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Typo-fix by Kunda
[modules/geom.git] / src / GEOM_I / GEOM_Gen_i.cc
index 3dec744598d0d66bea80c39edcbf6df1f18dc184..fc6cee5c4398886e6ed1dd76b387a26ce36ca0ee 100644 (file)
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2012  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
 //
 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
@@ -6,7 +6,7 @@
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
 // License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
 //
 // This library is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-#ifdef WNT
+#ifdef WIN32
 #pragma warning( disable:4786 )
 #endif
 
 
 #include "GEOM_Gen_i.hh"
 #include "GEOM_Object_i.hh"
+#include "GEOM_Field_i.hh"
 #include "GEOM_version.h"
 
-#include <set>
-#include <sstream>
-
 #include "Utils_CorbaException.hxx"
 #include "OpUtil.hxx"
 #include "Utils_ExceptHandlers.hxx"
 #include "utilities.h"
 
-#include "GEOM_Object_i.hh"
 #include "GEOM_Object.hxx"
 #include "GEOM_Function.hxx"
 #include "GEOM_ISubShape.hxx"
-#include <GEOM_PythonDump.hxx>
+#include "GEOM_PythonDump.hxx"
 #include "GEOMImpl_Types.hxx"
 #include "GEOMImpl_CopyDriver.hxx"
+#include "GEOMImpl_IInsertOperations.hxx"
+#include "GEOM_wrap.hxx"
+#include "GEOMUtils_XmlHandler.hxx"
 
 // Cascade headers
 #include <BRep_Builder.hxx>
 #include <TCollection_AsciiString.hxx>
 #include <TColStd_HArray1OfInteger.hxx>
 #include <TopAbs_ShapeEnum.hxx>
-//#include <TopTools_IndexedMapOfShape.hxx>
 #include <TopExp.hxx>
 #include <OSD.hxx>
+#include <TDataStd_ChildNodeIterator.hxx>
+#include <TDocStd_Owner.hxx>
+#include <TDataStd_ListIteratorOfListOfExtendedString.hxx>
 
-#include "SALOMEDS_Tool.hxx"
+#include <SALOMEDS_Tool.hxx>
+#include <SALOMEDS_wrap.hxx>
+#include <Basics_DirUtils.hxx>
+
+#include <set>
+#include <sstream>
+
+#ifdef WIN32
+ #include <windows.h>
+ #include <process.h>
+#else
+ #include <dlfcn.h>
+#endif
+
+#ifdef WIN32
+ #define LibHandle HMODULE
+ #define LoadLib( name ) LoadLibrary( name )
+ #define GetProc GetProcAddress
+ #define UnLoadLib( handle ) FreeLibrary( handle );
+#else
+ #define LibHandle void*
+ #define LoadLib( name ) dlopen( name, RTLD_LAZY | RTLD_GLOBAL )
+ #define GetProc dlsym
+ #define UnLoadLib( handle ) dlclose( handle );
+#endif
 
 //============================================================================
 // function : GEOM_Gen_i()
@@ -86,17 +112,26 @@ GEOM_Gen_i::GEOM_Gen_i(CORBA::ORB_ptr            orb,
   {
     //work around PAL12004, PAL12628
     //OSD::SetSignal( true );
-    bool raiseFPE;
-#ifdef _DEBUG_
-    raiseFPE = true;
-    char* envDisableFPE = getenv("DISABLE_FPE");
-    if (envDisableFPE && atoi(envDisableFPE))
-      raiseFPE = false;
-#else
-    raiseFPE = false;
+    bool raiseFPE = false;
+#if defined(_DEBUG_) | defined(_DEBUG) //the Last for WIN32 default settings
+    char* envEnableFPE = getenv("ENABLE_FPE");
+    if (envEnableFPE && atoi(envEnableFPE))
+      raiseFPE = true;
 #endif
     OSD::SetSignal( raiseFPE );
   }
+
+  GEOMUtils::PluginInfo plugins = GEOMUtils::ReadPluginInfo();
+  GEOMUtils::PluginInfo::const_iterator it;
+  for (it = plugins.begin(); it != plugins.end(); ++it)
+  {
+    try {
+      LoadPlugin((*it).serverLib);
+    }
+    catch (...)  {
+      MESSAGE("Warning: can't load plugin library " << (*it).serverLib);
+    }
+  }
 }
 
 //============================================================================
@@ -106,6 +141,9 @@ GEOM_Gen_i::GEOM_Gen_i(CORBA::ORB_ptr            orb,
 GEOM_Gen_i::~GEOM_Gen_i() {
   delete name_service;
   delete _impl;
+  std::map<std::string, GEOM_GenericOperationsCreator*>::const_iterator it;
+  for ( it = myOpCreatorMap.begin(); it != myOpCreatorMap.end(); ++it)
+    delete (*it).second;
 }
 
 
@@ -118,9 +156,10 @@ char* GEOM_Gen_i::IORToLocalPersistentID(SALOMEDS::SObject_ptr theSObject,
                                          CORBA::Boolean isMultiFile,
                                          CORBA::Boolean isASCII)
 {
-  GEOM::GEOM_Object_var anObject = GEOM::GEOM_Object::_narrow(_orb->string_to_object(IORString));
+  GEOM::GEOM_BaseObject_var anObject =
+    GEOM::GEOM_BaseObject::_narrow(_orb->string_to_object(IORString));
   if (!CORBA::is_nil(anObject)) {
-    return CORBA::string_dup(anObject->GetEntry());
+    return anObject->GetEntry();
   }
   return 0;
 }
@@ -139,13 +178,21 @@ char* GEOM_Gen_i::LocalPersistentIDToIOR(SALOMEDS::SObject_ptr theSObject,
 {
   SALOMEDS::Study_var aStudy = theSObject->GetStudy();
 
-  Handle(GEOM_Object) anObject = _impl->GetObject(aStudy->StudyId(), const_cast<char*>(aLocalPersistentID));
-  TCollection_AsciiString anEntry;
-  TDF_Tool::Entry(anObject->GetEntry(), anEntry);
-  GEOM::GEOM_Object_var obj = GetObject(anObject->GetDocID(), anEntry.ToCString());
+  Handle(::GEOM_BaseObject) anObject =
+    _impl->GetObject(aStudy->StudyId(), aLocalPersistentID);
+  if ( !anObject.IsNull() )
+  {
+    TCollection_AsciiString anEntry;
+    TDF_Tool::Entry(anObject->GetEntry(), anEntry);
+    GEOM::GEOM_BaseObject_var obj = GetObject(anObject->GetDocID(), anEntry.ToCString());
 
-  CORBA::String_var aPersRefString = _orb->object_to_string(obj);
-  return CORBA::string_dup(aPersRefString);
+    CORBA::String_var aPersRefString = _orb->object_to_string(obj);
+    return CORBA::string_dup(aPersRefString);
+  }
+  else
+  {
+    return CORBA::string_dup("");
+  }
 }
 
 //============================================================================
@@ -163,19 +210,22 @@ bool GEOM_Gen_i::CanPublishInStudy(CORBA::Object_ptr theIOR)
 // function : PublishInStudy
 // purpose  :
 //============================================================================
-SALOMEDS::SObject_ptr GEOM_Gen_i::PublishInStudy(SALOMEDS::Study_ptr theStudy,
+SALOMEDS::SObject_ptr GEOM_Gen_i::PublishInStudy(SALOMEDS::Study_ptr   theStudy,
                                                  SALOMEDS::SObject_ptr theSObject,
-                                                 CORBA::Object_ptr theObject,
-                                                 const char* theName) throw (SALOME::SALOME_Exception)
+                                                 CORBA::Object_ptr     theObject,
+                                                 const char*           theName)
+  throw (SALOME::SALOME_Exception)
 {
   Unexpect aCatch(SALOME_SalomeException);
   SALOMEDS::SObject_var aResultSO;
   if(CORBA::is_nil(theObject) || theStudy->_is_nil()) return aResultSO;
-  GEOM::GEOM_Object_var aShape = GEOM::GEOM_Object::_narrow(theObject);
-  if(aShape->_is_nil()) return aResultSO;
+  GEOM::GEOM_BaseObject_var aBaseObj = GEOM::GEOM_BaseObject::_narrow(theObject);
+  GEOM::GEOM_Object_var       aShape = GEOM::GEOM_Object::_narrow(theObject);
+  if(aBaseObj->_is_nil()) return aResultSO;
 
   SALOMEDS::GenericAttribute_var anAttr;
   SALOMEDS::StudyBuilder_var     aStudyBuilder = theStudy->NewBuilder();
+  SALOMEDS::UseCaseBuilder_wrap  useCaseBuilder = theStudy->GetUseCaseBuilder();
 
   SALOMEDS::SComponent_var       aFather = theStudy->FindComponent("GEOM");
   if (aFather->_is_nil()) {
@@ -189,6 +239,10 @@ SALOMEDS::SObject_ptr GEOM_Gen_i::PublishInStudy(SALOMEDS::Study_ptr theStudy,
     aPixMap->SetPixMap("ICON_OBJBROWSER_Geometry");
     aPixMap->UnRegister();
     aStudyBuilder->DefineComponentInstance(aFather, (GEOM::GEOM_Gen_var)GEOM_Gen::_this());
+    // add component to the use case tree
+    // (to support tree representation customization and drag-n-drop)
+    useCaseBuilder->SetRootCurrent();
+    useCaseBuilder->Append( aFather ); // component object is added as the top level item
   }
   if (aFather->_is_nil()) return aResultSO;
 
@@ -197,109 +251,151 @@ SALOMEDS::SObject_ptr GEOM_Gen_i::PublishInStudy(SALOMEDS::Study_ptr theStudy,
   } else {
     if (!theSObject->ReferencedObject(aResultSO))
       aResultSO = SALOMEDS::SObject::_duplicate(theSObject); //SRN: Added Aug 24,2004 : for  the method AddInStudy with theFather argumenet != NULL
-      //THROW_SALOME_CORBA_EXCEPTION("Publish in study supervision graph error",SALOME::BAD_PARAM);
+    //THROW_SALOME_CORBA_EXCEPTION("Publish in study supervision graph error",SALOME::BAD_PARAM);
   }
   CORBA::String_var aGeomObjIOR = _orb->object_to_string(theObject);
   aResultSO->SetAttrString("AttributeIOR",aGeomObjIOR);
 
-  TCollection_AsciiString aShapeName("Shape_");
+  TCollection_AsciiString anObjectName, aNamePrefix("Shape_");
+  CORBA::Long mytype=aBaseObj->GetType();
+
+  // BEGIN: try to find existed name for current shape
+  if ( !aShape->_is_nil() && mytype != GEOM_GROUP)
+  {
+    // receive current TopoDS shape
+    CORBA::String_var entry = aShape->GetEntry();
+    Handle(::GEOM_Object) aGShape = Handle(::GEOM_Object)::DownCast
+      ( _impl->GetObject( aShape->GetStudyID(), entry ));
+    TopoDS_Shape TopoSh = aGShape->GetValue();
+    // find label of main shape
+    GEOM::GEOM_Object_var aMainSh = aShape;
+    while( !aMainSh->IsMainShape() ) {
+      aMainSh = aMainSh->GetMainShape();
+    }
+    entry = aMainSh->GetEntry();
+    Handle(::GEOM_BaseObject) anObj = _impl->GetObject( aMainSh->GetStudyID(), entry );
+    TDF_Label aMainLbl = anObj->GetFunction(1)->GetNamingEntry();
+
+    // check all named shapes using iterator
+    TDF_ChildIDIterator anIt (aMainLbl, TNaming_NamedShape::GetID(), Standard_True);
+
+    for (; anIt.More() && anObjectName.IsEmpty(); anIt.Next()) {
+      Handle(TNaming_NamedShape) anAttr =
+        Handle(TNaming_NamedShape)::DownCast(anIt.Value());
+      if (anAttr.IsNull()) continue;
+      TopoDS_Shape S = anAttr->Get();
+      if (S.IsEqual(TopoSh)) {
+        TDF_Label L = anAttr->Label();
+        Handle(TDataStd_Name) aName;
+        if (L.FindAttribute(TDataStd_Name::GetID(), aName))
+          anObjectName = aName->Get();
+      }
+    }
+  }
+  // END: try to find existed name for current shape
 
-  CORBA::Long mytype=aShape->GetType();
   if ( mytype == GEOM_GROUP ) {
     GEOM::GEOM_IGroupOperations_var anOp = GetIGroupOperations( theStudy->StudyId() );
-    switch ( (TopAbs_ShapeEnum)anOp->GetType( aShape ) ) {
+    switch ( (TopAbs_ShapeEnum)anOp->GetType( aShape )) {
     case TopAbs_VERTEX:
       aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_GROUP_PNT" );
-      aShapeName = "Group_Of_Vertices_";
+      aNamePrefix = "Group_Of_Vertices_";
       break;
     case TopAbs_EDGE:
       aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_GROUP_EDGE");
-      aShapeName = "Group_Of_Edges_";
+      aNamePrefix = "Group_Of_Edges_";
       break;
     case TopAbs_FACE:
       aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_GROUP_FACE");
-      aShapeName = "Group_Of_Faces_";
+      aNamePrefix = "Group_Of_Faces_";
       break;
     case TopAbs_SOLID:
       aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_GROUP_SOLID");
-      aShapeName = "Group_Of_Solids_";
+      aNamePrefix = "Group_Of_Solids_";
       break;
+    default:
+      aNamePrefix = "Group_";
     }
   } else if ( mytype == GEOM_MARKER ) {
     aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_LCS");
-    aShapeName = "LocalCS_";
-  } else if ( mytype > ADVANCED_BASE ) {
+    aNamePrefix = "LocalCS_";
+  }  else if ( mytype >= USER_TYPE_EX ) {
     char buf[20];
-    sprintf( buf, "%d", aShape->GetType() );
+    sprintf( buf, "%d", aBaseObj->GetType() );
+    GEOM::CreationInformationSeq_var infoSeq = aBaseObj->GetCreationInformation();
+    std::string plgId;
+    for ( size_t j = 0; j < infoSeq->length(); ++j )
+      for ( size_t i = 0; i < infoSeq[j].params.length(); ++i ) {
+        std::string param_name  = infoSeq[j].params[i].name.in();
+        std::string param_value = infoSeq[j].params[i].value.in();
+        if( param_name == PLUGIN_NAME) {
+          plgId = param_value;
+          break;
+        }
+      }
+    if(plgId.length() > 0 ) {
+      plgId += "::";
+    }
+    plgId +="ICON_OBJBROWSER_";
+    plgId += buf;
+    aResultSO->SetAttrString("AttributePixMap",plgId.c_str());
+  } else if ( mytype > USER_TYPE ) {
+    char buf[20];
+    sprintf( buf, "%d", aBaseObj->GetType() );
     std::string advId = "ICON_OBJBROWSER_ADVANCED_"; advId += buf;
     aResultSO->SetAttrString("AttributePixMap",advId.c_str());
-    aShapeName = "Advanced_";
-  } else {
+    aNamePrefix = "Advanced_";
+  } else if ( mytype == GEOM_FIELD ) {
+    aNamePrefix = "Field_";
+    GEOM::GEOM_Field_var aField = GEOM::GEOM_Field::_narrow(theObject);
+    if ( !aField->_is_nil() )
+      switch( aField->GetDimension() ) {
+      case 0:
+        aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_FIELD_PNT" ); break;
+      case 1:
+        aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_FIELD_EDGE"); break;
+      case 2:
+        aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_FIELD_FACE"); break;
+      case 3:
+        aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_FIELD_SOLID"); break;
+      default:
+        aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_FIELD_SOLID");
+      }
+  } else if ( mytype == GEOM_FIELD_STEP ) {
+    aNamePrefix = "Step_";
+  } else if ( !aShape->_is_nil() ) {
     GEOM::shape_type myshapetype=aShape->GetShapeType();
     if ( myshapetype == GEOM::COMPOUND ) {
-    aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_COMPOUND" );
-    aShapeName = "Compound_";
-  } else if ( myshapetype == GEOM::COMPSOLID ) {
-    aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_COMPSOLID");
-    aShapeName = "Compsolid_";
-  } else if ( myshapetype == GEOM::SOLID ) {
-    aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_SOLID");
-    aShapeName = "Solid_";
-  } else if ( myshapetype == GEOM::SHELL ) {
-    aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_SHELL");
-    aShapeName = "Shell_";
-  } else if ( myshapetype == GEOM::FACE ) {
-    aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_FACE");
-    aShapeName = "Face_";
-  } else if ( myshapetype == GEOM::WIRE ) {
-    aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_WIRE");
-    aShapeName = "Wire_";
-  } else if ( myshapetype == GEOM::EDGE ) {
-    aResultSO->SetAttrString("AttributePixMap", "ICON_OBJBROWSER_EDGE");
-    aShapeName = "Edge_";
-  } else if ( myshapetype == GEOM::VERTEX ) {
-    aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_VERTEX" );
-    aShapeName = "Vertex_";
-  }
-  }
-  //if (strlen(theName) == 0) aShapeName += TCollection_AsciiString(aResultSO->Tag());
-  //else aShapeName = TCollection_AsciiString(CORBA::string_dup(theName));
-
-  // BEGIN: try to find existed name for current shape
-  bool HasName = false;
-  // recieve current TopoDS shape
-  CORBA::String_var entry = aShape->GetEntry();
-  Handle(GEOM_Object) aGShape = _impl->GetObject(aShape->GetStudyID(), entry);
-  TopoDS_Shape TopoSh = aGShape->GetValue();
-  // find label of main shape
-  GEOM::GEOM_Object_var aMainSh = aShape;
-  while( !aMainSh->IsMainShape() ) {
-    aMainSh = aMainSh->GetMainShape();
-  }
-  entry = aMainSh->GetEntry();
-  Handle(GEOM_Object) anObj = _impl->GetObject(aMainSh->GetStudyID(), entry);
-  TDF_Label aMainLbl = anObj->GetFunction(1)->GetNamingEntry();
-
-  // check all named shapes using iterator
-  TDF_ChildIDIterator anIt (aMainLbl, TNaming_NamedShape::GetID(), Standard_True);
-
-  for (; anIt.More() && !HasName; anIt.Next()) {
-    Handle(TNaming_NamedShape) anAttr =
-      Handle(TNaming_NamedShape)::DownCast(anIt.Value());
-    if (anAttr.IsNull()) continue;
-    TopoDS_Shape S = anAttr->Get();
-    if (S.IsEqual(TopoSh)) {
-      TDF_Label L = anAttr->Label();
-      Handle(TDataStd_Name) aName;
-      if (L.FindAttribute(TDataStd_Name::GetID(), aName)) {
-        aShapeName = aName->Get();
-        HasName = true;
-      }
+      aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_COMPOUND" );
+      aNamePrefix = "Compound_";
+    } else if ( myshapetype == GEOM::COMPSOLID ) {
+      aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_COMPSOLID");
+      aNamePrefix = "Compsolid_";
+    } else if ( myshapetype == GEOM::SOLID ) {
+      aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_SOLID");
+      aNamePrefix = "Solid_";
+    } else if ( myshapetype == GEOM::SHELL ) {
+      aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_SHELL");
+      aNamePrefix = "Shell_";
+    } else if ( myshapetype == GEOM::FACE ) {
+      aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_FACE");
+      aNamePrefix = "Face_";
+    } else if ( myshapetype == GEOM::WIRE ) {
+      aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_WIRE");
+      aNamePrefix = "Wire_";
+    } else if ( myshapetype == GEOM::EDGE ) {
+      aResultSO->SetAttrString("AttributePixMap", "ICON_OBJBROWSER_EDGE");
+      aNamePrefix = "Edge_";
+    } else if ( myshapetype == GEOM::VERTEX ) {
+      aResultSO->SetAttrString("AttributePixMap","ICON_OBJBROWSER_VERTEX" );
+      aNamePrefix = "Vertex_";
     }
   }
-  // END: try to find existed name for current shape
+  if ( anObjectName.IsEmpty() )
+  {
+    //if (strlen(theName) == 0) aNamePrefix += TCollection_AsciiString(aResultSO->Tag());
+    //else anObjectName = TCollection_AsciiString(CORBA::string_dup(theName));
 
-  if (!HasName) {
     // asv : 11.11.04 Introducing a more sofisticated method of name creation, just as
     //       it is done in GUI in GEOMBase::GetDefaultName() - not just add a Tag() == number
     //       of objects in the study, but compute a number of objects with the same prefix
@@ -307,34 +403,33 @@ SALOMEDS::SObject_ptr GEOM_Gen_i::PublishInStudy(SALOMEDS::Study_ptr theStudy,
     if ( strlen( theName ) == 0 ) { // MOST PROBABLY CALLED FROM BATCHMODE OR SUPERVISOR
       int i = 0;                    // (WITH EMPTY NEW NAME)
       SALOMEDS::SObject_var obj;
-      TCollection_AsciiString aNewShapeName;
       do {
-        aNewShapeName = aShapeName + TCollection_AsciiString(++i);
-        obj = theStudy->FindObject( aNewShapeName.ToCString() );
+        anObjectName = aNamePrefix + TCollection_AsciiString(++i);
+        obj = theStudy->FindObject( anObjectName.ToCString() );
       }
       while ( !obj->_is_nil() );
-      aShapeName = aNewShapeName;
     }
-    else // MOST PROBABLY CALLED FROM GEOM GUI (ALREADY WITH VALID NAME)
-      aShapeName = TCollection_AsciiString((char*)theName);
+    else { // MOST PROBABLY CALLED FROM GEOM GUI (ALREADY WITH VALID NAME)
+      anObjectName = theName;
+    }
   }
 
   //Set the study entry as a name of  the published GEOM_Object
-  CORBA::String_var anID =aResultSO->GetID();
-  aShape->SetStudyEntry(anID.in());
+  CORBA::String_var anID = aResultSO->GetID();
+  aBaseObj->SetStudyEntry(anID.in());
 
   //Set a name of the added shape
-  aResultSO->SetAttrString("AttributeName",aShapeName.ToCString());
+  aResultSO->SetAttrString("AttributeName",anObjectName.ToCString());
 
   //Set NoteBook variables used in the object creation
   TCollection_AsciiString aVars;
-  CORBA::String_var aString=aShape->GetParameters();
+  CORBA::String_var aString=aBaseObj->GetParameters();
   SALOMEDS::ListOfListOfStrings_var aSections = theStudy->ParseVariables(aString);
   for(int i = 0, n = aSections->length(); i < n; i++) {
     SALOMEDS::ListOfStrings aListOfVars = aSections[i];
     for(int j = 0, m = aListOfVars.length(); j < m; j++) {
       if(theStudy->IsVariable(aListOfVars[j].in()))
-        aVars += TCollection_AsciiString(aListOfVars[j].in());
+        aVars += aListOfVars[j].in();
       if(j != m-1)
         aVars += ":";
     }
@@ -346,15 +441,18 @@ SALOMEDS::SObject_ptr GEOM_Gen_i::PublishInStudy(SALOMEDS::Study_ptr theStudy,
   aFather->UnRegister();
 
   //Set a name of the GEOM object
-  aShape->SetName(aShapeName.ToCString());
+  aBaseObj->SetName(anObjectName.ToCString());
+
+  // add object to the use case tree
+  // (to support tree representation customization and drag-n-drop)
+  useCaseBuilder->AppendTo( aResultSO->GetFather(), aResultSO );
 
   return aResultSO._retn();
 }
 
-
 //============================================================================
 // function : CreateAndPublishGroup
-// purpose  : auxilary for PublishNamedShapesInStudy
+// purpose  : auxiliary for PublishNamedShapesInStudy
 //============================================================================
 void GEOM_Gen_i::CreateAndPublishGroup(SALOMEDS::Study_ptr theStudy,
                                        GEOM::GEOM_Object_var theMainShape,
@@ -365,18 +463,17 @@ void GEOM_Gen_i::CreateAndPublishGroup(SALOMEDS::Study_ptr theStudy,
                                        GEOM::ListOfGO_var aResList)
 {
   CORBA::String_var entry = theMainShape->GetEntry();
-  Handle(GEOM_Object) aMainShape = _impl->GetObject(theMainShape->GetStudyID(), entry);
+  //Handle(::GEOM_Object) aMainShape = _impl->GetObject(theMainShape->GetStudyID(), entry);
   Handle(TColStd_HArray1OfInteger) anArray;
   if(SeqS.Length()>0) {
     // create a group
     GEOM::GEOM_IGroupOperations_var GOp = GetIGroupOperations(theStudy->StudyId());
-    GEOM::GEOM_Object_ptr GrObj =
-      GOp->CreateGroup( theMainShape, SeqS.Value(1).ShapeType() );
+    GEOM::GEOM_Object_wrap GrObj = GOp->CreateGroup( theMainShape, SeqS(1).ShapeType() );
     AddInStudy(theStudy, GrObj, GrName, theMainShape._retn());
-    CORBA::String_var GrEntry = GrObj->GetEntry();
-    Handle(GEOM_Object) HGrObj = _impl->GetObject(GrObj->GetStudyID(), GrEntry);
+    //CORBA::String_var GrEntry = GrObj->GetEntry();
+    //Handle(::GEOM_Object) HGrObj = _impl->GetObject(GrObj->GetStudyID(), GrEntry);
     // add named objects
-    //Handle(GEOM_Object) anObj;
+    //Handle(::GEOM_Object) anObj;
     for(int i=1; i<=SeqS.Length(); i++) {
       TopoDS_Shape aValue = SeqS.Value(i);
       //anArray = new TColStd_HArray1OfInteger(1,1);
@@ -385,7 +482,7 @@ void GEOM_Gen_i::CreateAndPublishGroup(SALOMEDS::Study_ptr theStudy,
       GOp->AddObject(GrObj,anIndex);
       //anObj = GEOM_Engine::GetEngine()->AddObject(aMainShape->GetDocID(), GEOM_SUBSHAPE);
       //if (anObj.IsNull()) continue;
-      //Handle(GEOM_Function) aFunction = anObj->AddFunction(GEOM_Object::GetSubShapeID(), 1);
+      //Handle(::GEOM_Function) aFunction = anObj->AddFunction(GEOM_Object::GetSubShapeID(), 1);
       //if (aFunction.IsNull()) continue;
       //GEOM_ISubShape aSSI(aFunction);
       //aSSI.SetMainShape(aMainShape->GetLastFunction());
@@ -419,7 +516,8 @@ GEOM::ListOfGO* GEOM_Gen_i::
   if(theMainShape->_is_nil()) return aResList._retn();
 
   CORBA::String_var entry = theMainShape->GetEntry();
-  Handle(GEOM_Object) aMainShape = _impl->GetObject(theMainShape->GetStudyID(), entry);
+  Handle(::GEOM_Object) aMainShape = Handle(::GEOM_Object)::DownCast
+    ( _impl->GetObject( theMainShape->GetStudyID(), entry ));
   if (aMainShape.IsNull()) return aResList._retn();
   TopoDS_Shape MainSh = aMainShape->GetValue();
 
@@ -489,7 +587,7 @@ SALOMEDS::TMPFile* GEOM_Gen_i::Save(SALOMEDS::SComponent_ptr theComponent,
   // OCCT BUG: cannot save a document (in current folder)
   // if directory name is empty
   if (aTmpDir.size() == 0) {
-#ifdef WNT
+#ifdef WIN32
     aTmpDir = ".\\";
 #else
     aTmpDir = "./";
@@ -504,7 +602,7 @@ SALOMEDS::TMPFile* GEOM_Gen_i::Save(SALOMEDS::SComponent_ptr theComponent,
   if (isMultiFile)
     aNameWithExt = TCollection_AsciiString((char*)(SALOMEDS_Tool::GetNameFromPath
                                                    (theComponent->GetStudy()->URL())).c_str());
-  aNameWithExt += TCollection_AsciiString("_GEOM.sgd");
+  aNameWithExt += TCollection_AsciiString("_GEOM.cbf");
   aSeq[0] = CORBA::string_dup(aNameWithExt.ToCString());
   // Build a full file name of temporary file
   TCollection_AsciiString aFullName = TCollection_AsciiString((char*)aTmpDir.c_str()) + aNameWithExt;
@@ -552,7 +650,7 @@ CORBA::Boolean GEOM_Gen_i::Load(SALOMEDS::SComponent_ptr theComponent,
   // OCCT BUG: cannot load a document (from current folder)
   // if directory name is empty
   if (aTmpDir.size() == 0) {
-#ifdef WNT
+#ifdef WIN32
     aTmpDir = ".\\";
 #else
     aTmpDir = "./";
@@ -565,20 +663,46 @@ CORBA::Boolean GEOM_Gen_i::Load(SALOMEDS::SComponent_ptr theComponent,
 
   // Prepare a file name to open
   TCollection_AsciiString aNameWithExt("");
-  if (isMultiFile)
-    aNameWithExt = TCollection_AsciiString((char*)(SALOMEDS_Tool::GetNameFromPath
-                                                   (theComponent->GetStudy()->URL())).c_str());
-  aNameWithExt += TCollection_AsciiString("_GEOM.sgd");
+  SALOMEDS::Study_var study = theComponent->GetStudy();
+
+  // Get the file name.
+  int         i;
+  int         aLength  = aSeq->length();
+  const char *aGeomSgd = "_GEOM.sgd";
+  const char *aGeomcbf = "_GEOM.cbf";
+
+  for(i = 0; i < aLength; i++) {
+    std::string aName(aSeq[i]);
+
+    if (aName.rfind(aGeomSgd) != std::string::npos ||
+        aName.rfind(aGeomcbf) != std::string::npos) {
+      aNameWithExt = aName.c_str();
+      break;
+    }
+  }
+
   TCollection_AsciiString aFullName = (TCollection_AsciiString((char*)aTmpDir.c_str()) + aNameWithExt);
 
   // Open document
-  if (!_impl->Load(theComponent->GetStudy()->StudyId(),(char*) aFullName.ToCString())) return false;
+  if (!_impl->Load(study->StudyId(),(char*) aFullName.ToCString())) return false;
 
   // Remove the created file and tmp directory
   if (!isMultiFile) SALOMEDS_Tool::RemoveTemporaryFiles(aTmpDir.c_str(), aSeq.in(), true);
 
-  SALOMEDS::Study_var Study = theComponent->GetStudy();
-  TCollection_AsciiString name (Study->Name());
+  // creation of tree nodes for all data objects in the study
+  // to support tree representation customization and drag-n-drop:
+  SALOMEDS::UseCaseBuilder_wrap useCaseBuilder = study->GetUseCaseBuilder();
+  if ( !useCaseBuilder->IsUseCaseNode( theComponent ) ) {
+    useCaseBuilder->SetRootCurrent();
+    useCaseBuilder->Append( theComponent ); // component object is added as the top level item
+  }
+
+  SALOMEDS::ChildIterator_wrap it = study->NewChildIterator( theComponent );
+  for ( it->InitEx(true); it->More(); it->Next() ) {
+    if ( !useCaseBuilder->IsUseCaseNode( it->Value() ) ) {
+      useCaseBuilder->AppendTo( it->Value()->GetFather(), it->Value() );
+    }
+  }
 
   return true;
 }
@@ -672,7 +796,8 @@ SALOMEDS::SObject_ptr GEOM_Gen_i::PasteInto(const SALOMEDS::TMPFile& theStream,
   // Find the current Study and StudyBuilder
   SALOMEDS::Study_var aStudy = theObject->GetStudy();
   SALOMEDS::StudyBuilder_var aStudyBuilder = aStudy->NewBuilder();
-
+  SALOMEDS::UseCaseBuilder_var anUseCaseBuilder = aStudy->GetUseCaseBuilder();
+  SALOMEDS::SObject_var aNewSO;
   // Retrieve a TopoDS_Shape from byte stream
   TopoDS_Shape aTopology;
   std::istringstream aStreamedBrep((char*) &theStream[0]);
@@ -680,24 +805,23 @@ SALOMEDS::SObject_ptr GEOM_Gen_i::PasteInto(const SALOMEDS::TMPFile& theStream,
   try {
     BRepTools::Read(aTopology, aStreamedBrep, aBuilder);
   } catch (Standard_Failure) {
-    return false;
+    return aNewSO._retn();
   }
 
   // SObject of the created shape is theObject or new Child of Component if theObject == geom component
-  SALOMEDS::SObject_var aNewSO;
   if (strcmp(theObject->GetFatherComponent()->GetID(),theObject->GetID()) == 0) {
     aNewSO = aStudyBuilder->NewObject(theObject);
   } else aNewSO = SALOMEDS::SObject::_duplicate(theObject);
 
 
   //Create a new GEOM_Object
-  Handle(GEOM_Object) anObj = _impl->AddObject(aNewSO->GetStudy()->StudyId(), theObjectID);
-  Handle(GEOM_Function) aFunction = anObj->AddFunction(GEOMImpl_CopyDriver::GetID(), COPY_WITHOUT_REF);
+  Handle(::GEOM_Object) anObj = _impl->AddObject(aNewSO->GetStudy()->StudyId(), theObjectID);
+  Handle(::GEOM_Function) aFunction = anObj->AddFunction(GEOMImpl_CopyDriver::GetID(), COPY_WITHOUT_REF);
   aFunction->SetValue(aTopology);
 
   TCollection_AsciiString anEntry;
   TDF_Tool::Entry(anObj->GetEntry(), anEntry);
-  GEOM::GEOM_Object_var obj = GetObject(anObj->GetDocID(), anEntry.ToCString());
+  GEOM::GEOM_BaseObject_var obj = GetObject(anObj->GetDocID(), anEntry.ToCString());
 
   //Set the study entry of the published GEOM_Object
   obj->SetStudyEntry(aNewSO->GetID());
@@ -709,6 +833,10 @@ SALOMEDS::SObject_ptr GEOM_Gen_i::PasteInto(const SALOMEDS::TMPFile& theStream,
   anIOR->SetValue(objStr.in());
   anIOR->UnRegister();
 
+  // add object to the use case tree
+  // (to support tree representation customization and drag-n-drop)
+  anUseCaseBuilder->AppendTo( aNewSO->GetFather(), aNewSO );
+
   // Return the created in the Study SObject
   return aNewSO._retn();
 }
@@ -726,10 +854,10 @@ char* GEOM_Gen_i::ComponentDataType()
 // function : AddInStudy
 // purpose  :
 //============================================================================
-SALOMEDS::SObject_ptr GEOM_Gen_i::AddInStudy (SALOMEDS::Study_ptr theStudy,
-                                              GEOM::GEOM_Object_ptr theObject,
-                                              const char* theName,
-                                              GEOM::GEOM_Object_ptr theFather)
+SALOMEDS::SObject_ptr GEOM_Gen_i::AddInStudy (SALOMEDS::Study_ptr       theStudy,
+                                              GEOM::GEOM_BaseObject_ptr theObject,
+                                              const char*               theName,
+                                              GEOM::GEOM_BaseObject_ptr theFather)
 {
   SALOMEDS::SObject_var aResultSO;
   if(theObject->_is_nil() || theStudy->_is_nil()) return aResultSO;
@@ -739,35 +867,33 @@ SALOMEDS::SObject_ptr GEOM_Gen_i::AddInStudy (SALOMEDS::Study_ptr theStudy,
 
   if(!theFather->_is_nil()) {
     IOR = _orb->object_to_string(theFather);
-    SALOMEDS::SObject_var aFatherSO = theStudy->FindObjectIOR(IOR.in());
+    SALOMEDS::SObject_wrap aFatherSO = theStudy->FindObjectIOR(IOR.in());
     if(aFatherSO->_is_nil()) return aResultSO._retn();
     aResultSO = aStudyBuilder->NewObject(aFatherSO);
-    aFatherSO->UnRegister();
     //aStudyBuilder->Addreference(aResultSO, aResultSO);
   }
 
   aResultSO = PublishInStudy(theStudy, aResultSO, theObject, theName);
   if(aResultSO->_is_nil()) return aResultSO._retn();
 
-  GEOM::ListOfGO_var aList = theObject->GetDependency();
+  GEOM::ListOfGBO_var aList = theObject->GetDependency();
   Standard_Integer aLength = aList->length();
   if(aLength < 1) return aResultSO._retn();
 
   //Publish the arguments
   TCollection_AsciiString aPrevID; // to avoid multiple references to same object
   for(Standard_Integer i = 0; i< aLength; i++) {
-    GEOM::GEOM_Object_var anObject = aList[i];
+    GEOM::GEOM_BaseObject_var anObject = aList[i];
     if(anObject->_is_nil()) continue;
     IOR = _orb->object_to_string(anObject);
-    SALOMEDS::SObject_var aSO =  theStudy->FindObjectIOR(IOR.in());
+    SALOMEDS::SObject_wrap aSO =  theStudy->FindObjectIOR(IOR.in());
     if(aSO->_is_nil()) continue;
     CORBA::String_var anID = aSO->GetID();
     if ( aPrevID == anID.in() ) continue;
     aPrevID = anID.in();
-    SALOMEDS::SObject_var aSubSO = aStudyBuilder->NewObject(aResultSO);
+    SALOMEDS::SObject_wrap aSubSO = aStudyBuilder->NewObject(aResultSO);
     aStudyBuilder->Addreference(aSubSO, aSO);
-    aSO->UnRegister();
-    aSubSO->UnRegister();
+    theStudy->GetUseCaseBuilder()->AppendTo( aResultSO, aSubSO );
   }
 
   return aResultSO._retn();
@@ -793,7 +919,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapesO (SALOMEDS::Study_ptr     theStudy,
   CORBA::String_var anIORo = _orb->object_to_string(theObject);
   SALOMEDS::SObject_var aSO = theStudy->FindObjectIOR(anIORo.in());
   //PTv, IMP 0020001, The salome object <aSO>
-  // is not obligatory in case of invokation from script
+  // is not obligatory in case of invocation from script
   // if (CORBA::is_nil(aSO))
   //  return aParts._retn();
 
@@ -823,7 +949,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapesO (SALOMEDS::Study_ptr     theS
   CORBA::String_var anIORo = _orb->object_to_string(theObject);
   SALOMEDS::SObject_var aSO = theStudy->FindObjectIOR(anIORo.in());
   //PTv, IMP 0020001, The salome object <aSO>
-  // is not obligatory in case of invokation from script
+  // is not obligatory in case of invocation from script
   // if (CORBA::is_nil(aSO))
   //  return aParts._retn();
 
@@ -907,7 +1033,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
 {
   GEOM::ListOfGO_var aParts = new GEOM::ListOfGO;
   //PTv, IMP 0020001, The salome object <theSObject>
-  //     is not obligatory in case of invokation from script
+  //     is not obligatory in case of invocation from script
   if (CORBA::is_nil(theStudy) || CORBA::is_nil(theObject) /*|| CORBA::is_nil(theSObject)*/)
     return aParts._retn();
 
@@ -930,8 +1056,12 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
   }
   else {
     // Get all arguments
-    aList = theObject->GetDependency();
-    aLength = aList->length();
+    GEOM::ListOfGBO_var boList = theObject->GetDependency();
+    aLength = boList->length();
+    aList = new GEOM::ListOfGO;
+    aList->length(aLength);
+    for (int i = 0; i < aLength; i++)
+      aList[i] = GEOM::GEOM_Object::_narrow( boList[i] );
     nbArgsActual = aLength;
   }
 
@@ -968,6 +1098,9 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
     GEOM::GEOM_IGroupOperations_var    aGroupOp = GetIGroupOperations(theStudy->StudyId());
     GEOM::GEOM_ITransformOperations_var aTrsfOp = GetITransformOperations(theStudy->StudyId());
 
+    PortableServer::Servant aServant = _poa->reference_to_servant(aTrsfOp.in());
+    GEOM_ITransformOperations_i*      aTrsfOpSv = dynamic_cast<GEOM_ITransformOperations_i*>(aServant);
+
     // Reconstruct arguments and tree of sub-shapes of the arguments
     CORBA::String_var anIOR;
     SALOMEDS::StudyBuilder_var aStudyBuilder = theStudy->NewBuilder();
@@ -998,19 +1131,19 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
         case GEOM::FSM_MultiTransformed:
           {
             // Only for Multi-transformations
-            GEOM::GEOM_Object_var anArgOTrsf = aTrsfOp->TransformLikeOtherCopy(anArgO, theObject);
+            GEOM::GEOM_Object_var anArgOTrsf = aTrsfOpSv->TransformLikeOtherCopy(anArgO, theObject);
             if (!CORBA::is_nil(anArgOTrsf)) {
               CORBA::String_var anArgOTrsfEntry = anArgOTrsf->GetEntry();
-              Handle(GEOM_Object) anArgOTrsfImpl = _impl->GetObject(anArgOTrsf->GetStudyID(), anArgOTrsfEntry);
-              Handle(GEOM_Function) anArgOTrsfFun = anArgOTrsfImpl->GetLastFunction();
+              Handle(::GEOM_BaseObject) anArgOTrsfImpl = _impl->GetObject(anArgOTrsf->GetStudyID(), anArgOTrsfEntry);
+              Handle(::GEOM_Function) anArgOTrsfFun = anArgOTrsfImpl->GetLastFunction();
               anArgOTrsfFun->SetDescription("");
               aSubO = aShapesOp->GetInPlace(theObject, anArgOTrsf);
             }
             /*
-            Handle(GEOM_Function) anOFun = theObject->GetLastFunction();
+            Handle(::GEOM_Function) anOFun = theObject->GetLastFunction();
             if (!anOFun.IsNull()) {
               CORBA::String_var entryArg = anArgO->GetEntry();
-              Handle(GEOM_Object) anArgOImpl = _impl->GetObject(anArgO->GetStudyID(), entryArg);
+              Handle(::GEOM_Object) anArgOImpl = _impl->GetObject(anArgO->GetStudyID(), entryArg);
               if (!anArgOImpl.IsNull()) {
                 TopoDS_Shape anArgOShape = anArgOImpl->GetValue();
                 TopoDS_Shape aMultiArgShape;
@@ -1020,7 +1153,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
                   {
                     GEOMImpl_ITranslate aTI (anOFun);
                     aMultiArgShape = GEOMImpl_ITransformOperations::TranslateShape1D(anArgOShape, &aTI);
-                    //anArgOMulti = aTrsfOp->Translate1D(anArgO, , , );
+                    //anArgOMulti = aTrsfOpSv->Translate1D(anArgO, , , );
                   }
                   break;
                 case TRANSLATE_2D:
@@ -1045,7 +1178,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
                   {}
                 }
                 GEOM::GEOM_Object_var anArgOMulti = (aMultiArgShape); // TODO
-                Handle(GEOM_Function) anArgOMultiFun = anArgOMulti->GetLastFunction();
+                Handle(::GEOM_Function) anArgOMultiFun = anArgOMulti->GetLastFunction();
                 anArgOMultiFun->SetDescription("");
                 aSubO = aShapesOp->GetInPlace(theObject, anArgOMulti);
               }
@@ -1196,8 +1329,8 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
   aResParts->length(nb);
   if (nb > 0)
   {
-    Handle(GEOM_Object) aMainObj = _impl->GetObject(theObject->GetStudyID(), theObject->GetEntry());
-    Handle(GEOM_Function) aFunction = aMainObj->GetLastFunction();
+    Handle(::GEOM_BaseObject) aMainObj = _impl->GetObject(theObject->GetStudyID(), theObject->GetEntry());
+    Handle(::GEOM_Function) aFunction = aMainObj->GetLastFunction();
     GEOM::TPythonDump pd (aFunction, true);
     pd <<"[";
     int i = 0, j = 0;
@@ -1212,8 +1345,8 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
       anObjEntryMap.insert(anEntry);
       aResParts[nbRes++] = anObj;
       // clear python dump of object
-      Handle(GEOM_Object) aGeomObj = _impl->GetObject(anObj->GetStudyID(), anEntry);
-      Handle(GEOM_Function) anObjFun = aGeomObj->GetLastFunction();
+      Handle(::GEOM_BaseObject) aGeomObj = _impl->GetObject(anObj->GetStudyID(), anEntry);
+      Handle(::GEOM_Function)   anObjFun = aGeomObj->GetLastFunction();
       if ( !anObjFun.IsNull() )
         anObjFun->SetDescription( "" );
       if ( j > 0 )
@@ -1230,13 +1363,13 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
       GEOM::GEOM_Object_var anObj = anOutArgs[ i ];
       if (CORBA::is_nil(anObj))
         continue;
-      Handle(GEOM_Object) aGeomObj = _impl->GetObject(anObj->GetStudyID(), anObj->GetEntry());
+      Handle(::GEOM_BaseObject) aGeomObj = _impl->GetObject(anObj->GetStudyID(), anObj->GetEntry());
       if ( j > 0 )
         pd << ", ";
       pd << aGeomObj;
       j++;
     }
-    pd <<"]" << ", " <<"geompy.GEOM.";
+    pd <<"]" << ", " <<"GEOM.";
     switch (theFindMethod) {
     case GEOM::FSM_GetInPlace:
       pd << "FSM_GetInPlace"; break;
@@ -1284,6 +1417,9 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapesOneLevel (SALOMEDS::Study_ptr     th
   GEOM::GEOM_IGroupOperations_var    aGroupOp = GetIGroupOperations(theStudy->StudyId());
   GEOM::GEOM_ITransformOperations_var aTrsfOp = GetITransformOperations(theStudy->StudyId());
 
+  PortableServer::Servant aServant = _poa->reference_to_servant(aTrsfOp.in());
+  GEOM_ITransformOperations_i*      aTrsfOpSv = dynamic_cast<GEOM_ITransformOperations_i*>(aServant);
+
   // Reconstruct published sub-shapes
   SALOMEDS::ChildIterator_var it = theStudy->NewChildIterator(theOldSO);
 
@@ -1316,11 +1452,11 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapesOneLevel (SALOMEDS::Study_ptr     th
         case GEOM::FSM_MultiTransformed:
           {
             // Only for Multi-transformations
-            GEOM::GEOM_Object_var anArgOTrsf = aTrsfOp->TransformLikeOtherCopy(anOldSubO, theNewO);
+            GEOM::GEOM_Object_var anArgOTrsf = aTrsfOpSv->TransformLikeOtherCopy(anOldSubO, theNewO);
             if (!CORBA::is_nil(anArgOTrsf)) {
               CORBA::String_var anArgOTrsfEntry = anArgOTrsf->GetEntry();
-              Handle(GEOM_Object) anArgOTrsfImpl = _impl->GetObject(anArgOTrsf->GetStudyID(), anArgOTrsfEntry);
-              Handle(GEOM_Function) anArgOTrsfFun = anArgOTrsfImpl->GetLastFunction();
+              Handle(::GEOM_BaseObject) anArgOTrsfImpl = _impl->GetObject(anArgOTrsf->GetStudyID(), anArgOTrsfEntry);
+              Handle(::GEOM_Function) anArgOTrsfFun = anArgOTrsfImpl->GetLastFunction();
               anArgOTrsfFun->SetDescription("");
               aNewSubO = aShapesOp->GetInPlace(theNewO, anArgOTrsf);
             }
@@ -1489,7 +1625,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapes(SALOMEDS::Study_ptr     theStu
 {
   GEOM::ListOfGO_var aParts = new GEOM::ListOfGO;
   //PTv, IMP 0020001, The salome object <theSObject>
-  //     is not obligatory in case of invokation from script
+  //     is not obligatory in case of invocation from script
   if (CORBA::is_nil(theStudy) || CORBA::is_nil(theObject) /*|| CORBA::is_nil(theSObject)*/)
     return aParts._retn();
 
@@ -1499,8 +1635,8 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapes(SALOMEDS::Study_ptr     theStu
     return aParts._retn();
 
   // Get all arguments
-  GEOM::ListOfGO_var anOpArgsList = theObject->GetDependency();
-  Standard_Integer nbArgsActual = anOpArgsList->length();
+  GEOM::ListOfGBO_var anOpArgsList = theObject->GetDependency();
+  Standard_Integer    nbArgsActual = anOpArgsList->length();
 
   // If anOpArgsList list is empty, nothing to do
   if (nbArgsActual == 0)
@@ -1522,7 +1658,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapes(SALOMEDS::Study_ptr     theStu
   for (int j = 0; j < nbArgsActual; j++) {
     CORBA::String_var anEntry = anOpArgsList[j]->GetEntry();
     if (anArgs.count(anEntry.in())) {
-      aList[k] = GEOM::GEOM_Object::_duplicate(anOpArgsList[j]);
+      aList[k] = GEOM::GEOM_Object::_narrow(anOpArgsList[j]);
       k++;
     }
   }
@@ -1559,6 +1695,9 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapes(SALOMEDS::Study_ptr     theStu
     GEOM::GEOM_IGroupOperations_var    aGroupOp = GetIGroupOperations(theStudy->StudyId());
     GEOM::GEOM_ITransformOperations_var aTrsfOp = GetITransformOperations(theStudy->StudyId());
 
+    PortableServer::Servant aServant = _poa->reference_to_servant(aTrsfOp.in());
+    GEOM_ITransformOperations_i*      aTrsfOpSv = dynamic_cast<GEOM_ITransformOperations_i*>(aServant);
+
     // Reconstruct arguments and tree of sub-shapes of the arguments
     CORBA::String_var anIOR;
     SALOMEDS::StudyBuilder_var aStudyBuilder = theStudy->NewBuilder();
@@ -1589,11 +1728,11 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapes(SALOMEDS::Study_ptr     theStu
         case GEOM::FSM_MultiTransformed:
           {
             // Only for Multi-transformations
-            GEOM::GEOM_Object_var anArgOTrsf = aTrsfOp->TransformLikeOtherCopy(anArgO, theObject);
+            GEOM::GEOM_Object_var anArgOTrsf = aTrsfOpSv->TransformLikeOtherCopy(anArgO, theObject);
             if (!CORBA::is_nil(anArgOTrsf)) {
               CORBA::String_var anArgOTrsfEntry = anArgOTrsf->GetEntry();
-              Handle(GEOM_Object) anArgOTrsfImpl = _impl->GetObject(anArgOTrsf->GetStudyID(), anArgOTrsfEntry);
-              Handle(GEOM_Function) anArgOTrsfFun = anArgOTrsfImpl->GetLastFunction();
+              Handle(::GEOM_BaseObject) anArgOTrsfImpl = _impl->GetObject(anArgOTrsf->GetStudyID(), anArgOTrsfEntry);
+              Handle(::GEOM_Function) anArgOTrsfFun = anArgOTrsfImpl->GetLastFunction();
               anArgOTrsfFun->SetDescription("");
               aSubO = aShapesOp->GetInPlace(theObject, anArgOTrsf);
             }
@@ -1736,8 +1875,8 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapes(SALOMEDS::Study_ptr     theStu
   aResParts->length(nb);
   if (nb > 0)
   {
-    Handle(GEOM_Object) aMainObj = _impl->GetObject(theObject->GetStudyID(), theObject->GetEntry());
-    Handle(GEOM_Function) aFunction = aMainObj->GetLastFunction();
+    Handle(::GEOM_BaseObject) aMainObj = _impl->GetObject(theObject->GetStudyID(), theObject->GetEntry());
+    Handle(::GEOM_Function) aFunction = aMainObj->GetLastFunction();
     GEOM::TPythonDump pd (aFunction, true);
     pd <<"[";
     int i = 0, j = 0;
@@ -1752,8 +1891,8 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapes(SALOMEDS::Study_ptr     theStu
       anObjEntryMap.insert(anEntry);
       aResParts[nbRes++] = anObj;
       // clear python dump of object
-      Handle(GEOM_Object) aGeomObj = _impl->GetObject(anObj->GetStudyID(), anEntry);
-      Handle(GEOM_Function) anObjFun = aGeomObj->GetLastFunction();
+      Handle(::GEOM_BaseObject) aGeomObj = _impl->GetObject(anObj->GetStudyID(), anEntry);
+      Handle(::GEOM_Function)   anObjFun = aGeomObj->GetLastFunction();
       if ( !anObjFun.IsNull() )
         anObjFun->SetDescription( "" );
       if ( j > 0 )
@@ -1768,13 +1907,13 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapes(SALOMEDS::Study_ptr     theStu
       GEOM::GEOM_Object_var anObj = theArgs[ i ];
       if (CORBA::is_nil(anObj))
         continue;
-      Handle(GEOM_Object) aGeomObj = _impl->GetObject(anObj->GetStudyID(), anObj->GetEntry());
+      Handle(::GEOM_BaseObject) aGeomObj = _impl->GetObject(anObj->GetStudyID(), anObj->GetEntry());
       if ( j > 0 )
         pd << ", ";
       pd << aGeomObj;
       j++;
     }
-    pd <<"]" << ", " <<"geompy.GEOM.";
+    pd <<"]" << ", " <<"GEOM.";
     switch (theFindMethod) {
     case GEOM::FSM_GetInPlace:
       pd << "FSM_GetInPlace"; break;
@@ -1822,6 +1961,9 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapesOneLevel (SALOMEDS::Study_ptr
   GEOM::GEOM_IGroupOperations_var    aGroupOp = GetIGroupOperations(theStudy->StudyId());
   GEOM::GEOM_ITransformOperations_var aTrsfOp = GetITransformOperations(theStudy->StudyId());
 
+  PortableServer::Servant aServant = _poa->reference_to_servant(aTrsfOp.in());
+  GEOM_ITransformOperations_i*      aTrsfOpSv = dynamic_cast<GEOM_ITransformOperations_i*>(aServant);
+
   // Reconstruct published sub-shapes
   SALOMEDS::ChildIterator_var it = theStudy->NewChildIterator(theOldSO);
 
@@ -1862,11 +2004,11 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapesOneLevel (SALOMEDS::Study_ptr
         case GEOM::FSM_MultiTransformed:
           {
             // Only for Multi-transformations
-            GEOM::GEOM_Object_var anArgOTrsf = aTrsfOp->TransformLikeOtherCopy(anOldSubO, theNewO);
+            GEOM::GEOM_Object_var anArgOTrsf = aTrsfOpSv->TransformLikeOtherCopy(anOldSubO, theNewO);
             if (!CORBA::is_nil(anArgOTrsf)) {
               CORBA::String_var anArgOTrsfEntry = anArgOTrsf->GetEntry();
-              Handle(GEOM_Object) anArgOTrsfImpl = _impl->GetObject(anArgOTrsf->GetStudyID(), anArgOTrsfEntry);
-              Handle(GEOM_Function) anArgOTrsfFun = anArgOTrsfImpl->GetLastFunction();
+              Handle(::GEOM_BaseObject) anArgOTrsfImpl = _impl->GetObject(anArgOTrsf->GetStudyID(), anArgOTrsfEntry);
+              Handle(::GEOM_Function) anArgOTrsfFun = anArgOTrsfImpl->GetLastFunction();
               anArgOTrsfFun->SetDescription("");
               aNewSubO = aShapesOp->GetInPlace(theNewO, anArgOTrsf);
             }
@@ -2284,48 +2426,138 @@ GEOM::GEOM_IGroupOperations_ptr GEOM_Gen_i::GetIGroupOperations(CORBA::Long theS
 }
 
 //============================================================================
-// function : GetIAdvancedOperations
+// function : GetIFieldOperations
 // purpose  :
 //============================================================================
-GEOM::GEOM_IAdvancedOperations_ptr GEOM_Gen_i::GetIAdvancedOperations(CORBA::Long theStudyID)
+GEOM::GEOM_IFieldOperations_ptr GEOM_Gen_i::GetIFieldOperations(CORBA::Long theStudyID)
      throw ( SALOME::SALOME_Exception )
 {
   Unexpect aCatch(SALOME_SalomeException);
-  MESSAGE( "GEOM_Gen_i::GetIAdvancedOperations" );
+  MESSAGE( "GEOM_Gen_i::GetIFieldOperations" );
 
   GEOM::GEOM_Gen_ptr engine = _this();
 
-  GEOM_IAdvancedOperations_i* aServant =
-    new GEOM_IAdvancedOperations_i(_poa, engine, _impl->GetIAdvancedOperations(theStudyID));
+  GEOM_IFieldOperations_i* aServant =
+    new GEOM_IFieldOperations_i(_poa, engine, _impl->GetIFieldOperations(theStudyID));
 
   // activate the CORBA servant
-  GEOM::GEOM_IAdvancedOperations_var operations = aServant->_this();
+  GEOM::GEOM_IFieldOperations_var operations = aServant->_this();
   return operations._retn();
 }
 
+//============================================================================
+// function : GetPluginOperations
+// purpose  :
+//============================================================================
+GEOM::GEOM_IOperations_ptr GEOM_Gen_i::GetPluginOperations(CORBA::Long theStudyID,
+                                                           const char* theLibName)
+     throw ( SALOME::SALOME_Exception )
+{
+  Unexpect aCatch(SALOME_SalomeException);
+  MESSAGE( "GEOM_Gen_i::GetPluginOperations" );
+
+  GEOM::GEOM_Gen_ptr engine = _this();
+
+  GEOM::GEOM_IOperations_var operations;
+
+  std::string aLibName = theLibName;
+
+  try {
+    // load plugin library
+    LoadPlugin(aLibName);
+    // create a new operations object, store its ref. in engine
+    if ( myOpCreatorMap.find(aLibName) != myOpCreatorMap.end() ) {
+      GEOM_IOperations_i* aServant = 0;
+      aServant = myOpCreatorMap[aLibName]->Create(_poa, theStudyID, engine, _impl);
+      // activate the CORBA servant
+      if (aServant)
+        operations = aServant->_this();
+    }
+  }
+  catch (SALOME_Exception& S_ex) {
+    THROW_SALOME_CORBA_EXCEPTION(S_ex.what(), SALOME::BAD_PARAM);
+  }
+
+  return operations._retn();
+}
+
+//============================================================================
+// function : LoadPlugin
+// purpose  : load plugin library and retrieve an instance of operations creator
+//============================================================================
+void GEOM_Gen_i::LoadPlugin(const std::string& theLibName)
+{
+  std::string aPlatformLibName;
+#if !defined(WIN32)
+  aPlatformLibName = "lib";
+#endif
+  aPlatformLibName += theLibName;
+#if defined(WIN32)
+  aPlatformLibName += ".dll" ;
+#elif defined(__APPLE__)
+  aPlatformLibName += ".dylib";
+#else
+  aPlatformLibName += ".so";
+#endif
+
+  // check, if corresponding operations are already created
+  if (myOpCreatorMap.find(theLibName) == myOpCreatorMap.end()) {
+    // load plugin library
+    LibHandle libHandle = LoadLib( aPlatformLibName.c_str() );
+    if (!libHandle) {
+      // report any error, if occurred
+#ifndef WIN32
+      throw(SALOME_Exception(dlerror()));
+#else
+      throw(SALOME_Exception(LOCALIZED( "Can't load server geometry plugin library" )));
+#endif
+    }
+
+    // get method, returning operations creator
+    typedef GEOM_GenericOperationsCreator* (*GetOperationsCreator)();
+    GetOperationsCreator procHandle =
+      (GetOperationsCreator)GetProc( libHandle, "GetOperationsCreator" );
+    if (!procHandle) {
+      UnLoadLib(libHandle);
+      throw(SALOME_Exception(LOCALIZED("bad geometry plugin library")));
+    }
+
+    // get operations creator
+    GEOM_GenericOperationsCreator* aCreator = procHandle();
+    if (aCreator) {
+      // map operations creator to a plugin name
+      myOpCreatorMap[theLibName] = aCreator;
+    }
+    else {
+      throw(SALOME_Exception(LOCALIZED("bad geometry plugin library implementation")));
+    }
+  }
+}
+
 //=============================================================================
 /*!
  *  AddSubShape
  */
 //=============================================================================
-GEOM::GEOM_Object_ptr GEOM_Gen_i::AddSubShape (GEOM::GEOM_Object_ptr theMainShape,
+GEOM::GEOM_Object_ptr GEOM_Gen_i::AddSubShape (GEOM::GEOM_Object_ptr   theMainShape,
                                                const GEOM::ListOfLong& theIndices)
 {
   if (CORBA::is_nil(theMainShape) || theIndices.length() < 1)
     return GEOM::GEOM_Object::_nil();
   CORBA::String_var entry = theMainShape->GetEntry();
-  Handle(GEOM_Object) aMainShape = _impl->GetObject(theMainShape->GetStudyID(), entry);
+  Handle(::GEOM_Object) aMainShape = Handle(::GEOM_Object)::DownCast
+    ( _impl->GetObject( theMainShape->GetStudyID(), entry ));
   if (aMainShape.IsNull()) return GEOM::GEOM_Object::_nil();
 
   Handle(TColStd_HArray1OfInteger) anArray = new TColStd_HArray1OfInteger(1, theIndices.length());
-  for(Standard_Integer i = 0; i<theIndices.length(); i++) anArray->SetValue(i+1, theIndices[i]);
+  for(CORBA::ULong i = 0; i<theIndices.length(); i++) anArray->SetValue(i+1, theIndices[i]);
 
-  Handle(GEOM_Object) anObject = _impl->AddSubShape(aMainShape, anArray, true);
+  Handle(::GEOM_Object) anObject = _impl->AddSubShape(aMainShape, anArray, true);
   if(anObject.IsNull()) return GEOM::GEOM_Object::_nil();
 
   TCollection_AsciiString anEntry;
   TDF_Tool::Entry(anObject->GetEntry(), anEntry);
-  return GetObject(anObject->GetDocID(), anEntry.ToCString());
+  return GEOM::GEOM_Object::_narrow( GetObject(anObject->GetDocID(), anEntry.ToCString()));
 }
 
 //=============================================================================
@@ -2333,25 +2565,23 @@ GEOM::GEOM_Object_ptr GEOM_Gen_i::AddSubShape (GEOM::GEOM_Object_ptr theMainShap
  *  RemoveObject
  */
 //=============================================================================
-void GEOM_Gen_i::RemoveObject(GEOM::GEOM_Object_ptr theObject)
+void GEOM_Gen_i::RemoveObject(GEOM::GEOM_BaseObject_ptr theObject)
 {
   CORBA::String_var anEntry = theObject->GetEntry();
-  Handle(GEOM_Object) anObject = _impl->GetObject(theObject->GetStudyID(), anEntry, false);
-  if (anObject.IsNull()) return;
-  _impl->RemoveObject(anObject);
-  return;
+  Handle(::GEOM_BaseObject) anObject = _impl->GetObject(theObject->GetStudyID(), anEntry, false);
+  if (!anObject.IsNull())
+    _impl->RemoveObject(anObject);
 }
 
-
 //=================================================================================
 // function : GetStringFromIOR()
 // purpose  : returns a string that represents  a 'GEOM::GEOM_Object_var'
 //=================================================================================
-char* GEOM_Gen_i::GetStringFromIOR(GEOM::GEOM_Object_ptr theObject) {
+char* GEOM_Gen_i::GetStringFromIOR(GEOM::GEOM_Object_ptr theObject)
+{
   return _orb->object_to_string(theObject);
 }
 
-
 //=================================================================================
 // function : GetIORFromString()
 // purpose  : returns a 'GEOM::GEOM_Object_var' from a string representing it
@@ -2370,22 +2600,49 @@ GEOM::GEOM_Object_ptr GEOM_Gen_i::GetIORFromString(const char* stringIOR) {
 // function : GetObject()
 // purpose  :
 //=================================================================================
-GEOM::GEOM_Object_ptr GEOM_Gen_i::GetObject (CORBA::Long theStudyID, const char* theEntry)
+GEOM::GEOM_BaseObject_ptr GEOM_Gen_i::GetObject (CORBA::Long theStudyID, const char* theEntry)
 {
-  GEOM::GEOM_Object_var obj;
-  Handle(GEOM_Object) handle_object = _impl->GetObject(theStudyID, (char*)theEntry);
+  GEOM::GEOM_BaseObject_var obj;
+  Handle(::GEOM_BaseObject) handle_object = _impl->GetObject(theStudyID, (char*)theEntry);
   if (handle_object.IsNull()) return obj._retn();
 
   TCollection_AsciiString stringIOR = handle_object->GetIOR();
   if (stringIOR.Length() > 1) {
     CORBA::Object_var corba_object = _orb->string_to_object(stringIOR.ToCString());
-    if (!CORBA::is_nil(corba_object)) obj = GEOM::GEOM_Object::_narrow(corba_object);
+    if (!CORBA::is_nil(corba_object)) obj = GEOM::GEOM_BaseObject::_narrow(corba_object);
     return obj._retn();
   }
 
   GEOM::GEOM_Gen_ptr engine = _this();
   //transfer the reference to GEOM_Object_i
-  GEOM_Object_i* servant = new GEOM_Object_i (_poa, engine, handle_object);
+  GEOM_BaseObject_i* servant = 0;
+  switch( handle_object->GetType() ) {
+  case GEOM_FIELD: {
+    servant = new GEOM_Field_i (_poa, engine, Handle(::GEOM_Field)::DownCast( handle_object ));
+    break;
+  }
+  case GEOM_FIELD_STEP: {
+    Handle(::GEOM_FieldStep) step = Handle(::GEOM_FieldStep)::DownCast( handle_object );
+    Handle(::GEOM_Field)    field = step->GetField();
+    int type = ( !field.IsNull() ? field->GetDataType() : 0 );
+    switch( type ) {
+    case GEOM::FDT_Bool:
+      servant = new GEOM_BoolFieldStep_i (_poa, engine, step );
+      break;
+    case GEOM::FDT_Int:
+      servant = new GEOM_IntFieldStep_i (_poa, engine, step );
+      break;
+    case GEOM::FDT_Double:
+      servant = new GEOM_DoubleFieldStep_i (_poa, engine, step );
+      break;
+    default:
+      servant = new GEOM_StringFieldStep_i (_poa, engine, step );
+    }
+    break;
+  }
+  default:
+    servant = new GEOM_Object_i (_poa, engine, Handle(::GEOM_Object)::DownCast( handle_object ));
+  }
   PortableServer::ObjectId_var id = _poa->activate_object(servant);
 
   obj = servant->_this();
@@ -2544,8 +2801,9 @@ char* GEOM_Gen_i::getObjectInfo(CORBA::Long studyId, const char* entry)
     }
   }
 
-  char* anInfo = new char[strlen("Module ") + strlen(ComponentDataType()) + strlen(", ") + strlen(aTypeInfo) + 3];
-  sprintf(anInfo, "Module %s, %s", ComponentDataType(), aTypeInfo);
+  CORBA::String_var compType = ComponentDataType();
+  char* anInfo = new char[strlen("Module ") + strlen(compType.in()) + strlen(", ") + strlen(aTypeInfo) + 3];
+  sprintf(anInfo, "Module %s, %s", compType.in(), aTypeInfo);
 
   char* ret = CORBA::string_dup(anInfo);
   delete [] anInfo;
@@ -2562,6 +2820,480 @@ char* GEOM_Gen_i::getVersion()
 #endif
 }
 
+//=================================================================================
+// function : CreateFolder()
+// purpose  : Creates and returns a new folder object
+//=================================================================================
+SALOMEDS::SObject_ptr GEOM_Gen_i::CreateFolder(const char* theName,
+                                               SALOMEDS::SObject_ptr theFather)
+{
+  SALOMEDS::SObject_var aFolderSO;
+
+  if ( CORBA::is_nil(theFather) ) return aFolderSO._retn();
+
+  SALOMEDS::GenericAttribute_var anAttr;
+  if ( strcmp(theFather->GetFatherComponent()->GetID(), theFather->GetID()) != 0 ) {
+    // not a GEOM component object was selected
+    if ( !theFather->FindAttribute(anAttr, "AttributeLocalID") ) return aFolderSO._retn();
+    SALOMEDS::AttributeLocalID_var aLocalID = SALOMEDS::AttributeLocalID::_narrow(anAttr);
+    if( aLocalID->Value() != 999 ) {
+      // not a Folder object was selected
+      GEOM::GEOM_Object_var aGeomObject = GEOM::GEOM_Object::_narrow(theFather);
+      if ( CORBA::is_nil(aGeomObject) ) return aFolderSO._retn();
+      // another GEOM object was selected, so get GEOM component as father object
+      theFather = theFather->GetFatherComponent();
+    }
+    aLocalID->UnRegister();
+  }
+
+  SALOMEDS::Study_var aStudy = theFather->GetStudy();
+  SALOMEDS::StudyBuilder_var aStudyBuilder( aStudy->NewBuilder() );
+  aFolderSO = aStudyBuilder->NewObject( theFather );
+
+  anAttr = aStudyBuilder->FindOrCreateAttribute(aFolderSO, "AttributeLocalID");
+  SALOMEDS::AttributeLocalID_var aLocalID = SALOMEDS::AttributeLocalID::_narrow(anAttr);
+  aLocalID->SetValue( 999 ); // mark of the "Folder" object
+  aLocalID->UnRegister();
+
+  anAttr = aStudyBuilder->FindOrCreateAttribute(aFolderSO, "AttributeName");
+  SALOMEDS::AttributeName_var aName = SALOMEDS::AttributeName::_narrow(anAttr);
+  aName->SetValue( theName );
+  aName->UnRegister();
+
+  anAttr = aStudyBuilder->FindOrCreateAttribute(aFolderSO, "AttributePixMap");
+  SALOMEDS::AttributePixMap_var aPixMap = SALOMEDS::AttributePixMap::_narrow(anAttr);
+  aPixMap->SetPixMap("ICON_FOLDER");
+  aPixMap->UnRegister();
+
+  // add object to the use case tree
+  // (to support tree representation customization and drag-n-drop)
+  SALOMEDS::UseCaseBuilder_var useCaseBuilder = aStudy->GetUseCaseBuilder();
+  useCaseBuilder->AppendTo( theFather, aFolderSO );
+
+  return aFolderSO._retn();
+}
+
+//=================================================================================
+// function : MoveToFolder()
+// purpose  : Moves GEOM object to the specified folder
+//=================================================================================
+void GEOM_Gen_i::MoveToFolder(GEOM::GEOM_Object_ptr theObject,
+                              SALOMEDS::SObject_ptr theFolder) {
+  GEOM::object_list_var objects = new GEOM::object_list();
+  objects->length( 1 );
+  SALOMEDS::SObject_var aSO = theFolder->GetStudy()->FindObjectID( theObject->GetStudyEntry() );
+  objects[0] = aSO;
+  Move( objects, theFolder, -1 );
+}
+
+//=================================================================================
+// function : MoveListToFolder()
+// purpose  : Moves list of GEOM objects to the specified folder
+//=================================================================================
+void GEOM_Gen_i::MoveListToFolder (const GEOM::ListOfGO& theListOfGO,
+                                   SALOMEDS::SObject_ptr theFolder) {
+  int aLen = theListOfGO.length();
+  GEOM::object_list_var objects = new GEOM::object_list();
+  objects->length( aLen );
+  GEOM::GEOM_Object_var aGO;
+  SALOMEDS::SObject_var aSO;
+  for (int i = 0; i < aLen; i++) {
+    aGO = GEOM::GEOM_Object::_duplicate( theListOfGO[i] );
+    aSO = theFolder->GetStudy()->FindObjectID( aGO->GetStudyEntry() );
+    objects[i] = aSO;
+  }
+  if ( objects->length() > 0 )
+    Move( objects, theFolder, -1 );
+}
+
+//=================================================================================
+// function : Move()
+// purpose  : Moves objects to the specified position.
+//            Is used in the drag-n-drop functionality.
+//=================================================================================
+void GEOM_Gen_i::Move( const GEOM::object_list& what,
+                       SALOMEDS::SObject_ptr where,
+                       CORBA::Long row )
+{
+  if ( CORBA::is_nil( where ) ) return;
+
+  SALOMEDS::Study_var study = where->GetStudy();
+  SALOMEDS::StudyBuilder_var studyBuilder = study->NewBuilder();
+  SALOMEDS::UseCaseBuilder_var useCaseBuilder = study->GetUseCaseBuilder();
+  SALOMEDS::SComponent_var father = where->GetFatherComponent();
+  std::string dataType = father->ComponentDataType();
+  if ( dataType != "GEOM" ) return; // not a GEOM component
+
+  SALOMEDS::SObject_var objAfter;
+  if ( row >= 0 && useCaseBuilder->HasChildren( where ) ) {
+    // insert at given row -> find insertion position
+    SALOMEDS::UseCaseIterator_var useCaseIt = useCaseBuilder->GetUseCaseIterator( where );
+    int i;
+    for ( i = 0; i < row && useCaseIt->More(); i++, useCaseIt->Next() );
+    if ( i == row && useCaseIt->More() ) {
+      objAfter = useCaseIt->Value();
+    }
+  }
+
+  for ( CORBA::ULong i = 0; i < what.length(); i++ ) {
+    SALOMEDS::SObject_var sobj = what[i];
+    if ( CORBA::is_nil( sobj ) ) continue; // skip bad object
+    // insert the object to the use case tree
+    if ( !CORBA::is_nil( objAfter ) )
+      useCaseBuilder->InsertBefore( sobj, objAfter ); // insert at given row
+    else
+      useCaseBuilder->AppendTo( where, sobj );        // append to the end of list
+  }
+}
+
+//=======================================================================
+// function : GetDependencyTree
+// purpose  : Collects dependencies of the given objects from other ones
+//=======================================================================
+SALOMEDS::TMPFile* GEOM_Gen_i::GetDependencyTree( SALOMEDS::Study_ptr theStudy,
+                                                  const GEOM::string_array& theObjectEntries ) {
+  // fill in the tree structure
+  GEOMUtils::TreeModel tree;
+
+  std::string entry;
+  for ( CORBA::ULong i = 0; i < theObjectEntries.length(); i++ ) {
+    // process objects one-by-one
+    entry = theObjectEntries[i].in();
+    GEOM::GEOM_BaseObject_var anObj = GetObject( theStudy->StudyId(), entry.c_str() );
+    if ( anObj->_is_nil() )
+      continue;
+    std::map< std::string, std::set<std::string> > passedEntries;
+    GEOMUtils::LevelsList upLevelList;
+    // get objects from which current one depends on recursively
+    getUpwardDependency( anObj, upLevelList, passedEntries );
+    GEOMUtils::LevelsList downLevelList;
+    // get objects that depends on current one recursively
+    getDownwardDependency( anObj, downLevelList, passedEntries );
+    tree.insert( std::pair<std::string, std::pair<GEOMUtils::LevelsList,GEOMUtils::LevelsList> >(entry, std::pair<GEOMUtils::LevelsList,GEOMUtils::LevelsList>( upLevelList, downLevelList ) ) );
+  }
+
+  // translation the tree into string
+  std::string treeStr;
+  GEOMUtils::ConvertTreeToString( tree, treeStr );
+
+  // put string into stream
+  char* aBuffer = (char*)CORBA::string_dup(treeStr.c_str());
+  int aBufferSize = strlen((char*)aBuffer);
+
+  CORBA::Octet* anOctetBuf =  (CORBA::Octet*)aBuffer;
+
+  SALOMEDS::TMPFile_var aStream = new SALOMEDS::TMPFile(aBufferSize, aBufferSize, anOctetBuf, 1);
+
+  return aStream._retn();
+}
+
+//=======================================================================
+// function : getUpwardDependency
+// purpose  : Collects the entries of objects on that the given one depends
+//=======================================================================
+void GEOM_Gen_i::getUpwardDependency( GEOM::GEOM_BaseObject_ptr gbo,
+                                      GEOMUtils::LevelsList &upLevelList,
+                                      std::map< std::string, std::set<std::string> > &passedEntries,
+                                      int level ) {
+  std::string aGboEntry = gbo->GetEntry();
+  GEOMUtils::NodeLinks anEntries;
+  GEOMUtils::LevelInfo aLevelMap;
+  if ( level > 0 ) {
+    if ( level-1 >= (int)upLevelList.size() ) {
+      // create a new map
+      upLevelList.push_back( aLevelMap );
+    } else {
+      // get the existent map
+      aLevelMap = upLevelList.at(level-1);
+      if ( aLevelMap.count( aGboEntry ) > 0 ) {
+        anEntries = aLevelMap[ aGboEntry ];
+      }
+    }
+  }
+  // get objects on that the current one depends
+  GEOM::ListOfGBO_var depList = gbo->GetDependency();
+  std::string aDepEntry;
+  for( CORBA::ULong j = 0; j < depList->length(); j++ ) {
+    if ( depList[j]->_is_nil() )
+      continue;
+    aDepEntry = depList[j]->GetEntry();
+    if ( passedEntries.count( aGboEntry ) > 0 &&
+         passedEntries[aGboEntry].count( aDepEntry ) > 0 ) {
+      //avoid checking the passed objects
+      continue;
+    }
+    passedEntries[aGboEntry].insert( aDepEntry );
+    if ( level > 0 ) {
+      anEntries.push_back( aDepEntry );
+    }
+    // get dependencies recursively
+    getUpwardDependency(depList[j], upLevelList, passedEntries, level+1);
+  }
+  if ( level > 0 ) {
+    aLevelMap.insert( std::pair<std::string, GEOMUtils::NodeLinks>(aGboEntry, anEntries) );
+    upLevelList[level-1] = aLevelMap;
+  }
+}
+
+//=======================================================================
+// function : getDownwardDependency
+// purpose  : Collects the entries of objects that depends on the given one
+//=======================================================================
+void GEOM_Gen_i::getDownwardDependency( GEOM::GEOM_BaseObject_ptr gbo,
+                                        GEOMUtils::LevelsList &downLevelList,
+                                        std::map< std::string, std::set<std::string> > &passedEntries,
+                                        int level ) {
+  std::string aGboEntry = gbo->GetEntry();
+  Handle(TDocStd_Document) aDoc = GEOM_Engine::GetEngine()->GetDocument(gbo->GetStudyID());
+  Handle(TDataStd_TreeNode) aNode, aRoot;
+  Handle(::GEOM_Function) aFunction;
+  if (aDoc->Main().FindAttribute(GEOM_Function::GetFunctionTreeID(), aRoot)) {
+    // go through the whole OCAF tree
+    TDataStd_ChildNodeIterator Itr( aRoot );
+    for (; Itr.More(); Itr.Next()) {
+      aNode = Itr.Value();
+      aFunction = GEOM_Function::GetFunction(aNode->Label());
+      if (aFunction.IsNull()) {
+        continue;
+      }
+      TDF_Label aLabel  = aFunction->GetOwnerEntry();
+      if(aLabel.IsNull()) continue;
+      TCollection_AsciiString anEntry;
+      TDF_Tool::Entry(aLabel, anEntry);
+      GEOM::GEOM_BaseObject_var geomObj = GetObject( gbo->GetStudyID(), anEntry.ToCString() );
+      if( CORBA::is_nil( geomObj ) )
+        continue;
+      // get dependencies for current object in the tree
+      GEOM::ListOfGBO_var depList = geomObj->GetDependency();
+      if( depList->length() == 0 )
+        continue;
+      std::string aGoEntry = geomObj->GetEntry();
+      // go through dependencies of current object to check whether it depends on the given object
+      for( CORBA::ULong i = 0; i < depList->length(); i++ ) {
+        if ( depList[i]->_is_nil() )
+          continue;
+        if ( depList[i]->_is_equivalent( gbo ) ) {
+          // yes, the current object depends on the given object
+          if ( passedEntries.count( aGoEntry ) > 0 &&
+               passedEntries[aGoEntry].count( aGboEntry ) > 0 ) {
+            //avoid checking the passed objects
+            continue;
+          }
+          passedEntries[aGoEntry].insert( aGboEntry );
+          GEOMUtils::NodeLinks anEntries;
+          GEOMUtils::LevelInfo aLevelMap;
+          anEntries.push_back( aGboEntry );
+          if ( level >= (int)downLevelList.size() ) {
+            downLevelList.push_back( aLevelMap );
+          } else {
+            aLevelMap = downLevelList.at(level);
+            if ( aLevelMap.count( aGoEntry ) > 0 ) {
+              anEntries = aLevelMap[ aGoEntry ];
+            }
+          }
+          aLevelMap.insert( std::pair<std::string, GEOMUtils::NodeLinks>(aGoEntry, anEntries) );
+          downLevelList[level] = aLevelMap;
+          // get dependencies of the current object recursively
+          getDownwardDependency(geomObj, downLevelList, passedEntries, level+1);
+          break;
+        }
+      }
+    }
+  }
+}
+
+//==============================================================================
+// function : GetEntriesToReduceStudy
+// purpose  : Fills 3 lists that is used to clean study of redundant objects
+//==============================================================================
+void GEOM_Gen_i::GetEntriesToReduceStudy(SALOMEDS::Study_ptr theStudy,
+                                         GEOM::string_array& theSelectedEntries,
+                                         GEOM::string_array& theParentEntries,
+                                         GEOM::string_array& theSubEntries,
+                                         GEOM::string_array& theOtherEntries)
+{
+  std::set<std::string> aSelected, aParents, aChildren, anOthers;
+  for ( CORBA::ULong i = 0; i < theSelectedEntries.length(); i++ ) {
+    aSelected.insert( CORBA::string_dup( theSelectedEntries[i] ) );
+  }
+
+  Handle(TDocStd_Document) aDoc = GEOM_Engine::GetEngine()->GetDocument(theStudy->StudyId());
+  Handle(TDataStd_TreeNode) aNode, aRoot;
+  Handle(::GEOM_Function) aFunction;
+  if (aDoc->Main().FindAttribute(GEOM_Function::GetFunctionTreeID(), aRoot)) {
+    // go through the whole OCAF tree
+    TDF_Label aLabel;
+    std::string anEntry;
+    TCollection_AsciiString anAsciiEntry;
+    TDataStd_ChildNodeIterator Itr( aRoot );
+    for (; Itr.More(); Itr.Next()) {
+      aNode = Itr.Value();
+      aFunction = GEOM_Function::GetFunction(aNode->Label());
+      if (aFunction.IsNull()) {
+        continue;
+      }
+      aLabel = aFunction->GetOwnerEntry();
+      if(aLabel.IsNull())
+        continue;
+      TDF_Tool::Entry(aLabel, anAsciiEntry);
+      anEntry = anAsciiEntry.ToCString();
+      GEOM::GEOM_BaseObject_var geomObj = GetObject( theStudy->StudyId(), anEntry.c_str() );
+      if( CORBA::is_nil( geomObj ) )
+        continue;
+
+      if ( aSelected.count( anEntry ) > 0 &&
+           aParents.count( anEntry ) == 0 ) {
+        includeParentDependencies( geomObj, aSelected, aParents, aChildren, anOthers );
+      } else if ( aParents.count( anEntry ) == 0 &&
+                  aChildren.count( anEntry ) == 0 ) {
+        anOthers.insert( geomObj->GetEntry() );
+      }
+    }
+
+    std::set<std::string>::iterator it;
+    std::set<std::string>::iterator foundIt;
+    TCollection_AsciiString stringIOR;
+    GEOM::GEOM_Object_var geomObj;
+
+    // filling list of sub-objects
+    for ( it = aSelected.begin(); it != aSelected.end(); ++it ) {
+      includeSubObjects( theStudy, *it, aSelected, aParents, aChildren, anOthers );
+    }
+
+    // if some selected object is not a main shape,
+    // we move it's main shapes into 'selected' list,
+    // because they could not be modified anyhow.
+    std::set<std::string> aToBeInSelected;
+    for ( it = aSelected.begin(); it != aSelected.end(); ++it ) {
+      Handle(::GEOM_BaseObject) handle_object = _impl->GetObject( theStudy->StudyId(), (*it).c_str(), false);
+      if ( handle_object.IsNull() )
+        continue;
+
+      stringIOR = handle_object->GetIOR();
+      if ( !stringIOR.Length() > 1 )
+        continue;
+
+      geomObj = GetIORFromString( stringIOR.ToCString() );
+      while ( !geomObj->IsMainShape() ) {
+        geomObj = geomObj->GetMainShape();
+        anEntry = geomObj->GetEntry();
+
+        foundIt = aParents.find( anEntry );
+        if ( foundIt != aParents.end() )
+          aParents.erase( foundIt );
+
+        foundIt = aChildren.find( anEntry );
+        if ( foundIt != aChildren.end() )
+          aChildren.erase( foundIt );
+
+        foundIt = anOthers.find( anEntry );
+        if ( foundIt != anOthers.end() )
+          anOthers.erase( foundIt );
+
+        aToBeInSelected.insert( anEntry );
+      }
+    }
+    aSelected.insert( aToBeInSelected.begin(), aToBeInSelected.end() );
+
+    // fill the CORBA arrays with values from sets
+    int i;
+    theSelectedEntries.length( aSelected.size() );
+    for ( i = 0, it = aSelected.begin(); it != aSelected.end(); ++it, i++ )
+      theSelectedEntries[i]  = CORBA::string_dup( (*it).c_str() );
+    theParentEntries.length( aParents.size() );
+    for ( i = 0, it = aParents.begin(); it != aParents.end(); ++it, i++ )
+      theParentEntries[i]  = CORBA::string_dup( (*it).c_str() );
+    theSubEntries.length( aChildren.size() );
+    for ( i = 0, it = aChildren.begin(); it != aChildren.end(); ++it, i++ )
+      theSubEntries[i]  = CORBA::string_dup( (*it).c_str() );
+    theOtherEntries.length( anOthers.size() );
+    for ( i = 0, it = anOthers.begin(); it != anOthers.end(); ++it, i++ )
+      theOtherEntries[i]  = CORBA::string_dup( (*it).c_str() );
+  }
+}
+
+//==============================================================================
+// function : includeParentDependencies
+// purpose  :
+//==============================================================================
+void GEOM_Gen_i::includeParentDependencies(GEOM::GEOM_BaseObject_ptr geomObj,
+                                           std::set<std::string>& aSelected,
+                                           std::set<std::string>& aParents,
+                                           std::set<std::string>& aChildren,
+                                           std::set<std::string>& anOthers)
+{
+  std::string anEntry = geomObj->GetEntry();
+  if ( aSelected.count( anEntry ) == 0 ) {
+    aParents.insert( anEntry );
+    std::set<std::string>::iterator it;
+    it = aChildren.find( anEntry );
+    if ( it != aChildren.end() )
+      aChildren.erase( it );
+    it = anOthers.find( anEntry );
+    if ( it != anOthers.end() )
+      anOthers.erase( it );
+  }
+  // get dependencies for current object in the tree
+  GEOM::ListOfGBO_var depList = geomObj->GetDependency();
+  if( depList->length() == 0 )
+    return;
+  // go through dependencies of current object to check whether it depends on the given object
+  std::string aDepEntry;
+  for( CORBA::ULong i = 0; i < depList->length(); i++ ) {
+    aDepEntry = depList[i]->GetEntry();
+    if ( depList[i]->_is_nil() ||
+         aDepEntry == anEntry ||             // skip self-depending
+         aSelected.count( aDepEntry ) > 0 || // skip selected objects
+         aParents.count( aDepEntry ) > 0     // skip already processed objects
+         )
+      continue;
+    includeParentDependencies( depList[i], aSelected, aParents, aChildren, anOthers );
+  }
+}
+
+//==============================================================================
+// function : includeSubObjects
+// purpose  :
+//==============================================================================
+void GEOM_Gen_i::includeSubObjects(SALOMEDS::Study_ptr theStudy,
+                                   const std::string& aSelectedEntry,
+                                   std::set<std::string>& aSelected,
+                                   std::set<std::string>& aParents,
+                                   std::set<std::string>& aChildren,
+                                   std::set<std::string>& anOthers)
+{
+  std::set<std::string>::iterator foundIt;
+  Handle(::GEOM_BaseObject) handle_object = _impl->GetObject( theStudy->StudyId(), aSelectedEntry.c_str(), false);
+  if ( handle_object.IsNull() )
+    return;
+
+  Handle(::GEOM_Function) aShapeFun = handle_object->GetFunction(1);
+  if ( aShapeFun.IsNull() || !aShapeFun->HasSubShapeReferences() )
+    return;
+
+  const TDataStd_ListOfExtendedString& aListEntries = aShapeFun->GetSubShapeReferences();
+  if ( aListEntries.IsEmpty() )
+    return;
+
+  TDataStd_ListIteratorOfListOfExtendedString anIt (aListEntries);
+  for ( ; anIt.More(); anIt.Next() ) {
+    TCollection_ExtendedString aSubEntry = anIt.Value();
+    Standard_Integer aStrLen = aSubEntry.LengthOfCString();
+    char* aSubEntryStr = new char[aStrLen+1];
+    aSubEntry.ToUTF8CString( aSubEntryStr );
+    foundIt = aParents.find( aSubEntryStr );
+    if ( foundIt == aParents.end() ) { // add to sub-objects if it is not in parents list
+      foundIt = aSelected.find( aSubEntryStr );
+      if ( foundIt == aSelected.end() ) { // add to sub-objects if it is not in selected list
+            aChildren.insert( aSubEntryStr );
+            foundIt = anOthers.find( aSubEntryStr );
+            if ( foundIt != anOthers.end() )
+              anOthers.erase( foundIt );
+      }
+    }
+    includeSubObjects( theStudy, aSubEntryStr, aSelected, aParents, aChildren, anOthers );
+  }
+}
 //=====================================================================================
 // EXPORTED METHODS
 //=====================================================================================