regexpdialog.cpp Example File

tools/regexp/regexpdialog.cpp
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#include <QtWidgets> #include "regexpdialog.h" RegExpDialog::RegExpDialog(QWidget *parent) : QDialog(parent) { patternComboBox = new QComboBox; patternComboBox->setEditable(true); patternComboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred); patternLabel = new QLabel(tr("&Pattern:")); patternLabel->setBuddy(patternComboBox); escapedPatternLineEdit = new QLineEdit; escapedPatternLineEdit->setReadOnly(true); QPalette palette = escapedPatternLineEdit->palette(); palette.setBrush(QPalette::Base, palette.brush(QPalette::Disabled, QPalette::Base)); escapedPatternLineEdit->setPalette(palette); escapedPatternLabel = new QLabel(tr("&Escaped Pattern:")); escapedPatternLabel->setBuddy(escapedPatternLineEdit); syntaxComboBox = new QComboBox; syntaxComboBox->addItem(tr("Regular expression v1"), QRegExp::RegExp); syntaxComboBox->addItem(tr("Regular expression v2"), QRegExp::RegExp2); syntaxComboBox->addItem(tr("Wildcard"), QRegExp::Wildcard); syntaxComboBox->addItem(tr("Fixed string"), QRegExp::FixedString); syntaxComboBox->addItem(tr("W3C Xml Schema 1.1"), QRegExp::W3CXmlSchema11); syntaxLabel = new QLabel(tr("&Pattern Syntax:")); syntaxLabel->setBuddy(syntaxComboBox); textComboBox = new QComboBox; textComboBox->setEditable(true); textComboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred); textLabel = new QLabel(tr("&Text:")); textLabel->setBuddy(textComboBox); caseSensitiveCheckBox = new QCheckBox(tr("Case &Sensitive")); caseSensitiveCheckBox->setChecked(true); minimalCheckBox = new QCheckBox(tr("&Minimal")); indexLabel = new QLabel(tr("Index of Match:")); indexEdit = new QLineEdit; indexEdit->setReadOnly(true); matchedLengthLabel = new QLabel(tr("Matched Length:")); matchedLengthEdit = new QLineEdit; matchedLengthEdit->setReadOnly(true); for (int i = 0; i < MaxCaptures; ++i) { captureLabels[i] = new QLabel(tr("Capture %1:").arg(i)); captureEdits[i] = new QLineEdit; captureEdits[i]->setReadOnly(true); } captureLabels[0]->setText(tr("Match:")); QHBoxLayout *checkBoxLayout = new QHBoxLayout; checkBoxLayout->addWidget(caseSensitiveCheckBox); checkBoxLayout->addWidget(minimalCheckBox); checkBoxLayout->addStretch(1); QGridLayout *mainLayout = new QGridLayout; mainLayout->addWidget(patternLabel, 0, 0); mainLayout->addWidget(patternComboBox, 0, 1); mainLayout->addWidget(escapedPatternLabel, 1, 0); mainLayout->addWidget(escapedPatternLineEdit, 1, 1); mainLayout->addWidget(syntaxLabel, 2, 0); mainLayout->addWidget(syntaxComboBox, 2, 1); mainLayout->addLayout(checkBoxLayout, 3, 0, 1, 2); mainLayout->addWidget(textLabel, 4, 0); mainLayout->addWidget(textComboBox, 4, 1); mainLayout->addWidget(indexLabel, 5, 0); mainLayout->addWidget(indexEdit, 5, 1); mainLayout->addWidget(matchedLengthLabel, 6, 0); mainLayout->addWidget(matchedLengthEdit, 6, 1); for (int j = 0; j < MaxCaptures; ++j) { mainLayout->addWidget(captureLabels[j], 7 + j, 0); mainLayout->addWidget(captureEdits[j], 7 + j, 1); } setLayout(mainLayout); connect(patternComboBox, SIGNAL(editTextChanged(QString)), this, SLOT(refresh())); connect(textComboBox, SIGNAL(editTextChanged(QString)), this, SLOT(refresh())); connect(caseSensitiveCheckBox, SIGNAL(toggled(bool)), this, SLOT(refresh())); connect(minimalCheckBox, SIGNAL(toggled(bool)), this, SLOT(refresh())); connect(syntaxComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(refresh())); patternComboBox->addItem(tr("[A-Za-z_]+([A-Za-z_0-9]*)")); textComboBox->addItem(tr("(10 + delta4) * 32")); setWindowTitle(tr("RegExp")); setFixedHeight(sizeHint().height()); refresh(); } void RegExpDialog::refresh() { setUpdatesEnabled(false); QString pattern = patternComboBox->currentText(); QString text = textComboBox->currentText(); QString escaped = pattern; escaped.replace("\\", "\\\\"); escaped.replace("\"", "\\\""); escaped.prepend('"'); escaped.append('"'); escapedPatternLineEdit->setText(escaped); QRegExp rx(pattern); Qt::CaseSensitivity cs = Qt::CaseInsensitive; if (caseSensitiveCheckBox->isChecked()) cs = Qt::CaseSensitive; rx.setCaseSensitivity(cs); rx.setMinimal(minimalCheckBox->isChecked()); QRegExp::PatternSyntax syntax = QRegExp::PatternSyntax( syntaxComboBox->itemData(syntaxComboBox->currentIndex()).toInt()); rx.setPatternSyntax(syntax); QPalette palette = patternComboBox->palette(); if (rx.isValid()) { palette.setColor(QPalette::Text, textComboBox->palette().color(QPalette::Text)); } else { palette.setColor(QPalette::Text, Qt::red); } patternComboBox->setPalette(palette); indexEdit->setText(QString::number(rx.indexIn(text))); matchedLengthEdit->setText(QString::number(rx.matchedLength())); for (int i = 0; i < MaxCaptures; ++i) { captureLabels[i]->setEnabled(i <= rx.captureCount()); captureEdits[i]->setEnabled(i <= rx.captureCount()); captureEdits[i]->setText(rx.cap(i)); } setUpdatesEnabled(true); }