chrome/browser/chromeos/file_system_provider/scoped_file_opener.h

   1 // Copyright 2015 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_SCOPED_FILE_OPENER_H_
   6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SCOPED_FILE_OPENER_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
  11
  12 namespace base {
  13 class FilePath;
  14 }  // namespace base
  15
  16 namespace chromeos {
  17 namespace file_system_provider {
  18
  19 // Opens files and guarantees that they will be closed when the object gets out
  20 // of scope. Use instead of manually calling OpenFile and CloseFile, as aborting
  21 // of the OpenFile operation is racey and the operation may or may not be
  22 // aborted.
  23 class ScopedFileOpener {
  24  public:
  25   ScopedFileOpener(
  26       ProvidedFileSystemInterface* file_system,
  27       const base::FilePath& file_path,
  28       OpenFileMode mode,
  29       const ProvidedFileSystemInterface::OpenFileCallback& callback);
  30   ~ScopedFileOpener();
  31
  32  private:
  33   class Runner;
  34   scoped_refptr<Runner> runner_;
  35 };
  36
  37 }  // namespace file_system_provider
  38 }  // namespace chromeos
  39
  40 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SCOPED_FILE_OPENER_H_