X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FModuleBase%2FModuleBase_Operation.cpp;h=b3bf0b07572308f26b62a2fc2c177a4ae2eb24dc;hb=28c90c232ffe159b88edd156286a398bfa3bb73b;hp=fa9183d31914f278f0addce86a44cbab52bbc6db;hpb=5e2e5c8e92f1d022158ef717c711a8ea79e5dd13;p=modules%2Fshaper.git

diff --git a/src/ModuleBase/ModuleBase_Operation.cpp b/src/ModuleBase/ModuleBase_Operation.cpp
index fa9183d31..b3bf0b075 100644
--- a/src/ModuleBase/ModuleBase_Operation.cpp
+++ b/src/ModuleBase/ModuleBase_Operation.cpp
@@ -221,7 +221,13 @@ bool ModuleBase_Operation::commit()
     disconnect(myPropertyPanel, 0, this, 0);
 
     stopOperation();
-    ModelAPI_Session::get()->finishOperation();
+    // check whether there are modifications performed during the current operation
+    // in the model
+    // in case if there are no modifications, do not increase the undo/redo stack
+    if (ModelAPI_Session::get()->isModified())
+      ModelAPI_Session::get()->finishOperation();
+    else
+      ModelAPI_Session::get()->abortOperation();
 
     emit stopped();