Add QRegularExpression based regexp tool

Currently only the QRegExp based regexp tool is available to help build
regular expression. This patch aims to add the equivalent that use the
new QRegularExpression class.

Change-Id: Ie5f711640b32a6d10ce44d2c7795062c1aacce3f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>

examples/widgets/doc/src/regularexpression.qdoc

@@ -0,0 +1,48 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: http://www.gnu.org/copyleft/fdl.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \example tools/regularexpression
+    \title QRegularExpression Example
+    \ingroup examples-widgets-tools
+
+    \brief The QRegularExpression example shows how regular expressions in Qt are
+    applied to text by providing an environment in which new regular expressions can be
+    created and tested on custom text strings.
+
+    The example makes usage of the QRegularExpression class, which has been
+    introduced in Qt 5.0. QRegularExpression implements Perl-compatible regular
+    expressions, supporting a number of advanced matching features, such as
+    case insensitive matching, multiline matching, Unicode properties selectors
+    and partial/incremental matching.
+
+    QRegularExpression is a big improvement over QRegExp in terms of features
+    and performance and should be used in all new code.
+
+    \image regularexpression-example.png
+*/
+

examples/widgets/tools/regularexpression/main.cpp

@@ -0,0 +1,51 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "regularexpressiondialog.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    RegularExpressionDialog dialog;
+    dialog.show();
+    return app.exec();
+}

examples/widgets/tools/regularexpression/regularexpression.pro

@@ -0,0 +1,11 @@
+QT += widgets
+
+HEADERS       = regularexpressiondialog.h
+SOURCES       = regularexpressiondialog.cpp \
+                main.cpp
+
+RESOURCES += regularexpression.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/tools/regularexpression
+INSTALLS += target

examples/widgets/tools/regularexpression/regularexpression.qrc

@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>images/copy.png</file>
+</qresource>
+</RCC>

examples/widgets/tools/regularexpression/regularexpressiondialog.cpp

@@ -0,0 +1,349 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
+** Copyright (C) 2015 Samuel Gaist <samuel.gaist@edeltech.ch>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "regularexpressiondialog.h"
+
+#include <QApplication>
+
+#include <QCheckBox>
+#include <QComboBox>
+#include <QLabel>
+#include <QLineEdit>
+#include <QSpinBox>
+#include <QPlainTextEdit>
+#include <QTreeWidget>
+
+#include <QAction>
+#include <QClipboard>
+
+#include <QHBoxLayout>
+#include <QGridLayout>
+#include <QFormLayout>
+
+#include <QRegularExpression>
+#include <QRegularExpressionMatch>
+#include <QRegularExpressionMatchIterator>
+
+Q_DECLARE_METATYPE(QRegularExpression::MatchType)
+
+RegularExpressionDialog::RegularExpressionDialog(QWidget *parent)
+    : QDialog(parent)
+{
+    setupUi();
+    setWindowTitle(tr("QRegularExpression Example"));
+
+    connect(patternLineEdit, &QLineEdit::textChanged, this, &RegularExpressionDialog::refresh);
+    connect(subjectTextEdit, &QPlainTextEdit::textChanged, this, &RegularExpressionDialog::refresh);
+
+    connect(caseInsensitiveOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+    connect(dotMatchesEverythingOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+    connect(multilineOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+    connect(extendedPatternSyntaxOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+    connect(invertedGreedinessOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+    connect(dontCaptureOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+    connect(useUnicodePropertiesOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+    connect(optimizeOnFirstUsageOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+    connect(dontAutomaticallyOptimizeOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+
+    connect(offsetSpinBox, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged),
+            this, &RegularExpressionDialog::refresh);
+
+    connect(matchTypeComboBox, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
+            this, &RegularExpressionDialog::refresh);
+
+    connect(anchoredMatchOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+    connect(dontCheckSubjectStringMatchOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
+
+    patternLineEdit->setText(tr("(\\+?\\d+)-(?<prefix>\\d+)-(?<number>\\w+)"));
+    subjectTextEdit->setPlainText(tr("My office number is +43-152-0123456, my mobile is 001-41-255512 instead."));
+
+    refresh();
+}
+
+void RegularExpressionDialog::refresh()
+{
+    setUpdatesEnabled(false);
+
+    const QString pattern = patternLineEdit->text();
+    const QString text = subjectTextEdit->toPlainText();
+
+    offsetSpinBox->setMaximum(qMax(0, text.length() - 1));
+
+    QString escaped = pattern;
+    escaped.replace(QLatin1String("\\"), QLatin1String("\\\\"));
+    escaped.replace(QLatin1String("\""), QLatin1String("\\\""));
+    escaped.prepend(QLatin1String("\""));
+    escaped.append(QLatin1String("\""));
+    escapedPatternLineEdit->setText(escaped);
+
+    QRegularExpression rx(pattern);
+    QRegularExpression::MatchType matchType = matchTypeComboBox->currentData().value<QRegularExpression::MatchType>();
+    QRegularExpression::PatternOptions patternOptions = QRegularExpression::NoPatternOption;
+    QRegularExpression::MatchOptions matchOptions = QRegularExpression::NoMatchOption;
+
+    if (anchoredMatchOptionCheckBox->isChecked())
+        matchOptions |= QRegularExpression::AnchoredMatchOption;
+    if (dontCheckSubjectStringMatchOptionCheckBox->isChecked())
+        matchOptions |= QRegularExpression::DontCheckSubjectStringMatchOption;
+
+    if (caseInsensitiveOptionCheckBox->isChecked())
+        patternOptions |= QRegularExpression::CaseInsensitiveOption;
+    if (dotMatchesEverythingOptionCheckBox->isChecked())
+        patternOptions |= QRegularExpression::DotMatchesEverythingOption;
+    if (multilineOptionCheckBox->isChecked())
+        patternOptions |= QRegularExpression::MultilineOption;
+    if (extendedPatternSyntaxOptionCheckBox->isChecked())
+        patternOptions |= QRegularExpression::ExtendedPatternSyntaxOption;
+    if (invertedGreedinessOptionCheckBox->isChecked())
+        patternOptions |= QRegularExpression::InvertedGreedinessOption;
+    if (dontCaptureOptionCheckBox->isChecked())
+        patternOptions |= QRegularExpression::DontCaptureOption;
+    if (useUnicodePropertiesOptionCheckBox->isChecked())
+        patternOptions |= QRegularExpression::UseUnicodePropertiesOption;
+    if (optimizeOnFirstUsageOptionCheckBox->isChecked())
+        patternOptions |= QRegularExpression::OptimizeOnFirstUsageOption;
+    if (dontAutomaticallyOptimizeOptionCheckBox->isChecked())
+        patternOptions |= QRegularExpression::DontAutomaticallyOptimizeOption;
+
+    rx.setPatternOptions(patternOptions);
+
+    QPalette palette = patternLineEdit->palette();
+    if (rx.isValid())
+        palette.setColor(QPalette::Text, subjectTextEdit->palette().color(QPalette::Text));
+    else
+        palette.setColor(QPalette::Text, Qt::red);
+    patternLineEdit->setPalette(palette);
+
+    matchDetailsTreeWidget->clear();
+    matchDetailsTreeWidget->setEnabled(rx.isValid());
+
+    if (rx.isValid()) {
+        const int capturingGroupsCount = rx.captureCount() + 1;
+
+        QRegularExpressionMatchIterator iterator = rx.globalMatch(text, offsetSpinBox->value(), matchType, matchOptions);
+        int i = 0;
+
+        while (iterator.hasNext()) {
+            QRegularExpressionMatch match = iterator.next();
+
+            QTreeWidgetItem *matchDetailTopItem = new QTreeWidgetItem(matchDetailsTreeWidget);
+            matchDetailTopItem->setText(0, QString::number(i));
+
+            for (int captureGroupIndex = 0; captureGroupIndex < capturingGroupsCount; ++captureGroupIndex) {
+                QTreeWidgetItem *matchDetailItem = new QTreeWidgetItem(matchDetailTopItem);
+                matchDetailItem->setText(1, QString::number(captureGroupIndex));
+                matchDetailItem->setText(2, match.captured(captureGroupIndex));
+            }
+
+            ++i;
+        }
+    }
+
+    matchDetailsTreeWidget->expandAll();
+
+    namedGroupsTreeWidget->clear();
+    namedGroupsTreeWidget->setEnabled(rx.isValid());
+
+    if (rx.isValid()) {
+        regexpStatusLabel->setText(tr("Valid"));
+
+        const QStringList namedCaptureGroups = rx.namedCaptureGroups();
+        for (int i = 0; i < namedCaptureGroups.size(); ++i) {
+            const QString currentNamedCaptureGroup = namedCaptureGroups.at(i);
+
+            QTreeWidgetItem *namedGroupItem = new QTreeWidgetItem(namedGroupsTreeWidget);
+            namedGroupItem->setText(0, QString::number(i));
+            namedGroupItem->setText(1, currentNamedCaptureGroup.isNull() ? tr("<no name>") : currentNamedCaptureGroup);
+        }
+    } else {
+        regexpStatusLabel->setText(tr("Invalid: syntax error at position %1 (%2)")
+                                   .arg(rx.patternErrorOffset())
+                                   .arg(rx.errorString()));
+    }
+
+    setUpdatesEnabled(true);
+}
+
+void RegularExpressionDialog::copyEscapedPatternToClipboard()
+{
+#ifndef QT_NO_CLIPBOARD
+    QClipboard *clipboard = QGuiApplication::clipboard();
+    if (clipboard)
+        clipboard->setText(escapedPatternLineEdit->text());
+#endif
+}
+
+void RegularExpressionDialog::setupUi()
+{
+    QWidget *leftHalfContainer = setupLeftUi();
+
+    QFrame *verticalSeparator = new QFrame;
+    verticalSeparator->setFrameStyle(QFrame::VLine | QFrame::Sunken);
+
+    QWidget *rightHalfContainer = setupRightUi();
+
+    QHBoxLayout *mainLayout = new QHBoxLayout;
+    mainLayout->addWidget(leftHalfContainer);
+    mainLayout->addWidget(verticalSeparator);
+    mainLayout->addWidget(rightHalfContainer);
+
+    setLayout(mainLayout);
+}
+
+QWidget *RegularExpressionDialog::setupLeftUi()
+{
+    QWidget *container = new QWidget;
+
+    QFormLayout *layout = new QFormLayout(container);
+    layout->setFieldGrowthPolicy(QFormLayout::AllNonFixedFieldsGrow);
+    layout->setMargin(0);
+
+    QLabel *regexpAndSubjectLabel = new QLabel(tr("<h3>Regular expression and text input</h3>"));
+    layout->addRow(regexpAndSubjectLabel);
+
+    patternLineEdit = new QLineEdit;
+    patternLineEdit->setClearButtonEnabled(true);
+    layout->addRow(tr("&Pattern:"), patternLineEdit);
+
+    escapedPatternLineEdit = new QLineEdit;
+    escapedPatternLineEdit->setReadOnly(true);
+    QPalette palette = escapedPatternLineEdit->palette();
+    palette.setBrush(QPalette::Base, palette.brush(QPalette::Disabled, QPalette::Base));
+    escapedPatternLineEdit->setPalette(palette);
+
+#ifndef QT_NO_CLIPBOARD
+    QAction *copyEscapedPatternAction = new QAction(this);
+    copyEscapedPatternAction->setText(tr("Copy to clipboard"));
+    copyEscapedPatternAction->setIcon(QIcon(QStringLiteral(":/images/copy.png")));
+    connect(copyEscapedPatternAction, &QAction::triggered, this, &RegularExpressionDialog::copyEscapedPatternToClipboard);
+    escapedPatternLineEdit->addAction(copyEscapedPatternAction, QLineEdit::TrailingPosition);
+#endif
+
+    layout->addRow(tr("&Escaped pattern:"), escapedPatternLineEdit);
+
+    subjectTextEdit = new QPlainTextEdit;
+    layout->addRow(tr("&Subject text:"), subjectTextEdit);
+
+    caseInsensitiveOptionCheckBox = new QCheckBox(tr("Case insensitive (/i)"));
+    dotMatchesEverythingOptionCheckBox = new QCheckBox(tr("Dot matches everything (/s)"));
+    multilineOptionCheckBox = new QCheckBox(tr("Multiline (/m)"));
+    extendedPatternSyntaxOptionCheckBox = new QCheckBox(tr("Extended pattern (/x)"));
+    invertedGreedinessOptionCheckBox = new QCheckBox(tr("Inverted greediness"));
+    dontCaptureOptionCheckBox = new QCheckBox(tr("Don't capture"));
+    useUnicodePropertiesOptionCheckBox = new QCheckBox(tr("Use unicode properties (/u)"));
+    optimizeOnFirstUsageOptionCheckBox = new QCheckBox(tr("Optimize on first usage"));
+    dontAutomaticallyOptimizeOptionCheckBox = new QCheckBox(tr("Don't automatically optimize"));
+
+    QGridLayout *patternOptionsCheckBoxLayout = new QGridLayout;
+    int gridRow = 0;
+    patternOptionsCheckBoxLayout->addWidget(caseInsensitiveOptionCheckBox, gridRow, 1);
+    patternOptionsCheckBoxLayout->addWidget(dotMatchesEverythingOptionCheckBox, gridRow, 2);
+    ++gridRow;
+    patternOptionsCheckBoxLayout->addWidget(multilineOptionCheckBox, gridRow, 1);
+    patternOptionsCheckBoxLayout->addWidget(extendedPatternSyntaxOptionCheckBox, gridRow, 2);
+    ++gridRow;
+    patternOptionsCheckBoxLayout->addWidget(invertedGreedinessOptionCheckBox, gridRow, 1);
+    patternOptionsCheckBoxLayout->addWidget(dontCaptureOptionCheckBox, gridRow, 2);
+    ++gridRow;
+    patternOptionsCheckBoxLayout->addWidget(useUnicodePropertiesOptionCheckBox, gridRow, 1);
+    patternOptionsCheckBoxLayout->addWidget(optimizeOnFirstUsageOptionCheckBox, gridRow, 2);
+    ++gridRow;
+    patternOptionsCheckBoxLayout->addWidget(dontAutomaticallyOptimizeOptionCheckBox, gridRow, 1);
+
+    layout->addRow(tr("Pattern options:"), patternOptionsCheckBoxLayout);
+
+    offsetSpinBox = new QSpinBox;
+    layout->addRow(tr("Match &offset:"), offsetSpinBox);
+
+    matchTypeComboBox = new QComboBox;
+    matchTypeComboBox->addItem(tr("Normal"), QVariant::fromValue(QRegularExpression::NormalMatch));
+    matchTypeComboBox->addItem(tr("Partial prefer complete"), QVariant::fromValue(QRegularExpression::PartialPreferCompleteMatch));
+    matchTypeComboBox->addItem(tr("Partial prefer first"), QVariant::fromValue(QRegularExpression::PartialPreferFirstMatch));
+    matchTypeComboBox->addItem(tr("No match"), QVariant::fromValue(QRegularExpression::NoMatch));
+    layout->addRow(tr("Match &type:"), matchTypeComboBox);
+
+    dontCheckSubjectStringMatchOptionCheckBox = new QCheckBox(tr("Don't check subject string"));
+    anchoredMatchOptionCheckBox = new QCheckBox(tr("Anchored match"));
+
+    QGridLayout *matchOptionsCheckBoxLayout = new QGridLayout;
+    matchOptionsCheckBoxLayout->addWidget(dontCheckSubjectStringMatchOptionCheckBox, 0, 0);
+    matchOptionsCheckBoxLayout->addWidget(anchoredMatchOptionCheckBox, 0, 1);
+    layout->addRow(tr("Match options:"), matchOptionsCheckBoxLayout);
+
+    return container;
+}
+
+QWidget *RegularExpressionDialog::setupRightUi()
+{
+    QWidget *container = new QWidget;
+
+    QFormLayout *layout = new QFormLayout(container);
+    layout->setFieldGrowthPolicy(QFormLayout::AllNonFixedFieldsGrow);
+    layout->setMargin(0);
+
+    QLabel *matchInfoLabel = new QLabel(tr("<h3>Match information</h3>"));
+    layout->addRow(matchInfoLabel);
+
+    matchDetailsTreeWidget = new QTreeWidget;
+    matchDetailsTreeWidget->setHeaderLabels(QStringList() << tr("Match index") << tr("Group index") << tr("Captured string"));
+    matchDetailsTreeWidget->setSizeAdjustPolicy(QTreeWidget::AdjustToContents);
+    layout->addRow(tr("Match details:"), matchDetailsTreeWidget);
+
+    QFrame *horizontalSeparator = new QFrame;
+    horizontalSeparator->setFrameStyle(QFrame::HLine | QFrame::Sunken);
+    layout->addRow(horizontalSeparator);
+
+    QLabel *regexpInfoLabel = new QLabel(tr("<h3>Regular expression information</h3>"));
+    layout->addRow(regexpInfoLabel);
+
+    regexpStatusLabel = new QLabel(tr("Valid"));
+    regexpStatusLabel->setWordWrap(true);
+    layout->addRow(tr("Pattern status:"), regexpStatusLabel);
+
+    namedGroupsTreeWidget = new QTreeWidget;
+    namedGroupsTreeWidget->setHeaderLabels(QStringList() << tr("Index") << tr("Named group"));
+    namedGroupsTreeWidget->setSizeAdjustPolicy(QTreeWidget::AdjustToContents);
+    namedGroupsTreeWidget->setRootIsDecorated(false);
+    layout->addRow(tr("Named groups:"), namedGroupsTreeWidget);
+
+    return container;
+}

examples/widgets/tools/regularexpression/regularexpressiondialog.h

@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
+** Copyright (C) 2015 Samuel Gaist <samuel.gaist@edeltech.ch>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef REGULAREXPRESSIONDIALOG_H
+#define REGULAREXPRESSIONDIALOG_H
+
+#include <QDialog>
+
+QT_BEGIN_NAMESPACE
+class QCheckBox;
+class QComboBox;
+class QLabel;
+class QLineEdit;
+class QSpinBox;
+class QPlainTextEdit;
+class QTreeWidget;
+QT_END_NAMESPACE
+
+class RegularExpressionDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    RegularExpressionDialog(QWidget *parent = 0);
+
+private:
+    void refresh();
+    void copyEscapedPatternToClipboard();
+    void setupUi();
+    QWidget *setupLeftUi();
+    QWidget *setupRightUi();
+
+    QLineEdit *patternLineEdit;
+    QLineEdit *escapedPatternLineEdit;
+
+    QPlainTextEdit *subjectTextEdit;
+
+    QCheckBox *caseInsensitiveOptionCheckBox;
+    QCheckBox *dotMatchesEverythingOptionCheckBox;
+    QCheckBox *multilineOptionCheckBox;
+    QCheckBox *extendedPatternSyntaxOptionCheckBox;
+    QCheckBox *invertedGreedinessOptionCheckBox;
+    QCheckBox *dontCaptureOptionCheckBox;
+    QCheckBox *useUnicodePropertiesOptionCheckBox;
+    QCheckBox *optimizeOnFirstUsageOptionCheckBox;
+    QCheckBox *dontAutomaticallyOptimizeOptionCheckBox;
+
+    QSpinBox *offsetSpinBox;
+
+    QComboBox *matchTypeComboBox;
+
+    QCheckBox *anchoredMatchOptionCheckBox;
+    QCheckBox *dontCheckSubjectStringMatchOptionCheckBox;
+
+    QTreeWidget *matchDetailsTreeWidget;
+
+    QLabel *regexpStatusLabel;
+    QTreeWidget *namedGroupsTreeWidget;
+};
+
+#endif

examples/widgets/tools/tools.pro

@@ -8,6 +8,7 @@ SUBDIRS       = \
                 plugandpaintplugins \
                 plugandpaint \
                 regexp \
+                regularexpression \
                 settingseditor \
                 styleplugin \
                 treemodelcompleter \