Method tryNextMajorJava

launcher/minecraft/launch/AutoInstallJava.cpp:206–242

}

void AutoInstallJava::tryNextMajorJava()
{
    if (!isRunning())
        return;
    auto versionList = APPLICATION->metadataIndex()->get("net.minecraft.java");
    auto packProfile = m_instance->getPackProfile();
    auto wantedJavaName = packProfile->getProfile()->getCompatibleJavaName();
    auto majorJavaVersions = packProfile->getProfile()->getCompatibleJavaMajors();
    if (m_majorJavaVersionIndex >= majorJavaVersions.length()) {
        emit logLine(
            tr("No versions of Java were found for your operating system: %1-%2").arg(SysInfo::currentSystem(), SysInfo::useQTForArch()),
            MessageLevel::Warning);
        emit logLine(tr("No compatible version of Java was found. Using the default one."), MessageLevel::Warning);
        emitSucceeded();
        return;
    }
    auto majorJavaVersion = majorJavaVersions[m_majorJavaVersionIndex];
    m_majorJavaVersionIndex++;

    auto javaMajor = versionList->getVersion(QString("java%1").arg(majorJavaVersion));

    if (javaMajor->isLoaded()) {
        downloadJava(javaMajor, wantedJavaName);
    } else {
        m_current_task = APPLICATION->metadataIndex()->loadVersion("net.minecraft.java", javaMajor->version(), Net::Mode::Online);
        connect(m_current_task.get(), &Task::succeeded, this,
                [this, javaMajor, wantedJavaName] { downloadJava(javaMajor, wantedJavaName); });
        connect(m_current_task.get(), &Task::failed, this, &AutoInstallJava::tryNextMajorJava);
        connect(m_current_task.get(), &Task::progress, this, &AutoInstallJava::setProgress);
        connect(m_current_task.get(), &Task::stepProgress, this, &AutoInstallJava::propagateStepProgress);
        connect(m_current_task.get(), &Task::status, this, &AutoInstallJava::setStatus);
        connect(m_current_task.get(), &Task::details, this, &AutoInstallJava::setDetails);
        if (!m_current_task->isRunning()) {
            m_current_task->start();
        }
    }
}
bool AutoInstallJava::abort()
{
    if (m_current_task && m_current_task->canAbort()) {