kmplot/kmplot/keditconstant.cpp

   1 /*
   2 * KmPlot - a math. function plotter for the KDE-Desktop
   3 *
   4 * Copyright (C) 2004  Fredrik Edemar
   5 *                     f_edemar@linux.se
   6 *
   7 * This file is part of the KDE Project.
   8 * KmPlot is part of the KDE-EDU Project.
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License as published by
  12 * the Free Software Foundation; either version 2 of the License, or
  13 * (at your option) any later version.
  14 *
  15 * This program is distributed in the hope that it will be useful,
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 * GNU General Public License for more details.
  19 *
  20 * You should have received a copy of the GNU General Public License
  21 * along with this program; if not, write to the Free Software
  22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  23 *
  24 */
  25
  26 #include <kdebug.h>
  27 #include <klineedit.h>
  28 #include <klocale.h>
  29 #include <kmessagebox.h>
  30 #include <qpushbutton.h>
  31
  32
  33 #include "keditconstant.h"
  34
  35 KEditConstant::KEditConstant(XParser *p, char &c, QString &v, QWidget *parent, const char *name)
  36         : QEditConstant(parent, name,Qt::WDestructiveClose), constant(c), value(v), m_parser(p)
  37 {
  38         if ( constant != '0' )
  39         {
  40                 txtConstant->setEnabled(false);
  41                 txtConstant->setText(QChar(constant));
  42                 txtValue->setText(value);
  43                 txtValue->setFocus();
  44                 txtValue->selectAll();
  45         }
  46         connect( cmdCancel, SIGNAL( clicked() ), this, SLOT( deleteLater() ));
  47         connect( cmdOK, SIGNAL( clicked() ), this, SLOT( cmdOK_clicked() ));
  48 }
  49
  50
  51 KEditConstant::~KEditConstant()
  52 {
  53 }
  54
  55 void KEditConstant::cmdOK_clicked()
  56 {
  57         constant = txtConstant->text().at(0).latin1();
  58         value = txtValue->text();
  59         if ( constant<'A' || constant>'Z')
  60         {
  61                 KMessageBox::error(this, i18n("Please insert a valid constant name between A and Z."));
  62                 txtConstant->setFocus();
  63                 txtConstant->selectAll();
  64                 return;
  65         }
  66
  67         if ( txtConstant->isEnabled() ) //creating, not edit a constant
  68         {
  69                 bool found= false;
  70                 QValueVector<Constant>::iterator it;
  71                 for(it = m_parser->constant.begin(); it!= m_parser->constant.end() && !found;++it)
  72                 {
  73                         if ( it->constant == constant)
  74                                         found = true;
  75                 }
  76                 if (found)
  77                 {
  78                         KMessageBox::error(this, i18n("The constant already exists."));
  79                         return;
  80                 }
  81         }
  82         (double) m_parser->eval(value);
  83         if ( m_parser->parserError() )
  84         {
  85                 txtValue->setFocus();
  86                 txtValue->selectAll();
  87                 return;
  88         }
  89
  90         emit finished();
  91         QDialog::accept();
  92 }
  93
  94 void KEditConstant::txtVariable_lostFocus()
  95 {
  96     txtConstant->setText( txtConstant->text().upper() );
  97 }
  98
  99 #include "keditconstant.moc"
 100