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/power_button_observer.h"
6
7#include "ash/shell.h"
8#include "ash/system/tray/system_tray_delegate.h"
9#include "ash/system/user/login_status.h"
10#include "ash/wm/power_button_controller.h"
11#include "base/logging.h"
12#include "chrome/browser/chrome_notification_types.h"
13#include "chrome/browser/chromeos/login/lock/screen_locker.h"
14#include "chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h"
15#include "chromeos/dbus/dbus_thread_manager.h"
16#include "content/public/browser/notification_service.h"
17
18namespace ash {
19class LockStateControllerDelegate;
20}
21
22namespace chromeos {
23
24namespace {
25
26ash::user::LoginStatus GetCurrentLoginStatus() {
27  if (!ash::Shell::GetInstance()->system_tray_delegate())
28    return ash::user::LOGGED_IN_NONE;
29  return ash::Shell::GetInstance()->system_tray_delegate()->
30      GetUserLoginStatus();
31}
32
33}  // namespace
34
35PowerButtonObserver::PowerButtonObserver() {
36  ash::Shell::GetInstance()->lock_state_controller()->
37      SetDelegate(scoped_ptr<ash::LockStateControllerDelegate>(
38          new SessionStateControllerDelegateChromeos));
39
40  registrar_.Add(
41      this,
42      chrome::NOTIFICATION_LOGIN_USER_CHANGED,
43      content::NotificationService::AllSources());
44  registrar_.Add(
45      this,
46      chrome::NOTIFICATION_APP_TERMINATING,
47      content::NotificationService::AllSources());
48  registrar_.Add(
49      this,
50      chrome::NOTIFICATION_SCREEN_LOCK_STATE_CHANGED,
51      content::NotificationService::AllSources());
52
53  DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(this);
54  DBusThreadManager::Get()->GetSessionManagerClient()->AddObserver(this);
55
56  // Tell the controller about the initial state.
57  ash::Shell::GetInstance()->OnLoginStateChanged(GetCurrentLoginStatus());
58
59  const ScreenLocker* locker = ScreenLocker::default_screen_locker();
60  bool locked = locker && locker->locked();
61  ash::Shell::GetInstance()->OnLockStateChanged(locked);
62}
63
64PowerButtonObserver::~PowerButtonObserver() {
65  DBusThreadManager::Get()->GetSessionManagerClient()->RemoveObserver(this);
66  DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver(this);
67}
68
69void PowerButtonObserver::Observe(int type,
70                                  const content::NotificationSource& source,
71                                  const content::NotificationDetails& details) {
72  switch (type) {
73    case chrome::NOTIFICATION_LOGIN_USER_CHANGED: {
74      ash::Shell::GetInstance()->OnLoginStateChanged(GetCurrentLoginStatus());
75      break;
76    }
77    case chrome::NOTIFICATION_APP_TERMINATING:
78      ash::Shell::GetInstance()->OnAppTerminating();
79      break;
80    case chrome::NOTIFICATION_SCREEN_LOCK_STATE_CHANGED: {
81      bool locked = *content::Details<bool>(details).ptr();
82      ash::Shell::GetInstance()->OnLockStateChanged(locked);
83      break;
84    }
85    default:
86      NOTREACHED() << "Unexpected notification " << type;
87  }
88}
89
90void PowerButtonObserver::PowerButtonEventReceived(
91    bool down, const base::TimeTicks& timestamp) {
92  ash::Shell::GetInstance()->power_button_controller()->
93      OnPowerButtonEvent(down, timestamp);
94}
95
96}  // namespace chromeos
97