// JavaScript Document
google.load("feeds", "1"); //Load Google Ajax Feed API (version 1)
//google.setOnLoadCallback(LoadFeedControl);

function rssdisplayer(divid, url, feedlimit, showoptions){
	this.showoptions = showoptions || ""; //get string of options to show ("date" and/or "description")
	var feedpointer = new google.feeds.Feed(url); //create new instance of Google Ajax Feed API
	feedpointer.setNumEntries(feedlimit); //set number of items to display
	document.write('<div id="' + divid + '">Loading news...</div>');
	this.feedcontainer = document.getElementById(divid);
	var displayer = this;
	feedpointer.load(function(r) { displayer.formatoutput(r)}); //call Feed.load() to retrieve and output RSS feed
}

rssdisplayer.prototype.formatdate=function(datestr) {
	var itemdate = new Date(datestr);
	var entrydatestr = ' ' + (itemdate.getMonth() + 1) + "/" + itemdate.getDate() + "/" + itemdate.getFullYear();

	return "<span class='listdate'>" + entrydatestr + ": </span>";
}

rssdisplayer.prototype.formatoutput=function(result) {
	if (!result.error){ //if RSS feed successfully fetched
		var thefeeds=result.feed.entries; //get all feed entries as a JSON array
		var rssoutput="<ul>";
	
		for (var i=0; i<thefeeds.length; i++) { //loop through entries
			var itemdate=/date/i.test(this.showoptions) ? this.formatdate(thefeeds[i].publishedDate) : "";
			var itemtitle="<a href=\"" + thefeeds[i].link + "\">" + thefeeds[i].title + "</a>";
			var itemdescription=/description/i.test(this.showoptions) ? thefeeds[i].content : /snippet/i.test(this.showoptions)? thefeeds[i].contentSnippet  : "";
			
			rssoutput += "<li>" + itemdate + itemtitle + "<br />" + itemdescription + "</li>";
		}
	
		rssoutput += "</ul>";
	
		this.feedcontainer.innerHTML=rssoutput;
	
	} else {//else, output error
		alert("Error fetching feeds: " + result.error.message);
	}
}
//USAGE SYNTAX: new rssdisplayer("divid", "rssurl", numberofitems, "displayoptions")
//new rssdisplayer("adiv", "http://www.cssdrive.com/index.php/news/rss_2.0/", 5, "date, description")