Method changeModVersion

launcher/ui/pages/instance/ModFolderPage.cpp:404–453

}

void ModFolderPage::changeModVersion()
{
    if (m_instance->typeName() != "Minecraft")
        return;  // this is a null instance or a legacy instance

    auto profile = static_cast<MinecraftInstance*>(m_instance)->getPackProfile();
    if (!profile->getModLoaders().has_value()) {
        QMessageBox::critical(this, tr("Error"), tr("Please install a mod loader first!"));
        return;
    }
    if (APPLICATION->settings()->get("ModMetadataDisabled").toBool()) {
        QMessageBox::critical(this, tr("Error"), tr("Mod updates are unavailable when metadata is disabled!"));
        return;
    }
    auto selection = m_filterModel->mapSelectionToSource(ui->treeView->selectionModel()->selection()).indexes();
    auto mods_list = m_model->selectedMods(selection);
    if (mods_list.length() != 1 || mods_list[0]->metadata() == nullptr)
        return;

    ResourceDownload::ModDownloadDialog mdownload(this, m_model, m_instance);
    mdownload.setModMetadata((*mods_list.begin())->metadata());
    if (mdownload.exec()) {
        auto tasks = new ConcurrentTask("Download Mods", APPLICATION->settings()->get("NumberOfConcurrentDownloads").toInt());
        connect(tasks, &Task::failed, [this, tasks](QString reason) {
            CustomMessageBox::selectable(this, tr("Error"), reason, QMessageBox::Critical)->show();
            tasks->deleteLater();
        });
        connect(tasks, &Task::aborted, [this, tasks]() {
            CustomMessageBox::selectable(this, tr("Aborted"), tr("Download stopped by user."), QMessageBox::Information)->show();
            tasks->deleteLater();
        });
        connect(tasks, &Task::succeeded, [this, tasks]() {
            QStringList warnings = tasks->warnings();
            if (warnings.count())
                CustomMessageBox::selectable(this, tr("Warnings"), warnings.join('\n'), QMessageBox::Warning)->show();

            tasks->deleteLater();
        });

        for (auto& task : mdownload.getTasks()) {
            tasks->addTask(task);
        }

        ProgressDialog loadDialog(this);
        loadDialog.setSkipButton(true, tr("Abort"));
        loadDialog.execWithTask(tasks);

        m_model->update();
    }
}

void ModFolderPage::exportModMetadata()
{