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| |
| #ifndef QNETWORKACCESSCACHE_P_H |
| #define QNETWORKACCESSCACHE_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists for the convenience |
| // of the Network Access API. This header file may change from |
| // version to version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QtNetwork/private/qtnetworkglobal_p.h> |
| #include "QtCore/qobject.h" |
| #include "QtCore/qbasictimer.h" |
| #include "QtCore/qbytearray.h" |
| #include "QtCore/qhash.h" |
| #include "QtCore/qmetatype.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QNetworkRequest; |
| class QUrl; |
| |
| // this class is not about caching files but about |
| // caching objects used by QNetworkAccessManager, e.g. existing TCP connections |
| // or credentials. |
| class QNetworkAccessCache: public QObject |
| { |
| Q_OBJECT |
| public: |
| struct Node; |
| typedef QHash<QByteArray, Node> NodeHash; |
| |
| class CacheableObject |
| { |
| friend class QNetworkAccessCache; |
| QByteArray key; |
| bool expires; |
| bool shareable; |
| public: |
| CacheableObject(); |
| virtual ~CacheableObject(); |
| virtual void dispose() = 0; |
| inline QByteArray cacheKey() const { return key; } |
| |
| protected: |
| void setExpires(bool enable); |
| void setShareable(bool enable); |
| }; |
| |
| QNetworkAccessCache(); |
| ~QNetworkAccessCache(); |
| |
| void clear(); |
| |
| void addEntry(const QByteArray &key, CacheableObject *entry); |
| bool hasEntry(const QByteArray &key) const; |
| bool requestEntry(const QByteArray &key, QObject *target, const char *member); |
| CacheableObject *requestEntryNow(const QByteArray &key); |
| void releaseEntry(const QByteArray &key); |
| void removeEntry(const QByteArray &key); |
| |
| signals: |
| void entryReady(QNetworkAccessCache::CacheableObject *); |
| |
| protected: |
| void timerEvent(QTimerEvent *) override; |
| |
| private: |
| // idea copied from qcache.h |
| NodeHash hash; |
| Node *oldest; |
| Node *newest; |
| |
| QBasicTimer timer; |
| |
| void linkEntry(const QByteArray &key); |
| bool unlinkEntry(const QByteArray &key); |
| void updateTimer(); |
| bool emitEntryReady(Node *node, QObject *target, const char *member); |
| }; |
| |
| QT_END_NAMESPACE |
| |
| Q_DECLARE_METATYPE(QNetworkAccessCache::CacheableObject*) |
| |
| #endif |