examples/tools/regexp/regexpdialog.cpp

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  40
  41 #include <QtWidgets>
  42
  43 #include "regexpdialog.h"
  44
  45 RegExpDialog::RegExpDialog(QWidget *parent)
  46     : QDialog(parent)
  47 {
  48     patternComboBox = new QComboBox;
  49     patternComboBox->setEditable(true);
  50     patternComboBox->setSizePolicy(QSizePolicy::Expanding,
  51                                    QSizePolicy::Preferred);
  52
  53     patternLabel = new QLabel(tr("&Pattern:"));
  54     patternLabel->setBuddy(patternComboBox);
  55
  56     escapedPatternLineEdit = new QLineEdit;
  57     escapedPatternLineEdit->setReadOnly(true);
  58     QPalette palette = escapedPatternLineEdit->palette();
  59     palette.setBrush(QPalette::Base,
  60                      palette.brush(QPalette::Disabled, QPalette::Base));
  61     escapedPatternLineEdit->setPalette(palette);
  62
  63     escapedPatternLabel = new QLabel(tr("&Escaped Pattern:"));
  64     escapedPatternLabel->setBuddy(escapedPatternLineEdit);
  65
  66     syntaxComboBox = new QComboBox;
  67     syntaxComboBox->addItem(tr("Regular expression v1"), QRegExp::RegExp);
  68     syntaxComboBox->addItem(tr("Regular expression v2"), QRegExp::RegExp2);
  69     syntaxComboBox->addItem(tr("Wildcard"), QRegExp::Wildcard);
  70     syntaxComboBox->addItem(tr("Fixed string"), QRegExp::FixedString);
  71     syntaxComboBox->addItem(tr("W3C Xml Schema 1.1"), QRegExp::W3CXmlSchema11);
  72
  73     syntaxLabel = new QLabel(tr("&Pattern Syntax:"));
  74     syntaxLabel->setBuddy(syntaxComboBox);
  75
  76     textComboBox = new QComboBox;
  77     textComboBox->setEditable(true);
  78     textComboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
  79
  80     textLabel = new QLabel(tr("&Text:"));
  81     textLabel->setBuddy(textComboBox);
  82
  83     caseSensitiveCheckBox = new QCheckBox(tr("Case &Sensitive"));
  84     caseSensitiveCheckBox->setChecked(true);
  85     minimalCheckBox = new QCheckBox(tr("&Minimal"));
  86
  87     indexLabel = new QLabel(tr("Index of Match:"));
  88     indexEdit = new QLineEdit;
  89     indexEdit->setReadOnly(true);
  90
  91     matchedLengthLabel = new QLabel(tr("Matched Length:"));
  92     matchedLengthEdit = new QLineEdit;
  93     matchedLengthEdit->setReadOnly(true);
  94
  95     for (int i = 0; i < MaxCaptures; ++i) {
  96         captureLabels[i] = new QLabel(tr("Capture %1:").arg(i));
  97         captureEdits[i] = new QLineEdit;
  98         captureEdits[i]->setReadOnly(true);
  99     }
 100     captureLabels[0]->setText(tr("Match:"));
 101
 102     QHBoxLayout *checkBoxLayout = new QHBoxLayout;
 103     checkBoxLayout->addWidget(caseSensitiveCheckBox);
 104     checkBoxLayout->addWidget(minimalCheckBox);
 105     checkBoxLayout->addStretch(1);
 106
 107     QGridLayout *mainLayout = new QGridLayout;
 108     mainLayout->addWidget(patternLabel, 0, 0);
 109     mainLayout->addWidget(patternComboBox, 0, 1);
 110     mainLayout->addWidget(escapedPatternLabel, 1, 0);
 111     mainLayout->addWidget(escapedPatternLineEdit, 1, 1);
 112     mainLayout->addWidget(syntaxLabel, 2, 0);
 113     mainLayout->addWidget(syntaxComboBox, 2, 1);
 114     mainLayout->addLayout(checkBoxLayout, 3, 0, 1, 2);
 115     mainLayout->addWidget(textLabel, 4, 0);
 116     mainLayout->addWidget(textComboBox, 4, 1);
 117     mainLayout->addWidget(indexLabel, 5, 0);
 118     mainLayout->addWidget(indexEdit, 5, 1);
 119     mainLayout->addWidget(matchedLengthLabel, 6, 0);
 120     mainLayout->addWidget(matchedLengthEdit, 6, 1);
 121
 122     for (int j = 0; j < MaxCaptures; ++j) {
 123         mainLayout->addWidget(captureLabels[j], 7 + j, 0);
 124         mainLayout->addWidget(captureEdits[j], 7 + j, 1);
 125     }
 126     setLayout(mainLayout);
 127
 128     connect(patternComboBox, SIGNAL(editTextChanged(QString)),
 129             this, SLOT(refresh()));
 130     connect(textComboBox, SIGNAL(editTextChanged(QString)),
 131             this, SLOT(refresh()));
 132     connect(caseSensitiveCheckBox, SIGNAL(toggled(bool)),
 133             this, SLOT(refresh()));
 134     connect(minimalCheckBox, SIGNAL(toggled(bool)), this, SLOT(refresh()));
 135     connect(syntaxComboBox, SIGNAL(currentIndexChanged(int)),
 136             this, SLOT(refresh()));
 137
 138     patternComboBox->addItem(tr("[A-Za-z_]+([A-Za-z_0-9]*)"));
 139     textComboBox->addItem(tr("(10 + delta4) * 32"));
 140
 141     setWindowTitle(tr("RegExp"));
 142     setFixedHeight(sizeHint().height());
 143     refresh();
 144 }
 145
 146 void RegExpDialog::refresh()
 147 {
 148     setUpdatesEnabled(false);
 149
 150     QString pattern = patternComboBox->currentText();
 151     QString text = textComboBox->currentText();
 152
 153     QString escaped = pattern;
 154     escaped.replace("\\", "\\\\");
 155     escaped.replace("\"", "\\\"");
 156     escaped.prepend("\"");
 157     escaped.append("\"");
 158     escapedPatternLineEdit->setText(escaped);
 159
 160     QRegExp rx(pattern);
 161     Qt::CaseSensitivity cs = Qt::CaseInsensitive;
 162     if (caseSensitiveCheckBox->isChecked())
 163         cs = Qt::CaseSensitive;
 164     rx.setCaseSensitivity(cs);
 165     rx.setMinimal(minimalCheckBox->isChecked());
 166     QRegExp::PatternSyntax syntax = QRegExp::PatternSyntax(
 167             syntaxComboBox->itemData(syntaxComboBox->currentIndex()).toInt());
 168     rx.setPatternSyntax(syntax);
 169
 170     QPalette palette = patternComboBox->palette();
 171     if (rx.isValid()) {
 172         palette.setColor(QPalette::Text,
 173                          textComboBox->palette().color(QPalette::Text));
 174     } else {
 175         palette.setColor(QPalette::Text, Qt::red);
 176     }
 177     patternComboBox->setPalette(palette);
 178
 179     indexEdit->setText(QString::number(rx.indexIn(text)));
 180     matchedLengthEdit->setText(QString::number(rx.matchedLength()));
 181     for (int i = 0; i < MaxCaptures; ++i) {
 182         captureLabels[i]->setEnabled(i <= rx.captureCount());
 183         captureEdits[i]->setEnabled(i <= rx.captureCount());
 184         captureEdits[i]->setText(rx.cap(i));
 185     }
 186
 187     setUpdatesEnabled(true);
 188 }