46 lines
861 B
JavaScript
46 lines
861 B
JavaScript
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//>>built
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// wrapped by build app
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define("dojox/lang/async/topic", ["dijit","dojo","dojox"], function(dijit,dojo,dojox){
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dojo.provide("dojox.lang.async.topic");
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// Source of Deferred for topics
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(function(){
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var d = dojo, topic = dojox.lang.async.topic;
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topic.from = function(topic){
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return function(){
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var h, cancel = function(){
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if(h){
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d.unsubscribe(h);
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h = null;
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}
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},
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x = new d.Deferred(cancel);
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h = d.subscribe(topic, function(){
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cancel();
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x.callback(arguments);
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});
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return x;
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};
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};
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topic.failOn = function(topic){
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return function(){
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var h, cancel = function(){
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if(h){
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d.unsubscribe(h);
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h = null;
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}
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},
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x = new d.Deferred(cancel);
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h = d.subscribe(topic, function(evt){
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cancel();
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x.errback(new Error(arguments));
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});
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return x;
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};
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};
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})();
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});
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