remotelaboratory/clients/tde/src/part/fpgaview/part.cpp

/*
 * Remote Laboratory FPGA Viewer Part
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * (c) 2012 Timothy Pearson
 * Raptor Engineering
 * http://www.raptorengineeringinc.com
 */

#include "define.h"
#include "part.h"

#include <kaboutdata.h>   //::createAboutData()
#include <kaction.h>
#include <klocale.h>
#include <kmessagebox.h>  //::start()
#include <kparts/genericfactory.h>
#include <kstatusbar.h>
#include <kstdaction.h>
#include <tqfile.h>        //encodeName()
#include <tqtimer.h>       //postInit() hack
#include <tqvbox.h>
#include <tqsocket.h>
#include <tqmutex.h>
#include <tqeventloop.h>
#include <tqapplication.h>
#include <unistd.h>       //access()
#include <stdint.h>



#include "tracewidget.h"
#include "floatspinbox.h"
#include "layout.h"

/* exception handling */
struct exit_exception {
	int c;
	exit_exception(int c):c(c) { }
};

namespace RemoteLab {

typedef KParts::GenericFactory<RemoteLab::FPGAViewPart> Factory;
K_EXPORT_COMPONENT_FACTORY( libremotelab_fpgaviewer, RemoteLab::Factory )


FPGAViewPart::FPGAViewPart(TQWidget *parentWidget, const char *widgetName, TQObject *parent, const char *name, const TQStringList&)
	: ReadOnlyPart( parent, name ), m_socket(0), m_base(0)
{
	// Initialize mutex
	m_instrumentMutex = new TQMutex(false);

	// Initialize kpart
	setInstance(Factory::instance());
	setWidget(new TQVBox(parentWidget, widgetName));

	// Create timers
	m_updateTimer = new TQTimer(this);

	// Create widgets
	m_base = new FPGAViewBase(widget());

	TQTimer::singleShot(0, this, TQT_SLOT(postInit()));
}

FPGAViewPart::~FPGAViewPart() {
	if (m_socket) {
		m_socket->close();
		while (m_socket->state() == TQSocket::Closing) {
			tqApp->processEvents();
		}
		delete m_socket;
	}

	delete m_instrumentMutex;
}

void FPGAViewPart::postInit() {
	connect(m_updateTimer, SIGNAL(timeout()), this, SLOT(updateDisplay()));
}

bool FPGAViewPart::openURL(const KURL &url) {
	return connectToServer(url.url());
}

bool FPGAViewPart::closeURL() {
	if (m_socket) {
		m_socket->close();
	
		while (m_socket->state() != TQSocket::Idle) {
			tqApp->processEvents();
		}
	}

	m_url = KURL();

	if (m_instrumentMutex->locked()) {
		throw exit_exception(-1);
	}

	return true;
}

int FPGAViewPart::connectToServer(TQString server) {
	if (!m_socket) {
		m_socket = new TDEKerberosClientSocket(this);
	}
	m_socket->setServiceName("remotefpga");
	m_socket->setServerFQDN(server);
	m_socket->connectToHost(server, 4004);
	while ((m_socket->state() != TQSocket::Connected) && (m_socket->state() != TQSocket::Idle)) {
		tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
	}
	if (m_socket->state() != TQSocket::Connected) {
		return -1;
	}
	if (m_socket->setUsingKerberos(true) != 0) {
		m_socket->close();
		KMessageBox::error(0, i18n("<qt>Unable to establish Kerberos protocol with remote server<p>Please verify that you currently hold a valid Kerberos ticket</qt>"), i18n("Connection Failed"));
		return -1;
	}
	TQDataStream ds(m_socket);
	// RAJA FIXME
	// How do we know which service to request?
// 	ds << TQString("SERV");
// 	ds << 

	return 0;
}

void FPGAViewPart::updateDisplay() {
	// RAJA FIXME
}

KAboutData* FPGAViewPart::createAboutData() {
	return new KAboutData( APP_NAME, I18N_NOOP( APP_PRETTYNAME ), APP_VERSION );
}

} //namespace RemoteLab

#include "part.moc"