singleapplication.cpp
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singleapplication.cpp
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	#include "singleapplication.h"

	/**
	* @brief SingleApplication::SingleApplication
	* Constructor. Checks and fires up LocalServer or closes the program
	* if another instance already exists
	* @param argc
	* @param argv
	*/
	SingleApplication::SingleApplication(int argc, char *argv[]) :
	QGuiApplication(argc, argv)
	{
	_shouldContinue = false; // By default this is not the main process

	socket = new QLocalSocket();

	// Attempt to connect to the LocalServer
	socket->connectToServer(LOCAL_SERVER_NAME);
	if(socket->waitForConnected(100)){
	socket->write("CMD:showUp");
	socket->flush();
	QThread::msleep(100);
	socket->close();
	} else {
	// The attempt was insuccessful, so we continue the program
	_shouldContinue = true;
	server = new LocalServer();
	server->start();
	QObject::connect(server, SIGNAL(showUp()), this, SLOT(slotShowUp()));
	}
	}

	/**
	* @brief SingleApplication::~SingleApplication
	* Destructor
	*/
	Application::~SingleApplication()
	{
	if(_shouldContinue){
	server->terminate();
	}
	}

	/**
	* @brief SingleApplication::shouldContinue
	* Weather the program should be terminated
	* @return bool
	*/
	bool SingleApplication::shouldContinue()
	{
	return _shouldContinue;
	}

	/**
	* @brief SingleApplication::slotShowUp
	* Executed when the showUp command is sent to LocalServer
	*/
	void SingleApplication::slotShowUp()
	{
	emit showUp();
	}