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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 storage {
     13 class AsyncFileUtil;
     14 class FileSystemContext;
     15 class FileStreamReader;
     16 class FileSystemURL;
     17 class FileStreamWriter;
     18 class WatcherManager;
     19 }  // namespace storage
     20 
     21 namespace drive {
     22 
     23 // Delegate implementation of the some methods in chromeos::FileSystemBackend
     24 // for Drive file system.
     25 class FileSystemBackendDelegate : public chromeos::FileSystemBackendDelegate {
     26  public:
     27   FileSystemBackendDelegate();
     28   virtual ~FileSystemBackendDelegate();
     29 
     30   // FileSystemBackend::Delegate overrides.
     31   virtual storage::AsyncFileUtil* GetAsyncFileUtil(
     32       storage::FileSystemType type) OVERRIDE;
     33   virtual scoped_ptr<storage::FileStreamReader> CreateFileStreamReader(
     34       const storage::FileSystemURL& url,
     35       int64 offset,
     36       int64 max_bytes_to_read,
     37       const base::Time& expected_modification_time,
     38       storage::FileSystemContext* context) OVERRIDE;
     39   virtual scoped_ptr<storage::FileStreamWriter> CreateFileStreamWriter(
     40       const storage::FileSystemURL& url,
     41       int64 offset,
     42       storage::FileSystemContext* context) OVERRIDE;
     43   virtual storage::WatcherManager* GetWatcherManager(
     44       const storage::FileSystemURL& url) OVERRIDE;
     45   virtual void GetRedirectURLForContents(
     46       const storage::FileSystemURL& url,
     47       const storage::URLCallback& callback) OVERRIDE;
     48 
     49  private:
     50   scoped_ptr<storage::AsyncFileUtil> async_file_util_;
     51 
     52   DISALLOW_COPY_AND_ASSIGN(FileSystemBackendDelegate);
     53 };
     54 
     55 }  // namespace drive
     56 
     57 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILEAPI_FILE_SYSTEM_BACKEND_DELEGATE_H_
     58