mod/lesson/timer.js

   1 /*/////////////////////////////////////////////////////////
   2 // This code is based off of
   3 // "Live Clock Lite" script - Version 1.0
   4 // By Mark Plachetta (astroboy@zip.com.au)
   5 //
   6 // The original script displayed a clock.
   7 // Mark Nielsen modified it to be a countdown timer
   8 // for the lesson module in moodle.
   9 //
  10 //    Below is the code that is used to call this page.
  11 //    echo "<script type=\"text/javascript\">\n";
  12 //        echo "var starttime = ". $timer->starttime . ";\n";
  13 //        echo "var servertime = ". time() . ";\n";
  14 //        echo "var testlength = ". $lesson->maxtime * 60 .";\n";
  15 //        echo "document.write('<script type=\"text/javascript\" src=\"liveclock_lite.js\"><\/script>');\n";
  16 //        echo "window.onload = function () { show_clock(); }";
  17 //    echo "</script>\n";
  18 //
  19 //////////////////////////////////////////////////////////*/
  20
  21     var myfont_face = "Arial";
  22     var myfont_size = "12";
  23     var myfont_color = "#000000";
  24     var myback_color = "#FFFFFF";
  25     var mywidth = 80;
  26     var my12_hour = 1;
  27     var stopclock = 0;
  28     var myclock = '';
  29     var timeleft, hours, minutes, secs;
  30     var javatimeDate = new Date();
  31     var javatime = javatimeDate.getTime();
  32     javatime = Math.floor(javatime/1000);
  33
  34     difference = javatime - servertime;
  35     starttime = starttime + difference;
  36
  37     var dn = "";
  38     var old = "";
  39
  40     if (document.all||document.getElementById) {
  41         document.write('<span id="LiveClockIE" style="width:'+mywidth+'px;"></span>');
  42     } else if (document.layers) {
  43         document.write('<ilayer id="ClockPosNS"><layer width="'+mywidth+'" id="LiveClockNS"></layer></ilayer>');
  44     } else {
  45         old = "true"; show_clock();
  46     }
  47
  48     /*function leave() {  // feable attempt to run a script when someone leaves a timed test early, failed so far
  49         window.onunload = window.open('http://www.google.com','','toolbar=no,menubar=no,location=no,height=500,width=500');
  50     }
  51     leave();*/
  52
  53     function show_clock() {
  54
  55         //show clock in NS 4
  56         if (document.layers)
  57                 document.ClockPosNS.visibility="show"
  58         if (old == "die") { return; }
  59
  60         currentDate = new Date();
  61         current = currentDate.getTime();
  62         current = Math.floor(current/1000);
  63
  64         if (current > starttime + testlength) {
  65             myclock = '';
  66             myclock += '<font style="color:'+myfont_color+'; font-family:'+myfont_face+'; font-size:'+myfont_size+'pt;">';
  67             myclock += "Time is up";
  68             myclock += '</font>';
  69             stopclock = 1;
  70         } else {
  71             timeleft = starttime + testlength - current;
  72             hours = Math.floor(timeleft/3600);
  73             timeleft = timeleft - (hours * 3600);
  74             minutes = Math.floor(timeleft/60);
  75             secs = timeleft - (minutes * 60);
  76
  77             if (secs < 10) {
  78                 secs = "0"+secs;
  79             }
  80             if (minutes < 10) {
  81                 minutes = "0"+minutes;
  82             }
  83             myclock = '';
  84             myclock += '<font style="color:'+myfont_color+'; font-family:'+myfont_face+'; font-size:'+myfont_size+'pt;">';
  85             myclock += hours+":"+minutes+":"+secs;
  86             myclock += '</font>';
  87         }
  88
  89         if (old == "true") {
  90             document.write(myclock);
  91             old = "die"; return;
  92         }
  93
  94         if (document.layers) {
  95             clockpos = document.ClockPosNS;
  96             liveclock = clockpos.document.LiveClockNS;
  97             liveclock.document.write(myclock);
  98             liveclock.document.close();
  99         } else if (document.all) {
 100             LiveClockIE.innerHTML = myclock;
 101         } else if (document.getElementById) {
 102             document.getElementById("LiveClockIE").innerHTML = myclock;
 103         }
 104
 105         if (stopclock == 0) {
 106             setTimeout("show_clock()",1000);
 107         }
 108 }
 109