From 81c34e7c0817dbbb846cbc3725f2ae8526cf383c Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Thu, 13 May 2010 11:45:29 +0000
Subject: [PATCH] 0020864: EDF 1409 SMESH: Suppression of algorithms causes
 Salome to crash

---
 src/Qtx/QtxTreeView.cxx | 16 ++++++++++++++++
 src/Qtx/QtxTreeView.h   |  1 +
 2 files changed, 17 insertions(+)

diff --git a/src/Qtx/QtxTreeView.cxx b/src/Qtx/QtxTreeView.cxx
index ef551abc4..d86270d85 100644
--- a/src/Qtx/QtxTreeView.cxx
+++ b/src/Qtx/QtxTreeView.cxx
@@ -319,6 +319,22 @@ void QtxTreeView::selectionChanged( const QItemSelection& selected,
   emit( selectionChanged() );
 }
 
+/*!
+  \brief Called when rows are about to be removed.
+  \param parent model index
+  \param start first row to remove
+  \param end last row to remove
+*/
+void QtxTreeView::rowsAboutToBeRemoved( const QModelIndex& parent, int start, int end )
+{
+  QModelIndex curIndex = currentIndex();
+  while ( curIndex.isValid() && curIndex.parent() != parent )
+    curIndex = curIndex.parent();
+  if ( curIndex.isValid() && curIndex.row() >= start && curIndex.row() <= end )
+    setCurrentIndex( QModelIndex() );
+  QTreeView::rowsAboutToBeRemoved( parent, start, end );
+}
+
 /*!
   \brief Expand/collapse the specified item (recursively).
   \param index model index
diff --git a/src/Qtx/QtxTreeView.h b/src/Qtx/QtxTreeView.h
index af16b8284..d63c9bdad 100644
--- a/src/Qtx/QtxTreeView.h
+++ b/src/Qtx/QtxTreeView.h
@@ -57,6 +57,7 @@ public:
 
 protected slots:
   void     onHeaderClicked( int );
+  void     rowsAboutToBeRemoved( const QModelIndex&, int, int );
   void     selectionChanged( const QItemSelection&, const QItemSelection& );
   void     onAppropriate( Qt::Orientation, int, int );
   
-- 
2.39.2