/
geoxml3.js
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/
geoxml3.js
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/**
* @fileOverview Renders KML on the Google Maps JavaScript API Version 3
* @name GeoXML3
* @author Sterling Udell, Larry Ross, Brendan Byrd
* @see http://code.google.com/p/geoxml3/
*
* geoxml3.js
*
* Renders KML on the Google Maps JavaScript API Version 3
* http://code.google.com/p/geoxml3/
*
* Copyright 2010 Sterling Udell, Larry Ross
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
if (!String.prototype.trim) {
/**
* Remove leading and trailing whitespace.
*
* @augments String
* @return {String}
*/
String.prototype.trim = function () {
return this.replace(/^\s+|\s+$/g, '');
};
}
/**
* @namespace The GeoXML3 namespace.
*/
geoXML3 = window.geoXML3 || {instances: []};
/**
* Constructor for the root KML parser object.
*
* <p>All top-level objects and functions are declared under a namespace of geoXML3.
* The core object is geoXML3.parser; typically, you'll instantiate a one parser
* per map.</p>
*
* @class Main XML parser.
* @param {geoXML3.parserOptions} options
*/
geoXML3.parser = function (options) {
// Inherit from Google MVC Object to include event handling
google.maps.MVCObject.call(this);
// Private variables
var parserOptions = new geoXML3.parserOptions(options);
var docs = []; // Individual KML documents
var docsByUrl = {}; // Same docs as an hash by cleanURL
var kmzMetaData = {}; // Extra files from KMZ data
var styles = {}; // Global list of styles
var lastPlacemark;
var parserName;
if (!parserOptions.infoWindow && parserOptions.singleInfoWindow)
parserOptions.infoWindow = new google.maps.InfoWindow();
var parseKmlString = function (kmlString, docSet) {
// Internal values for the set of documents as a whole
var internals = {
parser: this,
docSet: docSet || [],
remaining: 1,
parseOnly: !(parserOptions.afterParse || parserOptions.processStyles)
};
thisDoc = new Object();
thisDoc.internals = internals;
internals.docSet.push(thisDoc);
render(geoXML3.xmlParse(kmlString),thisDoc);
}
var parse = function (urls, docSet) {
// Process one or more KML documents
if (!parserName) {
parserName = 'geoXML3.instances[' + (geoXML3.instances.push(this) - 1) + ']';
}
if (typeof urls === 'string') {
// Single KML document
urls = [urls];
}
// Internal values for the set of documents as a whole
var internals = {
parser: this,
docSet: docSet || [],
remaining: urls.length,
parseOnly: !(parserOptions.afterParse || parserOptions.processStyles)
};
var thisDoc, j;
for (var i = 0; i < urls.length; i++) {
var baseUrl = cleanURL(defileURL(location.pathname), urls[i]);
if (docsByUrl[baseUrl]) {
// Reloading an existing document
thisDoc = docsByUrl[baseUrl];
thisDoc.reload = true;
}
else {
thisDoc = new Object();
thisDoc.baseUrl = baseUrl;
internals.docSet.push(thisDoc);
}
thisDoc.url = urls[i];
thisDoc.internals = internals;
fetchDoc(thisDoc.url, thisDoc);
}
};
function fetchDoc(url, doc, resFunc) {
resFunc = resFunc || function (responseXML) { render(responseXML, doc); };
if (typeof ZipFile === 'function' && typeof JSIO === 'object' && typeof JSIO.guessFileType === 'function') { // KMZ support requires these modules loaded
contentType = JSIO.guessFileType(doc.baseUrl);
if (contentType == JSIO.FileType.Binary || contentType == JSIO.FileType.Unknown) {
doc.isCompressed = true;
doc.baseDir = doc.baseUrl + '/';
geoXML3.fetchZIP(url, resFunc, doc.internals.parser);
return;
}
}
doc.isCompressed = false;
doc.baseDir = defileURL(doc.baseUrl);
geoXML3.fetchXML(url, resFunc);
}
var hideDocument = function (doc) {
if (!doc) doc = docs[0];
// Hide the map objects associated with a document
var i;
if (!!doc.markers) {
for (i = 0; i < doc.markers.length; i++) {
if(!!doc.markers[i].infoWindow) doc.markers[i].infoWindow.close();
doc.markers[i].setVisible(false);
}
}
if (!!doc.ggroundoverlays) {
for (i = 0; i < doc.ggroundoverlays.length; i++) {
doc.ggroundoverlays[i].setOpacity(0);
}
}
if (!!doc.gpolylines) {
for (i=0;i<doc.gpolylines.length;i++) {
if(!!doc.gpolylines[i].infoWindow) doc.gpolylines[i].infoWindow.close();
doc.gpolylines[i].setMap(null);
}
}
if (!!doc.gpolygons) {
for (i=0;i<doc.gpolygons.length;i++) {
if(!!doc.gpolygons[i].infoWindow) doc.gpolygons[i].infoWindow.close();
doc.gpolygons[i].setMap(null);
}
}
};
var showDocument = function (doc) {
if (!doc) doc = docs[0];
// Show the map objects associated with a document
var i;
if (!!doc.markers) {
for (i = 0; i < doc.markers.length; i++) {
doc.markers[i].setVisible(true);
}
}
if (!!doc.ggroundoverlays) {
for (i = 0; i < doc.ggroundoverlays.length; i++) {
doc.ggroundoverlays[i].setOpacity(doc.ggroundoverlays[i].percentOpacity_);
}
}
if (!!doc.gpolylines) {
for (i=0;i<doc.gpolylines.length;i++) {
doc.gpolylines[i].setMap(parserOptions.map);
}
}
if (!!doc.gpolygons) {
for (i=0;i<doc.gpolygons.length;i++) {
doc.gpolygons[i].setMap(parserOptions.map);
}
}
};
var defaultStyle = {
balloon: {
bgColor: 'ffffffff',
textColor: 'ff000000',
text: "<h3>$[name]</h3>\n<div>$[description]</div>\n<div>$[geDirections]</div>",
displayMode: 'default'
},
icon: {
scale: 1.0,
dim: {
x: 0,
y: 0,
w: -1,
h: -1
},
hotSpot: {
x: 0.5,
y: 0.5,
xunits: 'fraction',
yunits: 'fraction'
}
},
line: {
color: 'ffffffff', // white (KML default)
colorMode: 'normal',
width: 1.0
},
poly: {
color: 'ffffffff', // white (KML default)
colorMode: 'normal',
fill: true,
outline: true
}
};
var kmlNS = 'http://www.opengis.net/kml/2.2';
var gxNS = 'http://www.google.com/kml/ext/2.2';
var nodeValue = geoXML3.nodeValue;
var getBooleanValue = geoXML3.getBooleanValue;
var getElementsByTagNameNS = geoXML3.getElementsByTagNameNS;
var getElementsByTagName = geoXML3.getElementsByTagName;
function processStyleUrl(node) {
var styleUrlStr = nodeValue(getElementsByTagName(node, 'styleUrl')[0]);
if (!!styleUrlStr && styleUrlStr.indexOf('#') != -1)
var styleUrl = styleUrlStr.split('#');
else var styleUrl = ["",""];
return styleUrl;
}
function processStyle(thisNode, baseUrl, styleID, baseDir) {
var style = (baseUrl === '{inline}') ? clone(defaultStyle) : (styles[baseUrl][styleID] = styles[baseUrl][styleID] || clone(defaultStyle));
var styleNodes = getElementsByTagName(thisNode, 'BalloonStyle');
if (!!styleNodes && styleNodes.length > 0) {
style.balloon.bgColor = nodeValue(getElementsByTagName(styleNodes[0], 'bgColor')[0], style.balloon.bgColor);
style.balloon.textColor = nodeValue(getElementsByTagName(styleNodes[0], 'textColor')[0], style.balloon.textColor);
style.balloon.text = nodeValue(getElementsByTagName(styleNodes[0], 'text')[0], style.balloon.text);
style.balloon.displayMode = nodeValue(getElementsByTagName(styleNodes[0], 'displayMode')[0], style.balloon.displayMode);
}
// style.list = (unsupported; doesn't make sense in Google Maps)
var styleNodes = getElementsByTagName(thisNode, 'IconStyle');
if (!!styleNodes && styleNodes.length > 0) {
var icon = style.icon;
icon.scale = parseFloat(nodeValue(getElementsByTagName(styleNodes[0], 'scale')[0], icon.scale));
// style.icon.heading = (unsupported; not supported in API)
// style.icon.color = (unsupported; not supported in API)
// style.icon.colorMode = (unsupported; not supported in API)
styleNodes = getElementsByTagName(thisNode, 'Icon');
if (!!styleNodes && styleNodes.length > 0) {
icon.href = nodeValue(getElementsByTagName(styleNodes[0], 'href')[0]);
icon.url = cleanURL(baseDir, icon.href);
// Detect images buried in KMZ files (and use a base64 encoded URL)
if (kmzMetaData[icon.url]) icon.url = kmzMetaData[icon.url].dataUrl;
// Support for icon palettes and exact size dimensions
icon.dim = {
x: parseInt(nodeValue(getElementsByTagNameNS(styleNodes[0], gxNS, 'x')[0], icon.dim.x)),
y: parseInt(nodeValue(getElementsByTagNameNS(styleNodes[0], gxNS, 'y')[0], icon.dim.y)),
w: parseInt(nodeValue(getElementsByTagNameNS(styleNodes[0], gxNS, 'w')[0], icon.dim.w)),
h: parseInt(nodeValue(getElementsByTagNameNS(styleNodes[0], gxNS, 'h')[0], icon.dim.h))
};
styleNodes = getElementsByTagName(thisNode, 'hotSpot');
if (!!styleNodes && styleNodes.length > 0) {
icon.hotSpot = {
x: styleNodes[0].getAttribute('x'),
y: styleNodes[0].getAttribute('y'),
xunits: styleNodes[0].getAttribute('xunits'),
yunits: styleNodes[0].getAttribute('yunits')
};
}
// certain occasions where we need the pixel size of the image (like the default settings...)
// (NOTE: Scale is applied to entire image, not just the section of the icon palette. So,
// if we need scaling, we'll need the img dimensions no matter what.)
if ( (icon.dim.w < 0 || icon.dim.h < 0) && (icon.xunits != 'pixels' || icon.yunits == 'fraction') || icon.scale != 1.0) {
// (hopefully, this will load by the time we need it...)
icon.img = new Image();
icon.img.onload = function() {
if (icon.dim.w < 0 || icon.dim.h < 0) {
icon.dim.w = this.width;
icon.dim.h = this.height;
}
};
icon.img.src = icon.url;
// sometimes the file is already cached and it never calls onLoad
if (icon.img.width > 0) {
icon.dim.w = icon.img.width;
icon.dim.h = icon.img.height;
}
}
}
}
// style.label = (unsupported; may be possible but not with API)
styleNodes = getElementsByTagName(thisNode, 'LineStyle');
if (!!styleNodes && styleNodes.length > 0) {
style.line.color = nodeValue(getElementsByTagName(styleNodes[0], 'color')[0], style.line.color);
style.line.colorMode = nodeValue(getElementsByTagName(styleNodes[0], 'colorMode')[0], style.line.colorMode);
style.line.width = nodeValue(getElementsByTagName(styleNodes[0], 'width')[0], style.line.width);
// style.line.outerColor = (unsupported; not supported in API)
// style.line.outerWidth = (unsupported; not supported in API)
// style.line.physicalWidth = (unsupported; unneccesary in Google Maps)
// style.line.labelVisibility = (unsupported; possible to implement)
}
styleNodes = getElementsByTagName(thisNode, 'PolyStyle');
if (!!styleNodes && styleNodes.length > 0) {
style.poly.color = nodeValue( getElementsByTagName(styleNodes[0], 'color')[0], style.poly.color);
style.poly.colorMode = nodeValue( getElementsByTagName(styleNodes[0], 'colorMode')[0], style.poly.colorMode);
style.poly.outline = getBooleanValue(getElementsByTagName(styleNodes[0], 'outline')[0], style.poly.outline);
style.poly.fill = getBooleanValue(getElementsByTagName(styleNodes[0], 'fill')[0], style.poly.fill);
}
return style;
}
// from http://stackoverflow.com/questions/122102/what-is-the-most-efficient-way-to-clone-a-javascript-object
// http://keithdevens.com/weblog/archive/2007/Jun/07/javascript.clone
function clone(obj){
if(obj == null || typeof(obj) != 'object') return obj;
if (obj.cloneNode) return obj.cloneNode(true);
var temp = new obj.constructor();
for(var key in obj) temp[key] = clone(obj[key]);
return temp;
}
function processStyleMap(thisNode, baseUrl, styleID, baseDir) {
var pairs = getElementsByTagName(thisNode, 'Pair');
var map = new Object();
// add each key to the map
for (var pr=0;pr<pairs.length;pr++) {
var pairKey = nodeValue(getElementsByTagName(pairs[pr], 'key')[0]);
var pairStyle = nodeValue(getElementsByTagName(pairs[pr], 'Style')[0]);
var pairStyleUrl = processStyleUrl(pairs[pr]);
var pairStyleBaseUrl = pairStyleUrl[0] ? cleanURL(baseDir, pairStyleUrl[0]) : baseUrl;
var pairStyleID = pairStyleUrl[1];
if (!!pairStyle) {
map[pairKey] = processStyle(pairStyle, pairStyleBaseUrl, pairStyleID);
} else if (!!pairStyleID && !!styles[pairStyleBaseUrl][pairStyleID]) {
map[pairKey] = clone(styles[pairStyleBaseUrl][pairStyleID]);
}
}
if (!!map["normal"]) {
styles[baseUrl][styleID] = clone(map["normal"]);
} else {
styles[baseUrl][styleID] = clone(defaultStyle);
}
if (!!map["highlight"] && !!parserOptions.processStyles) {
processStyleID(map["highlight"]);
}
styles[baseUrl][styleID].map = clone(map);
}
function processPlacemarkCoords(node, tag) {
var parent = getElementsByTagName(node, tag);
var coordListA = [];
for (var i=0; i<parent.length; i++) {
var coordNodes = getElementsByTagName(parent[i], 'coordinates');
if (!coordNodes) {
if (coordListA.length > 0) {
break;
} else {
return [{coordinates: []}];
}
}
for (var j=0; j<coordNodes.length;j++) {
var coords = nodeValue(coordNodes[j]).trim();
coords = coords.replace(/,\s+/g, ',');
var path = coords.split(/\s+/g);
var pathLength = path.length;
var coordList = [];
for (var k = 0; k < pathLength; k++) {
coords = path[k].split(',');
if (!isNaN(coords[0]) && !isNaN(coords[1])) {
coordList.push({
lat: parseFloat(coords[1]),
lng: parseFloat(coords[0]),
alt: parseFloat(coords[2])
});
}
}
coordListA.push({coordinates: coordList});
}
}
return coordListA;
}
var render = function (responseXML, doc) {
// Callback for retrieving a KML document: parse the KML and display it on the map
if (!responseXML) {
// Error retrieving the data
geoXML3.log('Unable to retrieve ' + doc.url);
if (parserOptions.failedParse) parserOptions.failedParse(doc);
doc.failed = true;
return;
} else if (responseXML.parseError && responseXML.parseError.errorCode != 0) {
// IE parse error
var err = responseXML.parseError;
var msg = 'Parse error in line ' + err.line + ', col ' + err.linePos + ' (error code: ' + err.errorCode + ")\n" +
"\nError Reason: " + err.reason +
'Error Line: ' + err.srcText;
geoXML3.log('Unable to retrieve ' + doc.url + ': ' + msg);
if (parserOptions.failedParse) parserOptions.failedParse(doc);
doc.failed = true;
return;
} else if (responseXML.documentElement && responseXML.documentElement.nodeName == 'parsererror') {
// Firefox parse error
geoXML3.log('Unable to retrieve ' + doc.url + ': ' + responseXML.documentElement.childNodes[0].nodeValue);
if (parserOptions.failedParse) parserOptions.failedParse(doc);
doc.failed = true;
return;
} else if (!doc) {
throw 'geoXML3 internal error: render called with null document';
} else { //no errors
var i;
doc.placemarks = [];
doc.groundoverlays = [];
doc.ggroundoverlays = [];
doc.networkLinks = [];
doc.gpolygons = [];
doc.gpolylines = [];
// Check for dependent KML files
var nodes = getElementsByTagName(responseXML, 'styleUrl');
var docSet = doc.internals.docSet;
for (var i = 0; i < nodes.length; i++) {
var url = nodeValue(nodes[i]).split('#')[0];
if (!url) continue; // #id (inside doc)
var rUrl = cleanURL( doc.baseDir, url );
if (rUrl === doc.baseUrl) continue; // self
if (docsByUrl[rUrl]) continue; // already loaded
var thisDoc;
var j = docSet.indexOfObjWithItem('baseUrl', rUrl);
if (j != -1) {
// Already listed to be loaded, but probably in the wrong order.
// Load it right away to immediately resolve dependency.
thisDoc = docSet[j];
if (thisDoc.failed) continue; // failed to load last time; don't retry it again
}
else {
// Not listed at all; add it in
thisDoc = new Object();
thisDoc.url = rUrl; // url can't be trusted inside KMZ files, since it may .. outside of the archive
thisDoc.baseUrl = rUrl;
thisDoc.internals = doc.internals;
doc.internals.docSet.push(thisDoc);
doc.internals.remaining++;
}
// render dependent KML first then re-run renderer
fetchDoc(rUrl, thisDoc, function (thisResXML) {
render(thisResXML, thisDoc);
render(responseXML, doc);
});
// to prevent cross-dependency issues, just load the one
// file first and re-check the rest later
return;
}
// Parse styles
doc.styles = styles[doc.baseUrl] = styles[doc.baseUrl] || {};
var styleID, styleNodes;
nodes = getElementsByTagName(responseXML, 'Style');
nodeCount = nodes.length;
for (i = 0; i < nodeCount; i++) {
thisNode = nodes[i];
var styleID = thisNode.getAttribute('id');
if (!!styleID) processStyle(thisNode, doc.baseUrl, styleID, doc.baseDir);
}
// Parse StyleMap nodes
nodes = getElementsByTagName(responseXML, 'StyleMap');
for (i = 0; i < nodes.length; i++) {
thisNode = nodes[i];
var styleID = thisNode.getAttribute('id');
if (!!styleID) processStyleMap(thisNode, doc.baseUrl, styleID, doc.baseDir);
}
if (!!parserOptions.processStyles || !parserOptions.createMarker) {
// Convert parsed styles into GMaps equivalents
processStyles(doc);
}
// Parse placemarks
if (!!doc.reload && !!doc.markers) {
for (i = 0; i < doc.markers.length; i++) {
doc.markers[i].active = false;
}
}
var placemark, node, coords, path, marker, poly;
var pathLength, marker, polygonNodes, coordList;
var placemarkNodes = getElementsByTagName(responseXML, 'Placemark');
for (pm = 0; pm < placemarkNodes.length; pm++) {
// Init the placemark object
node = placemarkNodes[pm];
var styleUrl = processStyleUrl(node);
placemark = {
name: nodeValue(getElementsByTagName(node, 'name')[0]),
description: nodeValue(getElementsByTagName(node, 'description')[0]),
styleUrl: styleUrl.join('#'),
styleBaseUrl: styleUrl[0] ? cleanURL(doc.baseDir, styleUrl[0]) : doc.baseUrl,
styleID: styleUrl[1],
visibility: getBooleanValue(getElementsByTagName(node, 'visibility')[0], true),
balloonVisibility: getBooleanValue(getElementsByTagNameNS(node, gxNS, 'balloonVisibility')[0], !parserOptions.suppressInfoWindows)
};
placemark.style = (styles[placemark.styleBaseUrl] && styles[placemark.styleBaseUrl][placemark.styleID]) || clone(defaultStyle);
// inline style overrides shared style
var inlineStyles = getElementsByTagName(node, 'Style');
if (inlineStyles && (inlineStyles.length > 0)) {
var style = processStyle(node, '{inline}', '{inline}');
processStyleID(style);
if (style) placemark.style = style;
}
if (/^https?:\/\//.test(placemark.description)) {
placemark.description = ['<a href="', placemark.description, '">', placemark.description, '</a>'].join('');
}
// record list of variables for substitution
placemark.vars = {
display: {
name: 'Name',
description: 'Description',
address: 'Street Address',
id: 'ID',
Snippet: 'Snippet',
geDirections: 'Directions'
},
val: {
name: placemark.name || '',
description: placemark.description || '',
address: nodeValue(getElementsByTagName(node, 'address')[0], ''),
id: node.getAttribute('id') || '',
Snippet: nodeValue(getElementsByTagName(node, 'Snippet')[0], '')
},
directions: [
'f=d',
'source=GeoXML3'
]
};
// add extended data to variables
var extDataNodes = getElementsByTagName(node, 'ExtendedData');
if (!!extDataNodes && extDataNodes.length > 0) {
var dataNodes = getElementsByTagName(extDataNodes[0], 'Data');
for (var d = 0; d < dataNodes.length; d++) {
var dn = dataNodes[d];
var name = dn.getAttribute('name');
if (!name) continue;
var dName = nodeValue(getElementsByTagName(dn, 'displayName')[0], name);
var val = nodeValue(getElementsByTagName(dn, 'value')[0]);
placemark.vars.val[name] = val;
placemark.vars.display[name] = dName;
}
var simpleDataNodes = getElementsByTagName(extDataNodes[0], 'SimpleData');
for (var d = 0; d < simpleDataNodes.length; d++) {
var dn = simpleDataNodes[d];
var name = dn.getAttribute('name');
if (!name) continue;
if (!dn.childNodes[0]) continue;
var val = dn.childNodes[0].nodeValue;
placemark.vars.val[name] = val;
placemark.vars.display[name] = name;
}
}
// process MultiGeometry
var GeometryNodes = getElementsByTagName(node, 'coordinates');
var Geometry = null;
if (!!GeometryNodes && (GeometryNodes.length > 0)) {
for (var gn=0;gn<GeometryNodes.length;gn++) {
if (GeometryNodes[gn].parentNode &&
GeometryNodes[gn].parentNode.nodeName) {
var GeometryPN = GeometryNodes[gn].parentNode;
Geometry = GeometryPN.nodeName;
// Extract the coordinates
// What sort of placemark?
switch(Geometry) {
case "Point":
placemark.Point = processPlacemarkCoords(node, "Point")[0];
placemark.latlng = new google.maps.LatLng(placemark.Point.coordinates[0].lat, placemark.Point.coordinates[0].lng);
pathLength = 1;
break;
case "LinearRing":
// Polygon/line
polygonNodes = getElementsByTagName(node, 'Polygon');
// Polygon
if (!placemark.Polygon)
placemark.Polygon = [{
outerBoundaryIs: {coordinates: []},
innerBoundaryIs: [{coordinates: []}]
}];
for (var pg=0;pg<polygonNodes.length;pg++) {
placemark.Polygon[pg] = {
outerBoundaryIs: {coordinates: []},
innerBoundaryIs: [{coordinates: []}]
}
placemark.Polygon[pg].outerBoundaryIs = processPlacemarkCoords(polygonNodes[pg], "outerBoundaryIs");
placemark.Polygon[pg].innerBoundaryIs = processPlacemarkCoords(polygonNodes[pg], "innerBoundaryIs");
}
coordList = placemark.Polygon[0].outerBoundaryIs;
break;
case "LineString":
pathLength = 0;
placemark.LineString = processPlacemarkCoords(node,"LineString");
break;
default:
break;
}
}
}
}
// call the custom placemark parse function if it is defined
if (!!parserOptions.pmParseFn) parserOptions.pmParseFn(node, placemark);
doc.placemarks.push(placemark);
// single marker
if (placemark.Point) {
if (!!google.maps) {
doc.bounds = doc.bounds || new google.maps.LatLngBounds();
doc.bounds.extend(placemark.latlng);
}
// Potential user-defined marker handler
var pointCreateFunc = parserOptions.createMarker || createMarker;
var found = false;
if (!parserOptions.createMarker) {
// Check to see if this marker was created on a previous load of this document
if (!!doc) {
doc.markers = doc.markers || [];
if (doc.reload) {
for (var j = 0; j < doc.markers.length; j++) {
if (doc.markers[j].getPosition().equals(placemark.latlng)) {
found = doc.markers[j].active = true;
break;
}
}
}
}
}
if (!found) {
// Call the marker creator
var marker = pointCreateFunc(placemark, doc);
if (marker) marker.active = placemark.visibility;
}
}
// polygon/line
var poly, line;
if (!!doc) {
if (placemark.Polygon) doc.gpolygons = doc.gpolygons || [];
if (placemark.LineString) doc.gpolylines = doc.gpolylines || [];
}
var polyCreateFunc = parserOptions.createPolygon || createPolygon;
var lineCreateFunc = parserOptions.createLineString || createPolyline;
if (placemark.Polygon) {
poly = polyCreateFunc(placemark,doc);
if (poly) poly.active = placemark.visibility;
}
if (placemark.LineString) {
line = lineCreateFunc(placemark,doc);
if (line) line.active = placemark.visibility;
}
if (!!google.maps) {
doc.bounds = doc.bounds || new google.maps.LatLngBounds();
if (poly) doc.bounds.union(poly.bounds);
if (line) doc.bounds.union(line.bounds);
}
} // placemark loop
if (!!doc.reload && !!doc.markers) {
for (i = doc.markers.length - 1; i >= 0 ; i--) {
if (!doc.markers[i].active) {
if (!!doc.markers[i].infoWindow) {
doc.markers[i].infoWindow.close();
}
doc.markers[i].setMap(null);
doc.markers.splice(i, 1);
}
}
}
// Parse ground overlays
if (!!doc.reload && !!doc.groundoverlays) {
for (i = 0; i < doc.groundoverlays.length; i++) {
doc.groundoverlays[i].active = false;
}
}
if (!!doc) {
doc.groundoverlays = doc.groundoverlays || [];
}
// doc.groundoverlays =[];
var groundOverlay, color, transparency, overlay;
var groundNodes = getElementsByTagName(responseXML, 'GroundOverlay');
for (i = 0; i < groundNodes.length; i++) {
node = groundNodes[i];
// Detect images buried in KMZ files (and use a base64 encoded URL)
var gnUrl = cleanURL( doc.baseDir, nodeValue(getElementsByTagName(node, 'href')[0]) );
if (kmzMetaData[gnUrl]) gnUrl = kmzMetaData[gnUrl].dataUrl;
// Init the ground overlay object
groundOverlay = {
name: nodeValue(getElementsByTagName(node, 'name')[0]),
description: nodeValue(getElementsByTagName(node, 'description')[0]),
icon: { href: gnUrl },
latLonBox: {
north: parseFloat(nodeValue(getElementsByTagName(node, 'north')[0])),
east: parseFloat(nodeValue(getElementsByTagName(node, 'east')[0])),
south: parseFloat(nodeValue(getElementsByTagName(node, 'south')[0])),
west: parseFloat(nodeValue(getElementsByTagName(node, 'west')[0]))
}
};
if (!!google.maps) {
doc.bounds = doc.bounds || new google.maps.LatLngBounds();
doc.bounds.union(new google.maps.LatLngBounds(
new google.maps.LatLng(groundOverlay.latLonBox.south, groundOverlay.latLonBox.west),
new google.maps.LatLng(groundOverlay.latLonBox.north, groundOverlay.latLonBox.east)
));
}
// Opacity is encoded in the color node
var colorNode = getElementsByTagName(node, 'color');
if (colorNode && colorNode.length > 0) {
groundOverlay.opacity = geoXML3.getOpacity(nodeValue(colorNode[0]));
} else {
groundOverlay.opacity = 1.0; // KML default
}
doc.groundoverlays.push(groundOverlay);
if (!!parserOptions.createOverlay) {
// User-defined overlay handler
parserOptions.createOverlay(groundOverlay, doc);
} else {
// Check to see if this overlay was created on a previous load of this document
var found = false;
if (!!doc) {
doc.groundoverlays = doc.groundoverlays || [];
if (doc.reload) {
overlayBounds = new google.maps.LatLngBounds(
new google.maps.LatLng(groundOverlay.latLonBox.south, groundOverlay.latLonBox.west),
new google.maps.LatLng(groundOverlay.latLonBox.north, groundOverlay.latLonBox.east)
);
var overlays = doc.groundoverlays;
for (i = overlays.length; i--;) {
if ((overlays[i].bounds().equals(overlayBounds)) &&
(overlays.url_ === groundOverlay.icon.href)) {
found = overlays[i].active = true;
break;
}
}
}
}
if (!found) {
// Call the built-in overlay creator
overlay = createOverlay(groundOverlay, doc);
overlay.active = true;
}
}
if (!!doc.reload && !!doc.groundoverlays && !!doc.groundoverlays.length) {
var overlays = doc.groundoverlays;
for (i = overlays.length; i--;) {
if (!overlays[i].active) {
overlays[i].remove();
overlays.splice(i, 1);
}
}
doc.groundoverlays = overlays;
}
}
// Parse network links
var networkLink;
var docPath = document.location.pathname.split('/');
docPath = docPath.splice(0, docPath.length - 1).join('/');
var linkNodes = getElementsByTagName(responseXML, 'NetworkLink');
for (i = 0; i < linkNodes.length; i++) {
node = linkNodes[i];
// Init the network link object
networkLink = {
name: nodeValue(getElementsByTagName(node, 'name')[0]),
link: {
href: nodeValue(getElementsByTagName(node, 'href')[0]),
refreshMode: nodeValue(getElementsByTagName(node, 'refreshMode')[0])
}
};
// Establish the specific refresh mode
if (!networkLink.link.refreshMode) {
networkLink.link.refreshMode = 'onChange';
}
if (networkLink.link.refreshMode === 'onInterval') {
networkLink.link.refreshInterval = parseFloat(nodeValue(getElementsByTagName(node, 'refreshInterval')[0]));
if (isNaN(networkLink.link.refreshInterval)) {
networkLink.link.refreshInterval = 0;
}
} else if (networkLink.link.refreshMode === 'onChange') {
networkLink.link.viewRefreshMode = nodeValue(getElementsByTagName(node, 'viewRefreshMode')[0]);
if (!networkLink.link.viewRefreshMode) {
networkLink.link.viewRefreshMode = 'never';
}
if (networkLink.link.viewRefreshMode === 'onStop') {
networkLink.link.viewRefreshTime = nodeValue(getElementsByTagName(node, 'refreshMode')[0]);
networkLink.link.viewFormat = nodeValue(getElementsByTagName(node, 'refreshMode')[0]);
if (!networkLink.link.viewFormat) {
networkLink.link.viewFormat = 'BBOX=[bboxWest],[bboxSouth],[bboxEast],[bboxNorth]';
}
}
}
if (!/^[\/|http]/.test(networkLink.link.href)) {
// Fully-qualify the HREF
networkLink.link.href = docPath + '/' + networkLink.link.href;
}
// Apply the link
if ((networkLink.link.refreshMode === 'onInterval') &&
(networkLink.link.refreshInterval > 0)) {
// Reload at regular intervals
setInterval(parserName + '.parse("' + networkLink.link.href + '")',
1000 * networkLink.link.refreshInterval);
} else if (networkLink.link.refreshMode === 'onChange') {
if (networkLink.link.viewRefreshMode === 'never') {
// Load the link just once
doc.internals.parser.parse(networkLink.link.href, doc.internals.docSet);
} else if (networkLink.link.viewRefreshMode === 'onStop') {
// Reload when the map view changes
}
}
}
}
if (!!doc.bounds) {
doc.internals.bounds = doc.internals.bounds || new google.maps.LatLngBounds();
doc.internals.bounds.union(doc.bounds);
}
if (!!doc.markers || !!doc.groundoverlays || !!doc.gpolylines || !!doc.gpolygons) {
doc.internals.parseOnly = false;
}
if (!doc.internals.parseOnly) {
// geoXML3 is not being used only as a real-time parser, so keep the processed documents around
if (!docsByUrl[doc.baseUrl]) {
docs.push(doc);
docsByUrl[doc.baseUrl] = doc;
}
else {
// internal replacement, which keeps the same memory ref loc in docs and docsByUrl
for (var i in docsByUrl[doc.baseUrl]) {
docsByUrl[doc.baseUrl][i] = doc[i];
}
}
}
doc.internals.remaining--;
if (doc.internals.remaining === 0) {
// We're done processing this set of KML documents
// Options that get invoked after parsing completes
if (parserOptions.zoom && !!doc.internals.bounds &&
!doc.internals.bounds.isEmpty() && !!parserOptions.map) {
parserOptions.map.fitBounds(doc.internals.bounds);
}
if (parserOptions.afterParse) {
parserOptions.afterParse(doc.internals.docSet);
}
google.maps.event.trigger(doc.internals.parser, 'parsed');
}
};
var kmlColor = function (kmlIn, colorMode) {
var kmlColor = {};
kmlIn = kmlIn || 'ffffffff'; // white (KML 2.2 default)
var aa = kmlIn.substr(0,2);
var bb = kmlIn.substr(2,2);
var gg = kmlIn.substr(4,2);
var rr = kmlIn.substr(6,2);
kmlColor.opacity = parseInt(aa, 16) / 256;
kmlColor.color = (colorMode === 'random') ? randomColor(rr, gg, bb) : '#' + rr + gg + bb;
return kmlColor;
};
// Implemented per KML 2.2 <ColorStyle> specs
var randomColor = function(rr, gg, bb) {
var col = { rr: rr, gg: gg, bb: bb };
for (var k in col) {
var v = col[k];
if (v == null) v = 'ff';
// RGB values are limiters for random numbers (ie: 7f would be a random value between 0 and 7f)
v = Math.round(Math.random() * parseInt(rr, 16)).toString(16);
if (v.length === 1) v = '0' + v;
col[k] = v;
}
return '#' + col.rr + col.gg + col.bb;
};
var processStyleID = function (style) {
var icon = style.icon;
if (!icon.href) return;
if (icon.img && !icon.img.complete && (icon.dim.w < 0) && (icon.dim.h < 0) ) {
// we're still waiting on the image loading (probably because we've been blocking since the declaration)
// so, let's queue this function on the onload stack
icon.markerBacklog = [];
icon.img.onload = function() {
if (icon.dim.w < 0 || icon.dim.h < 0) {
icon.dim.w = this.width;
icon.dim.h = this.height;
}
processStyleID(style);
// we will undoubtedly get some createMarker queuing, so set this up in advance
for (var i = 0; i < icon.markerBacklog.length; i++) {
var p = icon.markerBacklog[i][0];
var d = icon.markerBacklog[i][1];
createMarker(p, d);
if (p.marker) p.marker.active = true;
}
delete icon.markerBacklog;
};
return;
}
else if (icon.dim.w < 0 || icon.dim.h < 0) {
if (icon.img && icon.img.complete) {
// sometimes the file is already cached and it never calls onLoad
icon.dim.w = icon.img.width;
icon.dim.h = icon.img.height;
}
else {
// settle for a default of 32x32
icon.dim.whGuess = true;
icon.dim.w = 32;
icon.dim.h = 32;
}
}
// pre-scaled variables
var rnd = Math.round;
var scaled = {
x: icon.dim.x * icon.scale,
y: icon.dim.y * icon.scale,
w: icon.dim.w * icon.scale,
h: icon.dim.h * icon.scale,
aX: icon.hotSpot.x * icon.scale,
aY: icon.hotSpot.y * icon.scale,
iW: (icon.img ? icon.img.width : icon.dim.w) * icon.scale,
iH: (icon.img ? icon.img.height : icon.dim.h) * icon.scale
};
// Figure out the anchor spot
// Origins, anchor positions and coordinates of the marker increase in the X direction to the right and in
// the Y direction down.
var aX, aY;
switch (icon.hotSpot.xunits) {
case 'fraction': aX = rnd(scaled.aX * icon.dim.w); break;
case 'insetPixels': aX = rnd(icon.dim.w * icon.scale - scaled.aX); break;
default: aX = rnd(scaled.aX); break; // already pixels
}
aY = scaled.h - rnd( ((icon.hotSpot.yunits === 'fraction') ? icon.dim.h : 1) * scaled.aY ); // insetPixels Y = pixels Y
var iconAnchor = new google.maps.Point(aX, aY);