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| ** This file is part of the examples of the Qt Toolkit. |
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| |
| #include <QFileDialog> |
| #include <QMessageBox> |
| #include <QLibraryInfo> |
| #include <QtXmlPatterns> |
| |
| #include "mainwindow.h" |
| #include "xmlsyntaxhighlighter.h" |
| |
| //! [0] |
| MainWindow::MainWindow() : m_fileTree(m_namePool) |
| { |
| setupUi(this); |
| |
| new XmlSyntaxHighlighter(fileTree->document()); |
| |
| // Set up the font. |
| { |
| QFont font("Courier",10); |
| font.setFixedPitch(true); |
| |
| fileTree->setFont(font); |
| queryEdit->setFont(font); |
| output->setFont(font); |
| } |
| |
| const QString dir(QLibraryInfo::location(QLibraryInfo::ExamplesPath) + "/xmlpatterns/filetree"); |
| qDebug() << dir; |
| |
| if (QDir(dir).exists()) |
| loadDirectory(dir); |
| else |
| fileTree->setPlainText(tr("Use the Open menu entry to select a directory.")); |
| |
| const QStringList queries(QDir(":/queries/", "*.xq").entryList()); |
| int len = queries.count(); |
| |
| for (int i = 0; i < len; ++i) |
| queryBox->addItem(queries.at(i)); |
| |
| } |
| //! [0] |
| |
| //! [2] |
| void MainWindow::on_queryBox_currentIndexChanged(const QString ¤tText) |
| { |
| QFile queryFile(":/queries/" + currentText); |
| queryFile.open(QIODevice::ReadOnly); |
| |
| queryEdit->setPlainText(QString::fromLatin1(queryFile.readAll())); |
| evaluateResult(); |
| } |
| //! [2] |
| |
| //! [3] |
| void MainWindow::evaluateResult() |
| { |
| if (queryBox->currentText().isEmpty() || m_fileNode.isNull()) |
| return; |
| |
| QXmlQuery query(m_namePool); |
| query.bindVariable("fileTree", m_fileNode); |
| query.setQuery(QUrl("qrc:/queries/" + queryBox->currentText())); |
| |
| QByteArray formatterOutput; |
| QBuffer buffer(&formatterOutput); |
| buffer.open(QIODevice::WriteOnly); |
| |
| QXmlFormatter formatter(query, &buffer); |
| query.evaluateTo(&formatter); |
| |
| output->setText(QString::fromLatin1(formatterOutput.constData())); |
| } |
| //! [3] |
| |
| //! [1] |
| void MainWindow::on_actionOpenDirectory_triggered() |
| { |
| const QString directoryName = QFileDialog::getExistingDirectory(this); |
| if (!directoryName.isEmpty()) |
| loadDirectory(directoryName); |
| } |
| //! [1] |
| |
| //! [4] |
| //! [5] |
| void MainWindow::loadDirectory(const QString &directory) |
| { |
| Q_ASSERT(QDir(directory).exists()); |
| |
| m_fileNode = m_fileTree.nodeFor(directory); |
| //! [5] |
| |
| QXmlQuery query(m_namePool); |
| query.bindVariable("fileTree", m_fileNode); |
| query.setQuery(QUrl("qrc:/queries/wholeTree.xq")); |
| |
| QByteArray output; |
| QBuffer buffer(&output); |
| buffer.open(QIODevice::WriteOnly); |
| |
| QXmlFormatter formatter(query, &buffer); |
| query.evaluateTo(&formatter); |
| |
| treeInfo->setText(tr("Model of %1 output as XML.").arg(directory)); |
| fileTree->setText(QString::fromLatin1(output.constData())); |
| evaluateResult(); |
| //! [6] |
| } |
| //! [6] |
| //! [4] |
| |
| void MainWindow::on_actionAbout_triggered() |
| { |
| QMessageBox::about(this, tr("About File Tree"), |
| tr("<p>Select <b>File->Open Directory</b> and " |
| "choose a directory. The directory is then " |
| "loaded into the model, and the model is " |
| "displayed on the left as XML.</p>" |
| |
| "<p>From the query menu on the right, select " |
| "a query. The query is displayed and then run " |
| "on the model. The results are displayed below " |
| "the query.</p>")); |
| } |
| |
| |