//  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 SMDS : implementaion of Salome mesh data structure
//  File   : SMDS_MeshGroup.cxx
//  Author : Jean-Michel BOULCOURT
//  Module : SMESH
//
#ifdef _MSC_VER
#pragma warning(disable:4786)
#endif

#include "SMDS_MeshGroup.hxx"
#include "utilities.h"

using namespace std;

//=======================================================================
//function : SMDS_MeshGroup
//purpose  : 
//=======================================================================

SMDS_MeshGroup::SMDS_MeshGroup(const SMDS_Mesh * theMesh,
                               const SMDSAbs_ElementType theType)
	:myMesh(theMesh),myType(theType), myParent(NULL)
{
}

//=======================================================================
//function : SMDS_MeshGroup
//purpose  : 
//=======================================================================

SMDS_MeshGroup::SMDS_MeshGroup(SMDS_MeshGroup * theParent,
                               const SMDSAbs_ElementType theType)
	:myMesh(theParent->myMesh),myType(theType), myParent(theParent)
{
}

//=======================================================================
//function : AddSubGroup
//purpose  : 
//=======================================================================

const SMDS_MeshGroup *SMDS_MeshGroup::AddSubGroup
                (const SMDSAbs_ElementType theType)
{
	const SMDS_MeshGroup * subgroup = new SMDS_MeshGroup(this,theType);
	myChildren.insert(myChildren.end(),subgroup);
	return subgroup;
}

//=======================================================================
//function : RemoveSubGroup
//purpose  : 
//=======================================================================

bool SMDS_MeshGroup::RemoveSubGroup(const SMDS_MeshGroup * theGroup)
{
	bool found = false;	
	list<const SMDS_MeshGroup*>::iterator itgroup;
	for(itgroup=myChildren.begin(); itgroup!=myChildren.end(); itgroup++)
	{
		const SMDS_MeshGroup* subgroup=*itgroup;
		if (subgroup == theGroup)
		{
			found = true;
			myChildren.erase(itgroup);
		}
	}

	return found;
}

//=======================================================================
//function : RemoveFromParent
//purpose  : 
//=======================================================================

bool SMDS_MeshGroup::RemoveFromParent()
{
	
	if (myParent==NULL) return false;
	else
	{
		return (myParent->RemoveSubGroup(this));
	}
}
//=======================================================================
//function : Clear
//purpose  : 
//=======================================================================

void SMDS_MeshGroup::Clear()
{
	myElements.clear();
	myType = SMDSAbs_All;
}

//=======================================================================
//function : Add
//purpose  : 
//=======================================================================

void SMDS_MeshGroup::Add(const SMDS_MeshElement * theElem)
{
	// the type of the group is determined by the first element added
	if (myElements.empty()) myType = theElem->GetType();
	else if (theElem->GetType() != myType) {
	  MESSAGE("SMDS_MeshGroup::Add : Type Mismatch "<<theElem->GetType()<<"!="<<myType);
	  return;
	}
	
	myElements.insert(theElem);
}

//=======================================================================
//function : Remove
//purpose  : 
//=======================================================================

bool SMDS_MeshGroup::Remove(const SMDS_MeshElement * theElem)
{
  std::set<const SMDS_MeshElement *>::iterator found
    = myElements.find(theElem);
  if ( found != myElements.end() ) {
    myElements.erase(found);
    if (myElements.empty()) myType = SMDSAbs_All;
    return true;
  }
  return false;
}

//=======================================================================
//function : Contains
//purpose  : 
//=======================================================================

bool SMDS_MeshGroup::Contains(const SMDS_MeshElement * theElem) const
{
	return myElements.find(theElem)!=myElements.end();
}

//=======================================================================
//function : SetType
//purpose  : 
//=======================================================================

void SMDS_MeshGroup::SetType(const SMDSAbs_ElementType theType)
{
  if (IsEmpty())
    myType = theType;
}