NOISSUE Support custom,latest,recommended loader versions for ATL

This provides support for modpacks using the new loader mechanism in
ATLauncher and using a non-specific version target.

application/pages/modplatform/atlauncher/AtlPage.cpp

@@ -4,6 +4,7 @@
 #include "dialogs/NewInstanceDialog.h"
 #include <modplatform/atlauncher/ATLPackInstallTask.h>
 #include <BuildConfig.h>
+#include <dialogs/VersionSelectDialog.h>
 
 AtlPage::AtlPage(NewInstanceDialog* dialog, QWidget *parent)
         : QWidget(parent), ui(new Ui::AtlPage), dialog(dialog)
@@ -50,7 +51,7 @@ void AtlPage::openedImpl()
 void AtlPage::suggestCurrent()
 {
     if(isOpened) {
-        dialog->setSuggestedPack(selected.name, new ATLauncher::PackInstallTask(selected.safeName, selectedVersion));
+        dialog->setSuggestedPack(selected.name, new ATLauncher::PackInstallTask(this, selected.safeName, selectedVersion));
     }
 
     auto editedLogoName = selected.safeName;
@@ -112,3 +113,39 @@ void AtlPage::onVersionSelectionChanged(QString data)
     selectedVersion = data;
     suggestCurrent();
 }
+
+QString AtlPage::chooseVersion(Meta::VersionListPtr vlist, QString minecraftVersion) {
+    VersionSelectDialog vselect(vlist.get(), "Choose Version", MMC->activeWindow(), false);
+    if (minecraftVersion != Q_NULLPTR) {
+        vselect.setExactFilter(BaseVersionList::ParentVersionRole, minecraftVersion);
+        vselect.setEmptyString(tr("No versions are currently available for Minecraft %1").arg(minecraftVersion));
+    }
+    else {
+        vselect.setEmptyString(tr("No versions are currently available"));
+    }
+    vselect.setEmptyErrorString(tr("Couldn't load or download the version lists!"));
+
+    // select recommended build
+    for (int i = 0; i < vlist->versions().size(); i++) {
+        auto version = vlist->versions().at(i);
+        auto reqs = version->requires();
+
+        // filter by minecraft version, if the loader depends on a certain version.
+        if (minecraftVersion != Q_NULLPTR) {
+            auto iter = std::find_if(reqs.begin(), reqs.end(), [](const Meta::Require &req) {
+                return req.uid == "net.minecraft";
+            });
+            if (iter == reqs.end()) continue;
+            if (iter->equalsVersion != minecraftVersion) continue;
+        }
+
+        // first recommended build we find, we use.
+        if (version->isRecommended()) {
+            vselect.setCurrentVersion(version->descriptor());
+            break;
+        }
+    }
+
+    vselect.exec();
+    return vselect.selectedVersion()->descriptor();
+}

application/pages/modplatform/atlauncher/AtlPage.h

@@ -19,6 +19,7 @@
 #include "AtlListModel.h"
 
 #include <QWidget>
+#include <modplatform/atlauncher/ATLPackInstallTask.h>
 
 #include "MultiMC.h"
 #include "pages/BasePage.h"
@@ -31,7 +32,7 @@ namespace Ui
 
 class NewInstanceDialog;
 
-class AtlPage : public QWidget, public BasePage
+class AtlPage : public QWidget, public BasePage, public ATLauncher::UserInteractionSupport
 {
 Q_OBJECT
 
@@ -61,6 +62,8 @@ public:
 private:
     void suggestCurrent();
 
+    QString chooseVersion(Meta::VersionListPtr vlist, QString minecraftVersion) override;
+
 private slots:
     void triggerSearch();
     void resetSearch();