From: azv <azv@opencascade.com>
Date: Thu, 17 Oct 2019 09:42:23 +0000 (+0300)
Subject: Issue #3044: Undo list contains empty string for Load python script
X-Git-Tag: V9_4_0rc1~21
X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=90a5c5bd90e41e931f08b64ccbf06cfa376267e1;p=modules%2Fshaper.git

Issue #3044: Undo list contains empty string for Load python script

Improve indexation (do not take into account the empty transactions).
---

diff --git a/src/ModelHighAPI/ModelHighAPI_Services.cpp b/src/ModelHighAPI/ModelHighAPI_Services.cpp
index 98f7aff84..4bcd182fd 100644
--- a/src/ModelHighAPI/ModelHighAPI_Services.cpp
+++ b/src/ModelHighAPI/ModelHighAPI_Services.cpp
@@ -98,9 +98,16 @@ std::shared_ptr<ModelAPI_Result> standardPlane(const std::string & theName){
 //--------------------------------------------------------------------------------------
 void begin()
 {
-  static int aTransactionID = 0;
+  static size_t aTransactionID = 0;
+  static size_t aNbTransactions = -1;
+  size_t aNbUndo = ModelAPI_Session::get()->undoList().size();
+  if (aNbUndo != aNbTransactions) {
+    // the last transaction was not empty, thus increase the ID
+    aNbTransactions = aNbUndo;
+    ++aTransactionID;
+  }
   std::ostringstream aTransactionName;
-  aTransactionName << "Operation_" << ++aTransactionID;
+  aTransactionName << "Operation_" << aTransactionID;
   ModelAPI_Session::get()->startOperation(aTransactionName.str());
 }
 
@@ -123,6 +130,7 @@ void apply()
 {
   auto aSession = ModelAPI_Session::get();
   aSession->finishOperation();
+  // start the next operation
   begin();
 }