[occt.git] / src / AIS / AIS_InteractiveContext_1.cxx

// Created on: 1997-01-29
// Created by: Robert COUBLANC
// Copyright (c) 1997-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.


#include <AIS_DataMapIteratorOfDataMapOfIOStatus.hxx>
#include <AIS_GlobalStatus.hxx>
#include <AIS_InteractiveContext.hxx>
#include <AIS_InteractiveObject.hxx>
#include <AIS_LocalContext.hxx>
#include <AIS_MapIteratorOfMapOfInteractive.hxx>
#include <AIS_MapOfInteractive.hxx>
#include <AIS_Selection.hxx>
#include <AIS_Shape.hxx>
#include <AIS_StatusOfDetection.hxx>
#include <AIS_StatusOfPick.hxx>
#include <Aspect_Grid.hxx>
#include <Prs3d_BasicAspect.hxx>
#include <Prs3d_LineAspect.hxx>
#include <Prs3d_Presentation.hxx>
#include <Quantity_Color.hxx>
#include <SelectBasics_SensitiveEntity.hxx>
#include <SelectMgr_EntityOwner.hxx>
#include <SelectMgr_Filter.hxx>
#include <SelectMgr_OrFilter.hxx>
#include <SelectMgr_Selection.hxx>
#include <SelectMgr_SelectionManager.hxx>
#include <Standard_Transient.hxx>
#include <StdSelect_BRepOwner.hxx>
#include <StdSelect_ViewerSelector3d.hxx>
#include <TCollection_AsciiString.hxx>
#include <TCollection_ExtendedString.hxx>
#include <TColStd_ListIteratorOfListOfInteger.hxx>
#include <TopLoc_Location.hxx>
#include <V3d_AmbientLight.hxx>
#include <V3d_DirectionalLight.hxx>
#include <V3d_Light.hxx>
#include <V3d_PositionalLight.hxx>
#include <V3d_SpotLight.hxx>
#include <V3d_View.hxx>
#include <V3d_Viewer.hxx>

typedef NCollection_DataMap<Handle(AIS_InteractiveObject), NCollection_Handle<SelectMgr_SequenceOfOwner> > AIS_MapOfObjSelectedOwners;

namespace
{
  TopoDS_Shape AIS_InteractiveContext_myDummyShape;
}

//=======================================================================
//function : highlightWithColor
//purpose  :
//=======================================================================
void AIS_InteractiveContext::highlightWithColor (const Handle(SelectMgr_EntityOwner)& theOwner,
                                                 const Handle(V3d_Viewer)& theViewer)
{
  const Handle(AIS_InteractiveObject) anObj = Handle(AIS_InteractiveObject)::DownCast (theOwner->Selectable());
  if (anObj.IsNull())
  {
    return;
  }

  const Handle(Prs3d_Drawer)& aStyle = getHiStyle (anObj, theOwner);
  const Standard_Integer aHiMode = getHilightMode (anObj, aStyle, -1);

  myMainPM->BeginImmediateDraw();
  theOwner->HilightWithColor (myMainPM, aStyle, aHiMode);
  myMainPM->EndImmediateDraw (theViewer.IsNull() ? myMainVwr : theViewer);
}

//=======================================================================
//function : highlightSelected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::highlightSelected (const Handle(SelectMgr_EntityOwner)& theOwner)
{
  const Handle(AIS_InteractiveObject) anObj = Handle(AIS_InteractiveObject)::DownCast (theOwner->Selectable());
  if (anObj.IsNull())
  {
    return;
  }

  if (!theOwner->IsAutoHilight())
  {
    SelectMgr_SequenceOfOwner aSeq;
    for (AIS_NListOfEntityOwner::Iterator aSelIter (mySelection->Objects()); aSelIter.More(); aSelIter.Next())
    {
      if (aSelIter.Value()->IsSameSelectable (anObj))
      {
        aSeq.Append (aSelIter.Value());
      }
    }
    anObj->HilightSelected (myMainPM, aSeq);
  }
  else
  {
    const Handle(Prs3d_Drawer)& aStyle = getSelStyle (anObj, theOwner);
    const Standard_Integer aHiMode = getHilightMode (anObj, aStyle, -1);
    theOwner->HilightWithColor (myMainPM, aStyle, aHiMode);
  }
}

//=======================================================================
//function : highlightGlobal
//purpose  :
//=======================================================================
void AIS_InteractiveContext::highlightGlobal (const Handle(AIS_InteractiveObject)& theObj,
                                              const Handle(Prs3d_Drawer)& theStyle,
                                              const Standard_Integer theDispMode) const
{
  if (theObj.IsNull())
  {
    return;
  }

  const Standard_Integer aHiMode = getHilightMode (theObj, theStyle, theDispMode);
  const Handle(SelectMgr_EntityOwner)& aGlobOwner = theObj->GlobalSelOwner();

  if (aGlobOwner.IsNull())
  {
    myMainPM->Color (theObj, theStyle, aHiMode);
    return;
  }

  if (!aGlobOwner->IsAutoHilight())
  {
    SelectMgr_SequenceOfOwner aSeq;
    for (AIS_NListOfEntityOwner::Iterator aSelIter (mySelection->Objects()); aSelIter.More(); aSelIter.Next())
    {
      if (aSelIter.Value()->IsSameSelectable (theObj))
      {
        aSeq.Append (aSelIter.Value());
      }
    }
    theObj->HilightSelected (myMainPM, aSeq);
  }
  else
  {
    aGlobOwner->HilightWithColor (myMainPM, theStyle, aHiMode);
  }
}

//=======================================================================
//function : unhighlightSelected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::unhighlightSelected (const Standard_Boolean theIsToHilightSubIntensity)
{
  NCollection_IndexedMap<Handle(AIS_InteractiveObject)> anObjToClear;
  for (AIS_NListOfEntityOwner::Iterator aSelIter (mySelection->Objects()); aSelIter.More(); aSelIter.Next())
  {
    const Handle(SelectMgr_EntityOwner) anOwner = aSelIter.Value();
    const Handle(AIS_InteractiveObject) anInteractive = Handle(AIS_InteractiveObject)::DownCast (anOwner->Selectable());
    Handle(AIS_GlobalStatus) aStatus;
    if (!myObjects.Find (anInteractive, aStatus))
    {
      continue;
    }

    if (anOwner->IsAutoHilight())
    {
      anOwner->Unhilight (myMainPM);
      if (theIsToHilightSubIntensity)
      {
        if (aStatus->IsSubIntensityOn())
        {
          const Standard_Integer aHiMode = getHilightMode (anInteractive, aStatus->HilightStyle(), aStatus->DisplayMode());
          highlightWithSubintensity (anOwner, aHiMode);
        }
      }
    }
    else
    {
      anObjToClear.Add (anInteractive);
    }
    anOwner->SetSelected (Standard_False);
    if (anOwner == anInteractive->GlobalSelOwner())
    {
      myObjects.ChangeFind (anInteractive)->SetHilightStatus (Standard_False);
    }
  }
  for (NCollection_IndexedMap<Handle(AIS_InteractiveObject)>::Iterator anIter (anObjToClear); anIter.More(); anIter.Next())
  {
    const Handle(AIS_InteractiveObject)& anObj = anIter.Value();
    myMainPM->Unhighlight (anObj);
    anObj->ClearSelected();
  }
}

//=======================================================================
//function : unhighlightGlobal
//purpose  :
//=======================================================================
void AIS_InteractiveContext::unhighlightGlobal (const Handle(AIS_InteractiveObject)& theObj) const
{
  if (theObj.IsNull())
  {
    return;
  }

  const Handle(SelectMgr_EntityOwner)& aGlobOwner = theObj->GlobalSelOwner();
  if (aGlobOwner.IsNull())
  {
    myMainPM->Unhighlight (theObj);
    return;
  }

  if (aGlobOwner->IsAutoHilight())
  {
    aGlobOwner->Unhilight (myMainPM);
  }
  else
  {
    myMainPM->Unhighlight (theObj);
    theObj->ClearSelected();
  }
}

//=======================================================================
//function : turnOnSubintensity
//purpose  :
//=======================================================================
void AIS_InteractiveContext::turnOnSubintensity (const Handle(AIS_InteractiveObject)& theObject,
                                                 const Standard_Integer theDispMode,
                                                 const Standard_Boolean theIsDisplayedOnly) const
{
  // the only differ with selection highlight is color, so sync transparency values
  const Handle(Prs3d_Drawer)& aSubStyle = myStyles[Prs3d_TypeOfHighlight_SubIntensity];
  aSubStyle->SetTransparency (myStyles[Prs3d_TypeOfHighlight_Selected]->Transparency());

  if (theObject.IsNull())
  {
    for (AIS_DataMapIteratorOfDataMapOfIOStatus anObjsIter (myObjects); anObjsIter.More(); anObjsIter.Next())
    {
      const Handle(AIS_GlobalStatus)& aStatus = anObjsIter.Value();
      if (aStatus->GraphicStatus() != AIS_DS_Displayed && theIsDisplayedOnly)
        continue;

      aStatus->SubIntensityOn();
      myMainPM->Color (anObjsIter.Key(), aSubStyle, theDispMode != -1 ? theDispMode : aStatus->DisplayMode());
    }
  }
  else
  {
    Handle(AIS_GlobalStatus) aStatus;
    if (!myObjects.Find (theObject, aStatus))
      return;

    if (aStatus->GraphicStatus() != AIS_DS_Displayed && theIsDisplayedOnly)
      return;

    aStatus->SubIntensityOn();
    myMainPM->Color (theObject, aSubStyle, theDispMode != -1 ? theDispMode : aStatus->DisplayMode());
  }
}

//=======================================================================
//function : highlightWithSubintensity
//purpose  :
//=======================================================================
void AIS_InteractiveContext::highlightWithSubintensity (const Handle(AIS_InteractiveObject)& theObject,
                                                        const Standard_Integer theMode) const
{
  // the only differ with selection highlight is color, so
  // sync transparency values
  myStyles[Prs3d_TypeOfHighlight_SubIntensity]->SetTransparency (myStyles[Prs3d_TypeOfHighlight_Selected]->Transparency());

  myMainPM->Color (theObject, myStyles[Prs3d_TypeOfHighlight_SubIntensity], theMode);
}

//=======================================================================
//function : highlightWithSubintensity
//purpose  :
//=======================================================================
void AIS_InteractiveContext::highlightWithSubintensity (const Handle(SelectMgr_EntityOwner)& theOwner,
                                                        const Standard_Integer theMode) const
{
  // the only differ with selection highlight is color, so
  // sync transparency values
  myStyles[Prs3d_TypeOfHighlight_SubIntensity]->SetTransparency (myStyles[Prs3d_TypeOfHighlight_Selected]->Transparency());

  theOwner->HilightWithColor (myMainPM, myStyles[Prs3d_TypeOfHighlight_SubIntensity], theMode);
}

//=======================================================================
//function : MoveTo
//purpose  :
//=======================================================================
AIS_StatusOfDetection AIS_InteractiveContext::MoveTo (const Standard_Integer  theXPix,
                                                      const Standard_Integer  theYPix,
                                                      const Handle(V3d_View)& theView,
                                                      const Standard_Boolean  theToRedrawOnUpdate)
{
  if (theView->Viewer() != myMainVwr)
  {
    throw Standard_ProgramError ("AIS_InteractiveContext::MoveTo() - invalid argument");
  }

  if (HasOpenedContext())
  {
    myWasLastMain = Standard_True;
    return myLocalContexts (myCurLocalIndex)->MoveTo (theXPix, theYPix, theView, theToRedrawOnUpdate);
  }

  myCurDetected = 0;
  myCurHighlighted = 0;
  myDetectedSeq.Clear();

  // preliminaires
  myLastPicked  = myLastinMain;
  myWasLastMain = Standard_True;
  AIS_StatusOfDetection aStatus        = AIS_SOD_Nothing;
  Standard_Boolean      toUpdateViewer = Standard_False;

  myFilters->SetDisabledObjects (theView->View()->HiddenObjects());
  myMainSel->Pick (theXPix, theYPix, theView);

  // filling of myAISDetectedSeq sequence storing information about detected AIS objects
  // (the objects must be AIS_Shapes)
  const Standard_Integer aDetectedNb = myMainSel->NbPicked();
  Standard_Integer aNewDetected = 0;
  Standard_Boolean toIgnoreDetTop = Standard_False;
  for (Standard_Integer aDetIter = 1; aDetIter <= aDetectedNb; ++aDetIter)
  {
    Handle(SelectMgr_EntityOwner) anOwner = myMainSel->Picked (aDetIter);
    if (anOwner.IsNull()
     || !myFilters->IsOk (anOwner))
    {
      if (myPickingStrategy == SelectMgr_PickingStrategy_OnlyTopmost)
      {
        toIgnoreDetTop = Standard_True;
      }
      continue;
    }

    if (aNewDetected < 1
    && !toIgnoreDetTop)
    {
      aNewDetected = aDetIter;
    }

    myDetectedSeq.Append (aDetIter);
  }

  if (aNewDetected >= 1)
  {
    myCurHighlighted = myDetectedSeq.Lower();

    // Does nothing if previously detected object is equal to the current one.
    // However in advanced selection modes the owners comparison
    // is not effective because in that case only one owner manage the
    // selection in current selection mode. It is necessary to check the current detected
    // entity and hilight it only if the detected entity is not the same as
    // previous detected (IsForcedHilight call)
    Handle(SelectMgr_EntityOwner) aNewPickedOwner = myMainSel->Picked (aNewDetected);
    if (aNewPickedOwner == myLastPicked && !aNewPickedOwner->IsForcedHilight())
    {
      return myLastPicked->IsSelected()
           ? AIS_SOD_Selected
           : AIS_SOD_OnlyOneDetected;
    }
 
    // Previously detected object is unhilighted if it is not selected or hilighted 
    // with selection color if it is selected. Such highlighting with selection color 
    // is needed only if myToHilightSelected flag is true. In this case previously detected
    // object has been already highlighted with myHilightColor during previous MoveTo() 
    // method call. As result it is necessary to rehighligt it with mySelectionColor.
    if (!myLastPicked.IsNull() && myLastPicked->HasSelectable())
    {
      clearDynamicHighlight();
      toUpdateViewer = Standard_True;
    }

    // initialize myLastPicked field with currently detected object
    myLastPicked = aNewPickedOwner;
    myLastinMain = myLastPicked;

    // highlight detected object if it is not selected or myToHilightSelected flag is true
    if (myLastPicked->HasSelectable())
    {
      if (!myLastPicked->IsSelected() || myToHilightSelected)
      {
        highlightWithColor (myLastPicked, theView->Viewer());
        toUpdateViewer = Standard_True;
      }

      aStatus = myLastPicked->IsSelected()
              ? AIS_SOD_Selected
              : AIS_SOD_OnlyOneDetected;
    }
  }
  else
  {
    // previously detected object is unhilighted if it is not selected or hilighted
    // with selection color if it is selected
    aStatus = AIS_SOD_Nothing;
    if (!myLastPicked.IsNull() && myLastPicked->HasSelectable())
    {
      clearDynamicHighlight();
      toUpdateViewer = Standard_True;
    }

    myLastinMain.Nullify();
    myLastPicked.Nullify();
  }

  if (toUpdateViewer
   && theToRedrawOnUpdate)
  {
    theView->Viewer()->Update();
  }

  return aStatus;
}

//=======================================================================
//function : AddSelect
//purpose  : 
//=======================================================================
AIS_StatusOfPick AIS_InteractiveContext::AddSelect (const Handle(SelectMgr_EntityOwner)& theObject)
{
  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->AddSelect (theObject);
  }
  mySelection->AddSelect (theObject);

  Standard_Integer aSelNum = NbSelected();
  return (aSelNum == 0) ? AIS_SOP_NothingSelected
                        : (aSelNum == 1) ? AIS_SOP_OneSelected
                                         : AIS_SOP_SeveralSelected;
}

//=======================================================================
//function : Select
//purpose  : 
//=======================================================================
AIS_StatusOfPick AIS_InteractiveContext::Select (const Standard_Integer  theXPMin,
                                                 const Standard_Integer  theYPMin,
                                                 const Standard_Integer  theXPMax,
                                                 const Standard_Integer  theYPMax,
                                                 const Handle(V3d_View)& theView,
                                                 const Standard_Boolean  toUpdateViewer)
{
  if (theView->Viewer() != myMainVwr)
  {
    throw Standard_ProgramError ("AIS_InteractiveContext::Select() - invalid argument");
  }

  // all objects detected by the selector are taken, previous current objects are emptied,
  // new objects are put...

  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->Select (theXPMin, theYPMin,
                                                     theXPMax, theYPMax,
                                                     theView, toUpdateViewer);
  }

  ClearSelected (Standard_False);

  myWasLastMain = Standard_True;
  myMainSel->Pick (theXPMin, theYPMin, theXPMax, theYPMax, theView);
  for (Standard_Integer aPickIter = 1; aPickIter <= myMainSel->NbPicked(); ++aPickIter)
  {
    const Handle(SelectMgr_EntityOwner)& aCurOwner = myMainSel->Picked (aPickIter);
    if (aCurOwner.IsNull() || !aCurOwner->HasSelectable() || !myFilters->IsOk (aCurOwner))
      continue;

    mySelection->Select (aCurOwner);
    aCurOwner->SetSelected (Standard_True);
  }

  HilightSelected (toUpdateViewer);

  Standard_Integer aSelNum = NbSelected();

  return (aSelNum == 0) ? AIS_SOP_NothingSelected
                        : (aSelNum == 1) ? AIS_SOP_OneSelected
                                         : AIS_SOP_SeveralSelected;
  
}

//=======================================================================
//function : Select
//purpose  : Selection by polyline
//=======================================================================
AIS_StatusOfPick AIS_InteractiveContext::Select (const TColgp_Array1OfPnt2d& thePolyline,
                                                 const Handle(V3d_View)&     theView,
                                                 const Standard_Boolean      toUpdateViewer)
{
  if (theView->Viewer() != myMainVwr)
  {
    throw Standard_ProgramError ("AIS_InteractiveContext::Select() - invalid argument");
  }

  // all objects detected by the selector are taken, previous current objects are emptied,
  // new objects are put...

  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->Select (thePolyline, theView, toUpdateViewer);
  }

  ClearSelected (Standard_False);

  myWasLastMain = Standard_True;
  myMainSel->Pick (thePolyline, theView);
  for (Standard_Integer aPickIter = 1; aPickIter <= myMainSel->NbPicked(); ++aPickIter)
  {
    const Handle(SelectMgr_EntityOwner) anOwner = myMainSel->Picked (aPickIter);
    if (anOwner.IsNull() || !anOwner->HasSelectable() || !myFilters->IsOk (anOwner))
      continue;

    mySelection->Select (anOwner);
    anOwner->SetSelected (Standard_True);
  }

  HilightSelected (toUpdateViewer);

  Standard_Integer aSelNum = NbSelected();

  return (aSelNum == 0) ? AIS_SOP_NothingSelected
                        : (aSelNum == 1) ? AIS_SOP_OneSelected
                                         : AIS_SOP_SeveralSelected;
  
}

//=======================================================================
//function : Select
//purpose  : 
//=======================================================================
AIS_StatusOfPick AIS_InteractiveContext::Select (const Standard_Boolean toUpdateViewer)
{
  if (HasOpenedContext())
  {
    if(myWasLastMain)
    {
      return myLocalContexts(myCurLocalIndex)->Select (toUpdateViewer);
    }
    else
    {
      myLocalContexts(myCurLocalIndex)->SetSelected (Handle(AIS_InteractiveObject)::DownCast (myLastPicked->Selectable()), toUpdateViewer);
      return AIS_SOP_OneSelected;
    }
  }

  clearDynamicHighlight();
  if (myWasLastMain && !myLastinMain.IsNull())
  {
    if (!myLastinMain->IsSelected()
      || myLastinMain->IsForcedHilight()
      || NbSelected() > 1)
    {
      SetSelected (myLastinMain, Standard_False);
      if(toUpdateViewer)
      {
        UpdateCurrentViewer();
      }
    }
  }
  else
  {
    unhighlightSelected (Standard_True);

    mySelection->Clear();
    if (toUpdateViewer && myWasLastMain)
    {
        UpdateCurrentViewer();
    }
  }

  Standard_Integer aSelNum = NbSelected();

  return (aSelNum == 0) ? AIS_SOP_NothingSelected
                        : (aSelNum == 1) ? AIS_SOP_OneSelected
                                         : AIS_SOP_SeveralSelected;
}

//=======================================================================
//function : ShiftSelect
//purpose  : 
//=======================================================================
AIS_StatusOfPick AIS_InteractiveContext::ShiftSelect (const Standard_Boolean toUpdateViewer)
{
  if (HasOpenedContext())
  {
    if(myWasLastMain)
    {
      return myLocalContexts (myCurLocalIndex)->ShiftSelect (toUpdateViewer);
    }
    else
    {
      myLocalContexts (myCurLocalIndex)->AddOrRemoveSelected (myLastPicked, toUpdateViewer);

      Standard_Integer aSelNum = NbSelected();
      return (aSelNum == 0) ? AIS_SOP_NothingSelected
                            : (aSelNum == 1) ? AIS_SOP_OneSelected
                                             : AIS_SOP_SeveralSelected;
    }
  }

  clearDynamicHighlight();
  if (myWasLastMain && !myLastinMain.IsNull())
  {
    AddOrRemoveSelected (myLastinMain, toUpdateViewer);
  }

  Standard_Integer aSelNum = NbSelected();

  return (aSelNum == 0) ? AIS_SOP_NothingSelected
                        : (aSelNum == 1) ? AIS_SOP_OneSelected
                        : AIS_SOP_SeveralSelected;
}

//=======================================================================
//function : ShiftSelect
//purpose  : 
//=======================================================================
AIS_StatusOfPick AIS_InteractiveContext::ShiftSelect (const Standard_Integer theXPMin,
                                                      const Standard_Integer theYPMin,
                                                      const Standard_Integer theXPMax,
                                                      const Standard_Integer theYPMax,
                                                      const Handle(V3d_View)& theView,
                                                      const Standard_Boolean toUpdateViewer)
{
  if (theView->Viewer() != myMainVwr)
  {
    throw Standard_ProgramError ("AIS_InteractiveContext::ShiftSelect() - invalid argument");
  }

  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->ShiftSelect (theXPMin, theYPMin, theXPMax, theYPMax,
                                                          theView, toUpdateViewer);
  }

  UnhilightSelected (Standard_False);

  myWasLastMain = Standard_True;
  myMainSel->Pick (theXPMin, theYPMin, theXPMax, theYPMax, theView);
  for (Standard_Integer aPickIter = 1; aPickIter <= myMainSel->NbPicked(); ++aPickIter)
  {
    const Handle(SelectMgr_EntityOwner) anOwner = myMainSel->Picked (aPickIter);
    if (anOwner.IsNull() || !anOwner->HasSelectable() || !myFilters->IsOk (anOwner))
      continue;

    AIS_SelectStatus aSelStatus = mySelection->Select (anOwner);
    anOwner->SetSelected (aSelStatus == AIS_SS_Added);
  }

  HilightSelected (toUpdateViewer);

  Standard_Integer aSelNum = NbSelected();

  return (aSelNum == 0) ? AIS_SOP_NothingSelected
                        : (aSelNum == 1) ? AIS_SOP_OneSelected
                                         : AIS_SOP_SeveralSelected;

}

//=======================================================================
//function : ShiftSelect
//purpose  : 
//=======================================================================
AIS_StatusOfPick AIS_InteractiveContext::ShiftSelect (const TColgp_Array1OfPnt2d& thePolyline,
                                                      const Handle(V3d_View)& theView,
                                                      const Standard_Boolean toUpdateViewer)
{
  if (theView->Viewer() != myMainVwr)
  {
    throw Standard_ProgramError ("AIS_InteractiveContext::ShiftSelect() - invalid argument");
  }

  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->ShiftSelect (thePolyline, theView, toUpdateViewer);
  }

  UnhilightSelected (Standard_False);

  myWasLastMain = Standard_True;
  myMainSel->Pick (thePolyline, theView);
  for (Standard_Integer aPickIter = 1; aPickIter <= myMainSel->NbPicked(); ++aPickIter)
  {
    const Handle(SelectMgr_EntityOwner) anOwner = myMainSel->Picked (aPickIter);
    if (anOwner.IsNull() || !anOwner->HasSelectable() || !myFilters->IsOk (anOwner))
      continue;

    AIS_SelectStatus aSelStatus = mySelection->Select (anOwner);
    anOwner->SetSelected (aSelStatus == AIS_SS_Added);
  }

  HilightSelected (toUpdateViewer);

  Standard_Integer aSelNum = NbSelected();

  return (aSelNum == 0) ? AIS_SOP_NothingSelected
                        : (aSelNum == 1) ? AIS_SOP_OneSelected
                                         : AIS_SOP_SeveralSelected;
}

//=======================================================================
//function : SetCurrentObject
//purpose  : OBSOLETE, please use SetSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
void AIS_InteractiveContext::SetCurrentObject (const Handle(AIS_InteractiveObject)& theObject,
                                               const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
    return;

  SetSelected (theObject, theToUpdateViewer);
}

//=======================================================================
//function : AddOrRemoveCurrentObject
//purpose  : OBSOLETE, please use AddOrRemoveSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
void AIS_InteractiveContext::AddOrRemoveCurrentObject (const Handle(AIS_InteractiveObject)& theObj,
                                                       const Standard_Boolean theIsToUpdateViewer)
{
  if (HasOpenedContext())
    return;

  AddOrRemoveSelected (theObj, theIsToUpdateViewer);
}
//=======================================================================
//function : UpdateCurrent
//purpose  : OBSOLETE, please use UpdateSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
void AIS_InteractiveContext::UpdateCurrent()
{
  UpdateSelected (Standard_True);
}

//=======================================================================
//function : IsCurrent
//purpose  : OBSOLETE, please use IsSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
Standard_Boolean AIS_InteractiveContext::IsCurrent (const Handle(AIS_InteractiveObject)& theObject) const
{
  return IsSelected (theObject);
}

//=======================================================================
//function : InitCurrent
//purpose  : OBSOLETE, please use InitSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
void AIS_InteractiveContext::InitCurrent()
{
  if (HasOpenedContext())
    return;

  InitSelected();
}

//=======================================================================
//function : MoreCurrent
//purpose  : OBSOLETE, please use MoreSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
Standard_Boolean AIS_InteractiveContext::MoreCurrent() const 
{
  return !HasOpenedContext() && MoreSelected();
}

//=======================================================================
//function : NextCurrent
//purpose  : OBSOLETE, please use NextSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
void AIS_InteractiveContext::NextCurrent()
{
  if (HasOpenedContext())
    return;

  NextSelected();
}

//=======================================================================
//function : Current
//purpose  : OBSOLETE, please use SelectedInteractive() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
Handle(AIS_InteractiveObject) AIS_InteractiveContext::Current() const 
{
  return HasOpenedContext() ? NULL : SelectedInteractive();
}

//=======================================================================
//function : NbCurrents
//purpose  : OBSOLETE, please use NbSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
Standard_Integer AIS_InteractiveContext::NbCurrents()
{
  return HasOpenedContext() ? -1 : NbSelected();
}

//=======================================================================
//function : HilightCurrents
//purpose  : OBSOLETE, please use HilightSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
void AIS_InteractiveContext::HilightCurrents (const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
    return;

  HilightSelected (theToUpdateViewer);
}

//=======================================================================
//function : UnhilightCurrents
//purpose  : OBSOLETE, please use UnhilightSelected() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
void AIS_InteractiveContext::UnhilightCurrents (const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
    return;

  UnhilightSelected (theToUpdateViewer);
}

//=======================================================================
//function : ClearCurrents
//purpose  : OBSOLETE, please use ClearCurrents() instead
//TODO     : Remove in process of local context deletion
//=======================================================================
void AIS_InteractiveContext::ClearCurrents(const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
    return;

  ClearSelected (theToUpdateViewer);
}


//=======================================================================
//function : HilightSelected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::HilightSelected (const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->HilightPicked (theToUpdateViewer);
  }

  // In case of selection without using local context
  clearDynamicHighlight();
  AIS_MapOfObjSelectedOwners anObjOwnerMap;
  for (AIS_NListOfEntityOwner::Iterator aSelIter (mySelection->Objects()); aSelIter.More(); aSelIter.Next())
  {
    const Handle(SelectMgr_EntityOwner) anOwner = aSelIter.Value();
    const Handle(AIS_InteractiveObject) anObj = Handle(AIS_InteractiveObject)::DownCast (anOwner->Selectable());
    const Handle(Prs3d_Drawer)& anObjSelStyle = getSelStyle (anObj, anOwner);
    Handle(AIS_GlobalStatus)& aState = myObjects.ChangeFind(anObj);
    if (anOwner == anObj->GlobalSelOwner())
    {
      aState->SetHilightStatus (Standard_True);
      aState->SetHilightStyle (anObjSelStyle);
    }
    anOwner->SetSelected (Standard_True);
    if (!anOwner->IsAutoHilight())
    {
      NCollection_Handle<SelectMgr_SequenceOfOwner> aSeq;
      if (anObjOwnerMap.Find (anObj, aSeq))
      {
        aSeq->Append (anOwner);
      }
      else
      {
        aSeq = new SelectMgr_SequenceOfOwner();
        aSeq->Append (anOwner);
        anObjOwnerMap.Bind (anObj, aSeq);
      }
    }
    else
    {
      const Standard_Integer aHiMode = getHilightMode (anObj, anObjSelStyle, aState->DisplayMode());
      anOwner->HilightWithColor (myMainPM, anObjSelStyle, aHiMode);
    }
  }

  if (!anObjOwnerMap.IsEmpty())
  {
    for (AIS_MapOfObjSelectedOwners::Iterator anIter (anObjOwnerMap); anIter.More(); anIter.Next())
    {
      anIter.Key()->HilightSelected (myMainPM, *anIter.Value());
    }
    anObjOwnerMap.Clear();
  }

  if (theToUpdateViewer)
    UpdateCurrentViewer();
}

//=======================================================================
//function : UnhilightSelected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::UnhilightSelected (const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->UnhilightPicked (theToUpdateViewer);
  }

  for (AIS_NListOfEntityOwner::Iterator aSelIter (mySelection->Objects()); aSelIter.More(); aSelIter.Next())
  {
    const Handle(SelectMgr_EntityOwner) anOwner = aSelIter.Value();
    const Handle(AIS_InteractiveObject) anObj = Handle(AIS_InteractiveObject)::DownCast (anOwner->Selectable());
    if (anOwner == anObj->GlobalSelOwner())
    {
      myObjects.ChangeFind (anObj)->SetHilightStatus (Standard_False);
    }

    anOwner->SetSelected (Standard_False);
    anOwner->Unhilight (myMainPM);
  }

  if (theToUpdateViewer)
    UpdateCurrentViewer();
}


//=======================================================================
//function : ClearSelected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::ClearSelected (const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
    return myLocalContexts (myCurLocalIndex)->ClearSelected (theToUpdateViewer);

  if (NbSelected() == 0)
    return;

  unhighlightSelected();

  mySelection->Clear();
  clearDynamicHighlight();

  if (theToUpdateViewer)
    UpdateCurrentViewer();
}

//=======================================================================
//function : UpdateSelected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::UpdateSelected (const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->UpdateSelected (theToUpdateViewer);
  }

  HilightSelected (theToUpdateViewer);
}

//=======================================================================
//function : SetSelected
//purpose  : Sets the whole object as selected and highlights it with selection color
//=======================================================================
void AIS_InteractiveContext::SetSelected (const Handle(AIS_InteractiveObject)& theObject,
                                          const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->SetSelected (theObject, theToUpdateViewer);
  }

  if (theObject.IsNull())
  {
    return;
  }

  if (!myObjects.IsBound (theObject))
  {
    Display (theObject, Standard_False);
  }

  Handle(SelectMgr_EntityOwner) anOwner = theObject->GlobalSelOwner();
  if (anOwner.IsNull())
  {
    return;
  }

  const Handle(Prs3d_Drawer)& anObjSelStyle = getSelStyle (theObject, anOwner);
  if (NbSelected() == 1 && myObjects (theObject)->IsHilighted())
  {
    Handle(Prs3d_Drawer) aCustomStyle;
    if (HighlightStyle (theObject, aCustomStyle))
    {
      if (!aCustomStyle.IsNull() && anObjSelStyle != aCustomStyle)
      {
        HilightWithColor (theObject, anObjSelStyle, theToUpdateViewer);
      }
    }
    return;
  }

  for (AIS_NListOfEntityOwner::Iterator aSelIter (mySelection->Objects()); aSelIter.More(); aSelIter.Next())
  {
    const Handle(SelectMgr_EntityOwner)& aSelOwner = aSelIter.Value();
    if (!myFilters->IsOk (aSelOwner))
    {
      continue;
    }

    Handle(AIS_InteractiveObject) aSelectable = Handle(AIS_InteractiveObject)::DownCast (aSelOwner->Selectable());
    Unhilight (aSelectable, Standard_False);
    aSelOwner->SetSelected (Standard_False);
    if (aSelOwner == aSelectable->GlobalSelOwner())
    {
      myObjects.ChangeFind (aSelectable)->SetHilightStatus (Standard_False);
    }
  }

  // added to avoid untimely viewer update...
  mySelection->ClearAndSelect (anOwner);

  Handle(Prs3d_Drawer) aCustomStyle;
  if (HighlightStyle (theObject, aCustomStyle))
  {
    if (!aCustomStyle.IsNull() && anObjSelStyle != aCustomStyle)
    {
      HilightWithColor (theObject, anObjSelStyle, Standard_False);
    }
  }
  else
  {
    HilightWithColor (theObject, anObjSelStyle, Standard_False);
  }
  anOwner->SetSelected (Standard_True);

  if (theToUpdateViewer)
    UpdateCurrentViewer();
}

//=======================================================================
//function : SetSelected
//purpose  : Sets the whole object as selected and highlights it with selection color
//=======================================================================
void AIS_InteractiveContext::SetSelected (const Handle(SelectMgr_EntityOwner)& theOwner,
                                          const Standard_Boolean theToUpdateViewer)
{
  if (theOwner.IsNull() || !theOwner->HasSelectable() || !myFilters->IsOk (theOwner))
    return;

  const Handle(AIS_InteractiveObject) anObject = Handle(AIS_InteractiveObject)::DownCast (theOwner->Selectable());
  const Handle(Prs3d_Drawer)& anObjSelStyle = getSelStyle (anObject, theOwner);
  if (NbSelected() == 1 && theOwner->IsSelected() && !theOwner->IsForcedHilight())
  {
    Handle(Prs3d_Drawer) aCustomStyle;
    if (HighlightStyle (theOwner, aCustomStyle))
    {
      if (!aCustomStyle.IsNull() && anObjSelStyle != aCustomStyle)
      {
        const Standard_Integer aHiMode = anObject->HasHilightMode() ? anObject->HilightMode() : 0;
        theOwner->HilightWithColor (myMainPM, anObjSelStyle, aHiMode);
      }
    }
    return;
  }

  if (!myObjects.IsBound (anObject))
    Display (anObject, Standard_False);

  unhighlightSelected();

  mySelection->ClearAndSelect (theOwner);
  Handle(Prs3d_Drawer) aCustomStyle;
  if (!HighlightStyle (theOwner, aCustomStyle) ||
    (!aCustomStyle.IsNull() && aCustomStyle != anObjSelStyle))
  {
    theOwner->SetSelected (Standard_True);
    highlightSelected (theOwner);
  }

  theOwner->SetSelected (Standard_True);
  if (theOwner == anObject->GlobalSelOwner())
  {
    Handle(AIS_GlobalStatus)& aState = myObjects.ChangeFind (anObject);
    aState->SetHilightStatus (Standard_True);
    aState->SetHilightStyle (anObjSelStyle);
  }

  if (theToUpdateViewer)
    UpdateCurrentViewer();
}

//=======================================================================
//function : AddOrRemoveSelected
//purpose  : Adds or removes current object from AIS selection and highlights/unhighlights it.
//           Since this method makes sence only for neutral point selection of a whole object,
//           if 0 selection of the object is empty this method simply does nothing.
//=======================================================================
void AIS_InteractiveContext::AddOrRemoveSelected (const Handle(AIS_InteractiveObject)& theObject,
                                                  const Standard_Boolean theToUpdateViewer)
{
  if (theObject.IsNull())
  {
    return;
  }

  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->AddOrRemoveSelected (theObject, theToUpdateViewer);
  }

  if (!myObjects.IsBound (theObject))
  {
    return;
  }

  const Handle(SelectMgr_EntityOwner) anOwner = theObject->GlobalSelOwner();
  if (!anOwner.IsNull()
    && anOwner->HasSelectable())
  {
    AddOrRemoveSelected (anOwner, theToUpdateViewer);
  }
}
//=======================================================================
//function : AddOrRemoveSelected
//purpose  : 
//=======================================================================

void AIS_InteractiveContext::AddOrRemoveSelected (const TopoDS_Shape& aShap,
				            const Standard_Boolean updateviewer)
{ 
  if(!HasOpenedContext()) {
#ifdef OCCT_DEBUG
    cout<<" Attempt to remove a selected shape with no opened local context"<<endl;
#endif
    return;
  }
  
  myLocalContexts(myCurLocalIndex)->AddOrRemoveSelected(aShap,updateviewer);
  if(updateviewer) UpdateCurrentViewer();
  
}

//=======================================================================
//function : AddOrRemoveSelected
//purpose  : Allows to highlight or unhighlight the owner given depending on
//           its selection status
//=======================================================================
void AIS_InteractiveContext::AddOrRemoveSelected (const Handle(SelectMgr_EntityOwner)& theOwner,
                                                  const Standard_Boolean theToUpdateViewer)
{
  if (HasOpenedContext())
    return myLocalContexts(myCurLocalIndex)->AddOrRemoveSelected (theOwner, theToUpdateViewer);

  if (theOwner.IsNull() || !theOwner->HasSelectable())
    return;

  if (!myFilters->IsOk(theOwner) && !theOwner->IsSelected())
    return;

  AIS_SelectStatus aSelStat = mySelection->Select (theOwner);
  theOwner->SetSelected (aSelStat == AIS_SS_Added);
  const Handle(AIS_InteractiveObject) anObj = Handle(AIS_InteractiveObject)::DownCast (theOwner->Selectable());
  const Standard_Boolean isGlobal = anObj->GlobalSelOwner() == theOwner;
  Handle(AIS_GlobalStatus)& aStatus = myObjects.ChangeFind (anObj);
  if (theOwner->IsSelected())
  {
    highlightSelected (theOwner);
    if (isGlobal)
    {
      aStatus->SetHilightStatus (Standard_True);
      aStatus->SetHilightStyle (getSelStyle (anObj, theOwner));
    }
  }
  else
  {
    if (theOwner->IsAutoHilight())
    {
      theOwner->Unhilight (myMainPM);
    }
    else
    {
      anObj->ClearSelected();
    }
    aStatus->SetHilightStatus (Standard_False);
    aStatus->SetHilightStyle (Handle(Prs3d_Drawer)());
  }

  if (theToUpdateViewer)
    UpdateCurrentViewer();
}


//=======================================================================
//function : IsSelected
//purpose  :
//=======================================================================
Standard_Boolean AIS_InteractiveContext::IsSelected (const Handle(AIS_InteractiveObject)& theObj) const
{
  if(HasOpenedContext())
    return myLocalContexts(myCurLocalIndex)->IsSelected (theObj);

  if (theObj.IsNull() || !myObjects.IsBound (theObj))
    return Standard_False;

  const Standard_Integer aGlobalSelMode = theObj->GlobalSelectionMode();
  const TColStd_ListOfInteger& anActivatedModes = myObjects (theObj)->SelectionModes();
  for (TColStd_ListIteratorOfListOfInteger aModeIter (anActivatedModes); aModeIter.More(); aModeIter.Next())
  {
    if (aModeIter.Value() == aGlobalSelMode)
    {
      if (Handle(SelectMgr_EntityOwner) aGlobOwner = theObj->GlobalSelOwner())
      {
        return aGlobOwner->IsSelected();
      }
      return Standard_False;
    }
  }
  return Standard_False;
}

//=======================================================================
//function : IsSelected
//purpose  : Returns true is the owner given is selected
//=======================================================================
Standard_Boolean AIS_InteractiveContext::IsSelected (const Handle(SelectMgr_EntityOwner)& theOwner) const
{
  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->IsSelected (theOwner);
  }
  return !theOwner.IsNull()
       && theOwner->IsSelected();
}

//=======================================================================
//function : InitSelected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::InitSelected()
{
  if (HasOpenedContext())
  {
    myLocalContexts (myCurLocalIndex)->InitSelected();
    return;
  }

  mySelection->Init();
}

//=======================================================================
//function : MoreSelected
//purpose  :
//=======================================================================
Standard_Boolean AIS_InteractiveContext::MoreSelected() const
{
  if (HasOpenedContext())
    return myLocalContexts (myCurLocalIndex)->MoreSelected();

  return mySelection->More();
}

//=======================================================================
//function : NextSelected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::NextSelected()
{
  if(HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->NextSelected();
  }

  mySelection->Next();
}

//=======================================================================
//function : HasSelectedShape
//purpose  :
//=======================================================================
Standard_Boolean AIS_InteractiveContext::HasSelectedShape() const
{
  if(HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->HasSelectedShape();
  }
  if (!mySelection->More())
    return Standard_False;

  const Handle(StdSelect_BRepOwner) anOwner =
    Handle(StdSelect_BRepOwner)::DownCast (mySelection->Value());

  return !anOwner.IsNull() && anOwner->HasShape();
}

//=======================================================================
//function : SelectedShape
//purpose  :
//=======================================================================
TopoDS_Shape AIS_InteractiveContext::SelectedShape() const
{
  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->SelectedShape();
  }

  if (!mySelection->More())
    return TopoDS_Shape();

  const Handle(StdSelect_BRepOwner) anOwner =
    Handle(StdSelect_BRepOwner)::DownCast (mySelection->Value());
  if (anOwner.IsNull() || !anOwner->HasSelectable())
    return TopoDS_Shape();

  return anOwner->Shape().Located (anOwner->Location() * anOwner->Shape().Location());
}

//=======================================================================
//function : SelectedInteractive
//purpose  :
//=======================================================================
Handle(AIS_InteractiveObject) AIS_InteractiveContext::SelectedInteractive() const 
{
  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->SelectedInteractive();
  }

  return !mySelection->More()
       ? Handle(AIS_InteractiveObject)()
       : Handle(AIS_InteractiveObject)::DownCast (mySelection->Value()->Selectable());
}
//=======================================================================
//function : SelectedOwner
//purpose  :
//=======================================================================
Handle(SelectMgr_EntityOwner) AIS_InteractiveContext::SelectedOwner() const
{
  if(HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->SelectedOwner();
  }

  return !mySelection->More()
       ? Handle(SelectMgr_EntityOwner)()
       : mySelection->Value();
}

//=======================================================================
//function : EntityOwners
//purpose  : 
//=======================================================================
void AIS_InteractiveContext::EntityOwners(Handle(SelectMgr_IndexedMapOfOwner)& theOwners,
					  const Handle(AIS_InteractiveObject)& theIObj,
					  const Standard_Integer theMode) const 
{
  if (theIObj.IsNull())
  {
    return;
  }

  TColStd_ListOfInteger aModes;
  if (theMode == -1)
  {
    ActivatedModes (theIObj, aModes);
  }
  else
  {
    aModes.Append (theMode);
  }

  if (theOwners.IsNull())
  {
    theOwners = new SelectMgr_IndexedMapOfOwner();
  }

  for (TColStd_ListIteratorOfListOfInteger anItr (aModes); anItr.More(); anItr.Next())
  {
    const int aMode = anItr.Value();
    const Handle(SelectMgr_Selection)& aSel = theIObj->Selection (aMode);
    if (aSel.IsNull())
    {
      continue;
    }

    for (NCollection_Vector<Handle(SelectMgr_SensitiveEntity)>::Iterator aSelEntIter (aSel->Entities()); aSelEntIter.More(); aSelEntIter.Next())
    {
      if (Handle(SelectBasics_SensitiveEntity) aEntity = aSelEntIter.Value()->BaseSensitive())
      {
        if (Handle(SelectMgr_EntityOwner) aOwner = Handle(SelectMgr_EntityOwner)::DownCast(aEntity->OwnerId()))
        {
          theOwners->Add (aOwner);
        }
      }
    }
  }
}

//=======================================================================
//function : NbSelected
//purpose  :
//=======================================================================
Standard_Integer AIS_InteractiveContext::NbSelected()
{
  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->Selection()->Extent();
  }
  return mySelection->Extent();
}

//=======================================================================
//function : HasApplicative
//purpose  :
//=======================================================================
  Standard_Boolean AIS_InteractiveContext::HasApplicative() const 
{
  return SelectedInteractive()->HasOwner();
}

//=======================================================================
//function : Applicative
//purpose  :
//=======================================================================
Handle(Standard_Transient) AIS_InteractiveContext::Applicative() const 
{
  return SelectedInteractive()->GetOwner();
}

//==================================================
// Function: HasDetected
// Purpose :
//==================================================
Standard_Boolean AIS_InteractiveContext::HasDetected() const
{
  if(HasOpenedContext())
    return myLocalContexts(myCurLocalIndex)->HasDetected();

  return !myLastPicked.IsNull();
}

//=======================================================================
//function : HasDetectedShape
//purpose  : 
//=======================================================================

Standard_Boolean AIS_InteractiveContext::HasDetectedShape() const 
{
  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->HasDetectedShape();
  }

  Handle(StdSelect_BRepOwner) anOwner = Handle(StdSelect_BRepOwner)::DownCast (myLastPicked);
  return !anOwner.IsNull()
       && anOwner->HasShape();
}

//=======================================================================
//function : DetectedShape
//purpose  : 
//=======================================================================
const TopoDS_Shape& AIS_InteractiveContext::DetectedShape() const
{
  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->DetectedShape();
  }

  Handle(StdSelect_BRepOwner) anOwner = Handle(StdSelect_BRepOwner)::DownCast (myLastPicked);
  return anOwner->Shape();
}

//=======================================================================
//function : DetectedInteractive
//purpose  :
//=======================================================================
Handle(AIS_InteractiveObject) AIS_InteractiveContext::DetectedInteractive() const
{
  if (HasOpenedContext())
    return myLocalContexts(myCurLocalIndex)->DetectedInteractive();

  return Handle(AIS_InteractiveObject)::DownCast (myLastPicked->Selectable());
}

//=======================================================================
//function : HasNextDetected
//purpose  :
//=======================================================================
Standard_Boolean AIS_InteractiveContext::HasNextDetected() const 
{
  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->HasNextDetected();
  }

  return !myDetectedSeq.IsEmpty() && myCurHighlighted <= myDetectedSeq.Upper();
}


//=======================================================================
//function : DetectedOwner
//purpose  : 
//=======================================================================
Handle(SelectMgr_EntityOwner) AIS_InteractiveContext::DetectedOwner() const
{
  if (HasOpenedContext())
    return myLocalContexts(myCurLocalIndex)->DetectedOwner();

  return myLastPicked;
}

//=======================================================================
//function : HilightNextDetected
//purpose  :
//=======================================================================
Standard_Integer AIS_InteractiveContext::HilightNextDetected (const Handle(V3d_View)& theView,
                                                              const Standard_Boolean  theToRedrawImmediate)
{
  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->HilightNextDetected (theView, theToRedrawImmediate);
  }

  myMainPM->ClearImmediateDraw();
  if (myDetectedSeq.IsEmpty())
  {
    return 0;
  }

  if (++myCurHighlighted > myDetectedSeq.Upper())
  {
    myCurHighlighted = myDetectedSeq.Lower();
  }
  const Handle(SelectMgr_EntityOwner)& anOwner = myMainSel->Picked (myDetectedSeq (myCurHighlighted));
  if (anOwner.IsNull())
  {
    return 0;
  }

  highlightWithColor (anOwner, theView->Viewer());
  myLastPicked = anOwner;
  myLastinMain = myLastPicked;

  if (theToRedrawImmediate)
  {
    myMainPM->RedrawImmediate (theView->Viewer());
    myMainVwr->RedrawImmediate();
  }

  return myCurHighlighted;
}

//=======================================================================
//function : HilightPreviousDetected
//purpose  :
//=======================================================================
Standard_Integer AIS_InteractiveContext::HilightPreviousDetected (const Handle(V3d_View)& theView,
                                                                  const Standard_Boolean  theToRedrawImmediate)
{
  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->HilightPreviousDetected (theView, theToRedrawImmediate);
  }

  myMainPM->ClearImmediateDraw();
  if (myDetectedSeq.IsEmpty())
  {
    return 0;
  }

  if (--myCurHighlighted < myDetectedSeq.Lower())
  {
    myCurHighlighted = myDetectedSeq.Upper();
  }
  const Handle(SelectMgr_EntityOwner)& anOwner = myMainSel->Picked (myDetectedSeq (myCurHighlighted));
  if (anOwner.IsNull())
  {
    return 0;
  }

  highlightWithColor (anOwner, theView->Viewer());
  myLastPicked = anOwner;
  myLastinMain = myLastPicked;

  if (theToRedrawImmediate)
  {
    myMainPM->RedrawImmediate (theView->Viewer());
    myMainVwr->RedrawImmediate();
  }

  return myCurHighlighted;
}

//=======================================================================
//function : InitDetected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::InitDetected()
{
  if (HasOpenedContext())
  {
    myLocalContexts (myCurLocalIndex)->InitDetected();
    return;
  }

  if (!myDetectedSeq.IsEmpty())
  {
    myCurDetected = myDetectedSeq.Lower();
  }
}

//=======================================================================
//function : MoreDetected
//purpose  :
//=======================================================================
Standard_Boolean AIS_InteractiveContext::MoreDetected() const
{
  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->MoreDetected();
  }

  return myCurDetected >= myDetectedSeq.Lower() && myCurDetected <= myDetectedSeq.Upper();
}

//=======================================================================
//function : NextDetected
//purpose  :
//=======================================================================
void AIS_InteractiveContext::NextDetected()
{
  if (HasOpenedContext())
  {
    myLocalContexts (myCurLocalIndex)->NextDetected();
    return;
  }

  myCurDetected++;
}

//=======================================================================
//function : DetectedCurrentOwner
//purpose  :
//=======================================================================
Handle(SelectMgr_EntityOwner) AIS_InteractiveContext::DetectedCurrentOwner() const
{
  if (HasOpenedContext())
  {
    return myLocalContexts (myCurLocalIndex)->DetectedCurrentOwner();
  }

  return MoreDetected()
       ? myMainSel->Picked (myDetectedSeq (myCurDetected))
       : Handle(SelectMgr_EntityOwner)();
}

//=======================================================================
//function : DetectedCurrentShape
//purpose  :
//=======================================================================
const TopoDS_Shape& AIS_InteractiveContext::DetectedCurrentShape() const
{
  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->DetectedCurrentShape();
  }

  Standard_DISABLE_DEPRECATION_WARNINGS
  Handle(AIS_Shape) aCurrentShape = Handle(AIS_Shape)::DownCast (DetectedCurrentObject());
  Standard_ENABLE_DEPRECATION_WARNINGS
  return !aCurrentShape.IsNull()
        ? aCurrentShape->Shape()
        : AIS_InteractiveContext_myDummyShape;
}

//=======================================================================
//function : DetectedCurrentObject
//purpose  :
//=======================================================================
Handle(AIS_InteractiveObject) AIS_InteractiveContext::DetectedCurrentObject() const
{
  if (HasOpenedContext())
  {
    return myLocalContexts(myCurLocalIndex)->DetectedCurrentObject();
  }

  return MoreDetected()
       ? Handle(AIS_InteractiveObject)::DownCast (myMainSel->Picked (myDetectedSeq (myCurDetected))->Selectable())
       : Handle(AIS_InteractiveObject)();
}

//=======================================================================
//function : FirstSelectedObject
//purpose  :
//=======================================================================
Handle(AIS_InteractiveObject) AIS_InteractiveContext::FirstSelectedObject()
{
  Handle(AIS_InteractiveObject) anObject;

  if (HasOpenedContext())
    return anObject;

  InitSelected();
  if (MoreSelected())
  {
    return SelectedInteractive();
  }
  return anObject;
}

//=======================================================================
//function : RedrawImmediate
//purpose  : Redisplays immediate strucures of the viewer given according to their visibility
//=======================================================================
void AIS_InteractiveContext::RedrawImmediate (const Handle(V3d_Viewer)& theViewer)
{
  myMainPM->RedrawImmediate (theViewer);
}