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<?PHP
// $Id$
/// This page prints a hotpot quiz
require_once("../../config.php");
require_once("lib.php");
$id = optional_param("id"); // Course Module ID, or
$hp = optional_param("hp"); // hotpot ID
if ($id) {
if (! $cm = get_record("course_modules", "id", $id)) {
error("Course Module ID was incorrect");
}
if (! $course = get_record("course", "id", $cm->course)) {
error("Course is misconfigured");
}
if (! $hotpot = get_record("hotpot", "id", $cm->instance)) {
error("Course module is incorrect");
}
} else {
if (! $hotpot = get_record("hotpot", "id", $hp)) {
error("Course module is incorrect");
}
if (! $course = get_record("course", "id", $hotpot->course)) {
error("Course is misconfigured");
}
if (! $cm = get_coursemodule_from_instance("hotpot", $hotpot->id, $course->id)) {
error("Course Module ID was incorrect");
}
}
// set nextpage (for error messages)
$nextpage = "$CFG->wwwroot/course/view.php?id=$course->id";
require_login($course->id);
// header strings
$title = strip_tags($course->shortname.': '.$hotpot->name);
$heading = "$course->fullname";
$target = empty($CFG->framename) ? '' : ' target="'.$CFG->framename.'"';
$navigation = '<a'.$target.' href="'.$CFG->wwwroot.'/mod/hotpot/index.php?id='.$course->id.'">'.get_string("modulenameplural", "hotpot")."</a> -> $hotpot->name";
if ($course->category) {
$navigation = '<a'.$target.' href="'.$CFG->wwwroot.'/course/view.php?id='.$course->id.'">'.$course->shortname.'</a> -> '.$navigation;
}
$button = update_module_button($cm->id, $course->id, get_string("modulename", "hotpot").'" style="font-size:0.75em;');
$loggedinas = '<span class="logininfo">'.user_login_string($course, $USER).'</span>';
$time = time();
if (!isteacher($course->id)) {
// check this quiz is available to this student
// error message, if quiz is unavailable
$error = '';
// check quiz is visible
if (!$cm->visible) {
$error = get_string("activityiscurrentlyhidden");
// check network address
} else if ($hotpot->subnet && !address_in_subnet($_SERVER['REMOTE_ADDR'], $hotpot->subnet)) {
$error = get_string("subneterror", "quiz");
// check number of attempts
} else if ($hotpot->attempts && $hotpot->attempts <= count_records('hotpot_attempts', 'hotpot', $hotpot->id, 'userid', $USER->id)) {
$error = get_string("nomoreattempts", "quiz");
// get password
} else if ($hotpot->password && empty($_POST['hppassword'])) {
print_header($title, $heading, $navigation, "", "", true, $button, $loggedinas, false);
print_heading($hotpot->name);
$boxalign = 'center';
$boxwidth = 500;
if (trim(strip_tags($hotpot->summary))) {
print_simple_box_start($boxalign, $boxwidth);
print '<div align="center">'.format_text($hotpot->summary)."</div>\n";
print_simple_box_end();
print "<br />\n";
}
print '<form name="passwordform" method="post" action="view.php?id='.$cm->id.'">'."\n";
print_simple_box_start($boxalign, $boxwidth);
print '<div align="center">';
print get_string('requirepasswordmessage', 'quiz').'<br /><br />';
print '<b>'.get_string('password').':</b> ';
print '<input name="hppassword" type="password" value=""> ';
print '<input type="submit" value="'.get_string("ok").'"> ';
print "</div>\n";
print_simple_box_end();
print "</form>\n";
print_footer();
exit;
// check password
} else if ($hotpot->password && strcmp($hotpot->password, $_POST['hppassword'])) {
$error = get_string("passworderror", "quiz");
$nextpage = "view.php?id=$cm->id";
// check quiz is open
} else if ($hotpot->timeopen && $hotpot->timeopen > $time) {
$error = get_string("quiznotavailable", "quiz", userdate($hotpot->timeopen))."<BR>\n";
// check quiz is not closed
} else if ($hotpot->timeclose && $hotpot->timeclose < $time) {
$error = get_string("quizclosed", "quiz", userdate($hotpot->timeclose))."<BR>\n";
}
if ($error) {
print_header($title, $heading, $navigation, "", "", true, $button, $loggedinas, false);
notice($error, $nextpage);
//
// script stops here, if quiz is unavailable to student
//
}
}
$available_msg = '';
if (!empty($hotpot->timeclose) && $hotpot->timeclose > $time) {
// quiz is available until 'timeclose'
$available_msg = get_string("quizavailable", "quiz", userdate($hotpot->timeclose))."<BR>\n";
}
// open and parse the source file
if(!$hp = new hotpot_xml_quiz($hotpot)) {
error("Quiz is unavailable at the moment");
}
$frameset = isset($_GET['frameset']) ? $_GET['frameset'] : '';
// if HTML is being requested ...
if (empty($_GET['js']) && empty($_GET['css'])) {
$n = $hotpot->navigation;
if (($n!=HOTPOT_NAVIGATION_FRAME && $n!=HOTPOT_NAVIGATION_IFRAME) || $frameset=='main') {
add_to_log($course->id, "hotpot", "view", "view.php?id=$cm->id", "$hotpot->id", "$cm->id");
$attemptid = hotpot_add_attempt($hotpot->id);
if (! is_numeric($attemptid)) {
error('Could not insert attempt record: '.$db->ErrorMsg);
}
if ($n!=HOTPOT_NAVIGATION_BUTTONS) {
$hp->remove_nav_buttons();
}
$hp->adjust_media_urls();
$hp->insert_submission_form($attemptid);
if ($n==HOTPOT_NAVIGATION_GIVEUP) {
$hp->insert_giveup_form($attemptid);
}
}
}
// insert hot-potatoes.js
$hp->insert_script(HOTPOT_JS);
// extract <head> tag
$head = '';
$pattern = '|^(.*)<head([^>]*)>(.*?)</head>|is';
if (preg_match($pattern, $hp->html, $matches)) {
$head = $matches[3];
}
// extract <style> tags
$styles = '';
$pattern = '|<style([^>]*)>(.*?)</style>|is';
if (preg_match_all($pattern, $head, $matches)) {
$count = count($matches[0]);
for ($i=0; $i<$count; $i++) {
$styles .= $matches[0][$i]."\n";
$head = str_replace($matches[0][$i], '', $head);
}
}
// extract <script> tags
$scripts = '';
$pattern = '|<script([^>]*)>(.*?)</script>|is';
if (preg_match_all($pattern, $head, $matches)) {
$count = count($matches[0]);
for ($i=0; $i<$count; $i++) {
$scripts .= $matches[0][$i]."\n";
$head = str_replace($matches[0][$i], '', $head);
}
}
// extract <body> tags
$body = '';
$bodytags = '';
$pattern = '|^(.*)<body([^>]*)>(.*?)</body>|is';
if (preg_match($pattern, $hp->html, $matches)) {
$bodytags = $matches[2];
$body = $matches[3];
// workaround to ensure javascript onload routine for quiz is always executed
// $bodytags will only be inserted into the <body ...> tag
// if it is included in the theme/$CFG->theme/header.html,
// so some old or modified themes may not insert $bodytags
if (preg_match('/onload=("|\')(.*?)(\\1)/i', $bodytags, $matches)) {
$body .= ""
.'<SCRIPT type="text/javascript">'."\n"
."<!--\n"
." var s = (typeof(window.onload)=='function') ? onload.toString() : '';\n"
." if (s.indexOf('".$matches[2]."')<0) {\n"
." if (s=='') {\n" // no previous onload
." window.onload = new Function('".$matches[2]."');\n"
." } else {\n"
." window.onload_hotpot = onload;\n"
." window.onload = new Function('window.onload_hotpot();' + '".$matches[2]."');\n"
." }\n"
." }\n"
."//-->\n"
."</SCRIPT>\n"
;
}
}
$footer = '</body></html>';
// print the quiz to the browser
if (isset($_GET['js'])) {
print($scripts);
exit;
}
if (isset($_GET['css'])) {
print($styles);
exit;
}
switch ($hotpot->navigation) {
case HOTPOT_NAVIGATION_BAR:
//update_module_button($cm->id, $course->id, $strmodulename.'" style="font-size:0.8em')
print_header(
$title, $heading, $navigation,
"", $head.$styles.$scripts, true, $button,
$loggedinas, false, $bodytags
);
if (!empty($available_msg)) {
notify($available_msg);
}
print $body.$footer;
break;
case HOTPOT_NAVIGATION_FRAME:
switch ($frameset) {
case 'top':
print_header(
$title, $heading, $navigation,
"", "", true, $button,
$loggedinas
);
print $footer;
break;
case 'main':
if (!empty($available_msg)) {
$hp->insert_message('<!-- BeginTopNavButtons -->', $available_msg);
}
print $hp->html;
break;
default:
print "<HTML>\n";
print "<HEAD><TITLE>$title</TITLE></HEAD>\n";
print "<FRAMESET rows=85,*>\n";
print "<FRAME src=\"view.php?id=$cm->id&frameset=top\">\n";
print "<FRAME src=\"view.php?id=$cm->id&frameset=main\">\n";
print "</FRAMESET>\n";
print "</HTML>\n";
break;
} // end switch $frameset
break;
case HOTPOT_NAVIGATION_IFRAME:
switch ($frameset) {
case 'main':
print $hp->html;
break;
default:
$iframe_id = 'hotpot_iframe';
$bodytags = " onload=\"set_iframe_height('$iframe_id')\"";
$iframe_js = '<SCRIPT src="iframe.js" type="text/javascript" language="javascript">'."\n";
print_header(
$title, $heading, $navigation,
"", $head.$styles.$scripts.$iframe_js, true, $button,
$loggedinas, false, $bodytags
);
if (!empty($available_msg)) {
notify($available_msg);
}
print "<IFRAME id=\"$iframe_id\" src=\"view.php?id=$cm->id&frameset=main\" height=\"100%\" width=\"100%\">";
print "<ILAYER name=\"$iframe_id\" src=\"view.php?id=$cm->id&frameset=main\" height=\"100%\" width=\"100%\">";
print "</ILAYER>\n";
print "</IFRAME>\n";
print $footer;
break;
} // end switch $frameset
break;
default:
// HOTPOT_NAVIGATION_BUTTONS
// HOTPOT_NAVIGATION_GIVEUP
// HOTPOT_NAVIGATION_NONE
if (!empty($available_msg)) {
$hp->insert_message('<!-- BeginTopNavButtons -->', $available_msg);
}
print($hp->html);
}
?>
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