NOISSUE Flatten gui and logic libraries into MultiMC

launcher/InstanceProxyModel.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "groupview/GroupedProxyModel.h"
+
+/**
+ * A proxy model that is responsible for sorting instances into groups
+ */
+class InstanceProxyModel : public GroupedProxyModel
+{
+public:
+    explicit InstanceProxyModel(QObject *parent = 0);
+    QVariant data(const QModelIndex & index, int role) const override;
+
+protected:
+    virtual bool subSortLessThan(const QModelIndex &left, const QModelIndex &right) const override;
+};