examples/xmlpatterns/qobjectxmlmodel/mainwindow.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/xmlpatterns/qobjectxmlmodel/mainwindow.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,135 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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 <QtXmlPatterns>
+
+#include "mainwindow.h"
+#include "qobjectxmlmodel.h"
+#include "xmlsyntaxhighlighter.h"
+
+MainWindow::MainWindow()
+{
+    setupUi(this);
+
+    new XmlSyntaxHighlighter(wholeTreeOutput->document());
+
+    /* Setup the font. */
+    {
+        QFont font("Courier");
+        font.setFixedPitch(true);
+
+        wholeTree->setFont(font);
+        wholeTreeOutput->setFont(font);
+        htmlQueryEdit->setFont(font);
+    }
+
+    QXmlNamePool namePool;
+    QObjectXmlModel qObjectModel(this, namePool);
+    QXmlQuery query(namePool);
+
+    /* The QObject tree as 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 QObject occurrence statistics as 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."));
+}
+
+