From 497561723ebe6ddc64d238427307dd59e6a5fb8b Mon Sep 17 00:00:00 2001
From: eap <eap@opencascade.com>
Date: Thu, 3 May 2012 08:40:24 +0000
Subject: [PATCH] do not clear a command creating a removed group if the
 command does other job like MakeBoundaryMesh() or DoubleNodeGroupNew()

---
 src/SMESH_I/SMESH_2smeshpy.cxx | 12 ++++++++++--
 src/SMESH_I/SMESH_2smeshpy.hxx |  1 +
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/SMESH_I/SMESH_2smeshpy.cxx b/src/SMESH_I/SMESH_2smeshpy.cxx
index 9a1f356fe..dfacfd77c 100644
--- a/src/SMESH_I/SMESH_2smeshpy.cxx
+++ b/src/SMESH_I/SMESH_2smeshpy.cxx
@@ -3700,6 +3700,8 @@ _pyGroup::_pyGroup(const Handle(_pyCommand)& theCreationCmd, const _pyID & id)
   if ( !id.IsEmpty() )
     setID( id );
 
+  myCanClearCreationCmd = true;
+
   const _AString& method = theCreationCmd->GetMethod();
   if ( method == "CreateGroup" ) // CreateGroup() --> CreateEmptyGroup()
   {
@@ -3742,6 +3744,12 @@ _pyGroup::_pyGroup(const Handle(_pyCommand)& theCreationCmd, const _pyID & id)
     }
     myFilter = filter;
   }
+  else
+  {
+    // theCreationCmd does something else apart from creation of this group
+    // and thus it can't be cleared if this group is removed
+    myCanClearCreationCmd = false;
+  }
 }
 
 //================================================================================
@@ -3829,9 +3837,9 @@ void _pyGroup::Process( const Handle(_pyCommand)& theCommand)
 void _pyGroup::Flush()
 {
   if ( !theGen->IsToKeepAllCommands() &&
-       myCreationCmd && myCreationCmd->MethodStartsFrom("DoubleNode") )
+       myCreationCmd && !myCanClearCreationCmd )
   {
-    myCreationCmd.Nullify();
+    myCreationCmd.Nullify(); // this way myCreationCmd won't be cleared
   }
 }
 
diff --git a/src/SMESH_I/SMESH_2smeshpy.hxx b/src/SMESH_I/SMESH_2smeshpy.hxx
index 1fccb3750..b1019b72d 100644
--- a/src/SMESH_I/SMESH_2smeshpy.hxx
+++ b/src/SMESH_I/SMESH_2smeshpy.hxx
@@ -579,6 +579,7 @@ DEFINE_STANDARD_HANDLE (_pyFilter, _pyObject);
 class _pyGroup:  public _pySubMesh
 {
   Handle(_pyFilter) myFilter;
+  bool              myCanClearCreationCmd;
 public:
   _pyGroup(const Handle(_pyCommand)& theCreationCmd, const _pyID & id=_pyID());
   virtual void Process( const Handle(_pyCommand)& theCommand);
-- 
2.30.2