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/*
* Copyright (C) 2016-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#pragma once
namespace PERIPHERALS
{
class CEventPollHandle;
/*!
* \brief Callback implemented by event scanner
*/
class IEventPollCallback
{
public:
virtual ~IEventPollCallback(void) = default;
virtual void Activate(CEventPollHandle& handle) = 0;
virtual void Deactivate(CEventPollHandle& handle) = 0;
virtual void HandleEvents(bool bWait) = 0;
virtual void Release(CEventPollHandle& handle) = 0;
};
/*!
* \brief Handle returned by the event scanner to control scan timing
*
* When held, this allows one to control the timing of when events are
* handled.
*/
class CEventPollHandle
{
public:
/*!
* \brief Create an active polling handle
*/
CEventPollHandle(IEventPollCallback& callback);
/*!
* \brief Handle is automatically released when this class is destructed
*/
~CEventPollHandle();
/*!
* \brief Activate handle
*/
void Activate();
/*!
* \brief Deactivate handle
*/
void Deactivate();
/*!
* \brief Trigger a scan for events
*
* \param bWait If true, this blocks until all events are handled
*/
void HandleEvents(bool bWait);
private:
IEventPollCallback& m_callback;
};
} // namespace PERIPHERALS
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