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 #include "chrome/browser/chromeos/power/brightness_observer.h" 6 7 #include "ash/shell.h" 8 #include "ash/wm/power_button_controller.h" 9 #include "chrome/browser/chromeos/login/user_manager.h" 10 #include "chrome/browser/extensions/api/system_private/system_private_api.h" 11 #include "chrome/browser/lifetime/application_lifetime.h" 12 #include "chromeos/dbus/dbus_thread_manager.h" 13 14 namespace chromeos { 15 16 BrightnessObserver::BrightnessObserver() { 17 DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(this); 18 } 19 20 BrightnessObserver::~BrightnessObserver() { 21 DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver(this); 22 } 23 24 void BrightnessObserver::BrightnessChanged(int level, bool user_initiated) { 25 extensions::DispatchBrightnessChangedEvent(level, user_initiated); 26 ash::Shell::GetInstance()->power_button_controller()-> 27 OnScreenBrightnessChanged(static_cast<double>(level)); 28 29 // When the user is idle, the power manager dims the screen, turns off the 30 // screen and eventually locks the screen (if screen lock on idle and suspend 31 // is enabled). For Public Accounts, the session should be terminated instead 32 // as soon as the screen turns off. 33 // This implementation will be superseded after a revamp of the power manager 34 // is complete, see crbug.com/161267. 35 if (UserManager::Get()->IsLoggedInAsPublicAccount() && 36 !level && !user_initiated) { 37 chrome::AttemptUserExit(); 38 } 39 } 40 41 } // namespace chromeos 42
