From d63aa3e66ea4f15430a40d80d9ecd0c87b557e7e Mon Sep 17 00:00:00 2001
From: azv <azv@opencascade.com>
Date: Thu, 17 Oct 2019 12:01:37 +0300
Subject: [PATCH] Revert "Issue #3044: Undo list contains empty string for Load
 python script"

This reverts commit b82b4aecbd6ccaebeafbf409b8da515e4fea2543.
---
 src/Model/Model_Document.cpp               | 7 -------
 src/Model/Model_Document.h                 | 2 --
 src/Model/Model_Session.cpp                | 5 -----
 src/Model/Model_Session.h                  | 2 --
 src/ModelAPI/ModelAPI_Session.h            | 2 --
 src/ModelHighAPI/ModelHighAPI_Services.cpp | 2 --
 6 files changed, 20 deletions(-)

diff --git a/src/Model/Model_Document.cpp b/src/Model/Model_Document.cpp
index 7bf6290be..be2877848 100644
--- a/src/Model/Model_Document.cpp
+++ b/src/Model/Model_Document.cpp
@@ -852,13 +852,6 @@ bool Model_Document::isModified()
   return myTransactions.size() != myTransactionSave || isOperation();
 }
 
-void Model_Document::clearUndos()
-{
-  myDoc->ClearUndos();
-  myTransactions.clear();
-  myRedos.clear();
-}
-
 bool Model_Document::canUndo()
 {
   // issue 406 : if transaction is opened, but nothing to undo behind, can not undo
diff --git a/src/Model/Model_Document.h b/src/Model/Model_Document.h
index 457a8717b..72a570738 100644
--- a/src/Model/Model_Document.h
+++ b/src/Model/Model_Document.h
@@ -85,8 +85,6 @@ class Model_Document : public ModelAPI_Document
   MODEL_EXPORT virtual bool canUndo();
   //! Undoes last operation
   MODEL_EXPORT virtual void undo();
-  //! Clean the undo list
-  MODEL_EXPORT virtual void clearUndos();
   //! Returns True if there are available Redo-s
   MODEL_EXPORT virtual bool canRedo();
   //! Redoes last operation
diff --git a/src/Model/Model_Session.cpp b/src/Model/Model_Session.cpp
index 4ccc8f1b7..89f90ee4a 100644
--- a/src/Model/Model_Session.cpp
+++ b/src/Model/Model_Session.cpp
@@ -143,11 +143,6 @@ bool Model_Session::isModified()
   return ROOT_DOC->isModified();
 }
 
-void Model_Session::clearUndos()
-{
-  ROOT_DOC->clearUndos();
-}
-
 bool Model_Session::canUndo()
 {
   return ROOT_DOC->canUndo();
diff --git a/src/Model/Model_Session.h b/src/Model/Model_Session.h
index 2ffc8d1bb..b480a67e9 100644
--- a/src/Model/Model_Session.h
+++ b/src/Model/Model_Session.h
@@ -87,8 +87,6 @@ class Model_Session : public ModelAPI_Session, public Events_Listener
   MODEL_EXPORT virtual bool canUndo();
   //! Undoes last operation
   MODEL_EXPORT virtual void undo();
-  //! Clean the undo list
-  MODEL_EXPORT virtual void clearUndos();
   //! Returns True if there are available Redos
   MODEL_EXPORT virtual bool canRedo();
   //! Redoes last operation
diff --git a/src/ModelAPI/ModelAPI_Session.h b/src/ModelAPI/ModelAPI_Session.h
index 8955bcb03..84a925aa2 100644
--- a/src/ModelAPI/ModelAPI_Session.h
+++ b/src/ModelAPI/ModelAPI_Session.h
@@ -78,8 +78,6 @@ class MODELAPI_EXPORT ModelAPI_Session
   virtual bool canUndo() = 0;
   //! Undoes last operation
   virtual void undo() = 0;
-  //! Clean the undo list
-  virtual void clearUndos() = 0;
   //! Returns True if there are available Redos
   virtual bool canRedo() = 0;
   //! Redoes last operation
diff --git a/src/ModelHighAPI/ModelHighAPI_Services.cpp b/src/ModelHighAPI/ModelHighAPI_Services.cpp
index 21ab68248..98f7aff84 100644
--- a/src/ModelHighAPI/ModelHighAPI_Services.cpp
+++ b/src/ModelHighAPI/ModelHighAPI_Services.cpp
@@ -116,8 +116,6 @@ void end()
   }
 
   ModelAPI_Session::get()->finishOperation();
-  // issue #3044: clear undo/redo lists
-  ModelAPI_Session::get()->clearUndos();
   // to update data tree in the end of dumped script execution
   ModelAPI_EventCreator::get()->sendReordered(FeaturePtr());
 }
-- 
2.39.2