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// Copyright 2020 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_PHONEHUB_DO_NOT_DISTURB_CONTROLLER_H_
#define CHROMEOS_ASH_COMPONENTS_PHONEHUB_DO_NOT_DISTURB_CONTROLLER_H_
#include "base/observer_list.h"
#include "base/observer_list_types.h"
namespace ash::phonehub {
// Provides DND (Do Not Disturb) functionality for the connected phone. Clients
// can check whether DND is enabled and observe when that state has changed;
// additionally, this class provides an API for setting the DND state.
class DoNotDisturbController {
public:
class Observer : public base::CheckedObserver {
public:
~Observer() override = default;
virtual void OnDndStateChanged() = 0;
};
DoNotDisturbController(const DoNotDisturbController&) = delete;
DoNotDisturbController& operator=(const DoNotDisturbController&) = delete;
virtual ~DoNotDisturbController();
virtual bool IsDndEnabled() const = 0;
// Returns whether a new DoNotDisturb state can be set. If this returns false,
// then we are disabling the DoNotDisturb mode feature on the CrOS device.
virtual bool CanRequestNewDndState() const = 0;
// Note: Setting DND state is not a synchronous operation, since it requires
// sending a message to the connected phone. Use the observer interface to be
// notified of when the state changes.
virtual void RequestNewDoNotDisturbState(bool enabled) = 0;
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
protected:
friend class PhoneStatusProcessor;
DoNotDisturbController();
// This sets the internal state of the DoNotDisturb mode and and whether the
// DoNotDisturb state can be changed. This does not send a request to set the
// state of the remote phone device.
virtual void SetDoNotDisturbStateInternal(bool is_dnd_enabled,
bool can_request_new_dnd_state) = 0;
void NotifyDndStateChanged();
private:
base::ObserverList<Observer> observer_list_;
};
} // namespace ash::phonehub
#endif // CHROMEOS_ASH_COMPONENTS_PHONEHUB_DO_NOT_DISTURB_CONTROLLER_H_
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