src/chrome/browser/chromeos/fileapi/mtp_file_system_backend_delegate.cc

   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 #include "chrome/browser/chromeos/fileapi/mtp_file_system_backend_delegate.h"
   6 #include "chrome/browser/media_galleries/fileapi/device_media_async_file_util.h"
   7 #include "storage/browser/blob/file_stream_reader.h"
   8 #include "storage/browser/fileapi/file_stream_writer.h"
   9 #include "storage/browser/fileapi/file_system_url.h"
  10
  11 namespace chromeos {
  12
  13 MTPFileSystemBackendDelegate::MTPFileSystemBackendDelegate(
  14     const base::FilePath& storage_partition_path)
  15     : device_media_async_file_util_(
  16           DeviceMediaAsyncFileUtil::Create(storage_partition_path,
  17                                            NO_MEDIA_FILE_VALIDATION)) {
  18 }
  19
  20 MTPFileSystemBackendDelegate::~MTPFileSystemBackendDelegate() {
  21 }
  22
  23 storage::AsyncFileUtil* MTPFileSystemBackendDelegate::GetAsyncFileUtil(
  24     storage::FileSystemType type) {
  25   DCHECK_EQ(storage::kFileSystemTypeDeviceMediaAsFileStorage, type);
  26
  27   return device_media_async_file_util_.get();
  28 }
  29
  30 scoped_ptr<storage::FileStreamReader>
  31 MTPFileSystemBackendDelegate::CreateFileStreamReader(
  32     const storage::FileSystemURL& url,
  33     int64 offset,
  34     int64 max_bytes_to_read,
  35     const base::Time& expected_modification_time,
  36     storage::FileSystemContext* context) {
  37   DCHECK_EQ(storage::kFileSystemTypeDeviceMediaAsFileStorage, url.type());
  38
  39   return device_media_async_file_util_->GetFileStreamReader(
  40       url, offset, expected_modification_time, context);
  41 }
  42
  43 scoped_ptr<storage::FileStreamWriter>
  44 MTPFileSystemBackendDelegate::CreateFileStreamWriter(
  45     const storage::FileSystemURL& url,
  46     int64 offset,
  47     storage::FileSystemContext* context) {
  48   DCHECK_EQ(storage::kFileSystemTypeDeviceMediaAsFileStorage, url.type());
  49
  50   // TODO(kinaba): support writing.
  51   return scoped_ptr<storage::FileStreamWriter>();
  52 }
  53
  54 storage::WatcherManager* MTPFileSystemBackendDelegate::GetWatcherManager(
  55     storage::FileSystemType type) {
  56   NOTIMPLEMENTED();
  57   return NULL;
  58 }
  59
  60 void MTPFileSystemBackendDelegate::GetRedirectURLForContents(
  61     const storage::FileSystemURL& url,
  62     const storage::URLCallback& callback) {
  63   DCHECK_EQ(storage::kFileSystemTypeDeviceMediaAsFileStorage, url.type());
  64
  65   callback.Run(GURL());
  66 }
  67
  68 }  // namespace chromeos