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/****************************************************************************
**
** Copyright (C) 2010 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.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include <QtXmlPatterns>
#include "querymainwindow.h"
#include "xmlsyntaxhighlighter.h"
//! [0]
QueryMainWindow::QueryMainWindow() : ui_defaultQueries(0)
{
setupUi(this);
new XmlSyntaxHighlighter(findChild<QTextEdit*>("inputTextEdit")->document());
new XmlSyntaxHighlighter(findChild<QTextEdit*>("outputTextEdit")->document());
ui_defaultQueries = findChild<QComboBox*>("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()));
findChild<QTextEdit*>("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();
findChild<QTextEdit*>("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();
findChild<QTextEdit*>("outputTextEdit")->setPlainText(QString::fromUtf8(outArray.constData()));
}
//! [2]
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