src/xmlpatterns/api/qnetworkaccessdelegator_p.h
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 //
       
    43 //  W A R N I N G
       
    44 //  -------------
       
    45 //
       
    46 // This file is not part of the Qt API.  It exists purely as an
       
    47 // implementation detail.  This header file may change from version to
       
    48 // version without notice, or even be removed.
       
    49 //
       
    50 // We mean it.
       
    51 
       
    52 #ifndef QNETWORKACCESSDELEGATOR_P_H
       
    53 #define QNETWORKACCESSDELEGATOR_P_H
       
    54 
       
    55 #include <QObject>
       
    56 #include <QPointer>
       
    57 #include <QSharedData>
       
    58 
       
    59 QT_BEGIN_HEADER
       
    60 QT_BEGIN_NAMESPACE
       
    61 
       
    62 class QNetworkAccessManager;
       
    63 class QUrl;
       
    64 
       
    65 namespace QPatternist
       
    66 {
       
    67     /**
       
    68      * @short A value based class that hands out QNetworkAccessManager
       
    69      * appropriately for variable bindings.
       
    70      *
       
    71      * NetworkAccessDelegator is an indirection mechanism which takes care of
       
    72      * the fact that QIODevice instances are injected into the data model by
       
    73      * having them represented using a URI. managerFor() returns appropriately
       
    74      * the right network access manager depending on whether the URI refers to
       
    75      * a variable, or to something else.
       
    76      *
       
    77      * The constructor take a pointer to two NetworkAccessDelegator instances.
       
    78      * First is a generic one, the second is the one which handles variable
       
    79      * bindings. managerFor() then returns the appropriate one depending on the
       
    80      * URI.
       
    81      *
       
    82      * @since 4.5
       
    83      * @see AccelTreeResourceLoader::load()
       
    84      * @author Frans Englich <frans.englich@nokia.com>
       
    85      */
       
    86     class Q_AUTOTEST_EXPORT NetworkAccessDelegator : public QObject
       
    87                                                    , public QSharedData
       
    88     {
       
    89     public:
       
    90         typedef QExplicitlySharedDataPointer<NetworkAccessDelegator> Ptr;
       
    91         NetworkAccessDelegator(QNetworkAccessManager *const genericManager,
       
    92                                QNetworkAccessManager *const variableURIManager);
       
    93 
       
    94         QNetworkAccessManager *managerFor(const QUrl &uri);
       
    95 
       
    96         QPointer<QNetworkAccessManager> m_genericManager;
       
    97         QPointer<QNetworkAccessManager> m_variableURIManager;
       
    98     private:
       
    99         Q_DISABLE_COPY(NetworkAccessDelegator)
       
   100     };
       
   101 }
       
   102 
       
   103 QT_END_NAMESPACE
       
   104 QT_END_HEADER
       
   105 
       
   106 #endif