From 7858412419b621b87c9df5cfd135a63d469dc498 Mon Sep 17 00:00:00 2001
From: "Veronica K. B. Olsen" <1619840+vkbo@users.noreply.github.com>
Date: Sun, 9 Feb 2020 21:25:20 +0100
Subject: [PATCH] Added check to make sure items are not dropped on the
 oprhaned folder

---
 nw/gui/elements/doctree.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/nw/gui/elements/doctree.py b/nw/gui/elements/doctree.py
index 28222af9..ae7aef17 100644
--- a/nw/gui/elements/doctree.py
+++ b/nw/gui/elements/doctree.py
@@ -613,16 +613,22 @@ class GuiDocTree(QTreeWidget):
         """
         sHandle = self.getSelectedHandle()
         if sHandle is None:
+            logger.error("No handle selected")
             return
 
-        dIndex  = self.indexAt(theEvent.pos())
+        dIndex = self.indexAt(theEvent.pos())
         if not dIndex.isValid():
+            logger.error("Invalid drop index")
             return
 
         dItem   = self.itemFromIndex(dIndex)
         dHandle = dItem.text(self.C_HANDLE)
         snItem  = self.theProject.getItem(sHandle)
         dnItem  = self.theProject.getItem(dHandle)
+        if dnItem is None:
+            self.makeAlert("The item cannot be moved to that location.", nwAlert.ERROR)
+            return
+
         isSame  = snItem.itemClass == dnItem.itemClass
         isNone  = snItem.itemClass == nwItemClass.NO_CLASS
         isNote  = snItem.itemLayout == nwItemLayout.NOTE