as

void CircuitsView::manageButton()
{
    int tlIndex = m_transmissionLines->currentIndex();
    TransmissionLine *tl = g_project->getTransmissionLine(tlIndex);
    if(!tl)
        return;

    QDialog manageWindow;
    QGridLayout *layout = new QGridLayout;
    TableWidget *listWidget = new TableWidget(tl->getCircuits().size(), 1);
    QPushButton *addButton = new QPushButton("Add");
    QPushButton *copyButton = new QPushButton("Copy");
    QPushButton *removeButton = new QPushButton("Remove");

    manageWindow.setLayout(layout);

    listWidget->setDragEnabled(true);
    listWidget->setDisplayMenu(false);
    listWidget->horizontalHeader()->hide();
    listWidget->horizontalHeader()->resizeSections(QHeaderView::Stretch);
    listWidget->setSelectionMode(listWidget->SingleSelection);
    listWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);

    layout->addWidget(listWidget, 0, 0, 1 ,3);
    layout->addWidget(addButton, 1, 0);
    layout->addWidget(copyButton, 1, 1);
    layout->addWidget(removeButton, 1, 2);

    connect(listWidget, &TableWidget::sectionLogicalMoved, [this, listWidget, tl](int fromIndex, int toIndex) {
        tl->chanceCircuitIndex(fromIndex, toIndex);
    });

    connect(addButton, &QPushButton::clicked, [this, listWidget]() {
        int tlIndex = m_transmissionLines->currentIndex();
        TransmissionLine *tl = g_project->getTransmissionLine(tlIndex);
        if(!tl)
            return;

        int circuitIndex = listWidget->rowCount();
        tl->addCircuit(circuitIndex, false);

        updateFromProject(tlIndex, circuitIndex+1);
        nameUpdate();

        listWidget->setRowCount(tl->getCircuits().size());
        listWidget->setItem(circuitIndex + 1, 0, new QTableWidgetItem(tl->getCircuit(circuitIndex)->getName()));
    });

    connect(copyButton, &QPushButton::clicked, [this, listWidget]() {
        int circuitIndex = 0;
        if(listWidget->selectedItems().size() == 0) {
            QMessageBox::critical(nullptr, tr("Error"), tr("Please select a item to copy"));
            return;
        } else
            circuitIndex = listWidget->selectedItems().at(0)->row();

        int tlIndex = m_transmissionLines->currentIndex();
        TransmissionLine *tl = g_project->getTransmissionLine(tlIndex);
        if(!tl)
            return;

        tl->addCircuit(circuitIndex, true);

        updateFromProject(tlIndex, circuitIndex+1);
        nameUpdate();

        listWidget->setRowCount(tl->getCircuits().size());
        listWidget->setItem(circuitIndex, 0, new QTableWidgetItem(tl->getCircuit(circuitIndex +1)->getName()));
    });

    connect(removeButton, &QPushButton::clicked, [this, listWidget]() {
        QMessageBox::StandardButton reply;
        reply = QMessageBox::question(this, "", tr("Are you sure do you want to remove this circuit?"),
                                      QMessageBox::Yes|QMessageBox::No);
        if(reply == QMessageBox::No)
            return;

        int circuitIndex = 0;
        if(listWidget->selectedItems().size() == 0) {
            QMessageBox::critical(nullptr, tr("Error"), tr("Please select a item to remove"));
            return;
        } else
            circuitIndex = listWidget->selectedItems().at(0)->row();

        int tlIndex = m_transmissionLines->currentIndex();
        TransmissionLine *tl = g_project->getTransmissionLine(tlIndex);
        if(!tl)
            return;

        QString error;
        if(!tl->removeCircuit(circuitIndex, error))
            QMessageBox::critical(nullptr, tr("Error"), error);

        int count = m_circuits->count();
        if(circuitIndex >= count-1)
            --circuitIndex;

        updateFromProject(tlIndex, circuitIndex);
        listWidget->removeRow(circuitIndex);
    });

    for(int i = 0; i < tl->getCircuits().size(); i++) {
        listWidget->setItem(i, 0, new QTableWidgetItem(tl->getCircuit(i)->getName()));
    }

    manageWindow.exec();
}