File indexing completed on 2024-04-21 05:51:37 

0001 /*
0002  *  SPDX-FileCopyrightText: 2002-2003 Jesper K. Pedersen <blackie@kde.org>
0003  *
0004  *  SPDX-License-Identifier: LGPL-2.0-only
0005  **/
0006 
0007 #include "limitedcharlineedit.h"
0008 
0009 #include <QKeyEvent>
0010 #include <QValidator>
0011 #include <qregularexpression.h>
0012 
0013 /**
0014    @internal
0015    A Validator for the @ref LimitedCharLineEdit
0016 */
0017 class Validator : public QValidator
0018 {
0019 public:
0020     Validator(LimitedCharLineEdit::Mode mode, QWidget *parent)
0021         : QValidator(parent)
0022         , _mode(mode)
0023     {
0024         setObjectName(QStringLiteral("Validator"));
0025     }
0026 
0027     QValidator::State validate(QString &txt, int & /*pos*/) const override
0028     {
0029         if (_mode == LimitedCharLineEdit::NORMAL
0030             || (_mode == LimitedCharLineEdit::HEX && txt.indexOf(QRegularExpression(QStringLiteral("^[0-9A-Fa-f]*$"))) != -1)
0031             || (_mode == LimitedCharLineEdit::OCT && txt.indexOf(QRegularExpression(QStringLiteral("^[0-7]*$"))) != -1)) {
0032             return QValidator::Acceptable;
0033         } else {
0034             return QValidator::Invalid;
0035         }
0036     }
0037 
0038 private:
0039     LimitedCharLineEdit::Mode _mode;
0040 };
0041 
0042 void LimitedCharLineEdit::keyPressEvent(QKeyEvent *event)
0043 {
0044     QLineEdit::keyPressEvent(event);
0045     if (text().length() == _count && !event->text().isNull()) {
0046         focusNextPrevChild(true);
0047     }
0048 }
0049 
0050 LimitedCharLineEdit::LimitedCharLineEdit(Mode mode, QWidget *parent, const QString &name)
0051     : QLineEdit(parent)
0052 {
0053     setObjectName(name);
0054 
0055     if (mode == NORMAL) {
0056         _count = 1;
0057     } else if (mode == HEX) {
0058         _count = 4;
0059     } else {
0060         _count = 4;
0061     }
0062 
0063     setMaxLength(_count);
0064     setFixedSize(fontMetrics().boundingRect(QLatin1Char('A')).width() * 5 + 5, sizeHint().height());
0065 
0066     setValidator(new Validator(mode, this));
0067 }