//  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   : EntityGUI_SubShapeDlg.cxx
//  Author : Lucien PIGNOLONI
//  Module : GEOM
//  $Header$

#include "EntityGUI_SubShapeDlg.h"
#include "GEOM_Displayer.h"

#include "SUIT_Desktop.h"
#include "SUIT_Session.h"
#include "OCCViewer_ViewModel.h"
#include "SalomeApp_Application.h"
#include "LightApp_SelectionMgr.h"
#include "SALOME_ListIteratorOfListIO.hxx"

#include <TColStd_IndexedMapOfInteger.hxx>
#include <TopoDS_Iterator.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_MapOfShape.hxx>

#include <qmessagebox.h>
#include <qlabel.h>
#include <qcombobox.h>

//=================================================================================
// class    : EntityGUI_SubShapeDlg
// purpose  : Constructs a EntityGUI_SubShapeDlg 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.
//=================================================================================
EntityGUI_SubShapeDlg::EntityGUI_SubShapeDlg(GeometryGUI* theGeometryGUI, QWidget* parent,
                                             const char* name, bool modal, WFlags fl)
  :GEOMBase_Skeleton(theGeometryGUI, parent, name, modal, fl)
{
  QPixmap image0(SUIT_Session::session()->resourceMgr()->loadPixmap("GEOM",tr("ICON_DLG_SUBSHAPE")));
  QPixmap image1(SUIT_Session::session()->resourceMgr()->loadPixmap("GEOM",tr("ICON_SELECT")));

  setCaption(tr("GEOM_SUBSHAPE_TITLE"));

  /***************************************************************/
  GroupConstructors->setTitle(tr("GEOM_SUB_SHAPE"));
  RadioButton1->setPixmap(image0);
  RadioButton2->close(TRUE);
  RadioButton3->close(TRUE);

  GroupPoints = new DlgRef_1Sel1Check1List_QTD(this, "GroupPoints");
  GroupPoints->GroupBox1->setTitle(tr("GEOM_ARGUMENTS"));
  GroupPoints->TextLabel1->setText(tr("GEOM_MAIN_OBJECT"));
  GroupPoints->TextLabel2->setText(tr("GEOM_SUBSHAPE_TYPE"));
  GroupPoints->CheckButton1->setText(tr("GEOM_SUBSHAPE_SELECT"));
  GroupPoints->PushButton1->setPixmap(image1);
  GroupPoints->LineEdit1->setReadOnly( true );

  Layout1->addWidget(GroupPoints, 1, 0);
  /***************************************************************/

  setHelpFileName("explode.htm");

  Init();
}


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


//=================================================================================
// function : Init()
// purpose  :
//=================================================================================
void EntityGUI_SubShapeDlg::Init()
{
  /* init variables */
  myEditCurrentArgument = GroupPoints->LineEdit1;
  myObject = GEOM::GEOM_Object::_nil();

  myWithShape = true;

  /* type for sub shape selection */
  GroupPoints->ComboBox1->insertItem("Compound");
  GroupPoints->ComboBox1->insertItem("Compsolid");
  GroupPoints->ComboBox1->insertItem("Solid");
  GroupPoints->ComboBox1->insertItem("Shell");
  GroupPoints->ComboBox1->insertItem("Face");
  GroupPoints->ComboBox1->insertItem("Wire");
  GroupPoints->ComboBox1->insertItem("Edge");
  GroupPoints->ComboBox1->insertItem("Vertex");
  GroupPoints->ComboBox1->insertItem("Shape");

  if (SUIT_Session::session()->activeApplication()->desktop()->activeWindow()->getViewManager()->getType() 
      != OCCViewer_Viewer::Type())
    GroupPoints->CheckButton1->setEnabled(false);

  /* signals and slots connections */
  connect(myGeomGUI, SIGNAL(SignalDeactivateActiveDialog()), this, SLOT(DeactivateActiveDialog()));

  connect(buttonOk, SIGNAL(clicked()), this, SLOT(ClickOnOk()));
  connect(buttonApply, SIGNAL(clicked()), this, SLOT(ClickOnApply()));

  connect(GroupPoints->PushButton1, SIGNAL(clicked()), this, SLOT(SetEditCurrentArgument()));
  connect(GroupPoints->LineEdit1, SIGNAL(returnPressed()), this, SLOT(LineEditReturnPressed()));

  connect(GroupPoints->ComboBox1, SIGNAL(activated(int)), this, SLOT(ComboTextChanged()));
  connect(GroupPoints->CheckButton1, SIGNAL(stateChanged(int)), this, SLOT(SubShapeToggled()));

  connect(((SalomeApp_Application*)(SUIT_Session::session()->activeApplication()))->selectionMgr(), 
	  SIGNAL(currentSelectionChanged()), this, SLOT(SelectionIntoArgument())) ;

  updateButtonState();

  SelectionIntoArgument();
}


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


//=================================================================================
// function : ClickOnApply()
// purpose  :
//=================================================================================
bool EntityGUI_SubShapeDlg::ClickOnApply()
{
  SUIT_Session::session()->activeApplication()->putInfo(tr(""));
    
  /* Explode all sub shapes */
  if( isAllSubShapes() ) {
    /* More than 30 subshapes : ask confirmation */
    unsigned int nb = NumberOfSubShapes(myShape, shapeType());
    if(nb > 30) {
      const QString caption = tr("GEOM_CONFIRM");
      const QString text = tr("GEOM_CONFIRM_INFO").arg(nb);
      const QString button0 = tr("GEOM_BUT_EXPLODE");
      const QString button1 = tr("GEOM_BUT_CANCEL");

      if(QMessageBox::warning(this, caption, text, button0, button1) != 0)
        return false;  /* aborted */
    }
  }

  return onAccept();
}


//=================================================================================
// function : SelectionIntoArgument()
// purpose  : Called when selection as changed or other case
//          : used only by SelectButtonC1A1 (LineEditC1A1)
//=================================================================================
void EntityGUI_SubShapeDlg::SelectionIntoArgument()
{
  if ( !isAllSubShapes() )
    return;

  ResetStateOfDialog();

  QString aString = ""; /* name of selection */

  int nbSel = GEOMBase::GetNameOfSelectedIObjects( selectedIO(), aString, true );
  if( nbSel != 1 )
    return;

  TopoDS_Shape S;
  Handle(SALOME_InteractiveObject) IO = firstIObject();
  if ( !IO->hasEntry() )
  {
    SUIT_Session::session()->activeApplication()->putInfo( tr( "GEOM_PRP_SHAPE_IN_STUDY" ) );
    updateButtonState();
    return;
  }

  if ( !GEOMBase::GetTopoFromSelection( selectedIO(), S ) ||
       S.IsNull() ||
       S.ShapeType() == TopAbs_VERTEX )
  {
    updateButtonState();
    return;
  }


  Standard_Boolean testResult;
  myObject = GEOMBase::ConvertIOinGEOMObject( IO, testResult );
  if ( !testResult || myObject->_is_nil() )
  {
    updateButtonState();
    return;
  }

  myShape = S;
  GroupPoints->LineEdit1->setText( aString );


  int SelectedShapeType = GroupPoints->ComboBox1->currentItem();
  int count = GroupPoints->ComboBox1->count();

  if ( myWithShape )
    count = count - 1;

  int i = 0;
  // Solving PAL5590
  if ( myShape.ShapeType() == TopAbs_COMPOUND ) {
    unsigned int nb = NumberOfSubShapes(myShape, TopAbs_COMPOUND);
    if (nb > 0)
      i++;
  }
  while ( i <= myShape.ShapeType())
  {
    GroupPoints->ComboBox1->removeItem( 0 );
    i++;
  }

  if ( myShape.ShapeType() == TopAbs_COMPOUND )
  {
    if ( myWithShape == false )
    {
      GroupPoints->ComboBox1->insertItem( "Shape" );
      myWithShape = true;
    }
  }
  else
  {
    if ( myWithShape == true )
    {
      GroupPoints->ComboBox1->removeItem( GroupPoints->ComboBox1->count() - 1 );
      myWithShape = false;
    }
  }

  int count1 = GroupPoints->ComboBox1->count();
  if ( myWithShape )
    count1 = count1 - 1;

  if ( SelectedShapeType > myShape.ShapeType() )
  {
    if ( SelectedShapeType == 8 )
    {
      if ( myShape.ShapeType() != TopAbs_COMPOUND )
      {
        GroupPoints->ComboBox1->setCurrentItem( 0 );
        ComboTextChanged();
      }
    }
    else
      GroupPoints->ComboBox1->setCurrentItem(count1 - count + SelectedShapeType);
  }
  else
  {
    GroupPoints->ComboBox1->setCurrentItem( 0 );
    ComboTextChanged();
  }

  updateButtonState();
}


//=================================================================================
// function : SetEditCurrentArgument()
// purpose  :
//=================================================================================
void EntityGUI_SubShapeDlg::SetEditCurrentArgument()
{
  GroupPoints->LineEdit1->setFocus();
  myEditCurrentArgument = GroupPoints->LineEdit1;
  
  GroupPoints->CheckButton1->setChecked( FALSE );
  SubShapeToggled();
  SelectionIntoArgument();
}


//=================================================================================
// function : LineEditReturnPressed()
// purpose  :
//=================================================================================
void EntityGUI_SubShapeDlg::LineEditReturnPressed()
{  
  QLineEdit* send = (QLineEdit*)sender();
  if(send == GroupPoints->LineEdit1)
    SetEditCurrentArgument();
  else
    return;

  GEOMBase_Skeleton::LineEditReturnPressed();
}


//=================================================================================
// function : DeactivateActiveDialog()
// purpose  :
//=================================================================================
void EntityGUI_SubShapeDlg::DeactivateActiveDialog()
{
  if (GroupConstructors->isEnabled()) {
    GEOMBase_Skeleton::DeactivateActiveDialog();
  }
}


//=================================================================================
// function : ActivateThisDialog()
// purpose  :
//=================================================================================
void EntityGUI_SubShapeDlg::ActivateThisDialog()
{
  GEOMBase_Skeleton::ActivateThisDialog();
  connect(((SalomeApp_Application*)(SUIT_Session::session()->activeApplication()))->selectionMgr(), 
	  SIGNAL(currentSelectionChanged()), this, SLOT(SelectionIntoArgument())) ;
  SubShapeToggled();
  updateButtonState();
}


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

//=================================================================================
// function : ResetStateOfDialog()
// purpose  : Completely reset the state of method including local context
//=================================================================================
void EntityGUI_SubShapeDlg::ResetStateOfDialog()
{
  myObject = GEOM::GEOM_Object::_nil();
  myShape.Nullify();
  myEditCurrentArgument->setText("");

  int SelectedShapeType = GroupPoints->ComboBox1->currentItem();
  int count = GroupPoints->ComboBox1->count();
  if ( myWithShape )
    count = count - 1;

  /* type for sub shape selection */
  GroupPoints->ComboBox1->clear();
  GroupPoints->ComboBox1->insertItem("Compound");
  GroupPoints->ComboBox1->insertItem("Compsolid");
  GroupPoints->ComboBox1->insertItem("Solid");
  GroupPoints->ComboBox1->insertItem("Shell");
  GroupPoints->ComboBox1->insertItem("Face");
  GroupPoints->ComboBox1->insertItem("Wire");
  GroupPoints->ComboBox1->insertItem("Edge");
  GroupPoints->ComboBox1->insertItem("Vertex");
  GroupPoints->ComboBox1->insertItem("Shape");
  
  myWithShape = true;
  
  GroupPoints->ComboBox1->setCurrentItem( 8 - count + SelectedShapeType );
  ComboTextChanged();

  updateButtonState();
}


//=================================================================================
// function : SubShapeToggled()
// purpose  : Allow user selection of all or only selected sub shapes
//          : Called when 'CheckButton1' state change
//=================================================================================
void EntityGUI_SubShapeDlg::SubShapeToggled()
{
  if ( isAllSubShapes() )
    globalSelection( GEOM_ALLSHAPES );
  else
    localSelection( myObject, shapeType() );
}


//=================================================================================
// function : ComboTextChanged()
// purpose  : 
//=================================================================================
void EntityGUI_SubShapeDlg::ComboTextChanged()
{
  /* Select sub shapes mode not checked */
  updateButtonState();
  SubShapeToggled();    
}


//=================================================================================
// function : NumberOfSubShapes()
// purpose  :
//=================================================================================
unsigned int EntityGUI_SubShapeDlg::NumberOfSubShapes (const TopoDS_Shape& S,
                                                       const int shapeType) const
{
  if (S.IsNull())
    return 0;

  unsigned int index = 0;
  TopTools_MapOfShape M;

  if (S.ShapeType() == TopAbs_COMPOUND &&
      (TopAbs_ShapeEnum(shapeType) == TopAbs_SHAPE ||
       TopAbs_ShapeEnum(shapeType) == TopAbs_COMPSOLID ||
       TopAbs_ShapeEnum(shapeType) == TopAbs_COMPOUND)) {
    TopoDS_Iterator It (S, Standard_True, Standard_True);
    for (; It.More(); It.Next()) {
      if (M.Add(It.Value())) {
        if (TopAbs_ShapeEnum(shapeType) == TopAbs_SHAPE ||
            TopAbs_ShapeEnum(shapeType) == It.Value().ShapeType()) {
          index++;
        }
      }
    }
  } else {
    TopExp_Explorer Exp (S, TopAbs_ShapeEnum(shapeType));
    for (; Exp.More(); Exp.Next()) {
      if (M.Add(Exp.Current())) {
        index++;
      }
    }
  }

  M.Clear();
  return index;
}

//=================================================================================
// function : updateButtonState
// purpose  :
//=================================================================================
void EntityGUI_SubShapeDlg::updateButtonState()
{
  if ( SUIT_Session::session()->activeApplication()->desktop()->activeWindow()->getViewManager()->getType() != OCCViewer_Viewer::Type() ||
       myObject->_is_nil() || shapeType() == TopAbs_SHAPE || shapeType() == TopAbs_COMPOUND ) {
    GroupPoints->CheckButton1->setChecked( FALSE );
    GroupPoints->CheckButton1->setEnabled( FALSE );
  }
  else
    GroupPoints->CheckButton1->setEnabled( TRUE );
}

//=================================================================================
// function : isAllSubShapes
// purpose  :
//=================================================================================
bool EntityGUI_SubShapeDlg::isAllSubShapes() const
{
  return !GroupPoints->CheckButton1->isChecked() || !GroupPoints->CheckButton1->isEnabled();
}

//=================================================================================
// function : shapeType
// purpose  :
//=================================================================================
int EntityGUI_SubShapeDlg::shapeType() const
{
  int type = GroupPoints->ComboBox1->currentItem();

  if (myObject->_is_nil())
    return type;

  // Solving PAL5590
  type += myShape.ShapeType() + 1;
  if (myShape.ShapeType() == TopAbs_COMPOUND &&
      NumberOfSubShapes(myShape, TopAbs_COMPOUND) > 0) {
    type--;
  }

  return type;
}

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

//=================================================================================
// function : isValid
// purpose  :
//=================================================================================
bool EntityGUI_SubShapeDlg::isValid( QString& msg )
{
  bool isOk = false;
  if ( !myObject->_is_nil() ) {
    if ( isAllSubShapes() )
      isOk = true;
    else if ( IObjectCount() == 1 ) {
      Standard_Boolean aResult = Standard_False;
      GEOM::GEOM_Object_var anObj =
	GEOMBase::ConvertIOinGEOMObject( firstIObject(), aResult );
      
      if ( aResult && !anObj->_is_nil() ) {
	TColStd_IndexedMapOfInteger aMapIndex;
	((SalomeApp_Application*)(SUIT_Session::session()->activeApplication()))->selectionMgr()->GetIndexes( firstIObject(), aMapIndex );
	isOk = aMapIndex.Extent() > 0;
	if ( !isOk )
	  msg += tr( "NO_SUBSHAPES_SELECTED" );
      }
    }
  }
  return isOk;
}

//=================================================================================
// function : execute
// purpose  :
//=================================================================================
bool EntityGUI_SubShapeDlg::execute( ObjectList& objects )
{
  GEOM::ListOfGO_var aList = GEOM::GEOM_IShapesOperations::_narrow(
    getOperation() )->MakeExplode( myObject, shapeType(), false );
    
  if ( !aList->length() )
    return false;
  
  // Throw away sub-shapes not selected by user if not in preview mode 
  // and manual selection is active
  if ( !isAllSubShapes() )
  {
    if ( IObjectCount() == 1 ) {
      Standard_Boolean aResult = Standard_False;
      GEOM::GEOM_Object_var anObj =
	GEOMBase::ConvertIOinGEOMObject( firstIObject(), aResult );

      if ( aResult && !anObj->_is_nil() ) {
	TColStd_IndexedMapOfInteger aMapIndex;
	((SalomeApp_Application*)(SUIT_Session::session()->activeApplication()))->selectionMgr()->GetIndexes( firstIObject(), aMapIndex );

	GEOM::GEOM_ILocalOperations_var aLocOp = 
	  getGeomEngine()->GetILocalOperations( getStudyId() );

	for ( int i = 0, n = aList->length(); i < n; i++ )
	  if ( aMapIndex.Contains( aLocOp->GetSubShapeIndex( myObject, aList[i] ) ) )
	    objects.push_back( GEOM::GEOM_Object::_duplicate( aList[i] ) );
      }
    }
  }
  else
    for ( int i = 0, n = aList->length(); i < n; i++ )
      objects.push_back( GEOM::GEOM_Object::_duplicate( aList[i] ) );
  
  return objects.size();
}

//================================================================
// Function : getFather
// Purpose  : Get father object for object to be added in study
//            ( called with addInStudy method )
//================================================================
GEOM::GEOM_Object_ptr EntityGUI_SubShapeDlg::getFather( GEOM::GEOM_Object_ptr )
{
  return myObject;
}

const char* EntityGUI_SubShapeDlg::getNewObjectName() const
{
  return "";
}