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>

7 files changed, 517 insertions, 0 deletions

diff --git a/examples/widgets/tools/regularexpression/images/copy.png b/examples/widgets/tools/regularexpression/images/copy.png
new file mode 100644
index 0000000000..2aeb28288f
--- /dev/null
+++ b/examples/widgets/tools/regularexpression/images/copy.png
diff --git a/examples/widgets/tools/regularexpression/main.cpp b/examples/widgets/tools/regularexpression/main.cpp
new file mode 100644
index 0000000000..a5ef410688
--- /dev/null
+++ b/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();
+}
diff --git a/examples/widgets/tools/regularexpression/regularexpression.pro b/examples/widgets/tools/regularexpression/regularexpression.pro
new file mode 100644
index 0000000000..8e72e171b8
--- /dev/null
+++ b/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
diff --git a/examples/widgets/tools/regularexpression/regularexpression.qrc b/examples/widgets/tools/regularexpression/regularexpression.qrc
new file mode 100644
index 0000000000..ce7e104af3
--- /dev/null
+++ b/examples/widgets/tools/regularexpression/regularexpression.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>images/copy.png</file>
+</qresource>
+</RCC>
diff --git a/examples/widgets/tools/regularexpression/regularexpressiondialog.cpp b/examples/widgets/tools/regularexpression/regularexpressiondialog.cpp
new file mode 100644
index 0000000000..d40b4b325d
--- /dev/null
+++ b/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;
+}
diff --git a/examples/widgets/tools/regularexpression/regularexpressiondialog.h b/examples/widgets/tools/regularexpression/regularexpressiondialog.h
new file mode 100644
index 0000000000..1b3b147c14
--- /dev/null
+++ b/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
diff --git a/examples/widgets/tools/tools.pro b/examples/widgets/tools/tools.pro
index 7178411110..282f8dedea 100644
--- a/examples/widgets/tools/tools.pro
+++ b/examples/widgets/tools/tools.pro
@@ -8,6 +8,7 @@ SUBDIRS       = \
                 plugandpaintplugins \
                 plugandpaint \
                 regexp \
+                regularexpression \
                 settingseditor \
                 styleplugin \
                 treemodelcompleter \