From 01a6f9d4fc1a70ba608574962e9c14b4a2cd277b Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Wed, 31 Oct 2018 12:45:05 +0300
Subject: [PATCH] Multi-study removal: re-initialize study in the Python API
 after salome.salome_close() -> salome.salome_init()

---
 src/KERNEL_PY/__init__.py               |  2 ++
 src/KERNEL_PY/salome_study.py           | 10 ++++++++--
 src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx |  5 ++++-
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/src/KERNEL_PY/__init__.py b/src/KERNEL_PY/__init__.py
index cb8a968f0..7c8d97bf1 100755
--- a/src/KERNEL_PY/__init__.py
+++ b/src/KERNEL_PY/__init__.py
@@ -214,6 +214,8 @@ def salome_close():
         pass
     salome_initial=True
     salome_iapp_close()
+    salome_study_close()
+    myStudy, myStudyName = None, None
     pass
 
 
diff --git a/src/KERNEL_PY/salome_study.py b/src/KERNEL_PY/salome_study.py
index 5626aecdf..0ebf612e3 100755
--- a/src/KERNEL_PY/salome_study.py
+++ b/src/KERNEL_PY/salome_study.py
@@ -271,11 +271,11 @@ def FindFileInDataDir(filename):
     #--------------------------------------------------------------------------
 
 def openStudy(theStudyPath):
-    print("openStudy")
+    if verbose(): print("openStudy (begin)")
     global myStudy, myStudyName
     myStudy.Open(theStudyPath)
     myStudyName = myStudy._get_Name()
-    print(theStudyPath, myStudy._get_Name())
+    if verbose(): print("openStudy (end):", theStudyPath, myStudy._get_Name())
 
     #--------------------------------------------------------------------------
 
@@ -306,7 +306,13 @@ def salome_study_init(theStudyPath=None):
         if isinstance(theStudyPath, bytes):
             theStudyPath = str(theStudyPath, 'UTF8')
         openStudy(theStudyPath)
+    else:
+        myStudy.Init()
 
     myStudyName = myStudy._get_Name()
 
     return myStudy, myStudyName
+
+def salome_study_close():
+  global myStudy, myStudyName
+  myStudy, myStudyName = None, None
diff --git a/src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx b/src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx
index 24f558ccb..56718e43f 100644
--- a/src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx
+++ b/src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx
@@ -109,7 +109,7 @@ namespace {
  *  Purpose  : SALOMEDSImpl_Study constructor
  */
 //============================================================================
-SALOMEDSImpl_Study::SALOMEDSImpl_Study()
+SALOMEDSImpl_Study::SALOMEDSImpl_Study() : _doc(NULL)
 {
   _appli = new DF_Application();
   _clipboard = _appli->NewDocument("SALOME_STUDY");
@@ -137,6 +137,9 @@ SALOMEDSImpl_Study::~SALOMEDSImpl_Study()
 //============================================================================
 void SALOMEDSImpl_Study::Init()
 {
+  if (_doc)
+    return; // noop: already initialized
+
   static int _id = 0;
   std::stringstream sstrm;
   sstrm << ++_id;
-- 
2.39.2