1 // Copyright (c) 2012 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_LOGOUT_BUTTON_LOGOUT_BUTTON_OBSERVER_H_ 6 #define ASH_SYSTEM_LOGOUT_BUTTON_LOGOUT_BUTTON_OBSERVER_H_ 7 8 namespace ash { 9 10 // Observer for the value of the kShowLogoutButtonInTray pref that determines 11 // whether a logout button should be shown in the system tray during a session. 12 class LogoutButtonObserver { 13 public: 14 virtual ~LogoutButtonObserver() {} 15 16 // Called when the value of the kShowLogoutButtonInTray pref changes. 17 virtual void OnShowLogoutButtonInTrayChanged(bool show) = 0; 18 }; 19 20 } // namespace ash 21 22 #endif // ASH_SYSTEM_LOGOUT_BUTTON_LOGOUT_BUTTON_OBSERVER_H_ 23
