1 files changed, 45 insertions, 0 deletions
diff --git a/js/dojo/dojox/lang/async/topic.js b/js/dojo/dojox/lang/async/topic.js
new file mode 100644
index 0000000..b2ac15e
--- /dev/null
+++ b/js/dojo/dojox/lang/async/topic.js
@@ -0,0 +1,45 @@
+//>>built
+// wrapped by build app
+define("dojox/lang/async/topic", ["dijit","dojo","dojox"], function(dijit,dojo,dojox){
+dojo.provide("dojox.lang.async.topic");
+
+// Source of Deferred for topics
+
+(function(){
+	var d = dojo, topic = dojox.lang.async.topic;
+
+	topic.from = function(topic){
+		return function(){
+			var h, cancel = function(){
+					if(h){
+						d.unsubscribe(h);
+						h = null;
+					}
+				},
+				x = new d.Deferred(cancel);
+			h = d.subscribe(topic, function(){
+				cancel();
+				x.callback(arguments);
+			});
+			return x;
+		};
+	};
+
+	topic.failOn = function(topic){
+		return function(){
+			var h, cancel = function(){
+					if(h){
+						d.unsubscribe(h);
+						h = null;
+					}
+				},
+				x = new d.Deferred(cancel);
+			h = d.subscribe(topic, function(evt){
+				cancel();
+				x.errback(new Error(arguments));
+			});
+			return x;
+		};
+	};
+})();
+});