chrome/browser/chrome_select_file_dialog_factory_win.h

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_CHROME_SELECT_FILE_DIALOG_FACTORY_WIN_H_
#define CHROME_BROWSER_CHROME_SELECT_FILE_DIALOG_FACTORY_WIN_H_

#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "ui/shell_dialogs/select_file_dialog_factory.h"

namespace base {
class SequencedTaskRunner;
}  // namespace base

// Implements a Select File dialog that delegates to a Metro file picker on
// Metro and to a utility process otherwise. The utility process is used in
// order to isolate the Chrome browser process from potential instability
// caused by Shell extension modules loaded by GetOpenFileName.
class ChromeSelectFileDialogFactory : public ui::SelectFileDialogFactory {
 public:
  // Uses |blocking_task_runner| to perform IPC with the utility process.
  explicit ChromeSelectFileDialogFactory(
      const scoped_refptr<base::SequencedTaskRunner>& blocking_task_runner);
  ~ChromeSelectFileDialogFactory() override;

  // ui::SelectFileDialogFactory implementation
  ui::SelectFileDialog* Create(ui::SelectFileDialog::Listener* listener,
                               ui::SelectFilePolicy* policy) override;

 private:
  scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;

  DISALLOW_COPY_AND_ASSIGN(ChromeSelectFileDialogFactory);
};

#endif  // CHROME_BROWSER_CHROME_SELECT_FILE_DIALOG_FACTORY_WIN_H_