/fileapi/file_system_backend_delegate.h"
     11 
     12 namespace fileapi {
     13 class AsyncFileUtil;
     14 }  // namespace fileapi
     15 
     16 namespace drive {
     17 
     18 // Delegate implementation of the some methods in chromeos::FileSystemBackend
     19 // for Drive file system.
     20 class FileSystemBackendDelegate : public chromeos::FileSystemBackendDelegate {
     21  public:
     22   FileSystemBackendDelegate();
     23   virtual ~FileSystemBackendDelegate();
     24 
     25   // FileSystemBackend::Delegate overrides.
     26   virtual fileapi::AsyncFileUtil* GetAsyncFileUtil(
     27       fileapi::FileSystemType type) OVERRIDE;
     28   virtual scoped_ptr<webkit_blob::FileStreamReader> CreateFileStreamReader(
     29       const fileapi::FileSystemURL& url,
     30       int64 offset,
     31       const base::Time& expected_modification_time,
     32       fileapi::FileSystemContext* context) OVERRIDE;
     33   virtual scoped_ptr<fileapi::FileStreamWriter> CreateFileStreamWriter(
     34       const fileapi::FileSystemURL& url,
     35       int64 offset,
     36       fileapi::FileSystemContext* context) OVERRIDE;
     37 
     38  private:
     39   scoped_ptr<fileapi::AsyncFileUtil> async_file_util_;
     40 
     41   DISALLOW_COPY_AND_ASSIGN(FileSystemBackendDelegate);
     42 };
     43 
     44 }  // namespace drive
     45 
     46 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILEAPI_FILE_SYSTEM_BACKEND_DELEGATE_H_
     47