ash/system/session/logout_button_observer.h

   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_SESSION_LOGOUT_BUTTON_OBSERVER_H_
   6 #define ASH_SYSTEM_SESSION_LOGOUT_BUTTON_OBSERVER_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "base/time/time.h"
  10
  11 namespace ash {
  12
  13 class 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_SESSION_LOGOUT_BUTTON_OBSERVER_H_