ObjXMPP  Check-in [1ee9a1a87a]

/**
 * \brief A class to provide multiple delegates in a single class
 */
@interface XMPPMulticastDelegate: OFObject
{
	OFDataArray *_delegates;
	size_t handlerIndex;
}

/**
 * \brief Adds a delegate which should receive the broadcasts.
 *
 * \param delegate The delegate to add
 */

- (void)removeDelegate: (id)delegate
{
	id *items = [_delegates items];
	size_t i, count = [_delegates count];

	for (i = 0; i < count; i++) {
		if (items[i] == delegate) {
			[_delegates removeItemAtIndex: i];
			return;
		if (items[i] != delegate)
			continue;

		[_delegates removeItemAtIndex: i];
		if (i <= handlerIndex)
			handlerIndex--;
		return;
		}
	}
}

- (BOOL)broadcastSelector: (SEL)selector
	       withObject: (id)object
{
	size_t count = [_delegates count];
	id *items = [_delegates items];
	size_t i, count = [_delegates count];
	BOOL handled = NO;

	for (i = 0; i < count; i++) {
		if (![items[i] respondsToSelector: selector])
	for (handlerIndex = 0; handlerIndex < count; handlerIndex++) {
		id responder = items[handlerIndex];
		if (![responder respondsToSelector: selector])
			continue;

		BOOL (*imp)(id, SEL, id) = (BOOL(*)(id, SEL, id))
		    [items[i] methodForSelector: selector];
		    [responder methodForSelector: selector];

		handled |= imp(items[i], selector, object);
		handled |= imp(responder, selector, object);
		// Update count and items, since the handler might have
		// changed them.
		count = [_delegates count];
		items = [_delegates items];
	}

	return handled;
}

- (BOOL)broadcastSelector: (SEL)selector
	       withObject: (id)object1
	       withObject: (id)object2
{
	size_t count = [_delegates count];
	id *items = [_delegates items];
	size_t i, count = [_delegates count];
	BOOL handled = NO;

	for (i = 0; i < count; i++) {
		if (![items[i] respondsToSelector: selector])
	for (handlerIndex = 0; handlerIndex < count; handlerIndex++) {
		id responder = items[handlerIndex];
		if (![responder respondsToSelector: selector])
			continue;

		BOOL (*imp)(id, SEL, id, id) = (BOOL(*)(id, SEL, id, id))
		    [items[i] methodForSelector: selector];
		    [responder methodForSelector: selector];

		handled |= imp(items[i], selector, object1, object2);
		handled |= imp(responder, selector, object1, object2);
		// Update count and items, since the handler might have
		// changed them.
		count = [_delegates count];
		items = [_delegates items];
	}

	return handled;
}
@end