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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_POLICY_SCHEDULED_TASK_HANDLER_REBOOT_NOTIFICATIONS_SCHEDULER_H_
#define CHROME_BROWSER_ASH_POLICY_SCHEDULED_TASK_HANDLER_REBOOT_NOTIFICATIONS_SCHEDULER_H_
#include <vector>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observation.h"
#include "base/time/time.h"
#include "base/timer/wall_clock_timer.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/ash/device_scheduled_reboot/reboot_notification_controller.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/session_manager/core/session_manager.h"
#include "components/session_manager/core/session_manager_observer.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
namespace base {
class Clock;
class TickClock;
} // namespace base
namespace policy {
// This class schedules timers for showing pending reboot notification and
// dialog when scheduled reboot policy is set. The class also schedules
// post-reboot notification shown to the user after the policy reboot. If the
// full restore service is available for the user profile, post reboot
// notification is integrated with full restore notification. Otherwise, a
// simple post reboot notification is shown.
class RebootNotificationsScheduler
: public session_manager::SessionManagerObserver {
public:
// Represents the source of notification request. `kMaxValue` is used to
// determine the number of items, update it when adding a new item.
enum class Requester {
kScheduledRebootPolicy,
kRebootCommand,
kMaxValue = kRebootCommand
};
using RebootButtonCallback = base::OnceClosure;
RebootNotificationsScheduler();
RebootNotificationsScheduler(const RebootNotificationsScheduler&) = delete;
RebootNotificationsScheduler& operator=(const RebootNotificationsScheduler&) =
delete;
~RebootNotificationsScheduler() override;
// Returns current RebootNotificationsScheduler instance or NULL if it hasn't
// been initialized yet.
static RebootNotificationsScheduler* Get();
// Registers boolean pref for showing post reboot notification.
static void RegisterProfilePrefs(PrefRegistrySimple* registry);
// Returns true if the pref for showing the post reboot notification is set
// for the |profile|.
static bool ShouldShowPostRebootNotification(Profile* profile);
// Schedules timers for showing pending reboot notification and dialog or
// shows them right away if the scheduled reboot time is soon. If there
// already is a scheduled notification, either reschedules notification or
// puts the new one in the pending queue. Always picks the earliest
// notification from the queue and the new one.
void SchedulePendingRebootNotifications(
RebootButtonCallback reboot_button_callback,
const base::Time& reboot_time,
Requester requester);
// Sets pref for showing the post reboot notification for the active user.
void SchedulePostRebootNotification();
// Resets the state of `requester`. If it is the current requester showing
// notifications, takes another requester from the pending queue. Otherwise,
// removes `requester` from the pending queue if present.
void CancelRebootNotifications(Requester requester);
// SessionManagerObserver:
void OnUserSessionStarted(bool is_primary_user) override;
// Shows simple post reboot notification if |show_simple_notification| flag is
// set to true and unsets the pref for showing the post reboot notification.
void MaybeShowPostRebootNotification(bool show_simple_notification);
protected:
RebootNotificationsScheduler(const base::Clock* clock,
const base::TickClock* tick_clock);
// Runs |reboot_callback_| when user clicks on "Reboot now" button of the
// dialog or notification.
void OnRebootButtonClicked();
absl::optional<Requester> GetCurrentRequesterForTesting() const;
std::vector<Requester> GetRequestersForTesting() const;
// Sets RebootNotificationsScheduler instance.
static void SetInstance(
RebootNotificationsScheduler* reboot_notifications_scheduler);
private:
// Queue of notification requests prioritized by reboot time from the earliest
// to the latest.
class RequestQueue;
void SchedulePendingRebootNotificationsForCurrentRequester();
virtual void MaybeShowPendingRebootNotification();
virtual void MaybeShowPendingRebootDialog();
// Returns prefs for active profile or nullptr.
virtual PrefService* GetPrefsForActiveProfile() const;
// Returns delay from now until |reboot_time|.
base::TimeDelta GetRebootDelay(const base::Time& reboot_time) const;
// Closes the pending reboot notification and the reboot dialog.
virtual void CloseNotifications();
// Returns true if the full restore service is available for the profile and
// we need to wait for full restore service initialization.
virtual bool ShouldWaitFullRestoreInit() const;
// Resets timers and closes notification and dialog if open.
void ResetNotificationState();
// Returns true if the pref for showing the post reboot notification is set in
// |prefs|.
static bool IsPostRebootPrefSet(PrefService* prefs);
// Pointer to the existing RebootNotificationsScheduler instance (if any). Not
// owned.
static RebootNotificationsScheduler* instance;
std::unique_ptr<RequestQueue> requester_queue_;
// Timers for scheduling notification or dialog displaying.
base::WallClockTimer notification_timer_, dialog_timer_;
// Controller responsible for creating notifications and dialog.
RebootNotificationController notification_controller_;
base::ScopedObservation<session_manager::SessionManager,
session_manager::SessionManagerObserver>
observation_{this};
base::raw_ptr<const base::Clock> clock_;
base::WeakPtrFactory<RebootNotificationsScheduler> weak_ptr_factory_{this};
};
} // namespace policy
#endif // CHROME_BROWSER_ASH_POLICY_SCHEDULED_TASK_HANDLER_REBOOT_NOTIFICATIONS_SCHEDULER_H_