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 ASH_SYSTEM_CHROMEOS_SESSION_LOGOUT_BUTTON_OBSERVER_H_ 6#define ASH_SYSTEM_CHROMEOS_SESSION_LOGOUT_BUTTON_OBSERVER_H_ 7 8#include "ash/ash_export.h" 9#include "base/time/time.h" 10 11namespace ash { 12 13class ASH_EXPORT LogoutButtonObserver { 14 public: 15 virtual ~LogoutButtonObserver() {} 16 17 // Called when the value of the kShowLogoutButtonInTray pref changes, which 18 // determines whether a logout button should be shown in the system tray 19 // during a session. 20 virtual void OnShowLogoutButtonInTrayChanged(bool show) = 0; 21 22 // Called when the value of the kLogoutDialogDurationMs pref changes. 23 // |duration| is the duration for which the logout confirmation dialog is 24 // shown after the user has pressed the logout button. 25 virtual void OnLogoutDialogDurationChanged(base::TimeDelta duration) = 0; 26}; 27 28} // namespace ash 29 30#endif // ASH_SYSTEM_CHROMEOS_SESSION_LOGOUT_BUTTON_OBSERVER_H_ 31