// Copyright (C) 2007-2015  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, 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
//

// SMESH SMESHGUI : GUI for SMESH component
// File   : SMESHGUI_ExtrusionAlongPathDlg.cxx
// Author : Vadim SANDLER, Open CASCADE S.A.S.
// SMESH includes

#include "SMESHGUI_ExtrusionAlongPathDlg.h"

#include "SMESHGUI.h"
#include "SMESHGUI_ExtrusionDlg.h" // for SMESHGUI_3TypesSelector
#include "SMESHGUI_FilterDlg.h"
#include "SMESHGUI_IdValidator.h"
#include "SMESHGUI_MeshEditPreview.h"
#include "SMESHGUI_MeshUtils.h"
#include "SMESHGUI_SpinBox.h"
#include "SMESHGUI_Utils.h"
#include "SMESHGUI_VTKUtils.h"

#include <SMESH_Actor.h>
#include <SMESH_TypeFilter.hxx>
#include <SMESH_NumberFilter.hxx>
#include <SMESH_LogicalFilter.hxx>

#include <SMDS_Mesh.hxx>

// SALOME GEOM includes
#include <GEOMBase.h>

// SALOME GUI includes
#include <SUIT_ResourceMgr.h>
#include <SUIT_OverrideCursor.h>
#include <SUIT_Desktop.h>
#include <SUIT_MessageBox.h>
#include <SUIT_Session.h>
#include <LightApp_Application.h>
#include <LightApp_SelectionMgr.h>
#include <SVTK_ViewWindow.h>

// OCCT includes
#include <BRep_Tool.hxx>
#include <TopoDS_Vertex.hxx>
#include <gp_Pnt.hxx>
#include <TColStd_MapOfInteger.hxx>

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

// IDL includes
#include <SALOMEconfig.h>
#include CORBA_SERVER_HEADER(SMESH_Group)
#include CORBA_SERVER_HEADER(SMESH_MeshEditor)

#define SPACING 6
#define MARGIN  11

class SMESHGUI_ExtrusionAlongPathDlg::SetBusy
{
public:
  SetBusy( SMESHGUI_ExtrusionAlongPathDlg* _dlg )
  {
    myDlg = _dlg; 
    myDlg->myBusy = true;
  }
  
  ~SetBusy()
  { 
    myDlg->myBusy = false;
  }
  
private:
  SMESHGUI_ExtrusionAlongPathDlg* myDlg;
};

//=================================================================================
// function : SMESHGUI_ExtrusionAlongPathDlg()
// purpose  : constructor
//=================================================================================
SMESHGUI_ExtrusionAlongPathDlg::SMESHGUI_ExtrusionAlongPathDlg( SMESHGUI* theModule )
  : SMESHGUI_PreviewDlg( theModule ),
    mySelectionMgr( SMESH::GetSelectionMgr( theModule ) )
{
  SUIT_ResourceMgr* mgr = SMESH::GetResourceMgr( mySMESHGUI );
  QPixmap selectImage ( mgr->loadPixmap("SMESH", tr("ICON_SELECT")));
  QPixmap addImage    ( mgr->loadPixmap("SMESH", tr("ICON_APPEND")));
  QPixmap removeImage ( mgr->loadPixmap("SMESH", tr("ICON_REMOVE")));

  setModal( false );
  setAttribute( Qt::WA_DeleteOnClose, true );
  setWindowTitle(tr("EXTRUSION_ALONG_PATH"));
  setSizeGripEnabled(true);

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

  /***************************************************************/
  // Arguments group box
  GroupArguments = new QGroupBox(tr("SMESH_EXTRUSION"), this);
  QGridLayout* GroupArgumentsLayout = new QGridLayout(GroupArguments);
  GroupArgumentsLayout->setSpacing(SPACING); GroupArgumentsLayout->setMargin(MARGIN);

  myIdValidator = new SMESHGUI_IdValidator(this);

  // Controls for elements selection
  SelectorWdg = new SMESHGUI_3TypesSelector( GroupArguments );
  
  // Controls for path selection
  PathGrp = new QGroupBox(tr("SMESH_PATH"), GroupArguments);
  QGridLayout* PathGrpLayout = new QGridLayout(PathGrp);
  PathGrpLayout->setSpacing(SPACING); PathGrpLayout->setMargin(MARGIN);

  // Controls for path mesh selection
  QLabel* PathMeshLab = new QLabel(tr("SMESH_PATH_MESH"), PathGrp);

  SelectPathMeshButton = new QPushButton(PathGrp);
  SelectPathMeshButton->setIcon(selectImage);
  SelectPathMeshButton->setCheckable(true);

  PathMeshLineEdit = new QLineEdit(PathGrp);
  PathMeshLineEdit->setReadOnly(true);

  // Controls for path starting point selection
  QLabel* StartPointLab = new QLabel(tr("SMESH_PATH_START"), PathGrp);

  SelectStartPointButton = new QPushButton(PathGrp);
  SelectStartPointButton->setIcon(selectImage);
  SelectStartPointButton->setCheckable(true);

  StartPointLineEdit = new QLineEdit(PathGrp);
  StartPointLineEdit->setValidator(new QIntValidator(this));

  // layouting
  PathGrpLayout->addWidget(PathMeshLab,            0, 0);
  PathGrpLayout->addWidget(SelectPathMeshButton,   0, 1);
  PathGrpLayout->addWidget(PathMeshLineEdit,       0, 2);
  PathGrpLayout->addWidget(StartPointLab,          1, 0);
  PathGrpLayout->addWidget(SelectStartPointButton, 1, 1);
  PathGrpLayout->addWidget(StartPointLineEdit,     1, 2);

  BasePointGrp = new QGroupBox(tr("SMESH_BASE_POINT"), GroupArguments);
  BasePointGrp->setCheckable(true);
  BasePointGrp->setChecked(false);
  QHBoxLayout* BasePointGrpLayout = new QHBoxLayout(BasePointGrp);
  BasePointGrpLayout->setSpacing(SPACING); BasePointGrpLayout->setMargin(MARGIN);

  SelectBasePointButton = new QPushButton(BasePointGrp);
  SelectBasePointButton->setIcon(selectImage);
  SelectBasePointButton->setCheckable(true);

  SelectorWdg->GetButtonGroup()->addButton( SelectPathMeshButton );
  SelectorWdg->GetButtonGroup()->addButton( SelectStartPointButton );
  SelectorWdg->GetButtonGroup()->addButton( SelectBasePointButton );

  QLabel* XLab  = new QLabel(tr("SMESH_X"), BasePointGrp);
  XSpin = new SMESHGUI_SpinBox(BasePointGrp);
  QLabel* YLab  = new QLabel(tr("SMESH_Y"), BasePointGrp);
  YSpin = new SMESHGUI_SpinBox(BasePointGrp);
  QLabel* ZLab  = new QLabel(tr("SMESH_Z"), BasePointGrp);
  ZSpin = new SMESHGUI_SpinBox(BasePointGrp);

  // layouting
  BasePointGrpLayout->addWidget(SelectBasePointButton);
  BasePointGrpLayout->addWidget(XLab);
  BasePointGrpLayout->addWidget(XSpin);
  BasePointGrpLayout->addWidget(YLab);
  BasePointGrpLayout->addWidget(YSpin);
  BasePointGrpLayout->addWidget(ZLab);
  BasePointGrpLayout->addWidget(ZSpin);

  AnglesGrp = new QGroupBox(tr("SMESH_ANGLES"), GroupArguments);
  AnglesGrp->setCheckable(true);
  AnglesGrp->setChecked(false);
  QGridLayout* AnglesGrpLayout = new QGridLayout(AnglesGrp);
  AnglesGrpLayout->setSpacing(SPACING); AnglesGrpLayout->setMargin(MARGIN);

  AnglesList = new QListWidget(AnglesGrp);
  AnglesList->setSelectionMode(QListWidget::ExtendedSelection);

  AddAngleButton = new QToolButton(AnglesGrp);
  AddAngleButton->setIcon(addImage);

  RemoveAngleButton = new QToolButton(AnglesGrp);
  RemoveAngleButton->setIcon(removeImage);

  AngleSpin = new SMESHGUI_SpinBox(AnglesGrp);

  LinearAnglesCheck = new QCheckBox(tr("LINEAR_ANGLES"), AnglesGrp);

  // layouting
  AnglesGrpLayout->addWidget(AnglesList,        0, 0, 4, 1);
  AnglesGrpLayout->addWidget(AddAngleButton,    0, 1);
  AnglesGrpLayout->addWidget(RemoveAngleButton, 2, 1);
  AnglesGrpLayout->addWidget(AngleSpin,         0, 2);
  AnglesGrpLayout->addWidget(LinearAnglesCheck, 4, 0);
  AnglesGrpLayout->setRowMinimumHeight(1, 10);
  AnglesGrpLayout->setRowStretch(3, 10);

  // CheckBox for groups generation
  MakeGroupsCheck = new QCheckBox(tr("SMESH_MAKE_GROUPS"), GroupArguments);
  MakeGroupsCheck->setChecked(true);

  //Preview check box
  myPreviewCheckBox = new QCheckBox(tr("PREVIEW"), GroupArguments);

  // layouting
  GroupArgumentsLayout->addWidget(SelectorWdg,          0, 0);
  GroupArgumentsLayout->addWidget(PathGrp,              1, 0);
  GroupArgumentsLayout->addWidget(BasePointGrp,         2, 0);
  GroupArgumentsLayout->addWidget(AnglesGrp,            3, 0);
  GroupArgumentsLayout->addWidget(myPreviewCheckBox,    4, 0);
  GroupArgumentsLayout->addWidget(MakeGroupsCheck,      5, 0);

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

  OkButton = new QPushButton(tr("SMESH_BUT_APPLY_AND_CLOSE"), GroupButtons);
  OkButton->setAutoDefault(true);
  OkButton->setDefault(true);

  ApplyButton = new QPushButton(tr("SMESH_BUT_APPLY"), GroupButtons);
  ApplyButton->setAutoDefault(true);

  CloseButton = new QPushButton(tr("SMESH_BUT_CLOSE"), GroupButtons);
  CloseButton->setAutoDefault(true);

  HelpButton = new QPushButton(tr("SMESH_BUT_HELP"), GroupButtons);
  HelpButton->setAutoDefault(true);

  // layouting
  GroupButtonsLayout->addWidget(OkButton);
  GroupButtonsLayout->addSpacing(10);
  GroupButtonsLayout->addWidget(ApplyButton);
  GroupButtonsLayout->addSpacing(10);
  GroupButtonsLayout->addStretch();
  GroupButtonsLayout->addWidget(CloseButton);
  GroupButtonsLayout->addWidget(HelpButton);

  /***************************************************************/
  // layouting
  topLayout->addWidget(GroupArguments);
  topLayout->addWidget(GroupButtons);

  /***************************************************************/
  // Initialisations
  XSpin->RangeStepAndValidator(COORD_MIN, COORD_MAX, 10.0, "length_precision");
  YSpin->RangeStepAndValidator(COORD_MIN, COORD_MAX, 10.0, "length_precision");
  ZSpin->RangeStepAndValidator(COORD_MIN, COORD_MAX, 10.0, "length_precision");
  AngleSpin->RangeStepAndValidator(-180.0, 180.0, 5.0, "angle_precision");

  mySelector = (SMESH::GetViewWindow( mySMESHGUI ))->GetSelector();

  mySMESHGUI->SetActiveDialogBox(this);

  myPathMeshFilter = new SMESH_TypeFilter(SMESH::MESHorSUBMESH);

  myHelpFileName = "extrusion_along_path_page.html";

  Init();

  /***************************************************************/
  // signals-slots connections
  connect(OkButton,     SIGNAL(clicked()), this, SLOT(ClickOnOk()));
  connect(CloseButton,  SIGNAL(clicked()), this, SLOT(reject()));
  connect(ApplyButton,  SIGNAL(clicked()), this, SLOT(ClickOnApply()));
  connect(HelpButton,   SIGNAL(clicked()), this, SLOT(ClickOnHelp()));

  connect(AddAngleButton,    SIGNAL(clicked()), this, SLOT(OnAngleAdded()));
  connect(RemoveAngleButton, SIGNAL(clicked()), this, SLOT(OnAngleRemoved()));

  connect(SelectPathMeshButton,   SIGNAL(clicked()), this, SLOT(SetEditCurrentArgument()));
  connect(SelectStartPointButton, SIGNAL(clicked()), this, SLOT(SetEditCurrentArgument()));
  connect(SelectBasePointButton,  SIGNAL(clicked()), this, SLOT(SetEditCurrentArgument()));
  connect(BasePointGrp,       SIGNAL(toggled(bool)), this, SLOT(SetEditCurrentArgument()));

  connect(mySMESHGUI,  SIGNAL(SignalCloseAllDialogs()),        SLOT(reject()));
  connect(mySMESHGUI,  SIGNAL(SignalActivatedViewManager()),   SLOT(onOpenView()));
  connect(mySMESHGUI,  SIGNAL(SignalCloseView()),              SLOT(onCloseView()));
  connect(mySMESHGUI,  SIGNAL(SignalDeactivateActiveDialog()), SLOT(DeactivateActiveDialog()));
  connect(mySelectionMgr, SIGNAL(currentSelectionChanged()),   SLOT(SelectionIntoArgument()));
  connect(SelectorWdg,    SIGNAL(selectionChanged()), this,    SLOT(toDisplaySimulation()));
  connect(SelectorWdg,    SIGNAL(selectionChanged()), this,    SLOT(CheckIsEnable()));

  connect(StartPointLineEdit, SIGNAL(textChanged(const QString&)),
          SLOT(onTextChange(const QString&)));

  connect(XSpin,  SIGNAL(valueChanged(double)), this, SLOT(toDisplaySimulation()));
  connect(YSpin,  SIGNAL(valueChanged(double)), this, SLOT(toDisplaySimulation()));
  connect(ZSpin,  SIGNAL(valueChanged(double)), this, SLOT(toDisplaySimulation()));
  connect(AddAngleButton,    SIGNAL(clicked()), this, SLOT(toDisplaySimulation()));
  connect(RemoveAngleButton, SIGNAL(clicked()), this, SLOT(toDisplaySimulation()));
  //connect(LinearAnglesCheck, SIGNAL(toggled(bool)), SLOT(onSelectMesh()));


  //To Connect preview check box
  connectPreviewControl();

  AnglesList        ->installEventFilter(this);
  StartPointLineEdit->installEventFilter(this);
  XSpin->editor()   ->installEventFilter(this);
  YSpin->editor()   ->installEventFilter(this);
  ZSpin->editor()   ->installEventFilter(this);

  CheckIsEnable();
}

//=================================================================================
// function : ~SMESHGUI_ExtrusionAlongPathDlg()
// purpose  : destructor
//=================================================================================
SMESHGUI_ExtrusionAlongPathDlg::~SMESHGUI_ExtrusionAlongPathDlg()
{
  // no need to delete child widgets, Qt does it all for us
}

//=================================================================================
// function : Init()
// purpose  : initialization
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::Init (bool ResetControls)
{
  myBusy = false;
  myEditCurrentArgument = 0;

  myPath = SMESH::SMESH_IDSource::_nil();

  SelectorWdg->Clear();
  PathMeshLineEdit->clear();
  StartPointLineEdit->clear();

  if (ResetControls) {
    XSpin->SetValue(0.0);
    YSpin->SetValue(0.0);
    ZSpin->SetValue(0.0);

    AngleSpin->SetValue(45);
    myPreviewCheckBox->setChecked(false);
    onDisplaySimulation(false);
  }
  SetEditCurrentArgument(0);
}

//=================================================================================
// function : CheckIsEnable()
// purpose  : Check whether the Ok and Apply buttons should be enabled or not
//=================================================================================

void SMESHGUI_ExtrusionAlongPathDlg::CheckIsEnable()
{  
  bool anIsEnable = SelectorWdg->IsAnythingSelected() && isValuesValid();

  OkButton->setEnabled(anIsEnable);
  ApplyButton->setEnabled(anIsEnable);
}

//=================================================================================
// function : ClickOnApply()
// purpose  : Called when user presses <Apply> button
//=================================================================================
bool SMESHGUI_ExtrusionAlongPathDlg::ClickOnApply()
{
  if (mySMESHGUI->isActiveStudyLocked())
    return false;

  if ( !SelectorWdg->IsAnythingSelected() || myPath->_is_nil() )
    return false;

  if (!isValid())
    return false;

  if (StartPointLineEdit->text().trimmed().isEmpty()) {
    return false;
  }
  
  bool bOk;
  long aNodeStart = StartPointLineEdit->text().toLong(&bOk);
  if (!bOk) {
    return false;
  }

  QStringList aParameters;
  
  //get angles
  SMESH::double_array_var anAngles = getAngles();
  
  for (int i = 0; i < myAnglesList.count(); i++)
    aParameters << AnglesList->item(i)->text();


  // get base point
  SMESH::PointStruct aBasePoint;
  if (BasePointGrp->isChecked()) {
    aBasePoint.x = XSpin->GetValue();
    aBasePoint.y = YSpin->GetValue();
    aBasePoint.z = ZSpin->GetValue();
  }
  aParameters << XSpin->text();
  aParameters << YSpin->text();
  aParameters << ZSpin->text();

  bool meshHadNewTypeBefore = true;
  int  maxSelType = 0;
  const bool makeGroups = ( MakeGroupsCheck->isEnabled() && MakeGroupsCheck->isChecked() );

  try {
    SUIT_OverrideCursor wc;

    SMESH::SMESH_Mesh_var mesh = SelectorWdg->GetMesh();

    mesh->SetParameters( aParameters.join(":").toLatin1().constData() );

      SMESH::ListOfIDSources_var nodes = new SMESH::ListOfIDSources();
      SMESH::ListOfIDSources_var edges = new SMESH::ListOfIDSources();
      SMESH::ListOfIDSources_var faces = new SMESH::ListOfIDSources();
      maxSelType = SelectorWdg->GetSelected( nodes, edges, faces );

      // is it necessary to switch on the next Display Mode?
      SMESH::ElementType newType = (SMESH::ElementType)( maxSelType + 1 );
      SMESH::array_of_ElementType_var oldTypes = mesh->GetTypes();
      meshHadNewTypeBefore = false;
      for ( size_t i = 0; i < oldTypes->length() && !meshHadNewTypeBefore; ++i )
        meshHadNewTypeBefore = ( oldTypes[i] >= newType );

      SMESH::SMESH_MeshEditor_var aMeshEditor = mesh->GetMeshEditor();
      SMESH::SMESH_MeshEditor::Extrusion_Error retVal;

      SMESH::ListOfGroups_var groups =
        aMeshEditor->ExtrusionAlongPathObjects( nodes, edges, faces, myPath,
                                                GEOM::GEOM_Object::_nil(),
                                                aNodeStart, AnglesGrp->isChecked(),
                                                anAngles, LinearAnglesCheck->isChecked(),
                                                BasePointGrp->isChecked(), aBasePoint,
                                                makeGroups, retVal );

      wc.suspend();
      switch (retVal) {
      case SMESH::SMESH_MeshEditor::EXTR_NO_ELEMENTS:
        SUIT_MessageBox::warning(this,
                                 tr("SMESH_ERROR"),
                                 tr("NO_ELEMENTS_SELECTED"));
        return false; break;
      case SMESH::SMESH_MeshEditor::EXTR_PATH_NOT_EDGE:
        SUIT_MessageBox::warning(this,
                                 tr("SMESH_ERROR"),
                                 tr("SELECTED_PATH_IS_NOT_EDGE"));
        return false; break;
      case SMESH::SMESH_MeshEditor::EXTR_BAD_PATH_SHAPE:
        SUIT_MessageBox::warning(this,
                                 tr("SMESH_ERROR"),
                                 tr("BAD_SHAPE_TYPE"));
        return false; break;
      case SMESH::SMESH_MeshEditor::EXTR_BAD_STARTING_NODE:
        SUIT_MessageBox::warning(this,
                                 tr("SMESH_ERROR"),
                                 tr("EXTR_BAD_STARTING_NODE"));
        return false; break;
      case SMESH::SMESH_MeshEditor::EXTR_BAD_ANGLES_NUMBER:
        SUIT_MessageBox::warning(this,
                                 tr("SMESH_ERROR"),
                                 tr("WRONG_ANGLES_NUMBER"));
        return false; break;
      case SMESH::SMESH_MeshEditor::EXTR_CANT_GET_TANGENT:
        SUIT_MessageBox::warning(this,
                                 tr("SMESH_ERROR"),
                                 tr("CANT_GET_TANGENT"));
        return false; break;
      case SMESH::SMESH_MeshEditor::EXTR_OK:
        break;
      }
  } catch (...) {
    return false;
  }

  SMESH_Actor* actor = SelectorWdg->GetActor();
  if ( actor && !meshHadNewTypeBefore )
  {
    unsigned int aMode = actor->GetEntityMode();
    switch ( maxSelType ) {
    case SMESH::NODE: // extrude node -> edges
      actor->SetRepresentation(SMESH_Actor::eEdge);
      actor->SetEntityMode( aMode |= SMESH_Actor::eEdges ); break;
    case SMESH::EDGE: // edge -> faces
      actor->SetRepresentation(SMESH_Actor::eSurface);
      actor->SetEntityMode( aMode |= SMESH_Actor::eFaces ); break;
    case SMESH::FACE: // faces -> volumes
      actor->SetRepresentation(SMESH_Actor::eSurface);
      actor->SetEntityMode( aMode |= SMESH_Actor::eVolumes ); break;
    }
  }
  if ( actor )
    SMESH::Update( actor->getIO(), actor->GetVisibility() );
  if ( makeGroups )
    mySMESHGUI->updateObjBrowser(true); // new groups may appear
  Init(false);
  mySelectionMgr->clearSelected();
  SelectorWdg->Clear();

  SMESHGUI::Modified();
  return true;
}

//=================================================================================
// function : ClickOnOk()
// purpose  : Called when user presses <OK> button
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::ClickOnOk()
{
  if (ClickOnApply())
    reject();
}

//=================================================================================
// function : ClickOnHelp()
// purpose  :
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::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 : reject()
// purpose  : Called when dialog box is closed
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::reject()
{
  disconnect(mySelectionMgr, 0, this, 0);
  mySelectionMgr->clearFilters();
  //mySelectionMgr->clearSelected();
  if (SMESH::GetCurrentVtkView()) {
    SMESH::RemoveFilters(); // PAL6938 -- clean all mesh entity filters
    SMESH::SetPointRepresentation(false);
    SMESH::SetPickable();
  }
  if ( SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI ))
    aViewWindow->SetSelectionMode(ActorSelection);
  mySMESHGUI->ResetState();

  QDialog::reject();
}

//=================================================================================
// function : onOpenView()
// purpose  :
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::onOpenView()
{
  if ( mySelector ) {
    SMESH::SetPointRepresentation(false);
  }
  else {
    mySelector = SMESH::GetViewWindow( mySMESHGUI )->GetSelector();
    ActivateThisDialog();
  }
}

//=================================================================================
// function : onCloseView()
// purpose  :
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::onCloseView()
{
  DeactivateActiveDialog();
  mySelector = 0;
}

//=======================================================================
// function : onTextChange()
// purpose  :
//=======================================================================
void SMESHGUI_ExtrusionAlongPathDlg::onTextChange (const QString& theNewText)
{
  QLineEdit* send = (QLineEdit*)sender();

  // return if busy
  if (myBusy) return;

  // set busy flag
  SetBusy sb (this);

  if (send == StartPointLineEdit &&
      myEditCurrentArgument == StartPointLineEdit)
  {
    if (!myPath->_is_nil()) {
      SMESH_Actor* aPathActor = SMESH::FindActorByObject(myPath);
      SMDS_Mesh* aMesh = aPathActor ? aPathActor->GetObject()->GetMesh() : 0;
      if (aMesh) {
        SALOME_ListIO aList;
        aList.Append(aPathActor->getIO());
        mySelectionMgr->setSelectedObjects(aList, false);

        bool bOk;
        long ind = theNewText.toLong(&bOk);
        if (bOk) {
          const SMDS_MeshNode* n = aMesh->FindNode(ind);
          if (n) {
            TColStd_MapOfInteger newIndices;
            newIndices.Add(n->GetID());
            mySelector->AddOrRemoveIndex( aPathActor->getIO(), newIndices, false );
            if ( SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI ))
              aViewWindow->highlight( aPathActor->getIO(), true, true );
          }
        }
      }
    }
  }
  CheckIsEnable();
  onDisplaySimulation(true);
}

//=================================================================================
// function : SelectionIntoArgument()
// purpose  : Called when selection as changed or other case
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::SelectionIntoArgument()
{
  if (myBusy) return;

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

  // selected objects count
  const SALOME_ListIO& aList = mySelector->StoredIObjects();
  int nbSel = aList.Extent();
  if (nbSel != 1)
    return;

  // set busy flag
  SetBusy sb (this);

  const bool isPathDef = ( SelectPathMeshButton->isChecked() ||
                           SelectStartPointButton->isChecked() );

  if (myEditCurrentArgument == PathMeshLineEdit && isPathDef)
  {
    // we are now selecting path mesh
    // reset
    PathMeshLineEdit->clear();
    myPath = SMESH::SMESH_IDSource::_nil();
    StartPointLineEdit->clear();

    // try to get mesh from selection
    Handle(SALOME_InteractiveObject) IO = aList.First();
    myPath = SMESH::IObjectToInterface<SMESH::SMESH_IDSource>(IO);
    if( myPath->_is_nil() )
      return;

    QString aString;
    SMESH::GetNameOfSelectedIObjects(mySelectionMgr, aString);
    PathMeshLineEdit->setText(aString);
  }
  else if (myEditCurrentArgument == StartPointLineEdit && isPathDef )
  {
    // we are now selecting start point of path
    // reset
    StartPointLineEdit->clear();

    // return if path mesh or path shape is not yet selected
    if( myPath->_is_nil() )
      return;

    // try to get shape from selection
    Handle(SALOME_InteractiveObject) IO = aList.First();

    SMESH_Actor* aPathActor = SMESH::FindActorByObject(myPath);
    if ( !aPathActor )
      return;

    QString aString;
    int aNbUnits = SMESH::GetNameOfSelectedElements(mySelector, aPathActor->getIO(), aString);
    if (aNbUnits == 1)
      StartPointLineEdit->setText(aString.trimmed());
  }
  else if ( myEditCurrentArgument == XSpin &&
            SelectBasePointButton->isChecked() )
  {
    // we are now selecting base point
    // reset is not performed here!

    // return if is not enabled
    if (!BasePointGrp->isChecked())
      return;

    // try to get shape from selection
    Handle(SALOME_InteractiveObject) IO = aList.First();

    // check if geom vertex is selected
    GEOM::GEOM_Object_var aGeomObj = SMESH::IObjectToInterface<GEOM::GEOM_Object>(IO);
    TopoDS_Vertex aVertex;
    if (!aGeomObj->_is_nil()) {
      if (aGeomObj->IsShape() && GEOMBase::GetShape(aGeomObj, aVertex) && !aVertex.IsNull()) {
        gp_Pnt aPnt = BRep_Tool::Pnt(aVertex);
        XSpin->SetValue(aPnt.X());
        YSpin->SetValue(aPnt.Y());
        ZSpin->SetValue(aPnt.Z());
      }
      return;
    }

    // check if smesh node is selected
    SMESH::SMESH_Mesh_var aMesh = SMESH::GetMeshByIO(IO);
    if (aMesh->_is_nil())
      return;

    QString aString;
    int aNbUnits = SMESH::GetNameOfSelectedNodes(mySelector, IO, aString);
    // return if more than one node is selected
    if (aNbUnits != 1)
      return;

    SMESH_Actor* aMeshActor = SMESH::FindActorByObject(aMesh);
    if (!aMeshActor)
      return;

    SMDS_Mesh* mesh = aMeshActor->GetObject()->GetMesh();
    if (!mesh)
      return;

    const SMDS_MeshNode* n = mesh->FindNode(aString.toLong());
    if (!n)
      return;

    XSpin->SetValue(n->X());
    YSpin->SetValue(n->Y());
    ZSpin->SetValue(n->Z());
  }
  else
  {
    return;
  }

  onDisplaySimulation(true);
  CheckIsEnable();
}

//=================================================================================
// function : SetEditCurrentArgument()
// purpose  :
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::SetEditCurrentArgument()
{
  QPushButton* send = (QPushButton*)sender();
  if ( sender() == BasePointGrp )
    send = SelectBasePointButton;
  if (send != SelectPathMeshButton   &&
      send != SelectStartPointButton &&
      send != SelectBasePointButton)
    return;
  SetEditCurrentArgument(send);
}

//=================================================================================
// function : SetEditCurrentArgument()
// purpose  :
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::SetEditCurrentArgument (QPushButton* button)
{
  disconnect(mySelectionMgr, 0, this, 0);
  //  mySelectionMgr->clearSelected();
  mySelectionMgr->clearFilters();
  SMESH::SetPickable();

  myEditCurrentArgument = 0;
  if (button == SelectPathMeshButton)
  {
    myEditCurrentArgument = PathMeshLineEdit;
    SMESH::SetPointRepresentation(false);
    if ( SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI ))
      aViewWindow->SetSelectionMode(ActorSelection);
    mySelectionMgr->installFilter(myPathMeshFilter);
  }
  else if (button == SelectStartPointButton)
  {
    myEditCurrentArgument = StartPointLineEdit;
    if (!myPath->_is_nil()) {
      SMESH_Actor* aPathActor = SMESH::FindActorByObject(myPath);
      if (aPathActor) {
        SMESH::SetPointRepresentation(true);
        if ( SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI ))
          aViewWindow->SetSelectionMode(NodeSelection);
        SMESH::SetPickable(aPathActor);
      }
    }
  }
  else if (button == SelectBasePointButton)
  {
    myEditCurrentArgument = XSpin;
    SMESH::SetPointRepresentation(true);
    if ( SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI ))
      aViewWindow->SetSelectionMode(NodeSelection);

    SMESH_TypeFilter* aMeshOrSubMeshFilter = new SMESH_TypeFilter(SMESH::IDSOURCE);
    SMESH_NumberFilter* aVertexFilter      = new SMESH_NumberFilter ("GEOM", TopAbs_SHAPE,
                                                                     -1, TopAbs_VERTEX);
    QList<SUIT_SelectionFilter*> aListOfFilters;
    if (aMeshOrSubMeshFilter) aListOfFilters.append(aMeshOrSubMeshFilter);
    if (aVertexFilter)        aListOfFilters.append(aVertexFilter);

    mySelectionMgr->installFilter(new SMESH_LogicalFilter
                                  (aListOfFilters, SMESH_LogicalFilter::LO_OR, true));
  }

  if (myEditCurrentArgument && !myEditCurrentArgument->hasFocus())
    myEditCurrentArgument->setFocus();

  connect(mySelectionMgr, SIGNAL(currentSelectionChanged()), this, SLOT(SelectionIntoArgument()));
  SelectionIntoArgument();
}

//=================================================================================
// function : DeactivateActiveDialog()
// purpose  : Deactivates this dialog
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::DeactivateActiveDialog()
{
  if (GroupButtons->isEnabled())
  {
    GroupArguments->setEnabled(false);
    GroupButtons->setEnabled(false);
    SelectorWdg->setEnabled(false);
    mySMESHGUI->ResetState();
    mySMESHGUI->SetActiveDialogBox(0);
  }
}

//=================================================================================
// function : ActivateThisDialog()
// purpose  : Activates this dialog
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::ActivateThisDialog()
{
  // Emit a signal to deactivate the active dialog
  mySMESHGUI->EmitSignalDeactivateDialog();
  GroupArguments->setEnabled(true);
  GroupButtons->setEnabled(true);
  SelectorWdg->setEnabled(true);

  mySMESHGUI->SetActiveDialogBox(this);
  SelectionIntoArgument();
}

//=================================================================================
// function : enterEvent()
// purpose  :
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::enterEvent (QEvent*)
{
  if ( !GroupButtons->isEnabled() ) {
    SVTK_ViewWindow* aViewWindow = SMESH::GetViewWindow( mySMESHGUI );
    if ( aViewWindow && !mySelector) {
      mySelector = aViewWindow->GetSelector();
    }
    ActivateThisDialog();
  }
}

//=======================================================================
// function : OnAngleAdded()
// purpose  : Called when user adds angle to the list
//=======================================================================
void SMESHGUI_ExtrusionAlongPathDlg::OnAngleAdded()
{
  QString msg;
  if( !AngleSpin->isValid( msg, true ) ) {
    QString str( tr( "SMESH_INCORRECT_INPUT" ) );
    if ( !msg.isEmpty() )
      str += "\n" + msg;
    SUIT_MessageBox::critical( this, tr( "SMESH_ERROR" ), str );
    return;
  }
  AnglesList->addItem(AngleSpin->text());
  myAnglesList.append(AngleSpin->GetValue());

  updateLinearAngles();
}

//=======================================================================
// function : OnAngleRemoved()
// purpose  : Called when user removes angle(s) from the list
//=======================================================================
void SMESHGUI_ExtrusionAlongPathDlg::OnAngleRemoved()
{
  QList<QListWidgetItem*> aList = AnglesList->selectedItems();
  QListWidgetItem* anItem;
  foreach(anItem, aList) {
    myAnglesList.removeAt(AnglesList->row(anItem));
    delete anItem;
  }

  updateLinearAngles();
}

//=================================================================================
// function : eventFilter()
// purpose  : event filter ???
//=================================================================================
bool SMESHGUI_ExtrusionAlongPathDlg::eventFilter (QObject* object, QEvent* event)
{
  if (event->type() == QEvent::KeyPress) {
    QKeyEvent* ke = (QKeyEvent*)event;
    if (object == AnglesList) {
      if (ke->key() == Qt::Key_Delete)
        OnAngleRemoved();
    }
  }
  else if (event->type() == QEvent::FocusIn) {
    if (object == StartPointLineEdit) {
      if (myEditCurrentArgument != StartPointLineEdit)
        SetEditCurrentArgument(SelectStartPointButton);
    }
    else if (object == XSpin->editor() || object == YSpin->editor() || object == ZSpin->editor()) {
      if (myEditCurrentArgument != XSpin)
        SetEditCurrentArgument(SelectBasePointButton);
    }
  }
  return QDialog::eventFilter(object, event);
}

//=================================================================================
// function : keyPressEvent()
// purpose  :
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::keyPressEvent( QKeyEvent* e )
{
  QDialog::keyPressEvent( e );
  if ( e->isAccepted() )
    return;

  if ( e->key() == Qt::Key_F1 ) {
    e->accept();
    ClickOnHelp();
  }
}

//=================================================================================
// function : isValid
// purpose  :
//=================================================================================
bool SMESHGUI_ExtrusionAlongPathDlg::isValid()
{
  QString msg;
  bool ok = true;
  ok = XSpin->isValid( msg, true ) && ok;
  ok = YSpin->isValid( msg, true ) && ok;
  ok = ZSpin->isValid( msg, true ) && ok;

  if( !ok ) {
    QString str( tr( "SMESH_INCORRECT_INPUT" ) );
    if ( !msg.isEmpty() )
      str += "\n" + msg;
    SUIT_MessageBox::critical( this, tr( "SMESH_ERROR" ), str );
    return false;
  }
  return true;
}

//=================================================================================
// function : updateLinearAngles
// purpose  :
//=================================================================================
void SMESHGUI_ExtrusionAlongPathDlg::updateLinearAngles()
{
  bool enableLinear = true;
  for( int row = 0, nbRows = AnglesList->count(); row < nbRows; row++ ) {
    if( QListWidgetItem* anItem = AnglesList->item( row ) ) {
      enableLinear = false;
      anItem->text().toDouble(&enableLinear);
      if( !enableLinear )
        break;
    }
  }
  if( !enableLinear )
    LinearAnglesCheck->setChecked( false );
  LinearAnglesCheck->setEnabled( enableLinear );
}

//=================================================================================
// function : isValuesValid()
// purpose  : Return true in case if values entered into dialog are valid
//=================================================================================

bool SMESHGUI_ExtrusionAlongPathDlg::isValuesValid()
{ 
  if ( myPath->_is_nil() )
    return false;
  
  bool bOk;
  long aNodeStart = StartPointLineEdit->text().toLong(&bOk);
  if ( !bOk || aNodeStart < 1 )
    return false;

  SMESH::SMESH_Mesh_var mesh = myPath->GetMesh();
  if ( mesh->_is_nil() )
    return false;

  SMESH::ElementType type = mesh->GetElementType( aNodeStart, false );
  if ( type != SMESH::NODE )
    return false;

  SMESH::long_array_var elems = mesh->GetNodeInverseElements( aNodeStart );
  if ( elems->length() != 1 ||
       mesh->GetElementType( elems[0], true ) != SMESH::EDGE )
    return false;

  return true;
}

//=================================================================================
// function : onDisplaySimulation
// purpose  : Show/Hide preview
//=================================================================================

void SMESHGUI_ExtrusionAlongPathDlg::onDisplaySimulation( bool toDisplayPreview )
{
  if ( myPreviewCheckBox->isChecked() && toDisplayPreview ) {
    if ( SelectorWdg->IsAnythingSelected() && isValid() && isValuesValid())
    {
      // get angles
      SMESH::double_array_var anAngles = getAngles();
      
      // get base point
      SMESH::PointStruct aBasePoint;
      if (BasePointGrp->isChecked()) {
        aBasePoint.x = XSpin->GetValue();
        aBasePoint.y = YSpin->GetValue();
        aBasePoint.z = ZSpin->GetValue();
      }
      bool bOk;
      long aNodeStart = StartPointLineEdit->text().toLong(&bOk);
      if (bOk) {

        try {
          SUIT_OverrideCursor wc;

          SMESH::SMESH_MeshEditor::Extrusion_Error retVal;
          SMESH::SMESH_Mesh_var             mesh = SelectorWdg->GetMesh();
          SMESH::SMESH_MeshEditor_var meshEditor = mesh->GetMeshEditPreviewer();

          SMESH::ListOfIDSources_var nodes = new SMESH::ListOfIDSources();
          SMESH::ListOfIDSources_var edges = new SMESH::ListOfIDSources();
          SMESH::ListOfIDSources_var faces = new SMESH::ListOfIDSources();
          SelectorWdg->GetSelected( nodes, edges, faces );
          const bool makeGroups = false;

          SMESH::ListOfGroups_var groups =
            meshEditor->ExtrusionAlongPathObjects( nodes, edges, faces, myPath,
                                                   GEOM::GEOM_Object::_nil(),
                                                   aNodeStart, AnglesGrp->isChecked(),
                                                   anAngles, LinearAnglesCheck->isChecked(),
                                                   BasePointGrp->isChecked(), aBasePoint,
                                                   makeGroups, retVal );

          if( retVal == SMESH::SMESH_MeshEditor::EXTR_OK )
          {
            SMESH::MeshPreviewStruct_var aMeshPreviewStruct = meshEditor->GetPreviewData();
            mySimulation->SetData( aMeshPreviewStruct._retn() );
          }
          else {
            hidePreview();
          }

        } catch (...) {
          hidePreview();
        }
      } else {
        hidePreview();
      }

    } else {
      hidePreview();
    }
  } else {
    hidePreview();
  }
}

SMESH::double_array_var SMESHGUI_ExtrusionAlongPathDlg::getAngles()
{
  SMESH::double_array_var anAngles = new SMESH::double_array;
  if (AnglesGrp->isChecked())
  {
    anAngles->length(myAnglesList.count());
    int j = 0;
    for (int i = 0; i < myAnglesList.count(); i++) {
      double angle = myAnglesList[i];
      anAngles[ j++ ] = angle*M_PI/180.;
    }
    anAngles->length(j);
  }
  return anAngles;
}