Method changeActiveAccount

launcher/ui/MainWindow.cpp:704–721

* Assumes the sender is a QAction */

 * Assumes the sender is a QAction
 */
void MainWindow::changeActiveAccount()
{
    QAction* sAction = (QAction*)sender();

    // Profile's associated Mojang username
    if (sAction->data().type() != QVariant::Type::Int)
        return;

    QVariant action_data = sAction->data();
    bool valid = false;
    int index = action_data.toInt(&valid);
    if (!valid) {
        index = -1;
    }
    auto accounts = APPLICATION->accounts();
    accounts->setDefaultAccount(index == -1 ? nullptr : accounts->at(index));
    defaultAccountChanged();
}

void MainWindow::defaultAccountChanged()
{