chrome/browser/chromeos/login/wizard

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This source file includes following definitions.
weak_factory_
Init
GetNetworkScreen
GetUpdateScreen
GetUserImageScreen
GetEulaScreen
GetEnrollmentScreen
GetResetScreen
GetKioskEnableScreen
GetKioskAutolaunchScreen
GetTermsOfServiceScreen
GetWrongHWIDScreen
GetLocallyManagedUserCreationScreen
ShowNetworkScreen
ShowLoginScreen
ResumeLoginScreen
ShowUpdateScreen
ShowUserImageScreen
ShowEulaScreen
ShowEnrollmentScreen
ShowResetScreen
ShowKioskEnableScreen
ShowKioskAutolaunchScreen
ShowTermsOfServiceScreen
ShowWrongHWIDScreen
ShowLocallyManagedUserCreationScreen
SkipToLoginForTesting
AddObserver
RemoveObserver
OnSessionStart
SkipUpdateEnrollAfterEula
OnNetworkConnected
OnNetworkOffline
OnConnectionFailed
OnUpdateCompleted
OnEulaAccepted
OnUpdateErrorCheckingForUpdate
OnUpdateErrorUpdating
EnableUserImageScreenReturnToPreviousHack
OnUserImageSelected
OnUserImageSkipped
OnEnrollmentDone
OnResetCanceled
OnKioskAutolaunchCanceled
OnKioskAutolaunchConfirmed
OnKioskEnableCompleted
OnWrongHWIDWarningSkipped
OnAutoEnrollmentDone
OnOOBECompleted
OnTermsOfServiceDeclined
OnTermsOfServiceAccepted
InitiateOOBEUpdate
StartTimezoneResolve
PerformPostEulaActions
PerformOOBECompletedActions
SetCurrentScreen
ShowCurrentScreen
SetCurrentScreenSmooth
SetStatusAreaVisible
AdvanceToScreen
OnExit
OnSetUserNamePassword
SetUsageStatisticsReporting
GetUsageStatisticsReporting
GetErrorScreen
ShowErrorScreen
HideErrorScreen
OnAccessibilityStatusChanged
AutoLaunchKioskApp
SetZeroDelays
IsZeroDelayEnabled
SkipPostLoginScreensForTesting
ShouldAutoStartEnrollment
CanExitEnrollment
GetForcedEnrollmentDomain
OnLocalStateInitialized
StartAutoEnrollmentCheck
GetLocalState
OnLocationUpdated
OnTimezoneResolved
GetTimezoneProvider
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/chromeos/login/wizard_controller.h"

#include <signal.h>
#include <stdlib.h>
#include <sys/types.h>

#include <string>
#include <vector>

#include "base/bind.h"
#include "base/logging.h"
#include "base/metrics/histogram.h"
#include "base/prefs/pref_registry_simple.h"
#include "base/prefs/pref_service.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/thread_restrictions.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
#include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
#include "chrome/browser/chromeos/customization_document.h"
#include "chrome/browser/chromeos/login/enrollment/auto_enrollment_check_step.h"
#include "chrome/browser/chromeos/login/enrollment/enrollment_screen.h"
#include "chrome/browser/chromeos/login/existing_user_controller.h"
#include "chrome/browser/chromeos/login/helper.h"
#include "chrome/browser/chromeos/login/hwid_checker.h"
#include "chrome/browser/chromeos/login/login_display_host.h"
#include "chrome/browser/chromeos/login/login_location_monitor.h"
#include "chrome/browser/chromeos/login/login_utils.h"
#include "chrome/browser/chromeos/login/managed/locally_managed_user_creation_screen.h"
#include "chrome/browser/chromeos/login/oobe_display.h"
#include "chrome/browser/chromeos/login/screens/error_screen.h"
#include "chrome/browser/chromeos/login/screens/eula_screen.h"
#include "chrome/browser/chromeos/login/screens/kiosk_autolaunch_screen.h"
#include "chrome/browser/chromeos/login/screens/kiosk_enable_screen.h"
#include "chrome/browser/chromeos/login/screens/network_screen.h"
#include "chrome/browser/chromeos/login/screens/reset_screen.h"
#include "chrome/browser/chromeos/login/screens/terms_of_service_screen.h"
#include "chrome/browser/chromeos/login/screens/update_screen.h"
#include "chrome/browser/chromeos/login/screens/user_image_screen.h"
#include "chrome/browser/chromeos/login/screens/wrong_hwid_screen.h"
#include "chrome/browser/chromeos/login/startup_utils.h"
#include "chrome/browser/chromeos/login/user_manager.h"
#include "chrome/browser/chromeos/net/delay_network_call.h"
#include "chrome/browser/chromeos/net/network_portal_detector.h"
#include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
#include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
#include "chrome/browser/chromeos/settings/cros_settings.h"
#include "chrome/browser/chromeos/timezone/timezone_provider.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/options/options_util.h"
#include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/pref_names.h"
#include "chromeos/audio/cras_audio_handler.h"
#include "chromeos/chromeos_constants.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/dbus/session_manager_client.h"
#include "chromeos/network/network_state.h"
#include "chromeos/network/network_state_handler.h"
#include "chromeos/settings/cros_settings_names.h"
#include "chromeos/settings/timezone_settings.h"
#include "components/breakpad/app/breakpad_linux.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/notification_types.h"
#include "content/public/common/geoposition.h"
#include "ui/base/accelerators/accelerator.h"
#include "ui/base/l10n/l10n_util.h"

using content::BrowserThread;

namespace {
// If reboot didn't happen, ask user to reboot device manually.
const int kWaitForRebootTimeSec = 3;

// Interval in ms which is used for smooth screen showing.
static int kShowDelayMs = 400;

// Total timezone resolving process timeout.
const unsigned int kResolveTimeZoneTimeoutSeconds = 60;
}  // namespace

namespace chromeos {

const char WizardController::kNetworkScreenName[] = "network";
const char WizardController::kLoginScreenName[] = "login";
const char WizardController::kUpdateScreenName[] = "update";
const char WizardController::kUserImageScreenName[] = "image";
const char WizardController::kEulaScreenName[] = "eula";
const char WizardController::kEnrollmentScreenName[] = "enroll";
const char WizardController::kResetScreenName[] = "reset";
const char WizardController::kKioskEnableScreenName[] = "kiosk-enable";
const char WizardController::kKioskAutolaunchScreenName[] = "autolaunch";
const char WizardController::kErrorScreenName[] = "error-message";
const char WizardController::kTermsOfServiceScreenName[] = "tos";
const char WizardController::kWrongHWIDScreenName[] = "wrong-hwid";
const char WizardController::kLocallyManagedUserCreationScreenName[] =
  "locally-managed-user-creation-flow";
const char WizardController::kAppLaunchSplashScreenName[] =
  "app-launch-splash";

// static
const int WizardController::kMinAudibleOutputVolumePercent = 10;

// Passing this parameter as a "first screen" initiates full OOBE flow.
const char WizardController::kOutOfBoxScreenName[] = "oobe";

// Special test value that commands not to create any window yet.
const char WizardController::kTestNoScreenName[] = "test:nowindow";

// Initialize default controller.
// static
WizardController* WizardController::default_controller_ = NULL;

// static
bool WizardController::skip_post_login_screens_ = false;

// static
bool WizardController::zero_delay_enabled_ = false;

///////////////////////////////////////////////////////////////////////////////
// WizardController, public:

PrefService* WizardController::local_state_for_testing_ = NULL;

WizardController::WizardController(chromeos::LoginDisplayHost* host,
                                   chromeos::OobeDisplay* oobe_display)
    : current_screen_(NULL),
      previous_screen_(NULL),
#if defined(GOOGLE_CHROME_BUILD)
      is_official_build_(true),
#else
      is_official_build_(false),
#endif
      is_out_of_box_(false),
      host_(host),
      oobe_display_(oobe_display),
      usage_statistics_reporting_(true),
      skip_update_enroll_after_eula_(false),
      login_screen_started_(false),
      user_image_screen_return_to_previous_hack_(false),
      weak_factory_(this) {
  DCHECK(default_controller_ == NULL);
  default_controller_ = this;
  AccessibilityManager* accessibility_manager = AccessibilityManager::Get();
  CHECK(accessibility_manager);
  accessibility_subscription_ = accessibility_manager->RegisterCallback(
      base::Bind(&WizardController::OnAccessibilityStatusChanged,
                 base::Unretained(this)));
}

WizardController::~WizardController() {
  if (default_controller_ == this) {
    default_controller_ = NULL;
    LoginLocationMonitor::RemoveLocationCallback();
  } else {
    NOTREACHED() << "More than one controller are alive.";
  }
}

void WizardController::Init(
    const std::string& first_screen_name,
    scoped_ptr<base::DictionaryValue> screen_parameters) {
  VLOG(1) << "Starting OOBE wizard with screen: " << first_screen_name;
  first_screen_name_ = first_screen_name;
  screen_parameters_ = screen_parameters.Pass();

  bool oobe_complete = StartupUtils::IsOobeCompleted();
  if (!oobe_complete || first_screen_name == kOutOfBoxScreenName)
    is_out_of_box_ = true;

  // This is a hacky way to check for local state corruption, because
  // it depends on the fact that the local state is loaded
  // synchroniously and at the first demand. IsEnterpriseManaged()
  // check is required because currently powerwash is disabled for
  // enterprise-entrolled devices.
  //
  // TODO (ygorshenin@): implement handling of the local state
  // corruption in the case of asynchronious loading.
  //
  // TODO (ygorshenin@): remove IsEnterpriseManaged() check once
  // crbug.com/241313 will be fixed.
  policy::BrowserPolicyConnectorChromeOS* connector =
      g_browser_process->platform_part()->browser_policy_connector_chromeos();
  if (!connector->IsEnterpriseManaged()) {
    const PrefService::PrefInitializationStatus status =
        GetLocalState()->GetInitializationStatus();
    if (status == PrefService::INITIALIZATION_STATUS_ERROR) {
      OnLocalStateInitialized(false);
      return;
    } else if (status == PrefService::INITIALIZATION_STATUS_WAITING) {
      GetLocalState()->AddPrefInitObserver(
          base::Bind(&WizardController::OnLocalStateInitialized,
                     weak_factory_.GetWeakPtr()));
    }
  }

  AdvanceToScreen(first_screen_name);
  if (!IsMachineHWIDCorrect() && !StartupUtils::IsDeviceRegistered() &&
      first_screen_name.empty())
    ShowWrongHWIDScreen();
}

chromeos::NetworkScreen* WizardController::GetNetworkScreen() {
  if (!network_screen_.get())
    network_screen_.reset(new chromeos::NetworkScreen(
        this, oobe_display_->GetNetworkScreenActor()));
  return network_screen_.get();
}

chromeos::UpdateScreen* WizardController::GetUpdateScreen() {
  if (!update_screen_.get()) {
    update_screen_.reset(new chromeos::UpdateScreen(
        this, oobe_display_->GetUpdateScreenActor()));
    update_screen_->SetRebootCheckDelay(kWaitForRebootTimeSec);
  }
  return update_screen_.get();
}

chromeos::UserImageScreen* WizardController::GetUserImageScreen() {
  if (!user_image_screen_.get())
    user_image_screen_.reset(
        new chromeos::UserImageScreen(
            this, oobe_display_->GetUserImageScreenActor()));
  return user_image_screen_.get();
}

chromeos::EulaScreen* WizardController::GetEulaScreen() {
  if (!eula_screen_.get())
    eula_screen_.reset(new chromeos::EulaScreen(
        this, oobe_display_->GetEulaScreenActor()));
  return eula_screen_.get();
}

chromeos::EnrollmentScreen*
    WizardController::GetEnrollmentScreen() {
  if (!enrollment_screen_.get()) {
    enrollment_screen_.reset(
        new chromeos::EnrollmentScreen(
            this, oobe_display_->GetEnrollmentScreenActor()));
  }
  return enrollment_screen_.get();
}

chromeos::ResetScreen* WizardController::GetResetScreen() {
  if (!reset_screen_.get()) {
    reset_screen_.reset(
        new chromeos::ResetScreen(this, oobe_display_->GetResetScreenActor()));
  }
  return reset_screen_.get();
}

chromeos::KioskEnableScreen* WizardController::GetKioskEnableScreen() {
  if (!kiosk_enable_screen_.get()) {
    kiosk_enable_screen_.reset(
        new chromeos::KioskEnableScreen(
            this,
            oobe_display_->GetKioskEnableScreenActor()));
  }
  return kiosk_enable_screen_.get();
}

chromeos::KioskAutolaunchScreen* WizardController::GetKioskAutolaunchScreen() {
  if (!autolaunch_screen_.get()) {
    autolaunch_screen_.reset(
        new chromeos::KioskAutolaunchScreen(
            this, oobe_display_->GetKioskAutolaunchScreenActor()));
  }
  return autolaunch_screen_.get();
}

chromeos::TermsOfServiceScreen* WizardController::GetTermsOfServiceScreen() {
  if (!terms_of_service_screen_.get()) {
    terms_of_service_screen_.reset(
        new chromeos::TermsOfServiceScreen(
            this, oobe_display_->GetTermsOfServiceScreenActor()));
  }
  return terms_of_service_screen_.get();
}

chromeos::WrongHWIDScreen* WizardController::GetWrongHWIDScreen() {
  if (!wrong_hwid_screen_.get()) {
    wrong_hwid_screen_.reset(
        new chromeos::WrongHWIDScreen(
            this, oobe_display_->GetWrongHWIDScreenActor()));
  }
  return wrong_hwid_screen_.get();
}

chromeos::LocallyManagedUserCreationScreen*
    WizardController::GetLocallyManagedUserCreationScreen() {
  if (!locally_managed_user_creation_screen_.get()) {
    locally_managed_user_creation_screen_.reset(
        new chromeos::LocallyManagedUserCreationScreen(
            this, oobe_display_->GetLocallyManagedUserCreationScreenActor()));
  }
  return locally_managed_user_creation_screen_.get();
}

void WizardController::ShowNetworkScreen() {
  VLOG(1) << "Showing network screen.";
  SetStatusAreaVisible(false);
  SetCurrentScreen(GetNetworkScreen());
}

void WizardController::ShowLoginScreen(const LoginScreenContext& context) {
  if (!time_eula_accepted_.is_null()) {
    base::TimeDelta delta = base::Time::Now() - time_eula_accepted_;
    UMA_HISTOGRAM_MEDIUM_TIMES("OOBE.EULAToSignInTime", delta);
  }
  VLOG(1) << "Showing login screen.";
  SetStatusAreaVisible(true);
  host_->StartSignInScreen(context);
  smooth_show_timer_.Stop();
  oobe_display_ = NULL;
  login_screen_started_ = true;
}

void WizardController::ResumeLoginScreen() {
  VLOG(1) << "Resuming login screen.";
  SetStatusAreaVisible(true);
  host_->ResumeSignInScreen();
  smooth_show_timer_.Stop();
  oobe_display_ = NULL;
}

void WizardController::ShowUpdateScreen() {
  VLOG(1) << "Showing update screen.";
  SetStatusAreaVisible(true);
  SetCurrentScreen(GetUpdateScreen());
}

void WizardController::ShowUserImageScreen() {
  const chromeos::UserManager* user_manager = chromeos::UserManager::Get();
  // Skip user image selection for public sessions and ephemeral logins.
  if (user_manager->IsLoggedInAsPublicAccount() ||
      user_manager->IsCurrentUserNonCryptohomeDataEphemeral()) {
    OnUserImageSkipped();
    return;
  }
  VLOG(1) << "Showing user image screen.";

  bool profile_picture_enabled = true;
  std::string user_id;
  if (screen_parameters_.get()) {
    screen_parameters_->GetBoolean("profile_picture_enabled",
        &profile_picture_enabled);
    screen_parameters_->GetString("user_id", &user_id);
  }

  // Status area has been already shown at sign in screen so it
  // doesn't make sense to hide it here and then show again at user session as
  // this produces undesired UX transitions.
  SetStatusAreaVisible(true);

  UserImageScreen* screen = GetUserImageScreen();
  if (!user_id.empty())
    screen->SetUserID(user_id);
  screen->SetProfilePictureEnabled(profile_picture_enabled);

  SetCurrentScreen(screen);
}

void WizardController::ShowEulaScreen() {
  VLOG(1) << "Showing EULA screen.";
  SetStatusAreaVisible(false);
  SetCurrentScreen(GetEulaScreen());
}

void WizardController::ShowEnrollmentScreen() {
  SetStatusAreaVisible(true);

  bool is_auto_enrollment = false;
  std::string user;
  if (screen_parameters_.get()) {
    screen_parameters_->GetBoolean("is_auto_enrollment", &is_auto_enrollment);
    screen_parameters_->GetString("user", &user);
  }

  EnrollmentScreenActor::EnrollmentMode mode =
      EnrollmentScreenActor::ENROLLMENT_MODE_MANUAL;
  if (is_auto_enrollment)
    mode = EnrollmentScreenActor::ENROLLMENT_MODE_AUTO;
  else if (ShouldAutoStartEnrollment() && !CanExitEnrollment())
    mode = EnrollmentScreenActor::ENROLLMENT_MODE_FORCED;

  EnrollmentScreen* screen = GetEnrollmentScreen();
  screen->SetParameters(mode, GetForcedEnrollmentDomain(), user);
  SetCurrentScreen(screen);
}

void WizardController::ShowResetScreen() {
  VLOG(1) << "Showing reset screen.";
  SetStatusAreaVisible(false);
  SetCurrentScreen(GetResetScreen());
}

void WizardController::ShowKioskEnableScreen() {
  VLOG(1) << "Showing kiosk enable screen.";
  SetStatusAreaVisible(false);
  SetCurrentScreen(GetKioskEnableScreen());
}

void WizardController::ShowKioskAutolaunchScreen() {
  VLOG(1) << "Showing kiosk autolaunch screen.";
  SetStatusAreaVisible(false);
  SetCurrentScreen(GetKioskAutolaunchScreen());
}

void WizardController::ShowTermsOfServiceScreen() {
  // Only show the Terms of Service when logging into a public account and Terms
  // of Service have been specified through policy. In all other cases, advance
  // to the user image screen immediately.
  if (!chromeos::UserManager::Get()->IsLoggedInAsPublicAccount() ||
      !ProfileManager::GetActiveUserProfile()->GetPrefs()->
          IsManagedPreference(prefs::kTermsOfServiceURL)) {
    ShowUserImageScreen();
    return;
  }

  VLOG(1) << "Showing Terms of Service screen.";
  SetStatusAreaVisible(true);
  SetCurrentScreen(GetTermsOfServiceScreen());
}

void WizardController::ShowWrongHWIDScreen() {
  VLOG(1) << "Showing wrong HWID screen.";
  SetStatusAreaVisible(false);
  SetCurrentScreen(GetWrongHWIDScreen());
}

void WizardController::ShowLocallyManagedUserCreationScreen() {
  VLOG(1) << "Showing Locally managed user creation screen screen.";
  SetStatusAreaVisible(true);
  LocallyManagedUserCreationScreen* screen =
      GetLocallyManagedUserCreationScreen();
  SetCurrentScreen(screen);
}

void WizardController::SkipToLoginForTesting(
    const LoginScreenContext& context) {
  StartupUtils::MarkEulaAccepted();
  PerformPostEulaActions();
  PerformOOBECompletedActions();
  ShowLoginScreen(context);
}

void WizardController::AddObserver(Observer* observer) {
  observer_list_.AddObserver(observer);
}

void WizardController::RemoveObserver(Observer* observer) {
  observer_list_.RemoveObserver(observer);
}

void WizardController::OnSessionStart() {
  FOR_EACH_OBSERVER(Observer, observer_list_, OnSessionStart());
}

void WizardController::SkipUpdateEnrollAfterEula() {
  skip_update_enroll_after_eula_ = true;
}

///////////////////////////////////////////////////////////////////////////////
// WizardController, ExitHandlers:
void WizardController::OnNetworkConnected() {
  if (is_official_build_) {
    if (!StartupUtils::IsEulaAccepted()) {
      ShowEulaScreen();
    } else {
      // Possible cases:
      // 1. EULA was accepted, forced shutdown/reboot during update.
      // 2. EULA was accepted, planned reboot after update.
      // Make sure that device is up-to-date.
      InitiateOOBEUpdate();
    }
  } else {
    InitiateOOBEUpdate();
  }
}

void WizardController::OnNetworkOffline() {
  // TODO(dpolukhin): if(is_out_of_box_) we cannot work offline and
  // should report some error message here and stay on the same screen.
  ShowLoginScreen(LoginScreenContext());
}

void WizardController::OnConnectionFailed() {
  // TODO(dpolukhin): show error message after login screen is displayed.
  ShowLoginScreen(LoginScreenContext());
}

void WizardController::OnUpdateCompleted() {
  StartAutoEnrollmentCheck();
}

void WizardController::OnEulaAccepted() {
  time_eula_accepted_ = base::Time::Now();
  StartupUtils::MarkEulaAccepted();
  bool uma_enabled =
      OptionsUtil::ResolveMetricsReportingEnabled(usage_statistics_reporting_);

  CrosSettings::Get()->SetBoolean(kStatsReportingPref, uma_enabled);
  if (uma_enabled) {
#if defined(GOOGLE_CHROME_BUILD)
    // The crash reporter initialization needs IO to complete.
    base::ThreadRestrictions::ScopedAllowIO allow_io;
    breakpad::InitCrashReporter(std::string());
#endif
  }

  if (skip_update_enroll_after_eula_) {
    PerformPostEulaActions();
    PerformOOBECompletedActions();
    ShowEnrollmentScreen();
  } else {
    InitiateOOBEUpdate();
  }
}

void WizardController::OnUpdateErrorCheckingForUpdate() {
  // TODO(nkostylev): Update should be required during OOBE.
  // We do not want to block users from being able to proceed to the login
  // screen if there is any error checking for an update.
  // They could use "browse without sign-in" feature to set up the network to be
  // able to perform the update later.
  OnUpdateCompleted();
}

void WizardController::OnUpdateErrorUpdating() {
  // If there was an error while getting or applying the update,
  // return to network selection screen.
  // TODO(nkostylev): Show message to the user explaining update error.
  // TODO(nkostylev): Update should be required during OOBE.
  // Temporary fix, need to migrate to new API. http://crosbug.com/4321
  OnUpdateCompleted();
}

void WizardController::EnableUserImageScreenReturnToPreviousHack() {
  user_image_screen_return_to_previous_hack_ = true;
}

void WizardController::OnUserImageSelected() {
  if (user_image_screen_return_to_previous_hack_) {
    user_image_screen_return_to_previous_hack_ = false;
    DCHECK(previous_screen_);
    if (previous_screen_) {
      SetCurrentScreen(previous_screen_);
      return;
    }
  }
  // Launch browser and delete login host controller.
  BrowserThread::PostTask(
      BrowserThread::UI,
      FROM_HERE,
      base::Bind(&chromeos::LoginUtils::DoBrowserLaunch,
                 base::Unretained(chromeos::LoginUtils::Get()),
                 ProfileManager::GetActiveUserProfile(), host_));
  host_ = NULL;
}

void WizardController::OnUserImageSkipped() {
  OnUserImageSelected();
}

void WizardController::OnEnrollmentDone() {
  // Mark OOBE as completed only if enterprise enrollment was part of the
  // forced flow (i.e. app kiosk).
  if (ShouldAutoStartEnrollment())
    PerformOOBECompletedActions();

  // TODO(mnissler): Unify the logic for auto-login for Public Sessions and
  // Kiosk Apps and make this code cover both cases: http://crbug.com/234694.
  if (KioskAppManager::Get()->IsAutoLaunchEnabled())
    AutoLaunchKioskApp();
  else
    ShowLoginScreen(LoginScreenContext());
}

void WizardController::OnResetCanceled() {
  if (previous_screen_)
    SetCurrentScreen(previous_screen_);
  else
    ShowLoginScreen(LoginScreenContext());
}

void WizardController::OnKioskAutolaunchCanceled() {
  ShowLoginScreen(LoginScreenContext());
}

void WizardController::OnKioskAutolaunchConfirmed() {
  DCHECK(KioskAppManager::Get()->IsAutoLaunchEnabled());
  AutoLaunchKioskApp();
}

void WizardController::OnKioskEnableCompleted() {
  ShowLoginScreen(LoginScreenContext());
}

void WizardController::OnWrongHWIDWarningSkipped() {
  if (previous_screen_)
    SetCurrentScreen(previous_screen_);
  else
    ShowLoginScreen(LoginScreenContext());
}

void WizardController::OnAutoEnrollmentDone() {
  VLOG(1) << "Automagic enrollment done, resuming previous signin";
  ResumeLoginScreen();
}

void WizardController::OnOOBECompleted() {
  auto_enrollment_check_step_.reset();
  if (ShouldAutoStartEnrollment()) {
    ShowEnrollmentScreen();
  } else {
    PerformOOBECompletedActions();
    ShowLoginScreen(LoginScreenContext());
  }
}

void WizardController::OnTermsOfServiceDeclined() {
  // If the user declines the Terms of Service, end the session and return to
  // the login screen.
  DBusThreadManager::Get()->GetSessionManagerClient()->StopSession();
}

void WizardController::OnTermsOfServiceAccepted() {
  // If the user accepts the Terms of Service, advance to the user image screen.
  ShowUserImageScreen();
}

void WizardController::InitiateOOBEUpdate() {
  PerformPostEulaActions();
  SetCurrentScreenSmooth(GetUpdateScreen(), true);
  GetUpdateScreen()->StartNetworkCheck();
}

void WizardController::StartTimezoneResolve() const {
  LoginLocationMonitor::InstallLocationCallback(
      base::TimeDelta::FromSeconds(kResolveTimeZoneTimeoutSeconds));
}

void WizardController::PerformPostEulaActions() {
  DelayNetworkCall(
      base::Bind(&WizardController::StartTimezoneResolve,
                 weak_factory_.GetWeakPtr()),
      base::TimeDelta::FromMilliseconds(kDefaultNetworkRetryDelayMS));

  // Now that EULA has been accepted (for official builds), enable portal check.
  // ChromiumOS builds would go though this code path too.
  NetworkHandler::Get()->network_state_handler()->SetCheckPortalList(
      NetworkStateHandler::kDefaultCheckPortalList);
  host_->GetAutoEnrollmentController()->Start();
  host_->PrewarmAuthentication();
  NetworkPortalDetector::Get()->Enable(true);
}

void WizardController::PerformOOBECompletedActions() {
  StartupUtils::MarkOobeCompleted();
}

void WizardController::SetCurrentScreen(WizardScreen* new_current) {
  SetCurrentScreenSmooth(new_current, false);
}

void WizardController::ShowCurrentScreen() {
  // ShowCurrentScreen may get called by smooth_show_timer_ even after
  // flow has been switched to sign in screen (ExistingUserController).
  if (!oobe_display_)
    return;

  smooth_show_timer_.Stop();

  FOR_EACH_OBSERVER(Observer, observer_list_, OnScreenChanged(current_screen_));

  oobe_display_->ShowScreen(current_screen_);
}

void WizardController::SetCurrentScreenSmooth(WizardScreen* new_current,
                                              bool use_smoothing) {
  if (current_screen_ == new_current ||
      new_current == NULL ||
      oobe_display_ == NULL) {
    return;
  }

  smooth_show_timer_.Stop();

  if (current_screen_)
    oobe_display_->HideScreen(current_screen_);

  previous_screen_ = current_screen_;
  current_screen_ = new_current;

  if (use_smoothing) {
    smooth_show_timer_.Start(
        FROM_HERE,
        base::TimeDelta::FromMilliseconds(kShowDelayMs),
        this,
        &WizardController::ShowCurrentScreen);
  } else {
    ShowCurrentScreen();
  }
}

void WizardController::SetStatusAreaVisible(bool visible) {
  host_->SetStatusAreaVisible(visible);
}

void WizardController::AdvanceToScreen(const std::string& screen_name) {
  if (screen_name == kNetworkScreenName) {
    ShowNetworkScreen();
  } else if (screen_name == kLoginScreenName) {
    ShowLoginScreen(LoginScreenContext());
  } else if (screen_name == kUpdateScreenName) {
    InitiateOOBEUpdate();
  } else if (screen_name == kUserImageScreenName) {
    ShowUserImageScreen();
  } else if (screen_name == kEulaScreenName) {
    ShowEulaScreen();
  } else if (screen_name == kResetScreenName) {
    ShowResetScreen();
  } else if (screen_name == kKioskEnableScreenName) {
    ShowKioskEnableScreen();
  } else if (screen_name == kKioskAutolaunchScreenName) {
    ShowKioskAutolaunchScreen();
  } else if (screen_name == kEnrollmentScreenName) {
    ShowEnrollmentScreen();
  } else if (screen_name == kTermsOfServiceScreenName) {
    ShowTermsOfServiceScreen();
  } else if (screen_name == kWrongHWIDScreenName) {
    ShowWrongHWIDScreen();
  } else if (screen_name == kLocallyManagedUserCreationScreenName) {
    ShowLocallyManagedUserCreationScreen();
  } else if (screen_name == kAppLaunchSplashScreenName) {
    AutoLaunchKioskApp();
  } else if (screen_name != kTestNoScreenName) {
    if (is_out_of_box_) {
      ShowNetworkScreen();
    } else {
      ShowLoginScreen(LoginScreenContext());
    }
  }
}

///////////////////////////////////////////////////////////////////////////////
// WizardController, chromeos::ScreenObserver overrides:
void WizardController::OnExit(ExitCodes exit_code) {
  VLOG(1) << "Wizard screen exit code: " << exit_code;
  switch (exit_code) {
    case NETWORK_CONNECTED:
      OnNetworkConnected();
      break;
    case CONNECTION_FAILED:
      OnConnectionFailed();
      break;
    case UPDATE_INSTALLED:
    case UPDATE_NOUPDATE:
      OnUpdateCompleted();
      break;
    case UPDATE_ERROR_CHECKING_FOR_UPDATE:
      OnUpdateErrorCheckingForUpdate();
      break;
    case UPDATE_ERROR_UPDATING:
      OnUpdateErrorUpdating();
      break;
    case USER_IMAGE_SELECTED:
      OnUserImageSelected();
      break;
    case EULA_ACCEPTED:
      OnEulaAccepted();
      break;
    case EULA_BACK:
      ShowNetworkScreen();
      break;
    case ENTERPRISE_AUTO_ENROLLMENT_CHECK_COMPLETED:
      OnOOBECompleted();
      break;
    case ENTERPRISE_ENROLLMENT_COMPLETED:
      OnEnrollmentDone();
      break;
    case ENTERPRISE_ENROLLMENT_BACK:
      ShowNetworkScreen();
      break;
    case RESET_CANCELED:
      OnResetCanceled();
      break;
    case KIOSK_AUTOLAUNCH_CANCELED:
      OnKioskAutolaunchCanceled();
      break;
    case KIOSK_AUTOLAUNCH_CONFIRMED:
      OnKioskAutolaunchConfirmed();
      break;
    case KIOSK_ENABLE_COMPLETED:
      OnKioskEnableCompleted();
      break;
    case ENTERPRISE_AUTO_MAGIC_ENROLLMENT_COMPLETED:
      OnAutoEnrollmentDone();
      break;
    case TERMS_OF_SERVICE_DECLINED:
      OnTermsOfServiceDeclined();
      break;
    case TERMS_OF_SERVICE_ACCEPTED:
      OnTermsOfServiceAccepted();
      break;
    case WRONG_HWID_WARNING_SKIPPED:
      OnWrongHWIDWarningSkipped();
      break;
    default:
      NOTREACHED();
  }
}

void WizardController::OnSetUserNamePassword(const std::string& username,
                                             const std::string& password) {
  username_ = username;
  password_ = password;
}

void WizardController::SetUsageStatisticsReporting(bool val) {
  usage_statistics_reporting_ = val;
}

bool WizardController::GetUsageStatisticsReporting() const {
  return usage_statistics_reporting_;
}

chromeos::ErrorScreen* WizardController::GetErrorScreen() {
  if (!error_screen_.get()) {
    error_screen_.reset(
        new chromeos::ErrorScreen(this, oobe_display_->GetErrorScreenActor()));
  }
  return error_screen_.get();
}

void WizardController::ShowErrorScreen() {
  VLOG(1) << "Showing error screen.";
  SetCurrentScreen(GetErrorScreen());
}

void WizardController::HideErrorScreen(WizardScreen* parent_screen) {
  DCHECK(parent_screen);
  VLOG(1) << "Hiding error screen.";
  SetCurrentScreen(parent_screen);
}

void WizardController::OnAccessibilityStatusChanged(
    const AccessibilityStatusEventDetails& details) {
  enum AccessibilityNotificationType type = details.notification_type;
  if (type == ACCESSIBILITY_MANAGER_SHUTDOWN) {
    accessibility_subscription_.reset();
    return;
  } else if (type != ACCESSIBILITY_TOGGLE_SPOKEN_FEEDBACK || !details.enabled) {
    return;
  }

  CrasAudioHandler* cras = CrasAudioHandler::Get();
  if (cras->IsOutputMuted()) {
    cras->SetOutputMute(false);
    cras->SetOutputVolumePercent(kMinAudibleOutputVolumePercent);
  } else if (cras->GetOutputVolumePercent() < kMinAudibleOutputVolumePercent) {
    cras->SetOutputVolumePercent(kMinAudibleOutputVolumePercent);
  }
}

void WizardController::AutoLaunchKioskApp() {
  KioskAppManager::App app_data;
  std::string app_id = KioskAppManager::Get()->GetAutoLaunchApp();
  CHECK(KioskAppManager::Get()->GetApp(app_id, &app_data));

  host_->StartAppLaunch(app_id, false /* diagnostic_mode */);
}

// static
void WizardController::SetZeroDelays() {
  kShowDelayMs = 0;
  zero_delay_enabled_ = true;
}

// static
bool WizardController::IsZeroDelayEnabled() {
  return zero_delay_enabled_;
}

// static
void WizardController::SkipPostLoginScreensForTesting() {
  skip_post_login_screens_ = true;
}

// static
bool WizardController::ShouldAutoStartEnrollment() {
  policy::BrowserPolicyConnectorChromeOS* connector =
      g_browser_process->platform_part()->browser_policy_connector_chromeos();
  return connector->GetDeviceCloudPolicyManager()->ShouldAutoStartEnrollment();
}

// static
bool WizardController::CanExitEnrollment() {
  policy::BrowserPolicyConnectorChromeOS* connector =
      g_browser_process->platform_part()->browser_policy_connector_chromeos();
  return connector->GetDeviceCloudPolicyManager()->CanExitEnrollment();
}

// static
std::string WizardController::GetForcedEnrollmentDomain() {
  policy::BrowserPolicyConnectorChromeOS* connector =
      g_browser_process->platform_part()->browser_policy_connector_chromeos();
  return connector->GetDeviceCloudPolicyManager()->GetForcedEnrollmentDomain();
}

void WizardController::OnLocalStateInitialized(bool /* succeeded */) {
  if (GetLocalState()->GetInitializationStatus() !=
      PrefService::INITIALIZATION_STATUS_ERROR) {
    return;
  }
  GetErrorScreen()->SetUIState(ErrorScreen::UI_STATE_LOCAL_STATE_ERROR);
  SetStatusAreaVisible(false);
  ShowErrorScreen();
}

void WizardController::StartAutoEnrollmentCheck() {
  auto_enrollment_check_step_.reset(
      new AutoEnrollmentCheckStep(this, host_->GetAutoEnrollmentController()));
  auto_enrollment_check_step_->Start();
}

PrefService* WizardController::GetLocalState() {
  if (local_state_for_testing_)
    return local_state_for_testing_;
  return g_browser_process->local_state();
}

// static
void WizardController::OnLocationUpdated(const content::Geoposition& position,
                                         const base::TimeDelta elapsed) {
  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));

  const base::TimeDelta timeout =
      base::TimeDelta::FromSeconds(kResolveTimeZoneTimeoutSeconds);
  if (elapsed >= timeout) {
    LOG(WARNING) << "Resolve TimeZone: got location after timeout ("
                 << elapsed.InSecondsF() << " seconds elapsed). Ignored.";
    return;
  }

  WizardController* self = default_controller();

  if (self == NULL) {
    LOG(WARNING) << "Resolve TimeZone: got location after WizardController "
                 << "has finished. (" << elapsed.InSecondsF() << " seconds "
                 << "elapsed). Ignored.";
    return;
  }

  // WizardController owns TimezoneProvider, so timezone request is silently
  // cancelled on destruction.
  self->GetTimezoneProvider()->RequestTimezone(
      position,
      false,  // sensor
      timeout - elapsed,
      base::Bind(&WizardController::OnTimezoneResolved,
                 base::Unretained(self)));
}

void WizardController::OnTimezoneResolved(
    scoped_ptr<TimeZoneResponseData> timezone,
    bool server_error) {
  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  DCHECK(timezone.get());
  // To check that "this" is not destroyed try to access some member
  // (timezone_provider_) in this case. Expect crash here.
  DCHECK(timezone_provider_.get());

  VLOG(1) << "Resolved local timezone={" << timezone->ToStringForDebug()
          << "}.";

  if (timezone->status != TimeZoneResponseData::OK) {
    LOG(WARNING) << "Resolve TimeZone: failed to resolve timezone.";
    return;
  }

  policy::BrowserPolicyConnectorChromeOS* connector =
      g_browser_process->platform_part()->browser_policy_connector_chromeos();
  if (connector->IsEnterpriseManaged()) {
    std::string policy_timezone;
    if (chromeos::CrosSettings::Get()->GetString(
            chromeos::kSystemTimezonePolicy, &policy_timezone) &&
        !policy_timezone.empty()) {
      VLOG(1) << "Resolve TimeZone: TimeZone settings are overridden"
              << " by DevicePolicy.";
      return;
    }
  }

  if (!timezone->timeZoneId.empty()) {
    VLOG(1) << "Resolve TimeZone: setting timezone to '" << timezone->timeZoneId
            << "'";

    chromeos::system::TimezoneSettings::GetInstance()->SetTimezoneFromID(
        base::UTF8ToUTF16(timezone->timeZoneId));
  }
}

TimeZoneProvider* WizardController::GetTimezoneProvider() {
  if (!timezone_provider_) {
    timezone_provider_.reset(
        new TimeZoneProvider(g_browser_process->system_request_context(),
                             DefaultTimezoneProviderURL()));
  }
  return timezone_provider_.get();
}

}  // namespace chromeos
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root/chrome/browser/chromeos/login/wizard_controller.cc

DEFINITIONS
