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Diffstat (limited to 'examples/xmlpatterns/filetree/mainwindow.cpp')
| -rw-r--r-- | examples/xmlpatterns/filetree/mainwindow.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/examples/xmlpatterns/filetree/mainwindow.cpp b/examples/xmlpatterns/filetree/mainwindow.cpp new file mode 100644 index 0000000..341128a --- /dev/null +++ b/examples/xmlpatterns/filetree/mainwindow.cpp @@ -0,0 +1,166 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> +#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() +{ + QFile queryFile(":/queries/" + queryBox->currentText()); + queryFile.open(QIODevice::ReadOnly); + + queryEdit->setPlainText(QString::fromLatin1(queryFile.readAll())); + evaluateResult(); +} +//! [2] + +//! [3] +void MainWindow::evaluateResult() +{ + if (queryBox->currentText().isEmpty()) + 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((QString(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>")); +} + + |