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// Copyright 2018 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/ui/webui/chromeos/login/supervision_transition_screen_handler.h"
#include "ash/public/cpp/login_screen.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/metrics/histogram_macros.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chromeos/arc/arc_util.h"
#include "chrome/browser/chromeos/arc/session/arc_session_manager.h"
#include "chrome/browser/chromeos/login/oobe_screen.h"
#include "chrome/browser/chromeos/login/screens/supervision_transition_screen.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/ash/login_screen_client.h"
#include "chrome/browser/ui/ash/system_tray_client.h"
#include "chrome/grit/generated_resources.h"
#include "components/arc/arc_prefs.h"
#include "components/login/localized_values_builder.h"
namespace {
constexpr base::TimeDelta kWaitingTimeout = base::TimeDelta::FromMinutes(2);
} // namespace
namespace chromeos {
constexpr StaticOobeScreenId SupervisionTransitionScreenView::kScreenId;
SupervisionTransitionScreenHandler::SupervisionTransitionScreenHandler(
JSCallsContainer* js_calls_container)
: BaseScreenHandler(kScreenId, js_calls_container) {
}
SupervisionTransitionScreenHandler::~SupervisionTransitionScreenHandler() {
if (screen_)
screen_->OnViewDestroyed(this);
timer_.Stop();
}
void SupervisionTransitionScreenHandler::DeclareLocalizedValues(
::login::LocalizedValuesBuilder* builder) {
builder->Add("removingSupervisionTitle", IDS_REMOVING_SUPERVISION_TITLE);
builder->Add("addingSupervisionTitle", IDS_ADDING_SUPERVISION_TITLE);
builder->Add("supervisionTransitionIntroMessage",
IDS_SUPERVISION_TRANSITION_MESSAGE);
builder->Add("supervisionTransitionErrorTitle",
IDS_SUPERVISION_TRANSITION_ERROR_TITLE);
builder->Add("supervisionTransitionErrorMessage",
IDS_SUPERVISION_TRANSITION_ERROR_MESSAGE);
builder->Add("supervisionTransitionButton",
IDS_SUPERVISION_TRANSITION_ERROR_BUTTON);
}
void SupervisionTransitionScreenHandler::RegisterMessages() {
AddCallback(
"finishSupervisionTransition",
&SupervisionTransitionScreenHandler::OnSupervisionTransitionFinished);
BaseScreenHandler::RegisterMessages();
}
void SupervisionTransitionScreenHandler::Bind(
SupervisionTransitionScreen* screen) {
BaseScreenHandler::SetBaseScreen(screen);
screen_ = screen;
if (page_is_ready())
Initialize();
}
void SupervisionTransitionScreenHandler::Unbind() {
screen_ = nullptr;
BaseScreenHandler::SetBaseScreen(nullptr);
timer_.Stop();
}
void SupervisionTransitionScreenHandler::Show() {
if (!page_is_ready() || !screen_) {
show_on_init_ = true;
return;
}
screen_shown_time_ = base::TimeTicks::Now();
timer_.Start(
FROM_HERE, kWaitingTimeout,
base::BindOnce(
&SupervisionTransitionScreenHandler::OnSupervisionTransitionFailed,
weak_factory_.GetWeakPtr()));
registrar_.Init(profile_->GetPrefs());
registrar_.Add(
arc::prefs::kArcSupervisionTransition,
base::BindRepeating(
&SupervisionTransitionScreenHandler::OnSupervisionTransitionFinished,
weak_factory_.GetWeakPtr()));
// Disable system tray, shutdown button and prevent login as guest when
// supervision transition screen is shown.
SystemTrayClient::Get()->SetPrimaryTrayEnabled(false);
ash::LoginScreen::Get()->EnableShutdownButton(false);
ash::LoginScreen::Get()->SetAllowLoginAsGuest(false);
ash::LoginScreen::Get()->ShowGuestButtonInOobe(false);
base::DictionaryValue data;
data.SetBoolean("isRemovingSupervision",
arc::GetSupervisionTransition(profile_) ==
arc::ArcSupervisionTransition::CHILD_TO_REGULAR);
ShowScreenWithData(kScreenId, &data);
}
void SupervisionTransitionScreenHandler::Hide() {}
base::OneShotTimer* SupervisionTransitionScreenHandler::GetTimerForTesting() {
return &timer_;
}
void SupervisionTransitionScreenHandler::Initialize() {
profile_ = ProfileManager::GetPrimaryUserProfile();
if (!screen_ || !show_on_init_)
return;
Show();
show_on_init_ = false;
}
void SupervisionTransitionScreenHandler::OnSupervisionTransitionFailed() {
LOG(ERROR) << "Supervision transition failed; resetting ARC++ data.";
// Prevent ARC++ data removal below from triggering the success flow (since it
// will reset the supervision transition pref).
registrar_.RemoveAll();
timed_out_ = true;
arc::ArcSessionManager::Get()->RequestArcDataRemoval();
arc::ArcSessionManager::Get()->StopAndEnableArc();
if (screen_) {
AllowJavascript();
FireWebUIListener("supervision-transition-failed");
}
}
void SupervisionTransitionScreenHandler::OnSupervisionTransitionFinished() {
// This method is called both when supervision transition succeeds (observing
// pref changes) and when it fails ("OK" button from error screen, see
// RegisterMessages()). Once this screen exits, user session will be started,
// so there's no need to re-enable shutdown button from login screen, only the
// system tray.
SystemTrayClient::Get()->SetPrimaryTrayEnabled(true);
if (screen_)
screen_->OnSupervisionTransitionFinished();
UMA_HISTOGRAM_BOOLEAN("Arc.Supervision.Transition.Screen.Successful",
!timed_out_);
if (!timed_out_) {
base::TimeDelta timeDelta = base::TimeTicks::Now() - screen_shown_time_;
DVLOG(1) << "Transition succeeded in: " << timeDelta.InSecondsF();
UMA_HISTOGRAM_MEDIUM_TIMES(
"Arc.Supervision.Transition.Screen.Success.TimeDelta", timeDelta);
}
}
} // namespace chromeos
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