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    41 

    42 #include <QtGui>

    43 #include <QtXmlPatterns>

    44 

    45 #include "mainwindow.h"

    46 #include "qobjectxmlmodel.h"

    47 #include "xmlsyntaxhighlighter.h"

    48 

    49 MainWindow::MainWindow()

    50 {

    51     setupUi(this);

    52 

    53     new XmlSyntaxHighlighter(wholeTreeOutput->document());

    54 

    55     /* Setup the font. */

    56     {

    57         QFont font("Courier");

    58         font.setFixedPitch(true);

    59 

    60         wholeTree->setFont(font);

    61         wholeTreeOutput->setFont(font);

    62         htmlQueryEdit->setFont(font);

    63     }

    64 

    65     QXmlNamePool namePool;

    66     QObjectXmlModel qObjectModel(this, namePool);

    67     QXmlQuery query(namePool);

    68 

    69     /* The QObject tree as XML view. */

    70     {

    71         query.bindVariable("root", qObjectModel.root());

    72         query.setQuery(QUrl("qrc:/queries/wholeTree.xq"));

    73 

    74         Q_ASSERT(query.isValid());

    75         QByteArray output;

    76         QBuffer buffer(&output);

    77         buffer.open(QIODevice::WriteOnly);

    78 

    79         /* Let's the use the formatter, so it's a bit easier to read. */

    80         QXmlFormatter serializer(query, &buffer);

    81 

    82         query.evaluateTo(&serializer);

    83         buffer.close();

    84 

    85         {

    86             QFile queryFile(":/queries/wholeTree.xq");

    87             queryFile.open(QIODevice::ReadOnly);

    88             wholeTree->setPlainText(QString::fromUtf8(queryFile.readAll()));

    89             wholeTreeOutput->setPlainText(QString::fromUtf8(output.constData()));

    90         }

    91     }

    92 

    93     /* The QObject occurrence statistics as HTML view. */

    94     {

    95         query.setQuery(QUrl("qrc:/queries/statisticsInHTML.xq"));

    96         Q_ASSERT(query.isValid());

    97 

    98         QByteArray output;

    99         QBuffer buffer(&output);

   100         buffer.open(QIODevice::WriteOnly);

   101 

   102         /* Let's the use the serializer, so we gain a bit of speed. */

   103         QXmlSerializer serializer(query, &buffer);

   104 

   105         query.evaluateTo(&serializer);

   106         buffer.close();

   107 

   108         {

   109             QFile queryFile(":/queries/statisticsInHTML.xq");

   110             queryFile.open(QIODevice::ReadOnly);

   111             htmlQueryEdit->setPlainText(QString::fromUtf8(queryFile.readAll()));

   112             htmlOutput->setHtml(QString(output));

   113         }

   114     }

   115 }

   116 

   117 void MainWindow::on_actionAbout_triggered()

   118 {

   119     QMessageBox::about(this,

   120                        tr("About QObject XML Model"),

   121                        tr("<p>The <b>QObject XML Model</b> example shows "

   122                           "how to use XQuery on top of data of your choice "

   123                           "without converting it to an XML document.</p>"

   124                           "<p>In this example a QSimpleXmlNodeModel subclass "

   125                           "makes it possible to query a QObject tree using "

   126                           "XQuery and retrieve the result as pointers to "

   127                           "QObjects, or as XML.</p>"

   128                           "<p>A possible use case of this could be to write "

   129                           "an application that tests a graphical interface "

   130                           "against Human Interface Guidelines, or that "

   131                           "queries an application's data which is modeled "

   132                           "using a QObject tree and dynamic properties."));

   133 }

   134 

   135