From bf28c2e3f43038165dc83c10267d103e779b245e Mon Sep 17 00:00:00 2001
From: Christian Mollekopf <chrigi_1@fastmail.fm>
Date: Mon, 30 Nov 2015 13:45:51 +0100
Subject: ModelResult: return an invalid QModelIndex for the toplevel parent

---
 common/modelresult.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/modelresult.cpp b/common/modelresult.cpp
index 4def20f..e2a05f8 100644
--- a/common/modelresult.cpp
+++ b/common/modelresult.cpp
@@ -100,6 +100,9 @@ QModelIndex ModelResult<T, Ptr>::index(int row, int column, const QModelIndex &p
 template<class T, class Ptr>
 QModelIndex ModelResult<T, Ptr>::createIndexFromId(const qint64 &id) const
 {
+    if (id == 0) {
+        return QModelIndex();
+    }
     auto grandParentId = mParents.value(id, 0);
     auto row = mTree.value(grandParentId).indexOf(id);
     return createIndex(row, 0, id);
-- 
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