1 // This file is part of Moodle - http://moodle.org/
3 // Moodle is free software: you can redistribute it and/or modify
4 // it under the terms of the GNU General Public License as published by
5 // the Free Software Foundation, either version 3 of the License, or
6 // (at your option) any later version.
8 // Moodle is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 // GNU General Public License for more details.
13 // You should have received a copy of the GNU General Public License
14 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
17 * Javascript library for enableing a drag and drop upload to courses
21 * @copyright 2012 Davo Smith
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
24 M.course_dndupload = {
27 // URL for upload requests
28 url: M.cfg.wwwroot + '/course/dndupload.php',
29 // maximum size of files allowed in this form
31 // ID of the course we are on
33 // Data about the different file/data handlers that are available
35 // Nasty hack to distinguish between dragenter(first entry),
36 // dragenter+dragleave(moving between child elements) and dragleave (leaving element)
38 // Used to keep track of the section we are dragging across - to make
39 // spotting movement between sections more reliable
41 // Used to store the pending uploads whilst the user is being asked for further input
43 // True if the there is currently a dialog being shown (asking for a name, or giving a
44 // choice of file handlers)
46 // An array containing the last selected file handler for each file type
49 // The following are used to identify specific parts of the course page
51 // The type of HTML element that is a course section
52 sectiontypename: 'li',
53 // The classes that an element must have to be identified as a course section
54 sectionclasses: ['section', 'main'],
55 // The ID of the main content area of the page (for adding the 'status' div)
56 pagecontentid: 'page',
57 // The selector identifying the list of modules within a section (note changing this may require
58 // changes to the get_mods_element function)
59 modslistselector: 'ul.section',
62 * Initalise the drag and drop upload interface
63 * Note: one and only one of options.filemanager and options.formcallback must be defined
65 * @param Y the YUI object
66 * @param object options {
67 * courseid: ID of the course we are on
68 * maxbytes: maximum size of files allowed in this form
69 * handlers: Data about the different file/data handlers that are available
72 init: function(Y, options) {
75 if (!this.browser_supported()) {
76 return; // Browser does not support the required functionality
79 this.maxbytes = options.maxbytes;
80 this.courseid = options.courseid;
81 this.handlers = options.handlers;
82 this.uploadqueue = new Array();
83 this.lastselected = new Array();
85 var sectionselector = this.sectiontypename + '.' + this.sectionclasses.join('.');
86 var sections = this.Y.all(sectionselector);
87 if (sections.isEmpty()) {
88 return; // No sections - incompatible course format or front page.
90 sections.each( function(el) {
91 this.add_preview_element(el);
95 if (options.showstatus) {
96 this.add_status_div();
101 * Add a div element to tell the user that drag and drop upload
102 * is available (or to explain why it is not available)
104 add_status_div: function() {
105 var coursecontents = document.getElementById(this.pagecontentid);
106 if (!coursecontents) {
110 var div = document.createElement('div');
111 div.id = 'dndupload-status';
112 div.style.opacity = 0.0;
113 coursecontents.insertBefore(div, coursecontents.firstChild);
117 var handlefile = (this.handlers.filehandlers.length > 0);
118 var handletext = false;
119 var handlelink = false;
121 for (i=0; i<this.handlers.types.length; i++) {
122 switch (this.handlers.types[i].identifier) {
132 $msgident = 'dndworking';
142 div.setContent(M.util.get_string($msgident, 'moodle'));
144 var fadeanim = new Y.Anim({
145 node: '#dndupload-status',
157 fadeanim.once('end', function(e) {
158 this.set('reverse', 1);
159 Y.later(3000, this, 'run', null, false);
165 * Check the browser has the required functionality
166 * @return true if browser supports drag/drop upload
168 browser_supported: function() {
169 if (typeof FileReader == 'undefined') {
172 if (typeof FormData == 'undefined') {
179 * Initialise drag events on node container, all events need
180 * to be processed for drag and drop to work
181 * @param el the element to add events to
183 init_events: function(el) {
184 this.Y.on('dragenter', this.drag_enter, el, this);
185 this.Y.on('dragleave', this.drag_leave, el, this);
186 this.Y.on('dragover', this.drag_over, el, this);
187 this.Y.on('drop', this.drop, el, this);
191 * Work out which course section a given element is in
192 * @param el the child DOM element within the section
193 * @return the DOM element representing the section
195 get_section: function(el) {
196 var sectionclasses = this.sectionclasses;
197 return el.ancestor( function(test) {
199 for (i=0; i<sectionclasses.length; i++) {
200 if (!test.hasClass(sectionclasses[i])) {
209 * Work out the number of the section we have been dropped on to, from the section element
210 * @param DOMElement section the selected section
211 * @return int the section number
213 get_section_number: function(section) {
214 var sectionid = section.get('id').split('-');
215 if (sectionid.length < 2 || sectionid[0] != 'section') {
218 return parseInt(sectionid[1]);
222 * Check if the event includes data of the given type
223 * @param e the event details
224 * @param type the data type to check for
225 * @return true if the data type is found in the event data
227 types_includes: function(e, type) {
229 var types = e._event.dataTransfer.types;
230 for (i=0; i<types.length; i++) {
231 if (types[i] == type) {
239 * Look through the event data, checking it against the registered data types
240 * (in order of priority) and return details of the first matching data type
241 * @param e the event details
242 * @return mixed false if not found or an object {
243 * realtype: the type as given by the browser
244 * addmessage: the message to show to the user during dragging
245 * namemessage: the message for requesting a name for the resource from the user
246 * type: the identifier of the type (may match several 'realtype's)
249 drag_type: function(e) {
250 // Check there is some data attached.
251 if (e._event.dataTransfer === null) {
254 if (e._event.dataTransfer.types === null) {
257 if (e._event.dataTransfer.types.length == 0) {
261 // Check for files first.
262 if (this.types_includes(e, 'Files')) {
263 if (e.type != 'drop' || e._event.dataTransfer.files.length != 0) {
264 if (this.handlers.filehandlers.length == 0) {
265 return false; // No available file handlers - ignore this drag.
269 addmessage: M.util.get_string('addfilehere', 'moodle'),
270 namemessage: null, // Should not be asked for anyway
276 // Check each of the registered types.
277 var types = this.handlers.types;
278 for (var i=0; i<types.length; i++) {
279 // Check each of the different identifiers for this type
280 var dttypes = types[i].datatransfertypes;
281 for (var j=0; j<dttypes.length; j++) {
282 if (this.types_includes(e, dttypes[j])) {
284 realtype: dttypes[j],
285 addmessage: types[i].addmessage,
286 namemessage: types[i].namemessage,
287 type: types[i].identifier,
288 handlers: types[i].handlers
293 return false; // No types we can handle
297 * Check the content of the drag/drop includes a type we can handle, then, if
298 * it is, notify the browser that we want to handle it
300 * @return string type of the event or false
302 check_drag: function(e) {
303 var type = this.drag_type(e);
305 // Notify browser that we will handle this drag/drop
313 * Handle a dragenter event: add a suitable 'add here' message
314 * when a drag event occurs, containing a registered data type
315 * @param e event data
316 * @return false to prevent the event from continuing to be processed
318 drag_enter: function(e) {
319 if (!(type = this.check_drag(e))) {
323 var section = this.get_section(e.currentTarget);
328 if (this.currentsection && this.currentsection != section) {
329 this.currentsection = section;
333 if (this.entercount > 2) {
339 this.show_preview_element(section, type);
345 * Handle a dragleave event: remove the 'add here' message (if present)
346 * @param e event data
347 * @return false to prevent the event from continuing to be processed
349 drag_leave: function(e) {
350 if (!this.check_drag(e)) {
355 if (this.entercount == 1) {
359 this.currentsection = null;
361 this.hide_preview_element();
366 * Handle a dragover event: just prevent the browser default (necessary
367 * to allow drag and drop handling to work)
368 * @param e event data
369 * @return false to prevent the event from continuing to be processed
371 drag_over: function(e) {
377 * Handle a drop event: hide the 'add here' message, check the attached
378 * data type and start the upload process
379 * @param e event data
380 * @return false to prevent the event from continuing to be processed
383 if (!(type = this.check_drag(e))) {
387 this.hide_preview_element();
389 // Work out the number of the section we are on (from its id)
390 var section = this.get_section(e.currentTarget);
391 var sectionnumber = this.get_section_number(section);
393 // Process the file or the included data
394 if (type.type == 'Files') {
395 var files = e._event.dataTransfer.files;
396 for (var i=0, f; f=files[i]; i++) {
397 this.handle_file(f, section, sectionnumber);
400 var contents = e._event.dataTransfer.getData(type.realtype);
402 this.handle_item(type, contents, section, sectionnumber);
410 * Find or create the 'ul' element that contains all of the module
411 * instances in this section
412 * @param section the DOM element representing the section
413 * @return false to prevent the event from continuing to be processed
415 get_mods_element: function(section) {
416 // Find the 'ul' containing the list of mods
417 var modsel = section.one(this.modslistselector);
419 // Create the above 'ul' if it doesn't exist
420 var modsel = document.createElement('ul');
421 modsel.className = 'section img-text';
422 var contentel = section.get('children').pop();
423 var brel = contentel.get('children').pop();
424 contentel.insertBefore(modsel, brel);
425 modsel = this.Y.one(modsel);
432 * Add a new dummy item to the list of mods, to be replaced by a real
433 * item & link once the AJAX upload call has completed
434 * @param name the label to show in the element
435 * @param section the DOM element reperesenting the course section
436 * @return DOM element containing the new item
438 add_resource_element: function(name, section) {
439 var modsel = this.get_mods_element(section);
443 li: document.createElement('li'),
444 div: document.createElement('div'),
445 a: document.createElement('a'),
446 icon: document.createElement('img'),
447 namespan: document.createElement('span'),
448 groupingspan: document.createElement('span'),
449 progressouter: document.createElement('span'),
450 progress: document.createElement('span')
453 resel.li.className = 'activity resource modtype_resource';
455 resel.div.className = 'mod-indent';
456 resel.li.appendChild(resel.div);
459 resel.div.appendChild(resel.a);
461 resel.icon.src = M.util.image_url('i/ajaxloader');
462 resel.icon.className = 'activityicon';
463 resel.a.appendChild(resel.icon);
465 resel.a.appendChild(document.createTextNode(' '));
467 resel.namespan.className = 'instancename';
468 resel.namespan.innerHTML = name;
469 resel.a.appendChild(resel.namespan);
471 resel.div.appendChild(document.createTextNode(' '));
473 resel.groupingspan.className = 'groupinglabel';
474 resel.div.appendChild(resel.groupingspan);
476 resel.progressouter.className = 'dndupload-progress-outer';
477 resel.progress.className = 'dndupload-progress-inner';
478 resel.progress.innerHTML = ' ';
479 resel.progressouter.appendChild(resel.progress);
480 resel.div.appendChild(resel.progressouter);
482 modsel.insertBefore(resel.li, modsel.get('children').pop()); // Leave the 'preview element' at the bottom
488 * Hide any visible dndupload-preview elements on the page
490 hide_preview_element: function() {
491 this.Y.all('li.dndupload-preview').addClass('dndupload-hidden');
495 * Unhide the preview element for the given section and set it to display
496 * the correct message
497 * @param section the YUI node representing the selected course section
498 * @param type the details of the data type detected in the drag (including the message to display)
500 show_preview_element: function(section, type) {
501 this.hide_preview_element();
502 var preview = section.one('li.dndupload-preview').removeClass('dndupload-hidden');
503 preview.one('span').setContent(type.addmessage);
507 * Add the preview element to a course section. Note: this needs to be done before 'addEventListener'
508 * is called, otherwise Firefox will ignore events generated when the mouse is over the preview
509 * element (instead of passing them up to the parent element)
510 * @param section the YUI node representing the selected course section
512 add_preview_element: function(section) {
513 var modsel = this.get_mods_element(section);
515 li: document.createElement('li'),
516 div: document.createElement('div'),
517 icon: document.createElement('img'),
518 namespan: document.createElement('span')
521 preview.li.className = 'dndupload-preview dndupload-hidden';
523 preview.div.className = 'mod-indent';
524 preview.li.appendChild(preview.div);
526 preview.icon.src = M.util.image_url('t/addfile');
527 preview.div.appendChild(preview.icon);
529 preview.div.appendChild(document.createTextNode(' '));
531 preview.namespan.className = 'instancename';
532 preview.namespan.innerHTML = M.util.get_string('addfilehere', 'moodle');
533 preview.div.appendChild(preview.namespan);
535 modsel.appendChild(preview.li);
539 * Find the registered handler for the given file type. If there is more than one, ask the
540 * user which one to use. Then upload the file to the server
541 * @param file the details of the file, taken from the FileList in the drop event
542 * @param section the DOM element representing the selected course section
543 * @param sectionnumber the number of the selected course section
545 handle_file: function(file, section, sectionnumber) {
546 var handlers = new Array();
547 var filehandlers = this.handlers.filehandlers;
549 var dotpos = file.name.lastIndexOf('.');
551 extension = file.name.substr(dotpos+1, file.name.length);
554 for (var i=0; i<filehandlers.length; i++) {
555 if (filehandlers[i].extension == '*' || filehandlers[i].extension == extension) {
556 handlers.push(filehandlers[i]);
560 if (handlers.length == 0) {
561 // No handlers at all (not even 'resource'?)
565 if (handlers.length == 1) {
566 this.upload_file(file, section, sectionnumber, handlers[0].module);
570 this.file_handler_dialog(handlers, extension, file, section, sectionnumber);
574 * Show a dialog box, allowing the user to choose what to do with the file they are uploading
575 * @param handlers the available handlers to choose between
576 * @param extension the extension of the file being uploaded
577 * @param file the File object being uploaded
578 * @param section the DOM element of the section being uploaded to
579 * @param sectionnumber the number of the selected course section
581 file_handler_dialog: function(handlers, extension, file, section, sectionnumber) {
582 if (this.uploaddialog) {
583 var details = new Object();
584 details.isfile = true;
585 details.handlers = handlers;
586 details.extension = extension;
588 details.section = section;
589 details.sectionnumber = sectionnumber;
590 this.uploadqueue.push(details);
593 this.uploaddialog = true;
595 var timestamp = new Date().getTime();
596 var uploadid = Math.round(Math.random()*100000)+'-'+timestamp;
599 if (extension in this.lastselected) {
600 sel = this.lastselected[extension];
602 sel = handlers[0].module;
604 content += '<p>'+M.util.get_string('actionchoice', 'moodle', file.name)+'</p>';
605 content += '<div id="dndupload_handlers'+uploadid+'">';
606 for (var i=0; i<handlers.length; i++) {
607 var id = 'dndupload_handler'+uploadid+handlers[i].module;
608 var checked = (handlers[i].module == sel) ? 'checked="checked" ' : '';
609 content += '<input type="radio" name="handler" value="'+handlers[i].module+'" id="'+id+'" '+checked+'/>';
610 content += ' <label for="'+id+'">';
611 content += handlers[i].message;
612 content += '</label><br/>';
618 var panel = new Y.Panel({
619 bodyContent: content,
627 value: M.util.get_string('upload', 'moodle'),
628 action: function(e) {
630 // Find out which module was selected
632 var div = Y.one('#dndupload_handlers'+uploadid);
633 div.all('input').each(function(input) {
634 if (input.get('checked')) {
635 module = input.get('value');
642 // Remember this selection for next time
643 self.lastselected[extension] = module;
645 self.upload_file(file, section, sectionnumber, module);
647 section: Y.WidgetStdMod.FOOTER
649 value: M.util.get_string('cancel', 'moodle'),
650 action: function(e) {
654 section: Y.WidgetStdMod.FOOTER
657 // When the panel is hidden - destroy it and then check for other pending uploads
658 panel.after("visibleChange", function(e) {
659 if (!panel.get('visible')) {
661 self.check_upload_queue();
667 * Check to see if there are any other dialog boxes to show, now that the current one has
670 check_upload_queue: function() {
671 this.uploaddialog = false;
672 if (this.uploadqueue.length == 0) {
676 var details = this.uploadqueue.shift();
677 if (details.isfile) {
678 this.file_handler_dialog(details.handlers, details.extension, details.file, details.section, details.sectionnumber);
680 this.handle_item(details.type, details.contents, details.section, details.sectionnumber);
685 * Do the file upload: show the dummy element, use an AJAX call to send the data
686 * to the server, update the progress bar for the file, then replace the dummy
687 * element with the real information once the AJAX call completes
688 * @param file the details of the file, taken from the FileList in the drop event
689 * @param section the DOM element representing the selected course section
690 * @param sectionnumber the number of the selected course section
692 upload_file: function(file, section, sectionnumber, module) {
694 // This would be an ideal place to use the Y.io function
695 // however, this does not support data encoded using the
696 // FormData object, which is needed to transfer data from
697 // the DataTransfer object into an XMLHTTPRequest
698 // This can be converted when the YUI issue has been integrated:
699 // http://yuilibrary.com/projects/yui3/ticket/2531274
700 var xhr = new XMLHttpRequest();
703 if (file.size > this.maxbytes) {
704 alert("'"+file.name+"' "+M.util.get_string('filetoolarge', 'moodle'));
708 // Add the file to the display
709 var resel = this.add_resource_element(file.name, section);
711 // Update the progress bar as the file is uploaded
712 xhr.upload.addEventListener('progress', function(e) {
713 if (e.lengthComputable) {
714 var percentage = Math.round((e.loaded * 100) / e.total);
715 resel.progress.style.width = percentage + '%';
719 // Wait for the AJAX call to complete, then update the
720 // dummy element with the returned details
721 xhr.onreadystatechange = function() {
722 if (xhr.readyState == 4) {
723 if (xhr.status == 200) {
724 var result = JSON.parse(xhr.responseText);
726 if (result.error == 0) {
727 // All OK - update the dummy element
728 resel.icon.src = result.icon;
729 resel.a.href = result.link;
730 resel.namespan.innerHTML = result.name;
732 if (result.groupingname) {
733 resel.groupingspan.innerHTML = '(' + result.groupingname + ')';
735 resel.div.removeChild(resel.groupingspan);
738 resel.div.removeChild(resel.progressouter);
739 resel.li.id = result.elementid;
740 resel.div.innerHTML += result.commands;
741 if (result.onclick) {
742 resel.a.onclick = result.onclick;
744 if (self.Y.UA.gecko > 0) {
745 // Fix a Firefox bug which makes sites with a '~' in their wwwroot
746 // log the user out when clicking on the link (before refreshing the page).
747 resel.div.innerHTML = unescape(resel.div.innerHTML);
749 self.add_editing(result.elementid);
751 // Error - remove the dummy element
752 resel.parent.removeChild(resel.li);
757 alert(M.util.get_string('servererror', 'moodle'));
762 // Prepare the data to send
763 var formData = new FormData();
764 formData.append('repo_upload_file', file);
765 formData.append('sesskey', M.cfg.sesskey);
766 formData.append('course', this.courseid);
767 formData.append('section', sectionnumber);
768 formData.append('module', module);
769 formData.append('type', 'Files');
771 // Send the AJAX call
772 xhr.open("POST", this.url, true);
777 * Show a dialog box to gather the name of the resource / activity to be created
778 * from the uploaded content
779 * @param type the details of the type of content
780 * @param contents the contents to be uploaded
781 * @section the DOM element for the section being uploaded to
782 * @sectionnumber the number of the section being uploaded to
784 handle_item: function(type, contents, section, sectionnumber) {
785 if (type.handlers.length == 0) {
786 // Nothing to handle this - should not have got here
790 if (this.uploaddialog) {
791 var details = new Object();
792 details.isfile = false;
794 details.contents = contents;
795 details.section = section;
796 details.setcionnumber = sectionnumber;
797 this.uploadqueue.push(details);
800 this.uploaddialog = true;
802 var timestamp = new Date().getTime();
803 var uploadid = Math.round(Math.random()*100000)+'-'+timestamp;
804 var nameid = 'dndupload_handler_name'+uploadid;
806 content += '<label for="'+nameid+'">'+type.namemessage+'</label>';
807 content += ' <input type="text" id="'+nameid+'" value="" />';
808 if (type.handlers.length > 1) {
809 content += '<div id="dndupload_handlers'+uploadid+'">';
810 var sel = type.handlers[0].module;
811 for (var i=0; i<type.handlers.length; i++) {
812 var id = 'dndupload_handler'+uploadid;
813 var checked = (type.handlers[i].module == sel) ? 'checked="checked" ' : '';
814 content += '<input type="radio" name="handler" value="'+type.handlers[i].module+'" id="'+id+'" '+checked+'/>';
815 content += ' <label for="'+id+'">';
816 content += type.handlers[i].message;
817 content += '</label><br/>';
824 var panel = new Y.Panel({
825 bodyContent: content,
833 value: M.util.get_string('upload', 'moodle'),
834 action: function(e) {
836 var name = Y.one('#dndupload_handler_name'+uploadid).get('value');
837 name = name.replace(/^\s\s*/, '').replace(/\s\s*$/, ''); // Trim
842 if (type.handlers.length > 1) {
843 // Find out which module was selected
844 var div = Y.one('#dndupload_handlers'+uploadid);
845 div.all('input').each(function(input) {
846 if (input.get('checked')) {
847 module = input.get('value');
854 module = type.handlers[0].module;
858 self.upload_item(name, type.type, contents, section, sectionnumber, module);
860 section: Y.WidgetStdMod.FOOTER
862 value: M.util.get_string('cancel', 'moodle'),
863 action: function(e) {
867 section: Y.WidgetStdMod.FOOTER
870 // When the panel is hidden - destroy it and then check for other pending uploads
871 panel.after("visibleChange", function(e) {
872 if (!panel.get('visible')) {
874 self.check_upload_queue();
877 // Focus on the 'name' box
878 Y.one('#'+nameid).focus();
882 * Upload any data types that are not files: display a dummy resource element, send
883 * the data to the server, update the progress bar for the file, then replace the
884 * dummy element with the real information once the AJAX call completes
885 * @param name the display name for the resource / activity to create
886 * @param type the details of the data type found in the drop event
887 * @param contents the actual data that was dropped
888 * @param section the DOM element representing the selected course section
889 * @param sectionnumber the number of the selected course section
890 * @param module the module chosen to handle this upload
892 upload_item: function(name, type, contents, section, sectionnumber, module) {
894 // This would be an ideal place to use the Y.io function
895 // however, this does not support data encoded using the
896 // FormData object, which is needed to transfer data from
897 // the DataTransfer object into an XMLHTTPRequest
898 // This can be converted when the YUI issue has been integrated:
899 // http://yuilibrary.com/projects/yui3/ticket/2531274
900 var xhr = new XMLHttpRequest();
903 // Add the item to the display
904 var resel = this.add_resource_element(name, section);
906 // Wait for the AJAX call to complete, then update the
907 // dummy element with the returned details
908 xhr.onreadystatechange = function() {
909 if (xhr.readyState == 4) {
910 if (xhr.status == 200) {
911 var result = JSON.parse(xhr.responseText);
913 if (result.error == 0) {
914 // All OK - update the dummy element
915 resel.icon.src = result.icon;
916 resel.a.href = result.link;
917 resel.namespan.innerHTML = result.name;
919 if (result.groupingname) {
920 resel.groupingspan.innerHTML = '(' + result.groupingname + ')';
922 resel.div.removeChild(resel.groupingspan);
925 resel.div.removeChild(resel.progressouter);
926 resel.li.id = result.elementid;
927 resel.div.innerHTML += result.commands;
928 if (result.onclick) {
929 resel.a.onclick = result.onclick;
931 if (self.Y.UA.gecko > 0) {
932 // Fix a Firefox bug which makes sites with a '~' in their wwwroot
933 // log the user out when clicking on the link (before refreshing the page).
934 resel.div.innerHTML = unescape(resel.div.innerHTML);
936 self.add_editing(result.elementid, sectionnumber);
938 // Error - remove the dummy element
939 resel.parent.removeChild(resel.li);
944 alert(M.util.get_string('servererror', 'moodle'));
949 // Prepare the data to send
950 var formData = new FormData();
951 formData.append('contents', contents);
952 formData.append('displayname', name);
953 formData.append('sesskey', M.cfg.sesskey);
954 formData.append('course', this.courseid);
955 formData.append('section', sectionnumber);
956 formData.append('type', type);
957 formData.append('module', module);
960 xhr.open("POST", this.url, true);
965 * Call the AJAX course editing initialisation to add the editing tools
966 * to the newly-created resource link
967 * @param elementid the id of the DOM element containing the new resource link
968 * @param sectionnumber the number of the selected course section
970 add_editing: function(elementid) {
971 YUI().use('moodle-course-coursebase', function(Y) {
972 M.course.coursebase.invoke_function('setup_for_resource', '#' + elementid);