regexpdialog.cpp Example File
tools/regexp/regexpdialog.cpp
#include "regexpdialog.h"
RegExpDialog::RegExpDialog(QWidget *parent)
: QDialog(parent)
{
patternComboBox = new QComboBox(this);
patternComboBox->setEditable(true);
patternComboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
patternComboBox->insertItem(tr("([A-Za-z_])([A-Za-z_0-9]*)"));
patternLabel = new QLabel(tr("&Pattern:"), this);
patternLabel->setBuddy(patternComboBox);
textComboBox = new QComboBox(this);
textComboBox->setEditable(true);
textComboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
textComboBox->insertItem(tr("(10 + delta4) * 32"));
textLabel = new QLabel(tr("&Text:"), this);
textLabel->setBuddy(textComboBox);
caseSensitiveCheckBox = new QCheckBox(tr("Case &Sensitive"), this);
caseSensitiveCheckBox->setChecked(true);
minimalCheckBox = new QCheckBox(tr("&Minimal"), this);
wildcardCheckBox = new QCheckBox(tr("&Wildcard"), this);
indexLabel = new QLabel(tr("Index of Match:"), this);
indexEdit = new QLineEdit(this);
indexEdit->setReadOnly(true);
matchedLengthLabel = new QLabel(tr("Matched Length:"), this);
matchedLengthEdit = new QLineEdit(this);
matchedLengthEdit->setReadOnly(true);
for (int i = 0; i < MaxCaptures; ++i) {
captureLabels[i] = new QLabel(tr("Capture %1:").arg(i), this);
captureEdits[i] = new QLineEdit(this);
captureEdits[i]->setReadOnly(true);
}
captureLabels[0]->setText(tr("Match:"));
copyButton = new QPushButton(tr("&Copy"), this);
quitButton = new QPushButton(tr("&Quit"), this);
QGridLayout *gridLayout = new QGridLayout;
gridLayout->addWidget(patternLabel, 0, 0);
gridLayout->addWidget(patternComboBox, 0, 1);
gridLayout->addWidget(textLabel, 1, 0);
gridLayout->addWidget(textComboBox, 1, 1);
QHBoxLayout *checkboxLayout = new QHBoxLayout;
checkboxLayout->addWidget(caseSensitiveCheckBox);
checkboxLayout->addWidget(minimalCheckBox);
checkboxLayout->addWidget(wildcardCheckBox);
checkboxLayout->addStretch(1);
QHBoxLayout *buttonLayout = new QHBoxLayout;
buttonLayout->addStretch(1);
buttonLayout->addWidget(copyButton);
buttonLayout->addWidget(quitButton);
QGridLayout *middleLayout = new QGridLayout;
middleLayout->addWidget(indexLabel, 0, 0);
middleLayout->addWidget(indexEdit, 0, 1);
middleLayout->addWidget(matchedLengthLabel, 1, 0);
middleLayout->addWidget(matchedLengthEdit, 1, 1);
for (int j = 0; j < MaxCaptures; ++j) {
middleLayout->addWidget(captureLabels[j], j + 2, 0);
middleLayout->addWidget(captureEdits[j], j + 2, 1);
}
QVBoxLayout *mainLayout = new QVBoxLayout(this);
mainLayout->addLayout(gridLayout);
mainLayout->addLayout(checkboxLayout);
mainLayout->addLayout(middleLayout);
mainLayout->addLayout(buttonLayout);
connect(patternComboBox, SIGNAL(textChanged(QString)), this, SLOT(refresh()));
connect(textComboBox, SIGNAL(textChanged(QString)), this, SLOT(refresh()));
connect(caseSensitiveCheckBox, SIGNAL(toggled(bool)), this, SLOT(refresh()));
connect(minimalCheckBox, SIGNAL(toggled(bool)), this, SLOT(refresh()));
connect(wildcardCheckBox, SIGNAL(toggled(bool)), this, SLOT(refresh()));
connect(copyButton, SIGNAL(clicked()), this, SLOT(copy()));
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
setWindowTitle(tr("RegExp"));
refresh();
}
void RegExpDialog::refresh()
{
QString pattern = patternComboBox->currentText();
QString text = textComboBox->currentText();
QRegExp rx(pattern);
Qt::CaseSensitivity cs = Qt::CaseInsensitive;
if (caseSensitiveCheckBox->isChecked())
cs = Qt::CaseSensitive;
rx.setCaseSensitivity(cs);
rx.setMinimal(minimalCheckBox->isChecked());
QRegExp::PatternSyntax syntax =
wildcardCheckBox->isChecked() ? QRegExp::Wildcard : QRegExp::RegExp;
rx.setPatternSyntax(syntax);
QPalette pal = patternComboBox->palette();
if (rx.isValid())
pal.setColor(QPalette::Text, palette().color(QPalette::Text));
else
pal.setColor(QPalette::Text, Qt::red);
patternComboBox->setPalette(pal);
indexEdit->setText(QString::number(rx.indexIn(text)));
matchedLengthEdit->setText(QString::number(rx.matchedLength()));
for (int i = 0; i < MaxCaptures; ++i) {
captureLabels[i]->setEnabled(i <= rx.numCaptures());
captureEdits[i]->setEnabled(i <= rx.numCaptures());
captureEdits[i]->setText(rx.cap(i));
}
}
void RegExpDialog::copy()
{
QString escaped = patternComboBox->currentText();
escaped = escaped.replace("\\", "\\\\");
escaped = "\"" + escaped + "\"";
QClipboard *cb = QApplication::clipboard();
cb->setText(escaped, QClipboard::Clipboard);
if (cb->supportsSelection())
cb->setText(escaped, QClipboard::Selection);
}