From cef36248ee5dc05cfdee3a2ec239f9a44e828f03 Mon Sep 17 00:00:00 2001
From: Thomas Hartmann <thomas.hartmann@qt.io>
Date: Mon, 27 Apr 2020 15:25:37 +0200
Subject: [PATCH] QmlDesigner: Fix crash

Since we call updateItemSelection via a timer, there is
no guarantee a model is attached.

Task-number: QDS-1939
Change-Id: I37bf40cf3d6a057a8bc695d0d0ec73b6cf17fdb5
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
---
 src/plugins/qmldesigner/components/navigator/navigatorview.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/qmldesigner/components/navigator/navigatorview.cpp b/src/plugins/qmldesigner/components/navigator/navigatorview.cpp
index 86404e0ea0a..ea64f0715a7 100644
--- a/src/plugins/qmldesigner/components/navigator/navigatorview.cpp
+++ b/src/plugins/qmldesigner/components/navigator/navigatorview.cpp
@@ -410,6 +410,9 @@ void NavigatorView::selectedNodesChanged(const QList<ModelNode> &/*selectedNodeL
 
 void NavigatorView::updateItemSelection()
 {
+    if (!isAttached())
+        return;
+
     QItemSelection itemSelection;
     foreach (const ModelNode &node, selectedModelNodes()) {
         const QModelIndex index = indexForModelNode(node);