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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://www.qtsoftware.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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