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// 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_TETHER_COMPONENT_H_
#define CHROMEOS_ASH_COMPONENTS_TETHER_TETHER_COMPONENT_H_
#include "base/observer_list.h"
namespace ash {
namespace tether {
// Initializes the Tether component.
class TetherComponent {
public:
class Observer {
public:
Observer() {}
virtual ~Observer() {}
virtual void OnShutdownComplete() = 0;
};
enum class Status { ACTIVE, SHUTTING_DOWN, SHUT_DOWN };
enum class ShutdownReason {
OTHER = 0,
USER_LOGGED_OUT = 3,
USER_CLOSED_LID = 4,
PREF_DISABLED = 5,
BLUETOOTH_DISABLED = 6,
CELLULAR_DISABLED = 7,
BLUETOOTH_CONTROLLER_DISAPPEARED = 8,
MULTIDEVICE_HOST_UNVERIFIED = 9,
BETTER_TOGETHER_SUITE_DISABLED = 10
};
TetherComponent();
TetherComponent(const TetherComponent&) = delete;
TetherComponent& operator=(const TetherComponent&) = delete;
virtual ~TetherComponent();
// Requests that the Tether component shuts down. If the component can be shut
// down synchronously, this causes TetherComponent to transition to the
// SHUT_DOWN status immediately. However, if the component requires an
// asynchronous shutdown, the class transitions to the SHUTTING_DOWN status;
// once an asynchronous shutdown completes, TetherComponent transitions to the
// SHUT_DOWN status and notifies observers.
virtual void RequestShutdown(const ShutdownReason& shutdown_reason) = 0;
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
Status status() { return status_; }
void TransitionToStatus(Status new_status);
private:
Status status_ = Status::ACTIVE;
base::ObserverList<Observer>::UncheckedAndDanglingUntriaged observer_list_;
};
} // namespace tether
} // namespace ash
#endif // CHROMEOS_ASH_COMPONENTS_TETHER_TETHER_COMPONENT_H_
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