//  SMESH SMESH : implementaion of SMESH idl descriptions
//
//  Copyright (C) 2003  CEA
//
//  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   : StdMeshers_Propagation.hxx
//  Module : SMESH
//  $Header$

#ifndef _SMESH_PROPAGATION_HXX_
#define _SMESH_PROPAGATION_HXX_

#include "SMESH_StdMeshers.hxx"

#include "SMESH_Hypothesis.hxx"
#include "SMESH_subMeshEventListener.hxx"
#include "Utils_SALOME_Exception.hxx"

#include <TopoDS_Edge.hxx>


// =======================================================================
/*!
 * \brief Propagation hypothesis
 */
// =======================================================================

class STDMESHERS_EXPORT StdMeshers_Propagation:public SMESH_Hypothesis
{
 public:
  StdMeshers_Propagation(int hypId, int studyId, SMESH_Gen * gen);
  virtual ~ StdMeshers_Propagation();

  virtual std::ostream & SaveTo(std::ostream & save);
  virtual std::istream & LoadFrom(std::istream & load);
  friend std::ostream & operator <<(std::ostream & save, StdMeshers_Propagation & hyp);
  friend std::istream & operator >>(std::istream & load, StdMeshers_Propagation & hyp);

  static std::string GetName ();

  /*!
   * \brief Set EventListener managing propagation of hypotheses
    * \param subMesh - edge submesh to set event listener on
   * 
   * 1D algo is expected to call this method from it's SetEventListener()
   */
  static void SetPropagationMgr(SMESH_subMesh* subMesh);

  /*!
   * \brief Return an edge from which hypotheses are propagated
    * \param theMesh - mesh
    * \param theEdge - edge to which hypotheses are propagated
    * \retval TopoDS_Edge - source edge, also passing orientation
   */
  static TopoDS_Edge GetPropagationSource(SMESH_Mesh& theMesh, const TopoDS_Shape& theEdge);

  /*!
   * \brief Initialize my parameter values by the mesh built on the geometry
    * \param theMesh - the built mesh
    * \param theShape - the geometry of interest
    * \retval bool - true if parameter values have been successfully defined
    *
    * Just return false as this hypothesis does not have parameters values
   */
  virtual bool SetParametersByMesh(const SMESH_Mesh* theMesh, const TopoDS_Shape& theShape);
};
#endif
