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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@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>"));
}
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