mainwindow.cpp Example File | Qt 4.8 (original) (raw)

xmlpatterns/qobjectxmlmodel/mainwindow.cpp

#include #include

#include "mainwindow.h" #include "qobjectxmlmodel.h" #include "xmlsyntaxhighlighter.h"

MainWindow::MainWindow() { setupUi(this);

new XmlSyntaxHighlighter(wholeTreeOutput->document());


{
    [QFont](qfont.html) font("Courier");
    font.setFixedPitch(true);

    wholeTree->setFont(font);
    wholeTreeOutput->setFont(font);
    htmlQueryEdit->setFont(font);
}

[QXmlNamePool](qxmlnamepool.html) namePool;
QObjectXmlModel qObjectModel(this, namePool);
[QXmlQuery](qxmlquery.html) query(namePool);


{
    query.bindVariable("root", qObjectModel.root());
    query.setQuery([QUrl](qurl.html)("qrc:/queries/wholeTree.xq"));

    Q_ASSERT(query.isValid());
    [QByteArray](qbytearray.html) output;
    [QBuffer](qbuffer.html) buffer(&output);
    buffer.open([QIODevice](qiodevice.html)::WriteOnly);

    
    [QXmlFormatter](qxmlformatter.html) serializer(query, &buffer);

    query.evaluateTo(&serializer);
    buffer.close();

    {
        [QFile](qfile.html) queryFile(":/queries/wholeTree.xq");
        queryFile.open([QIODevice](qiodevice.html)::ReadOnly);
        wholeTree->setPlainText([QString](qstring.html)::fromUtf8(queryFile.readAll()));
        wholeTreeOutput->setPlainText([QString](qstring.html)::fromUtf8(output.constData()));
    }
}


{
    query.setQuery([QUrl](qurl.html)("qrc:/queries/statisticsInHTML.xq"));
    Q_ASSERT(query.isValid());

    [QByteArray](qbytearray.html) output;
    [QBuffer](qbuffer.html) buffer(&output);
    buffer.open([QIODevice](qiodevice.html)::WriteOnly);

    
    [QXmlSerializer](qxmlserializer.html) serializer(query, &buffer);

    query.evaluateTo(&serializer);
    buffer.close();

    {
        [QFile](qfile.html) queryFile(":/queries/statisticsInHTML.xq");
        queryFile.open([QIODevice](qiodevice.html)::ReadOnly);
        htmlQueryEdit->setPlainText([QString](qstring.html)::fromUtf8(queryFile.readAll()));
        htmlOutput->setHtml([QString](qstring.html)(output));
    }
}

}

void MainWindow::on_actionAbout_triggered() { QMessageBox::about(this, tr("About QObject XML Model"), tr("

The QObject XML Model example shows " "how to use XQuery on top of data of your choice " "without converting it to an XML document.

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.

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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