From 98ad7f96bbe0df49bbffa3ff9e93e25820ac71e9 Mon Sep 17 00:00:00 2001
From: Thomas Hartmann <thomas.hartmann@qt.io>
Date: Wed, 8 Apr 2020 19:18:32 +0200
Subject: [PATCH] QmlDesigner: Add extra check

The node might be also invalid.

Change-Id: I3f9ecd63f178f15c495f6b60d36b02cb54b5d254
Reviewed-by: Aleksei German <aleksei.german@qt.io>
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
---
 .../qmldesigner/designercore/model/qmlitemnode.cpp       | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/plugins/qmldesigner/designercore/model/qmlitemnode.cpp b/src/plugins/qmldesigner/designercore/model/qmlitemnode.cpp
index 8eaa777dde2..4ba478f93cf 100644
--- a/src/plugins/qmldesigner/designercore/model/qmlitemnode.cpp
+++ b/src/plugins/qmldesigner/designercore/model/qmlitemnode.cpp
@@ -497,17 +497,20 @@ bool QmlItemNode::isInStackedContainer() const
 
 bool QmlItemNode::isFlowView() const
 {
-    return modelNode().metaInfo().isSubclassOf("FlowView.FlowView");
+    return modelNode().isValid()
+            && modelNode().metaInfo().isSubclassOf("FlowView.FlowView");
 }
 
 bool QmlItemNode::isFlowItem() const
 {
-    return modelNode().metaInfo().isSubclassOf("FlowView.FlowItem");
+    return modelNode().isValid()
+            && modelNode().metaInfo().isSubclassOf("FlowView.FlowItem");
 }
 
 bool QmlItemNode::isFlowActionArea() const
 {
-    return modelNode().metaInfo().isSubclassOf("FlowView.FlowActionArea");
+    return modelNode().isValid()
+            && modelNode().metaInfo().isSubclassOf("FlowView.FlowActionArea");
 }
 
 ModelNode QmlItemNode::rootModelNode() const