A dispatcher for twbs/ratchet that fires events on page/route change

ratchet-dispatcher.js

window.Dispatcher = (function(win){

	var instance;

	function init(){

		var 
			callbackRegister = {},
			pageCheck;

		/**
		 * [registerCallback description]
		 * @param  {string}   page     
		 * @param  {Function} callback [description]
		 * @return void
		 */
		var registerCallback = function(page,callback){
			
			callbackRegister[page] =  callbackRegister[page] || [];
			callbackRegister[page].push(callback);

			return instance;
		
		};

		/**
		 * [registerCallbacks description]
		 * @param  {[type]} page      [description]
		 * @param  {[type]} callbacks [description]
		 * @return {[type]}           [description]
		 */
		var registerCallbacks = function(page,callbacks){

			callbacks.forEach(function(callback){
				registerCallback(page,callback);
			});

			return instance;

		};

		var fireCallbacksOn = function(events){

			events.forEach(function(event){
				
				win.addEventListener(event,function(){		
			
					fireCallbacks();

				});
			});

		};

		/**
		 * [setPageCheck description]
		 * @param {Function} fn [description]
		 */
		var setPageCheck = function(fn){
			pageCheck = fn;
		};

		/**
		 * [fireCallbacks description]
		 * @return {[type]} [description]
		 */
		var fireCallbacks = function(){
			
			for(var page in callbackRegister){
				
				if(callbackRegister.hasOwnProperty(page)){
			
					if(pageCheck(page)){

						callbackRegister[page].forEach(function(callback){

							callback();

						});
					}			
				
				}
			}
		
		};

		return {
			registerCallback : registerCallback,
			registerCallbacks : registerCallbacks,
			fireCallbacksOn : fireCallbacksOn,
			setPageCheck : setPageCheck
		};
	}

	return {
		getInstance : function(){
			if(!instance){
				instance = init();
			}

			return instance;
		}
	};

})(window);