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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 http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include <QtXmlPatterns>
#include "mainwindow.h"
#include "xmlsyntaxhighlighter.h"
//! [4]
class MessageHandler : public QAbstractMessageHandler
{
public:
MessageHandler()
: QAbstractMessageHandler(0)
{
}
QString statusMessage() const
{
return m_description;
}
int line() const
{
return m_sourceLocation.line();
}
int column() const
{
return m_sourceLocation.column();
}
protected:
virtual void handleMessage(QtMsgType type, const QString &description,
const QUrl &identifier, const QSourceLocation &sourceLocation)
{
Q_UNUSED(type);
Q_UNUSED(identifier);
m_messageType = type;
m_description = description;
m_sourceLocation = sourceLocation;
}
private:
QtMsgType m_messageType;
QString m_description;
QSourceLocation m_sourceLocation;
};
//! [4]
//! [0]
MainWindow::MainWindow()
{
setupUi(this);
new XmlSyntaxHighlighter(schemaView->document());
new XmlSyntaxHighlighter(instanceEdit->document());
schemaSelection->addItem(tr("Contact Schema"));
schemaSelection->addItem(tr("Recipe Schema"));
schemaSelection->addItem(tr("Order Schema"));
instanceSelection->addItem(tr("Valid Contact Instance"));
instanceSelection->addItem(tr("Invalid Contact Instance"));
connect(schemaSelection, SIGNAL(currentIndexChanged(int)), SLOT(schemaSelected(int)));
connect(instanceSelection, SIGNAL(currentIndexChanged(int)), SLOT(instanceSelected(int)));
connect(validateButton, SIGNAL(clicked()), SLOT(validate()));
connect(instanceEdit, SIGNAL(textChanged()), SLOT(textChanged()));
validationStatus->setAlignment(Qt::AlignCenter | Qt::AlignVCenter);
schemaSelected(0);
instanceSelected(0);
}
//! [0]
//! [1]
void MainWindow::schemaSelected(int index)
{
instanceSelection->clear();
if (index == 0) {
instanceSelection->addItem(tr("Valid Contact Instance"));
instanceSelection->addItem(tr("Invalid Contact Instance"));
} else if (index == 1) {
instanceSelection->addItem(tr("Valid Recipe Instance"));
instanceSelection->addItem(tr("Invalid Recipe Instance"));
} else if (index == 2) {
instanceSelection->addItem(tr("Valid Order Instance"));
instanceSelection->addItem(tr("Invalid Order Instance"));
}
textChanged();
QFile schemaFile(QString(":/schema_%1.xsd").arg(index));
schemaFile.open(QIODevice::ReadOnly);
const QString schemaText(QString::fromUtf8(schemaFile.readAll()));
schemaView->setPlainText(schemaText);
validate();
}
//! [1]
//! [2]
void MainWindow::instanceSelected(int index)
{
QFile instanceFile(QString(":/instance_%1.xml").arg((2*schemaSelection->currentIndex()) + index));
instanceFile.open(QIODevice::ReadOnly);
const QString instanceText(QString::fromUtf8(instanceFile.readAll()));
instanceEdit->setPlainText(instanceText);
validate();
}
//! [2]
//! [3]
void MainWindow::validate()
{
const QByteArray schemaData = schemaView->toPlainText().toUtf8();
const QByteArray instanceData = instanceEdit->toPlainText().toUtf8();
MessageHandler messageHandler;
QXmlSchema schema;
schema.setMessageHandler(&messageHandler);
schema.load(schemaData);
bool errorOccurred = false;
if (!schema.isValid()) {
errorOccurred = true;
} else {
QXmlSchemaValidator validator(schema);
if (!validator.validate(instanceData))
errorOccurred = true;
}
if (errorOccurred) {
validationStatus->setText(messageHandler.statusMessage());
moveCursor(messageHandler.line(), messageHandler.column());
} else {
validationStatus->setText(tr("validation successful"));
}
const QString styleSheet = QString("QLabel {background: %1; padding: 3px}")
.arg(errorOccurred ? QColor(Qt::red).lighter(160).name() :
QColor(Qt::green).lighter(160).name());
validationStatus->setStyleSheet(styleSheet);
}
//! [3]
void MainWindow::textChanged()
{
instanceEdit->setExtraSelections(QList<QTextEdit::ExtraSelection>());
}
void MainWindow::moveCursor(int line, int column)
{
instanceEdit->moveCursor(QTextCursor::Start);
for (int i = 1; i < line; ++i)
instanceEdit->moveCursor(QTextCursor::Down);
for (int i = 1; i < column; ++i)
instanceEdit->moveCursor(QTextCursor::Right);
QList<QTextEdit::ExtraSelection> extraSelections;
QTextEdit::ExtraSelection selection;
const QColor lineColor = QColor(Qt::red).lighter(160);
selection.format.setBackground(lineColor);
selection.format.setProperty(QTextFormat::FullWidthSelection, true);
selection.cursor = instanceEdit->textCursor();
selection.cursor.clearSelection();
extraSelections.append(selection);
instanceEdit->setExtraSelections(extraSelections);
instanceEdit->setFocus();
}
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