student.js | searchcode

/code/war/js/student.js

https://code.google.com/p/teammatespes/
JavaScript | 1582 lines | 1123 code | 265 blank | 194 comment | 180 complexity | 41f3197f87e987addb8e9f595304e879 MD5 | raw file

// AJAX

var xmlhttp = new getXMLObject();



// DISPLAY

var DISPLAY_COURSE_DELETED = "The course has been deleted.";

var DISPLAY_COURSE_ARCHIVED = "The course has been archived.";

var DISPLAY_COURSE_UNARCHIVED = "The course has been unarchived.";

var DISPLAY_EVALUATION_DEADLINEPASSED = "The evaluation deadline has passed.";

var DISPLAY_EVALUATION_SUBMITTED = "The evaluation has been submitted.";

var DISPLAY_FIELDS_EMPTY = "<FONT color=\"red\">Please fill in all the relevant fields.</font>";

var DISPLAY_LOADING = "<img src=images/ajax-loader.gif /><br />";

var DISPLAY_SERVERERROR = "Connection to the server has timed out. Please refresh the page.";

var DISPLAY_STUDENT_GOOGLEIDEXISTSINCOURSE = "<FONT color=\"red\">You are already registered in the course.</font>";

var DISPLAY_STUDENT_JOINEDCOURSE = "You have successfully joined the course.";

var DISPLAY_STUDENT_REGISTRATIONKEYINVALID = "<FONT color=\"red\">Registration key is invalid.</font>";

var DISPLAY_STUDENT_REGISTRATIONKEYTAKEN = "<FONT color=\"red\">Registration key has been taken by another student.</font>";



// DIV

var DIV_COURSE_INFORMATION = "studentCourseInformation";

var DIV_COURSE_MANAGEMENT = "studentCourseManagement";

var DIV_COURSE_TABLE = "studentCourseTable";

var DIV_EVALUATION_INFORMATION = "studentEvaluationInformation";

var DIV_EVALUATION_PAST = "studentPastEvaluations";

var DIV_EVALUATION_PENDING = "studentPendingEvaluations";

var DIV_EVALUATION_RESULTS = "studentEvaluationResults";

var DIV_EVALUATION_SUBMISSIONS = "studentEvaluationSubmissions";

var DIV_EVALUATION_SUBMISSIONBUTTONS = "studentEvaluationSubmissionButtons";

var DIV_HEADER_OPERATION = "headerOperation";

var DIV_STATUS = "statusMessage";

var DIV_TOPOFPAGE = "topOfPage";



// GLOBAL VARIABLES FOR GUI

var courseSort = { ID:0, name:1 }

var courseSortStatus = courseSort.name; 



var courseViewArchived = { show:0, hide:1 }

var courseViewArchivedStatus = courseViewArchived.hide; 



var evaluationSort = { courseID:0, name:1 }

var evaluationSortStatus = evaluationSort.courseID; 



// MESSAGES

var MSG_EVALUATION_DEADLINEPASSED = "evaluation deadline passed";



var MSG_STUDENT_COURSEJOINED = "course joined";

var MSG_STUDENT_GOOGLEIDEXISTSINCOURSE = "googleid exists in course";

var MSG_STUDENT_REGISTRATIONKEYINVALID = "registration key invalid";

var MSG_STUDENT_REGISTRATIONKEYTAKEN = "registration key taken";



// OPERATIONS

var OPERATION_STUDENT_ARCHIVECOURSE = "student_archivecourse";

var OPERATION_STUDENT_DELETECOURSE = "student_deletecourse";

var OPERATION_STUDENT_GETCOURSE = "student_getcourse";

var OPERATION_STUDENT_GETCOURSELIST = "student_getcourselist";

var OPERATION_STUDENT_GETPASTEVALUATIONLIST = "student_getpastevaluationlist";

var OPERATION_STUDENT_GETPENDINGEVALUATIONLIST = "student_getpendingevaluationlist";

var OPERATION_STUDENT_GETSUBMISSIONLIST = "student_getsubmissionlist";

var OPERATION_STUDENT_GETSUBMISSIONRESULTSLIST = "student_getsubmissionresultslist";

var OPERATION_STUDENT_JOINCOURSE = "student_joincourse";

var OPERATION_STUDENT_LOGOUT = "student_logout";

var OPERATION_STUDENT_SUBMITEVALUATION = "student_submitevaluation";

var OPERATION_STUDENT_UNARCHIVECOURSE = "student_unarchivecourse";



// PARAMETERS

var COURSE_COORDINATORNAME = "coordinatorname";

var COURSE_ID = "courseid";

var COURSE_NAME = "coursename";

var COURSE_STATUS = "coursestatus";



var EVALUATION_COMMENTSENABLED = "commentsstatus";

var EVALUATION_DEADLINE = "deadline";

var EVALUATION_DEADLINETIME = "deadlinetime";

var EVALUATION_GRACEPERIOD = "graceperiod";

var EVALUATION_INSTRUCTIONS = "instr";

var EVALUATION_NAME = "evaluationname";

var EVALUATION_PUBLISHED = "published";

var EVALUATION_START = "start";

var EVALUATION_STARTTIME = "starttime";

var EVALUATION_TIMEZONE = "timezone";



var STUDENT_COMMENTSTOSTUDENT = "commentstostudent";

var STUDENT_EMAIL = "email";

var STUDENT_FROMSTUDENT = "fromemail";

var STUDENT_FROMSTUDENTCOMMENTS = "fromstudentcomments";

var STUDENT_FROMSTUDENTNAME = "fromname";

var STUDENT_JUSTIFICATION = "justification";

var STUDENT_NAME = "name";

var STUDENT_NUMBEROFSUBMISSIONS = "numberofsubmissions";

var STUDENT_POINTS = "points";

var STUDENT_POINTSBUMPRATIO = "pointsbumpratio";

var STUDENT_REGKEY = "regkey";

var STUDENT_TEAMMATE = "teammate";

var STUDENT_TEAMMATES = "teammates";

var STUDENT_TEAMNAME = "teamname";

var STUDENT_TOSTUDENT = "toemail";

var STUDENT_TOSTUDENTCOMMENTS = "tostudentcomments";

var STUDENT_TOSTUDENTNAME = "toname";



/*

 * Returns

 * 

 * 0: successful

 * 1: server error

 *

 */

function archiveCourse(courseID)

{

	if(xmlhttp)

	{		

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_ARCHIVECOURSE + "&" + COURSE_ID + "=" + encodeURIComponent(courseID));

	

		return handleArchiveCourse();

	}

}



function clearAllDisplay()

{

	document.getElementById(DIV_COURSE_INFORMATION).innerHTML = "";

	document.getElementById(DIV_COURSE_MANAGEMENT).innerHTML = "";

	document.getElementById(DIV_COURSE_TABLE).innerHTML = "";

	document.getElementById(DIV_EVALUATION_INFORMATION).innerHTML = "";

	document.getElementById(DIV_EVALUATION_PAST).innerHTML = "";

	document.getElementById(DIV_EVALUATION_PENDING).innerHTML = "";

	document.getElementById(DIV_EVALUATION_RESULTS).innerHTML = ""; 

	document.getElementById(DIV_EVALUATION_SUBMISSIONBUTTONS).innerHTML = ""; 

	document.getElementById(DIV_EVALUATION_SUBMISSIONS).innerHTML = ""; 

	document.getElementById(DIV_HEADER_OPERATION).innerHTML = "";

	document.getElementById(DIV_STATUS).innerHTML = ""; 

	document.getElementById(DIV_TOPOFPAGE).innerHTML = "";

}



function compileSubmissionsIntoSummaryList(submissionList)

{

	var summaryList = new Array();

	

	var exists = false;

	

	var toStudent;

	var toStudentName;

	var toStudentComments;

	var totalPoints;

	var totalPointGivers;

	var claimedPoints;

	var teamName;

	var average;

	var difference;

	var submitted;

	var pointsBumpRatio;

	

	var count = 0;

	

	for(loop = 0; loop < submissionList.length; loop++)

	{

		exists = false;

		submitted = false;

		

		for(x = 0; x < summaryList.length; x++)

		{

			if(summaryList[x].toStudent == submissionList[loop].toStudent)

			{

				exists = true;

			}

		}

		

		if(exists == false)

		{

			toStudent = submissionList[loop].toStudent;

			toStudentName = submissionList[loop].toStudentName;

			toStudentComments = submissionList[loop].toStudentComments;

			teamName = submissionList[loop].teamName;

			totalPoints = 0;

			totalPointGivers = 0;

			

			for(y = loop; y < submissionList.length; y++)

			{

				if(submissionList[y].toStudent == toStudent)

				{

					if(submissionList[y].fromStudent == toStudent)

					{

						if(submissionList[y].points == -999 || submissionList[y].points == -101)

						{

							claimedPoints = "N/A";

						}

						

						else

						{

							// Should not alter student's own claimed points for student's view

							claimedPoints = submissionList[y].points;

						}

						

						if(submissionList[y].points != -999)

						{

							submitted = true;

						}

					}

					

					else

					{

						if(submissionList[y].points != -999 && submissionList[y].points != -101)

						{

							totalPoints += submissionList[y].points * submissionList[y].pointsBumpRatio;

							totalPointGivers++;

						}

					}

				}

			}

			

			if(totalPointGivers != 0)

			{

				average = Math.round(totalPoints / totalPointGivers);

			}

			

			else

			{

				average = "N/A";

			}

			

			if(claimedPoints != "N/A" && average != "N/A")

			{

				difference = Math.round(average-claimedPoints);

			}

			

			else

			{

				difference = "N/A";

			}

			

			summaryList[count++] = { toStudent:toStudent, toStudentName:toStudentName, teamName:teamName,

					average:average, difference:difference, toStudentComments:toStudentComments, submitted:submitted,

					claimedPoints:claimedPoints};

		}

	}

	

	// Find normalizing points bump ratio for averages

	var teamsNormalized = new Array();

	count = 0;

	

	for(loop = 0; loop < summaryList.length; loop++)

	{

		// Reset variables

		exists = false;

		totalPoints = 0;

		totalGivers = 0;

		pointsBumpRatio = 0;

		

		// Check if the team is added

		for(y = 0; y < teamsNormalized.length; y++)

		{

			if(summaryList[loop].teamName == teamsNormalized[y].teamName)

			{

				exists = true;

				break;

			}

		}

		

		if(exists == false)

		{

			// Tabulate the perceived scores

			for(y = loop; y < summaryList.length; y++)

			{

				if(summaryList[y].teamName == summaryList[loop].teamName && summaryList[y].average != "N/A")

				{

					totalPoints += summaryList[y].average;

					totalGivers += 1;

				}

			}

			

			if(totalGivers != 0)

			{

				pointsBumpRatio = totalGivers * 100 / totalPoints; 

				

				// Store the bump ratio

				teamsNormalized[count++] = {pointsBumpRatio:pointsBumpRatio, teamName:teamName};

			}

	

		}

		

	}

	

	// Do the normalization

	for(loop = 0; loop < teamsNormalized.length; loop++)

	{

		for(y = 0; y < summaryList.length; y++)

		{

			if(summaryList[y].teamName == teamsNormalized[loop].teamName && summaryList[y].average != "N/A")

			{

				summaryList[y].average = Math.round(summaryList[y].average * teamsNormalized[loop].pointsBumpRatio);



				if(summaryList[y].claimedPoints != "N/A")

				{

					summaryList[y].difference = Math.round(summaryList[y].average-summaryList[y].claimedPoints);

				}

				

				else

				{

					summaryList[y].difference = "N/A";

				}

			}

		}

	}

	

	return summaryList;

}



function convertDateToDDMMYYYY(date)

{

	var string;

	

	if(date.getDate() < 10)

	{

		string = "0" + date.getDate();

	}

	

	else

	{

		string = date.getDate();

	}

	

	string = string + "/";

	

	if(date.getMonth()+1 < 10)

	{

		string = string + "0" + (date.getMonth()+1);

	}

	

	else

	{

		string = string + (date.getMonth()+1);

	}

	

	string = string + "/" + date.getFullYear();

	

	return string;

}



function convertDateToHHMM(date)

{

	var string;

	

	if(date.getHours() < 10)

	{

		string = "0" + date.getHours();

	}

	

	else

	{

		string = "" + date.getHours();

	}

	

	if(date.getMinutes() < 10)

	{

		string = string + "0" + date.getMinutes();

	}

	

	else

	{

		string = string + date.getMinutes();

	}

	

	return string;

}



function displayCourseInformation(courseID)

{

	clearAllDisplay();

	doGetCourse(courseID);

}



function displayCoursesTab()

{

	clearAllDisplay();

	setStatusMessage(DISPLAY_LOADING);

	printJoinCourse();

	doGetCourseList();

	document.getElementById(DIV_TOPOFPAGE).scrollIntoView(true);

	

}



function displayEvaluationsTab()

{

	clearAllDisplay();

	setStatusMessage(DISPLAY_LOADING);

	doGetPendingEvaluationList();

	doGetPastEvaluationList();

	clearStatusMessage();

	document.getElementById(DIV_TOPOFPAGE).scrollIntoView(true);

}



function displayEvaluationSubmission(evaluationList, loop)

{

	var courseID = evaluationList[loop].courseID;

	var courseName = evaluationList[loop].courseName;

	var evaluationName =  evaluationList[loop].name;

	var instructions =  evaluationList[loop].instructions;

	var start =  evaluationList[loop].start;

	var deadline =  evaluationList[loop].deadline;

	var gracePeriod =  evaluationList[loop].gracePeriod;

	var commentsEnabled =  evaluationList[loop].commentsEnabled;



	clearAllDisplay();

	

	printEvaluationHeader(courseID, evaluationName, start, deadline, gracePeriod, instructions, commentsEnabled);

	doGetSubmissionList(courseID, evaluationName, commentsEnabled);

	document.getElementById(DIV_TOPOFPAGE).scrollIntoView(true);

}



function displayEvaluationResults(evaluationList, loop)

{

	var courseID = evaluationList[loop].courseID;

	var courseName = evaluationList[loop].courseName;

	var evaluationName =  evaluationList[loop].name;

	var instructions =  evaluationList[loop].instructions;

	var start =  evaluationList[loop].start;

	var deadline =  evaluationList[loop].deadline;

	var gracePeriod =  evaluationList[loop].gracePeriod;

	var commentsEnabled =  evaluationList[loop].commentsEnabled;



	clearAllDisplay();

	

	doGetSubmissionResultsList(courseID, evaluationName, start, deadline);

	document.getElementById(DIV_TOPOFPAGE).scrollIntoView(true);

}



//function displayEvaluationPoints(points){

//	

//	delta = null;

//	

//	if(points > 100){

//		delta = points - 100;

//		return "Equal Share + " + delta + "%";

//	}

//	else if(points < 100){

//		delta = 100 - points;

//		return "Equal Share - " + delta + "%";

//	}

//	else {

//		return "Equal Share";

//	}

//	

//}



function doArchiveCourse(courseID)

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = archiveCourse(courseID);

	

	if(results == 0)

	{

		doGetCourseList();

		setStatusMessage(DISPLAY_COURSE_ARCHIVED);

	}

	

	else

	{

		alert(DISPLAY_SERVERERROR);

	}

}



function doGetCompletedEvaluation(courseID, name)

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = getEvaluation(courseID, name);

}



function doGetCourse(courseID)

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = getCourse(courseID);

	

	if(results != 1)

	{

		printCourseStudentForm(results);

	}

	

	else

	{

		alert(DISPLAY_SERVERERROR);

	}

}



function doGetCourseList()

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = getCourseList();

	

	clearStatusMessage();

	

	if(results != 1)

	{

		// toggleSortCoursesByID calls printCourseList too

		printCourseList(results, STUDENT);

		

		if(courseSortStatus == courseSort.name)

		{

			toggleSortCoursesByName(results);

		}

		

		else

		{

			toggleSortCoursesByID(results);

		}

		

	}

	

	else

	{

		alert(DISPLAY_SERVERERROR);

	}

}



function doGetPastEvaluationList()

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = getPastEvaluationList();

	

	clearStatusMessage();

	

	if(results != 1)

	{

		printPastEvaluationList(results);

		

		// Toggle calls printPastEvaluationList too

		if(evaluationSortStatus == evaluationSort.name)

		{

			toggleSortPastEvaluationsByName(results);

		}	



		else

		{

			toggleSortPastEvaluationsByCourseID(results);

		}

	}

	

	else

	{

		alert(DISPLAY_SERVERERROR);

	}

}



function doGetPendingEvaluationList()

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = getPendingEvaluationList();

	

	clearStatusMessage();

	

	if(results != 1)

	{

		printPendingEvaluationList(results);

	}

	

	else

	{

		alert(DISPLAY_SERVERERROR);

	}

}



function doGetSubmissionList(courseID, evaluationName, commentsEnabled)

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = getSubmissionList(courseID, evaluationName); 

	

	clearStatusMessage();

	

	if(results != 1)

	{

		printSubmissionForm(results, commentsEnabled);

	}

	

	else

	{

		alert(DISPLAY_SERVERERROR);

	}

}



function doGetSubmissionResultsList(courseID, evaluationName, start, deadline)

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = getSubmissionResultsList(courseID, evaluationName); 

	

	clearStatusMessage();

	

	if(results != 1)

	{

		printEvaluationResultStudentForm(compileSubmissionsIntoSummaryList(results), results, start, deadline);

	}

	

	else

	{

		alert(DISPLAY_SERVERERROR);

	}

}



function doJoinCourse(registrationKey)

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = joinCourse(registrationKey);

	

	displayCoursesTab();

	

	if(results == 0)

	{

		setStatusMessage(DISPLAY_STUDENT_JOINEDCOURSE);

	}

	

	else if(results == 1)

	{

		alert(DISPLAY_SERVERERROR);

	}

	

	else if(results == 2)

	{

		setStatusMessage(DISPLAY_STUDENT_GOOGLEIDEXISTSINCOURSE);

	}

	

	else if(results == 3)

	{

		setStatusMessage(DISPLAY_STUDENT_REGISTRATIONKEYINVALID);

	}

	

	else if(results == 4)

	{

		setStatusMessage(DISPLAY_STUDENT_REGISTRATIONKEYTAKEN);

	}

}



function doLeaveCourse(courseID)

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = leaveCourse(courseID);

	

	if(results == 0)

	{

		doGetCourseList();

		setStatusMessage(DISPLAY_COURSE_DELETED);

	}

	

	else

	{

		alert(DISPLAY_SERVERERROR);

	}

}



function doSubmitEvaluation(form, length, commentsEnabled)

{

	setStatusMessage(DISPLAY_LOADING);

	

	var submissionList = extractSubmissionList(form, length);

	var results = submitEvaluation(submissionList, commentsEnabled);

	

	if(results == 0)

	{

		displayEvaluationsTab();

		setStatusMessage(DISPLAY_EVALUATION_SUBMITTED);

	}

	

	else if(results == 2)

	{

		displayEvaluationsTab();

		setStatusMessage(DISPLAY_EVALUATION_DEADLINEPASSED);

	}

	

	else if(results == 3)

	{

		setStatusMessage(DISPLAY_FIELDS_EMPTY);

	}

	

	else 

	{

		alert(DISPLAY_SERVERERROR);

	}



}



function doUnarchiveCourse(courseID)

{

	setStatusMessage(DISPLAY_LOADING);

	

	var results = unarchiveCourse(courseID);

	

	if(results == 0)

	{

		doGetCourseList();

		setStatusMessage(DISPLAY_COURSE_UNARCHIVED);

	}

	

	else

	{

		alert(DISPLAY_SERVERERROR);

	}

}



function extractSubmissionList(form, length)

{

	var submissionList = [];

	

	var fromStudent;

	var toStudent;

	var courseID;

	var evaluationName;

	var teamName;

	var points;

	var justification;

	var commentsToStudent;



	var counter = 0;

	var len = length * 8;

	

	for(loop = 0; loop < len; loop++)

	{

		

		fromStudent = form.elements[loop++].value;

		toStudent = form.elements[loop++].value;

		courseID = form.elements[loop++].value;

		evaluationName = form.elements[loop++].value;

		teamName = form.elements[loop++].value;

		points = form.elements[loop++].value;



		if(form.elements[loop].disabled == false)

		{

			justification = form.elements[loop++].value;

		}

		

		else

		{

			justification = "";

			loop++;

		}

		

		if(form.elements[loop].disabled == false)

		{

			commentsToStudent = form.elements[loop].value;

		}

		

		else

		{

			commentsToStudent = "";

		}

		

		

		

		submissionList[counter++] = {fromStudent:fromStudent, toStudent:toStudent, courseID:courseID,

				evaluationName:evaluationName, teamName:teamName, points:points,

				justification:justification, commentsToStudent:commentsToStudent};

		

	}

	

	return submissionList;

}



/*

 * Returns

 * 

 * course: successful

 * 1: server error

 *

 */

function getCourse(courseID)

{

	if(xmlhttp)

	{

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_GETCOURSE + "&" + COURSE_ID + "=" + encodeURIComponent(courseID)); 

		

		return handleGetCourse();

	}

}



/*

 * Returns

 * 

 * courseList: successful

 * 1: server error

 *

 */

function getCourseList()

{

	if(xmlhttp)

	{

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_GETCOURSELIST); 

		

		return handleGetCourseList();

	}

}



function getDateWithTimeZoneOffset(timeZone)

{

	var now = new Date();

	

	// Convert local time zone to ms

	var nowTime = now.getTime();

	

	// Obtain local time zone offset

	var localOffset = now.getTimezoneOffset() * 60000;

	

	// Obtain UTC time

	var UTC = nowTime + localOffset;

	

	// Add the time zone of evaluation

	var nowMilliS = UTC + (timeZone * 60 * 60 * 1000);

	

	now.setTime(nowMilliS);

	

	return now;

}



/*

 * Returns

 * 

 * evaluationList: successful

 * 1: server error

 * 

 */

function getPastEvaluationList()

{

	if(xmlhttp)

	{

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_GETPASTEVALUATIONLIST);

		

		return handleGetEvaluationList();

	}

}



/*

 * Returns

 * 

 * evaluationList: successful

 * 1: server error

 * 

 */

function getPendingEvaluationList()

{

	if(xmlhttp)

	{

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_GETPENDINGEVALUATIONLIST);

		

		return handleGetEvaluationList();

	}

}



/*

 * Returns

 * 

 * submissionList: successful

 * 1: server error

 * 

 */

function getSubmissionList(courseID, evaluationName)

{

	if(xmlhttp)

	{

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_GETSUBMISSIONLIST + "&" + COURSE_ID + "=" +

				encodeURIComponent(courseID) + "&" + EVALUATION_NAME + "=" + encodeURIComponent(evaluationName)); 

		

		return handleGetSubmissionList();

	}

}



/*

 * Returns

 * 

 * submissionList: successful

 * 1: server error

 * 

 */

function getSubmissionResultsList(courseID, evaluationName)

{

	if(xmlhttp)

	{

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_GETSUBMISSIONRESULTSLIST + "&" + COURSE_ID + "=" +

				encodeURIComponent(courseID) + "&" + EVALUATION_NAME + "=" + encodeURIComponent(evaluationName)); 

		

		return handleGetSubmissionResultsList();

	}

}



function getXMLObject()  

{

	var xmlHttp = false;

	

	try {

		xmlHttp = new ActiveXObject("Msxml2.XMLHTTP")  

	}

	catch (e) {

		try {

			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP")  

		}

		catch (e2) {

			xmlHttp = false  

		}

	}

	if (!xmlHttp && typeof XMLHttpRequest != 'undefined') {

		xmlHttp = new XMLHttpRequest();        

	}

	

	return xmlHttp; 

}



/*

 * Returns

 * 

 * 0: successful

 * 1: server error

 *

 */

function handleArchiveCourse()

{

	if(xmlhttp.status == 200) 

	{

		return 0;

	}

	

	else

	{

		return 1;

	}

}



/*

 * Returns

 * 

 * course: successful

 * 1: server error

 *

 */

function handleGetCourse()

{

	if (xmlhttp.status == 200) 

	{

		clearStatusMessage();

		

		var course = xmlhttp.responseXML.getElementsByTagName("coursedetails")[0];

		

		var courseID = course.getElementsByTagName(COURSE_ID)[0].firstChild.nodeValue;

		var courseName = course.getElementsByTagName(COURSE_NAME)[0].firstChild.nodeValue;

		var coordinatorName = course.getElementsByTagName(COURSE_COORDINATORNAME)[0].firstChild.nodeValue;

		var studentTeamName = course.getElementsByTagName(STUDENT_TEAMNAME)[0].firstChild.nodeValue;

		var studentName = course.getElementsByTagName(STUDENT_NAME)[0].firstChild.nodeValue;

		var studentEmail = course.getElementsByTagName(STUDENT_EMAIL)[0].firstChild.nodeValue;

		

		var teammates = course.getElementsByTagName(STUDENT_TEAMMATES)[0];

		var teammateList = new Array();

		

		var len = teammates.childNodes.length;

		for(var x = 0; x < len; x++)

		{

			teammateList[x] = teammates.getElementsByTagName(STUDENT_TEAMMATE)[x].firstChild.nodeValue;

		}

		

		var course = {courseID:courseID, courseName:courseName, coordinatorName:coordinatorName, 

				studentTeamName:studentTeamName, studentName:studentName, studentEmail:studentEmail, teammateList:teammateList};

		

		return course;

			

	}

	

	else

	{

		return 1;

	}

}



/*

 * Returns

 * 

 * courseList: successful

 * 1: server error

 * 

 */

function handleGetCourseList()

{

	if (xmlhttp.status == 200) 

	{

		var courses = xmlhttp.responseXML.getElementsByTagName("courses")[0]; 

		var courseList = new Array(); 

		

		

		if(courses != null) 

		{ 

			var course; 

			var id; 

			var name; 

			var teamName;

			var status;

			

			var len = courses.childNodes.length;

			for(loop = 0; loop < len; loop++) 

			{ 

				course = courses.childNodes[loop]; 

				ID =  course.getElementsByTagName(COURSE_ID)[0].firstChild.nodeValue;

				name = course.getElementsByTagName(COURSE_NAME)[0].firstChild.nodeValue;

				teamName = course.getElementsByTagName(STUDENT_TEAMNAME)[0].firstChild.nodeValue;

				status = course.getElementsByTagName(COURSE_STATUS)[0].firstChild.nodeValue;



				courseList[loop] = {ID:ID, name:name, teamName:teamName, status:status}; 

			}

		}

		

		return courseList;

	}

	

	else

	{

		return 1;

	}

}



/*

 * Returns

 * 

 * evaluationList: successful

 * 1: server error

 * 

 */

function handleGetEvaluationList()

{

	if(xmlhttp.status == 200)

	{

		var evaluations = xmlhttp.responseXML.getElementsByTagName("evaluations")[0];

		

		var evaluationList = [];

		var evaluation;

		var courseID;

		var name;

		var startString;

		var start;

		var deadlineString;

		var deadline;

		var timeZone;

		var gracePeriod;

		var instructions;

		var commentsEnabled;

		var published;



		var len = evaluations.childNodes.length;

		for(loop = 0; loop < len; loop++)

		{

			evaluation = evaluations.childNodes[loop];

			courseID = evaluation.getElementsByTagName(COURSE_ID)[0].firstChild.nodeValue;

			name = evaluation.getElementsByTagName(EVALUATION_NAME)[0].firstChild.nodeValue;

			startString = evaluation.getElementsByTagName(EVALUATION_START)[0].firstChild.nodeValue;

			deadlineString = evaluation.getElementsByTagName(EVALUATION_DEADLINE)[0].firstChild.nodeValue;

			timeZone = evaluation.getElementsByTagName(EVALUATION_TIMEZONE)[0].firstChild.nodeValue;

			gracePeriod = evaluation.getElementsByTagName(EVALUATION_GRACEPERIOD)[0].firstChild.nodeValue;

			instructions = evaluation.getElementsByTagName(EVALUATION_INSTRUCTIONS)[0].firstChild.nodeValue;

			commentsEnabled = (evaluation.getElementsByTagName(EVALUATION_COMMENTSENABLED)[0].firstChild.nodeValue == "true");

			published = (evaluation.getElementsByTagName(EVALUATION_PUBLISHED)[0].firstChild.nodeValue == "true");

			

			deadline = new Date(deadlineString);

			start = new Date(startString);



			evaluationList[loop] = {courseID:courseID, name:name, start:start, deadline:deadline, timeZone:timeZone,

					gracePeriod:gracePeriod, instructions:instructions, commentsEnabled:commentsEnabled,

					published:published};

		}



		return evaluationList;

	}

	

	else

	{

		return 1;

	}

}



/*

 * Returns

 * 

 * submissionList: successful

 * 1: server error

 * 

 */

function handleGetSubmissionList()

{

	if(xmlhttp.status == 200)

	{

		var submissions = xmlhttp.responseXML.getElementsByTagName("submissions")[0];

		var submissionList = new Array();

		var submission;

		

		var fromStudentName;

		var toStudentName;

		var fromStudent;

		var toStudent;

		var courseID;

		var evaluationName;

		var teamName;

		var points;

		var justification;

		var commentsToStudent;

		

		if(submissions != null)

		{

			var len = submissions.childNodes.length;

			for(loop = 0; loop < len; loop++)

			{

				submission = submissions.childNodes[loop];

				fromStudentName = submission.getElementsByTagName(STUDENT_FROMSTUDENTNAME)[0].firstChild.nodeValue;

				fromStudent = submission.getElementsByTagName(STUDENT_FROMSTUDENT)[0].firstChild.nodeValue;

				toStudentName = submission.getElementsByTagName(STUDENT_TOSTUDENTNAME)[0].firstChild.nodeValue;

				toStudent = submission.getElementsByTagName(STUDENT_TOSTUDENT)[0].firstChild.nodeValue;

				courseID = submission.getElementsByTagName(COURSE_ID)[0].firstChild.nodeValue;

				evaluationName = submission.getElementsByTagName(EVALUATION_NAME)[0].firstChild.nodeValue;

				teamName = submission.getElementsByTagName(STUDENT_TEAMNAME)[0].firstChild.nodeValue;

				points = parseInt(submission.getElementsByTagName(STUDENT_POINTS)[0].firstChild.nodeValue);

				justification = submission.getElementsByTagName(STUDENT_JUSTIFICATION)[0].firstChild.nodeValue;

				commentsToStudent = submission.getElementsByTagName(STUDENT_COMMENTSTOSTUDENT)[0].firstChild.nodeValue;

					



				submissionList[loop] = {fromStudentName:fromStudentName, toStudentName:toStudentName, 

						fromStudent:fromStudent, toStudent:toStudent, courseID:courseID,

						evaluationName:evaluationName, teamName:teamName, justification:justification,

						commentsToStudent:commentsToStudent, points:points}; 

			}

		}

		

		return submissionList;

	}

	

	else

	{

		return 1;

	}

}



/*

 * Returns

 * 

 * submissionList: successful

 * 1: server error

 * 

 */

function handleGetSubmissionResultsList()

{

	if(xmlhttp.status == 200)

	{

		var submissions = xmlhttp.responseXML.getElementsByTagName("submissions")[0];

		var submissionList = new Array();

		var submission;

		

		var fromStudentName;

		var toStudentName;

		var fromStudent;

		var toStudent;

		var fromStudentComments;

		var toStudentComments;

		var courseID;

		var evaluationName;

		var teamName;

		var points;

		var pointsBumpRatio;

		var justification;

		var commentsToStudent;



		if(submissions != null)

		{

			var len = submissions.childNodes.length;

			for(loop = 0; loop < len; loop++)

			{

				submission = submissions.childNodes[loop];

				fromStudentName = submission.getElementsByTagName(STUDENT_FROMSTUDENTNAME)[0].firstChild.nodeValue;

				fromStudent = submission.getElementsByTagName(STUDENT_FROMSTUDENT)[0].firstChild.nodeValue;

				toStudentName = submission.getElementsByTagName(STUDENT_TOSTUDENTNAME)[0].firstChild.nodeValue;

				toStudent = submission.getElementsByTagName(STUDENT_TOSTUDENT)[0].firstChild.nodeValue;

				fromStudentComments = submission.getElementsByTagName(STUDENT_FROMSTUDENTCOMMENTS)[0].firstChild.nodeValue;

				toStudentComments = submission.getElementsByTagName(STUDENT_TOSTUDENTCOMMENTS)[0].firstChild.nodeValue;

				courseID = submission.getElementsByTagName(COURSE_ID)[0].firstChild.nodeValue;

				evaluationName = submission.getElementsByTagName(EVALUATION_NAME)[0].firstChild.nodeValue;

				teamName = submission.getElementsByTagName(STUDENT_TEAMNAME)[0].firstChild.nodeValue;

				points = parseInt(submission.getElementsByTagName(STUDENT_POINTS)[0].firstChild.nodeValue);

				pointsBumpRatio = parseFloat(submission.getElementsByTagName(STUDENT_POINTSBUMPRATIO)[0].firstChild.nodeValue);

				justification = submission.getElementsByTagName(STUDENT_JUSTIFICATION)[0].firstChild.nodeValue;

				commentsToStudent = submission.getElementsByTagName(STUDENT_COMMENTSTOSTUDENT)[0].firstChild.nodeValue;

					

				submissionList[loop] = {fromStudentName:fromStudentName, toStudentName:toStudentName, 

						fromStudent:fromStudent, toStudent:toStudent, courseID:courseID,

						evaluationName:evaluationName, teamName:teamName, justification:justification,

						commentsToStudent:commentsToStudent, points:points, pointsBumpRatio:pointsBumpRatio,

						fromStudentComments:fromStudentComments, toStudentComments:toStudentComments}; 

			}

		}

		

		return submissionList;

	}

	

	else

	{

		return 1;

	}

}



/*

 * Returns

 * 

 * 0: successful

 * 1: server error

 * 2: google ID already exists in course

 * 3: registration key invalid

 * 4: registration key taken

 * 

 */

function handleJoinCourse()

{

	if (xmlhttp.status == 200) 

	{

		var status = xmlhttp.responseXML.getElementsByTagName("status")[0];

		

		if(status != null)

		{

			var message = status.firstChild.nodeValue;

			

			if(message == MSG_STUDENT_COURSEJOINED)

			{

				return 0;

			}

			

			else if(message == MSG_STUDENT_GOOGLEIDEXISTSINCOURSE)

			{

				return 2;

			}

			

			else if(message == MSG_STUDENT_REGISTRATIONKEYINVALID)

			{

				return 3;

			}

			

			else

			{

				return 4;

			}

		}

	}

	

	else

	{

		return 1;

	}

}

	

/*

 * Returns

 * 

 * 0: successful

 * 1: server error

 *

 */

function handleLeaveCourse()

{

	if(xmlhttp)

	{

		return 0;

	}

	

	else

	{

		return 1;

	}

}



function handleLogout()

{

	if (xmlhttp.status == 200) 

	{

		var url = xmlhttp.responseXML.getElementsByTagName("url")[0];

		window.location = url.firstChild.nodeValue;

	}

}



/*

 * Returns

 * 

 * 0: successful

 * 1: server error 

 * 2: deadline passed

 * 

 */

function handleSubmitEvaluation()

{

	if(xmlhttp.status == 200) 

	{

		var status = xmlhttp.responseXML.getElementsByTagName("status")[0];

		var message;



		if(status != null)

		{



			message = status.firstChild.nodeValue;



			if(message == MSG_EVALUATION_DEADLINEPASSED)

			{

				return 2;

			}

			

			else

			{

				return 0;

			}

		}

		

	}

	

	else

	{

		return 1;

	}

}



/*

 * Returns

 * 

 * 0: successful

 * 1: server error

 *

 */

function handleUnarchiveCourse()

{

	if(xmlhttp.status == 200) 

	{

		return 0;

	}

	

	else

	{

		return 1;

	}

}



/*

 * Returns

 * 

 * 0: successful

 * 1: server error

 * 2: google ID already exists in course

 * 3: registration key invalid

 * 

 */

function joinCourse(registrationKey)

{

	if(xmlhttp)

	{		

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_JOINCOURSE + "&" + STUDENT_REGKEY + "=" + 

				encodeURIComponent(registrationKey));

	

		return handleJoinCourse();

	}

}



/*

 * Returns

 * 

 * 0: successful

 * 1: server error

 *

 */

function leaveCourse(courseID)

{

	if(xmlhttp)

	{		

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_DELETECOURSE + "&" + COURSE_ID + "=" + encodeURIComponent(courseID));

	

		return handleLeaveCourse();

	}

}



function logout()

{

	if(xmlhttp)

	{

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_LOGOUT);

	}

	

	handleLogout();

}



function populateEvaluationSubmissionForm(form, submissionList, commentsEnabled)

{

	var counter = 0;

	

	var submissionListLength = submissionList.length;

	for(loop = 0; loop < submissionListLength; loop++)

	{

		counter += 5;

		

		form.elements[counter++].value = parseInt(submissionList[loop].points);

		form.elements[counter++].value = submissionList[loop].justification;

		

		if(commentsEnabled == true)

		{

			form.elements[counter++].value = submissionList[loop].commentsToStudent;

		}

		

		else

		{

			counter += 1;

		}

	}

}







function sortByCourseID(a, b) 

{

    var x = a.courseID.toLowerCase();

    var y = b.courseID.toLowerCase();



    return ((x < y) ? -1 : ((x > y) ? 1 : 0));

}



function sortByCourseName(a, b) 

{

    var x = a.name.toLowerCase();

    var y = b.name.toLowerCase();



    return ((x < y) ? -1 : ((x > y) ? 1 : 0));

}



function sortByID(a, b) 

{

    var x = a.ID.toLowerCase();

    var y = b.ID.toLowerCase();



    return ((x < y) ? -1 : ((x > y) ? 1 : 0));

}





function sortByName(a, b) 

{

    var x = a.name.toLowerCase();

    var y = b.name.toLowerCase();



    return ((x < y) ? -1 : ((x > y) ? 1 : 0));

}



/*

 * Returns

 * 

 * 0: successful

 * 1: server error 

 * 2: deadline passed

 * 3: fields missing

 * 4: fields too long

 * 

 */

function submitEvaluation(submissionList, commentsEnabled)

{

	var submissionListLength = submissionList.length;

	for(loop = 0; loop < submissionListLength; loop++)

	{

		if(submissionList[loop].justification == "" || (submissionList[loop].commentsToStudent == "" &&

				commentsEnabled == true))

		{

			return 3;

		}

		

		if(submissionList[loop].justification.length > 50000 || submissionList[loop].commentsToStudent.length > 50000)

		{

			return 4;

		}

	}

	

	var request = "operation=" + OPERATION_STUDENT_SUBMITEVALUATION + "&" + STUDENT_NUMBEROFSUBMISSIONS +

				  "=" + submissionList.length + "&" + COURSE_ID + "=" + submissionList[0].courseID +

				  "&" + EVALUATION_NAME + "=" + submissionList[0].evaluationName +

				  "&" + STUDENT_TEAMNAME + "=" + submissionList[0].teamName;

	

	for(loop = 0; loop < submissionListLength; loop++)

	{

		request = request + "&" + STUDENT_FROMSTUDENT +  loop + "=" + 

				  encodeURIComponent(submissionList[loop].fromStudent) + "&" +

				  STUDENT_TOSTUDENT + loop + "=" +

				  encodeURIComponent(submissionList[loop].toStudent) + "&" +

				  STUDENT_POINTS + loop + "=" +

				  encodeURIComponent(submissionList[loop].points) + "&" +

				  STUDENT_JUSTIFICATION + loop + "=" +

				  encodeURIComponent(submissionList[loop].justification) + "&" +

				  STUDENT_COMMENTSTOSTUDENT + loop + "=" +

				  encodeURIComponent(submissionList[loop].commentsToStudent);

	}

	

	if(xmlhttp)

	{

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send(request); 

		

	}

	

	return handleSubmitEvaluation();

	

}



function toggleLeaveCourseConfirmation(courseID) {

	var s = confirm("Are you sure you want to leave the course " + courseID + "?");

	if (s == true) {

		doLeaveCourse(courseID);

	} else {

		clearStatusMessage();

	}

	

	document.getElementById(DIV_STATUS).innerHTML = output; 

	document.getElementById(DIV_COURSE_MANAGEMENT).scrollIntoView(true);

}



function toggleSortCoursesByID(courseList) {

	printCourseList(courseList.sort(sortByID), STUDENT);

	courseSortStatus = courseSort.ID;

	document.getElementById("button_sortcourseid").setAttribute("class", "buttonSortAscending");

}



function toggleSortCoursesByName(courseList) {

	printCourseList(courseList.sort(sortByCourseName), STUDENT);

	courseSortStatus = courseSort.name;

	document.getElementById("button_sortcoursename").setAttribute("class", "buttonSortAscending");

}



function toggleSortPastEvaluationsByCourseID(evaluationList) {

	printPastEvaluationList(evaluationList.sort(sortByCourseID));

	evaluationSortStatus = evaluationSort.courseID;

	document.getElementById("button_sortcourseid").setAttribute("class", "buttonSortAscending");

}



function toggleSortPastEvaluationsByName(evaluationList) {

	printPastEvaluationList(evaluationList.sort(sortByName));

	evaluationSortStatus = evaluationSort.name;

	document.getElementById("button_sortname").setAttribute("class", "buttonSortAscending");		

}







/*

 * Returns

 * 

 * 0: successful

 * 1: server error

 *

 */

function unarchiveCourse(courseID) {

	if (xmlhttp) {		

		xmlhttp.open("POST","teammates",false); 

		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");

		xmlhttp.send("operation=" + OPERATION_STUDENT_UNARCHIVECOURSE + "&" + COURSE_ID + "=" + encodeURIComponent(courseID));

	

		return handleUnarchiveCourse();

	}

}



window.onload = function() {

	initializetooltip();

	displayCoursesTab();

}



// DynamicDrive JS mouse-hover

document.onmousemove = positiontip