text: /* ***** BEGIN LICENSE BLOCK *****
   * Distributed under the BSD license:
   *
   * Copyright (c) 2010, Ajax.org B.V.
   * All rights reserved.
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above copyright
   *       notice, this list of conditions and the following disclaimer in the
   *       documentation and/or other materials provided with the distribution.
   *     * Neither the name of Ajax.org B.V. nor the
   *       names of its contributors may be used to endorse or promote products
   *       derived from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * ***** END LICENSE BLOCK ***** */
  
  define(function(require, exports, module) {
  "use strict";
  
  /*
   * I hate doing this, but we need some way to determine if the user is on a Mac
   * The reason is that users have different expectations of their key combinations.
   *
   * Take copy as an example, Mac people expect to use CMD or APPLE + C
   * Windows folks expect to use CTRL + C
   */
  exports.OS = {
      LINUX: "LINUX",
      MAC: "MAC",
      WINDOWS: "WINDOWS"
  };
  
  /*
   * Return an exports.OS constant
   */
  exports.getOS = function() {
      if (exports.isMac) {
          return exports.OS.MAC;
      } else if (exports.isLinux) {
          return exports.OS.LINUX;
      } else {
          return exports.OS.WINDOWS;
      }
  };
  
  // this can be called in non browser environments (e.g. from ace/requirejs/text)
  if (typeof navigator != "object")
      return;
  
  var os = (navigator.platform.match(/mac|win|linux/i) || ["other"])[0].toLowerCase();
  var ua = navigator.userAgent;
  
  // Is the user using a browser that identifies itself as Windows
  exports.isWin = (os == "win");
  
  // Is the user using a browser that identifies itself as Mac OS
  exports.isMac = (os == "mac");
  
  // Is the user using a browser that identifies itself as Linux
  exports.isLinux = (os == "linux");
  
  // Windows Store JavaScript apps (aka Metro apps written in HTML5 and JavaScript) do not use the "Microsoft Internet Explorer" string in their user agent, but "MSAppHost" instead.
  exports.isIE = 
      (navigator.appName == "Microsoft Internet Explorer" || navigator.appName.indexOf("MSAppHost") >= 0)
      ? parseFloat((ua.match(/(?:MSIE |Trident\/[0-9]+[\.0-9]+;.*rv:)([0-9]+[\.0-9]+)/)||[])[1])
      : parseFloat((ua.match(/(?:Trident\/[0-9]+[\.0-9]+;.*rv:)([0-9]+[\.0-9]+)/)||[])[1]); // for ie
      
  exports.isOldIE = exports.isIE && exports.isIE < 9;
  
  // Is this Firefox or related?
  exports.isGecko = exports.isMozilla = ua.match(/ Gecko\/\d+/);
  
  // Is this Opera 
  exports.isOpera = window.opera && Object.prototype.toString.call(window.opera) == "[object Opera]";
  
  // Is the user using a browser that identifies itself as WebKit 
  exports.isWebKit = parseFloat(ua.split("WebKit/")[1]) || undefined;
  
  exports.isChrome = parseFloat(ua.split(" Chrome/")[1]) || undefined;
  
  exports.isAIR = ua.indexOf("AdobeAIR") >= 0;
  
  exports.isIPad = ua.indexOf("iPad") >= 0;
  
  exports.isChromeOS = ua.indexOf(" CrOS ") >= 0;
  
  exports.isIOS = /iPad|iPhone|iPod/.test(ua) && !window.MSStream;
  
  if (exports.isIOS) exports.isMac = true;
  
  });
  