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// This file is part of BasicLTI4Moodle
// BasicLTI4Moodle is an IMS BasicLTI (Basic Learning Tools for Interoperability)
// consumer for Moodle 1.9 and Moodle 2.0. BasicLTI is a IMS Standard that allows web
// based learning tools to be easily integrated in LMS as native ones. The IMS BasicLTI
// specification is part of the IMS standard Common Cartridge 1.1 Sakai and other main LMS
// are already supporting or going to support BasicLTI. This project Implements the consumer
// for Moodle. Moodle is a Free Open source Learning Management System by Martin Dougiamas.
// BasicLTI4Moodle is a project iniciated and leaded by Ludo(Marc Alier) and Jordi Piguillem
// at the GESSI research group at UPC.
// SimpleLTI consumer for Moodle is an implementation of the early specification of LTI
// by Charles Severance (Dr Chuck) htp:// , developed by Jordi Piguillem in a
// Google Summer of Code 2008 project co-mentored by Charles Severance and Marc Alier.
// BasicLTI4Moodle is copyright 2009 by Marc Alier Forment, Jordi Piguillem and Nikolas Galanis
// of the Universitat Politecnica de Catalunya
// Contact info: Marc Alier Forment granludo @ or marc.alier @
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <>.
* This file contains all necessary code to view a basiclti activity instance
* @package blti
* @copyright 2009 Marc Alier, Jordi Piguillem, Nikolas Galanis
* @copyright 2009 Universitat Politecnica de Catalunya
* @author Marc Alier
* @author Jordi Piguillem
* @author Nikolas Galanis
* @license GNU GPL v3 or later
$id = optional_param('id', 0, PARAM_INT); // Course Module ID, or
$a = optional_param('a', 0, PARAM_INT); // blti ID
if ($id) {
if (! $cm = get_coursemodule_from_id("blti", $id)) {
throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course Module ID was incorrect');
if (! $course = $DB->get_record("course", array("id" => $cm->course))) {
throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course is misconfigured');
if (! $basiclti = $DB->get_record("blti", array("id" => $cm->instance))) {
throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course module is incorrect');
} else {
if (! $basiclti = $DB->get_record("blti", array("id" => $a))) {
throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course module is incorrect');
if (! $course = $DB->get_record("course", array("id" => $basiclti->course))) {
throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course is misconfigured');
if (! $cm = get_coursemodule_from_instance("blti", $basiclti->id, $course->id)) {
throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course Module ID was incorrect');
$tool = blti_get_tool_by_url_match($basiclti->toolurl);
$toolconfig = blti_get_type_config($tool->id);
$PAGE->set_cm($cm, $course); // set's up global $COURSE
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
$url = new moodle_url('/mod/blti/view.php', array('id'=>$cm->id));
$launchcontainer = $basiclti->launchcontainer == BLTI_LAUNCH_CONTAINER_DEFAULT ?
$toolconfig['launchcontainer'] :
$PAGE->set_pagelayout('frametop'); //Use the frametop layout to get the navbar, but no footer
$PAGE->blocks->show_only_fake_blocks(); //Disable blocks
} else {
add_to_log($course->id, "blti", "view", "view.php?id=$cm->id", "$basiclti->id");
$pagetitle = strip_tags($course->shortname.': '.format_string($basiclti->name));
/// Print the page header
echo $OUTPUT->header();
if($basiclti->showtitle) {
/// Print the main part of the page
echo $OUTPUT->heading(format_string($basiclti->name));
if($basiclti->showdescription && $basiclti->intro){
echo $OUTPUT->box($basiclti->intro, 'generalbox description', 'intro');
if ($basiclti->instructorchoiceacceptgrades == 1) {
echo '<div class="reportlink">'.submittedlink($cm).'</div>';
if ( $launchcontainer == BLTI_LAUNCH_CONTAINER_WINDOW ) {
echo "<script language=\"javascript\">//<![CDATA[\n";
echo "'launch.php?id=".$cm->id."','blti');";
echo "//]]\n";
echo "</script>\n";
echo "<p>".get_string("basiclti_in_new_window", "blti")."</p>\n";
} else {
// Request the launch content with an object tag
echo '<object id="contentframe" height="600px" width="100%" type="text/html" data="launch.php?id='.$cm->id.'&amp;withobject=true"></object>';
//Output script to make the object tag be as large as possible
$resize = <<<'SCRIPT'
<script type='text/javascript'>
//Take scrollbars off the outer document to prevent double scroll bar effect = 'hidden';
var dom = YAHOO.util.Dom;
var frame = document.getElementById('contentframe');
var lastHeight;
var resize = function(){
var viewportHeight = dom.getViewportHeight();
if(lastHeight !== Math.min(dom.getDocumentHeight(), viewportHeight)){ = viewportHeight - dom.getY(frame) + 'px';
lastHeight = Math.min(dom.getDocumentHeight(), dom.getViewportHeight());
setInterval(resize, 250);
echo $resize;
/// Finish the page
echo $OUTPUT->footer();
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