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krestrictedline.cpp

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00001 /*
00002  *
00003  *
00004  * Implementation of KRestrictedLine
00005  *
00006  * Copyright (C) 1997 Michael Wiedmann, <mw@miwie.in-berlin.de>
00007  *
00008  * This library is free software; you can redistribute it and/or
00009  * modify it under the terms of the GNU Library General Public
00010  * License as published by the Free Software Foundation; either
00011  * version 2 of the License, or (at your option) any later version.
00012  *
00013  * This library is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016  * Library General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Library General Public
00019  * License along with this library; if not, write to the Free
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
00021  *
00022  */
00023 
00024 #include "krestrictedline.h"
00025 
00026 #include <QtCore/QCOORD>
00027 #include <QtGui/QKeyEvent>
00028 
00029 class KRestrictedLinePrivate
00030 {
00031 public:
00033   QString qsValidChars;
00034 };
00035 
00036 KRestrictedLine::KRestrictedLine( QWidget *parent )
00037   : KLineEdit( parent )
00038   , d( new KRestrictedLinePrivate )
00039 {
00040 }
00041 
00042 KRestrictedLine::~KRestrictedLine()
00043 {
00044     delete d;
00045 }
00046 
00047 
00048 void KRestrictedLine::keyPressEvent( QKeyEvent *e )
00049 {
00050   // let KLineEdit process "special" keys and return/enter
00051   // so that we still can use the default key binding
00052   if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return || e->key() == Qt::Key_Delete || e->text().length() < 32)
00053     {
00054       KLineEdit::keyPressEvent(e);
00055       return;
00056     }
00057 
00058   // do we have a list of valid chars &&
00059   // is the pressed key in the list of valid chars?
00060   if (!d->qsValidChars.isEmpty() && !d->qsValidChars.contains(e->text()))
00061     {
00062       // invalid char, emit signal and return
00063       emit (invalidChar(e->key()));
00064       return;
00065     }
00066   else
00067     // valid char: let KLineEdit process this key as usual
00068     KLineEdit::keyPressEvent(e);
00069 
00070   return;
00071 }
00072 
00073 
00074 void KRestrictedLine::setValidChars( const QString& valid)
00075 {
00076   d->qsValidChars = valid;
00077 }
00078 
00079 QString KRestrictedLine::validChars() const
00080 {
00081   return d->qsValidChars;
00082 }
00083 
00084 #include "krestrictedline.moc"

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