mainwindow.cpp Example File
xmlpatterns/qobjectxmlmodel/mainwindow.cpp
#include <QtGui>
#include <QtXmlPatterns>
#include "mainwindow.h"
#include "qobjectxmlmodel.h"
#include "xmlsyntaxhighlighter.h"
MainWindow::MainWindow()
{
setupUi(this);
new XmlSyntaxHighlighter(wholeTreeOutput->document());
{
QFont font("Courier");
font.setFixedPitch(true);
wholeTree->setFont(font);
wholeTreeOutput->setFont(font);
htmlQueryEdit->setFont(font);
}
QXmlNamePool namePool;
QObjectXmlModel qObjectModel(this, namePool);
QXmlQuery query(namePool);
{
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);
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()));
}
}
{
query.setQuery(QUrl("qrc:/queries/statisticsInHTML.xq"));
Q_ASSERT(query.isValid());
QByteArray output;
QBuffer buffer(&output);
buffer.open(QIODevice::WriteOnly);
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."));
}