src/OFStreamObserver.h

/*
 * Copyright (c) 2008, 2009, 2010, 2011
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#if !defined(OF_HAVE_POLL) && defined(OF_HAVE_SYS_SELECT_H)
# include <sys/select.h>
#endif

#import "OFObject.h"

#ifdef _WIN32
# ifndef _WIN32_WINNT
#  define _WIN32_WINNT 0x0501
# endif
# include <windows.h>
# include <ws2tcpip.h>
#endif

@class OFStream;
#ifdef OF_HAVE_POLL
@class OFDataArray;
#endif
@class OFMutableArray;
@class OFMutableDictionary;

#ifndef OF_STREAM_OBSERVER_M
@protocol OFStreamObserverDelegate <OFObject>
#else
@protocol OFStreamObserverDelegate
#endif
#ifdef OF_HAVE_OPTIONAL_PROTOCOLS
@optional
#endif

- (void)streamDidBecomeReadyForReading: (OFStream*)stream;

- (void)streamDidBecomeReadyForWriting: (OFStream*)stream;

- (void)streamDidReceiveException: (OFStream*)stream;
@end

@interface OFStreamObserver: OFObject
{
        OFMutableArray *readStreams;
        OFMutableArray *writeStreams;
        OFMutableArray *queue, *queueInfo;
        id <OFStreamObserverDelegate> delegate;
#ifdef OF_HAVE_POLL
        OFDataArray *fds;
        OFMutableDictionary *fdToStream;
#else
        fd_set readfds;
        fd_set writefds;
        fd_set exceptfds;
        int nfds;
#endif
        int cancelFd[2];
#ifdef _WIN32
        struct sockaddr_in cancelAddr;
#endif
}

#ifdef OF_HAVE_PROPERTIES
@property (retain) id <OFStreamObserverDelegate> delegate;
#endif

+ observer;

- (id <OFStreamObserverDelegate>)delegate;

- (void)setDelegate: (id <OFStreamObserverDelegate>)delegate;

- (void)addStreamToObserveForReading: (OFStream*)stream;

- (void)addStreamToObserveForWriting: (OFStream*)stream;

- (void)removeStreamToObserveForReading: (OFStream*)stream;

- (void)removeStreamToObserveForWriting: (OFStream*)stream;

- (void)observe;

- (BOOL)observeWithTimeout: (int)timeout;
@end

@interface OFObject (OFStreamObserverDelegate) <OFStreamObserverDelegate>
@end