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diff --git a/khtml/khtml_pagecache.h b/khtml/khtml_pagecache.h
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+/* This file is part of the KDE project
+ *
+ * Copyright (C) 2000  Waldo Bastian <bastian@kde.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+#ifndef __khtml_pagecache_h__
+#define __khtml_pagecache_h__
+
+#include <qobject.h>
+#include <qcstring.h>
+#include <qvaluelist.h>
+#include <qptrlist.h>
+
+class KHTMLPageCachePrivate;
+
+/**
+ * Singleton Object that handles a binary cache on top of
+ * the http cache management of kio.
+ *
+ * A limited number of HTML pages are stored in this cache. This
+ * cache is used for the history and operations like "view source".
+ * These operations always want to use the original document and 
+ * don't want to fetch the data from the network again.
+ *
+ * It operates completely independent from the kio_http cache.
+ */
+class KHTMLPageCache : public QObject
+{
+  Q_OBJECT
+public:
+  /**
+   * static "constructor".
+   * @return returns a pointer to the cache, if it exists.
+   * creates a new cache otherwise.
+   */
+  static KHTMLPageCache *self();
+  ~KHTMLPageCache();
+  
+  /**
+   * Create a new cache entry. 
+   *
+   * @return a cache entry ID is returned.
+   */
+  long createCacheEntry();
+
+  /**
+   * Add @p data to the cache entry with id @p id.
+   */
+  void addData(long id, const QByteArray &data);
+
+  /**
+   * Signal end of data for the cache entry with id @p id.
+   * After calling this the entry is marked complete 
+   */
+  void endData(long id);
+
+  /**
+   * Cancel the entry.
+   */
+  void cancelEntry(long id);
+
+  /**
+   * @return true when the cache entry with id @p is still valid,
+   * and at least some of the data is available for reading (the
+   * complete data may not yet be loaded)
+   */
+  bool isValid(long id);
+
+  /**
+   * @return true when the cache entry with id @p is still valid,
+   * and the complete data is available for reading
+   */
+  bool isComplete(long id);
+  
+  /**
+   * Fetch data for cache entry @p id and send it to slot @p recvSlot
+   * in the object @p recvObj
+   */
+  void fetchData(long id, QObject *recvObj, const char *recvSlot);
+
+  /**
+   * Cancel sending data to @p recvObj
+   */
+  void cancelFetch(QObject *recvObj);
+
+  /**
+   * Save the data of cache entry @p id to the datastream @p str
+   */
+  void saveData(long id, QDataStream *str);
+
+private slots:
+  void sendData();
+
+private:  
+  KHTMLPageCache();
+
+  static KHTMLPageCache *_self;
+
+  KHTMLPageCachePrivate *d;  
+};
+
+class KHTMLPageCacheDelivery : public QObject
+{
+   friend class KHTMLPageCache;
+Q_OBJECT
+public:
+   KHTMLPageCacheDelivery(int _fd)
+    : fd(_fd) { }
+   ~KHTMLPageCacheDelivery();
+
+signals:
+   void emitData(const QByteArray &data);
+
+public: 
+   QObject *recvObj;
+   int fd;      
+};
+
+
+#endif