evorobotviewer.cpp

/********************************************************************************
 *  FARSA Experiments Library                                                   *
 *  Copyright (C) 2007-2012                                                     *
 *  Stefano Nolfi <stefano.nolfi@istc.cnr.it>                                   *
 *  Onofrio Gigliotta <onofrio.gigliotta@istc.cnr.it>                           *
 *  Gianluca Massera <emmegian@yahoo.it>                                        *
 *  Tomassino Ferrauto <tomassino.ferrauto@istc.cnr.it>                         *
 *                                                                              *
 *  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 2 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 St, Fifth Floor, Boston, MA  02110-1301  USA  *
 ********************************************************************************/

#include "evorobotviewer.h"
#include "abstracttest.h"
#include "tests.h"
#include "total99resources.h"
#include <QGridLayout>
#include <QPushButton>
#include <QCheckBox>
#include <QFileDialog>
#include <QVBoxLayout>
#include <QDir>
#include <QFileInfo>
#include <QFile>
#include <QEvent>
#include <QCoreApplication>
#include <QTimer>
#include <QSlider>
#include <cmath>

using namespace qglviewer;

// All the suff below is to avoid warnings on Windows about the use of unsafe
// functions. This should be only a temporary workaround, the solution is stop
// using C string and file functions...
#if defined(_MSC_VER)
    #pragma warning(push)
    #pragma warning(disable:4996)
#endif

namespace farsa {

EvoRobotViewer::EvoRobotViewer( EvoRobotComponent* component )
    : QObject(), ParameterSettableUI(), ConcurrentResourcesUser() {
    evorobot = component;
    ga = evorobot->getGA();
    shareResourcesWith(ga->getEvoRobotExperiment());

    // Declaring which resources we will need to use
    usableResources(QStringList() << "world" << "experiment");

    QTimer* timer = new QTimer(this);
    timer->setInterval( 40 );
    timer->setSingleShot( false );
    timer->start();

    // !! DO NOT CONNECT TO THE advanced SIGNAL to update the renderworld becuase that signals may be
    //    emitted so fast that the GUI will freeze !!
    //connect( world, SIGNAL(advanced()), this, SLOT(onWorldAdvance()), Qt::QueuedConnection );
    connect( timer, SIGNAL(timeout()), this, SLOT(onWorldAdvance()) );

    // Global connections
    ResourcesLocker locker(this);
    connect( evorobot, SIGNAL(actionFinished()), this, SLOT(onActionFinished()) );
}

EvoRobotViewer::~EvoRobotViewer()
{
    // Nothing to do
    // --- All objects are destroyed in others parts because none of them are owend by this object
}

void EvoRobotViewer::fillActionsMenu( QMenu* actionsMenu ) {
    actionsMenu->addAction( "Evolve", evorobot, SLOT(evolve()) );
    actionsMenu->addAction( "Stop", evorobot, SLOT(stop()) );
}

QList<ParameterSettableUIViewer> EvoRobotViewer::getViewers( QWidget* parent, Qt::WindowFlags flags ) {
    QList<ParameterSettableUIViewer> viewsList;
    viewsList.append( evogaControls( parent, flags ) );
//  viewsList.append( icubview( parent, flags ) );
    viewsList.append( fitview( parent, flags ) );
    viewsList.append( statview( parent, flags ) );
    viewsList.append( renderWorld( parent, flags ) );
    //--- check if there are some special view for the testing actions
    QStringList testsList = AvailableTestList::getList();
    for (int i = 0; i < testsList.size(); i++) {
        TestIndividual* testIndividual = dynamic_cast<TestIndividual*>(AvailableTestList::getTest(testsList[i]));
        if ( testIndividual ) {
            viewsList.append( testIndividualUI( testIndividual, parent, flags ) );
        }
    }
    return viewsList;
}

void EvoRobotViewer::addAdditionalMenus( QMenuBar* menuBar ) {
    QMenu* testMenu = menuBar->addMenu( "Tests" );
    QStringList testsList = AvailableTestList::getList();
    for (int i = 0; i < testsList.size(); i++) {
        AbstractTest* test = AvailableTestList::getTest(testsList[i]);
        QAction* action = testMenu->addAction( test->menuText(), evorobot, SLOT(runTestFromQAction()) );
        action->setData( QVariant(testsList[i]) );
        action->setToolTip( test->tooltip() );
        action->setIcon( QIcon( test->iconFilename() ) );
    }
}

ParameterSettableUIViewer EvoRobotViewer::renderWorld( QWidget* parent, Qt::WindowFlags flags )
{
    // Creating the wrapper class for RenderWorld and sharing resources
    renderworldwrapper = new RenderWorldWrapperWidget(parent, flags);
    renderworldwrapper->shareResourcesWith(this);

    return ParameterSettableUIViewer(renderworldwrapper, "RenderWorld");
}

ParameterSettableUIViewer EvoRobotViewer::evogaControls( QWidget* parent, Qt::WindowFlags flags ) {
    QWidget* widget = new QWidget( parent, flags );
    QGridLayout* lay = new QGridLayout( widget );
    //lay->setContentsMargins(0,0,0,0);

    // --- visualizzaione del trial corrente, e step corrente
    infoEvoga = new QLabel( "Information", widget );
    infoEvoga->setStyleSheet( "QLabel { font: bold normal large \"Courier\" }" );
    lay->addWidget( infoEvoga, 0, 0, 1, 2 );

    QPushButton* bt = new QPushButton( "Do Step", widget );
    bt->setAutoRepeat(true);
    bt->setEnabled( false );
    connect( bt, SIGNAL(clicked(bool)), ga, SLOT(doNextStep()) );

    QCheckBox* cb = new QCheckBox( "Step by Step Mode", widget );
    connect( cb, SIGNAL(clicked(bool)), ga, SLOT(enableStepByStep(bool)) );
    connect( cb, SIGNAL(clicked(bool)), bt, SLOT(setEnabled(bool)) );
    
    lay->addWidget( cb, 1, 0 );
    lay->addWidget( bt, 1, 1 );

    bt = new QPushButton( "Next Trial", widget );
    connect( bt, SIGNAL(clicked()), this, SLOT(evogaNextTrial()) );
    lay->addWidget( bt, 2, 0, 1, 2 );

    //----- Skip Trial... Go to Trial number N
    
    // slider to setup the delay for slowing down the simulation
    QLabel* lb = new QLabel( "Simulation Throttle - speed regulator", widget );
    lay->addWidget( lb, 3, 0, 1, 2 );
    simulationThrottle = new QSlider( widget );
    simulationThrottle->setMinimum( 0 );
    simulationThrottle->setMaximum( 100 );
    simulationThrottle->setMinimumHeight( 200 );
    simulationThrottle->setOrientation( Qt::Vertical );
    int currDelay = ga->getEvoRobotExperiment()->getStepDelay();
    simulationThrottle->setValue( floor(13.0*std::log((float)currDelay)) );
    connect( simulationThrottle, SIGNAL(valueChanged(int)), this, SLOT(onSimulationThrottleChanges(int)) );
    lay->addWidget( simulationThrottle, 4, 0, 3, 1 );
    lb = new QLabel( "slow", widget );
    lay->addWidget( lb, 4, 1 );
    
    QString str = "Running as fast as possible";
    if ( currDelay > 0 ) {
        QString extra;
        if ( fabs( currDelay/1000.0 - ga->getEvoRobotExperiment()->getWorldTimeStep() ) < 0.01 ) {
            extra = "Running approximately at real time";
        }
        str = QString("Speed: %1 frames/second [%2 ms]\n%3")
                    .arg(1000.0/currDelay)
                    .arg(currDelay)
                    .arg(extra);
    }
    simulationSpeed = new QLabel( str, widget );
    lay->addWidget( simulationSpeed, 5, 1 );
    lb = new QLabel( "fast", widget );
    lay->addWidget( lb, 6, 1 );
    
    return ParameterSettableUIViewer( widget, "Evoga Controls" );
}

void EvoRobotViewer::evogaNextTrial() {
    ga->getEvoRobotExperiment()->stopTrial();
}

void EvoRobotViewer::onSimulationThrottleChanges( int newvalue ) {
    // mapping with an exponential in order to get more sensitivity for small values
    int delay = ceil(std::exp( newvalue/13.0 )-1.0);
    ga->getEvoRobotExperiment()->setStepDelay( delay );
    if ( delay > 0 ) {
        QString extra;
        if ( fabs( delay/1000.0 - ga->getEvoRobotExperiment()->getWorldTimeStep() ) < 0.01 ) {
            extra = "Running approximately at real time";
        }
        simulationSpeed->setText( QString("Speed: %1 frames/second [%2 ms]\n%3")
                    .arg(1000.0/delay)
                    .arg(delay)
                    .arg(extra) );
    } else {
        simulationSpeed->setText( "Running as fast as possible" );
    }
}

ParameterSettableUIViewer EvoRobotViewer::fitview( QWidget* parent, Qt::WindowFlags flags )
{
    // Here we also create the fitness viewer
    ftv = new FitViewer(3,4000,parent,flags);
    ftv->setChunkProperties(0, "MaxFit", Qt::red, true);
    ftv->setChunkProperties(1, "AverageFit", Qt::green, true);
    ftv->setChunkProperties(2, "MinFit", Qt::blue, true);
    ftv->setLabels(QString("EvoICub Fitness Monitor"), QString("Generations"), QString("Fitness"));
    ftv->setGeometry(50, 50, 500, 500);
    ftv->setWindowTitle( "Fitness Curves" );
    connect( ga, SIGNAL(startingReplication(int)),
             this, SLOT(onEvogaStartingReplication(int)), Qt::QueuedConnection );
    connect( ga, SIGNAL(recoveredInterruptedEvolution(QString)),
             this, SLOT(onEvogaRecoveredInterruptedEvolution(QString)), Qt::QueuedConnection );
    connect( ga, SIGNAL(endGeneration(int,double,double,double)),
             this, SLOT(onEvogaEndGeneration(int,double,double,double)), Qt::QueuedConnection );
    return ParameterSettableUIViewer( ftv, "Fitness monitor" ); 
}

// ParameterSettableUIViewer EvoRobotViewer::icubview( QWidget* parent, Qt::WindowFlags flags )
// {
//  m_icubview = new VisionMapSensorGui(parent,flags);
//  m_icubview->setWindowTitle( "iCub Camera" );
//  m_icubview->resize( 200, 200 );
//  m_icubview->hide();
//  return ParameterSettableUIViewer( m_icubview, "iCub camera" );
// }

ParameterSettableUIViewer EvoRobotViewer::statview( QWidget* parent, Qt::WindowFlags flags )
{
    statViewer = new QWidget( parent, flags );
    statViewer->setWindowTitle( "Statictis Viewer" );
    QGridLayout* lay = new QGridLayout( statViewer );
    QPushButton* but = new QPushButton( "Load a Stat File", statViewer );
    connect( but, SIGNAL(clicked()), this, SLOT(loadStat()) );
    lay->addWidget( but, 0, 0 );
    but = new QPushButton( "Load All Stat", statViewer );
    connect( but, SIGNAL(clicked()), this, SLOT(loadAllStat()) );
    lay->addWidget( but, 0, 1 );
    return ParameterSettableUIViewer( statViewer, "Statistic Viewer" );
}

void EvoRobotViewer::loadStat() {
    QString filename = QFileDialog::getOpenFileName(statViewer, tr("Open Stat File"), ".", tr("Files with statistics (*.fit *.ini)"));
    if (filename.isEmpty()) {
        return;
    }
    FitViewer* fitViewer = statViewer->findChild<FitViewer*>( "statFitViewer" );
    if ( fitViewer ) {
        delete fitViewer;
    }
    fitViewer = new FitViewer(3, 4000, statViewer);
    fitViewer->setObjectName( "statFitViewer" );
    fitViewer->setLabels(QString("Stat monitor. File: ").append(filename), QString("Generation"), QString("Fitnes"));
    fitViewer->setChunkProperties(0, "MaxFit", Qt::red,true);
    fitViewer->setChunkProperties(1, "Average", Qt::green,true);
    fitViewer->setChunkProperties(2, "Minimum", Qt::blue,true);
    fitViewer->loadRawData(0, filename, 0);
    fitViewer->loadRawData(1, filename, 1);
    fitViewer->loadRawData(2, filename, 2);
    QGridLayout* lay = qobject_cast<QGridLayout*>( statViewer->layout() );
    lay->addWidget( fitViewer, 1, 0, 1, 2 );
    lay->setRowStretch( 1, 2 );
    fitViewer->show();
}

void EvoRobotViewer::loadAllStat()
{
    FitViewer* fitViewer = statViewer->findChild<FitViewer*>( "statFitViewer" );
    if ( fitViewer ) {
        delete fitViewer;
    }

    QDir currentDir;
    QFileInfoList statFiles = currentDir.entryInfoList( QStringList() << "*.fit", QDir::Files, QDir::Name );
    
    fitViewer = new FitViewer(statFiles.size(), ga->getNumOfGenerations(), statViewer);
    fitViewer->setObjectName( "statFitViewer" );
    QString title = QString("Stat monitor");
    fitViewer->setLabels(title, QString("Generation"), QString("Fitness"));

    QColor colors[10] = { QColor(Qt::red), QColor(Qt::green), QColor(Qt::blue), QColor(Qt::cyan),
                        QColor(Qt::magenta), QColor(Qt::darkYellow), QColor(Qt::gray), QColor(255, 140, 0, 255),
                        QColor(153, 50, 204, 255), QColor(Qt::black) };
    for(int i=0; i<statFiles.size(); i++ ) {
        QFileInfo statFile = statFiles[i];
        QColor col = colors[i%10];
        fitViewer->setChunkProperties( i, QString("Seed:").append(statFile.baseName().split("S").last()), col, true );
        fitViewer->loadRawData( i, statFile.fileName(), 0 );
    }
    fitViewer->sortchunks();
    QGridLayout* lay = qobject_cast<QGridLayout*>( statViewer->layout() );
    lay->addWidget( fitViewer, 1, 0, 1, 2 );
    lay->setRowStretch( 1, 2 );
    fitViewer->show();
}

ParameterSettableUIViewer EvoRobotViewer::testIndividualUI( TestIndividual* test, QWidget* parent, Qt::WindowFlags flags ) {
    TestIndividualGUI* testIndUI = new TestIndividualGUI( test, parent, flags );
    testIndUI->setWindowTitle( "Select the Individual to Test" );
    return ParameterSettableUIViewer( testIndUI, "Individual to Test", QString(), "From this view you can select an individual to test using the \"TestIndividual\" from the \"Tests\" menu" );
}

void EvoRobotViewer::onWorldAdvance() {
    ResourcesLocker locker(this);

    EvoRobotExperiment* exp = getResource<EvoRobotExperiment>("experiment");

    renderworldwrapper->updateRenderWorld();

    if ( exp->getActivityPhase() == EvoRobotExperiment::INTEST ) {
//      if (m_icubview != NULL)  {
//          m_icubview->setImage( exp->getResource<PhyiCub>( "robot" ) );   // update the iCub camera widget
//      }
    }
    // visualizza su EvoGa Controls informazioni su step e trial
    infoEvoga->setText( QString( "Step %1 of %2 --- Trial %3 of %4" )
                            .arg( exp->getCurStep(), 5 ).arg( exp->getNSteps() )
                            .arg( exp->getCurTrial(), 5 ).arg( exp->getNTrials() ) );
}

void EvoRobotViewer::onEvogaStartingReplication( int /*replication*/ ) {
    ftv->reset();
}

void EvoRobotViewer::onEvogaRecoveredInterruptedEvolution( QString statfile ) {
    ftv->loadRawData(0,statfile,0);
    ftv->loadRawData(1,statfile,1);
    ftv->loadRawData(2,statfile,2);
}

void EvoRobotViewer::onEvogaEndGeneration( int generation, double fmax, double faverage, double fmin ) {
    ftv->setChunkValue(0,generation,fmax);
    ftv->setChunkValue(1,generation,faverage);
    ftv->setChunkValue(2,generation,fmin);
    ftv->diplayUntilStep(generation);
    ftv->update();
}

void EvoRobotViewer::onActionFinished() {
    infoEvoga->setText( evorobot->status() );
}

namespace {
    // A custom QEvent to force update of RenderWorldWrapperWidget
    class ForceRenderWorldUpdateEvent : public QEvent
    {
    public:
        ForceRenderWorldUpdateEvent() :
            QEvent(QEvent::User)
        {
        }

        virtual ~ForceRenderWorldUpdateEvent()
        {
        }
    };
}

RenderWorldWrapperWidget::RenderWorldWrapperWidget(QWidget* parent, Qt::WindowFlags flags) :
    QWidget(parent, flags),
    ConcurrentResourcesUser(),
    m_renderWorld(new RenderWorld(this, "world")),
    m_layout(new QVBoxLayout(this)),
    m_renderWorldStateRestored(false),
    m_setCameraToLookAtRobot(false),
    m_robotTm(wMatrix::identity())
{
    // Setting some window property and creating the layout that will contain renderworld
    setWindowTitle("3D World");
    m_layout->setContentsMargins(0, 0, 0, 0);
    m_layout->addWidget(m_renderWorld);
    const QString stateFileName = ".evolver.xml";
    m_renderWorld->setStateFileName(stateFileName);
    if (QFile::exists(stateFileName)) {
        m_renderWorldStateRestored = true;
        m_renderWorld->restoreStateFromFile();
    }

    // Declaring which resources we will need to use
    usableResources(QStringList() << "robot");
}

RenderWorldWrapperWidget::~RenderWorldWrapperWidget()
{
    // Nothing to do here
}

void RenderWorldWrapperWidget::updateRenderWorld()
{
    if (m_setCameraToLookAtRobot) {
        lookAtRobot();

        m_setCameraToLookAtRobot = false;
        // Setting this to true so that the next time the robot changes we don't move camera
        m_renderWorldStateRestored = true;
    }

    m_renderWorld->update();
}

void RenderWorldWrapperWidget::shareResourcesWith(ResourcesUser* buddy)
{
    // First of all calling parent function
    ConcurrentResourcesUser::shareResourcesWith(buddy);

    // Now sharing with RenderWorld
    m_renderWorld->shareResourcesWith(buddy);
}

void RenderWorldWrapperWidget::resourceChanged(QString resourceName, ResourceChangeType changeType)
{
    if (resourceName == "robot") {
        if ((changeType != Deleted) && (!m_renderWorldStateRestored)) {
            try {
                m_robotTm = getResource<WObject>()->matrix();
            } catch (const ResourceTypeMismatchException&) {
            }

            m_setCameraToLookAtRobot = true;
        }
    } else {
        Logger::info("Unknown resource " + resourceName + " for RenderWorldWrapperWidget widget");
    }

    // Forcing renderworld update
    QCoreApplication::postEvent(this, new ForceRenderWorldUpdateEvent());
}

void RenderWorldWrapperWidget::customEvent(QEvent* event)
{
    if (event->type() == QEvent::User) {
        // Forcing RenderWorld update
        updateRenderWorld();
    }
}

void RenderWorldWrapperWidget::lookAtRobot()
{
    wVector cameraDefaultPosition = m_robotTm.transformVector(wVector(-0.8f, 0.0f, +0.6f));
    m_renderWorld->camera()->setPosition(Vec(cameraDefaultPosition[0], cameraDefaultPosition[1], cameraDefaultPosition[2]));
    m_renderWorld->camera()->setUpVector(Vec(0.0f, 0.0f, 1.0f));
    m_renderWorld->camera()->lookAt(Vec(m_robotTm.w_pos[0], m_robotTm.w_pos[1], m_robotTm.w_pos[2]));
}

// #include <QPainter>
// #include <QPen>
// #include <QBrush>
// #include <QTransform>
// #include <QVBoxLayout>
// 
// namespace VisionMapSensorGuiInternal {
//  /**
//   * \brief An helper class to display an image
//   *
//   * This takes a pointer to the image to show and also resizes itself to
//   * match the image dimension
//   */
//  class ImageDisplayer : public QWidget
//  {
//  public:
//      ImageDisplayer(QWidget* parent = NULL) :
//          QWidget(parent),
//          m_image(NULL)
//      {
//      }
// 
//      ~ImageDisplayer()
//      {
//      }
// 
//      void setImage(QImage* image)
//      {
//          // Saving image
//          m_image = image;
// 
//          // Also resetting widget dimensions
//          setMinimumSize(m_image->width(), m_image->height());
//          setMaximumSize(m_image->width(), m_image->height());
// 
//          // Updating the widget
//          update();
//      }
// 
//  private:
//      void paintEvent(QPaintEvent *)
//      {
//          if (m_image == NULL) {
//              return;
//          }
// 
//          QPainter painter(this);
// 
//          // Drawing image. Also flipping image (perhaps yarp doesn't consider top left to be 0, 0)
//          painter.drawImage(0, 0, m_image->mirrored(false, true));
//      }
// 
//      QImage* m_image;
//  };
// }
// 
// VisionMapSensorGui::VisionMapSensorGui(QWidget* parent, Qt::WindowFlags flags) :
//  QWidget(parent,flags),
//  m_image(),
//  m_imageDisplayer(new VisionMapSensorGuiInternal::ImageDisplayer(this))
// {
//  // Creating a layout and adding the image displayer widget and the table with map activations
//  QVBoxLayout* layout = new QVBoxLayout(this);
//  layout->addWidget(m_imageDisplayer);
// 
// 
// }
// 
// VisionMapSensorGui::~VisionMapSensorGui()
// {
//  // Nothing to do here
// }
// 
// void VisionMapSensorGui::setImage(PhyiCub *icub, bool useRightCamera)
// {
// 
//  // Taking the image in yarp format
//  yarp::sig::ImageOf<yarp::sig::PixelRgb> yarpImage;
//  // yarp::dev::IFrameGrabberImage* frameGrabber = useRightCamera ? icub->rightEyeFrameGrabber() :  icub->leftEyeFrameGrabber();
//  yarp::dev::IFrameGrabberImage* frameGrabber = NULL; // The line above crashes with multithread
//  if (frameGrabber == NULL) {
//      return;
//  }
//  // frameGrabber->getImage(yarpImage); // Crashes with multithread
// 
//  // Converting to QImage
//  m_image = QImage(yarpImage.width(), yarpImage.height(), QImage::Format_RGB32);
//  for (int i = 0; i < yarpImage.width(); i++) {
//      for (int j = 0; j < yarpImage.height(); j++) {
//          // Converting pixel and writing it into the QImage
//          yarp::sig::PixelRgb& yarpPixel = yarpImage.pixel(i, j);
//          m_image.setPixel(i, j, qRgb(yarpPixel.r, yarpPixel.g, yarpPixel.b));
//      }
//  }
// 
// 
//  // Drawing an X at the image center
//  QPainter painter(&m_image);
//  const int cX = m_image.width() / 2;
//  const int cY = m_image.height() / 2;
// 
//  // Drawing the X
//  painter.setPen(QPen(Qt::white, 3));
//  painter.drawLine(cX - 5, cY - 5, cX + 5, cY + 5);
//  painter.drawLine(cX + 5, cY - 5, cX - 5, cY + 5);
//  painter.setPen(QPen(Qt::black, 1));
//  painter.drawLine(cX - 5, cY - 5, cX + 5, cY + 5);
//  painter.drawLine(cX + 5, cY - 5, cX - 5, cY + 5);
// 
//  // Setting the image for the image displayer
//  m_imageDisplayer->setImage(&m_image);
//  m_imageDisplayer->update();
// }
// 
// void VisionMapSensorGui::addMark(double x, double y, QColor markCenter, QColor markSurrounding)
// {
//  // Drawing a mark directly on the image
//  QPainter painter(&m_image);
// 
//  // Computing the mark position in image coordinates
//  const int imageX = int(x * double(m_image.width()));
//  const int imageY = int(y * double(m_image.height()));
// 
//  // Drawing the mark
//  painter.setPen(QPen(markSurrounding, 5));
//  painter.drawPoint(imageX, imageY);
//  painter.setPen(QPen(markCenter, 3));
//  painter.drawPoint(imageX, imageY);
// 
//  // Updating the image displayer widget
//  m_imageDisplayer->update();
// }

TestIndividualGUI::TestIndividualGUI(TestIndividual* tb, QWidget *parent, Qt::WindowFlags flags) :
    QWidget(parent, flags)
{
    test = tb;

    //set layout
    QGridLayout* mainLay = new QGridLayout( this );

    // buttons
    QPushButton* bt = new QPushButton( "Refresh", this );
    connect( bt, SIGNAL(clicked()), this, SLOT(populateCombo()) );
    mainLay->addWidget(bt, 0, 0, 1, 2);
    //creating comboBox and list
    combo = new QComboBox();
    list = new QListWidget();
    mainLay->addWidget(new QLabel("Select File to load:"), 1, 0);
    mainLay->addWidget(combo, 1, 1);
    mainLay->addWidget(list, 2, 0, 1, 2);

    //checking available best and gen files
    populateCombo();

    // Connecting signals and slots
    connect(combo, SIGNAL(activated(QString)), this, SLOT(seedWasChosen()));
    connect(list, SIGNAL(itemDoubleClicked(QListWidgetItem*)), this, SLOT(agentClicked()));
}

void TestIndividualGUI::populateCombo()
{
    combo->clear();
    list->clear();
    //ask abstractGA the template name for the files (i.e. "*P*S*G*.gen")
    QString bestF = test->component()->getGA()->bestsFilename();
    QString genF = test->component()->getGA()->generationFilename();

    //search current folder for files
    QDir* dir = new QDir();
    QStringList expression = (QStringList() << bestF << genF);
    fileList = dir->entryList(expression);

    //insert their name into the combo boxes
    combo->addItems(fileList);
}

void TestIndividualGUI::seedWasChosen()
{
    //load the chosen file
    test->setPopulationToTest( combo->currentText(), false );
    //refresh individuals list on the GUI
    list->clear();
    int loadindi = test->component()->getGA()->numLoadedGenotypes();
    for(int i=1; i<=loadindi; i++)
    {
        list->addItem(QString::number(i));
    }
}

void TestIndividualGUI::agentClicked()
{
    //take index of the chosen individual
    test->setIndividualToTest( list->currentRow() );
}

} //end namespace farsa

// All the suff below is to restore the warning state on Windows
#if defined(_MSC_VER)
    #pragma warning(pop)
#endif