regexpdialog.cpp Example File
tools/regexp/regexpdialog.cpp
/****************************************************************************
**
** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
**
** This file is part of the documentation of the Qt Toolkit.
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** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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#include <QtGui>
#include "regexpdialog.h"
RegExpDialog::RegExpDialog(QWidget *parent)
: QDialog(parent)
{
patternComboBox = new QComboBox;
patternComboBox->setEditable(true);
patternComboBox->setSizePolicy(QSizePolicy::Expanding,
QSizePolicy::Preferred);
patternLabel = new QLabel(tr("&Pattern:"));
patternLabel->setBuddy(patternComboBox);
escapedPatternLineEdit = new QLineEdit;
escapedPatternLineEdit->setReadOnly(true);
QPalette palette = escapedPatternLineEdit->palette();
palette.setBrush(QPalette::Base, palette.brush(QPalette::Disabled, QPalette::Base));
escapedPatternLineEdit->setPalette(palette);
escapedPatternLabel = new QLabel(tr("&Escaped Pattern:"));
escapedPatternLabel->setBuddy(escapedPatternLineEdit);
textComboBox = new QComboBox;
textComboBox->setEditable(true);
textComboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
textLabel = new QLabel(tr("&Text:"));
textLabel->setBuddy(textComboBox);
caseSensitiveCheckBox = new QCheckBox(tr("Case &Sensitive"));
caseSensitiveCheckBox->setChecked(true);
minimalCheckBox = new QCheckBox(tr("&Minimal"));
wildcardCheckBox = new QCheckBox(tr("&Wildcard"));
indexLabel = new QLabel(tr("Index of Match:"));
indexEdit = new QLineEdit;
indexEdit->setReadOnly(true);
matchedLengthLabel = new QLabel(tr("Matched Length:"));
matchedLengthEdit = new QLineEdit;
matchedLengthEdit->setReadOnly(true);
for (int i = 0; i < MaxCaptures; ++i) {
captureLabels[i] = new QLabel(tr("Capture %1:").arg(i));
captureEdits[i] = new QLineEdit;
captureEdits[i]->setReadOnly(true);
}
captureLabels[0]->setText(tr("Match:"));
QHBoxLayout *checkBoxLayout = new QHBoxLayout;
checkBoxLayout->addWidget(caseSensitiveCheckBox);
checkBoxLayout->addWidget(minimalCheckBox);
checkBoxLayout->addWidget(wildcardCheckBox);
checkBoxLayout->addStretch(1);
QGridLayout *mainLayout = new QGridLayout;
mainLayout->setSizeConstraint(QLayout::SetFixedSize);
mainLayout->addWidget(patternLabel, 0, 0);
mainLayout->addWidget(patternComboBox, 0, 1);
mainLayout->addWidget(escapedPatternLabel, 1, 0);
mainLayout->addWidget(escapedPatternLineEdit, 1, 1);
mainLayout->addWidget(textLabel, 2, 0);
mainLayout->addWidget(textComboBox, 2, 1);
mainLayout->addLayout(checkBoxLayout, 3, 0, 1, 2);
mainLayout->addWidget(indexLabel, 4, 0);
mainLayout->addWidget(indexEdit, 4, 1);
mainLayout->addWidget(matchedLengthLabel, 5, 0);
mainLayout->addWidget(matchedLengthEdit, 5, 1);
for (int j = 0; j < MaxCaptures; ++j) {
mainLayout->addWidget(captureLabels[j], 6 + j, 0);
mainLayout->addWidget(captureEdits[j], 6 + j, 1);
}
setLayout(mainLayout);
connect(patternComboBox, SIGNAL(editTextChanged(const QString &)),
this, SLOT(refresh()));
connect(textComboBox, SIGNAL(editTextChanged(const QString &)),
this, SLOT(refresh()));
connect(caseSensitiveCheckBox, SIGNAL(toggled(bool)),
this, SLOT(refresh()));
connect(minimalCheckBox, SIGNAL(toggled(bool)), this, SLOT(refresh()));
connect(wildcardCheckBox, SIGNAL(toggled(bool)), this, SLOT(refresh()));
patternComboBox->addItem(tr("([A-Za-z_])([A-Za-z_0-9]*)"));
textComboBox->addItem(tr("(10 + delta4) * 32"));
setWindowTitle(tr("RegExp"));
refresh();
}
void RegExpDialog::refresh()
{
QString pattern = patternComboBox->currentText();
QString text = textComboBox->currentText();
QString escaped = patternComboBox->currentText();
escaped.replace("\\", "\\\\");
escaped.replace("\"", "\\\"");
escaped = "\"" + escaped + "\"";
escapedPatternLineEdit->setText(escaped);
QRegExp rx(pattern);
Qt::CaseSensitivity cs = Qt::CaseInsensitive;
if (caseSensitiveCheckBox->isChecked())
cs = Qt::CaseSensitive;
rx.setCaseSensitivity(cs);
rx.setMinimal(minimalCheckBox->isChecked());
QRegExp::PatternSyntax syntax =
wildcardCheckBox->isChecked() ? QRegExp::Wildcard : QRegExp::RegExp;
rx.setPatternSyntax(syntax);
QPalette palette = patternComboBox->palette();
if (rx.isValid()) {
palette.setColor(QPalette::Text,
textComboBox->palette().color(QPalette::Text));
} else {
palette.setColor(QPalette::Text, Qt::red);
}
patternComboBox->setPalette(palette);
indexEdit->setText(QString::number(rx.indexIn(text)));
matchedLengthEdit->setText(QString::number(rx.matchedLength()));
for (int i = 0; i < MaxCaptures; ++i) {
captureLabels[i]->setEnabled(i <= rx.numCaptures());
captureEdits[i]->setEnabled(i <= rx.numCaptures());
captureEdits[i]->setText(rx.cap(i));
}
}