1 files changed, 121 insertions, 0 deletions
diff --git a/launcher/ui/dialogs/InstallLoaderDialog.cpp b/launcher/ui/dialogs/InstallLoaderDialog.cpp
new file mode 100644
index 00000000..34c91c68
--- /dev/null
+++ b/launcher/ui/dialogs/InstallLoaderDialog.cpp
@@ -0,0 +1,121 @@
+#include "InstallLoaderDialog.h"
+
+#include <QDialogButtonBox>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include "Application.h"
+#include "BuildConfig.h"
+#include "DesktopServices.h"
+#include "meta/Index.h"
+#include "minecraft/MinecraftInstance.h"
+#include "minecraft/PackProfile.h"
+#include "ui/widgets/PageContainer.h"
+#include "ui/widgets/VersionSelectWidget.h"
+
+class LoaderPage : public VersionSelectWidget, public BasePage {
+   public:
+    LoaderPage(const QString&& id,
+               const QString&& icon,
+               const QString&& name,
+               // "lightweight" loaders are independent to any game version
+               const bool lightweight,
+               const std::shared_ptr<PackProfile> profile,
+               QWidget* parent = nullptr)
+        : VersionSelectWidget(parent), m_id(std::move(id)), m_icon(std::move(icon)), m_name(std::move(name))
+    {
+        const QString minecraftVersion = profile->getComponentVersion("net.minecraft");
+        setEmptyErrorString(tr("No versions are currently available for Minecraft %1").arg(minecraftVersion));
+        if (!lightweight)
+            setExactFilter(BaseVersionList::ParentVersionRole, minecraftVersion);
+
+        if (const QString currentVersion = profile->getComponentVersion(id); !currentVersion.isNull())
+            setCurrentVersion(currentVersion);
+    }
+
+    QString id() const override { return m_id; }
+    QString displayName() const override { return m_name; }
+    QIcon icon() const override { return APPLICATION->getThemedIcon(m_icon); }
+
+    void openedImpl() override
+    {
+        if (m_loaded)
+            return;
+
+        const auto versions = APPLICATION->metadataIndex()->get(m_id);
+        if (!versions)
+            return;
+
+        initialize(versions.get());
+        m_loaded = true;
+    }
+
+   private:
+    const QString m_id;
+    const QString m_icon;
+    const QString m_name;
+    bool m_loaded = false;
+};
+
+InstallLoaderDialog::InstallLoaderDialog(std::shared_ptr<PackProfile> profile, QWidget* parent)
+    : QDialog(parent), m_profile(profile), m_container(new PageContainer(this))
+{
+    auto layout = new QVBoxLayout(this);
+
+    m_container->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
+    layout->addWidget(m_container);
+
+    auto buttonLayout = new QHBoxLayout(this);
+
+    auto refreshButton = new QPushButton(tr("&Refresh"), this);
+    connect(refreshButton, &QPushButton::pressed, this, [this] {
+        LoaderPage* page = dynamic_cast<LoaderPage*>(m_container->selectedPage());
+        Q_ASSERT(page != nullptr);
+        page->loadList();
+    });
+    buttonLayout->addWidget(refreshButton);
+
+    auto buttons = new QDialogButtonBox(this);
+    buttons->setOrientation(Qt::Horizontal);
+    buttons->setStandardButtons(QDialogButtonBox::Cancel | QDialogButtonBox::Ok);
+    connect(buttons, &QDialogButtonBox::accepted, this, &QDialog::accept);
+    connect(buttons, &QDialogButtonBox::rejected, this, &QDialog::reject);
+    buttonLayout->addWidget(buttons);
+
+    layout->addLayout(buttonLayout);
+
+    setWindowTitle(dialogTitle());
+    resize(650, 400);
+}
+
+QList<BasePage*> InstallLoaderDialog::getPages()
+{
+    return { // Fabric
+             new LoaderPage("net.fabricmc.fabric-loader", "fabric-loader", tr("Fabric"), true, m_profile, this),
+             // Quilt
+             new LoaderPage("org.quiltmc.quilt-loader", "quilt-loader", tr("Quilt"), true, m_profile, this),
+             // Forge
+             new LoaderPage("net.minecraftforge", "forge-loader", tr("Forge"), false, m_profile, this),
+             // LiteLoader
+             new LoaderPage("com.mumfrey.liteloader", "liteloader", tr("LiteLoader"), false, m_profile, this)
+    };
+}
+
+QString InstallLoaderDialog::dialogTitle()
+{
+    return tr("Install Loader");
+}
+
+void InstallLoaderDialog::done(int result)
+{
+    if (result == Accepted) {
+        LoaderPage* page = dynamic_cast<LoaderPage*>(m_container->selectedPage());
+        Q_ASSERT(page != nullptr);
+
+        if (page->selectedVersion()) {
+            m_profile->setComponentVersion(page->id(), page->selectedVersion()->descriptor());
+            m_profile->resolve(Net::Mode::Online);
+        }
+    }
+
+    QDialog::done(result);
+}