From f5bf0c46be44b5c8625fa60ce45a607c407a82c2 Mon Sep 17 00:00:00 2001
From: vsv <vsv@opencascade.com>
Date: Tue, 28 Aug 2018 16:58:33 +0300
Subject: [PATCH] Fix for removing of all sub-objects

---
 src/XGUI/XGUI_DataModel.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/XGUI/XGUI_DataModel.cpp b/src/XGUI/XGUI_DataModel.cpp
index 31cb8d382..b31e32f36 100644
--- a/src/XGUI/XGUI_DataModel.cpp
+++ b/src/XGUI/XGUI_DataModel.cpp
@@ -132,7 +132,10 @@ void XGUI_DataModel::processEvent(const std::shared_ptr<Events_Message>& theMess
             insertRows(aOldNb - 1, aNewNb - aOldNb, aFirstIdx);
           }
           else if (aNewNb < aOldNb) {
-            removeRows(aNewNb - 1, aOldNb - aNewNb, aFirstIdx);
+            if (aNewNb)
+              removeRows(aNewNb - 1, aOldNb - aNewNb, aFirstIdx);
+            else if (aOldNb)
+              removeRows(0, aOldNb, aFirstIdx);
           }
           dataChanged(aFirstIdx, aLastIdx);
         }
@@ -187,7 +190,10 @@ void XGUI_DataModel::processEvent(const std::shared_ptr<Events_Message>& theMess
           insertRows(aOldNb - 1, aNewNb - aOldNb, aFirstIdx);
         }
         else if (aNewNb < aOldNb) {
-          removeRows(aNewNb - 1, aOldNb - aNewNb, aFirstIdx);
+          if (aNewNb)
+            removeRows(aNewNb - 1, aOldNb - aNewNb, aFirstIdx);
+          else if (aOldNb)
+            removeRows(0, aOldNb, aFirstIdx);
         }
         dataChanged(aFirstIdx, aLastIdx);
       }
-- 
2.39.2