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/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the example classes of the Qt Toolkit.
**
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License versions 2.0 or 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 GNU General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
** exception, Nokia gives you certain additional rights. These rights
** are described in the Nokia Qt GPL Exception version 1.3, included in
** the file GPL_EXCEPTION.txt in this package.
**
** Qt for Windows(R) Licensees
** As a special exception, Nokia, as the sole copyright holder for Qt
** Designer, grants users of the Qt/Eclipse Integration plug-in the
** right for the Qt/Eclipse Integration to link to functionality
** provided by Qt Designer and its related libraries.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
****************************************************************************/
#include <QtGui>
#include <QtXmlPatterns>
#include "mainwindow.h"
#include "qobjectxmlmodel.h"
MainWindow::MainWindow()
{
setupUi(this);
/* Setup the font. */
{
QFont font("Courier");
font.setFixedPitch(true);
wholeTree->setFont(font);
wholeTreeOutput->setFont(font);
htmlQueryEdit->setFont(font);
}
/* We ensure the same name pool is used for our QXmlQuery
* and node model. */
QXmlNamePool namePool;
QObjectXmlModel qObjectModel(this, namePool);
QXmlQuery query(namePool);
/* The basic XML view. */
{
query.bindVariable("root", qObjectModel.root());
query.setQuery(QUrl("qrc:/queries/wholeTree.xq"));
Q_ASSERT(query.isValid());
QByteArray output;
QBuffer buffer(&output);
buffer.open(QIODevice::WriteOnly);
/* Let's the use the formatter, so it's a bit easier to read. */
QXmlFormatter serializer(query, &buffer);
query.evaluateTo(&serializer);
buffer.close();
{
QFile queryFile(":/queries/wholeTree.xq");
queryFile.open(QIODevice::ReadOnly);
wholeTree->setPlainText(QString::fromUtf8(queryFile.readAll()));
wholeTreeOutput->setPlainText(QString::fromUtf8(output.constData()));
}
}
/* The HTML view. */
{
query.setQuery(QUrl("qrc:/queries/statisticsInHTML.xq"));
Q_ASSERT(query.isValid());
QByteArray output;
QBuffer buffer(&output);
buffer.open(QIODevice::WriteOnly);
/* Let's the use the serializer, so we gain a bit of speed. */
QXmlSerializer serializer(query, &buffer);
query.evaluateTo(&serializer);
buffer.close();
{
QFile queryFile(":/queries/statisticsInHTML.xq");
queryFile.open(QIODevice::ReadOnly);
htmlQueryEdit->setPlainText(QString::fromUtf8(queryFile.readAll()));
htmlOutput->setHtml(QString(output));
}
}
}
void MainWindow::on_actionAbout_triggered()
{
QMessageBox::about(this, tr("About QObject XML Model"),
tr("<p>The <b>QObject XML Model</b> example shows "
"how to use XQuery on top of data of your choice without "
"converting it to an XML document.</p>"
"<p>In this example a QSimpleXmlNodeModel subclass makes it possible to "
"query a QObject tree using XQuery and retrieve the result as pointers to QObjects, or as XML.</p>"
"<p>A possible use case of this could be to write an application that tests a graphical interface "
"against Human Interface Guidelines, or that queries an application's data which is modeled using "
"a QObject tree and dynamic properties."));
}
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