src/xmlpatterns/api/qiodevicedelegate_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 QIODEVICEDELEGATE_P_H
       
    53 #define QIODEVICEDELEGATE_P_H
       
    54 
       
    55 #include <QtCore/QTimer>
       
    56 #include <QtNetwork/QNetworkReply>
       
    57 
       
    58 QT_BEGIN_NAMESPACE
       
    59 
       
    60 namespace QPatternist
       
    61 {
       
    62     /**
       
    63      * This is read-only currently.
       
    64      */
       
    65     class QIODeviceDelegate : public QNetworkReply
       
    66     {
       
    67         Q_OBJECT
       
    68     public:
       
    69         QIODeviceDelegate(QIODevice *const source);
       
    70 
       
    71         virtual void abort();
       
    72 
       
    73         virtual bool atEnd() const;
       
    74         virtual qint64 bytesAvailable() const;
       
    75         virtual qint64 bytesToWrite() const;
       
    76         virtual bool canReadLine() const;
       
    77         virtual void close();
       
    78         virtual bool isSequential() const;
       
    79         virtual bool open(OpenMode mode);
       
    80         virtual qint64 pos() const;
       
    81         virtual bool reset();
       
    82         virtual bool seek(qint64 pos);
       
    83         virtual qint64 size() const;
       
    84         virtual bool waitForBytesWritten(int msecs);
       
    85         virtual bool waitForReadyRead(int msecs);
       
    86 
       
    87     protected:
       
    88         virtual qint64 readData(char *data, qint64 maxSize);
       
    89 
       
    90     private Q_SLOTS:
       
    91         void networkTimeout();
       
    92     private:
       
    93         enum
       
    94         {
       
    95             /**
       
    96              * 20 seconds expressed in milliseconds.
       
    97              */
       
    98             Timeout = 20000
       
    99         };
       
   100 
       
   101         QIODevice *const m_source;
       
   102         QTimer m_timeout;
       
   103     };
       
   104 }
       
   105 
       
   106 QT_END_NAMESPACE
       
   107 
       
   108 #endif