Converts polygon xml from KML files to BingMaps 7.0 Polygon objects

bingKmlParser.js

var bingKmlParser = function() {

	// private variables
	var _styles = {};
	var _styleMap = {};


	// private methods

	function _parsePolygons(placemarkXml) {
		var vertices;
		$(placemarkXml).find('Polygon').find('coordinates').each(function(index, coordinates) {
			vertices = _parseVertices(coordinates.firstChild.data);
		});

		var colorName = $(placemarkXml).find('styleUrl').contents()[0].data.substr(1);;
		var polygonOptions = _styleMap[colorName];

		var polygon = new Microsoft.Maps.Polygon(vertices, polygonOptions);

		return polygon;
	}

	function _parseVertices(coordinateString) {
		coordinateString = $.trim(coordinateString);
		var coordinates = coordinateString.split(' ');
		var msLocations = [];

		for (i=0; i<coordinates.length; i++) {
			var coordinate = coordinates[i];
			var xyz = coordinate.split(',');

			var location = new Microsoft.Maps.Location(xyz[1],xyz[0],xyz[2]);
			msLocations.push(location);
		}

		return msLocations;
	};

	/**
	 * Parse a KML color string that comes as a abgr hex string.
	 * @param kmlColorString An abgr hex string
	 * @return {Microsoft.Maps.Color}
	 * @private
	 */
	function _parseColor(kmlColorString) {
		// Our KML files have color strings as hex in abgr order. Here we swap them to argb order.
		var hexArray = [kmlColorString.charAt(0) + kmlColorString.charAt(1),
			kmlColorString.charAt(6) + kmlColorString.charAt(7),
			kmlColorString.charAt(4) + kmlColorString.charAt(5),
			kmlColorString.charAt(2) + kmlColorString.charAt(3)];

		var argbArray = [];
		for (i=0; i<hexArray.length; i++) {
			argbArray.push(parseInt(hexArray[i], 16));
		}

		return new Microsoft.Maps.Color(argbArray[0], argbArray[1], argbArray[2], argbArray[3]);
	};

	/**
	 * Create a map of style names to styles (PolygonOptions - http://msdn.microsoft.com/en-us/library/gg427596.aspx).
	 * @param kmlXml
	 * @return {Object} a map of <String, PolygonOptions>
	 * @private
	 */
	function _parseStyles(kmlXml) {
		$(kmlXml).find('Style').each(function(index, styleXml) {
			var styleId = $(styleXml).attr('id');
			var msPolygonOptions = {};

			if ($(styleXml).find('PolyStyle').length > 0) {
				msPolygonOptions.fillColor = _parseColor($(styleXml).find('PolyStyle').find('color').contents()[0].data);
				msPolygonOptions.strokeColor = _parseColor($(styleXml).find('LineStyle').find('color').contents()[0].data);
				msPolygonOptions.strokeThickness = parseInt($(styleXml).find('LineStyle').find('width').contents()[0].data);
			}

			_styles[styleId] = msPolygonOptions;
		});

		$(kmlXml).find('StyleMap').each(function(index, styleMapXml) {
			var styleMapId = $(styleMapXml).attr('id');
			var mappedStyle = $(styleMapXml).find('styleUrl').contents()[0].data.substr(1);

			_styleMap[styleMapId] = _styles[mappedStyle];
		});
	}

	/**
	 * public functions that are available using this object.
	 */
	var _public = {
		parsePolygons: function(kmlXml) {
			var polygons = [];

			_parseStyles(kmlXml);

			$(kmlXml).find('Placemark').each(function(index, placemarkXml) {
				polygons.push(_parsePolygons(placemarkXml));
			});

			return polygons;
		}
	};

	return _public;
}();

Thanks for this Ryan, do you know if this works for IE9 and above? I'm using IE11 and I'm getting errors inside this function:

BingKmlParser.prototype.parseStyles = function (kmlDom) {}