smesh/src/SMESHGUI/SMESHGUI_IdValidator.h

//  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 SMESHGUI : GUI for SMESH component
// File   : SMESHGUI_IdValidator.h
// Author : Edward AGAPOV, Open CASCADE S.A.S.
//
#ifndef SMESHGUI_IDVALIDATOR_H
#define SMESHGUI_IDVALIDATOR_H

// SMESH includes
#include "SMESH_SMESHGUI.hxx"

// Qt includes
#include <QValidator>

// validator for manual input of Ids

class SMESHGUI_EXPORT SMESHGUI_IdValidator : public QValidator
{
public:
  SMESHGUI_IdValidator( QWidget* parent, const int maxNbId = 0 ) :
    QValidator( parent ), myMaxNbId( maxNbId ) {}

  State validate( QString& input, int& pos ) const
  { 
    input.replace( QRegExp(" *[^0-9]+ *"), " " ); 
    if ( myMaxNbId && input.length() > myMaxNbId ) {
      // truncate extra ids
      int ind = 0, nbId = 0;
      while ( ind < input.length() ) {
	if ( input.at( ind ) != ' ' ) {
	  if ( ++nbId > myMaxNbId ) {
	    input.truncate( ind );
	    break;
	  }
	  ind = input.indexOf( ' ', ind );
	  if ( ind < 0 ) break;
	}
	ind++;
      }
    }
    if ( pos > input.length() )
      pos = input.length();
    return Acceptable;
  }

private:
  int myMaxNbId;
};

#endif // SMESHGUI_IDVALIDATOR_H