Function getInstanceName

src/instancemanagerdialog.cpp:73–145

pops up a dialog to ask for an instance name when renaming

// pops up a dialog to ask for an instance name when renaming
//
QString getInstanceName(QWidget* parent, const QString& title, const QString& moreText,
                        const QString& label, const QString& oldName = {})
{
  auto& m = InstanceManager::singleton();

  QDialog dlg(parent);
  dlg.setWindowTitle(title);

  auto* ly = new QVBoxLayout(&dlg);

  auto* bb = new QDialogButtonBox(QDialogButtonBox::Cancel | QDialogButtonBox::Ok);

  auto* text = new QLineEdit(oldName);
  text->selectAll();

  auto* error = new QLabel;

  if (!moreText.isEmpty()) {
    auto* lb = new QLabel(moreText);
    lb->setWordWrap(true);
    ly->addWidget(lb);
    ly->addSpacing(10);
  }

  auto* lb = new QLabel(label);
  lb->setWordWrap(true);
  ly->addWidget(lb);

  ly->addWidget(text);
  ly->addWidget(error);
  ly->addStretch();
  ly->addWidget(bb);

  auto check = [&] {
    bool okay = false;

    if (text->text().isEmpty()) {
      error->setText("");
    } else if (!MOBase::validFileName(text->text())) {
      error->setText(QObject::tr("The instance name must be a valid folder name."));
    } else {
      const auto name = MOBase::sanitizeFileName(text->text());

      if ((name != oldName) && m.instanceExists(text->text())) {
        error->setText(QObject::tr("An instance with this name already exists."));
      } else {
        okay = true;
      }
    }

    error->setVisible(!okay);
    bb->button(QDialogButtonBox::Ok)->setEnabled(okay);
  };

  QObject::connect(text, &QLineEdit::textChanged, [&] {
    check();
  });
  QObject::connect(bb, &QDialogButtonBox::accepted, [&] {