From 2af52b19b485181c61d1065fa45ec24b94cb1449 Mon Sep 17 00:00:00 2001
From: mpv <mikhail.ponikarov@opencascade.com>
Date: Thu, 15 May 2014 09:21:38 +0400
Subject: [PATCH] Nested operations

---
 src/Model/Model_Document.cpp           | 7 +++++++
 src/Model/Model_Document.h             | 2 ++
 src/PartSetPlugin/PartSetPlugin_Part.h | 3 +++
 3 files changed, 12 insertions(+)

diff --git a/src/Model/Model_Document.cpp b/src/Model/Model_Document.cpp
index 9d8c2c12a..274fc6f1b 100644
--- a/src/Model/Model_Document.cpp
+++ b/src/Model/Model_Document.cpp
@@ -168,6 +168,10 @@ void Model_Document::close()
 
 void Model_Document::startOperation()
 {
+  // check is it nested or not
+  if (myDoc->HasOpenCommand()) {
+    myIsNested = true;
+  }
   // new command for this
   myDoc->NewCommand();
   // new command for all subs
@@ -181,6 +185,7 @@ void Model_Document::finishOperation()
   // returns false if delta is empty and no transaction was made
   myIsEmptyTr[myTransactionsAfterSave] = !myDoc->CommitCommand();
   myTransactionsAfterSave++;
+  myIsNested = false;
   // finish for all subs
   set<string>::iterator aSubIter = mySubs.begin();
   for(; aSubIter != mySubs.end(); aSubIter++)
@@ -393,6 +398,8 @@ Model_Document::Model_Document(const std::string theID)
 {
   myDoc->SetUndoLimit(UNDO_LIMIT);
   myTransactionsAfterSave = 0;
+  myIsNested = false;
+  myDoc->SetNestedTransactionMode();
   // to have something in the document and avoid empty doc open/save problem
   TDataStd_Integer::Set(myDoc->Main().Father(), 0);
 }
diff --git a/src/Model/Model_Document.h b/src/Model/Model_Document.h
index 0bf22b98e..b314d9dc8 100644
--- a/src/Model/Model_Document.h
+++ b/src/Model/Model_Document.h
@@ -120,6 +120,8 @@ private:
   std::set<std::string> mySubs; ///< set of identifiers of sub-documents of this document
   /// transaction indexes (related to myTransactionsAfterSave) which were empty in this doc
   std::map<int, bool> myIsEmptyTr;
+  /// true if the current operation is nested
+  bool myIsNested;
 };
 
 #endif
diff --git a/src/PartSetPlugin/PartSetPlugin_Part.h b/src/PartSetPlugin/PartSetPlugin_Part.h
index 25af3bea7..eaae463ad 100644
--- a/src/PartSetPlugin/PartSetPlugin_Part.h
+++ b/src/PartSetPlugin/PartSetPlugin_Part.h
@@ -34,6 +34,9 @@ public:
 
   PARTSETPLUGIN_EXPORT virtual boost::shared_ptr<ModelAPI_Document> documentToAdd();
 
+  /// Returns true if this feature must be displayed in the history (top level of Part tree)
+  PARTSETPLUGIN_EXPORT virtual bool isInHistory() {return false;}
+
   /// Use plugin manager for features creation
   PartSetPlugin_Part();
 };
-- 
2.39.2