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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SYSTEM_SESSION_LOGOUT_CONFIRMATION_CONTROLLER_H_
#define ASH_SYSTEM_SESSION_LOGOUT_CONFIRMATION_CONTROLLER_H_
#include <memory>
#include "ash/ash_export.h"
#include "ash/public/cpp/session/session_observer.h"
#include "base/functional/callback_forward.h"
#include "base/memory/raw_ptr.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
class PrefRegistrySimple;
namespace base {
class TickClock;
}
namespace ash {
class LogoutConfirmationDialog;
// This class shows a dialog asking the user to confirm or deny logout and
// terminates the session if the user either confirms or allows the countdown
// shown in the dialog to expire.
//
// It is guaranteed that no more than one confirmation dialog will be visible at
// any given time. If there are multiple requests to show a confirmation dialog
// at the same time, the dialog whose countdown expires first is shown.
//
// In public sessions, asks the user to end the session when the last window is
// closed.
class ASH_EXPORT LogoutConfirmationController : public SessionObserver {
public:
enum class Source { kShelfExitButton, kCloseAllWindows };
class Observer : public base::CheckedObserver {
public:
// Will be called right before the logout confirmation dialog is shown.
virtual void OnLogoutConfirmationStarted() = 0;
};
LogoutConfirmationController();
LogoutConfirmationController(const LogoutConfirmationController&) = delete;
LogoutConfirmationController& operator=(const LogoutConfirmationController&) =
delete;
~LogoutConfirmationController() override;
static void RegisterProfilePrefs(PrefRegistrySimple* registry);
const base::TickClock* clock() const { return clock_; }
// Shows a LogoutConfirmationDialog. If a confirmation dialog is already being
// shown, it is closed and a new one opened if |logout_time| is earlier than
// the current dialog's |logout_time_|.
void ConfirmLogout(base::TimeTicks logout_time, Source source);
// SessionObserver:
void OnLoginStatusChanged(LoginStatus login_status) override;
void OnLockStateChanged(bool locked) override;
// Called by the |dialog_| when the user confirms logout.
void OnLogoutConfirmed();
// Called by the |dialog_| when it is closed.
void OnDialogClosed();
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// Overrides the internal clock for testing. This doesn't take the ownership
// of the clock. |clock| must outlive the LogoutConfirmationController
// instance.
void SetClockForTesting(const base::TickClock* clock);
void SetLogoutCallbackForTesting(
const base::RepeatingCallback<void(Source)>& logout_callback);
LogoutConfirmationDialog* dialog_for_testing() const { return dialog_; }
int confirm_logout_count_for_test() const {
return confirm_logout_count_for_test_;
}
private:
class LastWindowClosedObserver;
std::unique_ptr<LastWindowClosedObserver> last_window_closed_observer_;
raw_ptr<const base::TickClock> clock_;
base::RepeatingCallback<void(Source)> logout_callback_;
Source source_;
base::TimeTicks logout_time_;
raw_ptr<LogoutConfirmationDialog> dialog_ =
nullptr; // Owned by the Views hierarchy.
base::OneShotTimer logout_timer_;
int confirm_logout_count_for_test_ = 0;
base::ObserverList<Observer> observers_;
};
} // namespace ash
#endif // ASH_SYSTEM_SESSION_LOGOUT_CONFIRMATION_CONTROLLER_H_
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