chromium/chromeos/ash/components/tether/notification_remover.h

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROMEOS_ASH_COMPONENTS_TETHER_NOTIFICATION_REMOVER_H_
#define CHROMEOS_ASH_COMPONENTS_TETHER_NOTIFICATION_REMOVER_H_

#include "base/memory/raw_ptr.h"
#include "chromeos/ash/components/network/network_state_handler_observer.h"
#include "chromeos/ash/components/tether/active_host.h"
#include "chromeos/ash/components/tether/host_scan_cache.h"

namespace ash {
class NetworkStateHandler;
}  // namespace ash

namespace ash::tether {

class NotificationPresenter;

// Removes "Available Hotspot" notifications when there are no potential
// hotspots nearby, or when the device connects to a network, or when the Active
// Host status changes to "connected" or "connecting", and removes "Available
// Hotspot", "Setup Required", and "Connection Failed" notifications when it is
// destroyed.
class NotificationRemover : public HostScanCache::Observer,
                            public NetworkStateHandlerObserver,
                            public ActiveHost::Observer {
 public:
  NotificationRemover(NetworkStateHandler* network_state_handler,
                      NotificationPresenter* notification_presenter,
                      HostScanCache* host_scan_cache,
                      ActiveHost* active_host);

  NotificationRemover(const NotificationRemover&) = delete;
  NotificationRemover& operator=(const NotificationRemover&) = delete;

  ~NotificationRemover() override;

  // HostScanCache::Observer:
  void OnCacheBecameEmpty() override;

  // NetworkStateHandlerObserver:
  void NetworkConnectionStateChanged(const NetworkState* network) override;
  void OnShuttingDown() override;

  // ActiveHost::Observer:
  void OnActiveHostChanged(
      const ActiveHost::ActiveHostChangeInfo& active_host_change_info) override;

 private:
  raw_ptr<NetworkStateHandler> network_state_handler_;

  NetworkStateHandlerScopedObservation network_state_handler_observer_{this};

  raw_ptr<NotificationPresenter> notification_presenter_;
  raw_ptr<HostScanCache> host_scan_cache_;
  raw_ptr<ActiveHost> active_host_;
};

}  // namespace ash::tether

#endif  // CHROMEOS_ASH_COMPONENTS_TETHER_NOTIFICATION_REMOVER_H_