From: ouv <ouv@opencascade.com>
Date: Fri, 9 Aug 2013 12:04:38 +0000 (+0000)
Subject: Possibility to undo empty transactions.
X-Git-Tag: BR_hydro_v_0_1~122
X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=2bb2a74d3111ae2f2eea10996c7e2b923b18d7cb;p=modules%2Fhydro.git

Possibility to undo empty transactions.
---

diff --git a/src/HYDROData/HYDROData_Document.cxx b/src/HYDROData/HYDROData_Document.cxx
index 6062fd6d..bfc30b84 100644
--- a/src/HYDROData/HYDROData_Document.cxx
+++ b/src/HYDROData/HYDROData_Document.cxx
@@ -133,7 +133,12 @@ void HYDROData_Document::StartOperation()
 
 void HYDROData_Document::CommitOperation(const TCollection_ExtendedString& theName)
 {
-  myDoc->CommitCommand();
+  if( !myDoc->CommitCommand() ) // it means that there were no modifications done
+  {
+    myDoc->NewCommand();
+    NewID(); // workaround: do something just to modify the document
+    myDoc->CommitCommand();
+  }
   myTransactionsAfterSave++;
 
   if( theName.Length() != 0 )