Add multicast delegates.

src/XMPPMulticastDelegate.m

@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
+ *
+ * https://webkeks.org/hg/objxmpp/
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice is present in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#import <ObjFW/OFDataArray.h>
+
+#import "XMPPMulticastDelegate.h"
+
+@implementation XMPPMulticastDelegate
+- init
+{
+	self = [super init];
+
+	@try {
+		delegates = [[OFDataArray alloc] initWithItemSize: sizeof(id)];
+	} @catch (id e) {
+		[self release];
+		@throw e;
+	}
+
+	return self;
+}
+
+- (void)dealloc
+{
+	[delegates release];
+
+	[super dealloc];
+}
+
+- (void)addDelegate: (id <XMPPConnectionDelegate>)delegate
+{
+	[delegates addItem: &delegate];
+}
+
+- (void)removeDelegate: (id<XMPPConnectionDelegate>)delegate
+{
+	id *cArray = [delegates cArray];
+	size_t i, count = [delegates count];
+
+	for (i = 0; i < count; i++) {
+		if (cArray[i] == delegate) {
+			[delegates removeItemAtIndex: i];
+			return;
+		}
+	}
+}
+
+- (BOOL)broadcastSelector: (SEL)selector
+	    forConnection: (XMPPConnection*)connection
+{
+	id *cArray = [delegates cArray];
+	size_t i, count = [delegates count];
+	BOOL handled = NO;
+
+	for (i = 0; i < count; i++) {
+		if (![cArray[i] respondsToSelector: selector])
+			continue;
+
+		BOOL (*imp)(id, SEL, id) = (BOOL(*)(id, SEL, id))
+		    [cArray[i] methodForSelector: selector];
+
+		handled |= imp(cArray[i], selector, connection);
+	}
+
+	return handled;
+}
+
+- (BOOL)broadcastSelector: (SEL)selector
+	    forConnection: (XMPPConnection*)connection
+	       withObject: (id)object
+{
+	id *cArray = [delegates cArray];
+	size_t i, count = [delegates count];
+	BOOL handled = NO;
+
+	for (i = 0; i < count; i++) {
+		if (![cArray[i] respondsToSelector: selector])
+			continue;
+
+		BOOL (*imp)(id, SEL, id, id) = (BOOL(*)(id, SEL, id, id))
+		    [cArray[i] methodForSelector: selector];
+
+		handled |= imp(cArray[i], selector, connection, object);
+	}
+
+	return handled;
+}
+@end