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Initial implementation of support of any level of hierarchy in Result Bodies.
[modules/shaper.git] / src / ModuleBase / ModuleBase_Tools.cpp
index 11842fe9bc844e58f969937cad1bf3b20ccbeb07..996f4b1810414d9ac0458fdc600198baf841ad07 100755 (executable)
@@ -1,8 +1,22 @@
-// Copyright (C) 2014-20xx CEA/DEN, EDF R&D
-
-// File:        ModuleBase_Tools.cpp
-// Created:     11 July 2014
-// Author:      Vitaly Smetannikov
+// 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 "ModuleBase_Tools.h"
 
 #include <ModuleBase_WidgetFactory.h>
 #include <ModuleBase_IWorkshop.h>
 #include <ModuleBase_IModule.h>
+#include <ModuleBase_IViewer.h>
 #include <ModuleBase_IconFactory.h>
+#include <ModuleBase_ResultPrs.h>
+#include <ModuleBase_ViewerPrs.h>
 
 #include <ModelAPI_Attribute.h>
 #include <ModelAPI_AttributeRefAttr.h>
 #include <ModelAPI_AttributeRefAttrList.h>
 #include <ModelAPI_ResultPart.h>
 #include <ModelAPI_ResultConstruction.h>
+#include <ModelAPI_AttributeString.h>
+#include <ModelAPI_Expression.h>
 #include <Events_Loop.h>
 
 #include <ModelAPI_Data.h>
 #include <ModelAPI_Result.h>
-#include <ModelAPI_ResultCompSolid.h>
 #include <ModelAPI_ResultParameter.h>
 #include <ModelAPI_Tools.h>
 #include <ModelAPI_Session.h>
 #include <ModelAPI_Events.h>
+#include <ModelAPI_Folder.h>
 
+#include <ModelGeomAlgo_Point2D.h>
+
+#include <StdSelect_BRepOwner.hxx>
 #include <TopoDS_Iterator.hxx>
+#include <AIS_InteractiveContext.hxx>
+#include <Prs3d_LineAspect.hxx>
+#include <Prs3d_PlaneAspect.hxx>
 
 #include <GeomDataAPI_Point2D.h>
-#include <Events_Error.h>
+#include <Events_InfoMessage.h>
+#include <GeomAPI_ShapeExplorer.h>
 
 #include <Config_PropManager.h>
+#include <Config_Translator.h>
+
+#include <Prs3d_PointAspect.hxx>
+#include <Graphic3d_AspectMarker3d.hxx>
+
+#include <Image_AlienPixMap.hxx>
 
 #include <QWidget>
 #include <QLayout>
 #include <QApplication>
 #include <QMessageBox>
 #include <QAction>
+#include <QTextCodec>
 
 #include <sstream>
 #include <string>
 
+#ifdef WIN32
+#pragma warning(disable : 4996) // for getenv
+#endif
+
 const double tolerance = 1e-7;
+const double DEFAULT_DEVIATION_COEFFICIENT = 1.e-4;
 
 //#define DEBUG_ACTIVATE_WINDOW
 //#define DEBUG_SET_FOCUS
-//#define DEBUG_SELECTION_INFO
-
-#ifdef DEBUG_SELECTION_INFO
-#include <ModuleBase_ISelection.h>
-#include <ModuleBase_ViewerPrs.h>
 
-#include <AIS_InteractiveContext.hxx>
-#include <AIS_ListOfInteractive.hxx>
-#include <AIS_ListIteratorOfListOfInteractive.hxx>
-#include <AIS_Shape.hxx>
-#include <TopoDS_Shape.hxx>
-#include <AIS_LocalContext.hxx>
-#include <NCollection_List.hxx>
-#include <StdSelect_BRepOwner.hxx>
-#include <TColStd_ListOfInteger.hxx>
-#include <TColStd_ListIteratorOfListOfInteger.hxx>
+#ifdef WIN32
+# define FSEP "\\"
+#else
+# define FSEP "/"
 #endif
 
 namespace ModuleBase_Tools {
@@ -113,7 +140,10 @@ void zeroMargins(QLayout* theLayout)
 
 void activateWindow(QWidget* theWidget, const QString& theInfo)
 {
-  theWidget->activateWindow();
+  if (theWidget) {
+    theWidget->activateWindow();
+    theWidget->raise();
+  }
 
 #ifdef DEBUG_ACTIVATE_WINDOW
   qDebug(QString("activateWindow: %1").arg(theInfo).toStdString().c_str());
@@ -122,8 +152,10 @@ void activateWindow(QWidget* theWidget, const QString& theInfo)
 
 void setFocus(QWidget* theWidget, const QString& theInfo)
 {
+  activateWindow(theWidget);
   theWidget->setFocus();
-
+  // rectangle of focus is not visible on tool button widgets
+  theWidget->repaint();
 #ifdef DEBUG_SET_FOCUS
   qDebug(QString("setFocus: %1").arg(theInfo).toStdString().c_str());
 #endif
@@ -199,7 +231,7 @@ QPixmap lighter(const QString& theIcon, const int theLighterValue)
 
 void setSpinText(ModuleBase_ParamSpinBox* theSpin, const QString& theText)
 {
-  if (theSpin->text() == theText) 
+  if (theSpin->text() == theText)
     return;
   // In order to avoid extra text setting because it will
   // reset cursor position in control
@@ -261,6 +293,15 @@ QAction* createAction(const QIcon& theIcon, const QString& theText,
   return anAction;
 }
 
+#ifdef _DEBUG
+QString objectName(const ObjectPtr& theObj)
+{
+  if (!theObj.get())
+    return "";
+
+  return theObj->data()->name().c_str();
+}
+
 QString objectInfo(const ObjectPtr& theObj, const bool isUseAttributesInfo)
 {
   QString aFeatureStr = "feature";
@@ -293,221 +334,23 @@ QString objectInfo(const ObjectPtr& theObj, const bool isUseAttributesInfo)
                                                                                        .c_str());
     }
     if (isUseAttributesInfo) {
-      std::list<AttributePtr> anAttrs = aFeature->data()->attributes("");
-      std::list<AttributePtr>::const_iterator anIt = anAttrs.begin(), aLast = anAttrs.end();
-      QStringList aValues;
-      for(; anIt != aLast; anIt++) {
-        AttributePtr anAttr = *anIt;
-        QString aValue = "not defined";
-        std::string aType = anAttr->attributeType();
-        if (aType == GeomDataAPI_Point2D::typeId()) {
-          std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
-                                                                                         anAttr);
-          if (aPoint.get())
-            aValue = QString("(%1, %2)").arg(aPoint->x()).arg(aPoint->y());
-        }
-        else if (aType == ModelAPI_AttributeRefAttr::typeId()) {
-        }
-
-        aValues.push_back(QString("%1: %2").arg(anAttr->id().c_str()).arg(aValue).toStdString().c_str());
-      }
-      if (!aValues.empty())
-        aFeatureStr.append(QString(", attributes: %1").arg(aValues.join(", ").toStdString().c_str()));
+      std::set<std::shared_ptr<ModelAPI_Attribute> > anAttributes;
+      std::string aPointsInfo = ModelGeomAlgo_Point2D::getPontAttributesInfo(aFeature,
+                                                                          anAttributes).c_str();
+      if (!aPointsInfo.empty())
+        aFeatureStr.append(QString(", attributes: %1")
+          .arg(aPointsInfo.c_str()).toStdString().c_str());
     }
   }
 
   return aFeatureStr;
 }
-
-#ifdef DEBUG_SELECTION_INFO
-QString getShapeTypeInfo(const int theType)
-{
-  QString anInfo = "Undefined";
-  switch(theType) {
-    case TopAbs_COMPOUND:  anInfo = "compound"; break;
-    case TopAbs_COMPSOLID: anInfo = "compsolid"; break;
-    case TopAbs_SOLID:     anInfo = "solid"; break;
-    case TopAbs_SHELL:     anInfo = "shell"; break;
-    case TopAbs_FACE:      anInfo = "face"; break;
-    case TopAbs_WIRE:      anInfo = "wire"; break;
-    case TopAbs_EDGE:      anInfo = "edge"; break;
-    case TopAbs_VERTEX:    anInfo = "vertex"; break;
-    case TopAbs_SHAPE:     anInfo = "shape"; break;
-    default: break;
-  }
-  return anInfo;
-}
-
-QString getModeInfo(const int theMode)
-{
-  QString anInfo = "Undefined";
-  switch(theMode) {
-    case 0: anInfo = "SHAPE(0)"; break;
-    case 1: anInfo = "VERTEX(1)"; break;
-    case 2: anInfo = "EDGE(2)"; break;
-    case 3: anInfo = "WIRE(3)"; break;
-    case 4: anInfo = "FACE(4)"; break;
-    case 5: anInfo = "SHELL(5)"; break;
-    case 6: anInfo = "SOLID(6)"; break;
-    case 7: anInfo = "COMPSOLID(7)"; break;
-    case 8: anInfo = "COMPOUND(8)"; break;
-    case 100: anInfo = "Sel_Mode_First(100)"; break; //SketcherPrs_Tools
-    case 101: anInfo = "Sel_Constraint(101)"; break;
-    case 102: anInfo = "Sel_Dimension_All(102)"; break;
-    case 103: anInfo = "Sel_Dimension_Line(103)"; break;
-    case 104: anInfo = "Sel_Dimension_Text(104)"; break;
-    default: break;
-  }
-  return anInfo;
-}
-
-QString displayedInteractiveObjects(Handle(AIS_InteractiveContext)& theContext,
-                                    const bool theShapeInfoOnly = true)
-{
-  if (theContext.IsNull())
-    return "";
-  AIS_ListOfInteractive aListOfIO;
-  theContext->DisplayedObjects(aListOfIO, false);
-  QStringList anObjects;
-  AIS_ListIteratorOfListOfInteractive aIt;
-  for (aIt.Initialize(aListOfIO); aIt.More(); aIt.Next()) {
-    Handle(AIS_InteractiveObject) anAISIO = aIt.Value();
-    Handle(AIS_Shape) aShapePrs = Handle(AIS_Shape)::DownCast(anAISIO);
-    if (theShapeInfoOnly && aShapePrs.IsNull())
-      continue;
-
-    QString anInfo = "IO";
-    std::ostringstream aPtrStr;
-    aPtrStr << "[" << anAISIO.Access() << "]";
-    anInfo += aPtrStr.str().c_str();
-
-    if (!aShapePrs.IsNull()) {
-      const TopoDS_Shape& aShape = aShapePrs->Shape();
-      if (aShape.IsNull())
-        Events_Error::throwException("An empty AIS presentation");
-      else
-        anInfo += QString(", shape type: %1").arg(getShapeTypeInfo(aShape.ShapeType()));
-    }
-    TColStd_ListOfInteger aTColModes;
-    theContext->ActivatedModes(anAISIO, aTColModes);
-    TColStd_ListIteratorOfListOfInteger itr( aTColModes );
-    QIntList aModesActivatedForIO;
-    bool isDeactivated = false;
-    QStringList aModes;
-    for (; itr.More(); itr.Next() ) {
-      Standard_Integer aMode = itr.Value();
-      aModes.append(getModeInfo(aMode));
-      //int aShapeMode = (aMode > 8)? aMode : AIS_Shape::SelectionType(aMode);
-    }
-    if (aModes.size() > 0)
-      anInfo += QString(", activated modes: %1").arg(aModes.join(", "));
-
-    anObjects += anInfo;
-  }
-  QString aValue = QString("displayedIO[%1]").arg(anObjects.size());
-  if (anObjects.size() > 0)
-    aValue += QString(":\n  %1").arg(anObjects.join("\n  "));
-  return aValue;
-}
-
-QString activeOwners(Handle(AIS_InteractiveContext)& theContext, const bool theShapeInfoOnly = true)
-{
-  if (theContext.IsNull())
-    return "";
-  Handle(AIS_LocalContext) aLContext = theContext->LocalContext();
-  TCollection_AsciiString aSelectionName = aLContext->SelectionName();
-  aLContext->UnhilightPicked(Standard_False);
-
-  NCollection_List<Handle(SelectBasics_EntityOwner)> anActiveOwners;
-  aLContext->MainSelector()->ActiveOwners(anActiveOwners);
-  NCollection_List<Handle(SelectBasics_EntityOwner)>::Iterator anOwnersIt (anActiveOwners);
-  Handle(SelectMgr_EntityOwner) anOwner;
-  QStringList anObjects;
-  for (; anOwnersIt.More(); anOwnersIt.Next()) {
-    anOwner = Handle(SelectMgr_EntityOwner)::DownCast (anOwnersIt.Value());
-    Handle(StdSelect_BRepOwner) BROwnr = Handle(StdSelect_BRepOwner)::DownCast(anOwner);
-    if (theShapeInfoOnly && BROwnr.IsNull())
-      continue;
-
-    QString anInfo = "Owner";
-    std::ostringstream aPtrStr;
-    aPtrStr << "[" << anOwner.Access() << "]";
-    anInfo += aPtrStr.str().c_str();
-
-    Handle(AIS_InteractiveObject) aAISObj = 
-          Handle(AIS_InteractiveObject)::DownCast(anOwner->Selectable());
-    if (!aAISObj.IsNull()) {
-      std::ostringstream aPtrStr;
-      aPtrStr << "[" << aAISObj.Access() << "]";
-      anInfo += QString(", selectable(IO): %1").arg(aPtrStr.str().c_str());
-    }
-
-    if (!BROwnr.IsNull() && BROwnr->HasShape()) {
-      const TopoDS_Shape& aShape = BROwnr->Shape();
-      if (aShape.IsNull())
-        Events_Error::throwException("An empty AIS presentation");
-      else
-        anInfo += QString(", shape type: %1").arg(getShapeTypeInfo(aShape.ShapeType()));
-    }
-    anObjects += anInfo;
-  }
-  QString aValue = QString("activeOwners[%1]").arg(anObjects.size());
-  if (anObjects.size() > 0)
-    aValue += QString(":\n  %1").arg(anObjects.join("\n  "));
-  return aValue;
-}
-
-QString selectedOwners(Handle(AIS_InteractiveContext)& theContext, const bool theShapeInfoOnly = true)
-{
-  QStringList anObjects;
-  if (theContext.IsNull())
-    return "";
-
-  QList<long> aSelectedIds; // Remember of selected address in order to avoid duplicates
-  for (theContext->InitSelected(); theContext->MoreSelected(); theContext->NextSelected()) {
-    Handle(SelectMgr_EntityOwner) anOwner = theContext->SelectedOwner();
-    Handle(StdSelect_BRepOwner) BROwnr = Handle(StdSelect_BRepOwner)::DownCast(anOwner);
-    if (theShapeInfoOnly && BROwnr.IsNull())
-      continue;
-
-    if (aSelectedIds.contains((long)anOwner.Access()))
-      continue;
-    aSelectedIds.append((long)anOwner.Access());
-
-    QString anInfo = "Owner";
-    std::ostringstream aPtrStr;
-    aPtrStr << "[" << anOwner.Access() << "]";
-    anInfo += aPtrStr.str().c_str();
-
-    if (!BROwnr.IsNull() && BROwnr->HasShape()) {
-      const TopoDS_Shape& aShape = BROwnr->Shape();
-      anInfo += QString(", shape type = %1").arg(getShapeTypeInfo(aShape.ShapeType()));
-    }
-    anObjects += anInfo;
-  }
-  QString aValue = QString("selectedOwners[%1]").arg(anObjects.size());
-  if (anObjects.size() > 0)
-    aValue += QString(":\n  %1").arg(anObjects.join("\n  "));
-  return aValue;
-}
 #endif
 
-void selectionInfo(Handle(AIS_InteractiveContext)& theContext, const std::string& thePrefix)
-{
-#ifdef DEBUG_SELECTION_INFO
-  QString aValue = QString("\n\n\nDEBUG_SELECTION_INFO for '%1'\n%2\n%3\n%4")
-                                              .arg(thePrefix.c_str())
-                                              .arg(displayedInteractiveObjects(theContext))
-                                              .arg(activeOwners(theContext))
-                                              .arg(selectedOwners(theContext));
-  qDebug(aValue.toStdString().c_str());
-#endif
-}
-
-typedef QMap<QString, TopAbs_ShapeEnum> ShapeTypes;
+typedef QMap<QString, int> ShapeTypes;
 static ShapeTypes myShapeTypes;
 
-TopAbs_ShapeEnum shapeType(const QString& theType)
+int shapeType(const QString& theType)
 {
   if (myShapeTypes.count() == 0) {
     myShapeTypes["compound"]   = TopAbs_COMPOUND;
@@ -526,62 +369,106 @@ TopAbs_ShapeEnum shapeType(const QString& theType)
     myShapeTypes["edges"]      = TopAbs_EDGE;
     myShapeTypes["vertex"]     = TopAbs_VERTEX;
     myShapeTypes["vertices"]   = TopAbs_VERTEX;
-    myShapeTypes["objects"]    = TopAbs_SHAPE;
+    myShapeTypes["object"]     = ModuleBase_ResultPrs::Sel_Result;
+    myShapeTypes["objects"]    = ModuleBase_ResultPrs::Sel_Result;
   }
   QString aType = theType.toLower();
   if(myShapeTypes.contains(aType))
     return myShapeTypes[aType];
-  Events_Error::send("Shape type defined in XML is not implemented!");
+  Events_InfoMessage("ModuleBase_Tools", "Shape type defined in XML is not implemented!").send();
   return TopAbs_SHAPE;
 }
 
 void checkObjects(const QObjectPtrList& theObjects, bool& hasResult, bool& hasFeature,
-                  bool& hasParameter, bool& hasCompositeOwner)
+                  bool& hasParameter, bool& hasCompositeOwner, bool& hasResultInHistory,
+                  bool& hasFolder)
 {
   hasResult = false;
   hasFeature = false;
   hasParameter = false;
   hasCompositeOwner = false;
+  hasResultInHistory = false;
+  hasFolder = false;
   foreach(ObjectPtr aObj, theObjects) {
     FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObj);
     ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(aObj);
+    FolderPtr aFolder = std::dynamic_pointer_cast<ModelAPI_Folder>(aObj);
     ResultParameterPtr aConstruction = std::dynamic_pointer_cast<ModelAPI_ResultParameter>(aResult);
 
     hasResult |= (aResult.get() != NULL);
     hasFeature |= (aFeature.get() != NULL);
+    hasFolder |= (aFolder.get() != NULL);
     hasParameter |= (aConstruction.get() != NULL);
-    if (hasFeature) 
+    if (hasFeature)
       hasCompositeOwner |= (ModelAPI_Tools::compositeOwner(aFeature) != NULL);
-    if (hasFeature && hasResult  && hasParameter && hasCompositeOwner)
+
+    if (!hasResultInHistory && aResult.get()) {
+      FeaturePtr aFeature = ModelAPI_Feature::feature(aResult);
+      hasResultInHistory = aFeature.get() && aFeature->isInHistory();
+    }
+
+    if (hasFeature && hasResult  && hasParameter && hasCompositeOwner && hasFeature)
       break;
   }
 }
 
-void setDefaultDeviationCoefficient(const std::shared_ptr<ModelAPI_Result>& theResult,
+/*bool setDefaultDeviationCoefficient(std::shared_ptr<GeomAPI_Shape> theGeomShape)
+{
+  if (!theGeomShape.get())
+    return false;
+  // if the shape could not be exploded on faces, it contains only wires, edges, and vertices
+  // correction of deviation for them should not influence to the application performance
+  GeomAPI_ShapeExplorer anExp(theGeomShape, GeomAPI_Shape::FACE);
+  bool anEmpty = anExp.empty();
+  return !anExp.more();
+}*/
+
+/*void setDefaultDeviationCoefficient(const std::shared_ptr<ModelAPI_Result>& theResult,
                                     const Handle(Prs3d_Drawer)& theDrawer)
 {
   if (!theResult.get())
     return;
-
-  if (theResult->groupName() == ModelAPI_ResultConstruction::group())
-    theDrawer->SetDeviationCoefficient(1.e-4);
+  bool aUseDeviation = false;
+
+  std::string aResultGroup = theResult->groupName();
+  if (aResultGroup == ModelAPI_ResultConstruction::group())
+    aUseDeviation = true;
+  else if (aResultGroup == ModelAPI_ResultBody::group()) {
+    GeomShapePtr aGeomShape = theResult->shape();
+    if (aGeomShape.get())
+      aUseDeviation = setDefaultDeviationCoefficient(aGeomShape);
+  }
+  if (aUseDeviation)
+    theDrawer->SetDeviationCoefficient(DEFAULT_DEVIATION_COEFFICIENT);
 }
-
+*/
 void setDefaultDeviationCoefficient(const TopoDS_Shape& theShape,
                                     const Handle(Prs3d_Drawer)& theDrawer)
 {
   if (theShape.IsNull())
     return;
-  TopAbs_ShapeEnum aType = theShape.ShapeType();
-  if ((aType == TopAbs_EDGE) || (aType == TopAbs_WIRE)) 
-    theDrawer->SetDeviationCoefficient(1.e-4);
+
+  std::shared_ptr<GeomAPI_Shape> aGeomShape(new GeomAPI_Shape());
+  aGeomShape->setImpl(new TopoDS_Shape(theShape));
+
+  // if the shape could not be exploded on faces, it contains only wires, edges, and vertices
+  // correction of deviation for them should not influence to the application performance
+  GeomAPI_ShapeExplorer anExp(aGeomShape, GeomAPI_Shape::FACE);
+  bool isConstruction = !anExp.more();
+
+  double aDeflection;
+  if (isConstruction)
+    aDeflection = Config_PropManager::real("Visualization", "construction_deflection");
+  else
+    aDeflection = Config_PropManager::real("Visualization", "body_deflection");
+
+  theDrawer->SetDeviationCoefficient(aDeflection);
 }
 
 Quantity_Color color(const std::string& theSection,
-                     const std::string& theName,
-                     const std::string& theDefault)
+                     const std::string& theName)
 {
-  std::vector<int> aColor = Config_PropManager::color(theSection, theName, theDefault);
+  std::vector<int> aColor = Config_PropManager::color(theSection, theName);
   return Quantity_Color(aColor[0] / 255., aColor[1] / 255., aColor[2] / 255., Quantity_TOC_RGB);
 }
 
@@ -590,17 +477,20 @@ ObjectPtr getObject(const AttributePtr& theAttribute)
   ObjectPtr anObject;
   std::string anAttrType = theAttribute->attributeType();
   if (anAttrType == ModelAPI_AttributeRefAttr::typeId()) {
-    AttributeRefAttrPtr anAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+    AttributeRefAttrPtr anAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
     if (anAttr != NULL && anAttr->isObject())
       anObject = anAttr->object();
   }
   if (anAttrType == ModelAPI_AttributeSelection::typeId()) {
-    AttributeSelectionPtr anAttr = std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
+    AttributeSelectionPtr anAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
     if (anAttr != NULL)
       anObject = anAttr->context();
   }
   if (anAttrType == ModelAPI_AttributeReference::typeId()) {
-    AttributeReferencePtr anAttr = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
+    AttributeReferencePtr anAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
     if (anAttr.get() != NULL)
       anObject = anAttr->value();
   }
@@ -633,6 +523,18 @@ TopAbs_ShapeEnum getCompoundSubType(const TopoDS_Shape& theShape)
   return aShapeType;
 }
 
+TopoDS_Shape getSelectedShape(const std::shared_ptr<ModuleBase_ViewerPrs>& thePrs)
+{
+  if (thePrs->shape().get())
+    return thePrs->shape()->impl<TopoDS_Shape>();
+
+  Handle(StdSelect_BRepOwner) anOwner = Handle(StdSelect_BRepOwner)::DownCast(thePrs->owner());
+  if (!anOwner.IsNull())
+    return anOwner->Shape();
+
+  return TopoDS_Shape();
+}
+
 void getParameters(QStringList& theParameters)
 {
   theParameters.clear();
@@ -657,7 +559,8 @@ void getParameters(QStringList& theParameters)
   }
 }
 
-std::string findGreedAttribute(ModuleBase_IWorkshop* theWorkshop, const FeaturePtr& theFeature)
+std::string findGreedAttribute(ModuleBase_IWorkshop* theWorkshop,
+                               const FeaturePtr& theFeature)
 {
   std::string anAttributeId;
 
@@ -682,14 +585,16 @@ bool hasObject(const AttributePtr& theAttribute, const ObjectPtr& theObject,
 
   std::string aType = theAttribute->attributeType();
   if (aType == ModelAPI_AttributeReference::typeId()) {
-    AttributeReferencePtr aRef = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
+    AttributeReferencePtr aRef =
+      std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
     ObjectPtr aObject = aRef->value();
     aHasObject = aObject && aObject->isSame(theObject);
     //if (!(aObject && aObject->isSame(theObject))) {
     //  aRef->setValue(theObject);
     //}
   } else if (aType == ModelAPI_AttributeRefAttr::typeId()) {
-    AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+    AttributeRefAttrPtr aRefAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 
     AttributePtr anAttribute = theWorkshop->module()->findAttribute(theObject, theShape);
     if (anAttribute.get()) {
@@ -715,17 +620,17 @@ bool hasObject(const AttributePtr& theAttribute, const ObjectPtr& theObject,
                          std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(theAttribute);
     ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(theObject);
     aHasObject = aSelectionListAttr->isInList(aResult, theShape, theTemporarily);
-    //if (!theCheckIfAttributeHasObject || !aSelectionListAttr->isInList(aResult, theShape, theTemporarily))
-    //  aSelectionListAttr->append(aResult, theShape, theTemporarily);
   }
   else if (aType == ModelAPI_AttributeRefList::typeId()) {
-    AttributeRefListPtr aRefListAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
+    AttributeRefListPtr aRefListAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
     aHasObject = aRefListAttr->isInList(theObject);
     //if (!theCheckIfAttributeHasObject || !aRefListAttr->isInList(theObject))
     //  aRefListAttr->append(theObject);
   }
   else if (aType == ModelAPI_AttributeRefAttrList::typeId()) {
-    AttributeRefAttrListPtr aRefAttrListAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttrList>(theAttribute);
+    AttributeRefAttrListPtr aRefAttrListAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeRefAttrList>(theAttribute);
     AttributePtr anAttribute = theWorkshop->module()->findAttribute(theObject, theShape);
 
     if (anAttribute.get()) {
@@ -742,22 +647,25 @@ bool hasObject(const AttributePtr& theAttribute, const ObjectPtr& theObject,
   return aHasObject;
 }
 
-void setObject(const AttributePtr& theAttribute, const ObjectPtr& theObject,
+bool setObject(const AttributePtr& theAttribute, const ObjectPtr& theObject,
                const GeomShapePtr& theShape, ModuleBase_IWorkshop* theWorkshop,
                const bool theTemporarily, const bool theCheckIfAttributeHasObject)
 {
   if (!theAttribute.get())
-    return;
+    return false;
 
+  bool isDone = true;
   std::string aType = theAttribute->attributeType();
   if (aType == ModelAPI_AttributeReference::typeId()) {
-    AttributeReferencePtr aRef = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
+    AttributeReferencePtr aRef =
+      std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
     ObjectPtr aObject = aRef->value();
     if (!(aObject && aObject->isSame(theObject))) {
       aRef->setValue(theObject);
     }
   } else if (aType == ModelAPI_AttributeRefAttr::typeId()) {
-    AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+    AttributeRefAttrPtr aRefAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 
     AttributePtr anAttribute = theWorkshop->module()->findAttribute(theObject, theShape);
     if (anAttribute.get())
@@ -780,16 +688,23 @@ void setObject(const AttributePtr& theAttribute, const ObjectPtr& theObject,
     AttributeSelectionListPtr aSelectionListAttr =
                          std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(theAttribute);
     ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(theObject);
-    if (!theCheckIfAttributeHasObject || !aSelectionListAttr->isInList(aResult, theShape, theTemporarily))
+    if (!theCheckIfAttributeHasObject ||
+        !aSelectionListAttr->isInList(aResult, theShape, theTemporarily))
       aSelectionListAttr->append(aResult, theShape, theTemporarily);
   }
   else if (aType == ModelAPI_AttributeRefList::typeId()) {
-    AttributeRefListPtr aRefListAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
-    if (!theCheckIfAttributeHasObject || !aRefListAttr->isInList(theObject))
-      aRefListAttr->append(theObject);
+    AttributeRefListPtr aRefListAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
+    if (!theCheckIfAttributeHasObject || !aRefListAttr->isInList(theObject)) {
+      if (theObject.get())
+        aRefListAttr->append(theObject);
+      else
+        isDone = false;
+    }
   }
   else if (aType == ModelAPI_AttributeRefAttrList::typeId()) {
-    AttributeRefAttrListPtr aRefAttrListAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttrList>(theAttribute);
+    AttributeRefAttrListPtr aRefAttrListAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeRefAttrList>(theAttribute);
     AttributePtr anAttribute = theWorkshop->module()->findAttribute(theObject, theShape);
 
     if (anAttribute.get()) {
@@ -797,10 +712,15 @@ void setObject(const AttributePtr& theAttribute, const ObjectPtr& theObject,
         aRefAttrListAttr->append(anAttribute);
     }
     else {
-      if (!theCheckIfAttributeHasObject || !aRefAttrListAttr->isInList(theObject))
-        aRefAttrListAttr->append(theObject);
+      if (!theCheckIfAttributeHasObject || !aRefAttrListAttr->isInList(theObject)) {
+        if (theObject.get())
+          aRefAttrListAttr->append(theObject);
+        else
+          isDone = false;
+      }
     }
   }
+  return isDone;
 }
 
 GeomShapePtr getShape(const AttributePtr& theAttribute, ModuleBase_IWorkshop* theWorkshop)
@@ -812,7 +732,8 @@ GeomShapePtr getShape(const AttributePtr& theAttribute, ModuleBase_IWorkshop* th
   std::string aType = theAttribute->attributeType();
   if (aType == ModelAPI_AttributeReference::typeId()) {
   } else if (aType == ModelAPI_AttributeRefAttr::typeId()) {
-    AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+    AttributeRefAttrPtr aRefAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
     if (aRefAttr.get() && !aRefAttr->isObject()) {
       AttributePtr anAttribute = aRefAttr->attr();
       aShape = theWorkshop->module()->findShape(anAttribute);
@@ -822,6 +743,8 @@ GeomShapePtr getShape(const AttributePtr& theAttribute, ModuleBase_IWorkshop* th
                                                                                  (theAttribute);
     aShape = aSelectAttr->value();
   }
+  else // Geom2D point processing
+    aShape = theWorkshop->module()->findShape(theAttribute);
   return aShape;
 }
 
@@ -829,7 +752,12 @@ void flushUpdated(ObjectPtr theObject)
 {
   blockUpdateViewer(true);
 
+  // Fix the problem of not previewed results of constraints applied. Flush Create/Delete
+  // (for the sketch result) to start processing of the sketch in the solver.
+  // TODO: these flushes should be moved in a separate method provided by Model
+  Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_CREATED));
   Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
+  Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_DELETED));
 
   blockUpdateViewer(false);
 }
@@ -893,7 +821,20 @@ QString wrapTextByWords(const QString& theValue, QWidget* theWidget,
 }
 
 //**************************************************************
-void refsToFeatureInFeatureDocument(const ObjectPtr& theObject, std::set<FeaturePtr>& theRefFeatures)
+QLocale doubleLocale()
+{
+  // VSR 01/07/2010: Disable thousands separator for spin box
+  // (to avoid inconsistency of double-2-string and string-2-double conversion)
+  QLocale aLocale;
+  aLocale.setNumberOptions(aLocale.numberOptions() |
+                           QLocale::OmitGroupSeparator |
+                           QLocale::RejectGroupSeparator);
+  return aLocale;
+}
+
+//**************************************************************
+void refsToFeatureInFeatureDocument(const ObjectPtr& theObject,
+                                    std::set<FeaturePtr>& theRefFeatures)
 {
   FeaturePtr aFeature = ModelAPI_Feature::feature(theObject);
   if (aFeature.get()) {
@@ -905,7 +846,7 @@ void refsToFeatureInFeatureDocument(const ObjectPtr& theObject, std::set<Feature
 
 
 //**************************************************************
-bool isSubOfComposite(const ObjectPtr& theObject)
+/*bool isSubOfComposite(const ObjectPtr& theObject)
 {
   bool isSub = false;
   std::set<FeaturePtr> aRefFeatures;
@@ -916,10 +857,10 @@ bool isSubOfComposite(const ObjectPtr& theObject)
     isSub = isSubOfComposite(theObject, *anIt);
   }
   return isSub;
-}
+}*/
 
 //**************************************************************
-bool isSubOfComposite(const ObjectPtr& theObject, const FeaturePtr& theFeature)
+/*bool isSubOfComposite(const ObjectPtr& theObject, const FeaturePtr& theFeature)
 {
   bool isSub = false;
   CompositeFeaturePtr aComposite = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
@@ -935,6 +876,18 @@ bool isSubOfComposite(const ObjectPtr& theObject, const FeaturePtr& theFeature)
     }
   }
   return isSub;
+}*/
+
+//**************************************************************
+ResultPtr firstResult(const ObjectPtr& theObject)
+{
+  ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(theObject);
+  if (!aResult.get()) {
+    FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theObject);
+    if (aFeature.get())
+      aResult = aFeature->firstResult();
+  }
+  return aResult;
 }
 
 //**************************************************************
@@ -952,15 +905,44 @@ bool isFeatureOfResult(const FeaturePtr& theFeature, const std::string& theGroup
   return aFirstResult->groupName() == theGroupOfResult;
 }
 
+//**************************************************************
+bool hasModuleDocumentFeature(const std::set<FeaturePtr>& theFeatures)
+{
+  bool aFoundModuleDocumentObject = false;
+  DocumentPtr aModuleDoc = ModelAPI_Session::get()->moduleDocument();
+
+  std::set<FeaturePtr>::const_iterator anIt = theFeatures.begin(), aLast = theFeatures.end();
+  for (; anIt != aLast && !aFoundModuleDocumentObject; anIt++) {
+    FeaturePtr aFeature = *anIt;
+    ResultPtr aResult = ModuleBase_Tools::firstResult(aFeature);
+    if (aResult.get() && aResult->groupName() == ModelAPI_ResultPart::group())
+      continue;
+    aFoundModuleDocumentObject = aFeature->document() == aModuleDoc;
+  }
+
+  return aFoundModuleDocumentObject;
+}
+
 //**************************************************************
 bool askToDelete(const std::set<FeaturePtr> theFeatures,
                  const std::map<FeaturePtr, std::set<FeaturePtr> >& theReferences,
                  QWidget* theParent,
-                 std::set<FeaturePtr>& theReferencesToDelete)
+                 std::set<FeaturePtr>& theReferencesToDelete,
+                 const std::string& thePrefixInfo)
 {
+  QString aNotActivatedDocWrn;
+  std::string aNotActivatedNames;
+  if (!ModelAPI_Tools::allDocumentsActivated(aNotActivatedNames)) {
+    if (ModuleBase_Tools::hasModuleDocumentFeature(theFeatures))
+      aNotActivatedDocWrn =
+        QObject::tr("Selected objects can be used in Part documents which are not loaded:%1.\n")
+                            .arg(aNotActivatedNames.c_str());
+  }
+
   std::set<FeaturePtr> aFeaturesRefsTo;
   std::set<FeaturePtr> aFeaturesRefsToParameter;
   std::set<FeaturePtr> aParameterFeatures;
+  QStringList aPartFeatureNames;
   std::set<FeaturePtr>::const_iterator anIt = theFeatures.begin(),
                                        aLast = theFeatures.end();
   // separate features to references to parameter features and references to others
@@ -969,6 +951,9 @@ bool askToDelete(const std::set<FeaturePtr> theFeatures,
     if (theReferences.find(aFeature) == theReferences.end())
       continue;
 
+    if (isFeatureOfResult(aFeature, ModelAPI_ResultPart::group()))
+      aPartFeatureNames.append(aFeature->name().c_str());
+
     std::set<FeaturePtr> aRefFeatures;
     std::set<FeaturePtr> aRefList = theReferences.at(aFeature);
     std::set<FeaturePtr>::const_iterator aRefIt = aRefList.begin(), aRefLast = aRefList.end();
@@ -1001,7 +986,7 @@ bool askToDelete(const std::set<FeaturePtr> theFeatures,
     }
   }
   aParamFeatureNames.sort();
-  QStringList aPartFeatureNames, anOtherFeatureNames;
+  QStringList anOtherFeatureNames;
   anIt = theReferencesToDelete.begin();
   aLast = theReferencesToDelete.end();
   for (; anIt != aLast; anIt++) {
@@ -1023,16 +1008,29 @@ bool askToDelete(const std::set<FeaturePtr> theFeatures,
   aMessageBox.setDefaultButton(QMessageBox::No);
 
   QString aText;
+  if (!thePrefixInfo.empty())
+    aText = thePrefixInfo.c_str();
   QString aSep = ", ";
-  if (!aPartFeatureNames.empty())
-    aText += QString(QObject::tr("The following parts will be deleted: %1.\n")).arg(aPartFeatureNames.join(aSep));
-  if (!anOtherFeatureNames.empty())
-    aText += QString(QObject::tr("Selected features are used in the following features: %1.\nThese features will be deleted.\n"))
+  if (!aPartFeatureNames.empty()) {
+    aText += QString(QObject::tr("The following parts will be deleted: %1.\n"))
+             .arg(aPartFeatureNames.join(aSep));
+  }
+  if (!aNotActivatedDocWrn.isEmpty())
+    aText += aNotActivatedDocWrn;
+  if (!anOtherFeatureNames.empty()) {
+    const char* aMsg = "Features are used in the following features: %1.\nThese "
+                       "features will be deleted.\n";
+    aText += QString(QObject::tr(aMsg))
                      .arg(anOtherFeatureNames.join(aSep));
+  }
   if (!aParamFeatureNames.empty()) {
-    aText += QString(QObject::tr("Selected parameters are used in the following features: %1.\nThese features will be deleted.\nOr parameters could be replaced by their values.\n"))
+    const char* aMsg = "Parameters are used directly and through a sequence "
+                       "of dependencies in the following features: %1.\nThese features will "
+                       "be deleted.\nOr parameters could be replaced by their values.\n";
+    aText += QString(QObject::tr(aMsg))
                      .arg(aParamFeatureNames.join(aSep));
-    QPushButton *aReplaceButton = aMessageBox.addButton(QObject::tr("Replace"), QMessageBox::ActionRole);
+    QPushButton *aReplaceButton =
+      aMessageBox.addButton(QObject::tr("Replace"), QMessageBox::ActionRole);
   }
 
   if (!aText.isEmpty()) {
@@ -1049,7 +1047,8 @@ bool askToDelete(const std::set<FeaturePtr> theFeatures,
         ModelAPI_ReplaceParameterMessage::send(aObj, 0);
     }
     else
-      theReferencesToDelete.insert(aFeaturesRefsToParameterOnly.begin(), aFeaturesRefsToParameterOnly.end());
+      theReferencesToDelete.insert(aFeaturesRefsToParameterOnly.begin(),
+                                   aFeaturesRefsToParameterOnly.end());
   }
   return true;
 }
@@ -1065,8 +1064,234 @@ void convertToFeatures(const QObjectPtrList& theObjects, std::set<FeaturePtr>& t
     if (!aFeature.get() && anObject->groupName() == ModelAPI_ResultParameter::group()) {
       aFeature = ModelAPI_Feature::feature(anObject);
     }
-    theFeatures.insert(aFeature);
+    if (aFeature.get())
+      theFeatures.insert(aFeature);
+  }
+}
+
+//**************************************************************
+void convertToFolders(const QObjectPtrList& theObjects,
+                                         std::set<FolderPtr>& theFolders)
+{
+  QObjectPtrList::const_iterator anIt = theObjects.begin(), aLast = theObjects.end();
+  for(; anIt != aLast; anIt++) {
+    ObjectPtr anObject = *anIt;
+    FolderPtr aFeature = std::dynamic_pointer_cast<ModelAPI_Folder>(anObject);
+    if (aFeature.get())
+      theFolders.insert(aFeature);
+  }
+}
+
+
+//**************************************************************
+QString translate(const Events_InfoMessage& theMessage)
+{
+  QString aMessage;
+
+  if (!theMessage.empty()) {
+    std::string aStr = Config_Translator::translate(theMessage);
+    if (!aStr.empty()) {
+      std::string aCodec = Config_Translator::codec(theMessage);
+      aMessage = QTextCodec::codecForName(aCodec.c_str())->toUnicode(aStr.c_str());
+    }
+  }
+
+  return aMessage;
+}
+
+QString translate(const std::string& theContext, const std::string& theMessage)
+{
+  QString aMessage;
+
+  if (!theMessage.empty()) {
+    std::string aStr = Config_Translator::translate(theContext, theMessage);
+    if (!aStr.empty()) {
+      std::string aCodec = Config_Translator::codec(theContext);
+      aMessage = QTextCodec::codecForName(aCodec.c_str())->toUnicode(aStr.c_str());
+    }
+  }
+
+  return aMessage;
+}
+
+void setPointBallHighlighting(AIS_Shape* theAIS)
+{
+  static Handle(Image_AlienPixMap) aPixMap;
+  if(aPixMap.IsNull()) {
+    // Load icon for the presentation
+    std::string aFile;
+    char* anEnv = getenv("SHAPER_ROOT_DIR");
+    if(anEnv) {
+      aFile = std::string(anEnv) +
+        FSEP + "share" + FSEP + "salome" + FSEP + "resources" + FSEP + "shaper";
+    } else {
+      anEnv = getenv("OPENPARTS_ROOT_DIR");
+      if (anEnv)
+        aFile = std::string(anEnv) + FSEP + "resources";
+    }
+
+    aFile += FSEP;
+    static const std::string aMarkerName = "marker_dot.png";
+    aFile += aMarkerName;
+    aPixMap = new Image_AlienPixMap();
+    if(!aPixMap->Load(aFile.c_str())) {
+      // The icon for constraint is not found
+      static const std::string aMsg =
+        "Error: Point market not found by path: \"" + aFile + "\". Falling back.";
+      //Events_InfoMessage("ModuleBase_Tools::setPointBallHighlighting", aMsg).send();
+    }
+  }
+
+  Handle(Graphic3d_AspectMarker3d) anAspect;
+  Handle(Prs3d_Drawer) aDrawer = theAIS->DynamicHilightAttributes();
+  if (aDrawer.IsNull()) {
+    if (ModuleBase_IViewer::DefaultHighlightDrawer.IsNull())
+      return;
+    aDrawer = new Prs3d_Drawer(*ModuleBase_IViewer::DefaultHighlightDrawer);
+    if (!aDrawer->HasOwnPointAspect()) {
+      aDrawer->SetPointAspect(new Prs3d_PointAspect(Aspect_TOM_BALL, Quantity_NOC_BLACK, 2.0));
+    }
+  }
+  if(aDrawer->HasOwnPointAspect()) {
+    Handle(Prs3d_PointAspect) aPntAspect = aDrawer->PointAspect();
+    if(aPixMap->IsEmpty()) {
+      anAspect = aPntAspect->Aspect();
+      anAspect->SetType(Aspect_TOM_BALL);
+    } else {
+      if(aPixMap->Format() == Image_PixMap::ImgGray) {
+        aPixMap->SetFormat (Image_PixMap::ImgAlpha);
+      } else if(aPixMap->Format() == Image_PixMap::ImgGrayF) {
+        aPixMap->SetFormat (Image_PixMap::ImgAlphaF);
+      }
+      anAspect = new Graphic3d_AspectMarker3d(aPixMap);
+      aPntAspect->SetAspect(anAspect);
+    }
+    aDrawer->SetPointAspect(aPntAspect);
+         theAIS->SetDynamicHilightAttributes(aDrawer);
+  }
+}
+
+FeaturePtr createParameter(const QString& theText)
+{
+  FeaturePtr aParameter;
+  QStringList aList = theText.split("=");
+  if (aList.count() != 2) {
+    return aParameter;
+  }
+  QString aParamName = aList.at(0).trimmed();
+
+  if (isNameExist(aParamName, FeaturePtr())) {
+    return aParameter;
+  }
+
+  if (!ModelAPI_Expression::isVariable(aParamName.toStdString())) {
+    return aParameter;
+  }
+
+  QString aExpression = aList.at(1).trimmed();
+  if (aExpression.isEmpty()) {
+    return aParameter;
+  }
+
+  SessionPtr aMgr = ModelAPI_Session::get();
+  std::shared_ptr<ModelAPI_Document> aDoc = aMgr->activeDocument();
+
+  aParameter = aDoc->addFeature("Parameter");
+  if (aParameter.get()) {
+    AttributeStringPtr aNameAttr = aParameter->string("variable");
+    aNameAttr->setValue(aParamName.toStdString());
+
+    AttributeStringPtr aExprAttr = aParameter->string("expression");
+    aExprAttr->setValue(aExpression.toStdString());
+    aParameter->execute();
+
+    Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_CREATED));
+    Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
+  }
+  return aParameter;
+}
+
+void editParameter(FeaturePtr theParam, const QString& theText)
+{
+  QStringList aList = theText.split("=");
+  QString aParamName = aList.at(0).trimmed();
+
+  QString aExpression = aList.at(1).trimmed();
+  if (aExpression.isEmpty()) {
+    return;
+  }
+
+  if (isNameExist(aParamName, theParam)) {
+    return;
+  }
+  AttributeStringPtr aNameAttr = theParam->string("variable");
+  aNameAttr->setValue(aParamName.toStdString());
+
+  AttributeStringPtr aExprAttr = theParam->string("expression");
+  aExprAttr->setValue(aExpression.toStdString());
+  theParam->execute();
+
+  Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
+}
+
+bool isNameExist(const QString& theName, FeaturePtr theIgnoreParameter)
+{
+  SessionPtr aMgr = ModelAPI_Session::get();
+  std::shared_ptr<ModelAPI_Document> aDoc = aMgr->activeDocument();
+  FeaturePtr aParamFeature;
+  int aNbFeatures = aDoc->numInternalFeatures();
+  std::string aName = theName.toStdString();
+  for (int i = 0; i < aNbFeatures; i++) {
+    aParamFeature = aDoc->internalFeature(i);
+    if (aParamFeature && aParamFeature->getKind() == "Parameter") {
+      if ((theIgnoreParameter != aParamFeature) && (aParamFeature->name() == aName))
+        return true;
+    }
+  }
+  return false;
+}
+
+FeaturePtr findParameter(const QString& theName)
+{
+  SessionPtr aMgr = ModelAPI_Session::get();
+  std::shared_ptr<ModelAPI_Document> aDoc = aMgr->activeDocument();
+  FeaturePtr aParamFeature;
+  int aNbFeatures = aDoc->numInternalFeatures();
+  std::string aName = theName.toStdString();
+  for (int i = 0; i < aNbFeatures; i++) {
+    aParamFeature = aDoc->internalFeature(i);
+    if (aParamFeature && aParamFeature->getKind() == "Parameter") {
+      if (aParamFeature->name() == aName)
+        return aParamFeature;
+    }
+  }
+  return FeaturePtr();
+}
+
+
+//********************************************************************
+std::string generateName(const AttributePtr& theAttribute,
+  ModuleBase_IWorkshop* theWorkshop)
+{
+  std::string aName;
+  if (theAttribute.get() != NULL) {
+    ModuleBase_Operation* anOperation = theWorkshop->currentOperation();
+
+    FeaturePtr aFeature = ModelAPI_Feature::feature(theAttribute->owner());
+    if (aFeature.get()) {
+      std::string aXmlCfg, aDescription;
+      theWorkshop->module()->getXMLRepresentation(aFeature->getKind(), aXmlCfg, aDescription);
+
+      ModuleBase_WidgetFactory aFactory(aXmlCfg, theWorkshop);
+      std::string anAttributeTitle;
+      aFactory.getAttributeTitle(theAttribute->id(), anAttributeTitle);
+
+      std::stringstream aStreamName;
+      aStreamName << theAttribute->owner()->data()->name() << "/" << anAttributeTitle.c_str();
+      aName = aStreamName.str();
+    }
   }
+  return aName;
 }
 
 } // namespace ModuleBase_Tools