From 9e4e4bd9f2c0a86c21f24d6c80f5dc2c3eb6e97c Mon Sep 17 00:00:00 2001
From: akl <akl@opencascade.com>
Date: Tue, 10 Dec 2013 11:24:50 +0000
Subject: [PATCH] Fix of INTPAL0052217: TC7.3.0:SIGSEGV when update study in
 NoteBook

---
 src/LightApp/LightApp_Application.cxx | 9 +++++++++
 src/LightApp/LightApp_Application.h   | 1 +
 2 files changed, 10 insertions(+)

diff --git a/src/LightApp/LightApp_Application.cxx b/src/LightApp/LightApp_Application.cxx
index f1f7c78d8..c7ec9f7db 100644
--- a/src/LightApp/LightApp_Application.cxx
+++ b/src/LightApp/LightApp_Application.cxx
@@ -1171,6 +1171,15 @@ void LightApp_Application::onSelectionChanged()
   action( EditPasteId )->setEnabled(canPaste);
 }
 
+/*! Reset tree view model */
+void LightApp_Application::onCloseDoc( bool ask )
+{
+  if ( SUIT_DataBrowser* ob = objectBrowser() )
+    ob->setModel(0);
+
+  CAM_Application::onCloseDoc( ask );
+}
+
 /*!
   Adds window to application.
   \param wid - QWidget
diff --git a/src/LightApp/LightApp_Application.h b/src/LightApp/LightApp_Application.h
index 967676ef1..b1e82199c 100644
--- a/src/LightApp/LightApp_Application.h
+++ b/src/LightApp/LightApp_Application.h
@@ -191,6 +191,7 @@ public slots:
   virtual void                        onCopy();
   virtual void                        onPaste();
   virtual void                        onSelectionChanged();
+  virtual void                        onCloseDoc( bool ask = true);
 
 protected:
   virtual void                        createActions();
-- 
2.39.2