//  Copyright (C) 2007-2008  CEA/DEN, EDF R&D, OPEN CASCADE
//
//  Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
//  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
//  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.
//
//  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
//
// SMESH SMESHGUI : GUI for SMESH component
// File   : SMESHGUI_AddMeshElementDlg.cxx
// Author : Nicolas REJNERI, Open CASCADE S.A.S.
//  SMESH includes
//
#include "SMESHGUI_AddMeshElementDlg.h"

#include "SMESHGUI.h"
#include "SMESHGUI_Utils.h"
#include "SMESHGUI_VTKUtils.h"
#include "SMESHGUI_MeshUtils.h"
#include "SMESHGUI_IdValidator.h"

#include <SMESH_Actor.h>
#include <SMESH_ActorUtils.h>
#include <SMESH_FaceOrientationFilter.h>
#include <SMDS_Mesh.hxx>

// SALOME GUI inclues
#include <SUIT_Desktop.h>
#include <SUIT_Session.h>
#include <SUIT_ResourceMgr.h>
#include <SUIT_MessageBox.h>
#include <SUIT_ViewManager.h>
#include <LightApp_SelectionMgr.h>
#include <SALOME_ListIO.hxx>
#include <SalomeApp_Application.h>
#include <SVTK_ViewModel.h>
#include <SVTK_ViewWindow.h>

// IDL incldues
#include CORBA_SERVER_HEADER(SMESH_MeshEditor)

// OCCT includes
#include <TColStd_MapOfInteger.hxx>

// VTK includes
#include <vtkCell.h>
#include <vtkIdList.h>
#include <vtkUnstructuredGrid.h>
#include <vtkDataSetMapper.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>

// Qt includes
#include <QGroupBox>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QRadioButton>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QGridLayout>
#include <QVariant>
#include <QCheckBox>
#include <QKeyEvent>
#include <QButtonGroup>

#define SPACING 6
#define MARGIN  11

namespace SMESH
{
  class TElementSimulation
  {
    SalomeApp_Application* myApplication;
    SUIT_ViewWindow* myViewWindow;
    SVTK_ViewWindow* myVTKViewWindow;

    SALOME_Actor* myPreviewActor;
    vtkDataSetMapper* myMapper;
    vtkUnstructuredGrid* myGrid;

    SALOME_Actor* myFaceOrientation;
    vtkPolyDataMapper* myFaceOrientationDataMapper;
    SMESH_FaceOrientationFilter* myFaceOrientationFilter;

  public:
    TElementSimulation (SalomeApp_Application* theApplication)
    {
      myApplication = theApplication;
      SUIT_ViewManager* mgr = theApplication->activeViewManager();
      if (!mgr) return;
      myViewWindow = mgr->getActiveView();
      myVTKViewWindow = GetVtkViewWindow(myViewWindow);

      myGrid = vtkUnstructuredGrid::New();

      // Create and display actor
      myMapper = vtkDataSetMapper::New();
      myMapper->SetInput(myGrid);

      myPreviewActor = SALOME_Actor::New();
      myPreviewActor->PickableOff();
      myPreviewActor->VisibilityOff();
      myPreviewActor->SetMapper(myMapper);

      vtkFloatingPointType anRGB[3];
      vtkProperty* aProp = vtkProperty::New();
      GetColor( "SMESH", "fill_color", anRGB[0], anRGB[1], anRGB[2], QColor( 0, 170, 255 ) );
      aProp->SetColor( anRGB[0], anRGB[1], anRGB[2] );
      myPreviewActor->SetProperty( aProp );
      aProp->Delete();

      vtkProperty* aBackProp = vtkProperty::New();
      GetColor( "SMESH", "backface_color", anRGB[0], anRGB[1], anRGB[2], QColor( 0, 0, 255 ) );
      aBackProp->SetColor( anRGB[0], anRGB[1], anRGB[2] );
      myPreviewActor->SetBackfaceProperty( aBackProp );
      aBackProp->Delete();

      myVTKViewWindow->AddActor(myPreviewActor);

      // Orientation of faces
      myFaceOrientationFilter = SMESH_FaceOrientationFilter::New();
      myFaceOrientationFilter->SetInput(myGrid);

      myFaceOrientationDataMapper = vtkPolyDataMapper::New();
      myFaceOrientationDataMapper->SetInput(myFaceOrientationFilter->GetOutput());

      myFaceOrientation = SALOME_Actor::New();
      myFaceOrientation->PickableOff();
      myFaceOrientation->VisibilityOff();
      myFaceOrientation->SetMapper(myFaceOrientationDataMapper);

      vtkProperty* anOrientationProp = vtkProperty::New();
      GetColor( "SMESH", "orientation_color", anRGB[0], anRGB[1], anRGB[2], QColor( 255, 255, 255 ) );
      anOrientationProp->SetColor( anRGB[0], anRGB[1], anRGB[2] );
      myFaceOrientation->SetProperty( anOrientationProp );
      anOrientationProp->Delete();

      myVTKViewWindow->AddActor(myFaceOrientation);
    }

    typedef std::vector<vtkIdType> TVTKIds;
    void SetPosition (SMESH_Actor* theActor,
                      vtkIdType theType,
                      const TVTKIds& theIds)
    {
      vtkUnstructuredGrid *aGrid = theActor->GetUnstructuredGrid();
      myGrid->SetPoints(aGrid->GetPoints());

      const int* aConn = NULL;
      switch (theType) {
      case VTK_TETRA:
        {
          static int anIds[] = {0,2,1,3};
          aConn = anIds;
          break;
        }
      case VTK_PYRAMID:
        {
          static int anIds[] = {0,3,2,1,4};
          aConn = anIds;
          break;
        }
      case VTK_HEXAHEDRON:
        {
          static int anIds[] = {0,3,2,1,4,7,6,5};
          aConn = anIds;
          break;
        }
      }

      myGrid->Reset();
      vtkIdList *anIds = vtkIdList::New();

      if(aConn)
	for (int i = 0, iEnd = theIds.size(); i < iEnd; i++)
	  anIds->InsertId(i,theIds[aConn[i]]);
      else
	for (int i = 0, iEnd = theIds.size(); i < iEnd; i++)
	  anIds->InsertId(i,theIds[i]);

      myGrid->InsertNextCell(theType,anIds);
      anIds->Delete();

      myGrid->Modified();

      SetVisibility(true, theActor->GetFacesOriented());
    }


    void SetVisibility (bool theVisibility, bool theShowOrientation = false)
    {
      myPreviewActor->SetVisibility(theVisibility);
      myFaceOrientation->SetVisibility(theShowOrientation);
      RepaintCurrentView();
    }


    ~TElementSimulation()
    {
      if (FindVtkViewWindow(myApplication->activeViewManager(), myViewWindow)) {
	myVTKViewWindow->RemoveActor(myPreviewActor);
	myVTKViewWindow->RemoveActor(myFaceOrientation);
      }
      myPreviewActor->Delete();
      myFaceOrientation->Delete();

      myMapper->RemoveAllInputs();
      myMapper->Delete();

      myFaceOrientationFilter->Delete();

      myFaceOrientationDataMapper->RemoveAllInputs();
      myFaceOrientationDataMapper->Delete();

      myGrid->Delete();
    }
  };
}

//=================================================================================
// function : SMESHGUI_AddMeshElementDlg()
// purpose  : constructor
//=================================================================================
SMESHGUI_AddMeshElementDlg::SMESHGUI_AddMeshElementDlg( SMESHGUI* theModule,
                                                        SMDSAbs_ElementType ElementType, 
							int nbNodes )
  : QDialog( SMESH::GetDesktop( theModule ) ),
    mySMESHGUI( theModule ),
    mySelectionMgr( SMESH::GetSelectionMgr( theModule ) )
{
  setModal( false );
  setAttribute( Qt::WA_DeleteOnClose, true );

  SalomeApp_Application* anApp = dynamic_cast<SalomeApp_Application*>
    (SUIT_Session::session()->activeApplication());
  myIsPoly = false;
  mySimulation = new SMESH::TElementSimulation (anApp);
  mySelector = (SMESH::GetViewWindow( mySMESHGUI ))->GetSelector();

  // verify nb nodes and type
  myNbNodes = nbNodes;
  myElementType = ElementType;
  switch (ElementType) {
  case SMDSAbs_Face:
    //     if (myNbNodes != 3 && myNbNodes != 4)
    //       myNbNodes = 3;
    //     break;
  case SMDSAbs_Volume:
    //     if (myNbNodes != 4 && myNbNodes != 8) //(nbNodes < 4 || nbNodes > 8 || nbNodes == 7)
    //       myNbNodes = 4;
    break;
  default:
    myElementType = SMDSAbs_Edge;
    myNbNodes = 2;
  }

  QString elemName;
  if (myNbNodes == 2) {
    elemName = "EDGE";
    myHelpFileName = "adding_nodes_and_elements_page.html#adding_edges_anchor";
  }
  else if (myNbNodes == 3) {
    elemName = "TRIANGLE";
    myHelpFileName = "adding_nodes_and_elements_page.html#adding_triangles_anchor";
  }
  else if (myNbNodes == 4)
    if (myElementType == SMDSAbs_Face) {
      elemName = "QUADRANGLE";
      myHelpFileName = "adding_nodes_and_elements_page.html#adding_quadrangles_anchor";
    }
    else {
      elemName = "TETRAS";
      myHelpFileName = "adding_nodes_and_elements_page.html#adding_tetrahedrons_anchor";
    }
  else if (myNbNodes == 8) {
    elemName = "HEXAS";
    myHelpFileName = "adding_nodes_and_elements_page.html#adding_hexahedrons_anchor";
  }
  else if (myElementType == SMDSAbs_Face) {
    elemName = "POLYGON";
    myIsPoly = true;
    myHelpFileName = "adding_nodes_and_elements_page.html#adding_polygons_anchor";
  }
  else if (myElementType == SMDSAbs_Volume) {
    myHelpFileName = "adding_nodes_and_elements_page.html#adding_polyhedrons_anchor";
  }
  
  QString iconName      = tr(QString("ICON_DLG_%1").arg(elemName).toLatin1().data());
  QString buttonGrTitle = tr(QString("SMESH_%1").arg(elemName).toLatin1().data());
  QString caption       = tr(QString("SMESH_ADD_%1_TITLE").arg(elemName).toLatin1().data());
  QString grBoxTitle    = tr(QString("SMESH_ADD_%1").arg(elemName).toLatin1().data());

  QPixmap image0 (SMESH::GetResourceMgr( mySMESHGUI )->loadPixmap("SMESH", iconName));
  QPixmap image1 (SMESH::GetResourceMgr( mySMESHGUI )->loadPixmap("SMESH", tr("ICON_SELECT")));

  setWindowTitle(caption);
  setSizeGripEnabled(true);

  QVBoxLayout* aTopLayout = new QVBoxLayout(this);
  aTopLayout->setSpacing(SPACING);
  aTopLayout->setMargin(MARGIN);

  /***************************************************************/
  GroupConstructors = new QGroupBox(buttonGrTitle, this);
  QButtonGroup* ButtonGroup = new QButtonGroup(this);
  QHBoxLayout* GroupConstructorsLayout = new QHBoxLayout(GroupConstructors);
  GroupConstructorsLayout->setSpacing(SPACING);
  GroupConstructorsLayout->setMargin(MARGIN);

  Constructor1 = new QRadioButton(GroupConstructors);
  Constructor1->setIcon(image0);
  Constructor1->setChecked(true);

  GroupConstructorsLayout->addWidget(Constructor1);
  ButtonGroup->addButton( Constructor1, 0 );

  /***************************************************************/
  GroupC1 = new QGroupBox(grBoxTitle, this);
  QGridLayout* GroupC1Layout = new QGridLayout(GroupC1);
  GroupC1Layout->setSpacing(SPACING);
  GroupC1Layout->setMargin(MARGIN);

  TextLabelC1A1 = new QLabel(tr("SMESH_ID_NODES"), GroupC1);
  SelectButtonC1A1 = new QPushButton(GroupC1);
  SelectButtonC1A1->setIcon(image1);
  LineEditC1A1 = new QLineEdit(GroupC1);
  //  LineEditC1A1->setReadOnly(true);
  if (!myIsPoly)
    LineEditC1A1->setValidator(new SMESHGUI_IdValidator(this, myNbNodes));

  Reverse = myElementType == SMDSAbs_Face ? new QCheckBox(tr("SMESH_REVERSE"), GroupC1) : 0;

  GroupC1Layout->addWidget(TextLabelC1A1,    0, 0);
  GroupC1Layout->addWidget(SelectButtonC1A1, 0, 1);
  GroupC1Layout->addWidget(LineEditC1A1,     0, 2);
  if ( Reverse ) GroupC1Layout->addWidget(Reverse, 1, 0, 1, 3);

  /***************************************************************/
  GroupButtons = new QGroupBox(this);
  QHBoxLayout* GroupButtonsLayout = new QHBoxLayout(GroupButtons);
  GroupButtonsLayout->setSpacing(SPACING);
  GroupButtonsLayout->setMargin(MARGIN);

  buttonOk = new QPushButton(tr("SMESH_BUT_APPLY_AND_CLOSE"), GroupButtons);
  buttonOk->setAutoDefault(true);
  buttonOk->setDefault(true);
  buttonApply = new QPushButton(tr("SMESH_BUT_APPLY"), GroupButtons);
  buttonApply->setAutoDefault(true);
  buttonCancel = new QPushButton(tr("SMESH_BUT_CLOSE"), GroupButtons);
  buttonCancel->setAutoDefault(true);
  buttonHelp = new QPushButton(tr("SMESH_BUT_HELP"), GroupButtons);
  buttonHelp->setAutoDefault(true);

  GroupButtonsLayout->addWidget(buttonOk);
  GroupButtonsLayout->addSpacing(10);
  GroupButtonsLayout->addWidget(buttonApply);
  GroupButtonsLayout->addSpacing(10);
  GroupButtonsLayout->addStretch();
  GroupButtonsLayout->addWidget(buttonCancel);
  GroupButtonsLayout->addWidget(buttonHelp);

  /***************************************************************/
  aTopLayout->addWidget(GroupConstructors);
  aTopLayout->addWidget(GroupC1);
  aTopLayout->addWidget(GroupButtons);

  Init(); /* Initialisations */
}

//=================================================================================
// function : ~SMESHGUI_AddMeshElementDlg()
// purpose  : Destroys the object and frees any allocated resources
//=================================================================================
SMESHGUI_AddMeshElementDlg::~SMESHGUI_AddMeshElementDlg()
{
  delete mySimulation;
}

//=================================================================================
// function : Init()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::Init()
{
  GroupC1->show();
  Constructor1->setChecked(true);
  myEditCurrentArgument = LineEditC1A1;
  mySMESHGUI->SetActiveDialogBox((QDialog*)this);

  myNbOkNodes = 0;
  myActor = 0;

  /* signals and slots connections */
  connect(buttonOk, SIGNAL(clicked()),     SLOT(ClickOnOk()));
  connect(buttonCancel, SIGNAL(clicked()), SLOT(ClickOnCancel()));
  connect(buttonApply, SIGNAL(clicked()),  SLOT(ClickOnApply()));
  connect(buttonHelp, SIGNAL(clicked()),   SLOT(ClickOnHelp()));

  connect(SelectButtonC1A1, SIGNAL(clicked()), SLOT(SetEditCurrentArgument()));
  connect(LineEditC1A1, SIGNAL(textChanged(const QString&)), SLOT(onTextChange(const QString&)));
  connect(mySMESHGUI, SIGNAL (SignalDeactivateActiveDialog()), SLOT(DeactivateActiveDialog()));
  connect(mySelectionMgr, SIGNAL(currentSelectionChanged()), SLOT(SelectionIntoArgument()));
  /* to close dialog if study frame change */
  connect(mySMESHGUI, SIGNAL (SignalStudyFrameChanged()), SLOT(ClickOnCancel()));

  if (Reverse)
    connect(Reverse, SIGNAL(stateChanged(int)), SLOT(CheckBox(int)));

  // set selection mode
  SMESH::SetPointRepresentation(true);

  if ( SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI ))
    aViewWindow->SetSelectionMode( NodeSelection );

  myBusy = false;

  SelectionIntoArgument();
}

//=================================================================================
// function : ClickOnApply()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::ClickOnApply()
{
  if (myNbOkNodes && !mySMESHGUI->isActiveStudyLocked()) {
    myBusy = true;
    SMESH::long_array_var anArrayOfIdeces = new SMESH::long_array;
    anArrayOfIdeces->length(myNbNodes);
    bool reverse = (Reverse && Reverse->isChecked());
    QStringList aListId = myEditCurrentArgument->text().split(" ", QString::SkipEmptyParts);
    for (int i = 0; i < aListId.count(); i++)
      if (reverse)
        anArrayOfIdeces[i] = aListId[ myNbNodes - i - 1 ].toInt();
      else
        anArrayOfIdeces[i] = aListId[ i ].toInt();

    SMESH::SMESH_MeshEditor_var aMeshEditor = myMesh->GetMeshEditor();
    switch (myElementType) {
    case SMDSAbs_Edge:
      aMeshEditor->AddEdge(anArrayOfIdeces.inout()); break;
    case SMDSAbs_Face:{
      if(myIsPoly)
	aMeshEditor->AddPolygonalFace(anArrayOfIdeces.inout());
      else
	aMeshEditor->AddFace(anArrayOfIdeces.inout());
      break;

    }
    case SMDSAbs_Volume:
      aMeshEditor->AddVolume(anArrayOfIdeces.inout()); break;
    default:;
    }

    SALOME_ListIO aList; aList.Append( myActor->getIO() );
    mySelector->ClearIndex();
    mySelectionMgr->setSelectedObjects( aList, false );

    SMESH::UpdateView();
    mySimulation->SetVisibility(false);

    buttonOk->setEnabled(false);
    buttonApply->setEnabled(false);

    myEditCurrentArgument->setText("");

    myBusy = false;
  }
}

//=================================================================================
// function : ClickOnOk()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::ClickOnOk()
{
  ClickOnApply();
  ClickOnCancel();
}

//=================================================================================
// function : ClickOnCancel()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::ClickOnCancel()
{
  //mySelectionMgr->clearSelected();
  mySimulation->SetVisibility(false);
  SMESH::SetPointRepresentation(false);
  if ( SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI ))
    aViewWindow->SetSelectionMode( ActorSelection );
  disconnect(mySelectionMgr, 0, this, 0);
  mySMESHGUI->ResetState();
  reject();
}

//=================================================================================
// function : ClickOnHelp()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::ClickOnHelp()
{
  LightApp_Application* app = (LightApp_Application*)(SUIT_Session::session()->activeApplication());
  if (app) 
    app->onHelpContextModule(mySMESHGUI ? app->moduleName(mySMESHGUI->moduleName()) : QString(""), myHelpFileName);
  else {
    QString platform;
#ifdef WIN32
    platform = "winapplication";
#else
    platform = "application";
#endif
    SUIT_MessageBox::warning(this, tr("WRN_WARNING"),
			     tr("EXTERNAL_BROWSER_CANNOT_SHOW_PAGE").
			     arg(app->resourceMgr()->stringValue("ExternalBrowser", 
								 platform)).
			     arg(myHelpFileName));
  }
}

//=================================================================================
// function : onTextChange()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::onTextChange (const QString& theNewText)
{
  if (myBusy) return;
  myBusy = true;

  myNbOkNodes = 0;

  buttonOk->setEnabled(false);
  buttonApply->setEnabled(false);

  mySimulation->SetVisibility(false);

  // hilight entered nodes
  SMDS_Mesh* aMesh = 0;
  if (myActor)
    aMesh = myActor->GetObject()->GetMesh();

  if (aMesh) {
    TColStd_MapOfInteger newIndices;
    
    QStringList aListId = theNewText.split(" ", QString::SkipEmptyParts);
    bool allOk = true;
    for (int i = 0; i < aListId.count(); i++) {
      if( const SMDS_MeshNode * n = aMesh->FindNode( aListId[ i ].toInt() ) )
	{
	  newIndices.Add( n->GetID() );
	  myNbOkNodes++;
	}
      else
	allOk = false;	
    }
    
    mySelector->AddOrRemoveIndex( myActor->getIO(), newIndices, false );
    if ( SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI ))
      aViewWindow->highlight( myActor->getIO(), true, true );
    
    myNbOkNodes = ( allOk && myNbNodes == aListId.count() );
    
    if (myIsPoly)
      {
	if ( !allOk || myElementType != SMDSAbs_Face || aListId.count() < 3 )
	  myNbOkNodes = 0;
	else
	  myNbOkNodes = aListId.count();
      }
  }
  
  if(myNbOkNodes) {
    buttonOk->setEnabled(true);
    buttonApply->setEnabled(true);
    displaySimulation();
  }
  
  myBusy = false;
}

//=================================================================================
// function : SelectionIntoArgument()
// purpose  : Called when selection has changed
//=================================================================================
void SMESHGUI_AddMeshElementDlg::SelectionIntoArgument()
{
  if (myBusy) return;

  // clear
  myNbOkNodes = 0;
  myActor = 0;

  myBusy = true;
  myEditCurrentArgument->setText("");
  myBusy = false;

  if (!GroupButtons->isEnabled()) // inactive
    return;

  buttonOk->setEnabled(false);
  buttonApply->setEnabled(false);

  mySimulation->SetVisibility(false);
  //  SMESH::SetPointRepresentation(true);

  // get selected mesh
  SALOME_ListIO aList;
  mySelectionMgr->selectedObjects(aList,SVTK_Viewer::Type());

  if (aList.Extent() != 1)
    return;

  Handle(SALOME_InteractiveObject) anIO = aList.First();
  myMesh = SMESH::GetMeshByIO(anIO);
  if (myMesh->_is_nil())
    return;

  myActor = SMESH::FindActorByEntry(anIO->getEntry());
  if (!myActor)
    return;

  // get selected nodes
  QString aString = "";
  int nbNodes = SMESH::GetNameOfSelectedNodes(mySelector,myActor->getIO(),aString);
  myBusy = true;
  myEditCurrentArgument->setText(aString);
  myBusy = false;
  if (myIsPoly && myElementType == SMDSAbs_Face && nbNodes >= 3 ) {
    myNbNodes = nbNodes;
  } else if (myNbNodes != nbNodes) {
    return;
  }

  // OK
  myNbOkNodes = nbNodes;

  buttonOk->setEnabled(true);
  buttonApply->setEnabled(true);

  displaySimulation();
}

//=================================================================================
// function : displaySimulation()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::displaySimulation()
{
  if (myNbOkNodes && GroupButtons->isEnabled()) {
    SMESH::TElementSimulation::TVTKIds anIds;
    QStringList aListId = myEditCurrentArgument->text().split(" ", QString::SkipEmptyParts);
    for (int i = 0; i < aListId.count(); i++)
      anIds.push_back(myActor->GetObject()->GetNodeVTKId(aListId[ i ].toInt()));

    if (Reverse && Reverse->isChecked())
      reverse(anIds.begin(),anIds.end());

    vtkIdType aType = 0;
    if (myIsPoly)
      switch ( myElementType ) {
      case SMDSAbs_Face  : aType = VTK_POLYGON; break;
      default: return;
      }
    else {
      switch (myNbNodes) {
      case 2: aType = VTK_LINE; break;
      case 3: aType = VTK_TRIANGLE; break;
      case 4: aType = myElementType == SMDSAbs_Face ? VTK_QUAD : VTK_TETRA; break;
      case 8: aType = VTK_HEXAHEDRON; break;
      default: return;
      }
    }

    mySimulation->SetPosition(myActor,aType,anIds);
    SMESH::UpdateView();
  }
}

//=================================================================================
// function : SetEditCurrentArgument()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::SetEditCurrentArgument()
{
  QPushButton* send = (QPushButton*)sender();
  if (send == SelectButtonC1A1) {
    LineEditC1A1->setFocus();
    myEditCurrentArgument = LineEditC1A1;
  }
  SelectionIntoArgument();
}

//=================================================================================
// function : DeactivateActiveDialog()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::DeactivateActiveDialog()
{
  if (GroupConstructors->isEnabled()) {
    GroupConstructors->setEnabled(false);
    GroupC1->setEnabled(false);
    GroupButtons->setEnabled(false);
    mySimulation->SetVisibility(false);
    mySMESHGUI->ResetState();
    mySMESHGUI->SetActiveDialogBox(0);
  }
}

//=================================================================================
// function : ActivateThisDialog()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::ActivateThisDialog()
{
  /* Emit a signal to deactivate the active dialog */
  mySMESHGUI->EmitSignalDeactivateDialog();

  GroupConstructors->setEnabled(true);
  GroupC1->setEnabled(true);
  GroupButtons->setEnabled(true);

  SMESH::SetPointRepresentation(true);

  if ( SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI ))
    aViewWindow->SetSelectionMode( NodeSelection );
  SelectionIntoArgument();
}

//=================================================================================
// function : enterEvent()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::enterEvent (QEvent*)
{
  if (GroupConstructors->isEnabled())
    return;
  ActivateThisDialog();
}

//=================================================================================
// function : closeEvent()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::closeEvent (QCloseEvent*)
{
  /* same than click on cancel button */
  ClickOnCancel();
}

//=================================================================================
// function : hideEvent()
// purpose  : caused by ESC key
//=================================================================================
void SMESHGUI_AddMeshElementDlg::hideEvent (QHideEvent*)
{
  if (!isMinimized())
    ClickOnCancel();
}

//=================================================================================
// function : CheckBox()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::CheckBox (int state)
{
  if (!myNbOkNodes)
    return;

  if (state >= 0) {
    mySimulation->SetVisibility(false);
    displaySimulation();
  }
}

//=================================================================================
// function : keyPressEvent()
// purpose  :
//=================================================================================
void SMESHGUI_AddMeshElementDlg::keyPressEvent( QKeyEvent* e )
{
  QDialog::keyPressEvent( e );
  if ( e->isAccepted() )
    return;
  
  if ( e->key() == Qt::Key_F1 ) {
    e->accept();
    ClickOnHelp();
  }
}