From e63463c95428ad162e5780625851ccd3d752ae70 Mon Sep 17 00:00:00 2001
From: asl <asl@opencascade.com>
Date: Fri, 20 Nov 2009 10:40:51 +0000
Subject: [PATCH] new version of notebook() method

---
 src/SalomeApp/SalomeApp_Study.cxx | 15 ++++++++++-----
 src/SalomeApp/SalomeApp_Study.h   |  3 ++-
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/src/SalomeApp/SalomeApp_Study.cxx b/src/SalomeApp/SalomeApp_Study.cxx
index 25c266986..ed23c52ec 100644
--- a/src/SalomeApp/SalomeApp_Study.cxx
+++ b/src/SalomeApp/SalomeApp_Study.cxx
@@ -85,12 +85,17 @@ _PTR(Study) SalomeApp_Study::studyDS() const
 */
 SALOME::Notebook_ptr SalomeApp_Study::notebook() const
 {
-  SALOME::Notebook_var aRes;
-  SALOMEDS_Study* aStudy = dynamic_cast<SALOMEDS_Study*>( myStudyDS.operator->() );
-  if( aStudy )
-    aRes = aStudy->GetStudy()->GetNotebook();
+  if( CORBA::is_nil( myNotebook ) )
+  {
+    SALOME::Notebook_var aRes;
+    SALOMEDS_Study* aStudy = dynamic_cast<SALOMEDS_Study*>( myStudyDS.operator->() );
+    if( aStudy )
+      aRes = aStudy->GetStudy()->GetNotebook();
+
+    const_cast<SalomeApp_Study*>( this )->myNotebook = aRes._retn();
+  }
 
-  return aRes._retn();
+  return myNotebook;
 }
 
 /*!
diff --git a/src/SalomeApp/SalomeApp_Study.h b/src/SalomeApp/SalomeApp_Study.h
index b9638c50d..a8d5b900b 100644
--- a/src/SalomeApp/SalomeApp_Study.h
+++ b/src/SalomeApp/SalomeApp_Study.h
@@ -104,7 +104,8 @@ private:
   QString             newStudyName() const;
 
 private:
-  _PTR(Study)         myStudyDS;
+  _PTR(Study)          myStudyDS;
+  SALOME::Notebook_ptr myNotebook;
 };
 
 #ifdef WIN32
-- 
2.39.2