js-event-bus/lib/js-event-bus.min.js

Event bus for your Javascript applications

(function(caller,bus){if(typeof exports==="object"&&typeof module==="object"){module.exports=bus();module.exports.default=module.exports}else if(typeof exports==="object"){exports.EventBus=bus()}else{caller.EventBus=bus()}})(this,function(){var EventBus=function(){this.listeners={};this.registerListener=function(event,callback,number){var type=event.constructor.name;number=this.validateNumber(number||"any");if(type!=="Array"){event=[event]}event.forEach(function(e){if(e.constructor.name!=="String"){throw new Error("Only `String` and array of `String` are accepted for the event names!")}that.listeners[e]=that.listeners[e]||[];that.listeners[e].push({callback:callback,number:number})})};this.validateNumber=function(n){var type=n.constructor.name;if(type==="Number"){return n}else if(type==="String"&&n.toLowerCase()==="any"){return"any"}throw new Error("Only `Number` and `any` are accepted in the number of possible executions!")};this.toBeRemoved=function(info){var number=info.number;info.execution=info.execution||0;info.execution++;if(number==="any"||info.execution<number){return false}return true};var that=this;return{on:function(eventName,callback){that.registerListener.bind(that)(eventName,callback,"any")},once:function(eventName,callback){that.registerListener.bind(that)(eventName,callback,1)},exactly:function(number,eventName,callback){that.registerListener.bind(that)(eventName,callback,number)},die:function(eventName){delete that.listeners[eventName]},off:function(eventName){this.die(eventName)},detach:function(eventName,callback){if(callback===undefined){that.listeners[eventName]=[];return true}for(var k in that.listeners[eventName]){if(that.listeners[eventName].hasOwnProperty(k)&&that.listeners[eventName][k].callback===callback){that.listeners[eventName].splice(k,1);return this.detach(eventName,callback)}}return true},detachAll:function(){for(var eventName in that.listeners){if(that.listeners.hasOwnProperty(eventName)){this.detach(eventName)}}},emit:function(eventName,context){var listeners=[];for(var name in that.listeners){if(that.listeners.hasOwnProperty(name)){if(name===eventName){Array.prototype.push.apply(listeners,that.listeners[name])}if(name.indexOf("*")>=0){var newName=name.replace(/\*\*/,"([^.]+.?)+");newName=newName.replace(/\*/g,"[^.]+");var match=eventName.match(newName);if(match&&eventName===match[0]){Array.prototype.push.apply(listeners,that.listeners[name])}}}}var parentArgs=arguments;context=context||this;listeners.forEach(function(info,index){var callback=info.callback;var number=info.number;if(context){callback=callback.bind(context)}var args=[];Object.keys(parentArgs).map(function(i){if(i>1){args.push(parentArgs[i])}});if(that.toBeRemoved(info)){that.listeners[eventName].splice(index,1)}callback.apply(null,args)})}}};return EventBus});