// 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 ASH_SYSTEM_CHROMEOS_SESSION_LOGOUT_BUTTON_OBSERVER_H_
#define ASH_SYSTEM_CHROMEOS_SESSION_LOGOUT_BUTTON_OBSERVER_H_

#include "ash/ash_export.h"
#include "base/time/time.h"

namespace ash {

class ASH_EXPORT LogoutButtonObserver {
 public:
  virtual ~LogoutButtonObserver() {}

  // Called when the value of the kShowLogoutButtonInTray pref changes, which
  // determines whether a logout button should be shown in the system tray
  // during a session.
  virtual void OnShowLogoutButtonInTrayChanged(bool show) = 0;

  // Called when the value of the kLogoutDialogDurationMs pref changes.
  // |duration| is the duration for which the logout confirmation dialog is
  // shown after the user has pressed the logout button.
  virtual void OnLogoutDialogDurationChanged(base::TimeDelta duration) = 0;
};

}  // namespace ash

#endif  // ASH_SYSTEM_CHROMEOS_SESSION_LOGOUT_BUTTON_OBSERVER_H_