/*
 *
 *
 * Implementation of KRestrictedLine
 *
 * Copyright (C) 1997 Michael Wiedmann, <mw@miwie.in-berlin.de>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#include "krestrictedline.h"

#include <QtCore/QCOORD>
#include <QtGui/QKeyEvent>

class KRestrictedLinePrivate
{
public:
  /// QString of valid characters for this line
  QString qsValidChars;
};

KRestrictedLine::KRestrictedLine( QWidget *parent )
  : KLineEdit( parent )
  , d( new KRestrictedLinePrivate )
{
}

KRestrictedLine::~KRestrictedLine()
{
    delete d;
}


void KRestrictedLine::keyPressEvent( QKeyEvent *e )
{
  // let KLineEdit process "special" keys and return/enter
  // so that we still can use the default key binding
  if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return || e->key() == Qt::Key_Delete 
      || e->key() == Qt::Key_Backspace || (e->modifiers() & (Qt::ControlModifier | Qt::AltModifier 
      | Qt::MetaModifier | Qt::GroupSwitchModifier)))
    {
      KLineEdit::keyPressEvent(e);
      return;
    }

  // do we have a list of valid chars &&
  // is the pressed key in the list of valid chars?
  if (!d->qsValidChars.isEmpty() && !d->qsValidChars.contains(e->text()))
    {
      // invalid char, emit signal and return
      emit (invalidChar(e->key()));
      return;
    }
  else
	// valid char: let KLineEdit process this key as usual
	KLineEdit::keyPressEvent(e);

  return;
}


void KRestrictedLine::setValidChars( const QString& valid)
{
  d->qsValidChars = valid;
}

QString KRestrictedLine::validChars() const
{
  return d->qsValidChars;
}

#include "krestrictedline.moc"
