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 <stdint.h>
9 
10 #include <memory>
11 
12 #include "base/files/file_util.h"
13 #include "base/macros.h"
14 #include "chrome/browser/chromeos/fileapi/file_system_backend_delegate.h"
15 
16 namespace storage {
17 class AsyncFileUtil;
18 class FileSystemContext;
19 class FileStreamReader;
20 class FileSystemURL;
21 class FileStreamWriter;
22 class WatcherManager;
23 }  // namespace storage
24 
25 namespace chromeos {
26 namespace file_system_provider {
27 
28 // Delegate implementation of the some methods in chromeos::FileSystemBackend
29 // for provided file systems.
30 class BackendDelegate : public chromeos::FileSystemBackendDelegate {
31  public:
32   BackendDelegate();
33   ~BackendDelegate() override;
34 
35   // FileSystemBackend::Delegate overrides.
36   storage::AsyncFileUtil* GetAsyncFileUtil(
37       storage::FileSystemType type) override;
38   std::unique_ptr<storage::FileStreamReader> CreateFileStreamReader(
39       const storage::FileSystemURL& url,
40       int64_t offset,
41       int64_t max_bytes_to_read,
42       const base::Time& expected_modification_time,
43       storage::FileSystemContext* context) override;
44   std::unique_ptr<storage::FileStreamWriter> CreateFileStreamWriter(
45       const storage::FileSystemURL& url,
46       int64_t offset,
47       storage::FileSystemContext* context) override;
48   storage::WatcherManager* GetWatcherManager(
49       storage::FileSystemType type) override;
50   void GetRedirectURLForContents(const storage::FileSystemURL& url,
51                                  storage::URLCallback callback) override;
52 
53  private:
54   std::unique_ptr<storage::AsyncFileUtil> async_file_util_;
55   std::unique_ptr<storage::WatcherManager> watcher_manager_;
56 
57   DISALLOW_COPY_AND_ASSIGN(BackendDelegate);
58 };
59 
60 }  // namespace file_system_provider
61 }  // namespace chromeos
62 
63 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_
64