From 6ce966fbb12f4f3934aa14c78489671d6fd186fb Mon Sep 17 00:00:00 2001
From: Ben Boeckel <MathStuf@gmail.com>
Date: Sun, 3 May 2009 01:29:46 -0400
Subject: Make a root item if asked for

---
 sigmodr/tree/TreeModel.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'sigmodr/tree/TreeModel.cpp')

diff --git a/sigmodr/tree/TreeModel.cpp b/sigmodr/tree/TreeModel.cpp
index 15f8dae2..82dd7ec8 100644
--- a/sigmodr/tree/TreeModel.cpp
+++ b/sigmodr/tree/TreeModel.cpp
@@ -50,7 +50,11 @@ QVariant TreeModel::data(const QModelIndex& index, const int role) const
 QModelIndex TreeModel::index(const int row, const int column, const QModelIndex& parent) const
 {
     if (!parent.isValid())
+    {
+        if ((row == -1) || (column == -1))
+            return createIndex(0, 0, m_root);
         return QModelIndex();
+    }
     TreeItem* item = static_cast<TreeItem*>(parent.internalPointer());
     if (column || (row < 0) || (item->childCount() <= row))
         return QModelIndex();
-- 
cgit