diff --git a/lib/amd/build/modal.min.js b/lib/amd/build/modal.min.js
index 39a63e403d5..1a7b16798e5 100644
--- a/lib/amd/build/modal.min.js
+++ b/lib/amd/build/modal.min.js
@@ -1,2 +1,2 @@
-function _typeof(a){"@babel/helpers - typeof";if("function"==typeof Symbol&&"symbol"==typeof Symbol.iterator){_typeof=function(a){return typeof a}}else{_typeof=function(a){return a&&"function"==typeof Symbol&&a.constructor===Symbol&&a!==Symbol.prototype?"symbol":typeof a}}return _typeof(a)}define ("core/modal",["jquery","core/templates","core/notification","core/key_codes","core/custom_interaction_events","core/modal_backdrop","core/event","core/modal_events","core/local/aria/focuslock","core/pending","core/aria","core/fullscreen"],function(a,b,c,d,e,f,g,h,i,j,k,l){var m={CONTAINER:"[data-region=\"modal-container\"]",MODAL:"[data-region=\"modal\"]",HEADER:"[data-region=\"header\"]",TITLE:"[data-region=\"title\"]",BODY:"[data-region=\"body\"]",FOOTER:"[data-region=\"footer\"]",HIDE:"[data-action=\"hide\"]",DIALOG:"[role=dialog]",FORM:"form",MENU_BAR:"[role=menubar]",HAS_Z_INDEX:".moodle-has-zindex",CAN_RECEIVE_FOCUS:"input:not([type=\"hidden\"]), a[href], button, textarea, select, [tabindex]"},n={LOADING:"core/loading",BACKDROP:"core/modal_backdrop"},o,p=0,q=function(b){this.root=a(b);this.modal=this.root.find(m.MODAL);this.header=this.modal.find(m.HEADER);this.headerPromise=a.Deferred();this.title=this.header.find(m.TITLE);this.titlePromise=a.Deferred();this.body=this.modal.find(m.BODY);this.bodyPromise=a.Deferred();this.footer=this.modal.find(m.FOOTER);this.footerPromise=a.Deferred();this.hiddenSiblings=[];this.isAttached=!1;this.bodyJS=null;this.footerJS=null;this.modalCount=p++;this.attachmentPoint=document.createElement("div");document.body.append(this.attachmentPoint);if(!this.root.is(m.CONTAINER)){c.exception({message:"Element is not a modal container"})}if(!this.modal.length){c.exception({message:"Container does not contain a modal"})}if(!this.header.length){c.exception({message:"Modal is missing a header region"})}if(!this.title.length){c.exception({message:"Modal header is missing a title region"})}if(!this.body.length){c.exception({message:"Modal is missing a body region"})}if(!this.footer.length){c.exception({message:"Modal is missing a footer region"})}this.registerEventListeners()};q.prototype.attachToDOM=function(){this.getAttachmentPoint().append(this.root);if(this.isAttached){return}i.trapFocus(this.root[0]);if(this.bodyJS){b.runTemplateJS(this.bodyJS);this.bodyJS=null}if(this.footerJS){b.runTemplateJS(this.footerJS);this.footerJS=null}this.isAttached=!0};q.prototype.countOtherVisibleModals=function(){var b=0;a("body").find(m.CONTAINER).each(function(c,d){d=a(d);if(!this.root.is(d)&&d.hasClass("show")){b++}}.bind(this));return b};q.prototype.getBackdrop=function(){if(!o){o=b.render(n.BACKDROP,{}).then(function(b){var c=a(b);return new f(c)}).fail(c.exception)}return o};q.prototype.getRoot=function(){return this.root};q.prototype.getModal=function(){return this.modal};q.prototype.getTitle=function(){return this.title};q.prototype.getBody=function(){return this.body};q.prototype.getFooter=function(){return this.footer};q.prototype.getTitlePromise=function(){return this.titlePromise};q.prototype.getBodyPromise=function(){return this.bodyPromise};q.prototype.getFooterPromise=function(){return this.footerPromise};q.prototype.getModalCount=function(){return this.modalCount};q.prototype.setTitle=function(b){var d=this.getTitle();this.titlePromise=a.Deferred();this.asyncSet(b,d.html.bind(d)).then(function(){this.titlePromise.resolve(d)}.bind(this)).catch(c.exception)};q.prototype.setBody=function(d){this.bodyPromise=a.Deferred();var e=this.getBody();if("string"==typeof d){e.html(d);g.notifyFilterContentUpdated(e);this.getRoot().trigger(h.bodyRendered,this);this.bodyPromise.resolve(e)}else{var f="amd-modal-js-pending-id-"+this.getModalCount();M.util.js_pending(f);var i=null;e.css("overflow","hidden");d=a.when(d);if("pending"==d.state()){var j=e.innerHeight();if(100>j){j=100}e.animate({height:j+"px"},150);e.html("");i=b.render(n.LOADING,{}).then(function(b){var c=a(b).hide();e.html(c);c.fadeIn(150);return a.when(c.promise(),d)}).then(function(a){return a.fadeOut(100).promise()}).then(function(){return d})}else{i=d}i.then(function(a,c){var d=null;if(this.isVisible()){e.css("opacity",0);var f=e.innerHeight();e.html(a);e.css("height","");var g=e.innerHeight();e.css("height",f+"px");d=e.animate({height:g+"px",opacity:1},{duration:150,queue:!1}).promise()}else{e.html(a)}if(c){if(this.isAttached){b.runTemplateJS(c)}else{this.bodyJS=c}}return d}.bind(this)).then(function(a){g.notifyFilterContentUpdated(e);this.getRoot().trigger(h.bodyRendered,this);return a}.bind(this)).then(function(){this.bodyPromise.resolve(e)}.bind(this)).fail(c.exception).always(function(){e.css("height","");e.css("overflow","");e.css("opacity","");M.util.js_complete(f)}).fail(c.exception)}};q.prototype.setBodyContent=function(b){var c=this;return b.then(function(b){var d=b.html,e=b.js;return c.setBody(a.when(d,e))})};q.prototype.setFooter=function(d){this.showFooter();this.footerPromise=a.Deferred();var e=this.getFooter();if("string"==typeof d){e.html(d);this.footerPromise.resolve(e)}else{b.render(n.LOADING,{}).then(function(a){e.html(a);return d}).then(function(a,c){e.html(a);if(c){if(this.isAttached){b.runTemplateJS(c)}else{this.footerJS=c}}return e}.bind(this)).then(function(a){this.footerPromise.resolve(a)}.bind(this)).catch(c.exception)}};q.prototype.hasFooterContent=function(){return this.getFooter().children().length?!0:!1};q.prototype.hideFooter=function(){this.getFooter().addClass("hidden")};q.prototype.showFooter=function(){this.getFooter().removeClass("hidden")};q.prototype.setLarge=function(){if(this.isLarge()){return}this.getModal().addClass("modal-lg")};q.prototype.isLarge=function(){return this.getModal().hasClass("modal-lg")};q.prototype.setSmall=function(){if(this.isSmall()){return}this.getModal().removeClass("modal-lg")};q.prototype.isSmall=function(){return!this.getModal().hasClass("modal-lg")};q.prototype.setScrollable=function(a){if(!a){this.getModal()[0].classList.remove("modal-dialog-scrollable");return}this.getModal()[0].classList.add("modal-dialog-scrollable")};q.prototype.calculateZIndex=function(){var b=a(m.DIALOG+", "+m.MENU_BAR+", "+m.HAS_Z_INDEX),c=parseInt(this.root.css("z-index"));b.each(function(b,d){d=a(d);var e=d.css("z-index")?parseInt(d.css("z-index")):0;if(e>c){c=e}});return c};q.prototype.isVisible=function(){return this.root.hasClass("show")};q.prototype.hasFocus=function(){var b=a(document.activeElement);return this.root.is(b)||this.root.has(b).length};q.prototype.hasTransitions=function(){return this.getRoot().hasClass("fade")};q.prototype.getAttachmentPoint=function(){return a(l.getElement()||this.attachmentPoint)};q.prototype.show=function(){if(this.isVisible()){return a.Deferred().resolve()}var b=new j("core/modal:show");if(this.hasFooterContent()){this.showFooter()}else{this.hideFooter()}this.attachToDOM();return this.getBackdrop().then(function(b){var c=this.calculateZIndex(),d=c+2;this.root.css("z-index",d);b.setZIndex(d-1);b.show();this.root.removeClass("hide").addClass("show");this.accessibilityShow();this.getModal().focus();a("body").addClass("modal-open");this.root.trigger(h.shown,this)}.bind(this)).then(b.resolve)};q.prototype.hideIfNotForm=function(){var a=this.modal.find(m.FORM);if(0==a.length){this.hide()}};q.prototype.hide=function(){this.getBackdrop().done(function(b){i.untrapFocus();if(!this.countOtherVisibleModals()){b.hide();a("body").removeClass("modal-open")}var c=parseInt(this.root.css("z-index"));this.root.css("z-index","");b.setZIndex(c-3);this.accessibilityHide();if(this.hasTransitions()){this.getRoot().one("transitionend webkitTransitionEnd oTransitionEnd",function(){this.getRoot().removeClass("show").addClass("hide")}.bind(this))}else{this.getRoot().removeClass("show").addClass("hide")}if(a(document.body).find(this.getRoot()).length){a(document.body).append(this.getRoot())}this.root.trigger(h.hidden,this)}.bind(this))};q.prototype.destroy=function(){this.hide();this.root.remove();this.root.trigger(h.destroyed,this);this.attachmentPoint.remove()};q.prototype.accessibilityShow=function(){k.unhide(this.root.get());k.hideSiblings(this.root.get()[0])};q.prototype.accessibilityHide=function(){k.unhideSiblings(this.root.get()[0]);k.hide(this.root.get())};q.prototype.registerEventListeners=function(){this.getRoot().on("keydown",function(a){if(!this.isVisible()){return}if(a.keyCode==d.escape){if(this.removeOnClose){this.destroy()}else{this.hide()}}}.bind(this));this.getRoot().click(function(b){if(!a(b.target).closest(m.MODAL).length){if(a(b.target).closest(m.CONTAINER).length){var c=a.Event(h.outsideClick);this.getRoot().trigger(c,this);if(!c.isDefaultPrevented()){this.hideIfNotForm()}}}}.bind(this));e.define(this.getModal(),[e.events.activate]);this.getModal().on(e.events.activate,m.HIDE,function(a,b){this.hide();b.originalEvent.preventDefault()}.bind(this))};q.prototype.registerCloseOnCancel=function(){this.getModal().on(e.events.activate,this.getActionSelector("cancel"),function(b,c){var d=a.Event(h.cancel);this.getRoot().trigger(d,this);if(!d.isDefaultPrevented()){c.originalEvent.preventDefault();if(this.removeOnClose){this.destroy()}else{this.hide()}}}.bind(this))};q.prototype.registerCloseOnSave=function(){this.getModal().on(e.events.activate,this.getActionSelector("save"),function(b,c){var d=a.Event(h.save);this.getRoot().trigger(d,this);if(!d.isDefaultPrevented()){c.originalEvent.preventDefault();if(this.removeOnClose){this.destroy()}else{this.hide()}}}.bind(this))};q.prototype.asyncSet=function(b,d){var e=b;if("object"!==_typeof(b)||!b.hasOwnProperty("then")){e=a.Deferred();e.resolve(b)}e.then(function(a){d(a)}).fail(c.exception);return e};q.prototype.setButtonText=function(a,b){var c=this.getFooter().find(this.getActionSelector(a));if(!c){throw new Error("Unable to find the '"+a+"' button")}return this.asyncSet(b,c.text.bind(c))};q.prototype.getActionSelector=function(a){return"[data-action='"+a+"']"};q.prototype.setRemoveOnClose=function(a){this.removeOnClose=a};return q});
+function _typeof(a){"@babel/helpers - typeof";if("function"==typeof Symbol&&"symbol"==typeof Symbol.iterator){_typeof=function(a){return typeof a}}else{_typeof=function(a){return a&&"function"==typeof Symbol&&a.constructor===Symbol&&a!==Symbol.prototype?"symbol":typeof a}}return _typeof(a)}define ("core/modal",["jquery","core/templates","core/notification","core/key_codes","core/custom_interaction_events","core/modal_backdrop","core/event","core/modal_events","core/local/aria/focuslock","core/pending","core/aria","core/fullscreen"],function(a,b,c,d,e,f,g,h,i,j,k,l){var m={CONTAINER:"[data-region=\"modal-container\"]",MODAL:"[data-region=\"modal\"]",HEADER:"[data-region=\"header\"]",TITLE:"[data-region=\"title\"]",BODY:"[data-region=\"body\"]",FOOTER:"[data-region=\"footer\"]",HIDE:"[data-action=\"hide\"]",DIALOG:"[role=dialog]",FORM:"form",MENU_BAR:"[role=menubar]",HAS_Z_INDEX:".moodle-has-zindex",CAN_RECEIVE_FOCUS:"input:not([type=\"hidden\"]), a[href], button, textarea, select, [tabindex]"},n={LOADING:"core/loading",BACKDROP:"core/modal_backdrop"},o,p=0,q=function(b){this.root=a(b);this.modal=this.root.find(m.MODAL);this.header=this.modal.find(m.HEADER);this.headerPromise=a.Deferred();this.title=this.header.find(m.TITLE);this.titlePromise=a.Deferred();this.body=this.modal.find(m.BODY);this.bodyPromise=a.Deferred();this.footer=this.modal.find(m.FOOTER);this.footerPromise=a.Deferred();this.hiddenSiblings=[];this.isAttached=!1;this.bodyJS=null;this.footerJS=null;this.modalCount=p++;this.attachmentPoint=document.createElement("div");document.body.append(this.attachmentPoint);if(!this.root.is(m.CONTAINER)){c.exception({message:"Element is not a modal container"})}if(!this.modal.length){c.exception({message:"Container does not contain a modal"})}if(!this.header.length){c.exception({message:"Modal is missing a header region"})}if(!this.title.length){c.exception({message:"Modal header is missing a title region"})}if(!this.body.length){c.exception({message:"Modal is missing a body region"})}if(!this.footer.length){c.exception({message:"Modal is missing a footer region"})}this.registerEventListeners()};q.prototype.attachToDOM=function(){this.getAttachmentPoint().append(this.root);if(this.isAttached){return}i.trapFocus(this.root[0]);if(this.bodyJS){b.runTemplateJS(this.bodyJS);this.bodyJS=null}if(this.footerJS){b.runTemplateJS(this.footerJS);this.footerJS=null}this.isAttached=!0};q.prototype.countOtherVisibleModals=function(){var b=0;a("body").find(m.CONTAINER).each(function(c,d){d=a(d);if(!this.root.is(d)&&d.hasClass("show")){b++}}.bind(this));return b};q.prototype.getBackdrop=function(){if(!o){o=b.render(n.BACKDROP,{}).then(function(b){var c=a(b);return new f(c)}).fail(c.exception)}return o};q.prototype.getRoot=function(){return this.root};q.prototype.getModal=function(){return this.modal};q.prototype.getTitle=function(){return this.title};q.prototype.getBody=function(){return this.body};q.prototype.getFooter=function(){return this.footer};q.prototype.getTitlePromise=function(){return this.titlePromise};q.prototype.getBodyPromise=function(){return this.bodyPromise};q.prototype.getFooterPromise=function(){return this.footerPromise};q.prototype.getModalCount=function(){return this.modalCount};q.prototype.setTitle=function(b){var d=this.getTitle();this.titlePromise=a.Deferred();this.asyncSet(b,d.html.bind(d)).then(function(){this.titlePromise.resolve(d)}.bind(this)).catch(c.exception)};q.prototype.setBody=function(d){this.bodyPromise=a.Deferred();var e=this.getBody();if("string"==typeof d){e.html(d);g.notifyFilterContentUpdated(e);this.getRoot().trigger(h.bodyRendered,this);this.bodyPromise.resolve(e)}else{var f="amd-modal-js-pending-id-"+this.getModalCount();M.util.js_pending(f);var i=null;e.css("overflow","hidden");d=a.when(d);if("pending"==d.state()){var j=e.innerHeight();if(100>j){j=100}e.animate({height:j+"px"},150);e.html("");i=b.render(n.LOADING,{}).then(function(b){var c=a(b).hide();e.html(c);c.fadeIn(150);return a.when(c.promise(),d)}).then(function(a){return a.fadeOut(100).promise()}).then(function(){return d})}else{i=d}i.then(function(a,c){var d=null;if(this.isVisible()){e.css("opacity",0);var f=e.innerHeight();e.html(a);e.css("height","");var g=e.innerHeight();e.css("height",f+"px");d=e.animate({height:g+"px",opacity:1},{duration:150,queue:!1}).promise()}else{e.html(a)}if(c){if(this.isAttached){b.runTemplateJS(c)}else{this.bodyJS=c}}return d}.bind(this)).then(function(a){g.notifyFilterContentUpdated(e);this.getRoot().trigger(h.bodyRendered,this);return a}.bind(this)).then(function(){this.bodyPromise.resolve(e)}.bind(this)).fail(c.exception).always(function(){e.css("height","");e.css("overflow","");e.css("opacity","");M.util.js_complete(f)}).fail(c.exception)}};q.prototype.setBodyContent=function(b){var c=this;return b.then(function(b){var d=b.html,e=b.js;return c.setBody(a.when(d,e))}).catch(function(a){c.hide();throw a})};q.prototype.setFooter=function(d){this.showFooter();this.footerPromise=a.Deferred();var e=this.getFooter();if("string"==typeof d){e.html(d);this.footerPromise.resolve(e)}else{b.render(n.LOADING,{}).then(function(a){e.html(a);return d}).then(function(a,c){e.html(a);if(c){if(this.isAttached){b.runTemplateJS(c)}else{this.footerJS=c}}return e}.bind(this)).then(function(a){this.footerPromise.resolve(a)}.bind(this)).catch(c.exception)}};q.prototype.hasFooterContent=function(){return this.getFooter().children().length?!0:!1};q.prototype.hideFooter=function(){this.getFooter().addClass("hidden")};q.prototype.showFooter=function(){this.getFooter().removeClass("hidden")};q.prototype.setLarge=function(){if(this.isLarge()){return}this.getModal().addClass("modal-lg")};q.prototype.isLarge=function(){return this.getModal().hasClass("modal-lg")};q.prototype.setSmall=function(){if(this.isSmall()){return}this.getModal().removeClass("modal-lg")};q.prototype.isSmall=function(){return!this.getModal().hasClass("modal-lg")};q.prototype.setScrollable=function(a){if(!a){this.getModal()[0].classList.remove("modal-dialog-scrollable");return}this.getModal()[0].classList.add("modal-dialog-scrollable")};q.prototype.calculateZIndex=function(){var b=a(m.DIALOG+", "+m.MENU_BAR+", "+m.HAS_Z_INDEX),c=parseInt(this.root.css("z-index"));b.each(function(b,d){d=a(d);var e=d.css("z-index")?parseInt(d.css("z-index")):0;if(e>c){c=e}});return c};q.prototype.isVisible=function(){return this.root.hasClass("show")};q.prototype.hasFocus=function(){var b=a(document.activeElement);return this.root.is(b)||this.root.has(b).length};q.prototype.hasTransitions=function(){return this.getRoot().hasClass("fade")};q.prototype.getAttachmentPoint=function(){return a(l.getElement()||this.attachmentPoint)};q.prototype.show=function(){if(this.isVisible()){return a.Deferred().resolve()}var b=new j("core/modal:show");if(this.hasFooterContent()){this.showFooter()}else{this.hideFooter()}this.attachToDOM();return this.getBackdrop().then(function(b){var c=this.calculateZIndex(),d=c+2;this.root.css("z-index",d);b.setZIndex(d-1);b.show();this.root.removeClass("hide").addClass("show");this.accessibilityShow();this.getModal().focus();a("body").addClass("modal-open");this.root.trigger(h.shown,this)}.bind(this)).then(b.resolve)};q.prototype.hideIfNotForm=function(){var a=this.modal.find(m.FORM);if(0==a.length){this.hide()}};q.prototype.hide=function(){this.getBackdrop().done(function(b){i.untrapFocus();if(!this.countOtherVisibleModals()){b.hide();a("body").removeClass("modal-open")}var c=parseInt(this.root.css("z-index"));this.root.css("z-index","");b.setZIndex(c-3);this.accessibilityHide();if(this.hasTransitions()){this.getRoot().one("transitionend webkitTransitionEnd oTransitionEnd",function(){this.getRoot().removeClass("show").addClass("hide")}.bind(this))}else{this.getRoot().removeClass("show").addClass("hide")}if(a(document.body).find(this.getRoot()).length){a(document.body).append(this.getRoot())}this.root.trigger(h.hidden,this)}.bind(this))};q.prototype.destroy=function(){this.hide();this.root.remove();this.root.trigger(h.destroyed,this);this.attachmentPoint.remove()};q.prototype.accessibilityShow=function(){k.unhide(this.root.get());k.hideSiblings(this.root.get()[0])};q.prototype.accessibilityHide=function(){k.unhideSiblings(this.root.get()[0]);k.hide(this.root.get())};q.prototype.registerEventListeners=function(){this.getRoot().on("keydown",function(a){if(!this.isVisible()){return}if(a.keyCode==d.escape){if(this.removeOnClose){this.destroy()}else{this.hide()}}}.bind(this));this.getRoot().click(function(b){if(!a(b.target).closest(m.MODAL).length){if(a(b.target).closest(m.CONTAINER).length){var c=a.Event(h.outsideClick);this.getRoot().trigger(c,this);if(!c.isDefaultPrevented()){this.hideIfNotForm()}}}}.bind(this));e.define(this.getModal(),[e.events.activate]);this.getModal().on(e.events.activate,m.HIDE,function(a,b){this.hide();b.originalEvent.preventDefault()}.bind(this))};q.prototype.registerCloseOnCancel=function(){this.getModal().on(e.events.activate,this.getActionSelector("cancel"),function(b,c){var d=a.Event(h.cancel);this.getRoot().trigger(d,this);if(!d.isDefaultPrevented()){c.originalEvent.preventDefault();if(this.removeOnClose){this.destroy()}else{this.hide()}}}.bind(this))};q.prototype.registerCloseOnSave=function(){this.getModal().on(e.events.activate,this.getActionSelector("save"),function(b,c){var d=a.Event(h.save);this.getRoot().trigger(d,this);if(!d.isDefaultPrevented()){c.originalEvent.preventDefault();if(this.removeOnClose){this.destroy()}else{this.hide()}}}.bind(this))};q.prototype.asyncSet=function(b,d){var e=b;if("object"!==_typeof(b)||!b.hasOwnProperty("then")){e=a.Deferred();e.resolve(b)}e.then(function(a){d(a)}).fail(c.exception);return e};q.prototype.setButtonText=function(a,b){var c=this.getFooter().find(this.getActionSelector(a));if(!c){throw new Error("Unable to find the '"+a+"' button")}return this.asyncSet(b,c.text.bind(c))};q.prototype.getActionSelector=function(a){return"[data-action='"+a+"']"};q.prototype.setRemoveOnClose=function(a){this.removeOnClose=a};return q});
 //# sourceMappingURL=modal.min.js.map
diff --git a/lib/amd/build/modal.min.js.map b/lib/amd/build/modal.min.js.map
index d4e3b8a85a5..74341cf6b5d 100644
--- a/lib/amd/build/modal.min.js.map
+++ b/lib/amd/build/modal.min.js.map
@@ -1 +1 @@
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This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * Contain the logic for modals.\n *\n * @module     core/modal\n * @class      modal\n * @package    core\n * @copyright  2016 Ryan Wyllie <ryan@moodle.com>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\ndefine([\n    'jquery',\n    'core/templates',\n    'core/notification',\n    'core/key_codes',\n    'core/custom_interaction_events',\n    'core/modal_backdrop',\n    'core/event',\n    'core/modal_events',\n    'core/local/aria/focuslock',\n    'core/pending',\n    'core/aria',\n    'core/fullscreen'\n], function(\n    $,\n    Templates,\n    Notification,\n    KeyCodes,\n    CustomEvents,\n    ModalBackdrop,\n    Event,\n    ModalEvents,\n    FocusLock,\n    Pending,\n    Aria,\n    Fullscreen\n) {\n\n    var SELECTORS = {\n        CONTAINER: '[data-region=\"modal-container\"]',\n        MODAL: '[data-region=\"modal\"]',\n        HEADER: '[data-region=\"header\"]',\n        TITLE: '[data-region=\"title\"]',\n        BODY: '[data-region=\"body\"]',\n        FOOTER: '[data-region=\"footer\"]',\n        HIDE: '[data-action=\"hide\"]',\n        DIALOG: '[role=dialog]',\n        FORM: 'form',\n        MENU_BAR: '[role=menubar]',\n        HAS_Z_INDEX: '.moodle-has-zindex',\n        CAN_RECEIVE_FOCUS: 'input:not([type=\"hidden\"]), a[href], button, textarea, select, [tabindex]',\n    };\n\n    var TEMPLATES = {\n        LOADING: 'core/loading',\n        BACKDROP: 'core/modal_backdrop',\n    };\n\n    /**\n     * Module singleton for the backdrop to be reused by all Modal instances.\n     */\n    var backdropPromise;\n\n    /**\n     * A counter that gets incremented for each modal created. This can be\n     * used to generate unique values for the modals.\n     */\n    var modalCounter = 0;\n\n    /**\n     * Constructor for the Modal.\n     *\n     * @param {object} root The root jQuery element for the modal\n     */\n    var Modal = function(root) {\n        this.root = $(root);\n        this.modal = this.root.find(SELECTORS.MODAL);\n        this.header = this.modal.find(SELECTORS.HEADER);\n        this.headerPromise = $.Deferred();\n        this.title = this.header.find(SELECTORS.TITLE);\n        this.titlePromise = $.Deferred();\n        this.body = this.modal.find(SELECTORS.BODY);\n        this.bodyPromise = $.Deferred();\n        this.footer = this.modal.find(SELECTORS.FOOTER);\n        this.footerPromise = $.Deferred();\n        this.hiddenSiblings = [];\n        this.isAttached = false;\n        this.bodyJS = null;\n        this.footerJS = null;\n        this.modalCount = modalCounter++;\n        this.attachmentPoint = document.createElement('div');\n        document.body.append(this.attachmentPoint);\n\n        if (!this.root.is(SELECTORS.CONTAINER)) {\n            Notification.exception({message: 'Element is not a modal container'});\n        }\n\n        if (!this.modal.length) {\n            Notification.exception({message: 'Container does not contain a modal'});\n        }\n\n        if (!this.header.length) {\n            Notification.exception({message: 'Modal is missing a header region'});\n        }\n\n        if (!this.title.length) {\n            Notification.exception({message: 'Modal header is missing a title region'});\n        }\n\n        if (!this.body.length) {\n            Notification.exception({message: 'Modal is missing a body region'});\n        }\n\n        if (!this.footer.length) {\n            Notification.exception({message: 'Modal is missing a footer region'});\n        }\n\n        this.registerEventListeners();\n    };\n\n    /**\n     * Attach the modal to the correct part of the page.\n     *\n     * If it hasn't already been added it runs any\n     * javascript that has been cached until now.\n     *\n     * @method attachToDOM\n     */\n    Modal.prototype.attachToDOM = function() {\n        this.getAttachmentPoint().append(this.root);\n\n        if (this.isAttached) {\n            return;\n        }\n\n        FocusLock.trapFocus(this.root[0]);\n\n        // If we'd cached any JS then we can run it how that the modal is\n        // attached to the DOM.\n        if (this.bodyJS) {\n            Templates.runTemplateJS(this.bodyJS);\n            this.bodyJS = null;\n        }\n\n        if (this.footerJS) {\n            Templates.runTemplateJS(this.footerJS);\n            this.footerJS = null;\n        }\n\n        this.isAttached = true;\n    };\n\n    /**\n     * Count the number of other visible modals (not including this one).\n     *\n     * @method countOtherVisibleModals\n     * @return {int}\n     */\n    Modal.prototype.countOtherVisibleModals = function() {\n        var count = 0;\n        $('body').find(SELECTORS.CONTAINER).each(function(index, element) {\n            element = $(element);\n\n            // If we haven't found ourself and the element is visible.\n            if (!this.root.is(element) && element.hasClass('show')) {\n                count++;\n            }\n        }.bind(this));\n\n        return count;\n    };\n\n    /**\n     * Get the modal backdrop.\n     *\n     * @method getBackdrop\n     * @return {object} jQuery promise\n     */\n    Modal.prototype.getBackdrop = function() {\n        if (!backdropPromise) {\n            backdropPromise = Templates.render(TEMPLATES.BACKDROP, {})\n                .then(function(html) {\n                    var element = $(html);\n\n                    return new ModalBackdrop(element);\n                })\n                .fail(Notification.exception);\n        }\n\n        return backdropPromise;\n    };\n\n    /**\n     * Get the root element of this modal.\n     *\n     * @method getRoot\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getRoot = function() {\n        return this.root;\n    };\n\n    /**\n     * Get the modal element of this modal.\n     *\n     * @method getModal\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getModal = function() {\n        return this.modal;\n    };\n\n    /**\n     * Get the modal title element.\n     *\n     * @method getTitle\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getTitle = function() {\n        return this.title;\n    };\n\n    /**\n     * Get the modal body element.\n     *\n     * @method getBody\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getBody = function() {\n        return this.body;\n    };\n\n    /**\n     * Get the modal footer element.\n     *\n     * @method getFooter\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getFooter = function() {\n        return this.footer;\n    };\n\n    /**\n     * Get a promise resolving to the title region.\n     *\n     * @method getTitlePromise\n     * @return {Promise}\n     */\n    Modal.prototype.getTitlePromise = function() {\n        return this.titlePromise;\n    };\n\n    /**\n     * Get a promise resolving to the body region.\n     *\n     * @method getBodyPromise\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getBodyPromise = function() {\n        return this.bodyPromise;\n    };\n\n    /**\n     * Get a promise resolving to the footer region.\n     *\n     * @method getFooterPromise\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getFooterPromise = function() {\n        return this.footerPromise;\n    };\n\n    /**\n     * Get the unique modal count.\n     *\n     * @method getModalCount\n     * @return {int}\n     */\n    Modal.prototype.getModalCount = function() {\n        return this.modalCount;\n    };\n\n    /**\n     * Set the modal title element.\n     *\n     * This method is overloaded to take either a string value for the title or a jQuery promise that is resolved with\n     * HTML most commonly from a Str.get_string call.\n     *\n     * @method setTitle\n     * @param {(string|object)} value The title string or jQuery promise which resolves to the title.\n     */\n    Modal.prototype.setTitle = function(value) {\n        var title = this.getTitle();\n        this.titlePromise = $.Deferred();\n\n        this.asyncSet(value, title.html.bind(title))\n        .then(function() {\n            this.titlePromise.resolve(title);\n        }.bind(this))\n        .catch(Notification.exception);\n    };\n\n    /**\n     * Set the modal body element.\n     *\n     * This method is overloaded to take either a string value for the body or a jQuery promise that is resolved with\n     * HTML and Javascript most commonly from a Templates.render call.\n     *\n     * @method setBody\n     * @param {(string|object)} value The body string or jQuery promise which resolves to the body.\n     */\n    Modal.prototype.setBody = function(value) {\n        this.bodyPromise = $.Deferred();\n\n        var body = this.getBody();\n\n        if (typeof value === 'string') {\n            // Just set the value if it's a string.\n            body.html(value);\n            Event.notifyFilterContentUpdated(body);\n            this.getRoot().trigger(ModalEvents.bodyRendered, this);\n            this.bodyPromise.resolve(body);\n        } else {\n            var jsPendingId = 'amd-modal-js-pending-id-' + this.getModalCount();\n            M.util.js_pending(jsPendingId);\n            // Otherwise we assume it's a promise to be resolved with\n            // html and javascript.\n            var contentPromise = null;\n            body.css('overflow', 'hidden');\n\n            // Ensure that the `value` is a jQuery Promise.\n            value = $.when(value);\n\n            if (value.state() == 'pending') {\n                // We're still waiting for the body promise to resolve so\n                // let's show a loading icon.\n                var height = body.innerHeight();\n                if (height < 100) {\n                    height = 100;\n                }\n\n                body.animate({height: height + 'px'}, 150);\n\n                body.html('');\n                contentPromise = Templates.render(TEMPLATES.LOADING, {})\n                    .then(function(html) {\n                        var loadingIcon = $(html).hide();\n                        body.html(loadingIcon);\n                        loadingIcon.fadeIn(150);\n\n                        // We only want the loading icon to fade out\n                        // when the content for the body has finished\n                        // loading.\n                        return $.when(loadingIcon.promise(), value);\n                    })\n                    .then(function(loadingIcon) {\n                        // Once the content has finished loading and\n                        // the loading icon has been shown then we can\n                        // fade the icon away to reveal the content.\n                        return loadingIcon.fadeOut(100).promise();\n                    })\n                    .then(function() {\n                        return value;\n                    });\n            } else {\n                // The content is already loaded so let's just display\n                // it to the user. No need for a loading icon.\n                contentPromise = value;\n            }\n\n            // Now we can actually display the content.\n            contentPromise.then(function(html, js) {\n                var result = null;\n\n                if (this.isVisible()) {\n                    // If the modal is visible then we should display\n                    // the content gracefully for the user.\n                    body.css('opacity', 0);\n                    var currentHeight = body.innerHeight();\n                    body.html(html);\n                    // We need to clear any height values we've set here\n                    // in order to measure the height of the content being\n                    // added. This then allows us to animate the height\n                    // transition.\n                    body.css('height', '');\n                    var newHeight = body.innerHeight();\n                    body.css('height', currentHeight + 'px');\n                    result = body.animate(\n                        {height: newHeight + 'px', opacity: 1},\n                        {duration: 150, queue: false}\n                    ).promise();\n                } else {\n                    // Since the modal isn't visible we can just immediately\n                    // set the content. No need to animate it.\n                    body.html(html);\n                }\n\n                if (js) {\n                    if (this.isAttached) {\n                        // If we're in the DOM then run the JS immediately.\n                        Templates.runTemplateJS(js);\n                    } else {\n                        // Otherwise cache it to be run when we're attached.\n                        this.bodyJS = js;\n                    }\n                }\n\n                return result;\n            }.bind(this))\n            .then(function(result) {\n                Event.notifyFilterContentUpdated(body);\n                this.getRoot().trigger(ModalEvents.bodyRendered, this);\n                return result;\n            }.bind(this))\n            .then(function() {\n                this.bodyPromise.resolve(body);\n                return;\n            }.bind(this))\n            .fail(Notification.exception)\n            .always(function() {\n                // When we're done displaying all of the content we need\n                // to clear the custom values we've set here.\n                body.css('height', '');\n                body.css('overflow', '');\n                body.css('opacity', '');\n                M.util.js_complete(jsPendingId);\n\n                return;\n            })\n            .fail(Notification.exception);\n        }\n    };\n\n    /**\n     * Alternative to setBody() that can be used from non-Jquery modules\n     *\n     * @param {Promise} promise promise that returns {html, js} object\n     * @return {Promise}\n     */\n    Modal.prototype.setBodyContent = function(promise) {\n        // Call the leegacy API for now and pass it a jQuery Promise.\n        // This is a non-spec feature of jQuery and cannot be produced with spec promises.\n        // We can encourage people to migrate to this approach, and in future we can swap\n        // it so that setBody() calls setBodyPromise().\n        return promise.then(({html, js}) => this.setBody($.when(html, js)));\n    };\n\n    /**\n     * Set the modal footer element. The footer element is made visible, if it\n     * isn't already.\n     *\n     * This method is overloaded to take either a string\n     * value for the body or a jQuery promise that is resolved with HTML and Javascript\n     * most commonly from a Templates.render call.\n     *\n     * @method setFooter\n     * @param {(string|object)} value The footer string or jQuery promise\n     */\n    Modal.prototype.setFooter = function(value) {\n        // Make sure the footer is visible.\n        this.showFooter();\n        this.footerPromise = $.Deferred();\n\n        var footer = this.getFooter();\n\n        if (typeof value === 'string') {\n            // Just set the value if it's a string.\n            footer.html(value);\n            this.footerPromise.resolve(footer);\n        } else {\n            // Otherwise we assume it's a promise to be resolved with\n            // html and javascript.\n            Templates.render(TEMPLATES.LOADING, {})\n            .then(function(html) {\n                footer.html(html);\n\n                return value;\n            })\n            .then(function(html, js) {\n                footer.html(html);\n\n                if (js) {\n                    if (this.isAttached) {\n                        // If we're in the DOM then run the JS immediately.\n                        Templates.runTemplateJS(js);\n                    } else {\n                        // Otherwise cache it to be run when we're attached.\n                        this.footerJS = js;\n                    }\n                }\n\n                return footer;\n            }.bind(this))\n            .then(function(footer) {\n                this.footerPromise.resolve(footer);\n                return;\n            }.bind(this))\n            .catch(Notification.exception);\n        }\n    };\n\n    /**\n     * Check if the footer has any content in it.\n     *\n     * @method hasFooterContent\n     * @return {bool}\n     */\n    Modal.prototype.hasFooterContent = function() {\n        return this.getFooter().children().length ? true : false;\n    };\n\n    /**\n     * Hide the footer element.\n     *\n     * @method hideFooter\n     */\n    Modal.prototype.hideFooter = function() {\n        this.getFooter().addClass('hidden');\n    };\n\n    /**\n     * Show the footer element.\n     *\n     * @method showFooter\n     */\n    Modal.prototype.showFooter = function() {\n        this.getFooter().removeClass('hidden');\n    };\n\n    /**\n     * Mark the modal as a large modal.\n     *\n     * @method setLarge\n     */\n    Modal.prototype.setLarge = function() {\n        if (this.isLarge()) {\n            return;\n        }\n\n        this.getModal().addClass('modal-lg');\n    };\n\n    /**\n     * Check if the modal is a large modal.\n     *\n     * @method isLarge\n     * @return {bool}\n     */\n    Modal.prototype.isLarge = function() {\n        return this.getModal().hasClass('modal-lg');\n    };\n\n    /**\n     * Mark the modal as a small modal.\n     *\n     * @method setSmall\n     */\n    Modal.prototype.setSmall = function() {\n        if (this.isSmall()) {\n            return;\n        }\n\n        this.getModal().removeClass('modal-lg');\n    };\n\n    /**\n     * Check if the modal is a small modal.\n     *\n     * @method isSmall\n     * @return {bool}\n     */\n    Modal.prototype.isSmall = function() {\n        return !this.getModal().hasClass('modal-lg');\n    };\n\n    /**\n     * Set this modal to be scrollable or not.\n     *\n     * @method setScrollable\n     * @param {bool} value Whether the modal is scrollable or not\n     */\n    Modal.prototype.setScrollable = function(value) {\n        if (!value) {\n            this.getModal()[0].classList.remove('modal-dialog-scrollable');\n            return;\n        }\n\n        this.getModal()[0].classList.add('modal-dialog-scrollable');\n    };\n\n\n    /**\n     * Determine the highest z-index value currently on the page.\n     *\n     * @method calculateZIndex\n     * @return {int}\n     */\n    Modal.prototype.calculateZIndex = function() {\n        var items = $(SELECTORS.DIALOG + ', ' + SELECTORS.MENU_BAR + ', ' + SELECTORS.HAS_Z_INDEX);\n        var zIndex = parseInt(this.root.css('z-index'));\n\n        items.each(function(index, item) {\n            item = $(item);\n            // Note that webkit browsers won't return the z-index value from the CSS stylesheet\n            // if the element doesn't have a position specified. Instead it'll return \"auto\".\n            var itemZIndex = item.css('z-index') ? parseInt(item.css('z-index')) : 0;\n\n            if (itemZIndex > zIndex) {\n                zIndex = itemZIndex;\n            }\n        });\n\n        return zIndex;\n    };\n\n    /**\n     * Check if this modal is visible.\n     *\n     * @method isVisible\n     * @return {bool}\n     */\n    Modal.prototype.isVisible = function() {\n        return this.root.hasClass('show');\n    };\n\n    /**\n     * Check if this modal has focus.\n     *\n     * @method hasFocus\n     * @return {bool}\n     */\n    Modal.prototype.hasFocus = function() {\n        var target = $(document.activeElement);\n        return this.root.is(target) || this.root.has(target).length;\n    };\n\n    /**\n     * Check if this modal has CSS transitions applied.\n     *\n     * @method hasTransitions\n     * @return {bool}\n     */\n    Modal.prototype.hasTransitions = function() {\n        return this.getRoot().hasClass('fade');\n    };\n\n    /**\n     * Gets the jQuery wrapped node that the Modal should be attached to.\n     *\n     * @returns {jQuery}\n     */\n    Modal.prototype.getAttachmentPoint = function() {\n        return $(Fullscreen.getElement() || this.attachmentPoint);\n    };\n\n    /**\n     * Display this modal. The modal will be attached to the DOM if it hasn't\n     * already been.\n     *\n     * @method show\n     * @returns {Promise}\n     */\n    Modal.prototype.show = function() {\n        if (this.isVisible()) {\n            return $.Deferred().resolve();\n        }\n\n        var pendingPromise = new Pending('core/modal:show');\n\n        if (this.hasFooterContent()) {\n            this.showFooter();\n        } else {\n            this.hideFooter();\n        }\n\n        this.attachToDOM();\n\n        return this.getBackdrop()\n        .then(function(backdrop) {\n            var currentIndex = this.calculateZIndex();\n            var newIndex = currentIndex + 2;\n            var newBackdropIndex = newIndex - 1;\n            this.root.css('z-index', newIndex);\n            backdrop.setZIndex(newBackdropIndex);\n            backdrop.show();\n\n            this.root.removeClass('hide').addClass('show');\n            this.accessibilityShow();\n            this.getModal().focus();\n            $('body').addClass('modal-open');\n            this.root.trigger(ModalEvents.shown, this);\n\n            return;\n        }.bind(this))\n        .then(pendingPromise.resolve);\n    };\n\n    /**\n     * Hide this modal if it does not contain a form.\n     *\n     * @method hideIfNotForm\n     */\n    Modal.prototype.hideIfNotForm = function() {\n        var formElement = this.modal.find(SELECTORS.FORM);\n        if (formElement.length == 0) {\n            this.hide();\n        }\n    };\n\n    /**\n     * Hide this modal.\n     *\n     * @method hide\n     */\n    Modal.prototype.hide = function() {\n        this.getBackdrop().done(function(backdrop) {\n            FocusLock.untrapFocus();\n\n            if (!this.countOtherVisibleModals()) {\n                // Hide the backdrop if we're the last open modal.\n                backdrop.hide();\n                $('body').removeClass('modal-open');\n            }\n\n            var currentIndex = parseInt(this.root.css('z-index'));\n            this.root.css('z-index', '');\n            backdrop.setZIndex(currentIndex - 3);\n\n            this.accessibilityHide();\n\n            if (this.hasTransitions()) {\n                // Wait for CSS transitions to complete before hiding the element.\n                this.getRoot().one('transitionend webkitTransitionEnd oTransitionEnd', function() {\n                    this.getRoot().removeClass('show').addClass('hide');\n                }.bind(this));\n            } else {\n                this.getRoot().removeClass('show').addClass('hide');\n            }\n\n            // Ensure the modal is moved onto the body node if it is still attached to the DOM.\n            if ($(document.body).find(this.getRoot()).length) {\n                $(document.body).append(this.getRoot());\n            }\n\n            this.root.trigger(ModalEvents.hidden, this);\n        }.bind(this));\n    };\n\n    /**\n     * Remove this modal from the DOM.\n     *\n     * @method destroy\n     */\n    Modal.prototype.destroy = function() {\n        this.hide();\n        this.root.remove();\n        this.root.trigger(ModalEvents.destroyed, this);\n        this.attachmentPoint.remove();\n    };\n\n    /**\n     * Sets the appropriate aria attributes on this dialogue and the other\n     * elements in the DOM to ensure that screen readers are able to navigate\n     * the dialogue popup correctly.\n     *\n     * @method accessibilityShow\n     */\n    Modal.prototype.accessibilityShow = function() {\n        // Make us visible to screen readers.\n        Aria.unhide(this.root.get());\n\n        // Hide siblings.\n        Aria.hideSiblings(this.root.get()[0]);\n    };\n\n    /**\n     * Restores the aria visibility on the DOM elements changed when displaying\n     * the dialogue popup and makes the dialogue aria hidden to allow screen\n     * readers to navigate the main page correctly when the dialogue is closed.\n     *\n     * @method accessibilityHide\n     */\n    Modal.prototype.accessibilityHide = function() {\n        // Unhide siblings.\n        Aria.unhideSiblings(this.root.get()[0]);\n\n        // Hide this modal.\n        Aria.hide(this.root.get());\n    };\n\n    /**\n     * Set up all of the event handling for the modal.\n     *\n     * @method registerEventListeners\n     */\n    Modal.prototype.registerEventListeners = function() {\n        this.getRoot().on('keydown', function(e) {\n            if (!this.isVisible()) {\n                return;\n            }\n\n            if (e.keyCode == KeyCodes.escape) {\n                if (this.removeOnClose) {\n                    this.destroy();\n                } else {\n                    this.hide();\n                }\n            }\n        }.bind(this));\n\n        // Listen for clicks on the modal container.\n        this.getRoot().click(function(e) {\n            // If the click wasn't inside the modal element then we should\n            // hide the modal.\n            if (!$(e.target).closest(SELECTORS.MODAL).length) {\n                // The check above fails to detect the click was inside the modal when the DOM tree is already changed.\n                // So, we check if we can still find the container element or not. If not, then the DOM tree is changed.\n                // It's best not to hide the modal in that case.\n                if ($(e.target).closest(SELECTORS.CONTAINER).length) {\n                    var outsideClickEvent = $.Event(ModalEvents.outsideClick);\n                    this.getRoot().trigger(outsideClickEvent, this);\n\n                    if (!outsideClickEvent.isDefaultPrevented()) {\n                        this.hideIfNotForm();\n                    }\n                }\n            }\n        }.bind(this));\n\n        CustomEvents.define(this.getModal(), [CustomEvents.events.activate]);\n        this.getModal().on(CustomEvents.events.activate, SELECTORS.HIDE, function(e, data) {\n            this.hide();\n            data.originalEvent.preventDefault();\n        }.bind(this));\n    };\n\n    /**\n     * Register a listener to close the dialogue when the cancel button is pressed.\n     *\n     * @method registerCloseOnCancel\n     */\n    Modal.prototype.registerCloseOnCancel = function() {\n        // Handle the clicking of the Cancel button.\n        this.getModal().on(CustomEvents.events.activate, this.getActionSelector('cancel'), function(e, data) {\n            var cancelEvent = $.Event(ModalEvents.cancel);\n            this.getRoot().trigger(cancelEvent, this);\n\n            if (!cancelEvent.isDefaultPrevented()) {\n                data.originalEvent.preventDefault();\n\n                if (this.removeOnClose) {\n                    this.destroy();\n                } else {\n                    this.hide();\n                }\n            }\n        }.bind(this));\n    };\n\n    /**\n     * Register a listener to close the dialogue when the save button is pressed.\n     *\n     * @method registerCloseOnSave\n     */\n    Modal.prototype.registerCloseOnSave = function() {\n        // Handle the clicking of the Cancel button.\n        this.getModal().on(CustomEvents.events.activate, this.getActionSelector('save'), function(e, data) {\n            var saveEvent = $.Event(ModalEvents.save);\n            this.getRoot().trigger(saveEvent, this);\n\n            if (!saveEvent.isDefaultPrevented()) {\n                data.originalEvent.preventDefault();\n\n                if (this.removeOnClose) {\n                    this.destroy();\n                } else {\n                    this.hide();\n                }\n            }\n        }.bind(this));\n    };\n\n    /**\n     * Set or resolve and set the value using the function.\n     *\n     * @method asyncSet\n     * @param {(string|object)} value The string or jQuery promise.\n     * @param {function} setFunction The setter\n     * @return {Promise}\n     */\n    Modal.prototype.asyncSet = function(value, setFunction) {\n        var p = value;\n        if (typeof value !== 'object' || !value.hasOwnProperty('then')) {\n            p = $.Deferred();\n            p.resolve(value);\n        }\n\n        p.then(function(content) {\n            setFunction(content);\n\n            return;\n        })\n        .fail(Notification.exception);\n\n        return p;\n    };\n\n    /**\n     * Set the title text of a button.\n     *\n     * This method is overloaded to take either a string value for the button title or a jQuery promise that is resolved with\n     * text most commonly from a Str.get_string call.\n     *\n     * @param {DOMString} action The action of the button\n     * @param {(String|object)} value The button text, or a promise which will resolve to it\n     * @returns {Promise}\n     */\n    Modal.prototype.setButtonText = function(action, value) {\n        const button = this.getFooter().find(this.getActionSelector(action));\n\n        if (!button) {\n            throw new Error(\"Unable to find the '\" + action + \"' button\");\n        }\n\n        return this.asyncSet(value, button.text.bind(button));\n    };\n\n    /**\n     * Get the Selector for an action.\n     *\n     * @param {String} action\n     * @returns {DOMString}\n     */\n    Modal.prototype.getActionSelector = function(action) {\n        return \"[data-action='\" + action + \"']\";\n    };\n\n    /**\n     * Set the flag to remove the modal from the DOM on close.\n     *\n     * @param {Boolean} remove\n     */\n    Modal.prototype.setRemoveOnClose = function(remove) {\n        this.removeOnClose = remove;\n    };\n\n    return Modal;\n});\n"],"file":"modal.min.js"}
\ No newline at end of file
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This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * Contain the logic for modals.\n *\n * @module     core/modal\n * @class      modal\n * @package    core\n * @copyright  2016 Ryan Wyllie <ryan@moodle.com>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\ndefine([\n    'jquery',\n    'core/templates',\n    'core/notification',\n    'core/key_codes',\n    'core/custom_interaction_events',\n    'core/modal_backdrop',\n    'core/event',\n    'core/modal_events',\n    'core/local/aria/focuslock',\n    'core/pending',\n    'core/aria',\n    'core/fullscreen'\n], function(\n    $,\n    Templates,\n    Notification,\n    KeyCodes,\n    CustomEvents,\n    ModalBackdrop,\n    Event,\n    ModalEvents,\n    FocusLock,\n    Pending,\n    Aria,\n    Fullscreen\n) {\n\n    var SELECTORS = {\n        CONTAINER: '[data-region=\"modal-container\"]',\n        MODAL: '[data-region=\"modal\"]',\n        HEADER: '[data-region=\"header\"]',\n        TITLE: '[data-region=\"title\"]',\n        BODY: '[data-region=\"body\"]',\n        FOOTER: '[data-region=\"footer\"]',\n        HIDE: '[data-action=\"hide\"]',\n        DIALOG: '[role=dialog]',\n        FORM: 'form',\n        MENU_BAR: '[role=menubar]',\n        HAS_Z_INDEX: '.moodle-has-zindex',\n        CAN_RECEIVE_FOCUS: 'input:not([type=\"hidden\"]), a[href], button, textarea, select, [tabindex]',\n    };\n\n    var TEMPLATES = {\n        LOADING: 'core/loading',\n        BACKDROP: 'core/modal_backdrop',\n    };\n\n    /**\n     * Module singleton for the backdrop to be reused by all Modal instances.\n     */\n    var backdropPromise;\n\n    /**\n     * A counter that gets incremented for each modal created. This can be\n     * used to generate unique values for the modals.\n     */\n    var modalCounter = 0;\n\n    /**\n     * Constructor for the Modal.\n     *\n     * @param {object} root The root jQuery element for the modal\n     */\n    var Modal = function(root) {\n        this.root = $(root);\n        this.modal = this.root.find(SELECTORS.MODAL);\n        this.header = this.modal.find(SELECTORS.HEADER);\n        this.headerPromise = $.Deferred();\n        this.title = this.header.find(SELECTORS.TITLE);\n        this.titlePromise = $.Deferred();\n        this.body = this.modal.find(SELECTORS.BODY);\n        this.bodyPromise = $.Deferred();\n        this.footer = this.modal.find(SELECTORS.FOOTER);\n        this.footerPromise = $.Deferred();\n        this.hiddenSiblings = [];\n        this.isAttached = false;\n        this.bodyJS = null;\n        this.footerJS = null;\n        this.modalCount = modalCounter++;\n        this.attachmentPoint = document.createElement('div');\n        document.body.append(this.attachmentPoint);\n\n        if (!this.root.is(SELECTORS.CONTAINER)) {\n            Notification.exception({message: 'Element is not a modal container'});\n        }\n\n        if (!this.modal.length) {\n            Notification.exception({message: 'Container does not contain a modal'});\n        }\n\n        if (!this.header.length) {\n            Notification.exception({message: 'Modal is missing a header region'});\n        }\n\n        if (!this.title.length) {\n            Notification.exception({message: 'Modal header is missing a title region'});\n        }\n\n        if (!this.body.length) {\n            Notification.exception({message: 'Modal is missing a body region'});\n        }\n\n        if (!this.footer.length) {\n            Notification.exception({message: 'Modal is missing a footer region'});\n        }\n\n        this.registerEventListeners();\n    };\n\n    /**\n     * Attach the modal to the correct part of the page.\n     *\n     * If it hasn't already been added it runs any\n     * javascript that has been cached until now.\n     *\n     * @method attachToDOM\n     */\n    Modal.prototype.attachToDOM = function() {\n        this.getAttachmentPoint().append(this.root);\n\n        if (this.isAttached) {\n            return;\n        }\n\n        FocusLock.trapFocus(this.root[0]);\n\n        // If we'd cached any JS then we can run it how that the modal is\n        // attached to the DOM.\n        if (this.bodyJS) {\n            Templates.runTemplateJS(this.bodyJS);\n            this.bodyJS = null;\n        }\n\n        if (this.footerJS) {\n            Templates.runTemplateJS(this.footerJS);\n            this.footerJS = null;\n        }\n\n        this.isAttached = true;\n    };\n\n    /**\n     * Count the number of other visible modals (not including this one).\n     *\n     * @method countOtherVisibleModals\n     * @return {int}\n     */\n    Modal.prototype.countOtherVisibleModals = function() {\n        var count = 0;\n        $('body').find(SELECTORS.CONTAINER).each(function(index, element) {\n            element = $(element);\n\n            // If we haven't found ourself and the element is visible.\n            if (!this.root.is(element) && element.hasClass('show')) {\n                count++;\n            }\n        }.bind(this));\n\n        return count;\n    };\n\n    /**\n     * Get the modal backdrop.\n     *\n     * @method getBackdrop\n     * @return {object} jQuery promise\n     */\n    Modal.prototype.getBackdrop = function() {\n        if (!backdropPromise) {\n            backdropPromise = Templates.render(TEMPLATES.BACKDROP, {})\n                .then(function(html) {\n                    var element = $(html);\n\n                    return new ModalBackdrop(element);\n                })\n                .fail(Notification.exception);\n        }\n\n        return backdropPromise;\n    };\n\n    /**\n     * Get the root element of this modal.\n     *\n     * @method getRoot\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getRoot = function() {\n        return this.root;\n    };\n\n    /**\n     * Get the modal element of this modal.\n     *\n     * @method getModal\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getModal = function() {\n        return this.modal;\n    };\n\n    /**\n     * Get the modal title element.\n     *\n     * @method getTitle\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getTitle = function() {\n        return this.title;\n    };\n\n    /**\n     * Get the modal body element.\n     *\n     * @method getBody\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getBody = function() {\n        return this.body;\n    };\n\n    /**\n     * Get the modal footer element.\n     *\n     * @method getFooter\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getFooter = function() {\n        return this.footer;\n    };\n\n    /**\n     * Get a promise resolving to the title region.\n     *\n     * @method getTitlePromise\n     * @return {Promise}\n     */\n    Modal.prototype.getTitlePromise = function() {\n        return this.titlePromise;\n    };\n\n    /**\n     * Get a promise resolving to the body region.\n     *\n     * @method getBodyPromise\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getBodyPromise = function() {\n        return this.bodyPromise;\n    };\n\n    /**\n     * Get a promise resolving to the footer region.\n     *\n     * @method getFooterPromise\n     * @return {object} jQuery object\n     */\n    Modal.prototype.getFooterPromise = function() {\n        return this.footerPromise;\n    };\n\n    /**\n     * Get the unique modal count.\n     *\n     * @method getModalCount\n     * @return {int}\n     */\n    Modal.prototype.getModalCount = function() {\n        return this.modalCount;\n    };\n\n    /**\n     * Set the modal title element.\n     *\n     * This method is overloaded to take either a string value for the title or a jQuery promise that is resolved with\n     * HTML most commonly from a Str.get_string call.\n     *\n     * @method setTitle\n     * @param {(string|object)} value The title string or jQuery promise which resolves to the title.\n     */\n    Modal.prototype.setTitle = function(value) {\n        var title = this.getTitle();\n        this.titlePromise = $.Deferred();\n\n        this.asyncSet(value, title.html.bind(title))\n        .then(function() {\n            this.titlePromise.resolve(title);\n        }.bind(this))\n        .catch(Notification.exception);\n    };\n\n    /**\n     * Set the modal body element.\n     *\n     * This method is overloaded to take either a string value for the body or a jQuery promise that is resolved with\n     * HTML and Javascript most commonly from a Templates.render call.\n     *\n     * @method setBody\n     * @param {(string|object)} value The body string or jQuery promise which resolves to the body.\n     */\n    Modal.prototype.setBody = function(value) {\n        this.bodyPromise = $.Deferred();\n\n        var body = this.getBody();\n\n        if (typeof value === 'string') {\n            // Just set the value if it's a string.\n            body.html(value);\n            Event.notifyFilterContentUpdated(body);\n            this.getRoot().trigger(ModalEvents.bodyRendered, this);\n            this.bodyPromise.resolve(body);\n        } else {\n            var jsPendingId = 'amd-modal-js-pending-id-' + this.getModalCount();\n            M.util.js_pending(jsPendingId);\n            // Otherwise we assume it's a promise to be resolved with\n            // html and javascript.\n            var contentPromise = null;\n            body.css('overflow', 'hidden');\n\n            // Ensure that the `value` is a jQuery Promise.\n            value = $.when(value);\n\n            if (value.state() == 'pending') {\n                // We're still waiting for the body promise to resolve so\n                // let's show a loading icon.\n                var height = body.innerHeight();\n                if (height < 100) {\n                    height = 100;\n                }\n\n                body.animate({height: height + 'px'}, 150);\n\n                body.html('');\n                contentPromise = Templates.render(TEMPLATES.LOADING, {})\n                    .then(function(html) {\n                        var loadingIcon = $(html).hide();\n                        body.html(loadingIcon);\n                        loadingIcon.fadeIn(150);\n\n                        // We only want the loading icon to fade out\n                        // when the content for the body has finished\n                        // loading.\n                        return $.when(loadingIcon.promise(), value);\n                    })\n                    .then(function(loadingIcon) {\n                        // Once the content has finished loading and\n                        // the loading icon has been shown then we can\n                        // fade the icon away to reveal the content.\n                        return loadingIcon.fadeOut(100).promise();\n                    })\n                    .then(function() {\n                        return value;\n                    });\n            } else {\n                // The content is already loaded so let's just display\n                // it to the user. No need for a loading icon.\n                contentPromise = value;\n            }\n\n            // Now we can actually display the content.\n            contentPromise.then(function(html, js) {\n                var result = null;\n\n                if (this.isVisible()) {\n                    // If the modal is visible then we should display\n                    // the content gracefully for the user.\n                    body.css('opacity', 0);\n                    var currentHeight = body.innerHeight();\n                    body.html(html);\n                    // We need to clear any height values we've set here\n                    // in order to measure the height of the content being\n                    // added. This then allows us to animate the height\n                    // transition.\n                    body.css('height', '');\n                    var newHeight = body.innerHeight();\n                    body.css('height', currentHeight + 'px');\n                    result = body.animate(\n                        {height: newHeight + 'px', opacity: 1},\n                        {duration: 150, queue: false}\n                    ).promise();\n                } else {\n                    // Since the modal isn't visible we can just immediately\n                    // set the content. No need to animate it.\n                    body.html(html);\n                }\n\n                if (js) {\n                    if (this.isAttached) {\n                        // If we're in the DOM then run the JS immediately.\n                        Templates.runTemplateJS(js);\n                    } else {\n                        // Otherwise cache it to be run when we're attached.\n                        this.bodyJS = js;\n                    }\n                }\n\n                return result;\n            }.bind(this))\n            .then(function(result) {\n                Event.notifyFilterContentUpdated(body);\n                this.getRoot().trigger(ModalEvents.bodyRendered, this);\n                return result;\n            }.bind(this))\n            .then(function() {\n                this.bodyPromise.resolve(body);\n                return;\n            }.bind(this))\n            .fail(Notification.exception)\n            .always(function() {\n                // When we're done displaying all of the content we need\n                // to clear the custom values we've set here.\n                body.css('height', '');\n                body.css('overflow', '');\n                body.css('opacity', '');\n                M.util.js_complete(jsPendingId);\n\n                return;\n            })\n            .fail(Notification.exception);\n        }\n    };\n\n    /**\n     * Alternative to setBody() that can be used from non-Jquery modules\n     *\n     * @param {Promise} promise promise that returns {html, js} object\n     * @return {Promise}\n     */\n    Modal.prototype.setBodyContent = function(promise) {\n        // Call the leegacy API for now and pass it a jQuery Promise.\n        // This is a non-spec feature of jQuery and cannot be produced with spec promises.\n        // We can encourage people to migrate to this approach, and in future we can swap\n        // it so that setBody() calls setBodyPromise().\n        return promise.then(({html, js}) => this.setBody($.when(html, js)))\n            .catch(exception => {\n                this.hide();\n                throw exception;\n            });\n    };\n\n    /**\n     * Set the modal footer element. The footer element is made visible, if it\n     * isn't already.\n     *\n     * This method is overloaded to take either a string\n     * value for the body or a jQuery promise that is resolved with HTML and Javascript\n     * most commonly from a Templates.render call.\n     *\n     * @method setFooter\n     * @param {(string|object)} value The footer string or jQuery promise\n     */\n    Modal.prototype.setFooter = function(value) {\n        // Make sure the footer is visible.\n        this.showFooter();\n        this.footerPromise = $.Deferred();\n\n        var footer = this.getFooter();\n\n        if (typeof value === 'string') {\n            // Just set the value if it's a string.\n            footer.html(value);\n            this.footerPromise.resolve(footer);\n        } else {\n            // Otherwise we assume it's a promise to be resolved with\n            // html and javascript.\n            Templates.render(TEMPLATES.LOADING, {})\n            .then(function(html) {\n                footer.html(html);\n\n                return value;\n            })\n            .then(function(html, js) {\n                footer.html(html);\n\n                if (js) {\n                    if (this.isAttached) {\n                        // If we're in the DOM then run the JS immediately.\n                        Templates.runTemplateJS(js);\n                    } else {\n                        // Otherwise cache it to be run when we're attached.\n                        this.footerJS = js;\n                    }\n                }\n\n                return footer;\n            }.bind(this))\n            .then(function(footer) {\n                this.footerPromise.resolve(footer);\n                return;\n            }.bind(this))\n            .catch(Notification.exception);\n        }\n    };\n\n    /**\n     * Check if the footer has any content in it.\n     *\n     * @method hasFooterContent\n     * @return {bool}\n     */\n    Modal.prototype.hasFooterContent = function() {\n        return this.getFooter().children().length ? true : false;\n    };\n\n    /**\n     * Hide the footer element.\n     *\n     * @method hideFooter\n     */\n    Modal.prototype.hideFooter = function() {\n        this.getFooter().addClass('hidden');\n    };\n\n    /**\n     * Show the footer element.\n     *\n     * @method showFooter\n     */\n    Modal.prototype.showFooter = function() {\n        this.getFooter().removeClass('hidden');\n    };\n\n    /**\n     * Mark the modal as a large modal.\n     *\n     * @method setLarge\n     */\n    Modal.prototype.setLarge = function() {\n        if (this.isLarge()) {\n            return;\n        }\n\n        this.getModal().addClass('modal-lg');\n    };\n\n    /**\n     * Check if the modal is a large modal.\n     *\n     * @method isLarge\n     * @return {bool}\n     */\n    Modal.prototype.isLarge = function() {\n        return this.getModal().hasClass('modal-lg');\n    };\n\n    /**\n     * Mark the modal as a small modal.\n     *\n     * @method setSmall\n     */\n    Modal.prototype.setSmall = function() {\n        if (this.isSmall()) {\n            return;\n        }\n\n        this.getModal().removeClass('modal-lg');\n    };\n\n    /**\n     * Check if the modal is a small modal.\n     *\n     * @method isSmall\n     * @return {bool}\n     */\n    Modal.prototype.isSmall = function() {\n        return !this.getModal().hasClass('modal-lg');\n    };\n\n    /**\n     * Set this modal to be scrollable or not.\n     *\n     * @method setScrollable\n     * @param {bool} value Whether the modal is scrollable or not\n     */\n    Modal.prototype.setScrollable = function(value) {\n        if (!value) {\n            this.getModal()[0].classList.remove('modal-dialog-scrollable');\n            return;\n        }\n\n        this.getModal()[0].classList.add('modal-dialog-scrollable');\n    };\n\n\n    /**\n     * Determine the highest z-index value currently on the page.\n     *\n     * @method calculateZIndex\n     * @return {int}\n     */\n    Modal.prototype.calculateZIndex = function() {\n        var items = $(SELECTORS.DIALOG + ', ' + SELECTORS.MENU_BAR + ', ' + SELECTORS.HAS_Z_INDEX);\n        var zIndex = parseInt(this.root.css('z-index'));\n\n        items.each(function(index, item) {\n            item = $(item);\n            // Note that webkit browsers won't return the z-index value from the CSS stylesheet\n            // if the element doesn't have a position specified. Instead it'll return \"auto\".\n            var itemZIndex = item.css('z-index') ? parseInt(item.css('z-index')) : 0;\n\n            if (itemZIndex > zIndex) {\n                zIndex = itemZIndex;\n            }\n        });\n\n        return zIndex;\n    };\n\n    /**\n     * Check if this modal is visible.\n     *\n     * @method isVisible\n     * @return {bool}\n     */\n    Modal.prototype.isVisible = function() {\n        return this.root.hasClass('show');\n    };\n\n    /**\n     * Check if this modal has focus.\n     *\n     * @method hasFocus\n     * @return {bool}\n     */\n    Modal.prototype.hasFocus = function() {\n        var target = $(document.activeElement);\n        return this.root.is(target) || this.root.has(target).length;\n    };\n\n    /**\n     * Check if this modal has CSS transitions applied.\n     *\n     * @method hasTransitions\n     * @return {bool}\n     */\n    Modal.prototype.hasTransitions = function() {\n        return this.getRoot().hasClass('fade');\n    };\n\n    /**\n     * Gets the jQuery wrapped node that the Modal should be attached to.\n     *\n     * @returns {jQuery}\n     */\n    Modal.prototype.getAttachmentPoint = function() {\n        return $(Fullscreen.getElement() || this.attachmentPoint);\n    };\n\n    /**\n     * Display this modal. The modal will be attached to the DOM if it hasn't\n     * already been.\n     *\n     * @method show\n     * @returns {Promise}\n     */\n    Modal.prototype.show = function() {\n        if (this.isVisible()) {\n            return $.Deferred().resolve();\n        }\n\n        var pendingPromise = new Pending('core/modal:show');\n\n        if (this.hasFooterContent()) {\n            this.showFooter();\n        } else {\n            this.hideFooter();\n        }\n\n        this.attachToDOM();\n\n        return this.getBackdrop()\n        .then(function(backdrop) {\n            var currentIndex = this.calculateZIndex();\n            var newIndex = currentIndex + 2;\n            var newBackdropIndex = newIndex - 1;\n            this.root.css('z-index', newIndex);\n            backdrop.setZIndex(newBackdropIndex);\n            backdrop.show();\n\n            this.root.removeClass('hide').addClass('show');\n            this.accessibilityShow();\n            this.getModal().focus();\n            $('body').addClass('modal-open');\n            this.root.trigger(ModalEvents.shown, this);\n\n            return;\n        }.bind(this))\n        .then(pendingPromise.resolve);\n    };\n\n    /**\n     * Hide this modal if it does not contain a form.\n     *\n     * @method hideIfNotForm\n     */\n    Modal.prototype.hideIfNotForm = function() {\n        var formElement = this.modal.find(SELECTORS.FORM);\n        if (formElement.length == 0) {\n            this.hide();\n        }\n    };\n\n    /**\n     * Hide this modal.\n     *\n     * @method hide\n     */\n    Modal.prototype.hide = function() {\n        this.getBackdrop().done(function(backdrop) {\n            FocusLock.untrapFocus();\n\n            if (!this.countOtherVisibleModals()) {\n                // Hide the backdrop if we're the last open modal.\n                backdrop.hide();\n                $('body').removeClass('modal-open');\n            }\n\n            var currentIndex = parseInt(this.root.css('z-index'));\n            this.root.css('z-index', '');\n            backdrop.setZIndex(currentIndex - 3);\n\n            this.accessibilityHide();\n\n            if (this.hasTransitions()) {\n                // Wait for CSS transitions to complete before hiding the element.\n                this.getRoot().one('transitionend webkitTransitionEnd oTransitionEnd', function() {\n                    this.getRoot().removeClass('show').addClass('hide');\n                }.bind(this));\n            } else {\n                this.getRoot().removeClass('show').addClass('hide');\n            }\n\n            // Ensure the modal is moved onto the body node if it is still attached to the DOM.\n            if ($(document.body).find(this.getRoot()).length) {\n                $(document.body).append(this.getRoot());\n            }\n\n            this.root.trigger(ModalEvents.hidden, this);\n        }.bind(this));\n    };\n\n    /**\n     * Remove this modal from the DOM.\n     *\n     * @method destroy\n     */\n    Modal.prototype.destroy = function() {\n        this.hide();\n        this.root.remove();\n        this.root.trigger(ModalEvents.destroyed, this);\n        this.attachmentPoint.remove();\n    };\n\n    /**\n     * Sets the appropriate aria attributes on this dialogue and the other\n     * elements in the DOM to ensure that screen readers are able to navigate\n     * the dialogue popup correctly.\n     *\n     * @method accessibilityShow\n     */\n    Modal.prototype.accessibilityShow = function() {\n        // Make us visible to screen readers.\n        Aria.unhide(this.root.get());\n\n        // Hide siblings.\n        Aria.hideSiblings(this.root.get()[0]);\n    };\n\n    /**\n     * Restores the aria visibility on the DOM elements changed when displaying\n     * the dialogue popup and makes the dialogue aria hidden to allow screen\n     * readers to navigate the main page correctly when the dialogue is closed.\n     *\n     * @method accessibilityHide\n     */\n    Modal.prototype.accessibilityHide = function() {\n        // Unhide siblings.\n        Aria.unhideSiblings(this.root.get()[0]);\n\n        // Hide this modal.\n        Aria.hide(this.root.get());\n    };\n\n    /**\n     * Set up all of the event handling for the modal.\n     *\n     * @method registerEventListeners\n     */\n    Modal.prototype.registerEventListeners = function() {\n        this.getRoot().on('keydown', function(e) {\n            if (!this.isVisible()) {\n                return;\n            }\n\n            if (e.keyCode == KeyCodes.escape) {\n                if (this.removeOnClose) {\n                    this.destroy();\n                } else {\n                    this.hide();\n                }\n            }\n        }.bind(this));\n\n        // Listen for clicks on the modal container.\n        this.getRoot().click(function(e) {\n            // If the click wasn't inside the modal element then we should\n            // hide the modal.\n            if (!$(e.target).closest(SELECTORS.MODAL).length) {\n                // The check above fails to detect the click was inside the modal when the DOM tree is already changed.\n                // So, we check if we can still find the container element or not. If not, then the DOM tree is changed.\n                // It's best not to hide the modal in that case.\n                if ($(e.target).closest(SELECTORS.CONTAINER).length) {\n                    var outsideClickEvent = $.Event(ModalEvents.outsideClick);\n                    this.getRoot().trigger(outsideClickEvent, this);\n\n                    if (!outsideClickEvent.isDefaultPrevented()) {\n                        this.hideIfNotForm();\n                    }\n                }\n            }\n        }.bind(this));\n\n        CustomEvents.define(this.getModal(), [CustomEvents.events.activate]);\n        this.getModal().on(CustomEvents.events.activate, SELECTORS.HIDE, function(e, data) {\n            this.hide();\n            data.originalEvent.preventDefault();\n        }.bind(this));\n    };\n\n    /**\n     * Register a listener to close the dialogue when the cancel button is pressed.\n     *\n     * @method registerCloseOnCancel\n     */\n    Modal.prototype.registerCloseOnCancel = function() {\n        // Handle the clicking of the Cancel button.\n        this.getModal().on(CustomEvents.events.activate, this.getActionSelector('cancel'), function(e, data) {\n            var cancelEvent = $.Event(ModalEvents.cancel);\n            this.getRoot().trigger(cancelEvent, this);\n\n            if (!cancelEvent.isDefaultPrevented()) {\n                data.originalEvent.preventDefault();\n\n                if (this.removeOnClose) {\n                    this.destroy();\n                } else {\n                    this.hide();\n                }\n            }\n        }.bind(this));\n    };\n\n    /**\n     * Register a listener to close the dialogue when the save button is pressed.\n     *\n     * @method registerCloseOnSave\n     */\n    Modal.prototype.registerCloseOnSave = function() {\n        // Handle the clicking of the Cancel button.\n        this.getModal().on(CustomEvents.events.activate, this.getActionSelector('save'), function(e, data) {\n            var saveEvent = $.Event(ModalEvents.save);\n            this.getRoot().trigger(saveEvent, this);\n\n            if (!saveEvent.isDefaultPrevented()) {\n                data.originalEvent.preventDefault();\n\n                if (this.removeOnClose) {\n                    this.destroy();\n                } else {\n                    this.hide();\n                }\n            }\n        }.bind(this));\n    };\n\n    /**\n     * Set or resolve and set the value using the function.\n     *\n     * @method asyncSet\n     * @param {(string|object)} value The string or jQuery promise.\n     * @param {function} setFunction The setter\n     * @return {Promise}\n     */\n    Modal.prototype.asyncSet = function(value, setFunction) {\n        var p = value;\n        if (typeof value !== 'object' || !value.hasOwnProperty('then')) {\n            p = $.Deferred();\n            p.resolve(value);\n        }\n\n        p.then(function(content) {\n            setFunction(content);\n\n            return;\n        })\n        .fail(Notification.exception);\n\n        return p;\n    };\n\n    /**\n     * Set the title text of a button.\n     *\n     * This method is overloaded to take either a string value for the button title or a jQuery promise that is resolved with\n     * text most commonly from a Str.get_string call.\n     *\n     * @param {DOMString} action The action of the button\n     * @param {(String|object)} value The button text, or a promise which will resolve to it\n     * @returns {Promise}\n     */\n    Modal.prototype.setButtonText = function(action, value) {\n        const button = this.getFooter().find(this.getActionSelector(action));\n\n        if (!button) {\n            throw new Error(\"Unable to find the '\" + action + \"' button\");\n        }\n\n        return this.asyncSet(value, button.text.bind(button));\n    };\n\n    /**\n     * Get the Selector for an action.\n     *\n     * @param {String} action\n     * @returns {DOMString}\n     */\n    Modal.prototype.getActionSelector = function(action) {\n        return \"[data-action='\" + action + \"']\";\n    };\n\n    /**\n     * Set the flag to remove the modal from the DOM on close.\n     *\n     * @param {Boolean} remove\n     */\n    Modal.prototype.setRemoveOnClose = function(remove) {\n        this.removeOnClose = remove;\n    };\n\n    return Modal;\n});\n"],"file":"modal.min.js"}
\ No newline at end of file
diff --git a/lib/amd/src/modal.js b/lib/amd/src/modal.js
index 8a5840c1c35..7597112b431 100644
--- a/lib/amd/src/modal.js
+++ b/lib/amd/src/modal.js
@@ -456,7 +456,11 @@ define([
         // This is a non-spec feature of jQuery and cannot be produced with spec promises.
         // We can encourage people to migrate to this approach, and in future we can swap
         // it so that setBody() calls setBodyPromise().
-        return promise.then(({html, js}) => this.setBody($.when(html, js)));
+        return promise.then(({html, js}) => this.setBody($.when(html, js)))
+            .catch(exception => {
+                this.hide();
+                throw exception;
+            });
     };
 
     /**
diff --git a/lib/form/amd/build/modalform.min.js b/lib/form/amd/build/modalform.min.js
index 88b69d73d9a..1ce902f4650 100644
--- a/lib/form/amd/build/modalform.min.js
+++ b/lib/form/amd/build/modalform.min.js
@@ -1,2 +1,2 @@
-define ("core_form/modalform",["exports","core/modal_factory","core/modal_events","core/ajax","core/notification","core/yui","core/event","core/fragment","core/pending"],function(a,b,c,d,e,f,g,h,i){"use strict";Object.defineProperty(a,"__esModule",{value:!0});a.default=void 0;b=j(b);c=j(c);d=j(d);e=j(e);f=j(f);g=j(g);h=j(h);i=j(i);function j(a){return a&&a.__esModule?a:{default:a}}function k(a,b,c,d,e,f,g){try{var h=a[f](g),i=h.value}catch(a){c(a);return}if(h.done){b(i)}else{Promise.resolve(i).then(d,e)}}function l(a){return function(){var b=this,c=arguments;return new Promise(function(d,e){var h=a.apply(b,c);function f(a){k(h,d,e,f,g,"next",a)}function g(a){k(h,d,e,f,g,"throw",a)}f(void 0)})}}function m(a){return q(a)||p(a)||o(a)||n()}function n(){throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}function o(a,b){if(!a)return;if("string"==typeof a)return r(a,b);var c=Object.prototype.toString.call(a).slice(8,-1);if("Object"===c&&a.constructor)c=a.constructor.name;if("Map"===c||"Set"===c)return Array.from(c);if("Arguments"===c||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(c))return r(a,b)}function p(a){if("undefined"!=typeof Symbol&&Symbol.iterator in Object(a))return Array.from(a)}function q(a){if(Array.isArray(a))return r(a)}function r(a,b){if(null==b||b>a.length)b=a.length;for(var c=0,d=Array(b);c<b;c++){d[c]=a[c]}return d}function s(a,b){var c=Object.keys(a);if(Object.getOwnPropertySymbols){var d=Object.getOwnPropertySymbols(a);if(b)d=d.filter(function(b){return Object.getOwnPropertyDescriptor(a,b).enumerable});c.push.apply(c,d)}return c}function t(a){for(var b=1,c;b<arguments.length;b++){c=null!=arguments[b]?arguments[b]:{};if(b%2){s(Object(c),!0).forEach(function(b){x(a,b,c[b])})}else if(Object.getOwnPropertyDescriptors){Object.defineProperties(a,Object.getOwnPropertyDescriptors(c))}else{s(Object(c)).forEach(function(b){Object.defineProperty(a,b,Object.getOwnPropertyDescriptor(c,b))})}}return a}function u(a,b){if(!(a instanceof b)){throw new TypeError("Cannot call a class as a function")}}function v(a,b){for(var c=0,d;c<b.length;c++){d=b[c];d.enumerable=d.enumerable||!1;d.configurable=!0;if("value"in d)d.writable=!0;Object.defineProperty(a,d.key,d)}}function w(a,b,c){if(b)v(a.prototype,b);if(c)v(a,c);return a}function x(a,b,c){if(b in a){Object.defineProperty(a,b,{value:c,enumerable:!0,configurable:!0,writable:!0})}else{a[b]=c}return a}var y=function(){function a(c){u(this,a);x(this,"events",{FORM_SUBMITTED:"core_form_modalform_formsubmitted",FORM_CANCELLED:"core_form_modalform_formcancelled",CLIENT_VALIDATION_ERROR:"core_form_modalform_clientvalidationerror",SERVER_VALIDATION_ERROR:"core_form_modalform_validationerror",ERROR:"core_form_modalform_error",NOSUBMIT_BUTTON_PRESSED:"core_form_modalform_nosubmitbutton",SUBMIT_BUTTON_PRESSED:"core_form_modalform_submitbutton",CANCEL_BUTTON_PRESSED:"core_form_modalform_cancelbutton",LOADED:"core_form_modalform_loaded"});this.modal=null;this.config=c;this.config.modalConfig=t({removeOnClose:!0,type:b.default.types.SAVE_CANCEL,large:!0},this.config.modalConfig||{});this.config.args=this.config.args||{};this.futureListeners=[]}w(a,[{key:"show",value:function show(){var a=this,d=new i.default("core_form/modalform:init");return b.default.create(this.config.modalConfig).then(function(b){a.modal=b;var d=new URLSearchParams(Object.entries(a.config.args||{}));a.modal.setBodyContent(a.getBody(d.toString()));a.modal.getRoot().on(c.default.hidden,function(){a.notifyResetFormChanges().then(function(){a.modal.destroy();if(a.config.returnFocus){a.config.returnFocus.focus()}return null}).catch(function(){return null})});a.modal.getModal().addClass("modal-form-dialogue");a.modal.getRoot().on("click","form input[type=submit][data-no-submit]",function(b){b.preventDefault();var c=a.trigger(a.events.NOSUBMIT_BUTTON_PRESSED,b.target);if(!c.defaultPrevented){a.processNoSubmitButton(b.target)}});a.modal.getRoot().on("submit","form",function(b){b.preventDefault();var c=a.trigger(a.events.SUBMIT_BUTTON_PRESSED);if(!c.defaultPrevented){a.submitFormAjax()}});if("undefined"!=typeof a.config.saveButtonText&&"undefined"!=typeof a.modal.setSaveButtonText){a.modal.setSaveButtonText(a.config.saveButtonText)}if("undefined"!=typeof a.config.saveButtonClasses){a.setSaveButtonClasses(a.config.saveButtonClasses)}a.modal.getRoot().on(c.default.save,function(b){b.preventDefault();a.modal.getRoot().find("form").submit()});a.modal.getRoot().on(c.default.cancel,function(b){var c=a.trigger(a.events.CANCEL_BUTTON_PRESSED);if(c.defaultPrevented){b.preventDefault()}});a.futureListeners.forEach(function(b){var c;return(c=a.modal.getRoot()[0]).addEventListener.apply(c,m(b))});a.futureListeners=[];a.trigger(a.events.LOADED,null,!1);return a.modal.show()}).then(d.resolve)}},{key:"trigger",value:function trigger(a){var b=1<arguments.length&&arguments[1]!==void 0?arguments[1]:null,c=2<arguments.length&&arguments[2]!==void 0?arguments[2]:!0,d=new CustomEvent(a,{detail:b,cancelable:c});this.modal.getRoot()[0].dispatchEvent(d);return d}},{key:"addEventListener",value:function addEventListener(){for(var a=arguments.length,b=Array(a),c=0;c<a;c++){b[c]=arguments[c]}if(!this.modal){this.futureListeners.push(b)}else{var d;(d=this.modal.getRoot()[0]).addEventListener.apply(d,b)}}},{key:"getBody",value:function getBody(a){var b={formdata:a,form:this.config.formClass},c=new i.default("core_form/modalform:form_body");return d.default.call([{methodname:"core_form_dynamic_form",args:b}])[0].then(function(a){c.resolve();return{html:a.html,js:h.default.processCollectedJavascript(a.javascript)}})}},{key:"onSubmitError",value:function onSubmitError(a){var b=this.trigger(this.events.ERROR,a);if(b.defaultPrevented){return}e.default.exception(a)}},{key:"notifyResetFormChanges",value:function notifyResetFormChanges(){var a=this;return new Promise(function(b){f.default.use("event","moodle-core-event","moodle-core-formchangechecker",function(){g.default.notifyFormSubmitAjax(a.modal.getRoot().find("form")[0],!0);M.core_formchangechecker.reset_form_dirty_state();b()})})}},{key:"notifyFormSubmitAjax",value:function notifyFormSubmitAjax(){var a=this,b=0<arguments.length&&arguments[0]!==void 0?arguments[0]:!1;return new Promise(function(c){f.default.use("event","moodle-core-event","moodle-core-formchangechecker",function(){g.default.notifyFormSubmitAjax(a.modal.getRoot().find("form")[0],b);c()})})}},{key:"processNoSubmitButton",value:function processNoSubmitButton(a){var b=this;this.notifyFormSubmitAjax(!0).then(function(){var c=b.modal.getRoot().find("form").serialize();c=c+"&"+encodeURIComponent(a.getAttribute("name"))+"="+encodeURIComponent(a.getAttribute("value"));b.modal.setBodyContent(b.getBody(c));return null}).catch(null)}},{key:"validateElements",value:function validateElements(){var a=this;return this.notifyFormSubmitAjax().then(function(){var b=a.modal.getRoot().find("[aria-invalid=\"true\"], .error");if(b.length){b.first().focus();return!1}return!0})}},{key:"disableButtons",value:function disableButtons(){this.modal.getFooter().find("[data-action]").attr("disabled",!0)}},{key:"enableButtons",value:function enableButtons(){this.modal.getFooter().find("[data-action]").removeAttr("disabled")}},{key:"submitFormAjax",value:function(){var a=l(regeneratorRuntime.mark(function a(){var b=this,c;return regeneratorRuntime.wrap(function(a){while(1){switch(a.prev=a.next){case 0:a.next=2;return this.validateElements();case 2:if(a.sent){a.next=5;break}this.trigger(this.events.CLIENT_VALIDATION_ERROR,null,!1);return a.abrupt("return");case 5:this.disableButtons();c=this.modal.getRoot().find("form").serialize();d.default.call([{methodname:"core_form_dynamic_form",args:{formdata:c,form:this.config.formClass}}])[0].then(function(a){if(!a.submitted){var c=new Promise(function(b){return b({html:a.html,js:h.default.processCollectedJavascript(a.javascript)})});b.modal.setBodyContent(c);b.enableButtons();b.trigger(b.events.SERVER_VALIDATION_ERROR)}else{var d=JSON.parse(a.data);return b.notifyResetFormChanges().then(function(){var a=b.trigger(b.events.FORM_SUBMITTED,d);if(!a.defaultPrevented){b.modal.hide()}return null})}return null}).catch(this.onSubmitError);case 8:case"end":return a.stop();}}},a,this)}));return function submitFormAjax(){return a.apply(this,arguments)}}()},{key:"setSaveButtonClasses",value:function setSaveButtonClasses(a){var b=this.modal.getFooter().find("[data-action='save']");if(!b){throw new Error("Unable to find the 'save' button")}b.removeClass().addClass(a)}}]);return a}();a.default=y;return a.default});
+define ("core_form/modalform",["exports","core/modal_factory","core/modal_events","core/ajax","core/notification","core/yui","core/event","core/fragment","core/pending"],function(a,b,c,d,e,f,g,h,i){"use strict";Object.defineProperty(a,"__esModule",{value:!0});a.default=void 0;b=j(b);c=j(c);d=j(d);e=j(e);f=j(f);g=j(g);h=j(h);i=j(i);function j(a){return a&&a.__esModule?a:{default:a}}function k(a,b,c,d,e,f,g){try{var h=a[f](g),i=h.value}catch(a){c(a);return}if(h.done){b(i)}else{Promise.resolve(i).then(d,e)}}function l(a){return function(){var b=this,c=arguments;return new Promise(function(d,e){var h=a.apply(b,c);function f(a){k(h,d,e,f,g,"next",a)}function g(a){k(h,d,e,f,g,"throw",a)}f(void 0)})}}function m(a){return q(a)||p(a)||o(a)||n()}function n(){throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}function o(a,b){if(!a)return;if("string"==typeof a)return r(a,b);var c=Object.prototype.toString.call(a).slice(8,-1);if("Object"===c&&a.constructor)c=a.constructor.name;if("Map"===c||"Set"===c)return Array.from(c);if("Arguments"===c||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(c))return r(a,b)}function p(a){if("undefined"!=typeof Symbol&&Symbol.iterator in Object(a))return Array.from(a)}function q(a){if(Array.isArray(a))return r(a)}function r(a,b){if(null==b||b>a.length)b=a.length;for(var c=0,d=Array(b);c<b;c++){d[c]=a[c]}return d}function s(a,b){var c=Object.keys(a);if(Object.getOwnPropertySymbols){var d=Object.getOwnPropertySymbols(a);if(b)d=d.filter(function(b){return Object.getOwnPropertyDescriptor(a,b).enumerable});c.push.apply(c,d)}return c}function t(a){for(var b=1,c;b<arguments.length;b++){c=null!=arguments[b]?arguments[b]:{};if(b%2){s(Object(c),!0).forEach(function(b){x(a,b,c[b])})}else if(Object.getOwnPropertyDescriptors){Object.defineProperties(a,Object.getOwnPropertyDescriptors(c))}else{s(Object(c)).forEach(function(b){Object.defineProperty(a,b,Object.getOwnPropertyDescriptor(c,b))})}}return a}function u(a,b){if(!(a instanceof b)){throw new TypeError("Cannot call a class as a function")}}function v(a,b){for(var c=0,d;c<b.length;c++){d=b[c];d.enumerable=d.enumerable||!1;d.configurable=!0;if("value"in d)d.writable=!0;Object.defineProperty(a,d.key,d)}}function w(a,b,c){if(b)v(a.prototype,b);if(c)v(a,c);return a}function x(a,b,c){if(b in a){Object.defineProperty(a,b,{value:c,enumerable:!0,configurable:!0,writable:!0})}else{a[b]=c}return a}var y=function(){function a(c){u(this,a);x(this,"events",{FORM_SUBMITTED:"core_form_modalform_formsubmitted",FORM_CANCELLED:"core_form_modalform_formcancelled",CLIENT_VALIDATION_ERROR:"core_form_modalform_clientvalidationerror",SERVER_VALIDATION_ERROR:"core_form_modalform_validationerror",ERROR:"core_form_modalform_error",NOSUBMIT_BUTTON_PRESSED:"core_form_modalform_nosubmitbutton",SUBMIT_BUTTON_PRESSED:"core_form_modalform_submitbutton",CANCEL_BUTTON_PRESSED:"core_form_modalform_cancelbutton",LOADED:"core_form_modalform_loaded"});this.modal=null;this.config=c;this.config.modalConfig=t({removeOnClose:!0,type:b.default.types.SAVE_CANCEL,large:!0},this.config.modalConfig||{});this.config.args=this.config.args||{};this.futureListeners=[]}w(a,[{key:"show",value:function show(){var a=this,d=new i.default("core_form/modalform:init");return b.default.create(this.config.modalConfig).then(function(b){a.modal=b;var d=new URLSearchParams(Object.entries(a.config.args||{})),f=a.getBody(d.toString());a.modal.setBodyContent(f);f.catch(e.default.exception);a.modal.getRoot().on(c.default.hidden,function(){a.notifyResetFormChanges().then(function(){a.modal.destroy();if(a.config.returnFocus){a.config.returnFocus.focus()}return null}).catch(function(){return null})});a.modal.getModal().addClass("modal-form-dialogue");a.modal.getRoot().on("click","form input[type=submit][data-no-submit]",function(b){b.preventDefault();var c=a.trigger(a.events.NOSUBMIT_BUTTON_PRESSED,b.target);if(!c.defaultPrevented){a.processNoSubmitButton(b.target)}});a.modal.getRoot().on("submit","form",function(b){b.preventDefault();var c=a.trigger(a.events.SUBMIT_BUTTON_PRESSED);if(!c.defaultPrevented){a.submitFormAjax()}});if("undefined"!=typeof a.config.saveButtonText&&"undefined"!=typeof a.modal.setSaveButtonText){a.modal.setSaveButtonText(a.config.saveButtonText)}if("undefined"!=typeof a.config.saveButtonClasses){a.setSaveButtonClasses(a.config.saveButtonClasses)}a.modal.getRoot().on(c.default.save,function(b){b.preventDefault();a.modal.getRoot().find("form").submit()});a.modal.getRoot().on(c.default.cancel,function(b){var c=a.trigger(a.events.CANCEL_BUTTON_PRESSED);if(c.defaultPrevented){b.preventDefault()}});a.futureListeners.forEach(function(b){var c;return(c=a.modal.getRoot()[0]).addEventListener.apply(c,m(b))});a.futureListeners=[];a.trigger(a.events.LOADED,null,!1);return a.modal.show()}).then(d.resolve)}},{key:"trigger",value:function trigger(a){var b=1<arguments.length&&arguments[1]!==void 0?arguments[1]:null,c=2<arguments.length&&arguments[2]!==void 0?arguments[2]:!0,d=new CustomEvent(a,{detail:b,cancelable:c});this.modal.getRoot()[0].dispatchEvent(d);return d}},{key:"addEventListener",value:function addEventListener(){for(var a=arguments.length,b=Array(a),c=0;c<a;c++){b[c]=arguments[c]}if(!this.modal){this.futureListeners.push(b)}else{var d;(d=this.modal.getRoot()[0]).addEventListener.apply(d,b)}}},{key:"getBody",value:function getBody(a){var b={formdata:a,form:this.config.formClass},c=new i.default("core_form/modalform:form_body");return d.default.call([{methodname:"core_form_dynamic_form",args:b}])[0].then(function(a){c.resolve();return{html:a.html,js:h.default.processCollectedJavascript(a.javascript)}})}},{key:"onSubmitError",value:function onSubmitError(a){var b=this.trigger(this.events.ERROR,a);if(b.defaultPrevented){return}e.default.exception(a)}},{key:"notifyResetFormChanges",value:function notifyResetFormChanges(){var a=this;return new Promise(function(b){f.default.use("event","moodle-core-event","moodle-core-formchangechecker",function(){var c=a.modal.getRoot().find("form")[0];if(c){g.default.notifyFormSubmitAjax(c,!0);M.core_formchangechecker.reset_form_dirty_state()}b()})})}},{key:"notifyFormSubmitAjax",value:function notifyFormSubmitAjax(){var a=this,b=0<arguments.length&&arguments[0]!==void 0?arguments[0]:!1;return new Promise(function(c){f.default.use("event","moodle-core-event","moodle-core-formchangechecker",function(){g.default.notifyFormSubmitAjax(a.modal.getRoot().find("form")[0],b);c()})})}},{key:"processNoSubmitButton",value:function processNoSubmitButton(a){var b=this;this.notifyFormSubmitAjax(!0).then(function(){var c=b.modal.getRoot().find("form").serialize();c=c+"&"+encodeURIComponent(a.getAttribute("name"))+"="+encodeURIComponent(a.getAttribute("value"));var d=b.getBody(c);b.modal.setBodyContent(d);d.catch(e.default.exception);return null}).catch(null)}},{key:"validateElements",value:function validateElements(){var a=this;return this.notifyFormSubmitAjax().then(function(){var b=a.modal.getRoot().find("[aria-invalid=\"true\"], .error");if(b.length){b.first().focus();return!1}return!0})}},{key:"disableButtons",value:function disableButtons(){this.modal.getFooter().find("[data-action]").attr("disabled",!0)}},{key:"enableButtons",value:function enableButtons(){this.modal.getFooter().find("[data-action]").removeAttr("disabled")}},{key:"submitFormAjax",value:function(){var a=l(regeneratorRuntime.mark(function a(){var b=this,c;return regeneratorRuntime.wrap(function(a){while(1){switch(a.prev=a.next){case 0:a.next=2;return this.validateElements();case 2:if(a.sent){a.next=5;break}this.trigger(this.events.CLIENT_VALIDATION_ERROR,null,!1);return a.abrupt("return");case 5:this.disableButtons();c=this.modal.getRoot().find("form").serialize();d.default.call([{methodname:"core_form_dynamic_form",args:{formdata:c,form:this.config.formClass}}])[0].then(function(a){if(!a.submitted){var c=new Promise(function(b){return b({html:a.html,js:h.default.processCollectedJavascript(a.javascript)})});b.modal.setBodyContent(c);b.enableButtons();b.trigger(b.events.SERVER_VALIDATION_ERROR)}else{var d=JSON.parse(a.data);return b.notifyResetFormChanges().then(function(){var a=b.trigger(b.events.FORM_SUBMITTED,d);if(!a.defaultPrevented){b.modal.hide()}return null})}return null}).catch(this.onSubmitError);case 8:case"end":return a.stop();}}},a,this)}));return function submitFormAjax(){return a.apply(this,arguments)}}()},{key:"setSaveButtonClasses",value:function setSaveButtonClasses(a){var b=this.modal.getFooter().find("[data-action='save']");if(!b){throw new Error("Unable to find the 'save' button")}b.removeClass().addClass(a)}}]);return a}();a.default=y;return a.default});
 //# sourceMappingURL=modalform.min.js.map
diff --git a/lib/form/amd/build/modalform.min.js.map b/lib/form/amd/build/modalform.min.js.map
index 2a3ceb8fd87..511c4045596 100644
--- a/lib/form/amd/build/modalform.min.js.map
+++ b/lib/form/amd/build/modalform.min.js.map
@@ -1 +1 @@
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This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * Display a form in a modal dialogue\n *\n * Example:\n *    import ModalForm from 'core_form/modalform';\n *\n *    const modalForm = new ModalForm({\n *        formClass: 'pluginname\\\\form\\\\formname',\n *        modalConfig: {title: 'Here comes the title'},\n *        args: {categoryid: 123},\n *        returnFocus: e.target,\n *    });\n *    modalForm.addEventListener(modalForm.events.FORM_SUBMITTED, (c) => window.console.log(c.detail));\n *    modalForm.show();\n *\n * See also https://docs.moodle.org/dev/Modal_and_AJAX_forms\n *\n * @module     core_form/modalform\n * @package    core_form\n * @copyright  2018 Mitxel Moriana <mitxel@tresipunt.>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\n\nimport ModalFactory from 'core/modal_factory';\nimport ModalEvents from 'core/modal_events';\nimport Ajax from 'core/ajax';\nimport Notification from 'core/notification';\nimport Y from 'core/yui';\nimport Event from 'core/event';\nimport Fragment from 'core/fragment';\nimport Pending from 'core/pending';\n\nexport default class ModalForm {\n\n    /**\n     * Various events that can be observed.\n     *\n     * @type {Object}\n     */\n    events = {\n        // Form was successfully submitted - the response is passed to the event listener.\n        // Cancellable (but it's hardly ever needed to cancel this event).\n        FORM_SUBMITTED: 'core_form_modalform_formsubmitted',\n        // Cancel button was pressed.\n        // Cancellable (but it's hardly ever needed to cancel this event).\n        FORM_CANCELLED: 'core_form_modalform_formcancelled',\n        // User attempted to submit the form but there was client-side validation error.\n        CLIENT_VALIDATION_ERROR: 'core_form_modalform_clientvalidationerror',\n        // User attempted to submit the form but server returned validation error.\n        SERVER_VALIDATION_ERROR: 'core_form_modalform_validationerror',\n        // Error occurred while performing request to the server.\n        // Cancellable (by default calls Notification.exception).\n        ERROR: 'core_form_modalform_error',\n        // Right after user pressed no-submit button,\n        // listen to this event if you want to add JS validation or processing for no-submit button.\n        // Cancellable.\n        NOSUBMIT_BUTTON_PRESSED: 'core_form_modalform_nosubmitbutton',\n        // Right after user pressed submit button,\n        // listen to this event if you want to add additional JS validation or confirmation dialog.\n        // Cancellable.\n        SUBMIT_BUTTON_PRESSED: 'core_form_modalform_submitbutton',\n        // Right after user pressed cancel button,\n        // listen to this event if you want to add confirmation dialog.\n        // Cancellable.\n        CANCEL_BUTTON_PRESSED: 'core_form_modalform_cancelbutton',\n        // Modal was loaded and this.modal is available (but the form content may not be loaded yet).\n        LOADED: 'core_form_modalform_loaded',\n    };\n\n    /**\n     * Constructor\n     *\n     * Shows the required form inside a modal dialogue\n     *\n     * @param {Object} config parameters for the form and modal dialogue:\n     * @property {String} config.formClass PHP class name that handles the form (should extend \\core_form\\modal )\n     * @property {Object} config.modalConfig modal config - title, type, etc.\n     *              Default: {removeOnClose: true, type: ModalFactory.types.SAVE_CANCEL}\n     * @property {Object} config.args Arguments for the initial form rendering (for example, id of the edited entity)\n     * @property {String} config.saveButtonText the text to display on the Modal \"Save\" button (optional)\n     * @property {String} config.saveButtonClasses additional CSS classes for the Modal \"Save\" button\n     * @property {HTMLElement} config.returnFocus element to return focus to after the dialogue is closed\n     */\n    constructor(config) {\n        this.modal = null;\n        this.config = config;\n        this.config.modalConfig = {\n            removeOnClose: true,\n            type: ModalFactory.types.SAVE_CANCEL,\n            large: true,\n            ...(this.config.modalConfig || {}),\n        };\n        this.config.args = this.config.args || {};\n        this.futureListeners = [];\n    }\n\n    /**\n     * Initialise the modal and shows it\n     *\n     * @return {Promise}\n     */\n    show() {\n        const pendingPromise = new Pending('core_form/modalform:init');\n        return ModalFactory.create(this.config.modalConfig)\n        .then((modal) => {\n            this.modal = modal;\n\n            // Retrieve the form and set the modal body. We can not set the body in the modalConfig,\n            // we need to make sure that the modal already exists when we render the form. Some form elements\n            // such as date_selector inspect the existing elements on the page to find the highest z-index.\n            const formParams = new URLSearchParams(Object.entries(this.config.args || {}));\n            this.modal.setBodyContent(this.getBody(formParams.toString()));\n\n            // After successfull submit, when we press \"Cancel\" or close the dialogue by clicking on X in the top right corner.\n            this.modal.getRoot().on(ModalEvents.hidden, () => {\n                this.notifyResetFormChanges()\n                .then(() => {\n                    this.modal.destroy();\n                    // Focus on the element that actually launched the modal.\n                    if (this.config.returnFocus) {\n                        this.config.returnFocus.focus();\n                    }\n                    return null;\n                })\n                .catch(() => null);\n            });\n\n            // Add the class to the modal dialogue.\n            this.modal.getModal().addClass('modal-form-dialogue');\n\n            // We catch the press on submit buttons in the forms.\n            this.modal.getRoot().on('click', 'form input[type=submit][data-no-submit]',\n                (e) => {\n                    e.preventDefault();\n                    const event = this.trigger(this.events.NOSUBMIT_BUTTON_PRESSED, e.target);\n                    if (!event.defaultPrevented) {\n                        this.processNoSubmitButton(e.target);\n                    }\n                });\n\n            // We catch the form submit event and use it to submit the form with ajax.\n            this.modal.getRoot().on('submit', 'form', (e) => {\n                e.preventDefault();\n                const event = this.trigger(this.events.SUBMIT_BUTTON_PRESSED);\n                if (!event.defaultPrevented) {\n                    this.submitFormAjax();\n                }\n            });\n\n            // Change the text for the save button.\n            if (typeof this.config.saveButtonText !== 'undefined' &&\n                typeof this.modal.setSaveButtonText !== 'undefined') {\n                this.modal.setSaveButtonText(this.config.saveButtonText);\n            }\n            // Set classes for the save button.\n            if (typeof this.config.saveButtonClasses !== 'undefined') {\n                this.setSaveButtonClasses(this.config.saveButtonClasses);\n            }\n            // When Save button is pressed - submit the form.\n            this.modal.getRoot().on(ModalEvents.save, (e) => {\n                e.preventDefault();\n                this.modal.getRoot().find('form').submit();\n            });\n\n            // When Cancel button is pressed - allow to intercept.\n            this.modal.getRoot().on(ModalEvents.cancel, (e) => {\n                const event = this.trigger(this.events.CANCEL_BUTTON_PRESSED);\n                if (event.defaultPrevented) {\n                    e.preventDefault();\n                }\n            });\n            this.futureListeners.forEach(args => this.modal.getRoot()[0].addEventListener(...args));\n            this.futureListeners = [];\n            this.trigger(this.events.LOADED, null, false);\n            return this.modal.show();\n        })\n        .then(pendingPromise.resolve);\n    }\n\n    /**\n     * Triggers a custom event\n     *\n     * @private\n     * @param {String} eventName\n     * @param {*} detail\n     * @param {Boolean} cancelable\n     * @return {CustomEvent<unknown>}\n     */\n    trigger(eventName, detail = null, cancelable = true) {\n        const e = new CustomEvent(eventName, {detail, cancelable});\n        this.modal.getRoot()[0].dispatchEvent(e);\n        return e;\n    }\n\n    /**\n     * Add listener for an event\n     *\n     * Example:\n     *    const modalForm = new ModalForm(...);\n     *    dynamicForm.addEventListener(modalForm.events.FORM_SUBMITTED, e => {\n     *        window.console.log(e.detail);\n     *    });\n     */\n    addEventListener(...args) {\n        if (!this.modal) {\n            this.futureListeners.push(args);\n        } else {\n            this.modal.getRoot()[0].addEventListener(...args);\n        }\n    }\n\n    /**\n     * Get form contents (to be used in ModalForm.setBodyContent())\n     *\n     * @param {String} formDataString form data in format of a query string\n     * @method getBody\n     * @private\n     * @return {Promise}\n     */\n    getBody(formDataString) {\n        const params = {\n            formdata: formDataString,\n            form: this.config.formClass\n        };\n        const pendingPromise = new Pending('core_form/modalform:form_body');\n        return Ajax.call([{\n            methodname: 'core_form_dynamic_form',\n            args: params\n        }])[0]\n        .then(response => {\n            pendingPromise.resolve();\n            return {html: response.html, js: Fragment.processCollectedJavascript(response.javascript)};\n        });\n    }\n\n    /**\n     * On exception during form processing. Caller may override\n     *\n     * @param {Object} exception\n     */\n    onSubmitError(exception) {\n        const event = this.trigger(this.events.ERROR, exception);\n        if (event.defaultPrevented) {\n            return;\n        }\n\n        Notification.exception(exception);\n    }\n\n    /**\n     * Notifies listeners that form dirty state should be reset.\n     *\n     * @return {Promise<unknown>}\n     */\n    notifyResetFormChanges() {\n        return new Promise(resolve => {\n            Y.use('event', 'moodle-core-event', 'moodle-core-formchangechecker', () => {\n                Event.notifyFormSubmitAjax(this.modal.getRoot().find('form')[0], true);\n                M.core_formchangechecker.reset_form_dirty_state();\n                resolve();\n            });\n        });\n    }\n\n    /**\n     * Wrapper for Event.notifyFormSubmitAjax that waits for the module to load\n     *\n     * We often destroy the form right after calling this function and we need to make sure that it actually\n     * completes before it, or otherwise it will try to work with a form that does not exist.\n     *\n     * @param {Boolean} skipValidation\n     * @return {Promise}\n     */\n    notifyFormSubmitAjax(skipValidation = false) {\n        return new Promise(resolve => {\n            Y.use('event', 'moodle-core-event', 'moodle-core-formchangechecker', () => {\n                Event.notifyFormSubmitAjax(this.modal.getRoot().find('form')[0], skipValidation);\n                resolve();\n            });\n        });\n    }\n\n    /**\n     * Click on a \"submit\" button that is marked in the form as registerNoSubmitButton()\n     *\n     * @param {Element} button button that was pressed\n     */\n    processNoSubmitButton(button) {\n        this.notifyFormSubmitAjax(true)\n        .then(() => {\n            // Add the button name to the form data and submit it.\n            let formData = this.modal.getRoot().find('form').serialize();\n            formData = formData + '&' + encodeURIComponent(button.getAttribute('name')) + '=' +\n                encodeURIComponent(button.getAttribute('value'));\n            this.modal.setBodyContent(this.getBody(formData));\n            return null;\n        })\n        .catch(null);\n    }\n\n    /**\n     * Validate form elements\n     * @return {Promise} promise that returns true if client-side validation has passed, false if there are errors\n     */\n    validateElements() {\n        return this.notifyFormSubmitAjax()\n        .then(() => {\n            // Now the change events have run, see if there are any \"invalid\" form fields.\n            /** @var {jQuery} list of elements with errors */\n            const invalid = this.modal.getRoot().find('[aria-invalid=\"true\"], .error');\n\n            // If we found invalid fields, focus on the first one and do not submit via ajax.\n            if (invalid.length) {\n                invalid.first().focus();\n                return false;\n            }\n\n            return true;\n        });\n    }\n\n    /**\n     * Disable buttons during form submission\n     */\n    disableButtons() {\n        this.modal.getFooter().find('[data-action]').attr('disabled', true);\n    }\n\n    /**\n     * Enable buttons after form submission (on validation error)\n     */\n    enableButtons() {\n        this.modal.getFooter().find('[data-action]').removeAttr('disabled');\n    }\n\n    /**\n     * Submit the form via AJAX call to the core_form_dynamic_form WS\n     */\n    async submitFormAjax() {\n        // If we found invalid fields, focus on the first one and do not submit via ajax.\n        if (!await this.validateElements()) {\n            this.trigger(this.events.CLIENT_VALIDATION_ERROR, null, false);\n            return;\n        }\n        this.disableButtons();\n\n        // Convert all the form elements values to a serialised string.\n        const formData = this.modal.getRoot().find('form').serialize();\n\n        // Now we can continue...\n        Ajax.call([{\n            methodname: 'core_form_dynamic_form',\n            args: {\n                formdata: formData,\n                form: this.config.formClass\n            }\n        }])[0]\n        .then((response) => {\n            if (!response.submitted) {\n                // Form was not submitted because validation failed.\n                const promise = new Promise(\n                    resolve => resolve({html: response.html, js: Fragment.processCollectedJavascript(response.javascript)}));\n                this.modal.setBodyContent(promise);\n                this.enableButtons();\n                this.trigger(this.events.SERVER_VALIDATION_ERROR);\n            } else {\n                // Form was submitted properly. Hide the modal and execute callback.\n                const data = JSON.parse(response.data);\n                return this.notifyResetFormChanges()\n                .then(() => {\n                    const event = this.trigger(this.events.FORM_SUBMITTED, data);\n                    if (!event.defaultPrevented) {\n                        this.modal.hide();\n                    }\n                    return null;\n                });\n            }\n            return null;\n        })\n        .catch(this.onSubmitError);\n    }\n\n    /**\n     * Set the classes for the 'save' button.\n     *\n     * @method setSaveButtonClasses\n     * @param {(String)} value The 'save' button classes.\n     */\n    setSaveButtonClasses(value) {\n        const button = this.modal.getFooter().find(\"[data-action='save']\");\n        if (!button) {\n            throw new Error(\"Unable to find the 'save' button\");\n        }\n        button.removeClass().addClass(value);\n    }\n}\n"],"file":"modalform.min.js"}
\ No newline at end of file
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This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * Display a form in a modal dialogue\n *\n * Example:\n *    import ModalForm from 'core_form/modalform';\n *\n *    const modalForm = new ModalForm({\n *        formClass: 'pluginname\\\\form\\\\formname',\n *        modalConfig: {title: 'Here comes the title'},\n *        args: {categoryid: 123},\n *        returnFocus: e.target,\n *    });\n *    modalForm.addEventListener(modalForm.events.FORM_SUBMITTED, (c) => window.console.log(c.detail));\n *    modalForm.show();\n *\n * See also https://docs.moodle.org/dev/Modal_and_AJAX_forms\n *\n * @module     core_form/modalform\n * @package    core_form\n * @copyright  2018 Mitxel Moriana <mitxel@tresipunt.>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\n\nimport ModalFactory from 'core/modal_factory';\nimport ModalEvents from 'core/modal_events';\nimport Ajax from 'core/ajax';\nimport Notification from 'core/notification';\nimport Y from 'core/yui';\nimport Event from 'core/event';\nimport Fragment from 'core/fragment';\nimport Pending from 'core/pending';\n\nexport default class ModalForm {\n\n    /**\n     * Various events that can be observed.\n     *\n     * @type {Object}\n     */\n    events = {\n        // Form was successfully submitted - the response is passed to the event listener.\n        // Cancellable (but it's hardly ever needed to cancel this event).\n        FORM_SUBMITTED: 'core_form_modalform_formsubmitted',\n        // Cancel button was pressed.\n        // Cancellable (but it's hardly ever needed to cancel this event).\n        FORM_CANCELLED: 'core_form_modalform_formcancelled',\n        // User attempted to submit the form but there was client-side validation error.\n        CLIENT_VALIDATION_ERROR: 'core_form_modalform_clientvalidationerror',\n        // User attempted to submit the form but server returned validation error.\n        SERVER_VALIDATION_ERROR: 'core_form_modalform_validationerror',\n        // Error occurred while performing request to the server.\n        // Cancellable (by default calls Notification.exception).\n        ERROR: 'core_form_modalform_error',\n        // Right after user pressed no-submit button,\n        // listen to this event if you want to add JS validation or processing for no-submit button.\n        // Cancellable.\n        NOSUBMIT_BUTTON_PRESSED: 'core_form_modalform_nosubmitbutton',\n        // Right after user pressed submit button,\n        // listen to this event if you want to add additional JS validation or confirmation dialog.\n        // Cancellable.\n        SUBMIT_BUTTON_PRESSED: 'core_form_modalform_submitbutton',\n        // Right after user pressed cancel button,\n        // listen to this event if you want to add confirmation dialog.\n        // Cancellable.\n        CANCEL_BUTTON_PRESSED: 'core_form_modalform_cancelbutton',\n        // Modal was loaded and this.modal is available (but the form content may not be loaded yet).\n        LOADED: 'core_form_modalform_loaded',\n    };\n\n    /**\n     * Constructor\n     *\n     * Shows the required form inside a modal dialogue\n     *\n     * @param {Object} config parameters for the form and modal dialogue:\n     * @property {String} config.formClass PHP class name that handles the form (should extend \\core_form\\modal )\n     * @property {Object} config.modalConfig modal config - title, type, etc.\n     *              Default: {removeOnClose: true, type: ModalFactory.types.SAVE_CANCEL}\n     * @property {Object} config.args Arguments for the initial form rendering (for example, id of the edited entity)\n     * @property {String} config.saveButtonText the text to display on the Modal \"Save\" button (optional)\n     * @property {String} config.saveButtonClasses additional CSS classes for the Modal \"Save\" button\n     * @property {HTMLElement} config.returnFocus element to return focus to after the dialogue is closed\n     */\n    constructor(config) {\n        this.modal = null;\n        this.config = config;\n        this.config.modalConfig = {\n            removeOnClose: true,\n            type: ModalFactory.types.SAVE_CANCEL,\n            large: true,\n            ...(this.config.modalConfig || {}),\n        };\n        this.config.args = this.config.args || {};\n        this.futureListeners = [];\n    }\n\n    /**\n     * Initialise the modal and shows it\n     *\n     * @return {Promise}\n     */\n    show() {\n        const pendingPromise = new Pending('core_form/modalform:init');\n        return ModalFactory.create(this.config.modalConfig)\n        .then((modal) => {\n            this.modal = modal;\n\n            // Retrieve the form and set the modal body. We can not set the body in the modalConfig,\n            // we need to make sure that the modal already exists when we render the form. Some form elements\n            // such as date_selector inspect the existing elements on the page to find the highest z-index.\n            const formParams = new URLSearchParams(Object.entries(this.config.args || {}));\n            const bodyContent = this.getBody(formParams.toString());\n            this.modal.setBodyContent(bodyContent);\n            bodyContent.catch(Notification.exception);\n\n            // After successfull submit, when we press \"Cancel\" or close the dialogue by clicking on X in the top right corner.\n            this.modal.getRoot().on(ModalEvents.hidden, () => {\n                this.notifyResetFormChanges()\n                .then(() => {\n                    this.modal.destroy();\n                    // Focus on the element that actually launched the modal.\n                    if (this.config.returnFocus) {\n                        this.config.returnFocus.focus();\n                    }\n                    return null;\n                })\n                .catch(() => null);\n            });\n\n            // Add the class to the modal dialogue.\n            this.modal.getModal().addClass('modal-form-dialogue');\n\n            // We catch the press on submit buttons in the forms.\n            this.modal.getRoot().on('click', 'form input[type=submit][data-no-submit]',\n                (e) => {\n                    e.preventDefault();\n                    const event = this.trigger(this.events.NOSUBMIT_BUTTON_PRESSED, e.target);\n                    if (!event.defaultPrevented) {\n                        this.processNoSubmitButton(e.target);\n                    }\n                });\n\n            // We catch the form submit event and use it to submit the form with ajax.\n            this.modal.getRoot().on('submit', 'form', (e) => {\n                e.preventDefault();\n                const event = this.trigger(this.events.SUBMIT_BUTTON_PRESSED);\n                if (!event.defaultPrevented) {\n                    this.submitFormAjax();\n                }\n            });\n\n            // Change the text for the save button.\n            if (typeof this.config.saveButtonText !== 'undefined' &&\n                typeof this.modal.setSaveButtonText !== 'undefined') {\n                this.modal.setSaveButtonText(this.config.saveButtonText);\n            }\n            // Set classes for the save button.\n            if (typeof this.config.saveButtonClasses !== 'undefined') {\n                this.setSaveButtonClasses(this.config.saveButtonClasses);\n            }\n            // When Save button is pressed - submit the form.\n            this.modal.getRoot().on(ModalEvents.save, (e) => {\n                e.preventDefault();\n                this.modal.getRoot().find('form').submit();\n            });\n\n            // When Cancel button is pressed - allow to intercept.\n            this.modal.getRoot().on(ModalEvents.cancel, (e) => {\n                const event = this.trigger(this.events.CANCEL_BUTTON_PRESSED);\n                if (event.defaultPrevented) {\n                    e.preventDefault();\n                }\n            });\n            this.futureListeners.forEach(args => this.modal.getRoot()[0].addEventListener(...args));\n            this.futureListeners = [];\n            this.trigger(this.events.LOADED, null, false);\n            return this.modal.show();\n        })\n        .then(pendingPromise.resolve);\n    }\n\n    /**\n     * Triggers a custom event\n     *\n     * @private\n     * @param {String} eventName\n     * @param {*} detail\n     * @param {Boolean} cancelable\n     * @return {CustomEvent<unknown>}\n     */\n    trigger(eventName, detail = null, cancelable = true) {\n        const e = new CustomEvent(eventName, {detail, cancelable});\n        this.modal.getRoot()[0].dispatchEvent(e);\n        return e;\n    }\n\n    /**\n     * Add listener for an event\n     *\n     * Example:\n     *    const modalForm = new ModalForm(...);\n     *    dynamicForm.addEventListener(modalForm.events.FORM_SUBMITTED, e => {\n     *        window.console.log(e.detail);\n     *    });\n     */\n    addEventListener(...args) {\n        if (!this.modal) {\n            this.futureListeners.push(args);\n        } else {\n            this.modal.getRoot()[0].addEventListener(...args);\n        }\n    }\n\n    /**\n     * Get form contents (to be used in ModalForm.setBodyContent())\n     *\n     * @param {String} formDataString form data in format of a query string\n     * @method getBody\n     * @private\n     * @return {Promise}\n     */\n    getBody(formDataString) {\n        const params = {\n            formdata: formDataString,\n            form: this.config.formClass\n        };\n        const pendingPromise = new Pending('core_form/modalform:form_body');\n        return Ajax.call([{\n            methodname: 'core_form_dynamic_form',\n            args: params\n        }])[0]\n        .then(response => {\n            pendingPromise.resolve();\n            return {html: response.html, js: Fragment.processCollectedJavascript(response.javascript)};\n        });\n    }\n\n    /**\n     * On exception during form processing. Caller may override\n     *\n     * @param {Object} exception\n     */\n    onSubmitError(exception) {\n        const event = this.trigger(this.events.ERROR, exception);\n        if (event.defaultPrevented) {\n            return;\n        }\n\n        Notification.exception(exception);\n    }\n\n    /**\n     * Notifies listeners that form dirty state should be reset.\n     *\n     * @return {Promise<unknown>}\n     */\n    notifyResetFormChanges() {\n        return new Promise(resolve => {\n            Y.use('event', 'moodle-core-event', 'moodle-core-formchangechecker', () => {\n                // Ensure that modal contains a form element (it may not if the form class threw an early exception).\n                const form = this.modal.getRoot().find('form')[0];\n                if (form) {\n                    Event.notifyFormSubmitAjax(form, true);\n                    M.core_formchangechecker.reset_form_dirty_state();\n                }\n                resolve();\n            });\n        });\n    }\n\n    /**\n     * Wrapper for Event.notifyFormSubmitAjax that waits for the module to load\n     *\n     * We often destroy the form right after calling this function and we need to make sure that it actually\n     * completes before it, or otherwise it will try to work with a form that does not exist.\n     *\n     * @param {Boolean} skipValidation\n     * @return {Promise}\n     */\n    notifyFormSubmitAjax(skipValidation = false) {\n        return new Promise(resolve => {\n            Y.use('event', 'moodle-core-event', 'moodle-core-formchangechecker', () => {\n                Event.notifyFormSubmitAjax(this.modal.getRoot().find('form')[0], skipValidation);\n                resolve();\n            });\n        });\n    }\n\n    /**\n     * Click on a \"submit\" button that is marked in the form as registerNoSubmitButton()\n     *\n     * @param {Element} button button that was pressed\n     */\n    processNoSubmitButton(button) {\n        this.notifyFormSubmitAjax(true)\n        .then(() => {\n            // Add the button name to the form data and submit it.\n            let formData = this.modal.getRoot().find('form').serialize();\n            formData = formData + '&' + encodeURIComponent(button.getAttribute('name')) + '=' +\n                encodeURIComponent(button.getAttribute('value'));\n\n            const bodyContent = this.getBody(formData);\n            this.modal.setBodyContent(bodyContent);\n            bodyContent.catch(Notification.exception);\n\n            return null;\n        })\n        .catch(null);\n    }\n\n    /**\n     * Validate form elements\n     * @return {Promise} promise that returns true if client-side validation has passed, false if there are errors\n     */\n    validateElements() {\n        return this.notifyFormSubmitAjax()\n        .then(() => {\n            // Now the change events have run, see if there are any \"invalid\" form fields.\n            /** @var {jQuery} list of elements with errors */\n            const invalid = this.modal.getRoot().find('[aria-invalid=\"true\"], .error');\n\n            // If we found invalid fields, focus on the first one and do not submit via ajax.\n            if (invalid.length) {\n                invalid.first().focus();\n                return false;\n            }\n\n            return true;\n        });\n    }\n\n    /**\n     * Disable buttons during form submission\n     */\n    disableButtons() {\n        this.modal.getFooter().find('[data-action]').attr('disabled', true);\n    }\n\n    /**\n     * Enable buttons after form submission (on validation error)\n     */\n    enableButtons() {\n        this.modal.getFooter().find('[data-action]').removeAttr('disabled');\n    }\n\n    /**\n     * Submit the form via AJAX call to the core_form_dynamic_form WS\n     */\n    async submitFormAjax() {\n        // If we found invalid fields, focus on the first one and do not submit via ajax.\n        if (!await this.validateElements()) {\n            this.trigger(this.events.CLIENT_VALIDATION_ERROR, null, false);\n            return;\n        }\n        this.disableButtons();\n\n        // Convert all the form elements values to a serialised string.\n        const formData = this.modal.getRoot().find('form').serialize();\n\n        // Now we can continue...\n        Ajax.call([{\n            methodname: 'core_form_dynamic_form',\n            args: {\n                formdata: formData,\n                form: this.config.formClass\n            }\n        }])[0]\n        .then((response) => {\n            if (!response.submitted) {\n                // Form was not submitted because validation failed.\n                const promise = new Promise(\n                    resolve => resolve({html: response.html, js: Fragment.processCollectedJavascript(response.javascript)}));\n                this.modal.setBodyContent(promise);\n                this.enableButtons();\n                this.trigger(this.events.SERVER_VALIDATION_ERROR);\n            } else {\n                // Form was submitted properly. Hide the modal and execute callback.\n                const data = JSON.parse(response.data);\n                return this.notifyResetFormChanges()\n                .then(() => {\n                    const event = this.trigger(this.events.FORM_SUBMITTED, data);\n                    if (!event.defaultPrevented) {\n                        this.modal.hide();\n                    }\n                    return null;\n                });\n            }\n            return null;\n        })\n        .catch(this.onSubmitError);\n    }\n\n    /**\n     * Set the classes for the 'save' button.\n     *\n     * @method setSaveButtonClasses\n     * @param {(String)} value The 'save' button classes.\n     */\n    setSaveButtonClasses(value) {\n        const button = this.modal.getFooter().find(\"[data-action='save']\");\n        if (!button) {\n            throw new Error(\"Unable to find the 'save' button\");\n        }\n        button.removeClass().addClass(value);\n    }\n}\n"],"file":"modalform.min.js"}
\ No newline at end of file
diff --git a/lib/form/amd/src/modalform.js b/lib/form/amd/src/modalform.js
index 285a37aab1d..98f57f41832 100644
--- a/lib/form/amd/src/modalform.js
+++ b/lib/form/amd/src/modalform.js
@@ -124,7 +124,9 @@ export default class ModalForm {
             // we need to make sure that the modal already exists when we render the form. Some form elements
             // such as date_selector inspect the existing elements on the page to find the highest z-index.
             const formParams = new URLSearchParams(Object.entries(this.config.args || {}));
-            this.modal.setBodyContent(this.getBody(formParams.toString()));
+            const bodyContent = this.getBody(formParams.toString());
+            this.modal.setBodyContent(bodyContent);
+            bodyContent.catch(Notification.exception);
 
             // After successfull submit, when we press "Cancel" or close the dialogue by clicking on X in the top right corner.
             this.modal.getRoot().on(ModalEvents.hidden, () => {
@@ -270,8 +272,12 @@ export default class ModalForm {
     notifyResetFormChanges() {
         return new Promise(resolve => {
             Y.use('event', 'moodle-core-event', 'moodle-core-formchangechecker', () => {
-                Event.notifyFormSubmitAjax(this.modal.getRoot().find('form')[0], true);
-                M.core_formchangechecker.reset_form_dirty_state();
+                // Ensure that modal contains a form element (it may not if the form class threw an early exception).
+                const form = this.modal.getRoot().find('form')[0];
+                if (form) {
+                    Event.notifyFormSubmitAjax(form, true);
+                    M.core_formchangechecker.reset_form_dirty_state();
+                }
                 resolve();
             });
         });
@@ -307,7 +313,11 @@ export default class ModalForm {
             let formData = this.modal.getRoot().find('form').serialize();
             formData = formData + '&' + encodeURIComponent(button.getAttribute('name')) + '=' +
                 encodeURIComponent(button.getAttribute('value'));
-            this.modal.setBodyContent(this.getBody(formData));
+
+            const bodyContent = this.getBody(formData);
+            this.modal.setBodyContent(bodyContent);
+            bodyContent.catch(Notification.exception);
+
             return null;
         })
         .catch(null);