/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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** No Commercial Usage
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** contained in the Technology Preview License Agreement accompanying
** this package.
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** GNU Lesser General Public License Usage
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** ensure the GNU Lesser General Public License version 2.1 requirements
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****************************************************************************/

//
//  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_DelegatingNamespaceResolver_H
#define Patternist_DelegatingNamespaceResolver_H

#include <QHash>

#include "qnamespaceresolver_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{

    /**
     * @short Contains a set of bindings, plus a pointer to another resolver
     * which is delegates requests to, in case it can't handle a lookup on its
     * own.
     *
     * @ingroup Patternist
     * @author Frans Englich <frans.englich@nokia.com>
     */
    class DelegatingNamespaceResolver : public NamespaceResolver
    {
    public:
        DelegatingNamespaceResolver(const NamespaceResolver::Ptr &ns);
        DelegatingNamespaceResolver(const NamespaceResolver::Ptr &ns,
                                    const Bindings &overrides);

        virtual void addBinding(const QXmlName nb);

        virtual QXmlName::NamespaceCode lookupNamespaceURI(const QXmlName::PrefixCode prefix) const;
        virtual Bindings bindings() const;

    private:
        const NamespaceResolver::Ptr    m_nsResolver;
        Bindings                        m_bindings;
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif