/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** 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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** contained in the Technology Preview License Agreement accompanying
** this package.
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** GNU Lesser General Public License Usage
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
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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 QNETWORKACCESSDELEGATOR_P_H
#define QNETWORKACCESSDELEGATOR_P_H

#include <QObject>
#include <QPointer>
#include <QSharedData>

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

class QNetworkAccessManager;
class QUrl;

namespace QPatternist
{
    /**
     * @short A value based class that hands out QNetworkAccessManager
     * appropriately for variable bindings.
     *
     * NetworkAccessDelegator is an indirection mechanism which takes care of
     * the fact that QIODevice instances are injected into the data model by
     * having them represented using a URI. managerFor() returns appropriately
     * the right network access manager depending on whether the URI refers to
     * a variable, or to something else.
     *
     * The constructor take a pointer to two NetworkAccessDelegator instances.
     * First is a generic one, the second is the one which handles variable
     * bindings. managerFor() then returns the appropriate one depending on the
     * URI.
     *
     * @since 4.5
     * @see AccelTreeResourceLoader::load()
     * @author Frans Englich <frans.englich@nokia.com>
     */
    class Q_AUTOTEST_EXPORT NetworkAccessDelegator : public QObject
                                                   , public QSharedData
    {
    public:
        typedef QExplicitlySharedDataPointer<NetworkAccessDelegator> Ptr;
        NetworkAccessDelegator(QNetworkAccessManager *const genericManager,
                               QNetworkAccessManager *const variableURIManager);

        QNetworkAccessManager *managerFor(const QUrl &uri);

        QPointer<QNetworkAccessManager> m_genericManager;
        QPointer<QNetworkAccessManager> m_variableURIManager;
    private:
        Q_DISABLE_COPY(NetworkAccessDelegator)
    };
}

QT_END_NAMESPACE
QT_END_HEADER

#endif
