From 3b574d7c3e3229365cec0acb0cbbf4c328fcf8b3 Mon Sep 17 00:00:00 2001
From: Goombert <robertbcolton@gmail.com>
Date: Fri, 31 Jul 2020 18:40:52 -0400
Subject: [PATCH] use full path comparison for drag and drop

---
 Models/TreeModel.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Models/TreeModel.cpp b/Models/TreeModel.cpp
index debbc198c..dd1fb11e4 100644
--- a/Models/TreeModel.cpp
+++ b/Models/TreeModel.cpp
@@ -174,7 +174,14 @@ QMimeData *TreeModel::mimeData(const QModelIndexList &indexes) const {
 
   // rows are moved starting with the lowest so we can create
   // unique names in the order of insertion
-  std::sort(nodes.begin(), nodes.end(), std::less<QModelIndex>());
+  using pathComparator = std::function<bool(const QModelIndex & a, const QModelIndex & b)>;
+  pathComparator compareIndexes =
+    [&compareIndexes](const QModelIndex & a, const QModelIndex & b) -> bool {
+      if (a.parent() == b.parent())
+        return a < b;
+      return compareIndexes(a.parent(),b.parent());
+    };
+  std::sort(nodes.begin(), nodes.end(), compareIndexes);
 
   stream << QCoreApplication::applicationPid();
   stream << nodes.count();