ObjFW  Diff

 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFNotificationCenter.h"
#import "OFArray.h"
#import "OFDictionary.h"
#ifdef OF_HAVE_THREADS
# import "OFMutex.h"
#endif
#import "OFSet.h"
#import "OFString.h"

@interface OFDefaultNotificationCenter: OFNotificationCenter
@end

@interface OFNotificationRegistration: OFObject
@interface OFNotificationHandler: OFObject
{
@public
	id _observer;
	SEL _selector;
	unsigned long _selectorHash;
	id _object;
}

- (instancetype)initWithObserver: (id)observer
			selector: (SEL)selector
			  object: (id)object;
@end

static OFNotificationCenter *defaultCenter;

@implementation OFNotificationRegistration
@implementation OFNotificationHandler
- (instancetype)initWithObserver: (id)observer
			selector: (SEL)selector
			  object: (id)object
{
	self = [super init];

	@try {

{
	[_observer release];
	[_object release];

	[super dealloc];
}

- (bool)isEqual: (OFNotificationRegistration *)registration
- (bool)isEqual: (OFNotificationHandler *)handler
{
	if (![registration isKindOfClass: [OFNotificationRegistration class]])
	if (![handler isKindOfClass: [OFNotificationHandler class]])
		return false;

	if (![registration->_observer isEqual: _observer])
	if (![handler->_observer isEqual: _observer])
		return false;

	if (!sel_isEqual(registration->_selector, _selector))
	if (!sel_isEqual(handler->_selector, _selector))
		return false;

	if (registration->_object != _object &&
	    ![registration->_object isEqual: _object])
	if (handler->_object != _object && ![handler->_object isEqual: _object])
		return false;

	return true;
}

- (unsigned long)hash
{

- (void)addObserver: (id)observer
	   selector: (SEL)selector
	       name: (OFNotificationName)name
	     object: (id)object
{
	void *pool = objc_autoreleasePoolPush();
	OFNotificationRegistration *registration =
	    [[[OFNotificationRegistration alloc]
	OFNotificationHandler *handler = [[[OFNotificationHandler alloc]
	    initWithObserver: observer
		    selector: selector
		      object: object] autorelease];

#ifdef OF_HAVE_THREADS
	[_mutex lock];
	@try {
#endif
		OFMutableSet *notificationsForName =
		    [_notifications objectForKey: name];

		if (notificationsForName == nil) {
			notificationsForName = [OFMutableSet set];
			[_notifications setObject: notificationsForName
					   forKey: name];
		}

		[notificationsForName addObject: registration];
		[notificationsForName addObject: handler];
#endif
#ifdef OF_HAVE_THREADS
	} @finally {
		[_mutex unlock];
	}
#endif

	objc_autoreleasePoolPop(pool);
}

- (void)removeObserver: (id)observer
	      selector: (SEL)selector
		  name: (OFNotificationName)name
		object: (id)object
{
	void *pool = objc_autoreleasePoolPush();
	OFNotificationRegistration *registration =
	    [[[OFNotificationRegistration alloc]
	OFNotificationHandler *handler = [[[OFNotificationHandler alloc]
	    initWithObserver: observer
		    selector: selector
		      object: object] autorelease];

#ifdef OF_HAVE_THREADS
	[_mutex lock];
	@try {
		[[_notifications objectForKey: name]
		    removeObject: registration];
#endif
		[[_notifications objectForKey: name] removeObject: handler];
#ifdef OF_HAVE_THREADS
	} @finally {
		[_mutex unlock];
	}
#endif

	objc_autoreleasePoolPop(pool);
}

- (void)postNotification: (OFNotification *)notification
{
	void *pool = objc_autoreleasePoolPush();
	OFMutableArray *matchedHandlers = [OFMutableArray array];

#ifdef OF_HAVE_THREADS
	[_mutex lock];
	@try {
#endif
		for (OFNotificationRegistration *registration in
		    [_notifications objectForKey: notification.name]) {
		for (OFNotificationHandler *handler in
		    [_notifications objectForKey: notification.name])
			void (*callback)(id, SEL, OFNotification *);

			if (handler->_object == nil ||
			if (registration->_object != nil &&
			    registration->_object != notification.object)
			    handler->_object == notification.object)
				continue;

				[matchedHandlers addObject: handler];
			callback = (void (*)(id, SEL, OFNotification *))
			    [registration->_observer methodForSelector:
			    registration->_selector];
			callback(registration->_observer,
			    registration->_selector, notification);
		}
#endif
#ifdef OF_HAVE_THREADS
	} @finally {
		[_mutex unlock];
	}
#endif

	for (OFNotificationHandler *handler in matchedHandlers) {
		void (*callback)(id, SEL, OFNotification *) =
		    (void (*)(id, SEL, OFNotification *))
		    [handler->_observer methodForSelector: handler->_selector];

		callback(handler->_observer, handler->_selector, notification);
	}

	objc_autoreleasePoolPop(pool);
}
@end

@implementation OFDefaultNotificationCenter
- (instancetype)autorelease
{
	return self;