//
// Language Mentor
// Developing Language Proficiency--Listening
// CONTENT: JavaScript checking of a multiple-choice question
// Student has two tries to answer correctly, only the
// first response counts towards cumulative score.
// Also contains bookmarking and audio control functions.
//
// modified March 2002 to reflect dynamic display of the score in the score.html
// frame with scores to be stored in the title frame.
// functions displayNumbers and updateDisplay were no longer needed and removed.
// similar originals of those functions are found in the dlpr/cat/cat-orig.js
// -rrs
var tries = 0;
var answeredCorrect = 0;
var totalScore = 0;
var savedScore = 0;
var savedTopic = 1;
var curTopic = 1;
var savedDes = "modb";
var daysExpire = 30;
var expires = new Date();
expires.setTime(expires.getTime() + (30 * 24 * 60 * 60 * 1000));
var expiryDate = expires.toGMTString();
function makeArray(n)
{
this.length = n;
for (var i=1; i<=n; i++)
{
this[i] = null;
}
return this;
}
function haveSelected(form)
{
var aT = top.TITLE.document.retainValues.audioToggle.value;
if(aT == 0)
{
form.feedback.value = "You have not listened to the Audio";
form.choice.value = 0;
}
else if(form.choice.value == 0)
{
form.feedback.value = "You have not answered the question";
}
else
{
gotoNext();
}
}
function printscore()
{
document.write("Score = ");
document.write(parent.parent.parent.TITLE.document.retainValues.correctNum.value);
}
function addOne()
{
//
// Regardless of whether we answered correctly or not, we need to make sure
// that since they answered the question, that the current topic number is incremented
// to start them on the next question if they return using a bookmark.
//
curTopic = Math.abs(parent.parent.parent.TITLE.document.retainValues.topicNum.value) + 1;
parent.parent.parent.TITLE.document.retainValues.topicNum.value = curTopic;
//
// Now we can check for incrementing the score as well
//
if(answeredCorrect)
{
totalScore = Math.abs(parent.parent.parent.TITLE.document.retainValues.correctNum.value) + 1;
parent.parent.parent.TITLE.document.retainValues.correctNum.value = totalScore;
//displayNumbers();
parent.F4.SCORE.document.location.reload();
}
} // end addOne
function saveValues(topic)
{
//
// Topic is the beginning topic number we receive from index.htm
// Score should be zero as we are making a fresh start here by not using the bookmark
//
top.TITLE.document.retainValues.correctNum.value = 0;
top.TITLE.document.retainValues.topicNum.value = topic;
}
function setup()
{
tries = 0;
answeredCorrect = 0;
document.ques.choice.value = 0;
}
function check(form)
{
var cans = form.ans.value;
var ch = form.choice.value;
var letters = new makeArray(4);
letters[1] = "a";
letters[2] = "b";
letters[3] = "c";
letters[4] = "d";
var aT = top.TITLE.document.retainValues.audioToggle.value;
if(aT == 0)
{
form.feedback.value = "You have not listened to the Audio";
form.choice.value = 0;
}
else
{
tries = tries + 1;
// users have two tries to get the correct answer HOWEVER
// notice below that only the FIRST try scores a point
if( tries <= 2 )
{
if(ch == cans)
{
form.feedback.value = "CORRECT, click on CONTINUE below";
// only set answeredCorrect on the first try
// this is the users only chance to score a point
if(tries == 1)
answeredCorrect = 1;
}
else
{
if(tries > 1)
{
form.feedback.value = letters[cans] + ". is correct - Click on CONTINUE below";
}
else
{
form.feedback.value = "Try Again";
}
}
}
else
{
form.feedback.value = letters[cans] + ". is correct - Click on CONTINUE below";
}
} // end else
} // end check(form)
//
//
// The following section of code saves the score and load it again the next time the user
// enters the topic--if the user so chooses.
//
//
function checkPlace(topicDes)
{
var thisCookie = ((document.cookie != "") && (document.cookie != null));
savedScore = (thisCookie) ? getCookie("dlplMODBscore") : 0;
savedTopic= (thisCookie) ? getCookie("dlplMODBtopicNum") : 1;
savedDes = topicDes;
if(thisCookie)
{
// A cookie was set, so show the button to return to that place marker
// A place marker means a savedTopic greater than 1 was detected
// Any other storeTopic means they may as well start at the beginning
document.write('\n');
document.write(' \n');
document.write(' | \n');
document.write('\n');
document.write('Text #' + savedTopic + '\n');
document.write('
\n');
document.write('Score = ' + savedScore + '
\n');
document.write('Use your bookmark or select a text below\n');
document.write(' | \n');
}
else
{
// A cookie was not set, so show all buttons to pick a topic number
document.write('\n');
document.write(' \n');
document.write(' | \n');
document.write('\n');
document.write('No bookmark found, select a text below\n');
document.write(' | \n');
}
} // end checkPlace
function getCookie(name)
{
var cookieFound = false;
var start = 0;
var end = 0;
var cookieString = document.cookie;
var i = 0;
// Scan for the field name
while (i <= cookieString.length)
{
start = i;
end = start + name.length;
if (cookieString.substring(start,end) == name)
{
cookieFound = true;
break;
}
i++;
}
// Did we find the field we were looking for?
if (cookieFound)
{
start = end + 1;
end = document.cookie.indexOf(";", start);
if (end < start)
end = document.cookie.length;
return document.cookie.substring(start, end);
}
return "";
} // end getCookie(name)
function newCookie(name,value)
{
document.cookie = name + "=" + escape(value) + "; expires=" + expiryDate;
} // end newCookie
function saveScore()
{
//
// The values are determined in relation to the file accessing this function.
// Since the dlpr/score.htm file accesses this function directly, then it must
// reference the values within its own HTML code, i.e. document.forms......
//
totalScore = Math.abs(parent.parent.parent.TITLE.document.retainValues.correctNum.value);
newCookie("dlplMODBscore", totalScore);
curTopic = Math.abs(parent.parent.parent.TITLE.document.retainValues.topicNum.value);
if(curTopic > 25)
curTopic = 25;
newCookie("dlplMODBtopicNum", curTopic);
alert("Your bookmark has been set");
} // end saveScore
function loadScore()
{
totalScore = savedScore;
top.TITLE.document.retainValues.correctNum.value = savedScore;
top.TITLE.document.retainValues.topicNum.value = savedTopic;
document.location = savedDes + savedTopic + "/index.htm";
} // end loadScore
//
// Audio Control Functions
//
function playAudioClip(sAudioURL)
{
document.playaud.playFile(sAudioURL);
}
function showToggle()
{
alert(top.TITLE.document.retainValues.audioToggle.value);
}
function setToggle(num)
{
top.TITLE.document.retainValues.audioToggle.value = num;
}
function stopSound()
{
document.playaud.stopFile();
}
function remoteCtrlStop()
{
parent.F4.AUDIO.document.playaud.stopFile();
}
function remoteSoundCheck()
{
var aT = top.TITLE.document.retainValues.audioToggle.value;
if(aT != 0)
{
remoteCtrlStop();
top.TITLE.document.retainValues.audioToggle.value = 0;
}
}
function remoteStop()
{
parent.F1.document.playaud.stopFile();
}
function checkSound()
{
var aT = top.TITLE.document.retainValues.audioToggle.value;
if(aT != 0)
{
remoteStop();
top.TITLE.document.retainValues.audioToggle.value = 0;
}
}
function toggleSound(sAudioURL)
{
var aT = top.TITLE.document.retainValues.audioToggle.value;
if((aT == 1) || (aT == 0))
{
document.btns.AUDIO.value="Stop Audio";
top.TITLE.document.retainValues.audioToggle.value = 2;
playAudioClip(sAudioURL);
}
else
{
document.btns.AUDIO.value="Play Audio";
top.TITLE.document.retainValues.audioToggle.value = 1;
stopSound();
}
} // end toggleSound