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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
commite5fcad302d86d316390c6b0f62759a067313e8a9 (patch)
treec2afbf6f1066b6ce261f14341cf6d310e5595bc1 /examples/xmlpatterns/qobjectxmlmodel/mainwindow.cpp
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Long live Qt 4.5!
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@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."));
+}
+
+