From 4b3bee64006ab3d3e033714238208d0d64d61e96 Mon Sep 17 00:00:00 2001
From: Felix Geyer <debfx@fobos.de>
Date: Sun, 7 Apr 2013 11:50:42 +0200
Subject: [PATCH] Add extra checks so we never return empty QMimeData from
 mimeData().

---
 src/gui/entry/EntryModel.cpp | 10 ++++++++--
 src/gui/group/GroupModel.cpp | 10 ++++++++--
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/gui/entry/EntryModel.cpp b/src/gui/entry/EntryModel.cpp
index 29e6637ba..890b6cafb 100644
--- a/src/gui/entry/EntryModel.cpp
+++ b/src/gui/entry/EntryModel.cpp
@@ -227,8 +227,14 @@ QMimeData* EntryModel::mimeData(const QModelIndexList& indexes) const
         }
     }
 
-    data->setData(mimeTypes().first(), encoded);
-    return data;
+    if (seenEntries.isEmpty()) {
+        delete data;
+        return Q_NULLPTR;
+    }
+    else {
+        data->setData(mimeTypes().first(), encoded);
+        return data;
+    }
 }
 
 void EntryModel::entryAboutToAdd(Entry* entry)
diff --git a/src/gui/group/GroupModel.cpp b/src/gui/group/GroupModel.cpp
index 6c789a86a..d1bad58a9 100644
--- a/src/gui/group/GroupModel.cpp
+++ b/src/gui/group/GroupModel.cpp
@@ -313,8 +313,14 @@ QMimeData* GroupModel::mimeData(const QModelIndexList& indexes) const
         }
     }
 
-    data->setData(mimeTypes().first(), encoded);
-    return data;
+    if (seenGroups.isEmpty()) {
+        delete data;
+        return Q_NULLPTR;
+    }
+    else {
+        data->setData(mimeTypes().first(), encoded);
+        return data;
+    }
 }
 
 void GroupModel::groupDataChanged(Group* group)