text: /*
  WebWorkerFactory
  
  Copyright (c) 2015 Tony Wallace - tonywallace.ca
  
  Permission is hereby granted, free of charge, to any person obtaining a copy 
  of this software and associated documentation files (the "Software"), to deal 
  in the Software without restriction, including without limitation the rights 
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
  copies of the Software, and to permit persons to whom the Software is furnished 
  to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in all 
  copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
  INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
  PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 
  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
  CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
  OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
  
  function WebWorkerFactory() {
  
  	var _self = this;
  
  	this.makeWorkerUsingScriptAtURL = function(url, onSuccess, onError) {
  		_self.getContentsOfFileAtURL(
  			url,
  			function(fileContents) {
  				var scriptBlob = new Blob([fileContents]);
  				var scriptBlobURL = window.URL.createObjectURL(scriptBlob);
  				var worker = new Worker(scriptBlobURL);
  				if (typeof onSuccess == 'function') {
  					onSuccess(worker);
  				}
  			},
  			function(status, statusText) {
  				if (typeof onError == 'function') {
  					onError(status, statusText);
  				}
  			});
  	}
  
  	this.getContentsOfFileAtURL = function(url, onSuccess, onError) {
  		var request = new XMLHttpRequest();
  		request.open("GET", url, true);
  		request.onreadystatechange = function() {
  			if (request.readyState == 4) {
  				if (request.status == 200) {
  					if (typeof onSuccess == 'function') {
  						onSuccess(request.responseText);
  					}
  				} else {
  					if (typeof onError == 'function') {
  						onError(request.status, request.statusText);
  					}
  				}
  			}
          }
          request.send();
  	}
  
  }