+// GeoRssOverlay: GMaps API extension to display a group of markers from
+// a RSS feed
+//
+// Copyright 2006 Mikel Maron (email: mikel_maron yahoo com)
+//
+// The original version of this code is called MGeoRSS and can be found
+// at the following address:
+// http://brainoff.com/gmaps/mgeorss.html
+//
+// Modified by Andrew Turner to add support for the GeoRss Simple vocabulary
+//
+// Modified and bundled with YM4R in accordance with the following
+// license:
+//
+// This work is public domain
+
+function GeoRssOverlay(rssurl,icon,proxyurl,options){
+ this.rssurl = rssurl;
+ this.icon = icon;
+ this.proxyurl = proxyurl;
+ if(options['visible'] == undefined)
+ this.visible = true;
+ else
+ this.visible = options['visible'];
+ this.listDiv = options['listDiv']; //ID of the item list DIV
+ this.contentDiv = options['contentDiv']; //ID of the content DIV
+ this.listItemClass = options['listItemClass']; //Class of the list item DIV
+ this.limitItems = options['limit']; //Maximum number of displayed entries
+ this.request = false;
+ this.markers = [];
+}
+
+GeoRssOverlay.prototype = new GOverlay();
+
+GeoRssOverlay.prototype.initialize=function(map) {
+ this.map = map;
+ this.load();
+}
+
+GeoRssOverlay.prototype.redraw = function(force){
+ //nothing to do : the markers are already taken care of
+}
+
+GeoRssOverlay.prototype.remove = function(){
+ for(var i= 0, len = this.markers.length ; i< len; i++){
+ this.map.removeOverlay(this.markers[i]);
+ }
+}
+
+GeoRssOverlay.prototype.showHide=function() {
+ if (this.visible) {
+ for (var i=0;i<this.markers.length;i++) {
+ this.map.removeOverlay(this.markers[i]);
+ }
+ this.visible = false;
+ } else {
+ for (var i=0;i<this.markers.length;i++) {
+ this.map.addOverlay(this.markers[i]);
+ }
+ this.visible = true;
+ }
+}
+
+GeoRssOverlay.prototype.showMarker = function(id){
+ var marker = this.markers[id];
+ if(marker != undefined){
+ GEvent.trigger(marker,"click");
+ }
+}
+
+GeoRssOverlay.prototype.copy = function(){
+ var oCopy = new GeoRssOVerlay(this.rssurl,this.icon,this.proxyurl);
+ oCopy.markers = [];
+ for(var i = 0 , len = this.markers.length ;i < len ; i++){
+ oCopy.markers.push(this.markers[i].copy());
+ }
+ return oCopy;
+}
+
+GeoRssOverlay.prototype.load=function() {
+ if (this.request != false) {
+ return;
+ }
+ this.request = GXmlHttp.create();
+ if (this.proxyurl != undefined) {
+ this.request.open("GET",this.proxyurl + '?q=' + encodeURIComponent(this.rssurl),true);
+ } else {
+ this.request.open("GET",this.rssurl, true);
+ }
+ var m = this;
+ this.request.onreadystatechange = function() {
+ m.callback();
+ }
+ this.request.send(null);
+}
+
+GeoRssOverlay.prototype.callback = function() {
+ if (this.request.readyState == 4) {
+ if (this.request.status == "200") {
+ var xmlDoc = this.request.responseXML;
+ if(xmlDoc.documentElement.getElementsByTagName("item").length != 0){
+ //RSS
+ var items = xmlDoc.documentElement.getElementsByTagName("item");
+ }else if(xmlDoc.documentElement.getElementsByTagName("entry").length != 0){
+ //Atom
+ var items = xmlDoc.documentElement.getElementsByTagName("entry");
+ }
+ for (var i = 0, len = this.limitItems?Math.min(this.limitItems,items.length):items.length; i < len; i++) {
+ try {
+ var marker = this.createMarker(items[i],i);
+ this.markers.push(marker);
+ if(this.visible){
+ this.map.addOverlay(marker);
+ }
+ } catch (e) {
+ }
+ }
+ }
+ this.request = false;
+ }
+}
+
+GeoRssOverlay.prototype.createMarker = function(item,index) {
+
+ var title = item.getElementsByTagName("title")[0].childNodes[0].nodeValue;
+ if(item.getElementsByTagName("description").length != 0){
+ //Rss
+ var description = item.getElementsByTagName("description")[0].childNodes[0].nodeValue;
+ var link = item.getElementsByTagName("link")[0].childNodes[0].nodeValue; }else if(item.getElementsByTagName("summary").length != 0){
+ //Atom
+ var description = item.getElementsByTagName("summary")[0].childNodes[0].nodeValue;
+ var link = item.getElementsByTagName("link")[0].attributes[0].nodeValue;
+ }
+ /* namespaces are handled by spec in moz, not in ie */
+ if (navigator.userAgent.toLowerCase().indexOf("msie") < 0) {
+ if(item.getElementsByTagNameNS("http://www.w3.org/2003/01/geo/wgs84_pos#","lat").length != 0){
+ //W3C Geo Vocabulary
+ var lat = item.getElementsByTagNameNS("http://www.w3.org/2003/01/geo/wgs84_pos#","lat")[0].childNodes[0].nodeValue;
+ var lng = item.getElementsByTagNameNS("http://www.w3.org/2003/01/geo/wgs84_pos#","long")[0].childNodes[0].nodeValue;
+ }else if(item.getElementsByTagNameNS("http://www.georss.org/georss","point").length != 0){
+
+ //Simple
+ var latlng = item.getElementsByTagNameNS("http://www.georss.org/georss","point")[0].childNodes[0].nodeValue.split(" ");
+ var lat = latlng[0];
+ var lng = latlng[1];
+ }
+ } else {
+
+ if(item.getElementsByTagName("geo:lat").length != 0){
+ //W3C Geo Vocabulary
+ var lat = item.getElementsByTagName("geo:lat")[0].childNodes[0].nodeValue;
+ var lng = item.getElementsByTagName("geo:long")[0].childNodes[0].nodeValue;
+ }else if(item.getElementsByTagName("georss:point").length != 0){
+ //Simple
+ var latlng = item.getElementsByTagName("georss:point")[0].childNodes[0].nodeValue.split(" ");
+ var lat = latlng[0];
+ var lng = latlng[1];
+ }
+ }
+
+ var point = new GLatLng(parseFloat(lat), parseFloat(lng));
+ var marker = new GMarker(point,{'title': title});
+ var html = "<a href=\"" + link + "\">" + title + "</a><p/>" + description;
+
+ if(this.contentDiv == undefined){
+ GEvent.addListener(marker, "click", function() {
+ marker.openInfoWindowHtml(html);
+ });
+ }else{
+ var contentDiv = this.contentDiv;
+ GEvent.addListener(marker, "click", function() {
+ document.getElementById(contentDiv).innerHTML = html;
+ });
+ }
+
+ if(this.listDiv != undefined){
+ var a = document.createElement('a');
+ a.innerHTML = title;
+ a.setAttribute("href","#");
+ var georss = this;
+ a.onclick = function(){
+ georss.showMarker(index);
+ return false;
+ };
+ var div = document.createElement('div');
+ if(this.listItemClass != undefined){
+ div.setAttribute("class",this.listItemClass);
+ }
+ div.appendChild(a);
+ document.getElementById(this.listDiv).appendChild(div);
+ }
+
+ return marker;
+}
projects / selectricity-live / blobdiff