<!--
/* Loads the Google data JavaScript client library */
google.load("gdata", "2.x");

function htmlify(regularText)
{
//var urlRegexp = /(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?/gi;  //works in FF, fails in IE8
var urlRegexp = /(https?:\/\/)([\da-zA-Z\._-]+)\.([A-Za-z\.]{2,6})([\/\w\._-]*)\/?/g; //works in both FF3.6 and IE8
var tmp=regularText;
tmp=tmp.replace(urlRegexp, "<a target='_blank' href='$1$2.$3$4'>$1$2.$3$4</a>"); // replace URLs with actual hyperlinks
//tmp=tmp.replace("\n\r","\n"); // replace newlines/carriage-returns in description with newline only
tmp=tmp.replace("\n\n","<br><br>"); // replace double newlines in description with HTML paragraph
tmp=tmp.replace("\n","<br>"); // replace single newlines in description with HTML break
return tmp;
}

function init() {
  // init the Google data JS client library with an error handler
  google.gdata.client.init(handleGDError);
  // load the code.google.com developer calendar
  loadDeveloperCalendar();
}



/**
 * Adds a leading zero to a single-digit number.  Used for displaying dates.
 */
function padNumber(num) {
  if (num <= 9) {
    return "0" + num;
  }
  return num;
}

/**
 * Determines the full calendarUrl based upon the calendarAddress
 * argument and calls loadCalendar with the calendarUrl value.
 *
 * @param {string} calendarAddress is the email-style address for the calendar
 */ 
function loadCalendarByAddress(calendarAddress) {
  var calendarUrl = 'https://www.google.com/calendar/feeds/' +
                    calendarAddress + 
                    '/public/full';
  loadCalendar(calendarUrl);
}

/**
 * Uses Google data JS client library to retrieve a calendar feed from the specified
 * URL.  The feed is controlled by several query parameters and a callback 
 * function is called to process the feed results.
 *
 * @param {string} calendarUrl is the URL for a public calendar feed
 */  
function loadCalendar(calendarUrl) {
  var service = new 
      google.gdata.calendar.CalendarService('gdata-js-client-samples-simple');
  var query = new google.gdata.calendar.CalendarEventQuery(calendarUrl);
  query.setOrderBy('starttime');
  query.setSortOrder('ascending');
  query.setFutureEvents(true);
  query.setSingleEvents(true);
  query.setMaxResults(7);

  service.getEventsFeed(query, listEvents, handleGDError);
}

/**
 * Callback function for the Google data JS client library to call when an error
 * occurs during the retrieval of the feed.  Details available depend partly
 * on the web browser, but this shows a few basic examples. In the case of
 * a privileged environment using ClientLogin authentication, there may also
 * be an e.type attribute in some cases.
 *
 * @param {Error} e is an instance of an Error 
 */
function handleGDError(e) {
  document.getElementById('jsSourceFinal').setAttribute('style', 
      'display:none');
  if (e instanceof Error) {
    /* alert with the error line number, file and message */
    alert('Error at line ' + e.lineNumber +
          ' in ' + e.fileName + '\n' +
          'Message: ' + e.message);
    /* if available, output HTTP error code and status text */
    if (e.cause) {
      var status = e.cause.status;
      var statusText = e.cause.statusText;
      alert('Root cause: HTTP error ' + status + ' with status text of: ' + 
            statusText);
    }
  } else {
    alert(e.toString());
  }
}

/**
 * Callback function for the Google data JS client library to call with a feed 
 * of events retrieved.
 *
 * Creates an unordered list of events in a human-readable form.  This list of
 * events is added into a div called 'events'.  The title for the calendar is
 * placed in a div called 'calendarTitle'
 *
 * @param {json} feedRoot is the root of the feed, containing all entries 
 */ 
function listEvents(feedRoot) {
  var entries = feedRoot.feed.getEntries();
  var eventDiv = document.getElementById('events');
  if (eventDiv.childNodes.length > 0) {
    eventDiv.removeChild(eventDiv.childNodes[0]);
  }	  
  /* create a new unordered list */
  var ul = document.createElement('ul');
  /* set the calendarTitle div with the name of the calendar */
  /*document.getElementById('calendarTitle').innerHTML = 
    "Calendar: " + feedRoot.feed.title.$t; */
  /* loop through each event in the feed */
  
  var li = document.createElement('li');
  li.innerHTML = "<h2>Events: <a href='https://www.google.com/calendar/render?cid=webmaster%40purdueatl.org'><img src='images/calendar_plus_en.gif' width='104' height='17'></a></h2><div class='hline'></div>"
  // append the list item onto the unordered list
  ul.appendChild(li);
  
  var len = entries.length;
  for (var i = 0; i < len; i++) {
    var entry = entries[i];
    var title = entry.getTitle().getText();
	var description = htmlify(entry.content.$t);
    var startDateTime = null;
    var startJSDate = null;
    var times = entry.getTimes();
    if (times.length > 0) {
      startDateTime = times[0].getStartTime();
      startJSDate = startDateTime.getDate();
    }
    var entryLinkHref = null;
    if (entry.getHtmlLink() != null) {
      entryLinkHref = entry.getHtmlLink().getHref();
    }
    var dateString = (startJSDate.getMonth() + 1) + "/" + startJSDate.getDate();
    if (!startDateTime.isDateOnly()) {
		
    dateString = (startJSDate.getMonth() + 1) + '/' + startJSDate.getDate() + ' @ ' + 
        ((startJSDate.getHours()>12)?(startJSDate.getHours()-12):(startJSDate.getHours()===0?12:
	startJSDate.getHours())) + ':' + ((startJSDate.getMinutes()<10)?('0' + 
	startJSDate.getMinutes()):(startJSDate.getMinutes())) + ' ' + 
	((startJSDate.getHours()>=12)?'PM':'AM');
    }
    var li = document.createElement('li');



    /* if we have a link to the event, create an 'a' element */
   if (entryLinkHref != null) {
/*	  li.innerHTML = li.innerHTML + "<div class='events-date'><b>";
      entryLink = document.createElement('a');
      entryLink.setAttribute('href', entryLinkHref);
      entryLink.appendChild(document.createTextNode(dateString));
      li.appendChild(entryLink);
	  li.appendChild(document.createTextNode(' : ' + title));
	  li.innerHTML = li.innerHTML + "</div></b><div class='events-description'>";
	  li.innerHTML = li.innerHTML + description + "</div><div class='hline'></div>";*/
	  
	  li.innerHTML = "<div class='events-date'><a href='" + entryLinkHref + "'>" + dateString + " : " + "<font color = 'black'>" + title + "</font></a></div><br><br><div class='events-description'>" + description + "</div><div class='hline'></div>"
	  
    } else {
/*	  	li.appendChild(document.createTextNode(dateString + ' : ' + title));
		li.innerHTML = li.innerHTML + "</div><div class='events-description'>";
		li.innerHTML = li.innerHTML + description + "</div><br><div class='hline'></div>";*/
		
		li.innerHTML = "<div class='events-date'>" + dateString + " : " + "<font color = 'black'>" + title + "</font></div><br><br><div class='events-description'>" + description + "</div><div class='hline'></div>"
		
    }


	
		    

    /* append the list item onto the unordered list */
    ul.appendChild(li);
  }
  eventDiv.appendChild(ul);
}

google.setOnLoadCallback(init);
//-->
