MDL-20534 lti: various fixes
[moodle.git] / mod / lti / view.php
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dbb0fec9 1<?php
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2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
16//
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17// This file is part of BasicLTI4Moodle
18//
19// BasicLTI4Moodle is an IMS BasicLTI (Basic Learning Tools for Interoperability)
20// consumer for Moodle 1.9 and Moodle 2.0. BasicLTI is a IMS Standard that allows web
21// based learning tools to be easily integrated in LMS as native ones. The IMS BasicLTI
22// specification is part of the IMS standard Common Cartridge 1.1 Sakai and other main LMS
23// are already supporting or going to support BasicLTI. This project Implements the consumer
24// for Moodle. Moodle is a Free Open source Learning Management System by Martin Dougiamas.
25// BasicLTI4Moodle is a project iniciated and leaded by Ludo(Marc Alier) and Jordi Piguillem
26// at the GESSI research group at UPC.
27// SimpleLTI consumer for Moodle is an implementation of the early specification of LTI
28// by Charles Severance (Dr Chuck) htp://dr-chuck.com , developed by Jordi Piguillem in a
29// Google Summer of Code 2008 project co-mentored by Charles Severance and Marc Alier.
30//
31// BasicLTI4Moodle is copyright 2009 by Marc Alier Forment, Jordi Piguillem and Nikolas Galanis
32// of the Universitat Politecnica de Catalunya http://www.upc.edu
33// Contact info: Marc Alier Forment granludo @ gmail.com or marc.alier @ upc.edu
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34
35/**
61eb12d4 36 * This file contains all necessary code to view a lti activity instance
dbb0fec9 37 *
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38 * @package mod
39 * @subpackage lti
40 * @copyright 2009 Marc Alier, Jordi Piguillem, Nikolas Galanis
dbb0fec9 41 * marc.alier@upc.edu
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42 * @copyright 2009 Universitat Politecnica de Catalunya http://www.upc.edu
43 * @author Marc Alier
44 * @author Jordi Piguillem
45 * @author Nikolas Galanis
46 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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47 */
48
49require_once('../../config.php');
50require_once($CFG->dirroot.'/mod/lti/lib.php');
51require_once($CFG->dirroot.'/mod/lti/locallib.php');
52
53$id = optional_param('id', 0, PARAM_INT); // Course Module ID, or
a55c3619 54$l = optional_param('l', 0, PARAM_INT); // lti ID
dbb0fec9 55
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56if ($l) { // Two ways to specify the module
57 $lti = $DB->get_record('lti', array('id' => $l), '*', MUST_EXIST);
58 $cm = get_coursemodule_from_instance('lti', $lti->id, $lti->course, false, MUST_EXIST);
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59
60} else {
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61 $cm = get_coursemodule_from_id('lti', $id, 0, false, MUST_EXIST);
62 $lti = $DB->get_record('lti', array('id' => $cm->instance), '*', MUST_EXIST);
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63}
64
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65$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
66
67$tool = lti_get_tool_by_url_match($lti->toolurl);
ea04a9f9 68if ($tool) {
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69 $toolconfig = lti_get_type_config($tool->id);
70} else {
c4d80efe 71 $toolconfig = array();
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72}
73
74$PAGE->set_cm($cm, $course); // set's up global $COURSE
75$context = get_context_instance(CONTEXT_MODULE, $cm->id);
76$PAGE->set_context($context);
77
78$url = new moodle_url('/mod/lti/view.php', array('id'=>$cm->id));
79$PAGE->set_url($url);
80
a55c3619 81$launchcontainer = lti_get_launch_container($lti, $toolconfig);
cca9d3f7 82
ea04a9f9 83if ($launchcontainer == LTI_LAUNCH_CONTAINER_EMBED_NO_BLOCKS) {
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84 $PAGE->set_pagelayout('frametop'); //Most frametops don't include footer, and pre-post blocks
85 $PAGE->blocks->show_only_fake_blocks(); //Disable blocks for layouts which do include pre-post blocks
ea04a9f9 86} else if ($launchcontainer == LTI_LAUNCH_CONTAINER_REPLACE_MOODLE_WINDOW) {
cca9d3f7 87 redirect('launch.php?id=' . $cm->id);
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88} else {
89 $PAGE->set_pagelayout('incourse');
90}
91
92require_login($course);
93
a55c3619 94add_to_log($course->id, "lti", "view", "view.php?id=$cm->id", "$lti->id");
dbb0fec9 95
a55c3619 96$pagetitle = strip_tags($course->shortname.': '.format_string($lti->name));
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97$PAGE->set_title($pagetitle);
98$PAGE->set_heading($course->fullname);
99
100/// Print the page header
101echo $OUTPUT->header();
102
a55c3619 103if ($lti->showtitle) {
dbb0fec9 104 /// Print the main part of the page
a55c3619 105 echo $OUTPUT->heading(format_string($lti->name));
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106}
107
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108if ($lti->showdescription && $lti->intro) {
109 echo $OUTPUT->box($lti->intro, 'generalbox description', 'intro');
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110}
111
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112if ( $launchcontainer == LTI_LAUNCH_CONTAINER_WINDOW ) {
113 echo "<script language=\"javascript\">//<![CDATA[\n";
114 echo "window.open('launch.php?id=".$cm->id."','lti');";
115 echo "//]]\n";
116 echo "</script>\n";
117 echo "<p>".get_string("basiclti_in_new_window", "lti")."</p>\n";
118} else {
119 // Request the launch content with an object tag
cca9d3f7 120 echo '<object id="contentframe" height="600px" width="100%" type="text/html" data="launch.php?id='.$cm->id.'"></object>';
e27cb316 121
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122 //Output script to make the object tag be as large as possible
123 $resize = <<<'SCRIPT'
124 <script type='text/javascript'>
125 //<![CDATA[
126 (function(){
127 //Take scrollbars off the outer document to prevent double scroll bar effect
128 document.body.style.overflow = 'hidden';
129
130 var dom = YAHOO.util.Dom;
131 var frame = document.getElementById('contentframe');
e27cb316 132
a390d453 133 var padding = 15; //The bottom of the iframe wasn't visible on some themes. Probably because of border widths, etc.
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134
135 var lastHeight;
136
137 var resize = function(){
138 var viewportHeight = dom.getViewportHeight();
139
140 if(lastHeight !== Math.min(dom.getDocumentHeight(), viewportHeight)){
e27cb316 141
a390d453 142 frame.style.height = viewportHeight - dom.getY(frame) - padding + 'px';
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143
144 lastHeight = Math.min(dom.getDocumentHeight(), dom.getViewportHeight());
145 }
146 };
147
148 resize();
149
150 setInterval(resize, 250);
151 })();
152 //]]
153 </script>
154SCRIPT;
e27cb316 155
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156 echo $resize;
157}
158
159
160/// Finish the page
161echo $OUTPUT->footer();