(function(){"use strict";class Observable{constructor(){this.listeners={}}addEventListener(type,callback){if(this.listeners[type]===undefined){this.listeners[type]=[]}this.listeners[type].push(callback)}notifyAll(event){let listeners=this.listeners[event.type];if(listeners){for(let i=0;i<listeners.length;i++){listeners[i](event)}}}}class Event{constructor(type,data){this.type=type;this.data=data}}class DataEvent extends Event{constructor(data){super("dataavailable",data)}}class ConnectionOpenedEvent extends Event{constructor(){super("connectionopened")}}class ConnectionClosedEvent extends Event{constructor(){super("connectionclosed")}}class ConnectionErrorEvent extends Event{constructor(){super("erroroccurred")}}const DATA_SEPERATOR=";";class GazeData{constructor(leftEyeX,leftEyeY,rightEyeX,rightEyeY,trackerTimeStamp,systemTimeStamp){this.leftEyeX=leftEyeX;this.leftEyeY=leftEyeY;this.rightEyeX=rightEyeX;this.rightEyeY=rightEyeY;this.trackerTimeStamp=trackerTimeStamp;this.systemTimeStamp=systemTimeStamp}static fromDataString(dataString){let dataValues=dataString.split(DATA_SEPERATOR);return new GazeData(parseFloat(dataValues[0]),parseFloat(dataValues[1]),parseFloat(dataValues[2]),parseFloat(dataValues[3]),parseInt(dataValues[4]),parseInt(dataValues[5]))}}class WebSocketClient extends Observable{constructor(){super()}connect(url){this.ws=new WebSocket(url);this.ws.onopen=onOpen.bind(this);this.ws.onclose=onClose.bind(this);this.ws.onerror=onError.bind(this);this.ws.onmessage=onMessage.bind(this)}}function onOpen(){let connectionEvent=new ConnectionOpenedEvent;this.notifyAll(connectionEvent)}function onClose(){let connectionEvent=new ConnectionClosedEvent;this.notifyAll(connectionEvent)}function onError(){let connectionEvent=new ConnectionErrorEvent;this.notifyAll(connectionEvent)}function onMessage(event){let data=GazeData.fromDataString(event.data),dataEvent=new DataEvent(data);this.notifyAll(dataEvent)}class GazeClient extends Observable{constructor(){super()}connect(url){this.url=url;this.client=new WebSocketClient;this.client.addEventListener("connectionopened",this.onConnected.bind(this));this.client.addEventListener("connectionclosed",this.onDisconnected.bind(this));this.client.addEventListener("erroroccurred",this.onDisconnected.bind(this));this.client.addEventListener("dataavailable",this.onDataAvailable.bind(this));this.client.connect(url)}onConnected(event){this.notifyAll(event)}onDisconnected(event){this.notifyAll(event)}onError(event){this.notifyAll(event)}onDataAvailable(event){this.notifyAll(event)}}window.GazeClient=GazeClient})();
