// -------------------------------------------------------------------
// gAjax RSS Feeds Displayer- By Dynamic Drive, available at: http://www.dynamicdrive.com
// Created: July 17th, 2007 Updated: n/a
// -------------------------------------------------------------------
var gfeedfetcher_loading_image = "/Images/Icons/indicator.gif"; //Full URL to "loading" image. No need to config after this line!!
google.load("feeds", "1"); //Load Google Ajax Feed API (version 1)
function gfeedfetcher(divid, divClass, linktarget) {
this.showtitle = true;
this.linktarget = linktarget || ""; //link target of RSS entries
this.feedlabels = []; //array holding lables for each RSS feed
this.feedurls = [];
this.feeds = []; //array holding combined RSS feeds' entries from Feed API (result.feed.entries)
this.feedsfetched = 0; //number of feeds fetched
this.feedlimit = 5;
this.showoptions = ""; //Optional components of RSS entry to show (none by default)
this.sortstring = "date"; //sort by "date" by default
var tmp=document.getElementById(divid);
if (null == tmp || undefined == tmp) { document.write(''); } //output div to contain RSS entries
this.feedcontainer = document.getElementById(divid);
this.itemcontainer = "
"; //default element wrapping around each RSS entry item
}
gfeedfetcher.prototype.addFeed = function(label, url) {
this.feedlabels[this.feedlabels.length] = label;
this.feedurls[this.feedurls.length] = url;
}
gfeedfetcher.prototype.filterfeed = function(feedlimit, sortstr) {
this.feedlimit = feedlimit;
if (typeof sortstr != "undefined")
this.sortstring = sortstr;
}
gfeedfetcher.prototype.displayoptions=function(parts){
this.showoptions=parts //set RSS entry options to show ("date, datetime, time, snippet, label, description")
}
gfeedfetcher.prototype.setentrycontainer=function(containerstr){ //set element that should wrap around each RSS entry item
this.itemcontainer="<"+containerstr.toLowerCase()+">"
}
gfeedfetcher.prototype.init = function() {
this.feedsfetched = 0 //reset number of feeds fetched to 0 (in case init() is called more than once)
this.feeds = [] //reset feeds[] array to empty (in case init() is called more than once)
this.msg = this.feedcontainer.innerHTML;
this.feedcontainer.innerHTML = ' Retrieving RSS feed(s)'
var displayer = this;
for (var i = 0; i < this.feedurls.length; i++) { //loop through the specified RSS feeds' URLs
var feedpointer = new google.feeds.Feed(this.feedurls[i]) //create new instance of Google Ajax Feed API
var items_to_show = (this.feedlimit <= this.feedurls.length) ? 1 : Math.floor(this.feedlimit / this.feedurls.length) //Calculate # of entries to show for each RSS feed
if (this.feedlimit % this.feedurls.length > 0 && this.feedlimit > this.feedurls.length && i == this.feedurls.length - 1) //If this is the last RSS feed, and feedlimit/feedurls.length yields a remainder
items_to_show += (this.feedlimit % this.feedurls.length) //Add that remainder to the number of entries to show for last RSS feed
feedpointer.setNumEntries(items_to_show) //set number of items to display
feedpointer.load(function(r) {
displayer._fetch_data_as_array(r)
}) //call Feed.load() to retrieve and output RSS feed
}
}
gfeedfetcher._formatdate=function(datestr, showoptions){
var itemdate=new Date(datestr)
var parseddate=(showoptions.indexOf("datetime")!=-1)? itemdate.toLocaleString() : (showoptions.indexOf("date")!=-1)? itemdate.toLocaleDateString() : (showoptions.indexOf("time")!=-1)? itemdate.toLocaleTimeString() : ""
return ""+parseddate+""
}
gfeedfetcher._sortarray=function(arr, sortstr){
var sortstr=(sortstr=="label")? "ddlabel" : sortstr //change "label" string (if entered) to "ddlabel" instead, for internal use
if (sortstr=="title" || sortstr=="ddlabel"){ //sort array by "title" or "ddlabel" property of RSS feed entries[]
arr.sort(function(a,b){
var fielda=a[sortstr].toLowerCase()
var fieldb=b[sortstr].toLowerCase()
return (fieldafieldb)? 1 : 0
})
}
else{ //else, sort by "publishedDate" property (using error handling, as "publishedDate" may not be a valid date str if an error has occured while getting feed
try{
arr.sort(function(a,b){return new Date(b.publishedDate)-new Date(a.publishedDate)})
}
catch(err){}
}
}
gfeedfetcher.prototype._fetch_data_as_array = function(result) {
var thisfeed = (!result.error) ? result.feed.entries : "" //get all feed entries as a JSON array or "" if failed
if (thisfeed == "") { //if error has occured fetching feed
this.feedcontainer.innerHTML = this.msg;
//alert("Google Feed API Error: " + result.error.message)
return;
}
for (var i = 0; i < thisfeed.length; i++) //For each entry within feed
result.feed.entries[i].ddlabel = this.feedlabels[this.feedsfetched] //extend it with a "ddlabel" property
this.feeds = this.feeds.concat(thisfeed) //add entry to array holding all feed entries
this._signaldownloadcomplete() //signal the retrieval of this feed as complete (and move on to next one if defined)
}
gfeedfetcher.prototype._signaldownloadcomplete=function(){
this.feedsfetched+=1
if (this.feedsfetched==this.feedurls.length) //if all feeds fetched
this._displayresult(this.feeds) //display results
}
gfeedfetcher.prototype._displayresult = function (feeds) {
var rssoutput = (this.itemcontainer == "
") ? "
\n" : ""
gfeedfetcher._sortarray(feeds, this.sortstring)
for (var i = 0; i < feeds.length; i++) {
var body = '';
if (this._onrender) { body = this._onrender(feeds[i]); }
else{ body = this._render(feeds[i]); }
if (0 < jQuery.trim(body).length) { rssoutput += this.itemcontainer + body + this.itemcontainer.replace("<", "") ? "
" : ""
this.feedcontainer.innerHTML = rssoutput
if (this._done) { this._done(); }
}
gfeedfetcher.prototype._render = function (feed) {
var txt = '';
var itemtitle = "