// GEOM GEOMGUI : GUI for Geometry component
//
// Copyright (C) 2003  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
//
// File   : MeasureGUI_NormaleDlg.cxx
// Author : Julia DOROVSKIKH, Open CASCADE S.A.S.
//

#include "MeasureGUI_NormaleDlg.h"

#include <DlgRef.h>
#include <GEOMBase.h>
#include <GeometryGUI.h>

#include <SUIT_Session.h>
#include <SUIT_ResourceMgr.h>
#include <SalomeApp_Application.h>
#include <LightApp_SelectionMgr.h>

#include <GEOMImpl_Types.hxx>

#include <TopoDS_Shape.hxx>
#include <TopoDS.hxx>
#include <TopExp.hxx>
#include <TColStd_IndexedMapOfInteger.hxx>
#include <TopTools_IndexedMapOfShape.hxx>

//=================================================================================
// class    : MeasureGUI_NormaleDlg()
// purpose  : Constructs a MeasureGUI_NormaleDlg which is a child of 'parent', with the
//            name 'name' and widget flags set to 'f'.
//            The dialog will by default be modeless, unless you set 'modal' to
//            TRUE to construct a modal dialog.
//=================================================================================
MeasureGUI_NormaleDlg::MeasureGUI_NormaleDlg( GeometryGUI* theGeometryGUI, QWidget* parent )
  : GEOMBase_Skeleton( theGeometryGUI, parent, false )
{
  SUIT_ResourceMgr* aResMgr = SUIT_Session::session()->resourceMgr();
  QPixmap image0( aResMgr->loadPixmap( "GEOM", tr( "ICON_DLG_NORMALE" ) ) );
  QPixmap image1( aResMgr->loadPixmap( "GEOM", tr( "ICON_SELECT" ) ) );

  setWindowTitle( tr( "GEOM_NORMALE_TITLE" ) );

  /***************************************************************/
  mainFrame()->GroupConstructors->setTitle( tr( "GEOM_NORMALE" ) );
  mainFrame()->RadioButton1->setIcon( image0 );
  mainFrame()->RadioButton2->setAttribute( Qt::WA_DeleteOnClose );
  mainFrame()->RadioButton2->close();
  mainFrame()->RadioButton3->setAttribute( Qt::WA_DeleteOnClose );
  mainFrame()->RadioButton3->close();

  GroupArgs = new DlgRef_2Sel ( centralWidget() );
  GroupArgs->GroupBox1->setTitle( tr( "GEOM_ARGUMENTS" ) );

  GroupArgs->TextLabel1->setText( tr( "GEOM_FACE" ) );
  GroupArgs->TextLabel2->setText( tr( "GEOM_POINT" ) );

  GroupArgs->PushButton1->setIcon( image1 );
  GroupArgs->PushButton2->setIcon( image1 );

  QVBoxLayout* layout = new QVBoxLayout( centralWidget() );
  layout->setMargin( 0 ); layout->setSpacing( 6 );
  layout->addWidget( GroupArgs );

  /***************************************************************/

  setHelpFileName("using_measurement_tools_page.html#normale_anchor");

  Init();
}

//=================================================================================
// function : ~MeasureGUI_NormaleDlg()
// purpose  : Destroys the object and frees any allocated resources
//=================================================================================
MeasureGUI_NormaleDlg::~MeasureGUI_NormaleDlg()
{
}

//=================================================================================
// function : Init()
// purpose  :
//=================================================================================
void MeasureGUI_NormaleDlg::Init()
{
  /* init variables */
  GroupArgs->LineEdit1->setReadOnly( true );
  GroupArgs->LineEdit2->setReadOnly( true );

  myFace = GEOM::GEOM_Object::_nil();
  myPoint = GEOM::GEOM_Object::_nil();

  myEditCurrentArgument = GroupArgs->LineEdit1;
  globalSelection( GEOM_FACE ); // to close previous local selection
  localSelection( GEOM::GEOM_Object::_nil(), TopAbs_FACE );

  /* signals and slots connections */
  connect( buttonOk(),    SIGNAL( clicked() ), this, SLOT( ClickOnOk() ) );
  connect( buttonApply(), SIGNAL( clicked() ), this, SLOT( ClickOnApply() ) );

  connect( GroupArgs->PushButton1, SIGNAL( clicked() ), this, SLOT( SetEditCurrentArgument() ) );
  connect( GroupArgs->PushButton2, SIGNAL( clicked() ), this, SLOT( SetEditCurrentArgument() ) );

  connect( GroupArgs->LineEdit1,   SIGNAL( returnPressed() ), this, SLOT( LineEditReturnPressed() ) );
  connect( GroupArgs->LineEdit2,   SIGNAL( returnPressed() ), this, SLOT( LineEditReturnPressed() ) );

  connect( myGeomGUI->getApp()->selectionMgr(),
	   SIGNAL( currentSelectionChanged() ), this, SLOT( SelectionIntoArgument() ) );

  initName(tr("GEOM_VECTOR_NORMALE"));

  SelectionIntoArgument();
}

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

//=================================================================================
// function : ClickOnApply()
// purpose  :
//=================================================================================
bool MeasureGUI_NormaleDlg::ClickOnApply()
{
  if ( !onAccept() )
    return false;

  initName();
  return true;
}

//=================================================================================
// function : SelectionIntoArgument()
// purpose  : Called when selection as changed or other case
//=================================================================================
void MeasureGUI_NormaleDlg::SelectionIntoArgument()
{
  erasePreview();
  myEditCurrentArgument->setText( "" );

  if ( myEditCurrentArgument == GroupArgs->LineEdit1 ) {
    myFace = GEOM::GEOM_Object::_nil();
  }
  else if ( myEditCurrentArgument == GroupArgs->LineEdit2 ) {
    myPoint = GEOM::GEOM_Object::_nil();
  }
  
  LightApp_SelectionMgr* aSelMgr = myGeomGUI->getApp()->selectionMgr();
  SALOME_ListIO aSelList;
  aSelMgr->selectedObjects(aSelList);

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

  // nbSel == 1
  Standard_Boolean testResult = Standard_False;
  GEOM::GEOM_Object_var aSelectedObject =
    GEOMBase::ConvertIOinGEOMObject(aSelList.First(), testResult);

  if ( !testResult )
    return;

  QString aName = GEOMBase::GetName( aSelectedObject );

  if ( myEditCurrentArgument == GroupArgs->LineEdit1 ) {
    TopoDS_Shape aShape;
    if ( GEOMBase::GetShape( aSelectedObject, aShape, TopAbs_SHAPE ) && !aShape.IsNull() )
    {
      TColStd_IndexedMapOfInteger aMap;
      aSelMgr->GetIndexes(aSelList.First(), aMap);
      if ( aMap.Extent() == 1 ) // Local Selection
      {
        GEOM::GEOM_IShapesOperations_var aShapesOp = getGeomEngine()->GetIShapesOperations( getStudyId() );
        int anIndex = aMap( 1 );
        aSelectedObject = aShapesOp->GetSubShape( aSelectedObject, anIndex );
        aName += QString( ":face_%1" ).arg( anIndex );
      }
      else // Global Selection
      {
	if ( aShape.ShapeType() != TopAbs_FACE ) {
          aSelectedObject = GEOM::GEOM_Object::_nil();
          aName = "";
	}
      }
    }
    myFace = aSelectedObject;
  }
  else if ( myEditCurrentArgument == GroupArgs->LineEdit2 ) {
    TopoDS_Shape aShape;
    if ( GEOMBase::GetShape( aSelectedObject, aShape, TopAbs_SHAPE ) && !aShape.IsNull() )
    {
      TColStd_IndexedMapOfInteger aMap;
      aSelMgr->GetIndexes(aSelList.First(), aMap);
      if ( aMap.Extent() == 1 ) // Local Selection
      {
        GEOM::GEOM_IShapesOperations_var aShapesOp = getGeomEngine()->GetIShapesOperations( getStudyId() );
        int anIndex = aMap( 1 );
        aSelectedObject = aShapesOp->GetSubShape( aSelectedObject, anIndex );
        aName += QString( ":vertex_%1" ).arg( anIndex );
      }
      else // Global Selection
      {
	if ( aShape.ShapeType() != TopAbs_VERTEX ) {
          aSelectedObject = GEOM::GEOM_Object::_nil();
          aName = "";
	}
      }
    }
    myPoint = aSelectedObject;
  }

  myEditCurrentArgument->setText( aName );

  displayPreview();
}

//=================================================================================
// function : LineEditReturnPressed()
// purpose  :
//=================================================================================
void MeasureGUI_NormaleDlg::LineEditReturnPressed()
{
  QLineEdit* send = (QLineEdit*)sender();
  if ( send == GroupArgs->LineEdit1 ||
       send == GroupArgs->LineEdit2 ) {
    myEditCurrentArgument = send;
    GEOMBase_Skeleton::LineEditReturnPressed();
  }
}

//=================================================================================
// function : SetEditCurrentArgument()
// purpose  :
//=================================================================================
void MeasureGUI_NormaleDlg::SetEditCurrentArgument()
{
  QPushButton* send = (QPushButton*)sender();
  globalSelection( GEOM_FACE );

  if ( send == GroupArgs->PushButton1 ) {
    myEditCurrentArgument = GroupArgs->LineEdit1;
    localSelection( GEOM::GEOM_Object::_nil(), TopAbs_FACE );
  }
  else if ( send == GroupArgs->PushButton2 ) {
    myEditCurrentArgument = GroupArgs->LineEdit2;
    localSelection( GEOM::GEOM_Object::_nil(), TopAbs_VERTEX );
  }

  myEditCurrentArgument->setFocus();
  SelectionIntoArgument();
}

//=================================================================================
// function : ActivateThisDialog()
// purpose  :
//=================================================================================
void MeasureGUI_NormaleDlg::ActivateThisDialog()
{
  GEOMBase_Skeleton::ActivateThisDialog();

  SelectionIntoArgument();
}

//=================================================================================
// function : enterEvent()
// purpose  :
//=================================================================================
void MeasureGUI_NormaleDlg::enterEvent( QEvent* e )
{
  if ( !mainFrame()->GroupConstructors->isEnabled() )
    ActivateThisDialog();
}

//=================================================================================
// function : createOperation
// purpose  :
//=================================================================================
GEOM::GEOM_IOperations_ptr MeasureGUI_NormaleDlg::createOperation()
{
  return getGeomEngine()->GetIMeasureOperations( getStudyId() );
}

//=================================================================================
// function : isValid
// purpose  :
//=================================================================================
bool MeasureGUI_NormaleDlg::isValid( QString& )
{
  //return !CORBA::is_nil(myFace) && !CORBA::is_nil(myPoint);
  return !CORBA::is_nil( myFace );
}

//=================================================================================
// function : execute
// purpose  :
//=================================================================================
bool MeasureGUI_NormaleDlg::execute( ObjectList& objects )
{
  GEOM::GEOM_Object_var anObj =
    GEOM::GEOM_IMeasureOperations::_narrow( getOperation() )->GetNormal( myFace, myPoint );

  if ( !anObj->_is_nil() )
    objects.push_back( anObj._retn() );

  return true;
}