Basic, unfinished & broken impl

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>

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);
+}

launcher/ui/dialogs/InstallLoaderDialog.h

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QDialog>
+#include "ui/pages/BasePageProvider.h"
+
+class MinecraftInstance;
+class PageContainer;
+class PackProfile;
+
+class InstallLoaderDialog : public QDialog, public BasePageProvider {
+    Q_OBJECT
+
+   public:
+    explicit InstallLoaderDialog(std::shared_ptr<PackProfile> instance, QWidget* parent = nullptr);
+
+    QList<BasePage*> getPages() override;
+    QString dialogTitle() override;
+
+    void done(int result) override;
+
+   private:
+    std::shared_ptr<PackProfile> m_profile;
+    PageContainer* m_container;
+};

launcher/ui/dialogs/ResourceDownloadDialog.cpp

@@ -148,15 +148,17 @@ bool ResourceDownloadDialog::selectPage(QString pageId)
     return m_container->selectPage(pageId);
 }
 
-ResourcePage* ResourceDownloadDialog::getSelectedPage()
+ResourcePage* ResourceDownloadDialog::selectedPage()
 {
-    return m_selectedPage;
+    ResourcePage* result = dynamic_cast<ResourcePage*>(m_container->selectedPage());
+    Q_ASSERT(result != nullptr);
+    return result;
 }
 
 void ResourceDownloadDialog::addResource(ModPlatform::IndexedPack::Ptr pack, ModPlatform::IndexedVersion& ver)
 {
     removeResource(pack->name);
-    m_selectedPage->addResourceToPage(pack, ver, getBaseModel());
+    selectedPage()->addResourceToPage(pack, ver, getBaseModel());
     setButtonStatus();
 }
 
@@ -196,14 +198,8 @@ void ResourceDownloadDialog::selectedPageChanged(BasePage* previous, BasePage* s
         return;
     }
 
-    m_selectedPage = dynamic_cast<ResourcePage*>(selected);
-    if (!m_selectedPage) {
-        qCritical() << "Page '" << selected->displayName() << "' in ResourceDownloadDialog is not a ResourcePage!";
-        return;
-    }
-
     // Same effect as having a global search bar
-    m_selectedPage->setSearchTerm(prev_page->getSearchTerm());
+    selectedPage()->setSearchTerm(prev_page->getSearchTerm());
 }
 
 ModDownloadDialog::ModDownloadDialog(QWidget* parent, const std::shared_ptr<ModFolderModel>& mods, BaseInstance* instance)
@@ -226,8 +222,6 @@ QList<BasePage*> ModDownloadDialog::getPages()
     if (APPLICATION->capabilities() & Application::SupportsFlame)
         pages.append(FlameModPage::create(this, *m_instance));
 
-    m_selectedPage = dynamic_cast<ModPage*>(pages[0]);
-
     return pages;
 }
 
@@ -253,8 +247,6 @@ QList<BasePage*> ResourcePackDownloadDialog::getPages()
     if (APPLICATION->capabilities() & Application::SupportsFlame)
         pages.append(FlameResourcePackPage::create(this, *m_instance));
 
-    m_selectedPage = dynamic_cast<ResourcePackResourcePage*>(pages[0]);
-
     return pages;
 }
 
@@ -280,8 +272,6 @@ QList<BasePage*> TexturePackDownloadDialog::getPages()
     if (APPLICATION->capabilities() & Application::SupportsFlame)
         pages.append(FlameTexturePackPage::create(this, *m_instance));
 
-    m_selectedPage = dynamic_cast<TexturePackResourcePage*>(pages[0]);
-
     return pages;
 }
 
@@ -302,11 +292,7 @@ ShaderPackDownloadDialog::ShaderPackDownloadDialog(QWidget* parent,
 QList<BasePage*> ShaderPackDownloadDialog::getPages()
 {
     QList<BasePage*> pages;
-
     pages.append(ModrinthShaderPackPage::create(this, *m_instance));
-
-    m_selectedPage = dynamic_cast<ShaderPackResourcePage*>(pages[0]);
-
     return pages;
 }
 

launcher/ui/dialogs/ResourceDownloadDialog.h

@@ -60,7 +60,7 @@ class ResourceDownloadDialog : public QDialog, public BasePageProvider {
     QString dialogTitle() override { return tr("Download %1").arg(resourcesString()); };
 
     bool selectPage(QString pageId);
-    ResourcePage* getSelectedPage();
+    ResourcePage* selectedPage();
 
     void addResource(ModPlatform::IndexedPack::Ptr, ModPlatform::IndexedVersion&);
     void removeResource(const QString&);
@@ -85,7 +85,6 @@ class ResourceDownloadDialog : public QDialog, public BasePageProvider {
     const std::shared_ptr<ResourceFolderModel> m_base_model;
 
     PageContainer* m_container = nullptr;
-    ResourcePage* m_selectedPage = nullptr;
 
     QDialogButtonBox m_buttons;
     QVBoxLayout m_vertical_layout;