/* * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved. * * The contents of this file constitute Original Code as defined in and are * subject to the Apple Public Source License Version 1.2 (the 'License'). * You may not use this file except in compliance with the License. Please obtain * a copy of the License at http://www.apple.com/publicsource and read it before * using this file. * * This Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the * specific language governing rights and limitations under the License. */ // // observer - notification client for network events // #ifndef _H_OBSERVER #define _H_OBSERVER #include <Security/utilities.h> namespace Security { namespace Network { class Transfer; // // An Observer object has a set (bitmask) of events it is interested in. // Observers are registered with Transfer and Manager objects to take effect. // class Observer { public: virtual ~Observer(); public: enum { noEvents = 0x000000, // mask for no events transferStarting = 0x000001, // starting transfer operation transferComplete = 0x000002, // successfully finished transferFailed = 0x000004, // failed somehow connectEvent = 0x000800, // transport level connection done or failed protocolSend = 0x001000, // low-level protocol message sent protocolReceive = 0x002000, // low-level protocol message received //@@@ questionable resourceFound = 0x000008, // resource found, OK to continue downloading = 0x000010, // downloading in progress aborting = 0x000020, // abort in progress dataAvailable = 0x000040, // data ready to go systemEvent = 0x000080, // ??? percentEvent = 0x000100, // a >= 1% data move has occurred periodicEvent = 0x000200, // call every so often (.25 sec) propertyChangedEvent = 0x000400, resultCodeReady = 0x004000, // result code has been received by HTTP uploading = 0x008000, // uploading allEvents = 0xFFFFFFFF // mask for all events }; typedef uint32 Event, Events; void setEvents(Events mask) { mEventMask = mask; } Events getEvents() const { return mEventMask; } bool wants(Events events) const { return mEventMask & events; } virtual void observe(Events events, Transfer *xfer, const void *info = NULL) = 0; private: Events mEventMask; }; } // end namespace Network } // end namespace Security #endif _H_OBSERVER