2015-03-15 23:37:16 +00:00
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/****************************************************************************
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**
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2016-01-22 12:24:00 +00:00
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** Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
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** Copyright (C) 2016 Samuel Gaist <samuel.gaist@edeltech.ch>
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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2015-03-15 23:37:16 +00:00
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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2016-01-22 12:24:00 +00:00
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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2015-03-15 23:37:16 +00:00
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "regularexpressiondialog.h"
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#include <QApplication>
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#include <QCheckBox>
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#include <QComboBox>
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#include <QLabel>
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#include <QLineEdit>
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2017-05-15 10:44:30 +00:00
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#include <QMenu>
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2015-03-15 23:37:16 +00:00
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#include <QSpinBox>
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#include <QPlainTextEdit>
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#include <QTreeWidget>
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#include <QAction>
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#include <QClipboard>
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2017-05-15 10:44:30 +00:00
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#include <QContextMenuEvent>
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2015-03-15 23:37:16 +00:00
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#include <QHBoxLayout>
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#include <QGridLayout>
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#include <QFormLayout>
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#include <QRegularExpression>
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#include <QRegularExpressionMatch>
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#include <QRegularExpressionMatchIterator>
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Q_DECLARE_METATYPE(QRegularExpression::MatchType)
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2017-05-15 10:44:30 +00:00
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static QString patternToCode(QString pattern)
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{
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pattern.replace(QLatin1String("\\"), QLatin1String("\\\\"));
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pattern.replace(QLatin1String("\""), QLatin1String("\\\""));
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pattern.prepend(QLatin1Char('"'));
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pattern.append(QLatin1Char('"'));
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return pattern;
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}
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static QString codeToPattern(QString code)
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{
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for (int i = 0; i < code.size(); ++i) {
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if (code.at(i) == QLatin1Char('\\'))
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code.remove(i, 1);
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}
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if (code.startsWith(QLatin1Char('"')) && code.endsWith(QLatin1Char('"'))) {
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code.chop(1);
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code.remove(0, 1);
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}
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return code;
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}
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class PatternLineEdit : public QLineEdit
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{
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Q_OBJECT
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public:
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explicit PatternLineEdit(QWidget *parent = nullptr);
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private slots:
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void copyToCode();
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void pasteFromCode();
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void escapeSelection();
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protected:
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void contextMenuEvent(QContextMenuEvent *event) override;
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private:
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QAction *escapeSelectionAction;
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QAction *copyToCodeAction;
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QAction *pasteFromCodeAction;
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};
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PatternLineEdit::PatternLineEdit(QWidget *parent) :
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QLineEdit(parent),
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escapeSelectionAction(new QAction(tr("Escape Selection"), this)),
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copyToCodeAction(new QAction(tr("Copy to Code"), this)),
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pasteFromCodeAction(new QAction(tr("Paste from Code"), this))
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{
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setClearButtonEnabled(true);
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connect(escapeSelectionAction, &QAction::triggered, this, &PatternLineEdit::escapeSelection);
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connect(copyToCodeAction, &QAction::triggered, this, &PatternLineEdit::copyToCode);
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connect(pasteFromCodeAction, &QAction::triggered, this, &PatternLineEdit::pasteFromCode);
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2017-09-26 12:45:52 +00:00
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#if !QT_CONFIG(clipboard)
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copyToCodeAction->setEnabled(false);
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pasteFromCodeAction->setEnabled(false);
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#endif
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2017-05-15 10:44:30 +00:00
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}
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void PatternLineEdit::escapeSelection()
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{
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const QString selection = selectedText();
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const QString escapedSelection = QRegularExpression::escape(selection);
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if (escapedSelection != selection) {
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QString t = text();
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t.replace(selectionStart(), selection.size(), escapedSelection);
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setText(t);
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}
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}
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void PatternLineEdit::copyToCode()
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{
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2017-09-26 12:45:52 +00:00
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#if QT_CONFIG(clipboard)
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2017-05-15 10:44:30 +00:00
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QGuiApplication::clipboard()->setText(patternToCode(text()));
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2017-09-26 12:45:52 +00:00
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#endif
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2017-05-15 10:44:30 +00:00
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}
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void PatternLineEdit::pasteFromCode()
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{
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2017-09-26 12:45:52 +00:00
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#if QT_CONFIG(clipboard)
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2017-05-15 10:44:30 +00:00
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setText(codeToPattern(QGuiApplication::clipboard()->text()));
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2017-09-26 12:45:52 +00:00
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#endif
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2017-05-15 10:44:30 +00:00
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}
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void PatternLineEdit::contextMenuEvent(QContextMenuEvent *event)
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{
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QMenu *menu = createStandardContextMenu();
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menu->setAttribute(Qt::WA_DeleteOnClose);
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menu->addSeparator();
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escapeSelectionAction->setEnabled(hasSelectedText());
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menu->addAction(escapeSelectionAction);
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menu->addSeparator();
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menu->addAction(copyToCodeAction);
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menu->addAction(pasteFromCodeAction);
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menu->popup(event->globalPos());
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}
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2015-03-15 23:37:16 +00:00
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RegularExpressionDialog::RegularExpressionDialog(QWidget *parent)
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: QDialog(parent)
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{
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setupUi();
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setWindowTitle(tr("QRegularExpression Example"));
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connect(patternLineEdit, &QLineEdit::textChanged, this, &RegularExpressionDialog::refresh);
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connect(subjectTextEdit, &QPlainTextEdit::textChanged, this, &RegularExpressionDialog::refresh);
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connect(caseInsensitiveOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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connect(dotMatchesEverythingOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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connect(multilineOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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connect(extendedPatternSyntaxOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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connect(invertedGreedinessOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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connect(dontCaptureOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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connect(useUnicodePropertiesOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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connect(optimizeOnFirstUsageOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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connect(dontAutomaticallyOptimizeOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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2016-12-20 18:37:37 +00:00
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connect(offsetSpinBox, QOverload<int>::of(&QSpinBox::valueChanged),
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2015-03-15 23:37:16 +00:00
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this, &RegularExpressionDialog::refresh);
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2016-12-20 18:37:37 +00:00
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connect(matchTypeComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged),
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2015-03-15 23:37:16 +00:00
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this, &RegularExpressionDialog::refresh);
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connect(anchoredMatchOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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connect(dontCheckSubjectStringMatchOptionCheckBox, &QCheckBox::toggled, this, &RegularExpressionDialog::refresh);
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patternLineEdit->setText(tr("(\\+?\\d+)-(?<prefix>\\d+)-(?<number>\\w+)"));
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subjectTextEdit->setPlainText(tr("My office number is +43-152-0123456, my mobile is 001-41-255512 instead."));
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refresh();
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}
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2017-02-03 09:06:09 +00:00
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void RegularExpressionDialog::setResultUiEnabled(bool enabled)
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{
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matchDetailsTreeWidget->setEnabled(enabled);
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namedGroupsTreeWidget->setEnabled(enabled);
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}
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static void setTextColor(QWidget *widget, const QColor &color)
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{
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QPalette palette = widget->palette();
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palette.setColor(QPalette::Text, color);
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widget->setPalette(palette);
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}
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2015-03-15 23:37:16 +00:00
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void RegularExpressionDialog::refresh()
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{
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setUpdatesEnabled(false);
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const QString pattern = patternLineEdit->text();
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const QString text = subjectTextEdit->toPlainText();
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offsetSpinBox->setMaximum(qMax(0, text.length() - 1));
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2017-05-15 10:44:30 +00:00
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escapedPatternLineEdit->setText(patternToCode(pattern));
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2015-03-15 23:37:16 +00:00
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2017-02-03 09:06:09 +00:00
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setTextColor(patternLineEdit, subjectTextEdit->palette().color(QPalette::Text));
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matchDetailsTreeWidget->clear();
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namedGroupsTreeWidget->clear();
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regexpStatusLabel->setText(QString());
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if (pattern.isEmpty()) {
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setResultUiEnabled(false);
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setUpdatesEnabled(true);
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return;
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}
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2015-03-15 23:37:16 +00:00
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QRegularExpression rx(pattern);
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2017-02-03 09:06:09 +00:00
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if (!rx.isValid()) {
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setTextColor(patternLineEdit, Qt::red);
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regexpStatusLabel->setText(tr("Invalid: syntax error at position %1 (%2)")
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.arg(rx.patternErrorOffset())
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.arg(rx.errorString()));
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setResultUiEnabled(false);
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setUpdatesEnabled(true);
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return;
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}
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setResultUiEnabled(true);
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2015-03-15 23:37:16 +00:00
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QRegularExpression::MatchType matchType = matchTypeComboBox->currentData().value<QRegularExpression::MatchType>();
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QRegularExpression::PatternOptions patternOptions = QRegularExpression::NoPatternOption;
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QRegularExpression::MatchOptions matchOptions = QRegularExpression::NoMatchOption;
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if (anchoredMatchOptionCheckBox->isChecked())
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matchOptions |= QRegularExpression::AnchoredMatchOption;
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if (dontCheckSubjectStringMatchOptionCheckBox->isChecked())
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matchOptions |= QRegularExpression::DontCheckSubjectStringMatchOption;
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if (caseInsensitiveOptionCheckBox->isChecked())
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patternOptions |= QRegularExpression::CaseInsensitiveOption;
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if (dotMatchesEverythingOptionCheckBox->isChecked())
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patternOptions |= QRegularExpression::DotMatchesEverythingOption;
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if (multilineOptionCheckBox->isChecked())
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patternOptions |= QRegularExpression::MultilineOption;
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if (extendedPatternSyntaxOptionCheckBox->isChecked())
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patternOptions |= QRegularExpression::ExtendedPatternSyntaxOption;
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if (invertedGreedinessOptionCheckBox->isChecked())
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patternOptions |= QRegularExpression::InvertedGreedinessOption;
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if (dontCaptureOptionCheckBox->isChecked())
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patternOptions |= QRegularExpression::DontCaptureOption;
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if (useUnicodePropertiesOptionCheckBox->isChecked())
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patternOptions |= QRegularExpression::UseUnicodePropertiesOption;
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if (optimizeOnFirstUsageOptionCheckBox->isChecked())
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patternOptions |= QRegularExpression::OptimizeOnFirstUsageOption;
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if (dontAutomaticallyOptimizeOptionCheckBox->isChecked())
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patternOptions |= QRegularExpression::DontAutomaticallyOptimizeOption;
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rx.setPatternOptions(patternOptions);
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2017-02-03 09:06:09 +00:00
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const int capturingGroupsCount = rx.captureCount() + 1;
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2015-03-15 23:37:16 +00:00
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2017-02-03 09:06:09 +00:00
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QRegularExpressionMatchIterator iterator = rx.globalMatch(text, offsetSpinBox->value(), matchType, matchOptions);
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int i = 0;
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2015-03-15 23:37:16 +00:00
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2017-02-03 09:06:09 +00:00
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while (iterator.hasNext()) {
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QRegularExpressionMatch match = iterator.next();
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2015-03-15 23:37:16 +00:00
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2017-02-03 09:06:09 +00:00
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QTreeWidgetItem *matchDetailTopItem = new QTreeWidgetItem(matchDetailsTreeWidget);
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matchDetailTopItem->setText(0, QString::number(i));
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2015-03-15 23:37:16 +00:00
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2017-02-03 09:06:09 +00:00
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for (int captureGroupIndex = 0; captureGroupIndex < capturingGroupsCount; ++captureGroupIndex) {
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QTreeWidgetItem *matchDetailItem = new QTreeWidgetItem(matchDetailTopItem);
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matchDetailItem->setText(1, QString::number(captureGroupIndex));
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matchDetailItem->setText(2, match.captured(captureGroupIndex));
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2015-03-15 23:37:16 +00:00
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}
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2017-02-03 09:06:09 +00:00
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++i;
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2015-03-15 23:37:16 +00:00
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}
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matchDetailsTreeWidget->expandAll();
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2017-02-03 09:06:09 +00:00
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regexpStatusLabel->setText(tr("Valid"));
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2015-03-15 23:37:16 +00:00
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2017-02-03 09:06:09 +00:00
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const QStringList namedCaptureGroups = rx.namedCaptureGroups();
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for (int i = 0; i < namedCaptureGroups.size(); ++i) {
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const QString currentNamedCaptureGroup = namedCaptureGroups.at(i);
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2015-03-15 23:37:16 +00:00
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2017-02-03 09:06:09 +00:00
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QTreeWidgetItem *namedGroupItem = new QTreeWidgetItem(namedGroupsTreeWidget);
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namedGroupItem->setText(0, QString::number(i));
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namedGroupItem->setText(1, currentNamedCaptureGroup.isNull() ? tr("<no name>") : currentNamedCaptureGroup);
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2015-03-15 23:37:16 +00:00
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}
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2017-02-03 09:06:09 +00:00
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2015-03-15 23:37:16 +00:00
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setUpdatesEnabled(true);
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}
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void RegularExpressionDialog::copyEscapedPatternToClipboard()
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{
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2017-09-26 12:45:52 +00:00
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#if QT_CONFIG(clipboard)
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2015-03-15 23:37:16 +00:00
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QClipboard *clipboard = QGuiApplication::clipboard();
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if (clipboard)
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clipboard->setText(escapedPatternLineEdit->text());
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#endif
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}
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void RegularExpressionDialog::setupUi()
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{
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QWidget *leftHalfContainer = setupLeftUi();
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QFrame *verticalSeparator = new QFrame;
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verticalSeparator->setFrameStyle(QFrame::VLine | QFrame::Sunken);
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QWidget *rightHalfContainer = setupRightUi();
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QHBoxLayout *mainLayout = new QHBoxLayout;
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mainLayout->addWidget(leftHalfContainer);
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mainLayout->addWidget(verticalSeparator);
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mainLayout->addWidget(rightHalfContainer);
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setLayout(mainLayout);
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}
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QWidget *RegularExpressionDialog::setupLeftUi()
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{
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QWidget *container = new QWidget;
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QFormLayout *layout = new QFormLayout(container);
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layout->setFieldGrowthPolicy(QFormLayout::AllNonFixedFieldsGrow);
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layout->setMargin(0);
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QLabel *regexpAndSubjectLabel = new QLabel(tr("<h3>Regular expression and text input</h3>"));
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layout->addRow(regexpAndSubjectLabel);
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2017-05-15 10:44:30 +00:00
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patternLineEdit = new PatternLineEdit;
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2015-03-15 23:37:16 +00:00
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patternLineEdit->setClearButtonEnabled(true);
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layout->addRow(tr("&Pattern:"), patternLineEdit);
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escapedPatternLineEdit = new QLineEdit;
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escapedPatternLineEdit->setReadOnly(true);
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QPalette palette = escapedPatternLineEdit->palette();
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palette.setBrush(QPalette::Base, palette.brush(QPalette::Disabled, QPalette::Base));
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escapedPatternLineEdit->setPalette(palette);
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2017-09-26 12:45:52 +00:00
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#if QT_CONFIG(clipboard)
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2015-03-15 23:37:16 +00:00
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QAction *copyEscapedPatternAction = new QAction(this);
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copyEscapedPatternAction->setText(tr("Copy to clipboard"));
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copyEscapedPatternAction->setIcon(QIcon(QStringLiteral(":/images/copy.png")));
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connect(copyEscapedPatternAction, &QAction::triggered, this, &RegularExpressionDialog::copyEscapedPatternToClipboard);
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escapedPatternLineEdit->addAction(copyEscapedPatternAction, QLineEdit::TrailingPosition);
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#endif
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layout->addRow(tr("&Escaped pattern:"), escapedPatternLineEdit);
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subjectTextEdit = new QPlainTextEdit;
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layout->addRow(tr("&Subject text:"), subjectTextEdit);
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caseInsensitiveOptionCheckBox = new QCheckBox(tr("Case insensitive (/i)"));
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dotMatchesEverythingOptionCheckBox = new QCheckBox(tr("Dot matches everything (/s)"));
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multilineOptionCheckBox = new QCheckBox(tr("Multiline (/m)"));
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extendedPatternSyntaxOptionCheckBox = new QCheckBox(tr("Extended pattern (/x)"));
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invertedGreedinessOptionCheckBox = new QCheckBox(tr("Inverted greediness"));
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dontCaptureOptionCheckBox = new QCheckBox(tr("Don't capture"));
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useUnicodePropertiesOptionCheckBox = new QCheckBox(tr("Use unicode properties (/u)"));
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optimizeOnFirstUsageOptionCheckBox = new QCheckBox(tr("Optimize on first usage"));
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dontAutomaticallyOptimizeOptionCheckBox = new QCheckBox(tr("Don't automatically optimize"));
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QGridLayout *patternOptionsCheckBoxLayout = new QGridLayout;
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int gridRow = 0;
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patternOptionsCheckBoxLayout->addWidget(caseInsensitiveOptionCheckBox, gridRow, 1);
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patternOptionsCheckBoxLayout->addWidget(dotMatchesEverythingOptionCheckBox, gridRow, 2);
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++gridRow;
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patternOptionsCheckBoxLayout->addWidget(multilineOptionCheckBox, gridRow, 1);
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patternOptionsCheckBoxLayout->addWidget(extendedPatternSyntaxOptionCheckBox, gridRow, 2);
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++gridRow;
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patternOptionsCheckBoxLayout->addWidget(invertedGreedinessOptionCheckBox, gridRow, 1);
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patternOptionsCheckBoxLayout->addWidget(dontCaptureOptionCheckBox, gridRow, 2);
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++gridRow;
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patternOptionsCheckBoxLayout->addWidget(useUnicodePropertiesOptionCheckBox, gridRow, 1);
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patternOptionsCheckBoxLayout->addWidget(optimizeOnFirstUsageOptionCheckBox, gridRow, 2);
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++gridRow;
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patternOptionsCheckBoxLayout->addWidget(dontAutomaticallyOptimizeOptionCheckBox, gridRow, 1);
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layout->addRow(tr("Pattern options:"), patternOptionsCheckBoxLayout);
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offsetSpinBox = new QSpinBox;
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layout->addRow(tr("Match &offset:"), offsetSpinBox);
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matchTypeComboBox = new QComboBox;
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matchTypeComboBox->addItem(tr("Normal"), QVariant::fromValue(QRegularExpression::NormalMatch));
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matchTypeComboBox->addItem(tr("Partial prefer complete"), QVariant::fromValue(QRegularExpression::PartialPreferCompleteMatch));
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matchTypeComboBox->addItem(tr("Partial prefer first"), QVariant::fromValue(QRegularExpression::PartialPreferFirstMatch));
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matchTypeComboBox->addItem(tr("No match"), QVariant::fromValue(QRegularExpression::NoMatch));
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layout->addRow(tr("Match &type:"), matchTypeComboBox);
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dontCheckSubjectStringMatchOptionCheckBox = new QCheckBox(tr("Don't check subject string"));
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anchoredMatchOptionCheckBox = new QCheckBox(tr("Anchored match"));
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QGridLayout *matchOptionsCheckBoxLayout = new QGridLayout;
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matchOptionsCheckBoxLayout->addWidget(dontCheckSubjectStringMatchOptionCheckBox, 0, 0);
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matchOptionsCheckBoxLayout->addWidget(anchoredMatchOptionCheckBox, 0, 1);
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layout->addRow(tr("Match options:"), matchOptionsCheckBoxLayout);
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return container;
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}
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QWidget *RegularExpressionDialog::setupRightUi()
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{
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QWidget *container = new QWidget;
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QFormLayout *layout = new QFormLayout(container);
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layout->setFieldGrowthPolicy(QFormLayout::AllNonFixedFieldsGrow);
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layout->setMargin(0);
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QLabel *matchInfoLabel = new QLabel(tr("<h3>Match information</h3>"));
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layout->addRow(matchInfoLabel);
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matchDetailsTreeWidget = new QTreeWidget;
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matchDetailsTreeWidget->setHeaderLabels(QStringList() << tr("Match index") << tr("Group index") << tr("Captured string"));
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matchDetailsTreeWidget->setSizeAdjustPolicy(QTreeWidget::AdjustToContents);
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layout->addRow(tr("Match details:"), matchDetailsTreeWidget);
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QFrame *horizontalSeparator = new QFrame;
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horizontalSeparator->setFrameStyle(QFrame::HLine | QFrame::Sunken);
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layout->addRow(horizontalSeparator);
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QLabel *regexpInfoLabel = new QLabel(tr("<h3>Regular expression information</h3>"));
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layout->addRow(regexpInfoLabel);
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regexpStatusLabel = new QLabel(tr("Valid"));
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regexpStatusLabel->setWordWrap(true);
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layout->addRow(tr("Pattern status:"), regexpStatusLabel);
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namedGroupsTreeWidget = new QTreeWidget;
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namedGroupsTreeWidget->setHeaderLabels(QStringList() << tr("Index") << tr("Named group"));
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namedGroupsTreeWidget->setSizeAdjustPolicy(QTreeWidget::AdjustToContents);
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namedGroupsTreeWidget->setRootIsDecorated(false);
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layout->addRow(tr("Named groups:"), namedGroupsTreeWidget);
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return container;
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}
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2017-05-15 10:44:30 +00:00
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#include "regularexpressiondialog.moc"
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