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/****************************************************************************
**
** 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 "querymainwindow.h"
#include "xmlsyntaxhighlighter.h"
//! [0]
QueryMainWindow::QueryMainWindow() : ui_defaultQueries(0)
{
setupUi(this);
new XmlSyntaxHighlighter(qFindChild<QTextEdit*>(this, "inputTextEdit")->document());
new XmlSyntaxHighlighter(qFindChild<QTextEdit*>(this, "outputTextEdit")->document());
ui_defaultQueries = qFindChild<QComboBox*>(this, "defaultQueries");
QMetaObject::connectSlotsByName(this);
connect(ui_defaultQueries, SIGNAL(currentIndexChanged(int)), SLOT(displayQuery(int)));
loadInputFile();
const QStringList queries(QDir(":/files/", "*.xq").entryList());
int len = queries.count();
for(int i = 0; i < len; ++i)
ui_defaultQueries->addItem(queries.at(i));
}
//! [0]
//! [1]
void QueryMainWindow::displayQuery(int index)
{
QFile queryFile(QString(":files/") + ui_defaultQueries->itemText(index));
queryFile.open(QIODevice::ReadOnly);
const QString query(QString::fromLatin1(queryFile.readAll()));
qFindChild<QTextEdit*>(this, "queryTextEdit")->setPlainText(query);
evaluate(query);
}
//! [1]
void QueryMainWindow::loadInputFile()
{
QFile forView;
forView.setFileName(":/files/cookbook.xml");
if (!forView.open(QIODevice::ReadOnly)) {
QMessageBox::information(this,
tr("Unable to open file"), forView.errorString());
return;
}
QTextStream in(&forView);
QString inputDocument = in.readAll();
qFindChild<QTextEdit*>(this, "inputTextEdit")->setPlainText(inputDocument);
}
//! [2]
void QueryMainWindow::evaluate(const QString &str)
{
QFile sourceDocument;
sourceDocument.setFileName(":/files/cookbook.xml");
sourceDocument.open(QIODevice::ReadOnly);
QByteArray outArray;
QBuffer buffer(&outArray);
buffer.open(QIODevice::ReadWrite);
QXmlQuery query;
query.bindVariable("inputDocument", &sourceDocument);
query.setQuery(str);
if (!query.isValid())
return;
QXmlFormatter formatter(query, &buffer);
if (!query.evaluateTo(&formatter))
return;
buffer.close();
qFindChild<QTextEdit*>(this, "outputTextEdit")->setPlainText(QString::fromUtf8(outArray.constData()));
}
//! [2]
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