# Source: loader.js

    /**
     *   MetacatUI
     *   https://github.com/NCEAS/metacatui
     *   MetacatUI is a client-side web interface for querying Metacat servers and other servers that implement the DataONE REST API.
     **/

    /**
    * @global
    * @description The global object that contains all of the MetacatUI top-level classes, variables, and functions.
    * @type {object}
    */
    var MetacatUI = MetacatUI || {};

    MetacatUI.loadTheme = function(theme) {
      //---- Get the MetacatUI root ----/
      // Find out of MetacatUI is deployed in a sub-directory off the top level of
      // the domain. This value is used throughout the app to determin the location
      // of assets and, if not set correctly, a lot of things break. Your web server
      // should also set a FallbackResource directive accordingly in order to support
      // users entering MetacatUI from URLs other than the root
      MetacatUI.root = (typeof MetacatUI.AppConfig.root == "string")? MetacatUI.AppConfig.root : "/metacatui";
      // Remove trailing slash if one is present
      MetacatUI.root = MetacatUI.root.replace(/\/$/, "");

      //Get the loader element from index.html, which was used to configure the app pre-MetacatUI 2.12.0
      //Configurations should go in the AppConfig file, as of MetacatUI 2.12.0
      var loaderEl = document.getElementById("loader");

      //---- Get the theme name ----/
      //Get the the name from the AppConfig file (the recommended way as of MetacatUI 2.12.0)
      if(typeof MetacatUI.AppConfig.theme == "string" && MetacatUI.AppConfig.theme.length > 0){
        MetacatUI.theme = MetacatUI.AppConfig.theme;
      }
      //Get the the name from the index.html file (old way - will be deprecated in the future!)
      else if( loaderEl && typeof loaderEl.getAttribute("data-theme") == "string" ){
        MetacatUI.theme = loaderEl.getAttribute("data-theme");
      }
      //Default to the "default" theme if one isn't specified
      else{
        MetacatUI.theme = "default";
      }

      //---Get the metacat context ---
      // Use the metacat context from the index.html file if it is NOT in the AppConfig. (old way - will be deprecated in the future!)
      // As of MetacatUI 2.12.0, it is recommended to put the metacatContext in the AppConfig file.
      if( loaderEl && typeof loaderEl.getAttribute("data-metacat-context") == "string" &&
          typeof MetacatUI.AppConfig.metacatContext == "undefined" ){
        MetacatUI.AppConfig.metacatContext = loaderEl.getAttribute("data-metacat-context");
      }
      //Add a leading forward slash to the context
      if( MetacatUI.AppConfig.metacatContext && MetacatUI.AppConfig.metacatContext.charAt(0) !== "/" ){
        MetacatUI.AppConfig.metacatContext = "/" + MetacatUI.AppConfig.metacatContext;
      }

      //---Get the Google Maps API Key---
      //The recommended way to set the Google Maps API Key is in the AppConfig file, as of MetacatUI 2.12.0
      MetacatUI.mapKey = loaderEl? loaderEl.getAttribute("data-map-key") : null;
      if( typeof MetacatUI.mapKey !== "string" || typeof MetacatUI.AppConfig.mapKey == "string" ){
        MetacatUI.mapKey = MetacatUI.AppConfig.mapKey;
        if( (MetacatUI.mapKey == "YOUR-GOOGLE-MAPS-API-KEY") || (!MetacatUI.mapKey) ){
          MetacatUI.mapKey = null;
        }
      }

      //---- Load the theme config file ----
      var script = document.createElement("script");
      script.setAttribute("type", "text/javascript");
      script.setAttribute("src", MetacatUI.root + "/js/themes/" + MetacatUI.theme + "/config.js?v=" + MetacatUI.metacatUIVersion);
      document.getElementsByTagName("body")[0].appendChild(script);

      //When the theme config file is loaded, intialize the application
      script.onload = function(){
        //If this theme has a custom function to start the app, then use it
        if(typeof MetacatUI.customInitApp == "function") {
              MetacatUI.customInitApp();
          }
        //Start the app
        else MetacatUI.initApp();
      }
    }
    MetacatUI.initApp = function () {
        var script = document.createElement("script");
        script.setAttribute("data-main", MetacatUI.root + "/js/app.js?v=" + MetacatUI.metacatUIVersion);
        script.src = MetacatUI.root + "/components/require.js";
        document.getElementsByTagName("body")[0].appendChild(script);
    }

    // Fix compatibility issues with mainly IE 8 and earlier. Do this before the rest of the app loads since even common
    // functions are missing, such as console.log
    MetacatUI.preventCompatibilityIssues = function(){
    	// Detecting IE
    	function isIE () {
    		  var myNav = navigator.userAgent.toLowerCase();
    		  return (myNav.indexOf('msie') != -1) ? parseInt(myNav.split('msie')[1]) : false;
    	}

    	/* Add trim() function for IE*/
    	if(typeof String.prototype.trim !== 'function') {
    		  String.prototype.trim = function() {
    		    return this.replace(/^\s+|\s+$/g, '');
    		  }
    	}

    	/* Polyfill for startsWith() - IE 8 and earlier */
    	if (!String.prototype.startsWith) {
    		  String.prototype.startsWith = function(searchString, position) {
    		    position = position || 0;
    		    return this.indexOf(searchString, position) === position;
    		  };
    	}

    	/* Polyfill for endsWith() - IE 8 and earlier */
    	if (!String.prototype.endsWith) {
    		  String.prototype.endsWith = function(searchString, position) {
    		      var subjectString = this.toString();
    		      if (typeof position !== 'number' || !isFinite(position) || Math.floor(position) !== position || position > subjectString.length) {
    		        position = subjectString.length;
    		      }
    		      position -= searchString.length;
    		      var lastIndex = subjectString.indexOf(searchString, position);
    		      return lastIndex !== -1 && lastIndex === position;
    		  };
    	}

    	/* POlyfill for Array.isArray() - IE 8 and earlier */
    	if (!Array.isArray) {
    		  Array.isArray = function(arg) {
    		    return Object.prototype.toString.call(arg) === '[object Array]';
    		  };
    	}

    	/**
    	 * Protect window.console method calls, e.g. console is not defined on IE
    	 * unless dev tools are open, and IE doesn't define console.debug
    	 */
    	(function() {
    	  if (!window.console) {
    	    window.console = {};
    	  }
    	  // union of Chrome, FF, IE, and Safari console methods
    	  var m = [
    	    "log", "info", "warn", "error", "debug", "trace", "dir", "group",
    	    "groupCollapsed", "groupEnd", "time", "timeEnd", "profile", "profileEnd",
    	    "dirxml", "assert", "count", "markTimeline", "timeStamp", "clear"
    	  ];
    	  // define undefined methods as noops to prevent errors
    	  for (var i = 0; i < m.length; i++) {
    	    if (!window.console[m[i]]) {
    	      window.console[m[i]] = function() {};
    	    }
    	  }
    	})();

    	//Add a polyfill for the .map() function for arrays for IE 8. Taken from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
    	// Production steps of ECMA-262, Edition 5, 15.4.4.19
    	// Reference: http://es5.github.io/#x15.4.4.19
    	if (!Array.prototype.map) {

    	  Array.prototype.map = function(callback, thisArg) {

    	    var T, A, k;

    	    if (this == null) {
    	      throw new TypeError(" this is null or not defined");
    	    }

    	    // 1. Let O be the result of calling ToObject passing the |this|
    	    //    value as the argument.
    	    var O = Object(this);

    	    // 2. Let lenValue be the result of calling the Get internal
    	    //    method of O with the argument "length".
    	    // 3. Let len be ToUint32(lenValue).
    	    var len = O.length >>> 0;

    	    // 4. If IsCallable(callback) is false, throw a TypeError exception.
    	    // See: http://es5.github.com/#x9.11
    	    if (typeof callback !== "function") {
    	      throw new TypeError(callback + " is not a function");
    	    }

    	    // 5. If thisArg was supplied, let T be thisArg; else let T be undefined.
    	    if (arguments.length > 1) {
    	      T = thisArg;
    	    }

    	    // 6. Let A be a new array created as if by the expression new Array(len)
    	    //    where Array is the standard built-in constructor with that name and
    	    //    len is the value of len.
    	    A = new Array(len);

    	    // 7. Let k be 0
    	    k = 0;

    	    // 8. Repeat, while k < len
    	    while (k < len) {

    	      var kValue, mappedValue;

    	      // a. Let Pk be ToString(k).
    	      //   This is implicit for LHS operands of the in operator
    	      // b. Let kPresent be the result of calling the HasProperty internal
    	      //    method of O with argument Pk.
    	      //   This step can be combined with c
    	      // c. If kPresent is true, then
    	      if (k in O) {

    	        // i. Let kValue be the result of calling the Get internal
    	        //    method of O with argument Pk.
    	        kValue = O[k];

    	        // ii. Let mappedValue be the result of calling the Call internal
    	        //     method of callback with T as the this value and argument
    	        //     list containing kValue, k, and O.
    	        mappedValue = callback.call(T, kValue, k, O);

    	        // iii. Call the DefineOwnProperty internal method of A with arguments
    	        // Pk, Property Descriptor
    	        // { Value: mappedValue,
    	        //   Writable: true,
    	        //   Enumerable: true,
    	        //   Configurable: true },
    	        // and false.

    	        // In browsers that support Object.defineProperty, use the following:
    	        // Object.defineProperty(A, k, {
    	        //   value: mappedValue,
    	        //   writable: true,
    	        //   enumerable: true,
    	        //   configurable: true
    	        // });

    	        // For best browser support, use the following:
    	        A[k] = mappedValue;
    	      }
    	      // d. Increase k by 1.
    	      k++;
    	    }

    	    // 9. return A
    	    return A;
    	  };
    	}

    	// Polyfill for Array function foreach() - from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach#Polyfill
    	// Production steps of ECMA-262, Edition 5, 15.4.4.18
    	// Reference: http://es5.github.io/#x15.4.4.18
    	if (!Array.prototype.forEach) {

    	  Array.prototype.forEach = function(callback, thisArg) {

    	    var T, k;

    	    if (this == null) {
    	      throw new TypeError(' this is null or not defined');
    	    }

    	    // 1. Let O be the result of calling ToObject passing the |this| value as the argument.
    	    var O = Object(this);

    	    // 2. Let lenValue be the result of calling the Get internal method of O with the argument "length".
    	    // 3. Let len be ToUint32(lenValue).
    	    var len = O.length >>> 0;

    	    // 4. If IsCallable(callback) is false, throw a TypeError exception.
    	    // See: http://es5.github.com/#x9.11
    	    if (typeof callback !== "function") {
    	      throw new TypeError(callback + ' is not a function');
    	    }

    	    // 5. If thisArg was supplied, let T be thisArg; else let T be undefined.
    	    if (arguments.length > 1) {
    	      T = thisArg;
    	    }

    	    // 6. Let k be 0
    	    k = 0;

    	    // 7. Repeat, while k < len
    	    while (k < len) {

    	      var kValue;

    	      // a. Let Pk be ToString(k).
    	      //   This is implicit for LHS operands of the in operator
    	      // b. Let kPresent be the result of calling the HasProperty internal method of O with argument Pk.
    	      //   This step can be combined with c
    	      // c. If kPresent is true, then
    	      if (k in O) {

    	        // i. Let kValue be the result of calling the Get internal method of O with argument Pk.
    	        kValue = O[k];

    	        // ii. Call the Call internal method of callback with T as the this value and
    	        // argument list containing kValue, k, and O.
    	        callback.call(T, kValue, k, O);
    	      }
    	      // d. Increase k by 1.
    	      k++;
    	    }
    	    // 8. return undefined
    	  };
    	}

    	// Polyfill for Object.keys()
    	// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
    	if (!Object.keys) {
    	  Object.keys = (function() {
    	    'use strict';
    	    var hasOwnProperty = Object.prototype.hasOwnProperty,
    	        hasDontEnumBug = !({ toString: null }).propertyIsEnumerable('toString'),
    	        dontEnums = [
    	          'toString',
    	          'toLocaleString',
    	          'valueOf',
    	          'hasOwnProperty',
    	          'isPrototypeOf',
    	          'propertyIsEnumerable',
    	          'constructor'
    	        ],
    	        dontEnumsLength = dontEnums.length;

    	    return function(obj) {
    	      if (typeof obj !== 'object' && (typeof obj !== 'function' || obj === null)) {
    	        throw new TypeError('Object.keys called on non-object');
    	      }

    	      var result = [], prop, i;

    	      for (prop in obj) {
    	        if (hasOwnProperty.call(obj, prop)) {
    	          result.push(prop);
    	        }
    	      }

    	      if (hasDontEnumBug) {
    	        for (i = 0; i < dontEnumsLength; i++) {
    	          if (hasOwnProperty.call(obj, dontEnums[i])) {
    	            result.push(dontEnums[i]);
    	          }
    	        }
    	      }
    	      return result;
    	    };
    	  }());
    	}

        // Polyfill for Array.indexOf
        // Taken from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf#Polyfill
        // Production steps of ECMA-262, Edition 5, 15.4.4.14
        // Reference: http://es5.github.io/#x15.4.4.14
        if (!Array.prototype.indexOf) {
          Array.prototype.indexOf = function(searchElement, fromIndex) {

            var k;

            // 1. Let o be the result of calling ToObject passing
            //    the this value as the argument.
            if (this == null) {
              throw new TypeError('"this" is null or not defined');
            }

            var o = Object(this);

            // 2. Let lenValue be the result of calling the Get
            //    internal method of o with the argument "length".
            // 3. Let len be ToUint32(lenValue).
            var len = o.length >>> 0;

            // 4. If len is 0, return -1.
            if (len === 0) {
              return -1;
            }

            // 5. If argument fromIndex was passed let n be
            //    ToInteger(fromIndex); else let n be 0.
            var n = fromIndex | 0;

            // 6. If n >= len, return -1.
            if (n >= len) {
              return -1;
            }

            // 7. If n >= 0, then Let k be n.
            // 8. Else, n<0, Let k be len - abs(n).
            //    If k is less than 0, then let k be 0.
            k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);

            // 9. Repeat, while k < len
            while (k < len) {
              // a. Let Pk be ToString(k).
              //   This is implicit for LHS operands of the in operator
              // b. Let kPresent be the result of calling the
              //    HasProperty internal method of o with argument Pk.
              //   This step can be combined with c
              // c. If kPresent is true, then
              //    i.  Let elementK be the result of calling the Get
              //        internal method of o with the argument ToString(k).
              //   ii.  Let same be the result of applying the
              //        Strict Equality Comparison Algorithm to
              //        searchElement and elementK.
              //  iii.  If same is true, return k.
              if (k in o && o[k] === searchElement) {
                return k;
              }
              k++;
            }
            return -1;
          };
        }

        //Polyfill for NodeList.forEach, which isn't supported in IE at all, or Edge before v16.
        // https://developer.mozilla.org/en-US/docs/Web/API/NodeList/forEach#Polyfill
        if (window.NodeList && !NodeList.prototype.forEach) {
          NodeList.prototype.forEach = Array.prototype.forEach;
        }

        //Polyfill for Object.assign()
        if (typeof Object.assign != 'function') {
          // Must be writable: true, enumerable: false, configurable: true
          Object.defineProperty(Object, "assign", {
            value: function assign(target, varArgs) { // .length of function is 2
              'use strict';
              if (target == null) { // TypeError if undefined or null
                throw new TypeError('Cannot convert undefined or null to object');
              }

              var to = Object(target);

              for (var index = 1; index < arguments.length; index++) {
                var nextSource = arguments[index];

                if (nextSource != null) { // Skip over if undefined or null
                  for (var nextKey in nextSource) {
                    // Avoid bugs when hasOwnProperty is shadowed
                    if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
                      to[nextKey] = nextSource[nextKey];
                    }
                  }
                }
              }
              return to;
            },
            writable: true,
            configurable: true
          });
        }

        //Polyfill for Array.includes, taken from https://github.com/kevlatus/polyfill-array-includes#readme
    	Array.prototype.includes||Object.defineProperty(Array.prototype,"includes",{value:function(r,e){if(null==this)throw new TypeError('"this" is null or not defined');var t=Object(this),n=t.length>>>0;if(0===n)return!1;var i,o,a=0|e,u=Math.max(a>=0?a:n-Math.abs(a),0);for(;u<n;){if((i=t[u])===(o=r)||"number"==typeof i&&"number"==typeof o&&isNaN(i)&&isNaN(o))return!0;u++}return!1}});

    	// Polyfill
    	// This Polyfill emulates the Math.log2 function.
    	if (!Math.log2) Math.log2 = function(x) {
    		return Math.log(x) * Math.LOG2E;
    	}

      //Add a function to parse ISO date strings for IE8 and other older browsers
      (function(){
          var D= new Date('2011-06-02T09:34:29+02:00');
          if(!D || +D!== 1307000069000){
              Date.fromISO= function(s){
                  var day, tz,
                  rx=/^(\d{4}\-\d\d\-\d\d([tT ][\d:\.]*)?)([zZ]|([+\-])(\d\d):(\d\d))?$/,
                  p= rx.exec(s) || [];
                  if(p[1]){
                      day= p[1].split(/\D/);
                      for(var i= 0, L= day.length; i<L; i++){
                          day[i]= parseInt(day[i], 10) || 0;
                      };
                      day[1]-= 1;
                      day= new Date(Date.UTC.apply(Date, day));
                      if(!day.getDate()) return NaN;
                      if(p[5]){
                          tz= (parseInt(p[5], 10)*60);
                          if(p[6]) tz+= parseInt(p[6], 10);
                          if(p[4]== '+') tz*= -1;
                          if(tz) day.setUTCMinutes(day.getUTCMinutes()+ tz);
                      }
                      return day;
                  }
                  return NaN;
              }
          }
          else{
              Date.fromISO= function(s){
                  return new Date(s);
              }
          }
      })();
    }
    MetacatUI.preventCompatibilityIssues();

    /**
    * @name AppConfig
    * @class AppConfig
    * @classdesc An object that contains the configuration for this MetacatUI application.
      These values are set directly on the AppModel when it is initialized and can be accessed
      from anywhere in the application through the AppModel. (e.g. `MetacatUI.appModel.get("customAttribute")`` )
    */
    MetacatUI.AppConfig = MetacatUI.AppConfig || {};

    MetacatUI.loadTheme();