#ifndef MYX_QT_POSIX_SIGNAL_WATCHER_P_HPP_
#define MYX_QT_POSIX_SIGNAL_WATCHER_P_HPP_

#pragma once

#include <myx/base/config.hpp>
#include <myx/qt/posix_signal_watcher.hpp>

#include <QObject>
#include <QMap>
#include <QSocketNotifier>
#include <QtDebug>

#include <memory>

#ifdef Q_OS_WIN
#define MYX_QT_HAS_POSIX_SIGNALS 0
#else
#define MYX_QT_HAS_POSIX_SIGNALS 1
#endif

#if MYX_QT_HAS_POSIX_SIGNALS
#include <csignal>
#include <sys/socket.h>
#include <unistd.h>
#include <cerrno>
#endif

namespace myx {

namespace qt {

/*!
 * \brief The PosixSignalWatcherPrivate class implements the back-end signal
 * handling for the PosixSignalWatcher.
 *
 * \see http://qt-project.org/doc/qt-5.0/qtdoc/POSIX-signals.html
 */
class PosixSignalWatcherPrivate : public QObject
{
	Q_OBJECT

public:
	PosixSignalWatcherPrivate( PosixSignalWatcher* q );
	~PosixSignalWatcherPrivate();

	void watchForSignal( int signal );
	static void signalHandler( int signal );

private:
	Q_DECLARE_PUBLIC( PosixSignalWatcher )

	PosixSignalWatcher* const q_ptr = nullptr;
	static std::array< int, 2 >        mSockpair;
	std::unique_ptr< QSocketNotifier > m_notifier;
	QList< int >                       m_watchedSignals;
}; // class PosixSignalWatcherPrivate

} // namespace qt

} // namespace myx

#endif // ifndef MYX_QT_POSIX_SIGNAL_WATCHER_P_HPP_