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Merge branch 'BR_EDF_2018_Lot1'
[modules/shaper.git] / src / XGUI / XGUI_Workshop.cpp
index ab326f3dfefa513769da7b8ac4bfb90c5d7e36c5..0a1b1570ca901a64d408103893edbf3050ec8f3b 100755 (executable)
@@ -1,20 +1,47 @@
-// Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
+// Copyright (C) 2014-2017  CEA/DEN, EDF R&D
+//
+// 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, 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
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or
+// email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
+//
 
-//#include "XGUI_Constants.h"
 #include "XGUI_Workshop.h"
 
 #include "XGUI_ActionsMgr.h"
+#include "XGUI_ActiveControlMgr.h"
+#include "XGUI_ActiveControlSelector.h"
+#include "XGUI_MenuMgr.h"
 #include "XGUI_ColorDialog.h"
+#include "XGUI_DeflectionDialog.h"
+#include "XGUI_TransparencyWidget.h"
 #include "XGUI_ContextMenuMgr.h"
 #include "XGUI_Displayer.h"
 #include "XGUI_ErrorDialog.h"
 #include "XGUI_ErrorMgr.h"
+#include "XGUI_FacesPanel.h"
+#include "XGUI_FacesPanelSelector.h"
 #include "XGUI_ModuleConnector.h"
 #include "XGUI_ObjectsBrowser.h"
 #include "XGUI_OperationMgr.h"
 #include "XGUI_PropertyPanel.h"
+#include "XGUI_PropertyPanelSelector.h"
+#include "XGUI_PropertyDialog.h"
 #include "XGUI_SalomeConnector.h"
 #include "XGUI_Selection.h"
+#include "XGUI_SelectionActivate.h"
 #include "XGUI_SelectionMgr.h"
 #include "XGUI_Tools.h"
 #include "XGUI_ViewerProxy.h"
@@ -22,6 +49,8 @@
 #include <XGUI_CustomPrs.h>
 #include <XGUI_HistoryMenu.h>
 #include <XGUI_QtEvents.h>
+#include <XGUI_DataModel.h>
+#include <XGUI_InspectionPanel.h>
 
 #ifndef HAVE_SALOME
 #include <AppElements_Button.h>
 #include <AppElements_Workbench.h>
 #endif
 
+#include <Config_XMLReader.h>
+
 #include <ModelAPI_AttributeDocRef.h>
 #include <ModelAPI_AttributeIntArray.h>
+#include <ModelAPI_AttributeDouble.h>
 #include <ModelAPI_Data.h>
 #include <ModelAPI_Events.h>
 #include <ModelAPI_Feature.h>
 #include <ModelAPI_Object.h>
 #include <ModelAPI_ResultBody.h>
+#include <ModelAPI_ResultCompSolid.h>
 #include <ModelAPI_ResultConstruction.h>
 #include <ModelAPI_ResultGroup.h>
 #include <ModelAPI_ResultParameter.h>
+#include <ModelAPI_ResultField.h>
 #include <ModelAPI_Session.h>
 #include <ModelAPI_Validator.h>
-#include <ModelAPI_ResultCompSolid.h>
 #include <ModelAPI_Tools.h>
 
 //#include <PartSetPlugin_Part.h>
 
 #include <Events_Loop.h>
-#include <Events_Error.h>
+#include <Events_InfoMessage.h>
 #include <Events_LongOp.h>
 
-#include <ModuleBase_FilterFactory.h>
 #include <ModuleBase_IModule.h>
 #include <ModuleBase_IViewer.h>
 #include <ModuleBase_Operation.h>
 #include <ModuleBase_OperationAction.h>
 #include <ModuleBase_PagedContainer.h>
 #include <ModuleBase_WidgetValidated.h>
+#include <ModuleBase_ModelWidget.h>
+#include <ModuleBase_ResultPrs.h>
+#include <ModuleBase_ActionIntParameter.h>
 
 #include <Config_Common.h>
 #include <Config_FeatureMessage.h>
 #include <Config_ModuleReader.h>
 #include <Config_PointerMessage.h>
 #include <Config_PropManager.h>
-#include <Config_SelectionFilterMessage.h>
+#include <Config_DataModelReader.h>
+#include <Config_Translator.h>
+#include <Config_WidgetAPI.h>
+#include <Config_Keywords.h>
 
 #include <SUIT_ResourceMgr.h>
 
+#include <AIS_Trihedron.hxx>
+#ifdef BEFORE_TRIHEDRON_PATCH
+#include <AIS_Point.hxx>
+#include <AIS_Axis.hxx>
+#endif
+
 #include <QApplication>
 #include <QFileDialog>
 #include <QMessageBox>
 
 #include <iterator>
 
+#ifdef TINSPECTOR
+#include <CDF_Session.hxx>
+#include <CDF_Application.hxx>
+#include <inspector/TInspector_Communicator.hxx>
+#include <inspector/VInspector_CallBack.hxx>
+static TInspector_Communicator* MyTCommunicator;
+static Handle(VInspector_CallBack) MyVCallBack;
+
+#endif
+
 #ifdef _DEBUG
 #include <QDebug>
 #include <iostream>
 #include <dlfcn.h>
 #endif
 
+//#define DEBUG_WITH_MESSAGE_REPORT
 
 QString XGUI_Workshop::MOVE_TO_END_COMMAND = QObject::tr("Move to the end");
 
 //#define DEBUG_DELETE
 //#define DEBUG_FEATURE_NAME
+//#define DEBUG_CLEAN_HISTORY
 
+//******************************************************
 XGUI_Workshop::XGUI_Workshop(XGUI_SalomeConnector* theConnector)
     : QObject(),
       myCurrentDir(QString()),
       myModule(NULL),
       mySalomeConnector(theConnector),
       myPropertyPanel(0),
+      myInspectionPanel(0),
+      myFacesPanel(0),
       myObjectBrowser(0),
       myDisplayer(0)
+      //myViewerSelMode(TopAbs_FACE)
 {
+  mySelector = new XGUI_SelectionMgr(this);
+  myModuleConnector = new XGUI_ModuleConnector(this);
+  myOperationMgr = new XGUI_OperationMgr(this, 0);
+  ModuleBase_IWorkshop* aWorkshop = moduleConnector();
+  // Has to be defined first in order to get errors and messages from other components
+  myEventsListener = new XGUI_WorkshopListener(aWorkshop);
+  mySelectionActivate = new XGUI_SelectionActivate(aWorkshop);
+
+  SUIT_ResourceMgr* aResMgr = ModuleBase_Preferences::resourceMgr();
 #ifndef HAVE_SALOME
   myMainWindow = new AppElements_MainWindow();
 
-  SUIT_ResourceMgr* aResMgr = ModuleBase_Preferences::resourceMgr();
   bool aCloc = aResMgr->booleanValue("language", "locale", true);
   if (aCloc)
     QLocale::setDefault( QLocale::c() );
-  else 
+  else
     QLocale::setDefault( QLocale::system() );
 #endif
+  QString aPath = Config_XMLReader::pluginConfigFile().c_str();
+  QDir aDir(aPath);
+
+  // Load translations
+  QStringList aLangs;
+  aLangs << "*_en.ts"; // load by default eng translations
+  QString aCurrLang = aResMgr->stringValue("language", "language", "en");
+  if(aCurrLang != "en") {
+    aLangs << "*_" + aCurrLang + ".ts"; // then replace with translated files
+  }
+
+  foreach(QString aLang, aLangs) {
+    QStringList aFilters;
+    aFilters << aLang;
+    QStringList aTsFiles = aDir.entryList(aFilters, QDir::Files);
+    foreach(QString aFileName, aTsFiles) {
+      Config_Translator::load(aFileName.toStdString());
+    }
+  }
+
+  myDataModelXMLReader = new Config_DataModelReader();
+  //myDataModelXMLReader->readAll();
 
   myDisplayer = new XGUI_Displayer(this);
 
-  mySelector = new XGUI_SelectionMgr(this);
   connect(mySelector, SIGNAL(selectionChanged()), this, SLOT(updateCommandStatus()));
 
-  myOperationMgr = new XGUI_OperationMgr(this, 0);
   myActionsMgr = new XGUI_ActionsMgr(this);
+  myActiveControlMgr = new XGUI_ActiveControlMgr(myModuleConnector);
+  myMenuMgr = new XGUI_MenuMgr(this);
   myErrorDlg = new XGUI_ErrorDialog(QApplication::desktop());
   myContextMenuMgr = new XGUI_ContextMenuMgr(this);
   connect(myContextMenuMgr, SIGNAL(actionTriggered(const QString&, bool)), this,
           SLOT(onContextMenuCommand(const QString&, bool)));
 
   myViewerProxy = new XGUI_ViewerProxy(this);
-  connect(myViewerProxy, SIGNAL(selectionChanged()),
-          myActionsMgr,  SLOT(updateOnViewSelection()));
-
-  myModuleConnector = new XGUI_ModuleConnector(this);
+  //connect(myViewerProxy, SIGNAL(selectionChanged()),
+  //        myActionsMgr,  SLOT(updateOnViewSelection()));
 
-  ModuleBase_IWorkshop* aWorkshop = moduleConnector();
   myOperationMgr->setWorkshop(aWorkshop);
 
   myErrorMgr = new XGUI_ErrorMgr(this, aWorkshop);
-  myEventsListener = new XGUI_WorkshopListener(aWorkshop);
 
-  connect(myOperationMgr, SIGNAL(operationStarted(ModuleBase_Operation*)), 
-          SLOT(onOperationStarted(ModuleBase_Operation*)));
   connect(myOperationMgr, SIGNAL(operationResumed(ModuleBase_Operation*)),
           SLOT(onOperationResumed(ModuleBase_Operation*)));
   connect(myOperationMgr, SIGNAL(operationStopped(ModuleBase_Operation*)),
           SLOT(onOperationStopped(ModuleBase_Operation*)));
-  connect(myOperationMgr, SIGNAL(operationCommitted(ModuleBase_Operation*)), 
+  connect(myOperationMgr, SIGNAL(operationCommitted(ModuleBase_Operation*)),
           SLOT(onOperationCommitted(ModuleBase_Operation*)));
-  connect(myOperationMgr, SIGNAL(operationAborted(ModuleBase_Operation*)), 
+  connect(myOperationMgr, SIGNAL(operationAborted(ModuleBase_Operation*)),
           SLOT(onOperationAborted(ModuleBase_Operation*)));
 
 #ifndef HAVE_SALOME
@@ -172,40 +256,73 @@ XGUI_Workshop::XGUI_Workshop(XGUI_SalomeConnector* theConnector)
   onTrihedronVisibilityChanged(true);
 #endif
 
-  connect(this, SIGNAL(errorOccurred(const QString&)), myErrorDlg, SLOT(addError(const QString&)));
-  connect(myEventsListener, SIGNAL(errorOccurred(const QString&)),
-          myErrorDlg, SLOT(addError(const QString&)));
+  connect(myEventsListener, SIGNAL(errorOccurred(std::shared_ptr<Events_InfoMessage>)),
+          myErrorDlg, SLOT(addError(std::shared_ptr<Events_InfoMessage>)));
 
   //Config_PropManager::registerProp("Visualization", "object_default_color", "Object color",
   //                                 Config_Prop::Color, "225,225,225");
 
-  Config_PropManager::registerProp("Visualization", "result_body_color", "Body color",
+  Config_PropManager::registerProp("Visualization", "result_body_color", "Result color",
                                    Config_Prop::Color, ModelAPI_ResultBody::DEFAULT_COLOR());
   Config_PropManager::registerProp("Visualization", "result_group_color", "Group color",
                                    Config_Prop::Color, ModelAPI_ResultGroup::DEFAULT_COLOR());
-  Config_PropManager::registerProp("Visualization", "result_construction_color", "Construction color",
-                                   Config_Prop::Color, ModelAPI_ResultConstruction::DEFAULT_COLOR());
+  Config_PropManager::registerProp("Visualization", "result_construction_color",
+                                   "Construction color",
+                                   Config_Prop::Color,
+                                   ModelAPI_ResultConstruction::DEFAULT_COLOR());
   Config_PropManager::registerProp("Visualization", "result_part_color", "Part color",
                                    Config_Prop::Color, ModelAPI_ResultPart::DEFAULT_COLOR());
+  Config_PropManager::registerProp("Visualization", "result_field_color", "Field color",
+                                   Config_Prop::Color, ModelAPI_ResultField::DEFAULT_COLOR());
+
+  if (ModuleBase_Preferences::resourceMgr()->booleanValue("Viewer", "face-selection", true))
+    myViewerSelMode.append(TopAbs_FACE);
+  if (ModuleBase_Preferences::resourceMgr()->booleanValue("Viewer", "edge-selection", true))
+    myViewerSelMode.append(TopAbs_EDGE);
+  if (ModuleBase_Preferences::resourceMgr()->booleanValue("Viewer", "vertex-selection", true))
+    myViewerSelMode.append(TopAbs_VERTEX);
+  //IMP: an attempt to use result selection with other selection modes
+  myViewerSelMode.append(ModuleBase_ResultPrs::Sel_Result);//TopAbs_VERTEX);
+  myViewerSelMode.append(TopAbs_COMPSOLID);
 }
 
 //******************************************************
 XGUI_Workshop::~XGUI_Workshop(void)
 {
+#ifdef _DEBUG
+#ifdef MISSED_TRANSLATION
+  // Save Missed translations
+  Config_Translator::saveMissedTranslations();
+#endif
+#endif
+
   delete myDisplayer;
+  delete myDataModelXMLReader;
 }
 
 //******************************************************
 void XGUI_Workshop::startApplication()
 {
+  //Initialize event listening
+  myEventsListener->initializeEventListening();
+
+  myDataModelXMLReader->readAll();
   initMenu();
 
   Config_PropManager::registerProp("Plugins", "default_path", "Default Path",
                                    Config_Prop::Directory, "");
 
-  //Initialize event listening
-  myEventsListener->initializeEventListening();
+  std::string aDir = Config_XMLReader::resourcesConfigFile();
+  Config_PropManager::registerProp("Plugins", "import_initial_path", "Import initial directory",
+                                   Config_Prop::Directory, aDir);
+
+#ifdef _DEBUG
+  Config_PropManager::registerProp("Plugins", "create_part_by_start", "Create Part by Start",
+    Config_Prop::Boolean, "false");
 
+  Config_PropManager::registerProp("Plugins", "show_hide_faces", "Show Hide Faces (on the right)",
+    Config_Prop::Boolean, "false");
+#endif
   registerValidators();
 
   // Calling of  loadCustomProps before activating module is required
@@ -217,7 +334,7 @@ void XGUI_Workshop::startApplication()
   myMainWindow->show();
   updateCommandStatus();
 #endif
-  
+
   onNew();
 
   myViewerProxy->connectViewProxy();
@@ -225,11 +342,19 @@ void XGUI_Workshop::startApplication()
           SLOT(onTrihedronVisibilityChanged(bool)));
 
   emit applicationStarted();
+
+#ifdef _DEBUG
+  bool aNewPart = Config_PropManager::boolean("Plugins", "create_part_by_start");
+  if (aNewPart) {
+      module()->launchOperation("Part", false); // PartSetPlugin_Part::ID()
+  }
+#endif
 }
 
+//******************************************************
 void XGUI_Workshop::activateModule()
 {
-  myModule->activateSelectionFilters();
+  selectionActivate()->updateSelectionFilters();
 
   connect(myDisplayer, SIGNAL(objectDisplayed(ObjectPtr, AISObjectPtr)),
     myModule, SLOT(onObjectDisplayed(ObjectPtr, AISObjectPtr)));
@@ -238,21 +363,18 @@ void XGUI_Workshop::activateModule()
 
   updateCommandStatus();
 
+  // TODO: get default selection mode
+
   // activate visualized objects in the viewer
-  XGUI_Displayer* aDisplayer = displayer();
-  QObjectPtrList aDisplayed = aDisplayer->displayedObjects();
-  QIntList aModes;
-  module()->activeSelectionModes(aModes);
-  aDisplayer->activateObjects(aModes, aDisplayed);
+  activateObjectsSelection(displayer()->displayedObjects());
   myOperationMgr->activate();
 }
 
+//******************************************************
 void XGUI_Workshop::deactivateModule()
 {
-  myModule->deactivateSelectionFilters();
-
   // remove internal displayer filter
-  displayer()->deactivateSelectionFilters();
+  displayer()->deactivateSelectionFilters(false);
 
   disconnect(myDisplayer, SIGNAL(objectDisplayed(ObjectPtr, AISObjectPtr)),
     myModule, SLOT(onObjectDisplayed(ObjectPtr, AISObjectPtr)));
@@ -262,6 +384,17 @@ void XGUI_Workshop::deactivateModule()
   XGUI_Displayer* aDisplayer = displayer();
   QObjectPtrList aDisplayed = aDisplayer->displayedObjects();
   aDisplayer->deactivateObjects(aDisplayed, true);
+  selectionActivate()->deactivateTrihedronInSelectionModes();
+
+#ifdef BEFORE_TRIHEDRON_PATCH
+  //Handle(AIS_Trihedron) aTrihedron = Handle(AIS_Trihedron)::DownCast(aDisplayer->getTrihedron());
+  /// Trihedron problem: objects stayed in the viewer, should be removed manually
+  /// otherwise in SALOME happens crash by HideAll in the viewer
+  aContext->Remove(aTrihedron->Position(), true);
+  aContext->Remove(aTrihedron->Axis(), true);
+  aContext->Remove(aTrihedron->XAxis(), true);
+  aContext->Remove(aTrihedron->YAxis(), true);
+#endif
 
   myOperationMgr->deactivate();
 }
@@ -276,7 +409,8 @@ void XGUI_Workshop::initMenu()
   QAction* aAction = salomeConnector()->addDesktopCommand("UNDO_CMD", tr("Undo"),
                                                         tr("Undo last command"),
                                                         QIcon(":pictures/undo.png"),
-                                                        QKeySequence::Undo, false, "MEN_DESK_EDIT");
+                                                        QKeySequence::Undo, false,
+                                                        "MEN_DESK_EDIT");
   QString aToolBarTitle = tr( "INF_DESK_TOOLBAR_STANDARD" );
   salomeConnector()->addActionInToolbar( aAction,aToolBarTitle  );
 
@@ -292,20 +426,15 @@ void XGUI_Workshop::initMenu()
   addHistoryMenu(aAction, SIGNAL(updateRedoHistory(const QList<ActionInfo>&)), SLOT(onRedo(int)));
 
   salomeConnector()->addDesktopMenuSeparator("MEN_DESK_EDIT");
-  //aAction = salomeConnector()->addDesktopCommand("REBUILD_CMD", tr("Rebuild"), tr("Rebuild data objects"),
-  //                                            QIcon(":pictures/rebuild.png"), QKeySequence(),
-  //                                            false, "MEN_DESK_EDIT");
-  //salomeConnector()->addActionInToolbar( aAction, aToolBarTitle );
 
-  //connect(aAction, SIGNAL(triggered(bool)), this, SLOT(onRebuild()));
-  //salomeConnector()->addDesktopMenuSeparator("MEN_DESK_EDIT");
-
-  aAction = salomeConnector()->addDesktopCommand("SAVEAS_CMD", tr("Export native..."), tr("Export the current document into a native file"),
+  aAction = salomeConnector()->addDesktopCommand("SAVEAS_CMD", tr("Export native..."),
+                                             tr("Export the current document into a native file"),
                                               QIcon(), QKeySequence(),
                                               false, "MEN_DESK_FILE");
   connect(aAction, SIGNAL(triggered(bool)), this, SLOT(onSaveAs()));
 
-  aAction = salomeConnector()->addDesktopCommand("OPEN_CMD", tr("Import native..."), tr("Import native file"),
+  aAction = salomeConnector()->addDesktopCommand("OPEN_CMD", tr("Import native..."),
+                                              tr("Import native file"),
                                               QIcon(), QKeySequence(),
                                               false, "MEN_DESK_FILE");
   connect(aAction, SIGNAL(triggered(bool)), this, SLOT(onOpen()));
@@ -344,12 +473,6 @@ void XGUI_Workshop::initMenu()
                  SIGNAL(updateRedoHistory(const QList<ActionInfo>&)),
                  SLOT(onRedo(int)));
 
-  //aCommand = aGroup->addFeature("REBUILD_CMD", tr("Rebuild"), tr("Rebuild data objects"),
-  //  QIcon(":pictures/rebuild.png"), QKeySequence());
-  //aCommand->connectTo(this, SLOT(onRebuild()));
-
-  //aCommand->disable();
-
   aCommand = aGroup->addFeature("OPEN_CMD", tr("Open..."), tr("Open a new document"),
                                 QIcon(":pictures/open.png"), QKeySequence::Open);
   aCommand->connectTo(this, SLOT(onOpen()));
@@ -365,6 +488,7 @@ void XGUI_Workshop::initMenu()
 }
 
 #ifndef HAVE_SALOME
+//******************************************************
 AppElements_Workbench* XGUI_Workshop::addWorkbench(const QString& theName)
 {
   AppElements_MainMenu* aMenuBar = myMainWindow->menuObject();
@@ -400,16 +524,46 @@ void XGUI_Workshop::onAcceptActionClicked()
                                                     (anOperationMgr->currentOperation());
     if (aFOperation) {
       //if (errorMgr()->canProcessClick(anAction, aFOperation->feature()))
-      myOperationMgr->onCommitOperation();
+      myOperationMgr->commitOperation();
+    }
+  }
+}
+
+//******************************************************
+void XGUI_Workshop::onAcceptPlusActionClicked()
+{
+  QAction* anAction = dynamic_cast<QAction*>(sender());
+  XGUI_OperationMgr* anOperationMgr = operationMgr();
+  if (anOperationMgr) {
+    ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>
+                                                    (anOperationMgr->currentOperation());
+    if (aFOperation) {
+      if (myOperationMgr->commitOperation())
+        module()->launchOperation(aFOperation->id(), false);
+    }
+  }
+}
+
+//******************************************************
+void XGUI_Workshop::onPreviewActionClicked()
+{
+  ModuleBase_IPropertyPanel* aPanel = propertyPanel();
+  if (aPanel) {
+    ModuleBase_ModelWidget* anActiveWidget = aPanel->activeWidget();
+    if (anActiveWidget && anActiveWidget->getValueState() == ModuleBase_ModelWidget::ModifiedInPP) {
+      anActiveWidget->storeValue();
     }
   }
+  std::shared_ptr<Events_Message> aMsg = std::shared_ptr<Events_Message>(
+                new Events_Message(Events_Loop::eventByName(EVENT_PREVIEW_REQUESTED)));
+  Events_Loop::loop()->send(aMsg);
 }
 
 //******************************************************
 void XGUI_Workshop::deactivateActiveObject(const ObjectPtr& theObject, const bool theUpdateViewer)
 {
   if (!myModule->canActivateSelection(theObject)) {
-    if (myDisplayer->isActive(theObject)) {
+    if (selectionActivate()->isActive(theObject)) {
       QObjectPtrList anObjects;
       anObjects.append(theObject);
       myDisplayer->deactivateObjects(anObjects, theUpdateViewer);
@@ -426,7 +580,7 @@ bool XGUI_Workshop::isFeatureOfNested(const FeaturePtr& theFeature)
     XGUI_SalomeConnector* aSalomeConnector = salomeConnector();
     if (aSalomeConnector->isFeatureOfNested(actionsMgr()->action(aFeatureKind.c_str())))
       aHasNested = true;
-#else 
+#else
     AppElements_MainMenu* aMenuBar = mainWindow()->menuObject();
     AppElements_Command* aCommand = aMenuBar->feature(aFeatureKind.c_str());
     if (aCommand && aCommand->button()->additionalButtonWidget())
@@ -436,45 +590,119 @@ bool XGUI_Workshop::isFeatureOfNested(const FeaturePtr& theFeature)
 }
 
 //******************************************************
-void XGUI_Workshop::onOperationStarted(ModuleBase_Operation* theOperation)
+void XGUI_Workshop::fillPropertyPanel(ModuleBase_Operation* theOperation)
 {
-  setGrantedFeatures(theOperation);
-
-  ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>
-                                                                               (theOperation);
+  ModuleBase_OperationFeature* aFOperation =
+    dynamic_cast<ModuleBase_OperationFeature*>(theOperation);
   if (!aFOperation)
     return;
 
-  if (aFOperation->getDescription()->hasXmlRepresentation()) {  //!< No need for property panel
-    setPropertyPanel(aFOperation);
-    // filling the operation values by the current selection
-    // if the operation can be committed after the controls filling, the method perform should
-    // be stopped. Otherwise unnecessary presentations can be shown(e.g. operation prs in sketch)
-    if (!aFOperation->isEditOperation()) {
-      aFOperation->activateByPreselection();
-      if (operationMgr()->currentOperation() != aFOperation)
+  showPanel(myPropertyPanel);
+  myPropertyPanel->cleanContent();
+
+  QList<ModuleBase_ModelWidget*> aWidgets;
+  if (!module()->createWidgets(theOperation, aWidgets)) {
+    QString aXmlRepr = aFOperation->getDescription()->xmlRepresentation();
+    ModuleBase_WidgetFactory aFactory(aXmlRepr.toStdString(), myModuleConnector);
+    aFactory.createWidget(myPropertyPanel->contentWidget());
+    aWidgets = aFactory.getModelWidgets();
+  }
+
+  // check compatibility of feature and widgets
+  FeaturePtr aFeature = aFOperation->feature();
+  std::string aFeatureKind = aFeature->getKind();
+  foreach (ModuleBase_ModelWidget* aWidget, aWidgets) {
+    if (aWidget->usesAttribute()) {
+      if (!aWidget->attributeID().empty() && !aFeature->attribute(aWidget->attributeID()).get()) {
+        std::string anErrorMsg = "The feature '%1' has no attribute '%2' used by widget '%3'.";
+        Events_InfoMessage("XGUI_Workshop", anErrorMsg)
+          .arg(aFeatureKind).arg(aWidget->attributeID())
+          .arg(aWidget->metaObject()->className()).send();
+        myPropertyPanel->cleanContent();
         return;
+      }
     }
   }
-  updateCommandStatus();
+  // for performance purpose, flush should be done after all controls are filled
+  bool isUpdateFlushed = false;
+  foreach (ModuleBase_ModelWidget* aWidget, aWidgets) {
+    bool isStoreValue = !aFOperation->isEditOperation() &&
+                        !aWidget->getDefaultValue().empty() &&
+                        !aWidget->isComputedDefault();
+    aWidget->setFeature(aFeature, isStoreValue, isUpdateFlushed);
+    if (!isStoreValue)
+      aWidget->restoreValue();
+    aWidget->enableFocusProcessing();
+  }
+  // update visible state of Preview button
+  std::shared_ptr<Config_FeatureMessage> aFeatureInfo;
+#ifdef HAVE_SALOME
+  aFeatureInfo = mySalomeConnector->featureInfo(aFeatureKind.c_str());
+#else
+  AppElements_MainMenu* aMenuBar = mainWindow()->menuObject();
+  AppElements_Command* aCommand = aMenuBar->feature(aFeatureKind.c_str());
+  if (aCommand)
+    aFeatureInfo = aCommand->featureMessage();
+#endif
+  bool anIsAutoPreview = true;
+  if (aFeatureInfo.get())
+    anIsAutoPreview = aFeatureInfo->isAutoPreview();
+  else {
+    std::string aXmlCfg, aDescription;
+    module()->getXMLRepresentation(aFeatureKind, aXmlCfg, aDescription);
+    ModuleBase_WidgetFactory aFactory(aXmlCfg, moduleConnector());
+    anIsAutoPreview = aFactory.widgetAPI()->getBooleanAttribute(FEATURE_AUTO_PREVIEW, true);
+  }
 
-  connectToPropertyPanel(true);
-  myModule->operationStarted(aFOperation);
+  if (!anIsAutoPreview) {
+    myPropertyPanel->findButton(PROP_PANEL_PREVIEW)->setVisible(true);
+    // send signal about preview should not be computed automatically, click on preview
+    // button should initiate it
+    std::shared_ptr<Events_Message> aMsg = std::shared_ptr<Events_Message>(
+                  new Events_Message(Events_Loop::eventByName(EVENT_PREVIEW_BLOCKED)));
+    Events_Loop::loop()->send(aMsg);
+  }
+  // if update happens after preview is blocked, it does nothing when blocked
+  // it improves performance for valid objects on feature start
+  ModuleBase_Tools::flushUpdated(aFeature);
 
-  // the objects of the current operation should be deactivated
-  QObjectPtrList anObjects;
-  FeaturePtr aFeature = aFOperation->feature();
-  anObjects.append(aFeature);
-  std::list<ResultPtr> aResults = aFeature->results();
-  std::list<ResultPtr>::const_iterator aIt;
-  for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
-    anObjects.append(*aIt);
-  }
-  QObjectPtrList::const_iterator anIt = anObjects.begin(), aLast = anObjects.end();
-  for (; anIt != aLast; anIt++)
-    deactivateActiveObject(*anIt, false);
-  if (anObjects.size() > 0)
-    myDisplayer->updateViewer();
+  myPropertyPanel->setModelWidgets(aWidgets);
+  aFOperation->setPropertyPanel(myPropertyPanel);
+
+  myModule->propertyPanelDefined(theOperation);
+
+#ifndef DEBUG_FEATURE_NAME
+  myPropertyPanel->setWindowTitle(theOperation->getDescription()->description());
+#else
+  std::string aFeatureName = aFeature->name();
+  myPropertyPanel->setWindowTitle(QString("%1: %2")
+    .arg(theOperation->getDescription()->description())
+    .arg(aFeatureName.c_str()));
+#endif
+
+  myErrorMgr->setPropertyPanel(myPropertyPanel);
+}
+
+//******************************************************
+void XGUI_Workshop::connectToPropertyPanel(const bool isToConnect)
+{
+  XGUI_PropertyPanel* aPropertyPanel = propertyPanel();
+  if (aPropertyPanel) {
+    const QList<ModuleBase_ModelWidget*>& aWidgets = aPropertyPanel->modelWidgets();
+    foreach (ModuleBase_ModelWidget* aWidget, aWidgets) {
+       myModule->connectToPropertyPanel(aWidget, isToConnect);
+       if (isToConnect) {
+        connect(aWidget, SIGNAL(valueStateChanged(int)), this, SLOT(onWidgetStateChanged(int)));
+        connect(aWidget, SIGNAL(valuesChanged()), this, SLOT(onValuesChanged()));
+        connect(aWidget, SIGNAL(objectUpdated()), this, SLOT(onWidgetObjectUpdated()));
+       }
+      else {
+        disconnect(aWidget, SIGNAL(valueStateChanged(int)), this, SLOT(onWidgetStateChanged(int)));
+        disconnect(aWidget, SIGNAL(valuesChanged()), this, SLOT(onValuesChanged()));
+        disconnect(aWidget, SIGNAL(objectUpdated()), this, SLOT(onWidgetObjectUpdated()));
+      }
+    }
+  }
 }
 
 //******************************************************
@@ -483,7 +711,7 @@ void XGUI_Workshop::onOperationResumed(ModuleBase_Operation* theOperation)
   setGrantedFeatures(theOperation);
 
   if (theOperation->getDescription()->hasXmlRepresentation()) {  //!< No need for property panel
-    setPropertyPanel(theOperation);
+    fillPropertyPanel(theOperation);
     connectToPropertyPanel(true);
   }
   updateCommandStatus();
@@ -491,7 +719,6 @@ void XGUI_Workshop::onOperationResumed(ModuleBase_Operation* theOperation)
   myModule->operationResumed(theOperation);
 }
 
-
 //******************************************************
 void XGUI_Workshop::onOperationStopped(ModuleBase_Operation* theOperation)
 {
@@ -505,7 +732,7 @@ void XGUI_Workshop::onOperationStopped(ModuleBase_Operation* theOperation)
   ModuleBase_ISelection* aSel = mySelector->selection();
   QObjectPtrList aObj = aSel->selectedPresentations();
   //!< No need for property panel
-  hidePropertyPanel();
+  hidePanel(myPropertyPanel);
   myPropertyPanel->cleanContent();
 
   connectToPropertyPanel(false);
@@ -516,42 +743,49 @@ void XGUI_Workshop::onOperationStopped(ModuleBase_Operation* theOperation)
   QObjectPtrList anObjects;
   FeaturePtr aFeature = aFOperation->feature();
   if (aFeature.get()) { // feature may be not created (plugin load fail)
-    if (myDisplayer->isVisible(aFeature) && !myDisplayer->isActive(aFeature))
+    if (myDisplayer->isVisible(aFeature) && !selectionActivate()->isActive(aFeature))
       anObjects.append(aFeature);
-    std::list<ResultPtr> aResults = aFeature->results();
+    std::list<ResultPtr> aResults;
+    ModelAPI_Tools::allResults(aFeature, aResults);
     std::list<ResultPtr>::const_iterator aIt;
     for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
       ResultPtr anObject = *aIt;
-      if (myDisplayer->isVisible(anObject) && !myDisplayer->isActive(anObject)) {
+      if (myDisplayer->isVisible(anObject) && !selectionActivate()->isActive(anObject)) {
         anObjects.append(anObject);
       }
     }
   }
-  QIntList aModes;
-  module()->activeSelectionModes(aModes);
-  myDisplayer->activateObjects(aModes, anObjects);
+  activateObjectsSelection(anObjects);
 }
 
-
+//******************************************************
 void XGUI_Workshop::onOperationCommitted(ModuleBase_Operation* theOperation)
 {
   myModule->operationCommitted(theOperation);
 }
 
+//******************************************************
 void XGUI_Workshop::onOperationAborted(ModuleBase_Operation* theOperation)
 {
   myModule->operationAborted(theOperation);
 }
 
+//******************************************************
 void XGUI_Workshop::setGrantedFeatures(ModuleBase_Operation* theOperation)
 {
-  ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(theOperation);
+  ModuleBase_OperationFeature* aFOperation =
+    dynamic_cast<ModuleBase_OperationFeature*>(theOperation);
   if (!aFOperation)
     return;
 
   QStringList aGrantedIds;
-  if (isSalomeMode())
-    aGrantedIds = mySalomeConnector->nestedActions(theOperation->id());
+  if (isSalomeMode()) {
+    const std::shared_ptr<Config_FeatureMessage>& anInfo =
+                         mySalomeConnector->featureInfo(theOperation->id());
+    if (anInfo.get())
+      aGrantedIds = QString::fromStdString(anInfo->nestedFeatures())
+                                   .split(" ", QString::SkipEmptyParts);
+  }
   else
     aGrantedIds = myActionsMgr->nestedCommands(theOperation->id());
 
@@ -562,95 +796,42 @@ void XGUI_Workshop::setGrantedFeatures(ModuleBase_Operation* theOperation)
   aFOperation->setGrantedOperationIds(aGrantedIds);
 }
 
-void XGUI_Workshop::setPropertyPanel(ModuleBase_Operation* theOperation)
-{
-  ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(theOperation);
-  if (!aFOperation)
-    return;
-
-  showPropertyPanel();
-  myPropertyPanel->cleanContent();
-
-  QList<ModuleBase_ModelWidget*> aWidgets;
-  if (!module()->createWidgets(theOperation, aWidgets)) {
-    QString aXmlRepr = aFOperation->getDescription()->xmlRepresentation();
-    ModuleBase_WidgetFactory aFactory(aXmlRepr.toStdString(), myModuleConnector);
-    aFactory.createWidget(myPropertyPanel->contentWidget());
-    aWidgets = aFactory.getModelWidgets();
-  }
-
-  // check compatibility of feature and widgets
-  FeaturePtr aFeature = aFOperation->feature();
-  foreach (ModuleBase_ModelWidget* aWidget, aWidgets) {
-    if (!aWidget->attributeID().empty() && !aFeature->attribute(aWidget->attributeID()).get()) {
-      std::string anErrorMsg = "The feature '" + aFeature->getKind() + "' has no attribute '"
-          + aWidget->attributeID() + "' used by widget '"
-          + aWidget->metaObject()->className() + "'.";
-      Events_Error::send(anErrorMsg);
-      myPropertyPanel->cleanContent();
-      return;
-    }
-  }
-
-  foreach (ModuleBase_ModelWidget* aWidget, aWidgets) {
-    bool isStoreValue = !aFOperation->isEditOperation() &&
-                        !aWidget->getDefaultValue().empty() &&
-                        !aWidget->isComputedDefault();
-    aWidget->setFeature(aFOperation->feature(), isStoreValue);
-    aWidget->enableFocusProcessing();
-  }
-
-  myPropertyPanel->setModelWidgets(aWidgets);
-  aFOperation->setPropertyPanel(myPropertyPanel);
-
-  myModule->propertyPanelDefined(theOperation);
-
-#ifndef DEBUG_FEATURE_NAME
-  myPropertyPanel->setWindowTitle(theOperation->getDescription()->description());
-#else
-  std::string aFeatureName = aFeature->name();
-  myPropertyPanel->setWindowTitle(QString("%1: %2").arg(theOperation->getDescription()->description())
-                                                  .arg(aFeatureName.c_str()));
-#endif
-
-  myErrorMgr->setPropertyPanel(myPropertyPanel);
-}
-
-void XGUI_Workshop::connectToPropertyPanel(const bool isToConnect)
-{
-  XGUI_PropertyPanel* aPropertyPanel = propertyPanel();
-  if (aPropertyPanel) {
-    const QList<ModuleBase_ModelWidget*>& aWidgets = aPropertyPanel->modelWidgets();
-    foreach (ModuleBase_ModelWidget* aWidget, aWidgets) {
-       myModule->connectToPropertyPanel(aWidget, isToConnect);
-       if (isToConnect) {
-        connect(aWidget, SIGNAL(valueStateChanged(int)), this, SLOT(onWidgetStateChanged(int)));
-        connect(aWidget, SIGNAL(valuesChanged()), this, SLOT(onValuesChanged()));
-      }
-      else {
-        disconnect(aWidget, SIGNAL(valueStateChanged(int)), this, SLOT(onWidgetStateChanged(int)));
-        disconnect(aWidget, SIGNAL(valuesChanged()), this, SLOT(onValuesChanged()));
-      }
-    }
-  }
-}
-
-/*
- * Saves document with given name.
- */
+//******************************************************
 void XGUI_Workshop::saveDocument(const QString& theName, std::list<std::string>& theFileNames)
 {
   QApplication::restoreOverrideCursor();
   SessionPtr aMgr = ModelAPI_Session::get();
+
+  std::list<DocumentPtr> aDocList = aMgr->allOpenedDocuments();
+  std::list<DocumentPtr>::const_iterator aIt;
+  for (aIt = aDocList.cbegin(); aIt != aDocList.cend(); aIt++) {
+    std::list<bool> aState = myObjectBrowser->getStateForDoc(*aIt);
+    (*aIt)->storeNodesState(aState);
+  }
+
   aMgr->save(theName.toLatin1().constData(), theFileNames);
+
   QApplication::restoreOverrideCursor();
 }
 
+//******************************************************
 bool XGUI_Workshop::abortAllOperations()
 {
   return myOperationMgr->abortAllOperations();
 }
 
+//******************************************************
+void XGUI_Workshop::operationStarted(ModuleBase_Operation* theOperation)
+{
+  setGrantedFeatures(theOperation);
+  if (!theOperation->getDescription()->hasXmlRepresentation()) {  //!< No need for property panel
+    updateCommandStatus();
+  }
+  else {
+    myModule->operationStarted(theOperation);
+  }
+}
+
 //******************************************************
 void XGUI_Workshop::onOpen()
 {
@@ -673,20 +854,57 @@ void XGUI_Workshop::onOpen()
   }
 
   //show file dialog, check if readable and open
-  myCurrentDir = QFileDialog::getExistingDirectory(desktop(), tr("Select directory"));
+  QString aDirectory = QFileDialog::getExistingDirectory(desktop(), tr("Select directory"));
+  openDirectory(aDirectory);
+}
+
+//******************************************************
+void XGUI_Workshop::openDirectory(const QString& theDirectory)
+{
+  myCurrentDir = theDirectory;
   if (myCurrentDir.isEmpty())
     return;
+
   QFileInfo aFileInfo(myCurrentDir);
   if (!aFileInfo.exists() || !aFileInfo.isReadable()) {
     QMessageBox::critical(desktop(), tr("Warning"), tr("Unable to open the file."));
     myCurrentDir = "";
     return;
   }
+
   QApplication::setOverrideCursor(Qt::WaitCursor);
+  module()->closeDocument();
+  SessionPtr aSession = ModelAPI_Session::get();
   aSession->closeAll();
   aSession->load(myCurrentDir.toLatin1().constData());
   myObjectBrowser->rebuildDataTree();
+
+  // Open first level of data tree
+  DocumentPtr aRootDoc = aSession->moduleDocument();
+  std::list<bool> aStates;
+  aRootDoc->restoreNodesState(aStates);
+  myObjectBrowser->setStateForDoc(aRootDoc, aStates);
+
   updateCommandStatus();
+#ifndef HAVE_SALOME
+  myMainWindow->setCurrentDir(myCurrentDir, true);
+#endif
+
+#ifdef _DEBUG
+  bool aNewPart = Config_PropManager::boolean("Plugins", "create_part_by_start");
+  if (aNewPart) {
+
+    DocumentPtr aRootDoc = ModelAPI_Session::get()->moduleDocument();
+    int aSize = aRootDoc->size(ModelAPI_ResultPart::group());
+    if (aSize > 0 ) {
+      ObjectPtr aObject = aRootDoc->object(ModelAPI_ResultPart::group(), 0);
+      ResultPartPtr aPart = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aObject);
+      if (aPart.get())
+        aPart->activate();
+    }
+  }
+#endif
+
   QApplication::restoreOverrideCursor();
 }
 
@@ -763,7 +981,7 @@ void XGUI_Workshop::onTrihedronVisibilityChanged(bool theState)
 //******************************************************
 bool XGUI_Workshop::onSave()
 {
-  if(!abortAllOperations())
+  if(!myOperationMgr->abortAllOperations(XGUI_OperationMgr::XGUI_InformationMessage))
     return false;
   if (myCurrentDir.isEmpty()) {
     return onSaveAs();
@@ -780,12 +998,12 @@ bool XGUI_Workshop::onSave()
 //******************************************************
 bool XGUI_Workshop::onSaveAs()
 {
-  if(!abortAllOperations())
+  if(!myOperationMgr->abortAllOperations(XGUI_OperationMgr::XGUI_InformationMessage))
     return false;
   QFileDialog dialog(desktop());
   dialog.setWindowTitle(tr("Select directory to save files..."));
   dialog.setFileMode(QFileDialog::Directory);
-  dialog.setFilter(tr("Directories (*)"));
+  dialog.setFilter(QDir::AllDirs);
   dialog.setOptions(QFileDialog::HideNameFilterDetails | QFileDialog::ShowDirsOnly);
   dialog.setViewMode(QFileDialog::Detail);
 
@@ -798,7 +1016,8 @@ bool XGUI_Workshop::onSaveAs()
   if (aDir.exists() && !aDir.entryInfoList(QDir::NoDotAndDotDot | QDir::AllEntries).isEmpty()) {
     int answer = QMessageBox::question(
         desktop(),
-        //: Title of the dialog which asks user if he wants to save study in existing non-empty folder
+        // Title of the dialog which asks user if he wants to save study
+        // in existing non-empty folder
         tr("Save"),
         tr("The directory already contains some files, save anyway?"),
         QMessageBox::Save | QMessageBox::Cancel);
@@ -817,85 +1036,80 @@ bool XGUI_Workshop::onSaveAs()
 //******************************************************
 void XGUI_Workshop::onUndo(int theTimes)
 {
-  objectBrowser()->treeView()->setCurrentIndex(QModelIndex());
-  SessionPtr aMgr = ModelAPI_Session::get();
-  std::list<std::string> aUndoList = aMgr->undoList();
-  if (aMgr->isOperation()) {
-    /// this is important for nested operations
-    /// when sketch operation is active, this condition is false and
-    /// the sketch operation is not aborted
-    operationMgr()->onAbortOperation();
-  }
-  std::list<std::string>::const_iterator aIt = aUndoList.cbegin();
-  for (int i = 0; (i < theTimes) && (aIt != aUndoList.cend()); ++i, ++aIt) {
-    aMgr->undo();
-    if (QString((*aIt).c_str()) == MOVE_TO_END_COMMAND)
-      myObjectBrowser->rebuildDataTree();
-  }
-
-  operationMgr()->updateApplyOfOperations();
-  updateCommandStatus();
+  processUndoRedo(ActionUndo, theTimes);
+  myObjectBrowser->updateAllIndexes(1);
 }
 
 //******************************************************
 void XGUI_Workshop::onRedo(int theTimes)
 {
+  processUndoRedo(ActionRedo, theTimes);
+  myObjectBrowser->updateAllIndexes(1);
+}
+
+//******************************************************
+void XGUI_Workshop::processUndoRedo(const ModuleBase_ActionType theActionType, int theTimes)
+{
+  ModuleBase_ModelWidget* anActiveWidget = myOperationMgr->activeWidget();
+  if (anActiveWidget) {
+    ActionIntParamPtr aParam(new ModuleBase_ActionIntParameter(theTimes));
+    if (anActiveWidget->processAction(theActionType, aParam))
+      return;
+  }
   // the viewer update should be blocked in order to avoid the features blinking. For the created
   // feature a results are created, the flush of the created signal caused the viewer redisplay for
-  // each created result. After a redisplay signal is flushed. So, the viewer update is blocked until
-  // redo of all possible objects happens
+  // each created result. After a redisplay signal is flushed. So, the viewer update is blocked
+  // until redo of all possible objects happens
   bool isUpdateEnabled = myDisplayer->enableUpdateViewer(false);
 
-  objectBrowser()->treeView()->setCurrentIndex(QModelIndex());
   SessionPtr aMgr = ModelAPI_Session::get();
-  std::list<std::string> aRedoList = aMgr->redoList();
   if (aMgr->isOperation()) {
+    XGUI_OperationMgr* aOpMgr = operationMgr();
     /// this is important for nested operations
     /// when sketch operation is active, this condition is false and
     /// the sketch operation is not aborted
-    operationMgr()->onAbortOperation();
+    if (aOpMgr->canStopOperation(aOpMgr->currentOperation()))
+      aOpMgr->abortOperation(aOpMgr->currentOperation());
+    else
+    {
+      myDisplayer->enableUpdateViewer(isUpdateEnabled);
+      return;
+    }
   }
-  std::list<std::string>::const_iterator aIt = aRedoList.cbegin();
-  for (int i = 0; (i < theTimes) && (aIt != aRedoList.cend()); ++i, ++aIt) {
-    aMgr->redo();
+  objectBrowser()->treeView()->setCurrentIndex(QModelIndex());
+  std::list<std::string> anActionList = theActionType == ActionUndo ? aMgr->undoList()
+    : aMgr->redoList();
+  std::list<std::string>::const_iterator aIt = anActionList.cbegin();
+  for (int i = 0; (i < theTimes) && (aIt != anActionList.cend()); ++i, ++aIt) {
+    if (theActionType == ActionUndo)
+      aMgr->undo();
+    else
+      aMgr->redo();
+
     if (QString((*aIt).c_str()) == MOVE_TO_END_COMMAND)
       myObjectBrowser->rebuildDataTree();
   }
   operationMgr()->updateApplyOfOperations();
+  facesPanel()->reset(true);
   updateCommandStatus();
 
   // unblock the viewer update functionality and make update on purpose
   myDisplayer->enableUpdateViewer(isUpdateEnabled);
   myDisplayer->updateViewer();
+  // Clear messages in status bar from previous operations if exists
+  setStatusBarMessage("");
 }
 
-//******************************************************
-//void XGUI_Workshop::onRebuild()
-//{
-//  SessionPtr aMgr = ModelAPI_Session::get();
-//  bool aWasOperation = aMgr->isOperation(); // keep this value
-//  if (!aWasOperation) {
-//    aMgr->startOperation("Rebuild");
-//  }
-//  static const Events_ID aRebuildEvent = Events_Loop::loop()->eventByName("Rebuild");
-//  Events_Loop::loop()->send(std::shared_ptr<Events_Message>(
-//    new Events_Message(aRebuildEvent, this)));
-//  if (!aWasOperation) {
-//    aMgr->finishOperation();
-//  }
-//  updateCommandStatus();
-//}
-
 //******************************************************
 void XGUI_Workshop::onWidgetStateChanged(int thePreviousState)
 {
-  ModuleBase_ModelWidget* anActiveWidget = 0;
-  ModuleBase_Operation* anOperation = myOperationMgr->currentOperation();
-  if (anOperation) {
-    ModuleBase_IPropertyPanel* aPanel = anOperation->propertyPanel();
-    if (aPanel)
-      anActiveWidget = aPanel->activeWidget();
-  }
+  ModuleBase_ModelWidget* anActiveWidget = myOperationMgr->activeWidget();
+  //ModuleBase_Operation* anOperation = myOperationMgr->currentOperation();
+  //if (anOperation) {
+  //  ModuleBase_IPropertyPanel* aPanel = anOperation->propertyPanel();
+  //  if (aPanel)
+  //    anActiveWidget = aPanel->activeWidget();
+  //}
   if (anActiveWidget)
     operationMgr()->onValidateOperation();
 
@@ -906,7 +1120,7 @@ void XGUI_Workshop::onWidgetStateChanged(int thePreviousState)
 void XGUI_Workshop::onValuesChanged()
 {
   ModuleBase_ModelWidget* aSenderWidget = (ModuleBase_ModelWidget*)(sender());
-  if (!aSenderWidget || aSenderWidget->canSetValue())
+  if (!aSenderWidget || aSenderWidget->canAcceptFocus())
     return;
 
   ModuleBase_ModelWidget* anActiveWidget = 0;
@@ -919,10 +1133,18 @@ void XGUI_Workshop::onValuesChanged()
   if (anActiveWidget) {
     ModuleBase_WidgetValidated* aWidgetValidated = dynamic_cast<ModuleBase_WidgetValidated*>
                                                                            (anActiveWidget);
-    aWidgetValidated->clearValidatedCash();
+    if (aWidgetValidated)
+      aWidgetValidated->clearValidatedCash();
   }
 }
 
+//******************************************************
+void XGUI_Workshop::onWidgetObjectUpdated()
+{
+  operationMgr()->onValidateOperation();
+}
+
+//******************************************************
 ModuleBase_IModule* XGUI_Workshop::loadModule(const QString& theModule)
 {
   QString libName = QString::fromStdString(library(theModule.toStdString()));
@@ -973,7 +1195,7 @@ ModuleBase_IModule* XGUI_Workshop::loadModule(const QString& theModule)
 
   if (!err.isEmpty()) {
     if (desktop()) {
-      Events_Error::send(err.toStdString());
+      Events_InfoMessage("XGUI_Workshop", err.toStdString()).send();
     } else {
       qWarning(qPrintable(err));
     }
@@ -996,6 +1218,9 @@ bool XGUI_Workshop::createModule()
   //  myModule, SLOT(onBeforeObjectErase(ObjectPtr, AISObjectPtr)));
 
   myModule->createFeatures();
+#ifdef HAVE_SALOME
+  salomeConnector()->createFeatureActions();
+#endif
   //myActionsMgr->update();
   return true;
 }
@@ -1015,10 +1240,24 @@ void XGUI_Workshop::updateCommandStatus()
   if (aMgr->hasModuleDocument()) {
     foreach(QAction* aCmd, aCommands) {
       QString aId = aCmd->data().toString();
-      if (aId == "UNDO_CMD")
-        aCmd->setEnabled(myModule->canUndo());
-      else if (aId == "REDO_CMD")
-        aCmd->setEnabled(myModule->canRedo());
+      if (aId == "UNDO_CMD") {
+        bool isActionEnabled = false;
+        // if ultimate is true -> using result of operation only, or using OR combination
+        ModuleBase_ModelWidget* anActiveWidget = myOperationMgr->activeWidget();
+        if (anActiveWidget && anActiveWidget->canProcessAction(ActionUndo, isActionEnabled))
+          aCmd->setEnabled(isActionEnabled);
+        else
+          aCmd->setEnabled(myModule->canUndo());
+      }
+      else if (aId == "REDO_CMD") {
+        bool isActionEnabled = false;
+        // if ultimate is true -> using result of operation only, or using OR combination
+        ModuleBase_ModelWidget* anActiveWidget = myOperationMgr->activeWidget();
+        if (anActiveWidget && anActiveWidget->canProcessAction(ActionRedo, isActionEnabled))
+          aCmd->setEnabled(isActionEnabled);
+        else
+          aCmd->setEnabled(myModule->canRedo());
+      }
       else
         // Enable all commands
         aCmd->setEnabled(true);
@@ -1039,14 +1278,24 @@ void XGUI_Workshop::updateCommandStatus()
   emit commandStatusUpdated();
 }
 
+//******************************************************
 void XGUI_Workshop::updateHistory()
 {
-  std::list<std::string> aUndoList = ModelAPI_Session::get()->undoList();
-  QList<ActionInfo> aUndoRes = processHistoryList(aUndoList);
-  emit updateUndoHistory(aUndoRes);
+  bool isActionEnabled = false;
+  ModuleBase_ModelWidget* anActiveWidget = myOperationMgr->activeWidget();
+  QList<ActionInfo> aUndoRes;
+  QList<ActionInfo> aRedoRes;
+  if (anActiveWidget && anActiveWidget->canProcessAction(ActionUndo, isActionEnabled)) {
+    aUndoRes = anActiveWidget->actionsList(ActionUndo);
+    aRedoRes = anActiveWidget->actionsList(ActionRedo);
+  } else {
+    std::list<std::string> aUndoList = ModelAPI_Session::get()->undoList();
+    aUndoRes = processHistoryList(aUndoList);
 
-  std::list<std::string> aRedoList = ModelAPI_Session::get()->redoList();
-  QList<ActionInfo> aRedoRes = processHistoryList(aRedoList);
+    std::list<std::string> aRedoList = ModelAPI_Session::get()->redoList();
+    aRedoRes = processHistoryList(aRedoList);
+  }
+  emit updateUndoHistory(aUndoRes);
   emit updateRedoHistory(aRedoRes);
 }
 
@@ -1054,11 +1303,14 @@ void XGUI_Workshop::updateHistory()
 QDockWidget* XGUI_Workshop::createObjectBrowser(QWidget* theParent)
 {
   QDockWidget* aObjDock = new QDockWidget(theParent);
-  aObjDock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea | Qt::BottomDockWidgetArea);
+  aObjDock->setAllowedAreas(Qt::LeftDockWidgetArea |
+                            Qt::RightDockWidgetArea |
+                            Qt::BottomDockWidgetArea);
   aObjDock->setWindowTitle(tr("Object browser"));
   aObjDock->setStyleSheet(
       "::title { position: relative; padding-left: 5px; text-align: left center }");
-  myObjectBrowser = new XGUI_ObjectsBrowser(aObjDock);
+  myObjectBrowser = new XGUI_ObjectsBrowser(aObjDock, this);
+  myObjectBrowser->setXMLReader(myDataModelXMLReader);
   myModule->customizeObjectBrowser(myObjectBrowser);
   aObjDock->setWidget(myObjectBrowser);
 
@@ -1077,50 +1329,105 @@ void XGUI_Workshop::createDockWidgets()
   QDockWidget* aObjDock = createObjectBrowser(aDesktop);
   aDesktop->addDockWidget(Qt::LeftDockWidgetArea, aObjDock);
   myPropertyPanel = new XGUI_PropertyPanel(aDesktop, myOperationMgr);
+  myActiveControlMgr->addSelector(new XGUI_PropertyPanelSelector(myPropertyPanel));
+
   myPropertyPanel->setupActions(myActionsMgr);
-  myPropertyPanel->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea | Qt::BottomDockWidgetArea);
+  myPropertyPanel->setAllowedAreas(Qt::LeftDockWidgetArea |
+                                   Qt::RightDockWidgetArea |
+                                   Qt::BottomDockWidgetArea);
   aDesktop->addDockWidget(Qt::LeftDockWidgetArea, myPropertyPanel);
-  hidePropertyPanel();  ///<! Invisible by default
+  hidePanel(myPropertyPanel);  ///<! Invisible by default
+
+  myFacesPanel = new XGUI_FacesPanel(aDesktop, myModuleConnector);
+  myActiveControlMgr->addSelector(new XGUI_FacesPanelSelector(myFacesPanel));
+  myFacesPanel->setAllowedAreas(Qt::LeftDockWidgetArea |
+                                Qt::RightDockWidgetArea |
+                                Qt::BottomDockWidgetArea);
+  connect(myFacesPanel, SIGNAL(closed()), myFacesPanel, SLOT(onClosed()));
+
+  myInspectionPanel = new XGUI_InspectionPanel(aDesktop, mySelector);
+  myInspectionPanel->setAllowedAreas(Qt::LeftDockWidgetArea |
+    Qt::RightDockWidgetArea);
+  aDesktop->addDockWidget(Qt::RightDockWidgetArea, myInspectionPanel);
+
+  aDesktop->addDockWidget(
+#ifdef HAVE_SALOME
+    Qt::RightDockWidgetArea,
+#else
+    Qt::LeftDockWidgetArea,
+#endif
+    myFacesPanel);
+  hidePanel(myFacesPanel);  ///<! Invisible by default
+
+#ifdef _DEBUG
+  bool aShowOnTheRight = Config_PropManager::boolean("Plugins", "show_hide_faces");
+  if (aShowOnTheRight) {
+    aDesktop->addDockWidget(Qt::RightDockWidgetArea, myFacesPanel);
+    showPanel(myFacesPanel);
+  }
+#endif
   hideObjectBrowser();
+
+#ifndef HAVE_SALOME
+#ifdef _DEBUG
+  if (!aShowOnTheRight)
+  {
+#endif // _DEBUG
+  aDesktop->tabifyDockWidget(myFacesPanel, aObjDock);
+#ifdef _DEBUG
+  }
+#endif // _DEBUG
+
+#endif // HAVE_SALOME
+
   aDesktop->tabifyDockWidget(aObjDock, myPropertyPanel);
   myPropertyPanel->installEventFilter(myOperationMgr);
 
   QAction* aOkAct = myActionsMgr->operationStateAction(XGUI_ActionsMgr::Accept);
   connect(aOkAct, SIGNAL(triggered()), this, SLOT(onAcceptActionClicked()));
 
+  QAction* aOkContAct = myActionsMgr->operationStateAction(XGUI_ActionsMgr::AcceptPlus);
+  connect(aOkContAct, SIGNAL(triggered()), this, SLOT(onAcceptPlusActionClicked()));
+
   QAction* aCancelAct = myActionsMgr->operationStateAction(XGUI_ActionsMgr::Abort);
   connect(aCancelAct, SIGNAL(triggered()), myOperationMgr, SLOT(onAbortOperation()));
+
+  QAction* aPreviewAct = myActionsMgr->operationStateAction(XGUI_ActionsMgr::Preview);
+  connect(aPreviewAct, SIGNAL(triggered()), this, SLOT(onPreviewActionClicked()));
+
   connect(myPropertyPanel, SIGNAL(keyReleased(QObject*, QKeyEvent*)),
           myOperationMgr,  SLOT(onKeyReleased(QObject*, QKeyEvent*)));
-
   connect(myPropertyPanel, SIGNAL(enterClicked(QObject*)),
           myOperationMgr,  SLOT(onProcessEnter(QObject*)));
 }
 
 //******************************************************
-void XGUI_Workshop::showPropertyPanel()
+void XGUI_Workshop::showPanel(QDockWidget* theDockWidget)
 {
-  QAction* aViewAct = myPropertyPanel->toggleViewAction();
-  ///<! Restore ability to close panel from the window's menu
-  aViewAct->setEnabled(true);
-  myPropertyPanel->show();
-  myPropertyPanel->raise();
+  if (theDockWidget == myPropertyPanel) {
+    QAction* aViewAct = myPropertyPanel->toggleViewAction();
+    ///<! Restore ability to close panel from the window's menu
+    aViewAct->setEnabled(true);
+  }
+  theDockWidget->show();
+  theDockWidget->raise();
 
   // The next code is necessary to made the property panel the active window
   // in order to operation manager could process key events of the panel.
   // otherwise they are ignored. It happens only if the same(activateWindow) is
   // not happened by property panel activation(e.g. resume operation of Sketch)
-  ModuleBase_Tools::activateWindow(myPropertyPanel, "XGUI_Workshop::showPropertyPanel()");
-  ModuleBase_Tools::setFocus(myPropertyPanel, "XGUI_Workshop::showPropertyPanel()");
+  ModuleBase_Tools::setFocus(theDockWidget, "XGUI_Workshop::showPanel()");
 }
 
 //******************************************************
-void XGUI_Workshop::hidePropertyPanel()
+void XGUI_Workshop::hidePanel(QDockWidget* theDockWidget)
 {
-  QAction* aViewAct = myPropertyPanel->toggleViewAction();
-  ///<! Do not allow to show empty property panel
-  aViewAct->setEnabled(false);
-  myPropertyPanel->hide();
+  if (theDockWidget && theDockWidget == myPropertyPanel) {
+    QAction* aViewAct = theDockWidget->toggleViewAction();
+    ///<! Do not allow to show empty property panel
+    aViewAct->setEnabled(false);
+  }
+  theDockWidget->hide();
 
   // the property panel is active window of the desktop, when it is
   // hidden, it is undefined which window becomes active. By this reason
@@ -1130,8 +1437,7 @@ void XGUI_Workshop::hidePropertyPanel()
   // are processed by this console. For example Undo actions.
   // It is possible that this code is to be moved to SHAPER package
   QMainWindow* aDesktop = desktop();
-  ModuleBase_Tools::activateWindow(aDesktop, "XGUI_Workshop::hidePropertyPanel()");
-  ModuleBase_Tools::setFocus(aDesktop, "XGUI_Workshop::showPropertyPanel()");
+  ModuleBase_Tools::setFocus(aDesktop, "XGUI_Workshop::hidePanel()");
 }
 
 //******************************************************
@@ -1172,15 +1478,25 @@ void XGUI_Workshop::onContextMenuCommand(const QString& theId, bool isChecked)
     moveObjects();
   else if (theId == "COLOR_CMD")
     changeColor(aObjects);
+  else if (theId == "DEFLECTION_CMD")
+    changeDeflection(aObjects);
+#ifdef USE_TRANSPARENCY
+  else if (theId == "TRANSPARENCY_CMD")
+    changeTransparency(aObjects);
+#endif
   else if (theId == "SHOW_CMD") {
     showObjects(aObjects, true);
     mySelector->updateSelectionBy(ModuleBase_ISelection::Browser);
+    updateCommandStatus();
   }
-  else if (theId == "HIDE_CMD")
+  else if (theId == "HIDE_CMD") {
     showObjects(aObjects, false);
+    updateCommandStatus();
+  }
   else if (theId == "SHOW_ONLY_CMD") {
     showOnlyObjects(aObjects);
     mySelector->updateSelectionBy(ModuleBase_ISelection::Browser);
+    updateCommandStatus();
   }
   else if (theId == "SHADING_CMD")
     setDisplayMode(aObjects, XGUI_Displayer::Shading);
@@ -1193,14 +1509,178 @@ void XGUI_Workshop::onContextMenuCommand(const QString& theId, bool isChecked)
         aObj->setDisplayed(false);
     }
     Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
+#ifdef HAVE_SALOME
+    //issue #2159 Hide all incomplete behavior
+    viewer()->eraseAll();
+#endif
+    updateCommandStatus();
+    // Necessary for update icons in ObjectBrowser on Linux
+    myObjectBrowser->updateAllIndexes();
+  } else if (theId == "SELECT_VERTEX_CMD") {
+    setViewerSelectionMode(TopAbs_VERTEX);
+  } else if (theId == "SELECT_EDGE_CMD") {
+    setViewerSelectionMode(TopAbs_EDGE);
+  } else if (theId == "SELECT_FACE_CMD") {
+    setViewerSelectionMode(TopAbs_FACE);
+  } else if (theId == "INSERT_FOLDER_CMD") {
+    insertFeatureFolder();
+  } else if (theId == "ADD_TO_FOLDER_BEFORE_CMD") {
+    insertToFolder(true);
+  } else if (theId == "ADD_TO_FOLDER_AFTER_CMD") {
+    insertToFolder(false);
+  } else if (theId == "ADD_OUT_FOLDER_BEFORE_CMD") {
+    moveOutFolder(true);
+  } else if (theId == "ADD_OUT_FOLDER_AFTER_CMD") {
+    moveOutFolder(false);
+  } else if (theId == "SELECT_RESULT_CMD") {
+    //setViewerSelectionMode(-1);
+    //IMP: an attempt to use result selection with other selection modes
+    setViewerSelectionMode(ModuleBase_ResultPrs::Sel_Result);
+    setViewerSelectionMode(TopAbs_COMPSOLID);
+  } else if (theId == "SHOW_RESULTS_CMD") {
+    highlightResults(aObjects);
+  } else if (theId == "SHOW_FEATURE_CMD") {
+    highlightFeature(aObjects);
+  }
+#ifdef TINSPECTOR
+  else if (theId == "TINSPECTOR_VIEW") {
+    Handle(CDF_Application) anApplication = CDF_Session::CurrentSession()->CurrentApplication();
+    if (!anApplication.IsNull())
+    {
+      if (!MyTCommunicator)
+      {
+        MyTCommunicator = new TInspector_Communicator();
+
+        NCollection_List<Handle(Standard_Transient)> aParameters;
+        aParameters.Append(anApplication);
+        Handle(AIS_InteractiveContext) aContext = viewer()->AISContext();
+        if (!aContext.IsNull())
+          aParameters.Append(aContext);
+
+#ifdef DEBUG_WITH_MESSAGE_REPORT
+        Handle(Message_Report) aContextReport = aContext->GetReport();
+        aContext->SetReportActive (Standard_True);
+        aContextReport->SetLimit (1000);
+        if (!aContextReport.IsNull())
+          aParameters.Append(aContextReport);
+#endif
+        MyVCallBack = new VInspector_CallBack();
+        myDisplayer->setCallBack(MyVCallBack);
+        #ifndef HAVE_SALOME
+        AppElements_Viewer* aViewer = mainWindow()->viewer();
+        if (aViewer)
+          aViewer->setCallBack(MyVCallBack);
+        #endif
+        aParameters.Append(MyVCallBack);
+
+        MyTCommunicator->RegisterPlugin("TKDFBrowser");
+        MyTCommunicator->RegisterPlugin("TKShapeView");
+        MyTCommunicator->RegisterPlugin("TKVInspector");
+#ifdef DEBUG_WITH_MESSAGE_REPORT
+        MyTCommunicator->RegisterPlugin("TKMessageView");
+#endif
+        MyTCommunicator->RegisterPlugin("SMBrowser"); // custom plugin to view ModelAPI
+        //MyTCommunicator->RegisterPlugin("TKSMBrowser"); // custom plugin to view ModelAPI
+
+        MyTCommunicator->Init(aParameters);
+        MyTCommunicator->Activate("TKSMBrowser"); // to have button in TInspector
+#ifndef DEBUG_WITH_MESSAGE_REPORT
+        MyTCommunicator->Activate("TKVInspector"); // to have filled callback by model
+#endif
+        MyTCommunicator->Activate("TKDFBrowser");
+
+#ifdef DEBUG_WITH_MESSAGE_REPORT
+        MyTCommunicator->Activate("TKMessageView"); // temporary
+        MyTCommunicator->Activate("TKVInspector"); // to have filled callback by model
+#endif
+      }
+      MyTCommunicator->SetVisible(true);
+    }
+  }
+#endif
+}
+
+//**************************************************************
+void XGUI_Workshop::setViewerSelectionMode(int theMode)
+{
+  if (theMode == -1)
+    myViewerSelMode.clear();
+  else {
+    if (myViewerSelMode.contains(theMode))
+      myViewerSelMode.removeAll(theMode);
+    else
+      myViewerSelMode.append(theMode);
   }
+  selectionActivate()->updateSelectionModes();
+}
+
+//**************************************************************
+void XGUI_Workshop::activateObjectsSelection(const QObjectPtrList& theList)
+{
+  QIntList aModes;
+  module()->activeSelectionModes(aModes);
+  if (aModes.isEmpty() && (myViewerSelMode.length() > 0))
+    aModes.append(myViewerSelMode);
+  selectionActivate()->activateObjects(aModes, theList);
+}
+
+//**************************************************************
+bool XGUI_Workshop::prepareForDisplay(const std::set<ObjectPtr>& theObjects) const
+{
+  if (facesPanel()->isEmpty())
+    return true;
+
+  // generate container of objects taking into account sub elments of compsolid
+  std::set<ObjectPtr> anAllProcessedObjects;
+  for (std::set<ObjectPtr>::const_iterator anObjectsIt = theObjects.begin();
+    anObjectsIt != theObjects.end(); anObjectsIt++) {
+    ObjectPtr anObject = *anObjectsIt;
+    ResultCompSolidPtr aCompRes = std::dynamic_pointer_cast<ModelAPI_ResultCompSolid>(anObject);
+    if (aCompRes.get()) {
+      if (aCompRes->numberOfSubs(true) == 0)
+        anAllProcessedObjects.insert(anObject);
+      else {
+        for (int i = 0; i < aCompRes->numberOfSubs(true); i++) {
+          ResultPtr aSubRes = aCompRes->subResult(i, true);
+          anAllProcessedObjects.insert(aCompRes->subResult(i, true));
+        }
+      }
+    }
+    else
+      anAllProcessedObjects.insert(anObject);
+  }
+
+  // find hidden objects in faces panel
+  std::set<ObjectPtr> aHiddenObjects;
+  QStringList aHiddenObjectNames;
+  for (std::set<ObjectPtr>::const_iterator anObjectsIt = anAllProcessedObjects.begin();
+       anObjectsIt != anAllProcessedObjects.end(); anObjectsIt++) {
+    if (!facesPanel()->isObjectHiddenByPanel(*anObjectsIt))
+      continue;
+    aHiddenObjects.insert(*anObjectsIt);
+    aHiddenObjectNames.append((*anObjectsIt)->data()->name().c_str());
+  }
+  if (aHiddenObjects.empty()) // in parameter objects there are no hidden objects in hide face
+    return true;
+
+  int anAnswer = QMessageBox::question(
+        desktop(), tr("Show object"),
+        tr("'%1'\n are hidden by %2:\nRemove objects from the panel to be displayed?")
+        .arg(aHiddenObjectNames.join(", ")).arg(facesPanel()->windowTitle()),
+        QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
+
+  bool aToBeDisplayed = anAnswer == QMessageBox::Yes;
+  if (aToBeDisplayed)
+    facesPanel()->restoreObjects(aHiddenObjects);
+
+  return aToBeDisplayed;
 }
 
 //**************************************************************
 void XGUI_Workshop::deleteObjects()
 {
   ModuleBase_IModule* aModule = module();
-  // 1. allow the module to delete objects, do nothing if it has succeed
+  // allow the module to delete objects, do nothing if it has succeed
   if (aModule->deleteObjects()) {
     updateCommandStatus();
     return;
@@ -1209,42 +1689,81 @@ void XGUI_Workshop::deleteObjects()
   QObjectPtrList anObjects = mySelector->selection()->selectedObjects();
   if (!abortAllOperations())
     return;
-  // check whether the object can be deleted. There should not be parts which are not loaded
-  if (!XGUI_Tools::canRemoveOrRename(desktop(), anObjects))
-    return;
 
   bool hasResult = false;
   bool hasFeature = false;
   bool hasParameter = false;
-  bool hasSubFeature = false;
-  ModuleBase_Tools::checkObjects(anObjects, hasResult, hasFeature, hasParameter, hasSubFeature);
-  if (!(hasFeature || hasParameter))
+  bool hasCompositeOwner = false;
+  bool hasResultInHistory = false;
+  bool hasFolder = false;
+  ModuleBase_Tools::checkObjects(anObjects, hasResult, hasFeature, hasParameter, hasCompositeOwner,
+                                 hasResultInHistory, hasFolder);
+  if (!(hasFeature || hasParameter || hasFolder))
     return;
 
-  // 3. delete objects
-  std::set<FeaturePtr> anIgnoredFeatures;
-  std::set<FeaturePtr> aDirectRefFeatures, aIndirectRefFeatures;
-  findReferences(anObjects, aDirectRefFeatures, aIndirectRefFeatures);
-
-  bool doDeleteReferences = true;
-  if (isDeleteFeatureWithReferences(anObjects, aDirectRefFeatures, aIndirectRefFeatures,
-                                    desktop(), doDeleteReferences)) {
-    // start operation
-    QString aDescription = contextMenuMgr()->action("DELETE_CMD")->text();
-    aDescription += " " + aDescription.arg(XGUI_Tools::unionOfObjectNames(anObjects, ", "));
-    ModuleBase_OperationAction* anOpAction = new ModuleBase_OperationAction(aDescription, module());
-    operationMgr()->startOperation(anOpAction);
+  // delete objects
+  std::map<FeaturePtr, std::set<FeaturePtr> > aReferences;
+  std::set<FeaturePtr> aFeatures;
+  ModuleBase_Tools::convertToFeatures(anObjects, aFeatures);
+  ModelAPI_Tools::findAllReferences(aFeatures, aReferences);
+
+  std::set<FolderPtr> aFolders;
+  ModuleBase_Tools::convertToFolders(anObjects, aFolders);
+
+  bool aDone = false;
+  QString aDescription = contextMenuMgr()->action("DELETE_CMD")->text() + " %1";
+  aDescription = aDescription.arg(XGUI_Tools::unionOfObjectNames(anObjects, ", "));
+  ModuleBase_OperationAction* anOpAction = new ModuleBase_OperationAction(aDescription, module());
 
+  operationMgr()->startOperation(anOpAction);
+
+  std::set<FeaturePtr> aFeatureRefsToDelete;
+  if (ModuleBase_Tools::askToDelete(aFeatures, aReferences, desktop(), aFeatureRefsToDelete)) {
+    // WORKAROUND, should be done before each object remove, if it presents in XGUI_DataModel tree
     // It is necessary to clear selection in order to avoid selection changed event during
     // deletion and negative consequences connected with processing of already deleted items
     mySelector->clearSelection();
 
-    // delete and commit/abort operation in model
-    if (deleteFeaturesInternal(anObjects, aDirectRefFeatures, aIndirectRefFeatures,
-                               anIgnoredFeatures, doDeleteReferences))
-      operationMgr()->commitOperation();
-    else
-      operationMgr()->abortOperation(operationMgr()->currentOperation());
+    if (!aFeatureRefsToDelete.empty())
+      aFeatures.insert(aFeatureRefsToDelete.begin(), aFeatureRefsToDelete.end());
+    aDone = ModelAPI_Tools::removeFeatures(aFeatures, false);
+  }
+  if (aFolders.size() > 0) {
+    std::set<FolderPtr>::const_iterator anIt = aFolders.begin(),
+                                         aLast = aFolders.end();
+    for (; anIt != aLast; anIt++) {
+      FolderPtr aFolder = *anIt;
+      if (aFolder.get()) {
+        DocumentPtr aDoc = aFolder->document();
+        aDoc->removeFolder(aFolder);
+      }
+    }
+  }
+
+  if (aDone)
+    operationMgr()->commitOperation();
+  else
+    operationMgr()->abortOperation(operationMgr()->currentOperation());
+}
+
+//**************************************************************
+void addRefsToFeature(const FeaturePtr& theFeature,
+                      const std::map<FeaturePtr, std::set<FeaturePtr> >& theMainList,
+                      std::set<FeaturePtr>& theReferences)
+{
+  //if (theReferences.find(theFeature) != theReferences.end())
+  //  return;
+  if (theMainList.find(theFeature) == theMainList.end())
+    return; // this feature is not in the selection list, so exists without references to it
+  std::set<FeaturePtr> aMainReferences = theMainList.at(theFeature);
+
+  std::set<FeaturePtr>::const_iterator anIt = aMainReferences.begin(),
+                                       aLast = aMainReferences.end();
+  for (; anIt != aLast; anIt++) {
+    FeaturePtr aRefFeature = *anIt;
+    if (theReferences.find(aRefFeature) == theReferences.end())
+      theReferences.insert(aRefFeature);
+    addRefsToFeature(aRefFeature, theMainList, theReferences);
   }
 }
 
@@ -1255,43 +1774,66 @@ void XGUI_Workshop::cleanHistory()
     return;
 
   QObjectPtrList anObjects = mySelector->selection()->selectedObjects();
-  QObjectPtrList aFeatures;
-  foreach (ObjectPtr anObject, anObjects) {
-    FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anObject);
-    // for parameter result, use the corresponded reature to be removed
-    if (!aFeature.get() && anObject->groupName() == ModelAPI_ResultParameter::group()) {
-      aFeature = ModelAPI_Feature::feature(anObject);
-    }
-    aFeatures.append(aFeature);
-  }
-
-  // 1. find all referenced features
-  QList<ObjectPtr> anUnusedObjects;
-  std::set<FeaturePtr> aDirectRefFeatures;
-  //foreach (ObjectPtr anObject, anObjects) {
-  foreach (ObjectPtr anObject, aFeatures) {
-    FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anObject);
-    // for parameter result, use the corresponded reature to be removed
-    //if (!aFeature.get() && anObject->groupName() == ModelAPI_ResultParameter::group()) {
-    //  aFeature = ModelAPI_Feature::feature(anObject);
-    //}
-    if (aFeature.get()) {
-      std::set<FeaturePtr> alreadyProcessed;
-      aDirectRefFeatures.clear();
-      XGUI_Tools::refsDirectToFeatureInAllDocuments(aFeature, aFeature, aFeatures,
-                                                    aDirectRefFeatures, alreadyProcessed);
-      if (aDirectRefFeatures.empty() && !anUnusedObjects.contains(aFeature))
-        anUnusedObjects.append(aFeature);
+  std::set<FeaturePtr> aFeatures;
+  ModuleBase_Tools::convertToFeatures(anObjects, aFeatures);
+
+#ifdef DEBUG_CLEAN_HISTORY
+  QStringList anInfo;
+  std::set<FeaturePtr>::const_iterator aFIt;
+  for (aFIt = aFeatures.begin(); aFIt != aFeatures.end(); ++aFIt) {
+    FeaturePtr aFeature = ModelAPI_Feature::feature(*aFIt);
+    anInfo.append(aFeature->name().c_str());
+  }
+  QString anInfoStr = anInfo.join(";\t");
+  qDebug(QString("cleanHistory for: [%1] - %2").
+    arg(aFeatures.size()).arg(anInfoStr).toStdString().c_str());
+#endif
+
+  std::map<FeaturePtr, std::set<FeaturePtr> > aReferences;
+  ModelAPI_Tools::findAllReferences(aFeatures, aReferences, true, false);
+  // find for each object whether all reference values are in the map as key, that means that there
+  // is no other reference in the model to this object, so it might be removed by cleaning history
+  // sk_1(ext_1, vertex_1) + (sk_3, bool_1) - cann't be deleted, dependency to bool_1
+  // ext_1(bool_1, sk_3)  - cann't be deleted, dependency to bool_1
+  // vertex_1()
+  // sk_2(ext_2) + (bool_1)  - cann't be deleted, dependency to bool_1
+  // ext_2(bool_1)  - cann't be deleted, dependency to bool_1
+  // sk_3()
+  // Information: bool_1 is not selected
+  std::set<FeaturePtr> anUnusedObjects;
+  std::map<FeaturePtr, std::set<FeaturePtr> >::const_iterator aMainIt = aReferences.begin(),
+                                                              aMainLast = aReferences.end();
+  for (; aMainIt != aMainLast; aMainIt++) {
+    FeaturePtr aMainListFeature = aMainIt->first;
+    std::set<FeaturePtr> aMainRefList = aMainIt->second;
+    std::set<FeaturePtr>::const_iterator aRefIt = aMainRefList.begin(),
+                                                  aRefLast = aMainRefList.end();
+    bool aFeatureOutOfTheList = false;
+    for (; aRefIt != aRefLast && !aFeatureOutOfTheList; aRefIt++) {
+      FeaturePtr aRefFeature = *aRefIt;
+      aFeatureOutOfTheList = aReferences.find(aRefFeature) == aReferences.end();
     }
+    if (!aFeatureOutOfTheList)
+      anUnusedObjects.insert(aMainListFeature);
   }
 
-  // 2. warn about the references remove, break the delete operation if the user chose it
+#ifdef DEBUG_CLEAN_HISTORY
+  anInfo.clear();
+  for (aFIt = anUnusedObjects.begin(); aFIt != anUnusedObjects.end(); ++aFIt) {
+    FeaturePtr aFeature = *aFIt;
+    anInfo.append(aFeature->name().c_str());
+  }
+  qDebug(QString("unused objects: [%1] - %2").
+    arg(anInfo.size()).arg(anInfo.join(";\t")).toStdString().c_str());
+#endif
+
+  // warn about the references remove, break the delete operation if the user chose it
   if (!anUnusedObjects.empty()) {
     QStringList aNames;
-    foreach (const ObjectPtr& anObject, anUnusedObjects) {
-      FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anObject);
+    foreach (const FeaturePtr& aFeature, anUnusedObjects) {
       aNames.append(aFeature->name().c_str());
     }
+    aNames.sort();
     QString anUnusedNames = aNames.join(", ");
 
     QString anActionId = "CLEAN_HISTORY_CMD";
@@ -1303,34 +1845,26 @@ void XGUI_Workshop::cleanHistory()
     aMessageBox.setStandardButtons(QMessageBox::No | QMessageBox::Yes);
     aMessageBox.setDefaultButton(QMessageBox::No);
 
-    QString aText = QString(tr("Unused features are the following: %1.\nThese features will be deleted.\nWould you like to continue?")
-                   .arg(anUnusedNames));
-    /*QString aText;
-    if (anUnusedNames.isEmpty()) {
-      aMessageBox.setStandardButtons(QMessageBox::Ok);
-      aMessageBox.setDefaultButton(QMessageBox::Ok);
-
-      aText = QString(tr("All features are relevant, there is nothing to be deleted"));
-    }
-    else {
-      aMessageBox.setStandardButtons(QMessageBox::No | QMessageBox::Yes);
-      aMessageBox.setDefaultButton(QMessageBox::No);
-
-      aText = QString(tr("Unused features are the following: %1.\nThese features will be deleted.\nWould you like to continue?")
-        .arg(anUnusedNames));
-    }*/
-
+    const char* aKeyStr = "Unused features are the following: "
+                          "%1.\nThese features will be deleted.\nWould you like to continue?";
+    QString aText = QString(tr(aKeyStr).arg(anUnusedNames));
     aMessageBox.setText(aText);
     if (aMessageBox.exec() == QMessageBox::No)
       return;
 
     // 1. start operation
-    aDescription += "by deleting of " + aDescription.arg(XGUI_Tools::unionOfObjectNames(anObjects, ", "));
+    aDescription += "by deleting of " +
+      aDescription.arg(XGUI_Tools::unionOfObjectNames(anObjects, ", "));
     ModuleBase_OperationAction* anOpAction = new ModuleBase_OperationAction(aDescription, module());
     operationMgr()->startOperation(anOpAction);
 
+    // WORKAROUND, should be done before each object remove, if it presents in XGUI_DataModel tree
+    // It is necessary to clear selection in order to avoid selection changed event during
+    // deletion and negative consequences connected with processing of already deleted items
+    mySelector->clearSelection();
+
     std::set<FeaturePtr> anIgnoredFeatures;
-    if (removeFeatures(anUnusedObjects, anIgnoredFeatures, anActionId)) {
+    if (ModelAPI_Tools::removeFeatures(anUnusedObjects, true)) {
       operationMgr()->commitOperation();
     }
     else {
@@ -1376,202 +1910,35 @@ void XGUI_Workshop::moveObjects()
   // moving and negative consequences connected with processing of already moved items
   mySelector->clearSelection();
   // check whether the object can be moved. There should not be parts which are not loaded
-  if (!XGUI_Tools::canRemoveOrRename(desktop(), anObjects))
+  std::set<FeaturePtr> aFeatures;
+  ModuleBase_Tools::convertToFeatures(anObjects, aFeatures);
+  if (!XGUI_Tools::canRemoveOrRename(desktop(), aFeatures))
     return;
 
   DocumentPtr anActiveDocument = aMgr->activeDocument();
   FeaturePtr aCurrentFeature = anActiveDocument->currentFeature(true);
-  foreach (ObjectPtr aObject, anObjects) {
-    if (!myModule->canApplyAction(aObject, anActionId))
+  std::set<FeaturePtr>::const_iterator anIt = aFeatures.begin(), aLast = aFeatures.end();
+  for (; anIt != aLast; anIt++) {
+    FeaturePtr aFeature = *anIt;
+    if (!aFeature.get() || !myModule->canApplyAction(aFeature, anActionId))
       continue;
 
-    FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObject);
-    if (aFeature.get()) {
-      anActiveDocument->moveFeature(aFeature, aCurrentFeature);
-      aCurrentFeature = anActiveDocument->currentFeature(true);
-    }
+    anActiveDocument->moveFeature(aFeature, aCurrentFeature);
+    aCurrentFeature = anActiveDocument->currentFeature(true);
   }
   aMgr->finishOperation();
 }
 
 //**************************************************************
-void XGUI_Workshop::findReferences(const QObjectPtrList& theList,
-                                   std::set<FeaturePtr>& aDirectRefFeatures,
-                                   std::set<FeaturePtr>& aIndirectRefFeatures)
-{
-  foreach (ObjectPtr aDeletedObj, theList) {
-    std::set<FeaturePtr> alreadyProcessed;
-    XGUI_Tools::refsToFeatureInAllDocuments(aDeletedObj, aDeletedObj, theList, aDirectRefFeatures,
-                                            aIndirectRefFeatures, alreadyProcessed);
-    std::set<FeaturePtr> aDifference;
-    std::set_difference(aIndirectRefFeatures.begin(), aIndirectRefFeatures.end(), 
-                        aDirectRefFeatures.begin(), aDirectRefFeatures.end(), 
-                        std::inserter(aDifference, aDifference.begin()));
-    aIndirectRefFeatures = aDifference;
-  }
-}
-
-bool XGUI_Workshop::isDeleteFeatureWithReferences(const QObjectPtrList& theList,
-                                   const std::set<FeaturePtr>& aDirectRefFeatures,
-                                   const std::set<FeaturePtr>& aIndirectRefFeatures,
-                                   QWidget* theParent,
-                                   bool& doDeleteReferences)
-{
-  doDeleteReferences = true;
-
-  QString aDirectNames, aIndirectNames;
-  if (!aDirectRefFeatures.empty()) {
-    QStringList aDirectRefNames;
-    foreach (const FeaturePtr& aFeature, aDirectRefFeatures)
-      aDirectRefNames.append(aFeature->name().c_str());
-    aDirectNames = aDirectRefNames.join(", ");
-
-    QStringList aIndirectRefNames;
-    foreach (const FeaturePtr& aFeature, aIndirectRefFeatures)
-      aIndirectRefNames.append(aFeature->name().c_str());
-    aIndirectNames = aIndirectRefNames.join(", ");
-  }
-
-  bool aCanReplaceParameters = !aDirectRefFeatures.empty();
-  QStringList aPartFeatureNames;
-  foreach (ObjectPtr aObj, theList) {
-    FeaturePtr aFeature = ModelAPI_Feature::feature(aObj);
-    ResultPtr aFirstResult = aFeature->firstResult();
-    std::string aResultGroupName = aFirstResult->groupName();
-    if (aResultGroupName == ModelAPI_ResultPart::group())
-      aPartFeatureNames.append(aFeature->name().c_str());
-
-    if (aCanReplaceParameters && aResultGroupName != ModelAPI_ResultParameter::group())
-      aCanReplaceParameters = false;
-  }
-  QString aPartNames = aPartFeatureNames.join(", ");
-
-  QMessageBox aMessageBox(theParent);
-  aMessageBox.setWindowTitle(tr("Delete features"));
-  aMessageBox.setIcon(QMessageBox::Warning);
-  aMessageBox.setStandardButtons(QMessageBox::No | QMessageBox::Yes);
-  aMessageBox.setDefaultButton(QMessageBox::No);
-
-  QString aText;
-  if (!aDirectNames.isEmpty() || !aIndirectNames.isEmpty()) {
-    if (aCanReplaceParameters) {
-      aText = QString(tr("Selected parameters are used in the following features: %1.\nThese features will be deleted.\nOr parameters could be replaced by their values.\n")
-                      .arg(aDirectNames));
-      if (!aIndirectNames.isEmpty())
-        aText += QString(tr("(Also these features will be deleted: %1)\n")).arg(aIndirectNames);
-      QPushButton *aReplaceButton = aMessageBox.addButton(tr("Replace"), QMessageBox::ActionRole);
-    } else {
-      aText = QString(tr("Selected features are used in the following features: %1.\nThese features will be deleted.\n")).arg(aDirectNames);
-      if (!aIndirectNames.isEmpty())
-        aText += QString(tr("(Also these features will be deleted: %1)\n")).arg(aIndirectNames);
-    }
-  }
-  if (!aPartNames.isEmpty())
-    aText += QString(tr("The following parts will be deleted: %1.\n")).arg(aPartNames);
-
-  if (!aText.isEmpty()) {
-    aText += "Would you like to continue?";
-    aMessageBox.setText(aText);
-    aMessageBox.exec();
-    QMessageBox::ButtonRole aButtonRole = aMessageBox.buttonRole(aMessageBox.clickedButton());
-
-    if (aButtonRole == QMessageBox::NoRole)
-      return false;
-
-    if (aButtonRole == QMessageBox::ActionRole) {
-      foreach (ObjectPtr aObj, theList)
-        ModelAPI_ReplaceParameterMessage::send(aObj, this);
-      doDeleteReferences = false;
-    }
-  }
-  return true;
-}
-
-bool XGUI_Workshop::deleteFeatures(const QObjectPtrList& theFeatures,
-                                   const std::set<FeaturePtr>& theIgnoredFeatures)
-{
-  std::set<FeaturePtr> aDirectRefFeatures, aIndirectRefFeatures;
-  findReferences(theFeatures, aDirectRefFeatures, aIndirectRefFeatures);
-  return deleteFeaturesInternal(theFeatures, aDirectRefFeatures, aIndirectRefFeatures,
-                                theIgnoredFeatures);
-}
-
-bool XGUI_Workshop::deleteFeaturesInternal(const QObjectPtrList& theList,
-                                           const std::set<FeaturePtr>& aDirectRefFeatures,
-                                           const std::set<FeaturePtr>& aIndirectRefFeatures,
-                                           const std::set<FeaturePtr>& theIgnoredFeatures,
-                                           const bool doDeleteReferences)
-{
-  if (doDeleteReferences) {
-    std::set<FeaturePtr> aFeaturesToDelete = aDirectRefFeatures;
-    aFeaturesToDelete.insert(aIndirectRefFeatures.begin(), aIndirectRefFeatures.end());
-    std::set<FeaturePtr>::const_iterator anIt = aFeaturesToDelete.begin(),
-                                         aLast = aFeaturesToDelete.end();
-#ifdef DEBUG_DELETE
-    QStringList anInfo;
-#endif
-    for (; anIt != aLast; anIt++) {
-      FeaturePtr aFeature = (*anIt);
-      DocumentPtr aDoc = aFeature->document();
-      if (theIgnoredFeatures.find(aFeature) == theIgnoredFeatures.end()) {
-        aDoc->removeFeature(aFeature);
-#ifdef DEBUG_DELETE
-        anInfo.append(ModuleBase_Tools::objectInfo(aFeature).toStdString().c_str());
-#endif
-      }
-    }
-#ifdef DEBUG_DELETE
-    qDebug(QString("remove references:%1").arg(anInfo.join("; ")).toStdString().c_str());
-    anInfo.clear();
-#endif
-  }
-
-  QString anActionId = "DELETE_CMD";
-  return removeFeatures(theList, theIgnoredFeatures, anActionId);
-}
-
-//**************************************************************
-bool XGUI_Workshop::removeFeatures(const QObjectPtrList& theList,
-                                   const std::set<FeaturePtr>& theIgnoredFeatures,
-                                   const QString& theActionId)
+bool XGUI_Workshop::deleteFeatures(const QObjectPtrList& theObjects)
 {
-  bool isDone = false;
+  std::set<FeaturePtr> aFeatures;
+  ModuleBase_Tools::convertToFeatures(theObjects, aFeatures);
 
-  QString anId = QString::fromStdString(theActionId.toStdString().c_str());
-  QStringList anObjectGroups = contextMenuMgr()->actionObjectGroups(anId);
-  // 4. remove the parameter features
-  foreach (ObjectPtr aObj, theList) {
-    // features and parameters can be removed here,
-    // the results are removed only by a corresponded feature remove
-    std::string aGroupName = aObj->groupName();
-    if (!anObjectGroups.contains(aGroupName.c_str()))
-      continue;
-
-    FeaturePtr aFeature = ModelAPI_Feature::feature(aObj);
-    if (aFeature) {
-      /*// TODO: to learn the workshop to delegate the Part object deletion to the PartSet module
-      // part features are removed in the PartSet module. This condition should be moved there
-      if (aFeature->getKind() == "Part")
-        continue;
-        */
-      DocumentPtr aDoc = aObj->document();
-      if (theIgnoredFeatures.find(aFeature) == theIgnoredFeatures.end()) {
-#ifdef DEBUG_DELETE
-        QString anInfoStr = ModuleBase_Tools::objectInfo(aFeature);
-        anInfo.append(anInfoStr);
-        qDebug(QString("remove feature :%1").arg(anInfoStr).toStdString().c_str());
-#endif
-        aDoc->removeFeature(aFeature);
-        isDone = true;
-      }
-    }
-  }
-#ifdef DEBUG_DELETE
-  qDebug(QString("remove features:%1").arg(anInfo.join("; ")).toStdString().c_str());
-#endif
-  return true;
+  return ModelAPI_Tools::removeFeaturesAndReferences(aFeatures);
 }
 
+//******************************************************
 bool hasResults(QObjectPtrList theObjects, const std::set<std::string>& theTypes)
 {
   bool isFoundResultType = false;
@@ -1599,7 +1966,9 @@ std::list<FeaturePtr> allFeatures(const DocumentPtr& theDocument)
     // The order of appending features of the part and the part itself is important
 
     // Append features from a part feature
-    foreach (const ResultPtr& aResult, aFeature->results()) {
+    std::list<ResultPtr> aResults;
+    ModelAPI_Tools::allResults(aFeature, aResults);
+    foreach (const ResultPtr& aResult, aResults) {
       ResultPartPtr aResultPart =
           std::dynamic_pointer_cast<ModelAPI_ResultPart>(aResult);
       if (aResultPart.get() && aResultPart->partDoc().get()) {
@@ -1623,15 +1992,18 @@ std::list<FeaturePtr> toCurrentFeatures(const ObjectPtr& theObject)
   DocumentPtr aDocument = theObject->document();
   std::list<FeaturePtr> anAllFeatures = allFeatures(aDocument);
   // find the object iterator
-  std::list<FeaturePtr>::iterator aObjectIt = std::find(anAllFeatures.begin(), anAllFeatures.end(), theObject);
+  std::list<FeaturePtr>::iterator aObjectIt =
+    std::find(anAllFeatures.begin(), anAllFeatures.end(), theObject);
   if (aObjectIt == anAllFeatures.end())
     return aResult;
   // find the current feature iterator
-  std::list<FeaturePtr>::iterator aCurrentIt = std::find(anAllFeatures.begin(), anAllFeatures.end(), aDocument->currentFeature(true));
+  std::list<FeaturePtr>::iterator aCurrentIt =
+    std::find(anAllFeatures.begin(), anAllFeatures.end(), aDocument->currentFeature(true));
   if (aCurrentIt == anAllFeatures.end())
     return aResult;
   // check the right order
-  if (std::distance(aObjectIt, anAllFeatures.end()) <= std::distance(aCurrentIt, anAllFeatures.end()))
+  if (std::distance(aObjectIt, anAllFeatures.end()) <=
+      std::distance(aCurrentIt, anAllFeatures.end()))
     return aResult;
   // exclude the object
   std::advance(aObjectIt, 1);
@@ -1640,6 +2012,7 @@ std::list<FeaturePtr> toCurrentFeatures(const ObjectPtr& theObject)
   return std::list<FeaturePtr>(aObjectIt, aCurrentIt);
 }
 
+//******************************************************
 bool XGUI_Workshop::canMoveFeature()
 {
   QString anActionId = "MOVE_CMD";
@@ -1662,16 +2035,27 @@ bool XGUI_Workshop::canMoveFeature()
   QObjectPtrList::const_iterator anIt = aObjects.begin(), aLast = aObjects.end();
   for (; anIt != aLast && aCanMove; anIt++) {
     ObjectPtr aObject = *anIt;
-    // 1. Get features placed between selected and current in the document 
+    if (!aObject.get() || !aObject->data().get() || !aObject->data()->isValid()) {
+      aCanMove = false;
+      break;
+    }
+    FeaturePtr aFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(aObject);
+    // only groups can be moved to the end for now (#2451)
+    if (aFeat.get() && aFeat->getKind() != "Group") {
+      aCanMove = false;
+      break;
+    }
+
+    // 1. Get features placed between selected and current in the document
     std::list<FeaturePtr> aFeaturesBetween = toCurrentFeatures(aObject);
     // if aFeaturesBetween is empty it means wrong order or aObject is the current feature
     if (aFeaturesBetween.empty())
       aCanMove = false;
     else {
       std::set<FeaturePtr> aPlacedFeatures(aFeaturesBetween.begin(), aFeaturesBetween.end());
-      // 2. Get all reference features to the selected object in the document 
+      // 2. Get all reference features to the selected object in the document
       std::set<FeaturePtr> aRefFeatures;
-      XGUI_Tools::refsToFeatureInFeatureDocument(aObject, aRefFeatures);
+      ModuleBase_Tools::refsToFeatureInFeatureDocument(aObject, aRefFeatures);
 
       if (aRefFeatures.empty())
         continue;
@@ -1706,19 +2090,28 @@ bool XGUI_Workshop::canBeShaded(const ObjectPtr& theObject) const
 }
 
 //**************************************************************
-bool XGUI_Workshop::canChangeColor() const
+bool XGUI_Workshop::canChangeProperty(const QString& theActionName) const
 {
-  QObjectPtrList aObjects = mySelector->selection()->selectedObjects();
+  if (theActionName == "COLOR_CMD" ||
+      theActionName == "DEFLECTION_CMD"
+#ifdef USE_TRANSPARENCY
+      || theActionName == "TRANSPARENCY_CMD"
+#endif
+      ) {
+    QObjectPtrList aObjects = mySelector->selection()->selectedObjects();
 
-  std::set<std::string> aTypes;
-  aTypes.insert(ModelAPI_ResultGroup::group());
-  aTypes.insert(ModelAPI_ResultConstruction::group());
-  aTypes.insert(ModelAPI_ResultBody::group());
-  aTypes.insert(ModelAPI_ResultPart::group());
+    std::set<std::string> aTypes;
+    aTypes.insert(ModelAPI_ResultGroup::group());
+    aTypes.insert(ModelAPI_ResultConstruction::group());
+    aTypes.insert(ModelAPI_ResultBody::group());
+    aTypes.insert(ModelAPI_ResultPart::group());
 
-  return hasResults(aObjects, aTypes);
+    return hasResults(aObjects, aTypes);
+  }
+  return false;
 }
 
+//******************************************************
 void setColor(ResultPtr theResult, const std::vector<int>& theColor)
 {
   if (!theResult.get())
@@ -1741,7 +2134,7 @@ void XGUI_Workshop::changeColor(const QObjectPtrList& theObjects)
 
   AttributeIntArrayPtr aColorAttr;
   // 1. find the current color of the object. This is a color of AIS presentation
-  // The objects are iterated until a first valid color is found 
+  // The objects are iterated until a first valid color is found
   std::vector<int> aColor;
   foreach(ObjectPtr anObject, theObjects) {
     ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
@@ -1766,7 +2159,7 @@ void XGUI_Workshop::changeColor(const QObjectPtrList& theObjects)
     return;
 
   if (!abortAllOperations())
-  return; 
+  return;
   // 2. show the dialog to change the value
   XGUI_ColorDialog* aDlg = new XGUI_ColorDialog(desktop());
   aDlg->setColor(aColor);
@@ -1787,10 +2180,12 @@ void XGUI_Workshop::changeColor(const QObjectPtrList& theObjects)
   foreach(ObjectPtr anObj, theObjects) {
     ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObj);
     if (aResult.get() != NULL) {
-      ResultCompSolidPtr aCompsolidResult = std::dynamic_pointer_cast<ModelAPI_ResultCompSolid>(aResult);
+      ResultCompSolidPtr aCompsolidResult =
+        std::dynamic_pointer_cast<ModelAPI_ResultCompSolid>(aResult);
       if (aCompsolidResult.get() != NULL) { // change colors for all sub-solids
         for(int i = 0; i < aCompsolidResult->numberOfSubs(); i++) {
-          setColor(aCompsolidResult->subResult(i), !isRandomColor ? aColorResult : aDlg->getRandomColor());
+          setColor(aCompsolidResult->subResult(i), !isRandomColor ? aColorResult :
+                                                                    aDlg->getRandomColor());
         }
       }
       setColor(aResult, !isRandomColor ? aColorResult : aDlg->getRandomColor());
@@ -1800,27 +2195,215 @@ void XGUI_Workshop::changeColor(const QObjectPtrList& theObjects)
   updateCommandStatus();
 }
 
+//**************************************************************
+void setDeflection(ResultPtr theResult, const double theDeflection)
+{
+  if (!theResult.get())
+    return;
+
+  AttributeDoublePtr aDeflectionAttr = theResult->data()->real(ModelAPI_Result::DEFLECTION_ID());
+  if (aDeflectionAttr.get() != NULL)
+    aDeflectionAttr->setValue(theDeflection);
+}
+
+//**************************************************************
+void setTransparency(ResultPtr theResult, double theTransparency)
+{
+  if (!theResult.get())
+    return;
+
+  AttributeDoublePtr anAttribute = theResult->data()->real(ModelAPI_Result::TRANSPARENCY_ID());
+  if (anAttribute.get() != NULL)
+    anAttribute->setValue(theTransparency);
+}
+
+//**************************************************************
+void setTransparency(double theTransparency, const QObjectPtrList& theObjects)
+{
+  foreach(ObjectPtr anObj, theObjects) {
+    ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObj);
+    if (aResult.get() != NULL) {
+      ResultCompSolidPtr aCompsolidResult =
+        std::dynamic_pointer_cast<ModelAPI_ResultCompSolid>(aResult);
+      if (aCompsolidResult.get() != NULL) { // change property for all sub-solids
+        for(int i = 0; i < aCompsolidResult->numberOfSubs(); i++) {
+          setTransparency(aCompsolidResult->subResult(i), theTransparency);
+        }
+      }
+      setTransparency(aResult, theTransparency);
+    }
+  }
+}
+
+//**************************************************************
+void XGUI_Workshop::changeDeflection(const QObjectPtrList& theObjects)
+{
+  AttributeDoublePtr aDoubleAttr;
+  // 1. find the current property of the object. This is a property of AIS presentation
+  // The objects are iterated until a first valid property is found
+  double aDeflection = -1;
+  foreach(ObjectPtr anObject, theObjects) {
+    ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
+    if (aResult.get()) {
+      aDeflection = XGUI_CustomPrs::getResultDeflection(aResult);
+    }
+    else {
+      // TODO: remove the obtaining a property from the AIS object
+      // this does not happen never because:
+      // 1. The property can be changed only on results
+      // 2. The result can be not visualized in the viewer(e.g. Origin Construction)
+      AISObjectPtr anAISObj = myDisplayer->getAISObject(anObject);
+      if (anAISObj.get()) {
+        aDeflection = anAISObj->getDeflection();
+      }
+    }
+    if (aDeflection > 0)
+      break;
+  }
+  if (aDeflection < 0)
+    return;
+
+  if (!abortAllOperations())
+  return;
+  // 2. show the dialog to change the value
+  XGUI_DeflectionDialog* aDlg = new XGUI_DeflectionDialog(desktop());
+  aDlg->setDeflection(aDeflection);
+  aDlg->move(QCursor::pos());
+  bool isDone = aDlg->exec() == QDialog::Accepted;
+  if (!isDone)
+    return;
+
+  // 3. abort the previous operation and start a new one
+  SessionPtr aMgr = ModelAPI_Session::get();
+  QString aDescription = contextMenuMgr()->action("DEFLECTION_CMD")->text();
+  aMgr->startOperation(aDescription.toStdString());
+
+  // 4. set the value to all results
+  aDeflection = aDlg->getDeflection();
+  foreach(ObjectPtr anObj, theObjects) {
+    ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObj);
+    if (aResult.get() != NULL) {
+      ResultCompSolidPtr aCompsolidResult =
+        std::dynamic_pointer_cast<ModelAPI_ResultCompSolid>(aResult);
+      if (aCompsolidResult.get() != NULL) { // change property for all sub-solids
+        for(int i = 0; i < aCompsolidResult->numberOfSubs(); i++) {
+          setDeflection(aCompsolidResult->subResult(i), aDeflection);
+        }
+      }
+      setDeflection(aResult, aDeflection);
+    }
+  }
+  aMgr->finishOperation();
+  updateCommandStatus();
+}
+
+//**************************************************************
+void XGUI_Workshop::changeTransparency(const QObjectPtrList& theObjects)
+{
+  AttributeDoublePtr aDoubleAttr;
+  // 1. find the current property of the object. This is a property of AIS presentation
+  // The objects are iterated until a first valid property is found
+  double aCurrentValue = -1;
+  foreach(ObjectPtr anObject, theObjects) {
+    ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
+    if (aResult.get()) {
+      aCurrentValue = XGUI_CustomPrs::getResultTransparency(aResult);
+    }
+    else {
+      // TODO: remove the obtaining a property from the AIS object
+      // this does not happen never because:
+      // 1. The property can be changed only on results
+      // 2. The result can be not visualized in the viewer(e.g. Origin Construction)
+      AISObjectPtr anAISObj = myDisplayer->getAISObject(anObject);
+      if (anAISObj.get()) {
+        aCurrentValue = anAISObj->getDeflection();
+      }
+    }
+    if (aCurrentValue > 0)
+      break;
+  }
+  if (aCurrentValue < 0)
+    return;
+
+  if (!abortAllOperations())
+  return;
+
+  // 2. show the dialog to change the value
+  XGUI_PropertyDialog* aDlg = new XGUI_PropertyDialog(desktop());
+  aDlg->setWindowTitle("Transparency");
+  XGUI_TransparencyWidget* aTransparencyWidget = new XGUI_TransparencyWidget(aDlg);
+  connect(aTransparencyWidget, SIGNAL(transparencyValueChanged()),
+          this, SLOT(onTransparencyValueChanged()));
+  connect(aTransparencyWidget, SIGNAL(previewStateChanged()),
+          this, SLOT(onPreviewStateChanged()));
+  aDlg->setContent(aTransparencyWidget);
+  aTransparencyWidget->setValue(aCurrentValue);
+
+  // 3. abort the previous operation and start a new one
+  SessionPtr aMgr = ModelAPI_Session::get();
+  QString aDescription = contextMenuMgr()->action("TRANSPARENCY_CMD")->text();
+  aMgr->startOperation(aDescription.toStdString());
+
+  aDlg->move(QCursor::pos());
+  bool isDone = aDlg->exec() == QDialog::Accepted;
+  if (!isDone)
+    return;
+
+  // 4. set the value to all results
+  aCurrentValue = aTransparencyWidget->getValue();
+  setTransparency(aCurrentValue, theObjects);
+
+  aMgr->finishOperation();
+  updateCommandStatus();
+}
+
+//**************************************************************
+void XGUI_Workshop::onTransparencyValueChanged()
+{
+  XGUI_TransparencyWidget* aTransparencyWidget = (XGUI_TransparencyWidget*)sender();
+  if (!aTransparencyWidget || !aTransparencyWidget->isPreviewNeeded())
+    return;
+
+  QObjectPtrList anObjects = mySelector->selection()->selectedObjects();
+  setTransparency(aTransparencyWidget->getValue(), anObjects);
+  Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
+}
+
+//**************************************************************
+void XGUI_Workshop::onPreviewStateChanged()
+{
+  XGUI_TransparencyWidget* aTransparencyWidget = (XGUI_TransparencyWidget*)sender();
+  if (!aTransparencyWidget || !aTransparencyWidget->isPreviewNeeded())
+    return;
+
+  QObjectPtrList anObjects = mySelector->selection()->selectedObjects();
+  setTransparency(aTransparencyWidget->getValue(), anObjects);
+  Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
+}
+
 //**************************************************************
 #define SET_DISPLAY_GROUP(aGroupName, aDisplay) \
 for (int i = 0; i < aDoc->size(aGroupName); i++) { \
   aDoc->object(aGroupName, i)->setDisplayed(aDisplay); \
 }
+
+//******************************************************
 void XGUI_Workshop::showObjects(const QObjectPtrList& theList, bool isVisible)
 {
+  if (isVisible) {
+    std::set<ObjectPtr> anObjects;
+    foreach (ObjectPtr aObj, theList) {
+      anObjects.insert(aObj);
+    }
+    if (!prepareForDisplay(anObjects))
+      return;
+  }
+
   foreach (ObjectPtr aObj, theList) {
-    /*
-    ResultPartPtr aPartRes = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aObj);
-    if (aPartRes) {
-      DocumentPtr aDoc = aPartRes->partDoc();
-      SET_DISPLAY_GROUP(ModelAPI_ResultBody::group(), isVisible)
-      SET_DISPLAY_GROUP(ModelAPI_ResultConstruction::group(), isVisible)
-      SET_DISPLAY_GROUP(ModelAPI_ResultGroup::group(), isVisible)
-    } else {
-    */
-      aObj->setDisplayed(isVisible);
-    //}
+    aObj->setDisplayed(isVisible);
   }
   Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
+  myObjectBrowser->updateAllIndexes();
 }
 
 //**************************************************************
@@ -1832,26 +2415,33 @@ void XGUI_Workshop::showOnlyObjects(const QObjectPtrList& theList)
     if (module()->canEraseObject(aObj))
       aObj->setDisplayed(false);
   }
+  //Do not use eraseAll if you didn't send Redisplay event:
+  //all objects are erased from viewer, but considered as displayed in displayer
+  // Problem in bug 2218
+  Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
+#ifdef HAVE_SALOME
+    //issue #2159 Hide all incomplete behavior
+    viewer()->eraseAll();
+#endif
+
+  std::set<ObjectPtr> anObjects;
+  foreach (ObjectPtr aObj, theList) {
+    anObjects.insert(aObj);
+  }
+
+  if (!prepareForDisplay(anObjects))
+    return;
 
   // Show only objects from the list
   foreach (ObjectPtr aObj, theList) {
-    /*
-    ResultPartPtr aPartRes = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aObj);
-    if (aPartRes) {
-      DocumentPtr aDoc = aPartRes->partDoc();
-      SET_DISPLAY_GROUP(ModelAPI_ResultBody::group(), true)
-      SET_DISPLAY_GROUP(ModelAPI_ResultConstruction::group(), true)
-      SET_DISPLAY_GROUP(ModelAPI_ResultGroup::group(), true)
-    } else {
-    */
-      aObj->setDisplayed(true);
-    //}
+    aObj->setDisplayed(true);
   }
   Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
 
+  // Necessary for update icons in ObjectBrowser on Linux
+  myObjectBrowser->updateAllIndexes();
 }
 
-
 //**************************************************************
 void XGUI_Workshop::registerValidators() const
 {
@@ -1871,7 +2461,7 @@ void XGUI_Workshop::displayDocumentResults(DocumentPtr theDoc)
 //**************************************************************
 void XGUI_Workshop::displayGroupResults(DocumentPtr theDoc, std::string theGroup)
 {
-  for (int i = 0; i < theDoc->size(theGroup); i++) 
+  for (int i = 0; i < theDoc->size(theGroup); i++)
     theDoc->object(theGroup, i)->setDisplayed(true);
     //displayObject(theDoc->object(theGroup, i));
   Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
@@ -1903,16 +2493,26 @@ void XGUI_Workshop::closeDocument()
     anOperation->abort();
     anOperation = operationMgr()->currentOperation();
   }
-  myDisplayer->closeLocalContexts();
+  //myDisplayer->closeLocalContexts();
   myDisplayer->eraseAll();
   objectBrowser()->clearContent();
 
   module()->closeDocument();
+  // we need to clear viewer (with created filters) to do not have problems in 2nd SALOME study
+  module()->clearViewer();
+
+
+  // data model need not process the document's signals about objects modifications as
+  // the document is closed
+  //bool isBlocked = objectBrowser()->dataModel()->blockEventsProcessing(true);
 
   SessionPtr aMgr = ModelAPI_Session::get();
   aMgr->closeAll();
+
+  //objectBrowser()->dataModel()->blockEventsProcessing(isBlocked);
 }
 
+//******************************************************
 void XGUI_Workshop::addHistoryMenu(QObject* theObject, const char* theSignal, const char* theSlot)
 {
   XGUI_HistoryMenu* aMenu = NULL;
@@ -1929,6 +2529,7 @@ void XGUI_Workshop::addHistoryMenu(QObject* theObject, const char* theSignal, co
   connect(aMenu, SIGNAL(actionSelected(int)), this, theSlot);
 }
 
+//******************************************************
 QList<ActionInfo> XGUI_Workshop::processHistoryList(const std::list<std::string>& theList) const
 {
   QList<ActionInfo> aResult;
@@ -1954,19 +2555,36 @@ QList<ActionInfo> XGUI_Workshop::processHistoryList(const std::list<std::string>
   return aResult;
 }
 
+//******************************************************
+void XGUI_Workshop::setStatusBarMessage(const QString& theMessage)
+{
+#ifdef HAVE_SALOME
+  salomeConnector()->putInfo(theMessage, -1);
+#else
+  myMainWindow->putInfo(theMessage, -1);
+#endif
+}
+
+#ifdef HAVE_SALOME
+//******************************************************
 void XGUI_Workshop::synchronizeViewer()
 {
   SessionPtr aMgr = ModelAPI_Session::get();
-  DocumentPtr aDoc = aMgr->activeDocument();
+  QList<DocumentPtr> aDocs;
+  aDocs.append(aMgr->activeDocument());
+  aDocs.append(aMgr->moduleDocument());
 
-  synchronizeGroupInViewer(aDoc, ModelAPI_ResultConstruction::group(), false);
-  synchronizeGroupInViewer(aDoc, ModelAPI_ResultBody::group(), false);
-  synchronizeGroupInViewer(aDoc, ModelAPI_ResultPart::group(), false);
-  synchronizeGroupInViewer(aDoc, ModelAPI_ResultGroup::group(), false);
+  foreach(DocumentPtr aDoc, aDocs) {
+    synchronizeGroupInViewer(aDoc, ModelAPI_ResultConstruction::group(), false);
+    synchronizeGroupInViewer(aDoc, ModelAPI_ResultBody::group(), false);
+    synchronizeGroupInViewer(aDoc, ModelAPI_ResultPart::group(), false);
+    synchronizeGroupInViewer(aDoc, ModelAPI_ResultGroup::group(), false);
+  }
 }
 
-void XGUI_Workshop::synchronizeGroupInViewer(const DocumentPtr& theDoc, 
-                                             const std::string& theGroup, 
+//******************************************************
+void XGUI_Workshop::synchronizeGroupInViewer(const DocumentPtr& theDoc,
+                                             const std::string& theGroup,
                                              bool theUpdateViewer)
 {
   ObjectPtr aObj;
@@ -1985,3 +2603,135 @@ void XGUI_Workshop::synchronizeGroupInViewer(const DocumentPtr& theDoc,
   if (theUpdateViewer)
     myDisplayer->updateViewer();
 }
+#endif
+
+//******************************************************
+void XGUI_Workshop::highlightResults(const QObjectPtrList& theObjects)
+{
+  FeaturePtr aFeature;
+  QObjectPtrList aSelList = theObjects;
+  QObjectPtrList aNewSel;
+  bool aHasHidden = false;
+  foreach(ObjectPtr aObj, theObjects) {
+    aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObj);
+    if (aFeature.get()) {
+      std::list<ResultPtr> aResults;
+      ModelAPI_Tools::allResults(aFeature, aResults);
+      std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aIt;
+      for(aIt = aResults.cbegin(); aIt != aResults.cend(); aIt++) {
+        aHasHidden |= (*aIt)->isConcealed();
+        aSelList.append(*aIt);
+        aNewSel.append(*aIt);
+      }
+    }
+  }
+  if (aSelList.count() > theObjects.count()) {
+    // if something was found
+    bool aBlocked = objectBrowser()->blockSignals(true);
+    objectBrowser()->setObjectsSelected(aSelList);
+    objectBrowser()->blockSignals(aBlocked);
+    objectBrowser()->ensureVisible(aNewSel.first());
+  }
+  if (aHasHidden)
+    QMessageBox::information(desktop(), tr("Find results"),
+                             tr("Results not found"), QMessageBox::Ok);
+}
+
+//******************************************************
+void XGUI_Workshop::highlightFeature(const QObjectPtrList& theObjects)
+{
+  ResultPtr aResult;
+  QObjectPtrList aSelList = theObjects;
+  QObjectPtrList aNewSel;
+  FeaturePtr aFeature;
+  foreach(ObjectPtr aObj, theObjects) {
+    aResult = std::dynamic_pointer_cast<ModelAPI_Result>(aObj);
+    if (aResult.get()) {
+      aFeature = ModelAPI_Feature::feature(aResult);
+      if (aFeature.get()) {
+        aSelList.append(aFeature);
+        aNewSel.append(aFeature);
+      }
+    }
+  }
+  if (aSelList.count() > theObjects.count()) {
+    // if something was found
+    bool aBlocked = objectBrowser()->blockSignals(true);
+    objectBrowser()->setObjectsSelected(aSelList);
+    objectBrowser()->blockSignals(aBlocked);
+    objectBrowser()->ensureVisible(aNewSel.first());
+  }
+}
+
+void XGUI_Workshop::insertFeatureFolder()
+{
+  QObjectPtrList aObjects = mySelector->selection()->selectedObjects();
+  if (aObjects.isEmpty())
+    return;
+  ObjectPtr aObj = aObjects.first();
+  FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObj);
+  if (aFeature.get() == NULL)
+    return;
+  SessionPtr aMgr = ModelAPI_Session::get();
+  DocumentPtr aDoc = aMgr->activeDocument();
+
+  QString aDescription = contextMenuMgr()->action("INSERT_FOLDER_CMD")->text();
+
+  aMgr->startOperation(aDescription.toStdString());
+  aDoc->addFolder(aFeature);
+  aMgr->finishOperation();
+
+  updateCommandStatus();
+}
+
+
+void XGUI_Workshop::insertToFolder(bool isBefore)
+{
+  std::list<FeaturePtr> aFeatures = mySelector->getSelectedFeatures();
+  if (aFeatures.empty())
+    return;
+
+  SessionPtr aMgr = ModelAPI_Session::get();
+  DocumentPtr aDoc = aMgr->activeDocument();
+
+  FolderPtr aFolder = isBefore? aDoc->findFolderAbove(aFeatures):
+                                aDoc->findFolderBelow(aFeatures);
+  if (!aFolder.get())
+    return;
+
+  QString aDescription = contextMenuMgr()->action(
+    isBefore ? "ADD_TO_FOLDER_BEFORE_CMD" : "ADD_TO_FOLDER_AFTER_CMD")->text();
+
+  QMap<ObjectPtr, bool> aStates = myObjectBrowser->getFoldersState(aDoc);
+
+  aMgr->startOperation(aDescription.toStdString());
+  aDoc->moveToFolder(aFeatures, aFolder);
+  aMgr->finishOperation();
+
+  myObjectBrowser->setFoldersState(aStates);
+
+  updateCommandStatus();
+}
+
+void XGUI_Workshop::moveOutFolder(bool isBefore)
+{
+  std::list<FeaturePtr> aFeatures = mySelector->getSelectedFeatures();
+  if (aFeatures.empty())
+    return;
+
+  SessionPtr aMgr = ModelAPI_Session::get();
+  DocumentPtr aDoc = aMgr->activeDocument();
+
+  QString aDescription = contextMenuMgr()->action(
+    isBefore ? "ADD_OUT_FOLDER_BEFORE_CMD" : "ADD_OUT_FOLDER_AFTER_CMD")->text();
+
+  QMap<ObjectPtr, bool> aStates = myObjectBrowser->getFoldersState(aDoc);
+
+  aMgr->startOperation(aDescription.toStdString());
+  aDoc->removeFromFolder(aFeatures, isBefore);
+  aMgr->finishOperation();
+
+  myObjectBrowser->setFoldersState(aStates);
+
+  updateCommandStatus();
+}