src/chrome/browser/chromeos/app_mode/kiosk_mode_idle_app_name_notification.cc

   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 #include "chrome/browser/chromeos/app_mode/kiosk_mode_idle_app_name_notification.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/wm/user_activity_detector.h"
   9 #include "base/bind.h"
  10 #include "base/command_line.h"
  11 #include "base/logging.h"
  12 #include "chrome/browser/chromeos/login/user_manager.h"
  13 #include "chrome/browser/chromeos/ui/idle_app_name_notification_view.h"
  14 #include "chrome/browser/extensions/extension_service.h"
  15 #include "chrome/browser/profiles/profile_manager.h"
  16 #include "chrome/common/chrome_switches.h"
  17 #include "chromeos/dbus/dbus_thread_manager.h"
  18 #include "extensions/browser/extension_system.h"
  19
  20 namespace chromeos {
  21
  22 namespace {
  23
  24 // The timeout in ms before the message shows up.
  25 const int kIdleAppNameNotificationTimeoutMs = 2 * 60 * 1000;
  26
  27 // The duration of visibility for the message.
  28 const int kMessageVisibilityTimeMs = 3000;
  29
  30 // The anomation time to show / hide the message.
  31 const int kMessageAnimationTimeMs = 200;
  32
  33 // Our global instance of the Kiosk mode message.
  34 KioskModeIdleAppNameNotification* g_kiosk_mode_idle_app_message = NULL;
  35
  36 }  // namespace
  37
  38 // static
  39 void KioskModeIdleAppNameNotification::Initialize() {
  40   DCHECK(!g_kiosk_mode_idle_app_message);
  41   g_kiosk_mode_idle_app_message = new KioskModeIdleAppNameNotification();
  42 }
  43
  44 // static
  45 void KioskModeIdleAppNameNotification::Shutdown() {
  46   if (g_kiosk_mode_idle_app_message) {
  47     delete g_kiosk_mode_idle_app_message;
  48     g_kiosk_mode_idle_app_message = NULL;
  49   }
  50 }
  51
  52 KioskModeIdleAppNameNotification::KioskModeIdleAppNameNotification()
  53     : show_notification_upon_next_user_activity_(false) {
  54   // Note: The timeout is currently fixed. If that changes we need to check if
  55   // the KioskModeSettings were already initialized.
  56   Setup();
  57 }
  58
  59 KioskModeIdleAppNameNotification::~KioskModeIdleAppNameNotification() {
  60   if (ash::Shell::HasInstance() &&
  61       ash::Shell::GetInstance()->user_activity_detector()->HasObserver(this)) {
  62     ash::Shell::GetInstance()->user_activity_detector()->RemoveObserver(this);
  63     // At this time the DBusThreadManager might already be gone.
  64     if (chromeos::DBusThreadManager::IsInitialized())
  65       chromeos::DBusThreadManager::Get()->GetPowerManagerClient(
  66           )->RemoveObserver(this);
  67   }
  68 }
  69
  70 void KioskModeIdleAppNameNotification::Setup() {
  71   DCHECK(UserManager::Get()->IsUserLoggedIn());
  72   Start();
  73 }
  74
  75 void KioskModeIdleAppNameNotification::OnUserActivity(const ui::Event* event) {
  76   if (show_notification_upon_next_user_activity_) {
  77     CommandLine* command_line = CommandLine::ForCurrentProcess();
  78     const std::string app_id =
  79         command_line->GetSwitchValueASCII(::switches::kAppId);
  80     Profile* profile = ProfileManager::GetActiveUserProfile();
  81     notification_.reset(
  82         new IdleAppNameNotificationView(
  83             kMessageVisibilityTimeMs,
  84             kMessageAnimationTimeMs,
  85             extensions::ExtensionSystem::Get(profile
  86                 )->extension_service()->GetInstalledExtension(app_id)));
  87     show_notification_upon_next_user_activity_ = false;
  88   }
  89   ResetTimer();
  90 }
  91
  92 void KioskModeIdleAppNameNotification::SystemResumed(
  93     const base::TimeDelta& sleep_duration) {
  94   // When we come back from a system resume we stop the timer and show the
  95   // message.
  96   timer_.Stop();
  97   OnTimeout();
  98 }
  99
 100 void KioskModeIdleAppNameNotification::Start() {
 101   if (!ash::Shell::GetInstance()->user_activity_detector()->HasObserver(this)) {
 102     ash::Shell::GetInstance()->user_activity_detector()->AddObserver(this);
 103     chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(
 104         this);
 105   }
 106   ResetTimer();
 107 }
 108
 109 void KioskModeIdleAppNameNotification::ResetTimer() {
 110   if (timer_.IsRunning()) {
 111     timer_.Reset();
 112   } else {
 113     // OneShotTimer destroys the posted task after running it, so Reset()
 114     // isn't safe to call on a timer that's already fired.
 115     timer_.Start(
 116         FROM_HERE,
 117         base::TimeDelta::FromMilliseconds(kIdleAppNameNotificationTimeoutMs),
 118         base::Bind(&KioskModeIdleAppNameNotification::OnTimeout,
 119                    base::Unretained(this)));
 120   }
 121 }
 122
 123 void KioskModeIdleAppNameNotification::OnTimeout() {
 124   show_notification_upon_next_user_activity_ = true;
 125 }
 126
 127 }  // namespace chromeos