Multi-dependency pubsub with jQuery.Callbacks() and jQuery.Deferreds()

jquery.multi-pubsub.js

/*!
 * jQuery multi-dependency pubsub v0.01
 * Copyright 2011, Adam Laughlin
 * http://a-laughlin.com
 * Licensed under MIT & GPL version 2
 * http://static.a-laughlin.com/mit_license.txt
 * http://static.a-laughlin.com/gpl_license.txt
 * 
 * inspired by Addy Osmani's example at:
 * http://addyosmani.com/blog/jquery-1-7s-callbacks-feature-demystified/
 */

/*
(function($){
jQuery.pubsub=(function(){
  var callbacks={}; // holds the pubsub objects
  
  function CbObj(cbName){ // constructor for the pubsub objects
    return $.extend($.Callbacks('unique memory'),$.Deferred(),{callbackName:cbName})
  };
	
  return function(namesStr){
    if(typeof namesStr!='string') throw 'pubsub only accepts strings';
    var namesArray = namesStr.split(' '),
    cbsArray= $.map(namesArray,function(name){
      return callbacks[name] = callbacks[name]|| CbObj(name);
    });
    function publish(msg){ // wrapper for both $.Callbacks().fire() and $.Deferred().resolve();
      return $.each(cbsArray,function(cbnum,cb){
        cb.fire(msg);
        cb.resolve(msg);
      });
    };
    function subscribe(){ // wrapper as $.Callbacks().add()
      var fns=arguments;
      return $.each(cbsArray,function(cbnum,cb){
        cb.add.apply(cb,fns);
      });
    };
    function fail(){ // wrapper for $.Deferred().fail()
      var fns=arguments;
      $.when.apply(null,cbsArray)
      .fail.apply(null,fns);
      return cbsArray;
    };
    function done(){ // wrapper for $.Deferred().done()
      var fns=arguments;
      $.when.apply(null,cbsArray)
      .done.apply(null,fns);
      return cbsArray;
    };
    function unsubscribe(){ // wrapper for $.Callbacks().remove(). Also resets deferred if resolved.
      var fns=arguments;
      return $.each(cbsArray,function(cbnum,cb){
        cb.remove.apply(cb,fns);
        if (cb.state()==='resolved') $.extend(cb,$.Deferred());
      });
    };
    function empty(){
      return $.each(cbsArray,function(cbnum,cb){ // wrapper for $.Callbacks().empty(). Also resets deferred if resolved.
        cb.empty();
        if (cb.state()==='resolved') $.extend(cb,$.Deferred());
      });
    };
    function reset(){ // reset each pubsub object to its original state
      return $.each(cbsArray,function(cbnum,cb){
        callbacks[cb.callbackName] = new CbObj(cb.callbackName);
      });
    };
    return {publish:publish,subscribe:subscribe,unsubscribe:unsubscribe,empty:empty,done:done,reset:reset};
  }
})();
})(jQuery);