From 250e71d96747693f40eb7db6eb40ba166b897a96 Mon Sep 17 00:00:00 2001
From: moodler <moodler>
Date: Mon, 28 Jul 2003 08:58:47 +0000
Subject: [PATCH] When a quiz is closing within the next 24 hours, a small
 countdown is shown in the titlebar (drawn with javascript).

An alert is shown at ten minutes, and zero minutes.

This doesn't prevent students from doing anything, but it serves
as a reminder and just looks cool.  ;-)
---
 lang/en/quiz.php     |  3 +++
 mod/quiz/attempt.php | 11 ++++++--
 mod/quiz/jsclock.php | 63 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+), 2 deletions(-)
 create mode 100644 mod/quiz/jsclock.php

diff --git a/lang/en/quiz.php b/lang/en/quiz.php
index be6ed3791c2..8c562f5c4fb 100644
--- a/lang/en/quiz.php
+++ b/lang/en/quiz.php
@@ -40,6 +40,9 @@ $string['choice'] = "Choice";
 $string['choices'] = "Available choices";
 $string['correctanswer'] = "Correct answer";
 $string['correctanswers'] = "Correct answers";
+$string['countdown'] = "Countdown";
+$string['countdownfinished'] = "The quiz is closing, you should submit your answers now.";
+$string['countdowntenminutes'] = "The quiz will be closing in ten minutes.";
 $string['createmultiple'] = "Create multiple questions";
 $string['createnewquestion'] = "Create new question";
 $string['custom'] = "Custom format";
diff --git a/mod/quiz/attempt.php b/mod/quiz/attempt.php
index 03b80fffcb8..c16c8818ef9 100644
--- a/mod/quiz/attempt.php
+++ b/mod/quiz/attempt.php
@@ -173,13 +173,20 @@
     }
 
     print_heading(get_string("attempt", "quiz", $numattempts));
-
     print_simple_box(text_to_html($quiz->intro), "CENTER");
 
 
+/// Add the javascript timer in the title bar if the closing time appears close
+
+    $secondsleft = $quiz->timeclose - time();
+    if ($secondsleft > 0 and $secondsleft < 24*3600) {  // less than a day remaining
+        include("jsclock.php");
+    }
+
+
 /// Print all the questions
 
-    echo "<BR>";
+    echo "<br />";
 
     if (! quiz_print_quiz_questions($quiz)) {
         print_continue("view.php?id=$cm->id");
diff --git a/mod/quiz/jsclock.php b/mod/quiz/jsclock.php
new file mode 100644
index 00000000000..3929452980b
--- /dev/null
+++ b/mod/quiz/jsclock.php
@@ -0,0 +1,63 @@
+<script language="javascript">
+<!--
+/// This Javascript clock provides a little countdown in the title bar
+
+var timerID = null;
+var timerRunning = false;
+var secondsleft = <?php echo $secondsleft ?>;
+var titleafter  = '<?php echo $quiz->name ?>';
+var titlebefore = '<?php echo get_string("countdown", "quiz").": " ?>';
+var alertmessage  = '<?php print_string("countdownfinished", "quiz") ?>';
+var alertmessage10  = '<?php print_string("countdowntenminutes", "quiz") ?>';
+
+function stopclock() {
+    if (timerRunning) {
+        clearTimeout(timerID);
+        timerRunning = false;
+    }
+}
+
+function startclock() {
+    stopclock();
+    showtime();
+}
+
+function showtime() {
+
+    secondsleft = secondsleft - 1;
+
+    if (secondsleft == 600) {
+        alert(alertmessage10);
+    }
+
+    if (secondsleft == 0) {
+        stopclock();
+        document.title = titleafter;
+        return alert(alertmessage);
+
+    } else {
+        current = secondsleft;
+
+        var hours = Math.floor( current / 3600 );
+        current = current - (hours*3600);
+    
+        var minutes =   Math.floor( current / 60 );
+        current = current - (minutes*60);
+    
+        var seconds = current;
+    
+        var timeValue = "" + hours;
+        timeValue  += ((minutes < 10) ? ":0" : ":") + minutes;
+        timeValue  += ((seconds < 10) ? ":0" : ":") + seconds;
+    
+        document.title = titlebefore+timeValue+' '+titleafter;
+        timerID = setTimeout("showtime()",1000);
+        timerRunning = true;
+    }
+}
+
+document.onLoad = startclock();
+
+
+// -- End of JavaScript code -------------- -->
+</script>