Current Path : C:/Users/Mahmood/Desktop/moodle8/course/ |
Current File : C:/Users/Mahmood/Desktop/moodle8/course/dndupload.js |
// This file is part of Moodle - http://moodle.org/ // // 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 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // 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 <http://www.gnu.org/licenses/>. /** * Javascript library for enableing a drag and drop upload to courses * * @package core * @subpackage course * @copyright 2012 Davo Smith * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ M.course_dndupload = { // YUI object. Y: null, // URL for upload requests url: M.cfg.wwwroot + '/course/dndupload.php', // maximum size of files allowed in this form maxbytes: 0, // ID of the course we are on courseid: null, // Data about the different file/data handlers that are available handlers: null, // Nasty hack to distinguish between dragenter(first entry), // dragenter+dragleave(moving between child elements) and dragleave (leaving element) entercount: 0, // Used to keep track of the section we are dragging across - to make // spotting movement between sections more reliable currentsection: null, // Used to store the pending uploads whilst the user is being asked for further input uploadqueue: null, // True if the there is currently a dialog being shown (asking for a name, or giving a // choice of file handlers) uploaddialog: false, // An array containing the last selected file handler for each file type lastselected: null, // The following are used to identify specific parts of the course page // The type of HTML element that is a course section sectiontypename: 'li', // The classes that an element must have to be identified as a course section sectionclasses: ['section', 'main'], // The ID of the main content area of the page (for adding the 'status' div) pagecontentid: 'page', // The selector identifying the list of modules within a section (note changing this may require // changes to the get_mods_element function) modslistselector: 'ul.section', // Original onbeforeunload event. originalUnloadEvent: null, /** * Initalise the drag and drop upload interface * Note: one and only one of options.filemanager and options.formcallback must be defined * * @param Y the YUI object * @param object options { * courseid: ID of the course we are on * maxbytes: maximum size of files allowed in this form * handlers: Data about the different file/data handlers that are available * } */ init: function(Y, options) { this.Y = Y; if (!this.browser_supported()) { return; // Browser does not support the required functionality } this.maxbytes = options.maxbytes; this.courseid = options.courseid; this.handlers = options.handlers; this.uploadqueue = new Array(); this.lastselected = new Array(); var sectionselector = this.sectiontypename + '.' + this.sectionclasses.join('.'); var sections = this.Y.all(sectionselector); if (sections.isEmpty()) { return; // No sections - incompatible course format or front page. } sections.each( function(el) { this.add_preview_element(el); this.init_events(el); }, this); if (options.showstatus) { this.add_status_div(); } }, /** * Add a div element to tell the user that drag and drop upload * is available (or to explain why it is not available) */ add_status_div: function() { var Y = this.Y, coursecontents = Y.one('#' + this.pagecontentid), div, handlefile = (this.handlers.filehandlers.length > 0), handletext = false, handlelink = false, i = 0, styletop, styletopunit; if (!coursecontents) { return; } div = Y.Node.create('<div id="dndupload-status"></div>').setStyle('opacity', '0.0'); coursecontents.insert(div, 0); for (i = 0; i < this.handlers.types.length; i++) { switch (this.handlers.types[i].identifier) { case 'text': case 'text/html': handletext = true; break; case 'url': handlelink = true; break; } } $msgident = 'dndworking'; if (handlefile) { $msgident += 'file'; } if (handletext) { $msgident += 'text'; } if (handlelink) { $msgident += 'link'; } div.setContent(M.util.get_string($msgident, 'moodle')); styletop = div.getStyle('top') || '0px'; styletopunit = styletop.replace(/^\d+/, ''); styletop = parseInt(styletop.replace(/\D*$/, ''), 10); var fadein = new Y.Anim({ node: '#dndupload-status', from: { opacity: 0.0, top: (styletop - 30).toString() + styletopunit }, to: { opacity: 1.0, top: styletop.toString() + styletopunit }, duration: 0.5 }); var fadeout = new Y.Anim({ node: '#dndupload-status', from: { opacity: 1.0, top: styletop.toString() + styletopunit }, to: { opacity: 0.0, top: (styletop - 30).toString() + styletopunit }, duration: 0.5 }); fadein.run(); fadein.on('end', function(e) { Y.later(3000, this, function() { fadeout.run(); }); }); fadeout.on('end', function(e) { Y.one('#dndupload-status').remove(true); }); }, /** * Check the browser has the required functionality * @return true if browser supports drag/drop upload */ browser_supported: function() { if (typeof FileReader == 'undefined') { return false; } if (typeof FormData == 'undefined') { return false; } return true; }, /** * Initialise drag events on node container, all events need * to be processed for drag and drop to work * @param el the element to add events to */ init_events: function(el) { this.Y.on('dragenter', this.drag_enter, el, this); this.Y.on('dragleave', this.drag_leave, el, this); this.Y.on('dragover', this.drag_over, el, this); this.Y.on('drop', this.drop, el, this); }, /** * Work out which course section a given element is in * @param el the child DOM element within the section * @return the DOM element representing the section */ get_section: function(el) { var sectionclasses = this.sectionclasses; return el.ancestor( function(test) { var i; for (i=0; i<sectionclasses.length; i++) { if (!test.hasClass(sectionclasses[i])) { return false; } return true; } }, true); }, /** * Work out the number of the section we have been dropped on to, from the section element * @param DOMElement section the selected section * @return int the section number */ get_section_number: function(section) { var sectionid = section.get('id').split('-'); if (sectionid.length < 2 || sectionid[0] != 'section') { return false; } return parseInt(sectionid[1]); }, /** * Check if the event includes data of the given type * @param e the event details * @param type the data type to check for * @return true if the data type is found in the event data */ types_includes: function(e, type) { var i; var types = e._event.dataTransfer.types; type = type.toLowerCase(); for (i=0; i<types.length; i++) { if (!types.hasOwnProperty(i)) { continue; } if (types[i].toLowerCase() === type) { return true; } } return false; }, /** * Look through the event data, checking it against the registered data types * (in order of priority) and return details of the first matching data type * @param e the event details * @return object|false - false if not found or an object { * realtype: the type as given by the browser * addmessage: the message to show to the user during dragging * namemessage: the message for requesting a name for the resource from the user * type: the identifier of the type (may match several 'realtype's) * } */ drag_type: function(e) { // Check there is some data attached. if (e._event.dataTransfer === null) { return false; } if (e._event.dataTransfer.types === null) { return false; } if (e._event.dataTransfer.types.length == 0) { return false; } // Check for files first. if (this.types_includes(e, 'Files')) { if (e.type != 'drop' || e._event.dataTransfer.files.length != 0) { if (this.handlers.filehandlers.length == 0) { return false; // No available file handlers - ignore this drag. } return { realtype: 'Files', addmessage: M.util.get_string('addfilehere', 'moodle'), namemessage: null, // Should not be asked for anyway type: 'Files' }; } } // Check each of the registered types. var types = this.handlers.types; for (var i=0; i<types.length; i++) { // Check each of the different identifiers for this type var dttypes = types[i].datatransfertypes; for (var j=0; j<dttypes.length; j++) { if (this.types_includes(e, dttypes[j])) { return { realtype: dttypes[j], addmessage: types[i].addmessage, namemessage: types[i].namemessage, handlermessage: types[i].handlermessage, type: types[i].identifier, handlers: types[i].handlers }; } } } return false; // No types we can handle }, /** * Check the content of the drag/drop includes a type we can handle, then, if * it is, notify the browser that we want to handle it * @param event e * @return string type of the event or false */ check_drag: function(e) { var type = this.drag_type(e); if (type) { // Notify browser that we will handle this drag/drop e.stopPropagation(); e.preventDefault(); } return type; }, /** * Handle a dragenter event: add a suitable 'add here' message * when a drag event occurs, containing a registered data type * @param e event data * @return false to prevent the event from continuing to be processed */ drag_enter: function(e) { if (!(type = this.check_drag(e))) { return false; } var section = this.get_section(e.currentTarget); if (!section) { return false; } if (this.currentsection && this.currentsection != section) { this.currentsection = section; this.entercount = 1; } else { this.entercount++; if (this.entercount > 2) { this.entercount = 2; return false; } } this.show_preview_element(section, type); return false; }, /** * Handle a dragleave event: remove the 'add here' message (if present) * @param e event data * @return false to prevent the event from continuing to be processed */ drag_leave: function(e) { if (!this.check_drag(e)) { return false; } this.entercount--; if (this.entercount == 1) { return false; } this.entercount = 0; this.currentsection = null; this.hide_preview_element(); return false; }, /** * Handle a dragover event: just prevent the browser default (necessary * to allow drag and drop handling to work) * @param e event data * @return false to prevent the event from continuing to be processed */ drag_over: function(e) { this.check_drag(e); return false; }, /** * Handle a drop event: hide the 'add here' message, check the attached * data type and start the upload process * @param e event data * @return false to prevent the event from continuing to be processed */ drop: function(e) { this.hide_preview_element(); if (!(type = this.check_drag(e))) { return false; } // Work out the number of the section we are on (from its id) var section = this.get_section(e.currentTarget); var sectionnumber = this.get_section_number(section); // Process the file or the included data if (type.type == 'Files') { var files = e._event.dataTransfer.files; for (var i=0, f; f=files[i]; i++) { this.handle_file(f, section, sectionnumber); } } else { var contents = e._event.dataTransfer.getData(type.realtype); if (contents) { this.handle_item(type, contents, section, sectionnumber); } } return false; }, /** * Find or create the 'ul' element that contains all of the module * instances in this section * @param section the DOM element representing the section * @return false to prevent the event from continuing to be processed */ get_mods_element: function(section) { // Find the 'ul' containing the list of mods var modsel = section.one(this.modslistselector); if (!modsel) { // Create the above 'ul' if it doesn't exist modsel = document.createElement('ul'); modsel.className = 'section img-text'; var contentel = section.get('children').pop(); var brel = contentel.get('children').pop(); contentel.insertBefore(modsel, brel); modsel = this.Y.one(modsel); } return modsel; }, /** * Add a new dummy item to the list of mods, to be replaced by a real * item & link once the AJAX upload call has completed * @param name the label to show in the element * @param section the DOM element reperesenting the course section * @return DOM element containing the new item */ add_resource_element: function(name, section, module) { var modsel = this.get_mods_element(section); var resel = { parent: modsel, li: document.createElement('li'), div: document.createElement('div'), indentdiv: document.createElement('div'), a: document.createElement('a'), icon: document.createElement('img'), namespan: document.createElement('span'), groupingspan: document.createElement('span'), progressouter: document.createElement('span'), progress: document.createElement('span') }; resel.li.className = 'activity ' + module + ' modtype_' + module; resel.indentdiv.className = 'mod-indent'; resel.li.appendChild(resel.indentdiv); resel.div.className = 'activityinstance'; resel.indentdiv.appendChild(resel.div); resel.a.href = '#'; resel.div.appendChild(resel.a); resel.icon.src = M.util.image_url('i/ajaxloader'); resel.icon.className = 'activityicon iconlarge'; resel.a.appendChild(resel.icon); resel.namespan.className = 'instancename'; resel.namespan.innerHTML = name; resel.a.appendChild(resel.namespan); resel.groupingspan.className = 'groupinglabel'; resel.div.appendChild(resel.groupingspan); resel.progressouter.className = 'dndupload-progress-outer'; resel.progress.className = 'dndupload-progress-inner'; resel.progress.innerHTML = ' '; resel.progressouter.appendChild(resel.progress); resel.div.appendChild(resel.progressouter); modsel.insertBefore(resel.li, modsel.get('children').pop()); // Leave the 'preview element' at the bottom return resel; }, /** * Hide any visible dndupload-preview elements on the page */ hide_preview_element: function() { this.Y.all('li.dndupload-preview').addClass('dndupload-hidden'); this.Y.all('.dndupload-over').removeClass('dndupload-over'); }, /** * Unhide the preview element for the given section and set it to display * the correct message * @param section the YUI node representing the selected course section * @param type the details of the data type detected in the drag (including the message to display) */ show_preview_element: function(section, type) { this.hide_preview_element(); var preview = section.one('li.dndupload-preview').removeClass('dndupload-hidden'); section.addClass('dndupload-over'); // Horrible work-around to allow the 'Add X here' text to be a drop target in Firefox. var node = preview.one('span').getDOMNode(); node.firstChild.nodeValue = type.addmessage; }, /** * Add the preview element to a course section. Note: this needs to be done before 'addEventListener' * is called, otherwise Firefox will ignore events generated when the mouse is over the preview * element (instead of passing them up to the parent element) * @param section the YUI node representing the selected course section */ add_preview_element: function(section) { var modsel = this.get_mods_element(section); var preview = { li: document.createElement('li'), div: document.createElement('div'), icon: document.createElement('img'), namespan: document.createElement('span') }; preview.li.className = 'dndupload-preview dndupload-hidden'; preview.div.className = 'mod-indent'; preview.li.appendChild(preview.div); preview.icon.src = M.util.image_url('t/addfile'); preview.icon.className = 'icon'; preview.div.appendChild(preview.icon); preview.div.appendChild(document.createTextNode(' ')); preview.namespan.className = 'instancename'; preview.namespan.innerHTML = M.util.get_string('addfilehere', 'moodle'); preview.div.appendChild(preview.namespan); modsel.appendChild(preview.li); }, /** * Find the registered handler for the given file type. If there is more than one, ask the * user which one to use. Then upload the file to the server * @param file the details of the file, taken from the FileList in the drop event * @param section the DOM element representing the selected course section * @param sectionnumber the number of the selected course section */ handle_file: function(file, section, sectionnumber) { var handlers = new Array(); var filehandlers = this.handlers.filehandlers; var extension = ''; var dotpos = file.name.lastIndexOf('.'); if (dotpos != -1) { extension = file.name.substr(dotpos+1, file.name.length).toLowerCase(); } for (var i=0; i<filehandlers.length; i++) { if (filehandlers[i].extension == '*' || filehandlers[i].extension == extension) { handlers.push(filehandlers[i]); } } if (handlers.length == 0) { // No handlers at all (not even 'resource'?) return; } if (handlers.length == 1) { this.upload_file(file, section, sectionnumber, handlers[0].module); return; } this.file_handler_dialog(handlers, extension, file, section, sectionnumber); }, /** * Show a dialog box, allowing the user to choose what to do with the file they are uploading * @param handlers the available handlers to choose between * @param extension the extension of the file being uploaded * @param file the File object being uploaded * @param section the DOM element of the section being uploaded to * @param sectionnumber the number of the selected course section */ file_handler_dialog: function(handlers, extension, file, section, sectionnumber) { if (this.uploaddialog) { var details = new Object(); details.isfile = true; details.handlers = handlers; details.extension = extension; details.file = file; details.section = section; details.sectionnumber = sectionnumber; this.uploadqueue.push(details); return; } this.uploaddialog = true; var timestamp = new Date().getTime(); var uploadid = Math.round(Math.random()*100000)+'-'+timestamp; var content = ''; var sel; if (extension in this.lastselected) { sel = this.lastselected[extension]; } else { sel = handlers[0].module; } content += '<p>'+M.util.get_string('actionchoice', 'moodle', file.name)+'</p>'; content += '<div id="dndupload_handlers'+uploadid+'">'; for (var i=0; i<handlers.length; i++) { var id = 'dndupload_handler'+uploadid+handlers[i].module; var checked = (handlers[i].module == sel) ? 'checked="checked" ' : ''; content += '<input type="radio" name="handler" value="'+handlers[i].module+'" id="'+id+'" '+checked+'/>'; content += ' <label for="'+id+'">'; content += handlers[i].message; content += '</label><br/>'; } content += '</div>'; var Y = this.Y; var self = this; var panel = new M.core.dialogue({ bodyContent: content, width: '350px', modal: true, visible: false, render: true, align: { node: null, points: [Y.WidgetPositionAlign.CC, Y.WidgetPositionAlign.CC] } }); panel.show(); // When the panel is hidden - destroy it and then check for other pending uploads panel.after("visibleChange", function(e) { if (!panel.get('visible')) { panel.destroy(true); self.check_upload_queue(); } }); // Add the submit/cancel buttons to the bottom of the dialog. panel.addButton({ label: M.util.get_string('upload', 'moodle'), action: function(e) { e.preventDefault(); // Find out which module was selected var module = false; var div = Y.one('#dndupload_handlers'+uploadid); div.all('input').each(function(input) { if (input.get('checked')) { module = input.get('value'); } }); if (!module) { return; } panel.hide(); // Remember this selection for next time self.lastselected[extension] = module; // Do the upload self.upload_file(file, section, sectionnumber, module); }, section: Y.WidgetStdMod.FOOTER }); panel.addButton({ label: M.util.get_string('cancel', 'moodle'), action: function(e) { e.preventDefault(); panel.hide(); }, section: Y.WidgetStdMod.FOOTER }); }, /** * Check to see if there are any other dialog boxes to show, now that the current one has * been dealt with */ check_upload_queue: function() { this.uploaddialog = false; if (this.uploadqueue.length == 0) { return; } var details = this.uploadqueue.shift(); if (details.isfile) { this.file_handler_dialog(details.handlers, details.extension, details.file, details.section, details.sectionnumber); } else { this.handle_item(details.type, details.contents, details.section, details.sectionnumber); } }, /** * Do the file upload: show the dummy element, use an AJAX call to send the data * to the server, update the progress bar for the file, then replace the dummy * element with the real information once the AJAX call completes * @param file the details of the file, taken from the FileList in the drop event * @param section the DOM element representing the selected course section * @param sectionnumber the number of the selected course section */ upload_file: function(file, section, sectionnumber, module) { // This would be an ideal place to use the Y.io function // however, this does not support data encoded using the // FormData object, which is needed to transfer data from // the DataTransfer object into an XMLHTTPRequest // This can be converted when the YUI issue has been integrated: // http://yuilibrary.com/projects/yui3/ticket/2531274 var xhr = new XMLHttpRequest(); var self = this; if (this.maxbytes > 0 && file.size > this.maxbytes) { new M.core.alert({message: M.util.get_string('namedfiletoolarge', 'moodle', {filename: file.name})}); return; } // Add the file to the display var resel = this.add_resource_element(file.name, section, module); // Update the progress bar as the file is uploaded xhr.upload.addEventListener('progress', function(e) { if (e.lengthComputable) { var percentage = Math.round((e.loaded * 100) / e.total); resel.progress.style.width = percentage + '%'; } }, false); // Wait for the AJAX call to complete, then update the // dummy element with the returned details xhr.onreadystatechange = function() { if (xhr.readyState == 1) { this.originalUnloadEvent = window.onbeforeunload; self.reportUploadDirtyState(true); } if (xhr.readyState == 4) { if (xhr.status == 200) { var result = JSON.parse(xhr.responseText); if (result) { if (result.error == 0) { // All OK - replace the dummy element. resel.li.outerHTML = result.fullcontent; if (self.Y.UA.gecko > 0) { // Fix a Firefox bug which makes sites with a '~' in their wwwroot // log the user out when clicking on the link (before refreshing the page). resel.li.outerHTML = unescape(resel.li.outerHTML); } self.add_editing(result.elementid); // Fire the content updated event. require(['core/event', 'jquery'], function(event, $) { event.notifyFilterContentUpdated($(result.fullcontent)); }); } else { // Error - remove the dummy element resel.parent.removeChild(resel.li); new M.core.alert({message: result.error}); } } } else { new M.core.alert({message: M.util.get_string('servererror', 'moodle')}); } self.reportUploadDirtyState(false); } }; // Prepare the data to send var formData = new FormData(); try { formData.append('repo_upload_file', file); } catch (e) { // Edge throws an error at this point if we try to upload a folder. resel.parent.removeChild(resel.li); new M.core.alert({message: M.util.get_string('filereaderror', 'moodle', file.name)}); return; } formData.append('sesskey', M.cfg.sesskey); formData.append('course', this.courseid); formData.append('section', sectionnumber); formData.append('module', module); formData.append('type', 'Files'); // Try reading the file to check it is not a folder, before sending it to the server. var reader = new FileReader(); reader.onload = function() { // File was read OK - send it to the server. xhr.open("POST", self.url, true); xhr.send(formData); }; reader.onerror = function() { // Unable to read the file (it is probably a folder) - display an error message. resel.parent.removeChild(resel.li); new M.core.alert({message: M.util.get_string('filereaderror', 'moodle', file.name)}); }; if (file.size > 0) { // If this is a non-empty file, try reading the first few bytes. // This will trigger reader.onerror() for folders and reader.onload() for ordinary, readable files. reader.readAsText(file.slice(0, 5)); } else { // If you call slice() on a 0-byte folder, before calling readAsText, then Firefox triggers reader.onload(), // instead of reader.onerror(). // So, for 0-byte files, just call readAsText on the whole file (and it will trigger load/error functions as expected). reader.readAsText(file); } }, /** * Show a dialog box to gather the name of the resource / activity to be created * from the uploaded content * @param type the details of the type of content * @param contents the contents to be uploaded * @section the DOM element for the section being uploaded to * @sectionnumber the number of the section being uploaded to */ handle_item: function(type, contents, section, sectionnumber) { if (type.handlers.length == 0) { // Nothing to handle this - should not have got here return; } if (type.handlers.length == 1 && type.handlers[0].noname) { // Only one handler and it doesn't need a name (i.e. a label). this.upload_item('', type.type, contents, section, sectionnumber, type.handlers[0].module); this.check_upload_queue(); return; } if (this.uploaddialog) { var details = new Object(); details.isfile = false; details.type = type; details.contents = contents; details.section = section; details.setcionnumber = sectionnumber; this.uploadqueue.push(details); return; } this.uploaddialog = true; var timestamp = new Date().getTime(); var uploadid = Math.round(Math.random()*100000)+'-'+timestamp; var nameid = 'dndupload_handler_name'+uploadid; var content = ''; if (type.handlers.length > 1) { content += '<p>'+type.handlermessage+'</p>'; content += '<div id="dndupload_handlers'+uploadid+'">'; var sel = type.handlers[0].module; for (var i=0; i<type.handlers.length; i++) { var id = 'dndupload_handler'+uploadid+type.handlers[i].module; var checked = (type.handlers[i].module == sel) ? 'checked="checked" ' : ''; content += '<input type="radio" name="handler" value="'+i+'" id="'+id+'" '+checked+'/>'; content += ' <label for="'+id+'">'; content += type.handlers[i].message; content += '</label><br/>'; } content += '</div>'; } var disabled = (type.handlers[0].noname) ? ' disabled = "disabled" ' : ''; content += '<label for="'+nameid+'">'+type.namemessage+'</label>'; content += ' <input type="text" id="'+nameid+'" value="" '+disabled+' />'; var Y = this.Y; var self = this; var panel = new M.core.dialogue({ bodyContent: content, width: '350px', modal: true, visible: true, render: true, align: { node: null, points: [Y.WidgetPositionAlign.CC, Y.WidgetPositionAlign.CC] } }); // When the panel is hidden - destroy it and then check for other pending uploads panel.after("visibleChange", function(e) { if (!panel.get('visible')) { panel.destroy(true); self.check_upload_queue(); } }); var namefield = Y.one('#'+nameid); var submit = function(e) { e.preventDefault(); var name = Y.Lang.trim(namefield.get('value')); var module = false; var noname = false; if (type.handlers.length > 1) { // Find out which module was selected var div = Y.one('#dndupload_handlers'+uploadid); div.all('input').each(function(input) { if (input.get('checked')) { var idx = input.get('value'); module = type.handlers[idx].module; noname = type.handlers[idx].noname; } }); if (!module) { return; } } else { module = type.handlers[0].module; noname = type.handlers[0].noname; } if (name == '' && !noname) { return; } if (noname) { name = ''; } panel.hide(); // Do the upload self.upload_item(name, type.type, contents, section, sectionnumber, module); }; // Add the submit/cancel buttons to the bottom of the dialog. panel.addButton({ label: M.util.get_string('upload', 'moodle'), action: submit, section: Y.WidgetStdMod.FOOTER, name: 'submit' }); panel.addButton({ label: M.util.get_string('cancel', 'moodle'), action: function(e) { e.preventDefault(); panel.hide(); }, section: Y.WidgetStdMod.FOOTER }); var submitbutton = panel.getButton('submit').button; namefield.on('key', submit, 'enter'); // Submit the form if 'enter' pressed namefield.after('keyup', function() { if (Y.Lang.trim(namefield.get('value')) == '') { submitbutton.disable(); } else { submitbutton.enable(); } }); // Enable / disable the 'name' box, depending on the handler selected. for (i=0; i<type.handlers.length; i++) { if (type.handlers[i].noname) { Y.one('#dndupload_handler'+uploadid+type.handlers[i].module).on('click', function (e) { namefield.set('disabled', 'disabled'); submitbutton.enable(); }); } else { Y.one('#dndupload_handler'+uploadid+type.handlers[i].module).on('click', function (e) { namefield.removeAttribute('disabled'); namefield.focus(); if (Y.Lang.trim(namefield.get('value')) == '') { submitbutton.disable(); } }); } } // Focus on the 'name' box Y.one('#'+nameid).focus(); }, /** * Upload any data types that are not files: display a dummy resource element, send * the data to the server, update the progress bar for the file, then replace the * dummy element with the real information once the AJAX call completes * @param name the display name for the resource / activity to create * @param type the details of the data type found in the drop event * @param contents the actual data that was dropped * @param section the DOM element representing the selected course section * @param sectionnumber the number of the selected course section * @param module the module chosen to handle this upload */ upload_item: function(name, type, contents, section, sectionnumber, module) { // This would be an ideal place to use the Y.io function // however, this does not support data encoded using the // FormData object, which is needed to transfer data from // the DataTransfer object into an XMLHTTPRequest // This can be converted when the YUI issue has been integrated: // http://yuilibrary.com/projects/yui3/ticket/2531274 var xhr = new XMLHttpRequest(); var self = this; // Add the item to the display var resel = this.add_resource_element(name, section, module); // Wait for the AJAX call to complete, then update the // dummy element with the returned details xhr.onreadystatechange = function() { if (xhr.readyState == 1) { this.originalUnloadEvent = window.onbeforeunload; self.reportUploadDirtyState(true); } if (xhr.readyState == 4) { if (xhr.status == 200) { var result = JSON.parse(xhr.responseText); if (result) { if (result.error == 0) { // All OK - replace the dummy element. resel.li.outerHTML = result.fullcontent; if (self.Y.UA.gecko > 0) { // Fix a Firefox bug which makes sites with a '~' in their wwwroot // log the user out when clicking on the link (before refreshing the page). resel.li.outerHTML = unescape(resel.li.outerHTML); } self.add_editing(result.elementid); } else { // Error - remove the dummy element resel.parent.removeChild(resel.li); new M.core.alert({message: result.error}); } } } else { new M.core.alert({message: M.util.get_string('servererror', 'moodle')}); } self.reportUploadDirtyState(false); } }; // Prepare the data to send var formData = new FormData(); formData.append('contents', contents); formData.append('displayname', name); formData.append('sesskey', M.cfg.sesskey); formData.append('course', this.courseid); formData.append('section', sectionnumber); formData.append('type', type); formData.append('module', module); // Send the data xhr.open("POST", this.url, true); xhr.send(formData); }, /** * Call the AJAX course editing initialisation to add the editing tools * to the newly-created resource link * @param elementid the id of the DOM element containing the new resource link * @param sectionnumber the number of the selected course section */ add_editing: function(elementid) { var node = Y.one('#' + elementid); YUI().use('moodle-course-coursebase', function(Y) { Y.log("Invoking setup_for_resource", 'debug', 'coursedndupload'); M.course.coursebase.invoke_function('setup_for_resource', node); }); if (M.core.actionmenu && M.core.actionmenu.newDOMNode) { M.core.actionmenu.newDOMNode(node); } }, /** * Set the event to prevent user navigate away when upload progress still running. * * @param {bool} enable true if upload progress is running, false otherwise */ reportUploadDirtyState: function(enable) { if (!enable) { window.onbeforeunload = this.originalUnloadEvent; } else { window.onbeforeunload = function(e) { var warningMessage = M.util.get_string('changesmadereallygoaway', 'moodle'); if (e) { e.returnValue = warningMessage; } return warningMessage; }; } } };