src/chrome/browser/chromeos/file_system_provider/fileapi/backend_delegate.h

   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_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_
   6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/files/file_util.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "chrome/browser/chromeos/fileapi/file_system_backend_delegate.h"
  12
  13 namespace storage {
  14 class AsyncFileUtil;
  15 class FileSystemContext;
  16 class FileStreamReader;
  17 class FileSystemURL;
  18 class FileStreamWriter;
  19 class WatcherManager;
  20 }  // namespace storage
  21
  22 namespace chromeos {
  23 namespace file_system_provider {
  24
  25 // Delegate implementation of the some methods in chromeos::FileSystemBackend
  26 // for provided file systems.
  27 class BackendDelegate : public chromeos::FileSystemBackendDelegate {
  28  public:
  29   BackendDelegate();
  30   virtual ~BackendDelegate();
  31
  32   // FileSystemBackend::Delegate overrides.
  33   virtual storage::AsyncFileUtil* GetAsyncFileUtil(
  34       storage::FileSystemType type) override;
  35   virtual scoped_ptr<storage::FileStreamReader> CreateFileStreamReader(
  36       const storage::FileSystemURL& url,
  37       int64 offset,
  38       int64 max_bytes_to_read,
  39       const base::Time& expected_modification_time,
  40       storage::FileSystemContext* context) override;
  41   virtual scoped_ptr<storage::FileStreamWriter> CreateFileStreamWriter(
  42       const storage::FileSystemURL& url,
  43       int64 offset,
  44       storage::FileSystemContext* context) override;
  45   virtual storage::WatcherManager* GetWatcherManager(
  46       storage::FileSystemType type) override;
  47   virtual void GetRedirectURLForContents(
  48       const storage::FileSystemURL& url,
  49       const storage::URLCallback& callback) override;
  50
  51  private:
  52   scoped_ptr<storage::AsyncFileUtil> async_file_util_;
  53   scoped_ptr<storage::WatcherManager> watcher_manager_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(BackendDelegate);
  56 };
  57
  58 }  // namespace file_system_provider
  59 }  // namespace chromeos
  60
  61 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_