MDL-20534 lti: A3, whitespace fixes (Changes by stronk7)
[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$id = optional_param('id', 0, PARAM_INT); // Course Module ID, or
54$a = optional_param('a', 0, PARAM_INT); // lti ID
55
56if ($id) {
57 if (! $cm = get_coursemodule_from_id("lti", $id)) {
58 throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course Module ID was incorrect');
59 }
60
61 if (! $course = $DB->get_record("course", array("id" => $cm->course))) {
62 throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course is misconfigured');
63 }
64
65 if (! $basiclti = $DB->get_record("lti", array("id" => $cm->instance))) {
66 throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course module is incorrect');
67 }
68
69} else {
70 if (! $basiclti = $DB->get_record("lti", array("id" => $a))) {
71 throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course module is incorrect');
72 }
73 if (! $course = $DB->get_record("course", array("id" => $basiclti->course))) {
74 throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course is misconfigured');
75 }
76 if (! $cm = get_coursemodule_from_instance("lti", $basiclti->id, $course->id)) {
77 throw new moodle_exception('generalexceptionmessage', 'error', '', 'Course Module ID was incorrect');
78 }
79}
80
81$tool = lti_get_tool_by_url_match($basiclti->toolurl);
82if($tool){
83 $toolconfig = lti_get_type_config($tool->id);
84} else {
c4d80efe 85 $toolconfig = array();
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86}
87
88$PAGE->set_cm($cm, $course); // set's up global $COURSE
89$context = get_context_instance(CONTEXT_MODULE, $cm->id);
90$PAGE->set_context($context);
91
92$url = new moodle_url('/mod/lti/view.php', array('id'=>$cm->id));
93$PAGE->set_url($url);
94
57d1dffd 95$launchcontainer = lti_get_launch_container($basiclti, $toolconfig);
cca9d3f7 96
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97if($launchcontainer == LTI_LAUNCH_CONTAINER_EMBED_NO_BLOCKS){
98 $PAGE->set_pagelayout('frametop'); //Most frametops don't include footer, and pre-post blocks
99 $PAGE->blocks->show_only_fake_blocks(); //Disable blocks for layouts which do include pre-post blocks
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100} else if($launchcontainer == LTI_LAUNCH_CONTAINER_REPLACE_MOODLE_WINDOW) {
101 redirect('launch.php?id=' . $cm->id);
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102} else {
103 $PAGE->set_pagelayout('incourse');
104}
105
106require_login($course);
107
108add_to_log($course->id, "lti", "view", "view.php?id=$cm->id", "$basiclti->id");
109
110$pagetitle = strip_tags($course->shortname.': '.format_string($basiclti->name));
111$PAGE->set_title($pagetitle);
112$PAGE->set_heading($course->fullname);
113
114/// Print the page header
115echo $OUTPUT->header();
116
117if($basiclti->showtitle) {
118 /// Print the main part of the page
119 echo $OUTPUT->heading(format_string($basiclti->name));
120}
121
122if($basiclti->showdescription && $basiclti->intro){
123 echo $OUTPUT->box($basiclti->intro, 'generalbox description', 'intro');
124}
125
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126if ( $launchcontainer == LTI_LAUNCH_CONTAINER_WINDOW ) {
127 echo "<script language=\"javascript\">//<![CDATA[\n";
128 echo "window.open('launch.php?id=".$cm->id."','lti');";
129 echo "//]]\n";
130 echo "</script>\n";
131 echo "<p>".get_string("basiclti_in_new_window", "lti")."</p>\n";
132} else {
133 // Request the launch content with an object tag
cca9d3f7 134 echo '<object id="contentframe" height="600px" width="100%" type="text/html" data="launch.php?id='.$cm->id.'"></object>';
e27cb316 135
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136 //Output script to make the object tag be as large as possible
137 $resize = <<<'SCRIPT'
138 <script type='text/javascript'>
139 //<![CDATA[
140 (function(){
141 //Take scrollbars off the outer document to prevent double scroll bar effect
142 document.body.style.overflow = 'hidden';
143
144 var dom = YAHOO.util.Dom;
145 var frame = document.getElementById('contentframe');
e27cb316 146
a390d453 147 var padding = 15; //The bottom of the iframe wasn't visible on some themes. Probably because of border widths, etc.
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148
149 var lastHeight;
150
151 var resize = function(){
152 var viewportHeight = dom.getViewportHeight();
153
154 if(lastHeight !== Math.min(dom.getDocumentHeight(), viewportHeight)){
e27cb316 155
a390d453 156 frame.style.height = viewportHeight - dom.getY(frame) - padding + 'px';
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157
158 lastHeight = Math.min(dom.getDocumentHeight(), dom.getViewportHeight());
159 }
160 };
161
162 resize();
163
164 setInterval(resize, 250);
165 })();
166 //]]
167 </script>
168SCRIPT;
e27cb316 169
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170 echo $resize;
171}
172
173
174/// Finish the page
175echo $OUTPUT->footer();