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(NSNotification): Add placeholder ivars so our instance size matches that of the behavior class that will be added. git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1322 72102866-910b-0410-8b05-ffd578937521
97 lines
2.9 KiB
Objective-C
97 lines
2.9 KiB
Objective-C
/* Interface for NSNotification and NSNotificationCenter for GNUStep
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Copyright (C) 1996 Free Software Foundation, Inc.
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Written by: R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
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Created: March 1996
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This file is part of the GNU Objective C Class Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __NSNotification_h_OBJECTS_INCLUDE
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#define __NSNotification_h_OBJECTS_INCLUDE
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#include <objects/stdobjects.h>
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#include <objects/Notification.h>
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@class NSString;
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@class NSDictionary;
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@interface NSNotification : NSObject
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{
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/* Make the instance size of this class match exactly the instance
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size of Notification. Thus, behavior_class_add_class() will not
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have to increase the instance size of NSNotification, and
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NSNotification can safely be subclassed. */
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char _NSNotification_placeholder[(sizeof(struct NSObject)
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- sizeof(struct Notification))];
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}
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@end
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/* Put this in a category to avoid unimportant errors due to behaviors. */
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@interface NSNotification (GNUstep) <NSCopying>
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/* Creating a Notification Object */
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+ (NSNotification*) notificationWithName: (NSString*)name
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object: object;
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+ (NSNotification*) notificationWithName: (NSString*)name
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object: object
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userInfo: (NSDictionary*)user_info;
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/* Querying a Notification Object */
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- (NSString*) name;
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- object;
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- (NSDictionary*) userInfo;
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@end
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/* Put this in a category to avoid unimportant errors due to behaviors. */
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@interface NSNotificationCenter : NSObject
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@end
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@interface NSNotificationCenter (GNUstep)
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/* Getting the default NotificationCenter */
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+ (NSNotificationCenter*) defaultCenter;
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/* Adding and removing observers */
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- (void) addObserver: anObserver
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selector: (SEL)selector
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name: (NSString*)name
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object: object;
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- (void) removeObserver: anObserver;
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- (void) removeObserver: anObserver
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name: (NSString*)name
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object: object;
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/* Posting Notifications */
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- (void) postNotification: (NSNotification*)aNotification;
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- (void) postNotificationName: (NSString*)name
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object: object;
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- (void) postNotificationName: (NSString*)name
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object: object
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userInfo: (NSDictionary*)user_info;
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@end
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#endif /*__NSNotification_h_OBJECTS_INCLUDE */
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