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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_FILEAPI_MTP_FILE_SYSTEM_BACKEND_DELEGATE_H_
      6 #define CHROME_BROWSER_CHROMEOS_FILEAPI_MTP_FILE_SYSTEM_BACKEND_DELEGATE_H_
      7 
      8 #include "base/memory/scoped_ptr.h"
      9 #include "chrome/browser/chromeos/fileapi/file_system_backend_delegate.h"
     10 
     11 namespace base {
     12 class FilePath;
     13 }  // namespace base
     14 
     15 namespace storage {
     16 class AsyncFileUtil;
     17 class FileSystemContext;
     18 class FileStreamReader;
     19 class FileSystemURL;
     20 class FileStreamWriter;
     21 class WatcherManager;
     22 }  // namespace storage
     23 
     24 class DeviceMediaAsyncFileUtil;
     25 
     26 namespace chromeos {
     27 
     28 // This is delegate interface to inject the MTP device file system in Chrome OS
     29 // file API backend.
     30 class MTPFileSystemBackendDelegate : public FileSystemBackendDelegate {
     31  public:
     32   explicit MTPFileSystemBackendDelegate(
     33       const base::FilePath& storage_partition_path);
     34   virtual ~MTPFileSystemBackendDelegate();
     35 
     36   // FileSystemBackendDelegate overrides.
     37   virtual storage::AsyncFileUtil* GetAsyncFileUtil(
     38       storage::FileSystemType type) OVERRIDE;
     39   virtual scoped_ptr<storage::FileStreamReader> CreateFileStreamReader(
     40       const storage::FileSystemURL& url,
     41       int64 offset,
     42       int64 max_bytes_to_read,
     43       const base::Time& expected_modification_time,
     44       storage::FileSystemContext* context) OVERRIDE;
     45   virtual scoped_ptr<storage::FileStreamWriter> CreateFileStreamWriter(
     46       const storage::FileSystemURL& url,
     47       int64 offset,
     48       storage::FileSystemContext* context) OVERRIDE;
     49   virtual storage::WatcherManager* GetWatcherManager(
     50       const storage::FileSystemURL& url) OVERRIDE;
     51   virtual void GetRedirectURLForContents(
     52       const storage::FileSystemURL& url,
     53       const storage::URLCallback& callback) OVERRIDE;
     54 
     55  private:
     56   scoped_ptr<DeviceMediaAsyncFileUtil> device_media_async_file_util_;
     57 
     58   DISALLOW_COPY_AND_ASSIGN(MTPFileSystemBackendDelegate);
     59 };
     60 
     61 }  // namespace chromeos
     62 
     63 #endif  // CHROME_BROWSER_CHROMEOS_FILEAPI_MTP_FILE_SYSTEM_BACKEND_DELEGATE_H_
     64