qnetworkdiskcache.h

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00001 /****************************************************************************
00002 **
00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
00004 ** All rights reserved.
00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
00006 **
00007 ** This file is part of the QtNetwork module of the Qt Toolkit.
00008 **
00009 ** $QT_BEGIN_LICENSE:LGPL$
00010 ** Commercial Usage
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00012 ** accordance with the Qt Commercial License Agreement provided with the
00013 ** Software or, alternatively, in accordance with the terms contained in
00014 ** a written agreement between you and Nokia.
00015 **
00016 ** GNU Lesser General Public License Usage
00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
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00024 ** In addition, as a special exception, Nokia gives you certain additional
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00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
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00028 ** GNU General Public License Usage
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00041 
00042 #ifndef QNETWORKDISKCACHE_H
00043 #define QNETWORKDISKCACHE_H
00044 
00045 #include <QtNetwork/qabstractnetworkcache.h>
00046 
00047 QT_BEGIN_HEADER
00048 
00049 QT_BEGIN_NAMESPACE
00050 
00051 QT_MODULE(Network)
00052 
00053 #ifndef QT_NO_NETWORKDISKCACHE
00054 
00055 class QNetworkDiskCachePrivate;
00056 class Q_NETWORK_EXPORT QNetworkDiskCache : public QAbstractNetworkCache
00057 {
00058     Q_OBJECT
00059 
00060 public:
00061     explicit QNetworkDiskCache(QObject *parent = 0);
00062     ~QNetworkDiskCache();
00063 
00064     QString cacheDirectory() const;
00065     void setCacheDirectory(const QString &cacheDir);
00066 
00067     qint64 maximumCacheSize() const;
00068     void setMaximumCacheSize(qint64 size);
00069 
00070     qint64 cacheSize() const;
00071     QNetworkCacheMetaData metaData(const QUrl &url);
00072     void updateMetaData(const QNetworkCacheMetaData &metaData);
00073     QIODevice *data(const QUrl &url);
00074     bool remove(const QUrl &url);
00075     QIODevice *prepare(const QNetworkCacheMetaData &metaData);
00076     void insert(QIODevice *device);
00077 
00078     QNetworkCacheMetaData fileMetaData(const QString &fileName) const;
00079 
00080 public Q_SLOTS:
00081     void clear();
00082 
00083 protected:
00084     virtual qint64 expire();
00085 
00086 private:
00087     Q_DECLARE_PRIVATE(QNetworkDiskCache)
00088     Q_DISABLE_COPY(QNetworkDiskCache)
00089 };
00090 
00091 #endif // QT_NO_NETWORKDISKCACHE
00092 
00093 QT_END_NAMESPACE
00094 
00095 QT_END_HEADER
00096 
00097 #endif // QNETWORKDISKCACHE_H