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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.

#ifndef Patternist_DocumentContentValidator_H
#define Patternist_DocumentContentValidator_H

#include "qdynamiccontext_p.h"
#include "qexpression_p.h"
#include "qabstractxmlreceiver.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    /**
     * @short Receives QAbstractXmlReceiver events and validates that they are correct,
     * before sending them on to a second QAbstractXmlReceiver.
     *
     * @ingroup Patternist_xdm
     * @author Frans Englich <frans.englich@nokia.com>
     * @todo Escape data
     */
    class DocumentContentValidator : public QAbstractXmlReceiver
    {
    public:
        /**
         * DocumentContentValidator does not own @p receiver.
         */
        DocumentContentValidator(QAbstractXmlReceiver *const receiver,
                                 const DynamicContext::Ptr &context,
                                 const Expression::ConstPtr &expr);

        virtual void namespaceBinding(const QXmlName &nb);
        virtual void characters(const QStringRef &value);
        virtual void comment(const QString &value);

        virtual void startElement(const QXmlName &name);

        virtual void endElement();

        virtual void attribute(const QXmlName &name,
                               const QStringRef &value);

        virtual void processingInstruction(const QXmlName &name,
                                           const QString &value);

        virtual void item(const Item &item);

        virtual void startDocument();
        virtual void endDocument();
        virtual void atomicValue(const QVariant &value);
        virtual void startOfSequence();
        virtual void endOfSequence();

    private:
        QAbstractXmlReceiver *const      m_receiver;
        const DynamicContext::Ptr       m_context;
        const Expression::ConstPtr      m_expr;
        xsInteger                       m_elementDepth;
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif