diff --git a/lib/amd/build/event.min.js b/lib/amd/build/event.min.js
index 86a64079679..39b9bb55084 100644
--- a/lib/amd/build/event.min.js
+++ b/lib/amd/build/event.min.js
@@ -1 +1 @@
-define(["jquery","core/yui"],function(a,b){return{notifyFilterContentUpdated:function(c){c=a(c),b.use("event","moodle-core-event",function(b){a("document").trigger(M.core.event.FILTER_CONTENT_UPDATED,c);var d=new b.NodeList(c.get());b.fire(M.core.event.FILTER_CONTENT_UPDATED,{nodes:d})})}}});
\ No newline at end of file
+define(["jquery","core/yui"],function(a,b){return{notifyFilterContentUpdated:function(c){c=a(c),b.use("event","moodle-core-event",function(b){a(document).trigger(M.core.event.FILTER_CONTENT_UPDATED,c);var d=new b.NodeList(c.get());b.fire(M.core.event.FILTER_CONTENT_UPDATED,{nodes:d})})},notifyEditorContentRestored:function(){b.use("event","moodle-core-event",function(b){a(document).trigger(M.core.event.EDITOR_CONTENT_RESTORED),b.fire(M.core.event.EDITOR_CONTENT_RESTORED)})}}});
\ No newline at end of file
diff --git a/lib/amd/src/event.js b/lib/amd/src/event.js
index b43c704d3af..0923668316a 100644
--- a/lib/amd/src/event.js
+++ b/lib/amd/src/event.js
@@ -38,7 +38,7 @@ define(['jquery', 'core/yui'],
             nodes = $(nodes);
             Y.use('event', 'moodle-core-event', function(Y) {
                 // Trigger it the JQuery way.
-                $('document').trigger(M.core.event.FILTER_CONTENT_UPDATED, nodes);
+                $(document).trigger(M.core.event.FILTER_CONTENT_UPDATED, nodes);
 
                 // Create a YUI NodeList from our JQuery Object.
                 var yuiNodes = new Y.NodeList(nodes.get());
@@ -47,6 +47,20 @@ define(['jquery', 'core/yui'],
                 Y.fire(M.core.event.FILTER_CONTENT_UPDATED, {nodes: yuiNodes});
             });
         },
+        /**
+         * Trigger an event using both JQuery and YUI
+         * This event alerts the world that the editor has restored some content.
+         *
+         * @method notifyEditorContentRestored
+         */
+        notifyEditorContentRestored: function() {
+            Y.use('event', 'moodle-core-event', function(Y) {
+                // Trigger it the JQuery way.
+                $(document).trigger(M.core.event.EDITOR_CONTENT_RESTORED);
 
+                // And again for YUI.
+                Y.fire(M.core.event.EDITOR_CONTENT_RESTORED);
+            });
+        },
     };
 });
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js
index 33207091420..542e5097432 100644
--- a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js
@@ -930,6 +930,11 @@ EditorAutosave.prototype = {
         this.showMessage(M.util.get_string('textrecovered', 'editor_atto'),
                 NOTIFY_INFO, RECOVER_MESSAGE_TIMEOUT);
 
+        // Fire an event that the editor content has changed.
+        require(['core/event'], function(event) {
+            event.notifyEditorContentRestored();
+        });
+
         return this;
     },
 
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js
index 4a4d0519b76..dd5848908f5 100644
--- a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js
@@ -1,4 +1,4 @@
 YUI.add("moodle-editor_atto-editor",function(e,t){function s(){s.superclass.constructor.apply(this,arguments)}function f(){}function l(){}function d(){}function m(){m.superclass.constructor.apply(this,arguments),this._submitEvents={},this._queue=[],this._throttle=null}function g(){}function y(){}function b(){}function w(){}function E(){}function S(){}function x(){}function T(){}var n="moodle-editor_atto-editor",r={CONTENT:"editor_atto_content",CONTENTWRAPPER:"editor_atto_content_wrap",TOOLBAR:"editor_atto_toolbar",WRAPPER:"editor_atto",HIGHLIGHT:"highlight"},i=window.rangy;e.extend(s,e.Base,{BLOCK_TAGS:["address","article","aside","audio","blockquote","canvas","dd","div","dl","fieldset","figcaption","figure","footer","form","h1","h2","h3","h4","h5","h6","header","hgroup","hr","noscript","ol","output","p","pre","section","table","tfoot","ul","video"],PLACEHOLDER_CLASS:"atto-tmp-class",ALL_NODES_SELECTOR:"[style],font[face]",FONT_FAMILY:"fontFamily",_wrapper:null,editor:null,textarea:null,textareaLabel:null,plugins:null,_eventHandles:null,initializer:function(){var t;this.textarea=e.one(document.getElementById(this.get("elementid")));if(!this.textarea)return;this._eventHandles=[],this._wrapper=e.Node.create('<div class="'+r.WRAPPER+'" />'),t=e.Handlebars.compile('<div id="{{elementid}}editable" contenteditable="true" role="textbox" spellcheck="true" aria-live="off" class="{{CSS.CONTENT}}" />'),this.editor=e.Node.create(t({elementid:this.get("elementid"),CSS:r})),this.textareaLabel=e.one('[for="'+this.get("elementid")+'"]'),this.textareaLabel&&(this.textareaLabel.generateID(),this.editor.setAttribute("aria-labelledby",this.textareaLabel.get("id"))),this.setupToolbar();var n=e.Node.create('<div class="'+r.CONTENTWRAPPER+'" />');n.appendChild(this.editor),this._wrapper.appendChild(n),this.editor.setStyle("minHeight",20*this.textarea.getAttribute("rows")+8+"px"),e.UA.ie===0&&this.editor.setStyle("height",20*this.textarea.getAttribute("rows")+8+"px"),this.disableCssStyling(),document.queryCommandSupported("DefaultParagraphSeparator")&&document.execCommand("DefaultParagraphSeparator",!1,"p"),this.textarea.get("parentNode").insert(this._wrapper,this.textarea).setAttribute("class","editor_atto_wrap"),this.textarea.hide(),this.updateFromTextArea(),this.publishEvents(),this.setupSelectionWatchers(),this.setupAutomaticPolling(),this.setupPlugins(),this.setupAutosave(),this.setupNotifications()},focus:function(){return this.editor.focus(),this},publishEvents:function(){return this.publish("change",{broadcast:!0,preventable:!0}),this.publish("pluginsloaded",{fireOnce:!0}),this.publish("atto:selectionchanged",{prefix:"atto"}),this},setupAutomaticPolling:function(){return this._registerEventHandle(this.editor.on(["keyup","cut"],this.updateOriginal,this)),this._registerEventHandle(this.editor.on("paste",this.pasteCleanup,this)),this._registerEventHandle(this.editor.on("drop",this.updateOriginalDelayed,this)),this},updateOriginalDelayed:function(){return e.soon(e.bind(this.updateOriginal,this)),this},setupPlugins:function(){this.plugins={};var t=this.get("plugins"),n,r,i,s,o;for(n in t){r=t[n];if(!r.plugins)continue;for(i in r.plugins){s=r.plugins[i],o=e.mix({name:s.name,group:r.group,editor:this.editor,toolbar:this.toolbar,host:this},s);if(typeof e.M["atto_"+s.name]=="undefined")continue;this.plugins[s.name]=new e.M["atto_"+s.name].Button(o)}}return this.fire("pluginsloaded"),this},enablePlugins:function(e){this._setPluginState(!0,e)},disablePlugins:function(e){this._setPluginState(!1,e)},_setPluginState:function(t,n){var r="disableButtons";t&&(r="enableButtons"),n?this.plugins[n][r]():e.Object.each(this.plugins,function(e){e[r]()},this)},_registerEventHandle:function(e){this._eventHandles.push(e)}},{NS:"editor_atto",ATTRS:{elementid:{value:null,writeOnce:!0},contextid:{value:null,writeOnce:!0},plugins:{value:{},writeOnce:!0}}}),e.augment(s,e.EventTarget),e.namespace("M.editor_atto").Editor=s,e.namespace("M.editor_atto.Editor").init=function(t){return new e.M.editor_atto.Editor(t)};var o="moodle-editor_atto-editor-notify",u="info",a="warning";f.ATTRS={},f.prototype={messageOverlay:null,hideTimer:null,setupNotifications:function(){var e=new Image,t=new Image;return e.src=M.util.image_url("i/warning","moodle"),t.src=M.util.image_url("i/info","moodle"),this},showMessage:function(t,n,r){var i="",s,o;return this.messageOverlay===null&&(this.messageOverlay=e.Node.create('<div class="editor_atto_notification"></div>'),this.messageOverlay.hide(!0),this.textarea.get("parentNode").append(this.messageOverlay),this.messageOverlay.on("click",function(){this.messageOverlay.hide(!0)},this)),this.hideTimer!==null&&this.hideTimer.cancel(),n===a?i='<img src="'+M.util.image_url("i/warning","moodle")+'" alt="'+M.util.get_string("warning","moodle")+'"/>':n===u&&(i='<img src="'+M.util.image_url("i/info","moodle")+'" alt="'+M.util.get_string("info","moodle")+'"/>'),s=parseInt(r,10),s<=0&&(s=6e4),n="atto_"+n,o=e.Node.create('<div class="'+n+'" role="alert" aria-live="assertive">'+i+" "+e.Escape.html(t)+"</div>"),this.messageOverlay.empty(),this.messageOverlay.append(o),this.messageOverlay.show(!0),this.hideTimer=e.later(s,this,function(){this.hideTimer=null,this.messageOverlay.inDoc()&&this.messageOverlay.hide(!0)}),this}},e.Base.mix(e.M.editor_atto.Editor,[f]),l.ATTRS={},l.prototype={_getEmptyContent:function(){return e.UA.ie&&e.UA.ie<10?"<p></p>":"<p><br></p>"},updateFromTextArea:function(){return this.editor.setHTML(""),this.editor.append(this._cleanHTML(this.textarea.get("value"))),this.editor.getHTML()===""&&this.editor.setHTML(this._getEmptyContent()),this},updateOriginal:function(){var e=this.textarea.get("value"),t=this.getCleanHTML();return t===""&&this.isActive()&&(t=this._getEmptyContent()),e!==t&&(this.textarea.set("value",t),this.textarea.simulate("change"),this.fire("change")),this}},e.Base.mix(e.M.editor_atto.Editor,[l]);var c=5e3,h=6e4,p="moodle-editor_atto-editor-autosave";d.ATTRS={autosaveEnabled:{value:!0,writeOnce
-:!0},autosaveFrequency:{value:60,writeOnce:!0},pageHash:{value:"",writeOnce:!0}},d.prototype={lastText:"",autosaveInstance:null,autosaveTimer:null,setupAutosave:function(){var t=-1,n,r=null,i=this.get("filepickeroptions"),s;if(!this.get("autosaveEnabled"))return;this.autosaveInstance=e.stamp(this);for(r in i)typeof i[r].itemid!="undefined"&&(t=i[r].itemid);s={contextid:this.get("contextid"),action:"resume",draftid:t,elementid:this.get("elementid"),pageinstance:this.autosaveInstance,pagehash:this.get("pageHash")},this.autosaveIo(s,this,{success:function(e){if(e===null)return;if(!e)return;if(e.result==="<p></p>"||e.result==="<p><br></p>"||e.result==="<br>")e.result="";if(e.result==="<p>&nbsp;</p>"||e.result==="<p><br>&nbsp;</p>")e.result="";e.error||typeof e.result=="undefined"?this.showMessage(M.util.get_string("errortextrecovery","editor_atto"),a,h):e.result!==this.textarea.get("value")&&e.result!==""&&this.recoverText(e.result),this._fireSelectionChanged()},failure:function(){this.showMessage(M.util.get_string("errortextrecovery","editor_atto"),a,h)}});var o=parseInt(this.get("autosaveFrequency"),10)*1e3;return this.autosaveTimer=e.later(o,this,this.saveDraft,!1,!0),n=this.textarea.ancestor("form"),n&&this.autosaveIoOnSubmit(n,{action:"reset",contextid:this.get("contextid"),elementid:this.get("elementid"),pageinstance:this.autosaveInstance,pagehash:this.get("pageHash")}),this},recoverText:function(e){return this.editor.setHTML(e),this.saveSelection(),this.updateOriginal(),this.lastText=e,this.showMessage(M.util.get_string("textrecovered","editor_atto"),u,h),this},saveDraft:function(){var t,n;if(!this.editor.getDOMNode()){this.autosaveTimer.cancel();return}this.editor.get("hidden")||this.updateOriginal();var r=this.textarea.get("value");if(r!==this.lastText){t=M.cfg.wwwroot+this.get("autosaveAjaxScript"),n={sesskey:M.cfg.sesskey,contextid:this.get("contextid"),action:"save",drafttext:r,elementid:this.get("elementid"),pagehash:this.get("pageHash"),pageinstance:this.autosaveInstance};var i=function(e){var t=parseInt(this.get("autosaveFrequency"),10)*1e3;this.showMessage(M.util.get_string("autosavefailed","editor_atto"),a,t)};this.autosaveIo(n,this,{failure:i,success:function(t){t&&t.error?e.soon(e.bind(i,this,[t])):(this.lastText=r,this.showMessage(M.util.get_string("autosavesucceeded","editor_atto"),u,c))}})}return this}},e.Base.mix(e.M.editor_atto.Editor,[d]);var v=null;m.NAME="EditorAutosaveIoDispatcher",m.ATTRS={autosaveAjaxScript:{value:"/lib/editor/atto/autosave-ajax.php",readOnly:!0},delay:{value:50,readOnly:!0}},e.extend(m,e.Base,{dispatch:function(t,n,r){this._throttle&&this._throttle.cancel(),this._throttle=e.later(this.get("delay"),this,this._processDispatchQueue),this._queue.push([t,n,r])},_processDispatchQueue:function(){var t=this._queue,n={};this._queue=[];if(t.length<1)return;e.Array.each(t,function(e,t){n[t]=e[0]}),e.io(M.cfg.wwwroot+this.get("autosaveAjaxScript"),{method:"POST",data:e.QueryString.stringify({actions:n,sesskey:M.cfg.sesskey}),on:{start:this._makeIoEventCallback("start",t),complete:this._makeIoEventCallback("complete",t),failure:this._makeIoEventCallback("failure",t),end:this._makeIoEventCallback("end",t),success:this._makeIoEventCallback("success",t)}})},_makeIoEventCallback:function(t,n){var r=function(){};return function(){var i=arguments[1],s={};(t=="complete"||t=="success")&&typeof i!="undefined"&&typeof i.responseText!="undefined"&&i.responseText!==""&&(s=JSON.parse(i.responseText)||{}),e.Array.each(n,function(e,n){var i=e[1],o=e[2]&&e[2][t]||r,u;s&&s.error?u=s:s&&(u=s[n]),o.apply(i,[u])})}},_onSubmit:function(t){var n={},r=t.currentTarget.generateID(),i=this._submitEvents[r];if(!i||i.ios.length<1)return;e.Array.each(i.ios,function(e,t){n[t]=e}),e.io(M.cfg.wwwroot+this.get("autosaveAjaxScript"),{method:"POST",data:e.QueryString.stringify({actions:n,sesskey:M.cfg.sesskey}),sync:!0})},whenSubmit:function(e,t){typeof this._submitEvents[e.generateID()]=="undefined"&&(this._submitEvents[e.generateID()]={event:e.on("submit",this._onSubmit,this),ios:[]}),this._submitEvents[e.get("id")].ios.push([t])}}),v=new m,g.prototype={autosaveIo:function(e,t,n){v.dispatch(e,t,n)},autosaveIoOnSubmit:function(e,t){v.whenSubmit(e,t)}},e.Base.mix(e.M.editor_atto.Editor,[g]),y.ATTRS={},y.prototype={getCleanHTML:function(){var t=this.editor.cloneNode(!0),n;return e.each(t.all('[id^="yui"]'),function(e){e.removeAttribute("id")}),t.all(".atto_control").remove(!0),n=t.get("innerHTML"),n==="<p></p>"||n==="<p><br></p>"?"":this._cleanHTML(n)},cleanEditorHTML:function(){var e=this.editor.get("innerHTML");return this.editor.set("innerHTML",this._cleanHTML(e)),this},_cleanHTML:function(e){var t=[{regex:/<style[^>]*>[\s\S]*?<\/style>/gi,replace:""},{regex:/<!--(?![\s\S]*?-->)/gi,replace:""},{regex:/<\/?(?:title|meta|style|st\d|head|font|html|body|link)[^>]*?>/gi,replace:""}];return this._filterContentWithRules(e,t)},_filterContentWithRules:function(e,t){var n=0;for(n=0;n<t.length;n++)e=e.replace(t[n].regex,t[n].replace);return e},pasteCleanup:function(e){if(e.type==="paste"){var t=e._event;if(t&&t.clipboardData&&t.clipboardData.getData&&t.clipboardData.types){var n=t.clipboardData.types,r=!1;typeof n.contains=="function"?r=n.contains("text/html"):typeof n.indexOf=="function"&&(r=n.indexOf("text/html")>-1);if(r){var i;try{i=t.clipboardData.getData("text/html")}catch(s){return this.fallbackPasteCleanupDelayed(),!0}e.preventDefault(),i=this._cleanPasteHTML(i);var o=window.rangy.saveSelection();return this.insertContentAtFocusPoint(i),window.rangy.restoreSelection(o),window.rangy.getSelection().collapseToEnd(),this.updateOriginal(),!1}return this.fallbackPasteCleanupDelayed(),!0}return this.fallbackPasteCleanupDelayed(),!0}return this.updateOriginalDelayed(),!0},fallbackPasteCleanup:function(){var e=window.rangy.saveSelection(),t=this.editor.get("innerHTML");return this.editor.set("innerHTML",this._cleanPasteHTML(t)),this.updateOriginal(),window.rangy.restoreSelection(e),this},fallbackPasteCleanupDelayed
-:function(){return e.soon(e.bind(this.fallbackPasteCleanup,this)),this},_cleanPasteHTML:function(e){if(!e||e.length===0)return"";var t=[{regex:/<\s*\/html\s*>([\s\S]+)$/gi,replace:""},{regex:/<!--\[if[\s\S]*?endif\]-->/gi,replace:""},{regex:/<!--(Start|End)Fragment-->/gi,replace:""},{regex:/<xml[^>]*>[\s\S]*?<\/xml>/gi,replace:""},{regex:/<\?xml[^>]*>[\s\S]*?<\\\?xml>/gi,replace:""},{regex:/<\/?\w+:[^>]*>/gi,replace:""}];e=this._filterContentWithRules(e,t),e=this._cleanHTML(e);if(e.length===0||!e.match(/\S/))return e;var n=document.createElement("div");return n.innerHTML=e,e=n.innerHTML,n.innerHTML="",t=[{regex:/(<[^>]*?class\s*?=\s*?")([^>"]*)(")/gi,replace:function(e,t,n,r){return n=n.replace(/(?:^|[\s])[\s]*MSO[_a-zA-Z0-9\-]*/gi,""),n=n.replace(/(?:^|[\s])[\s]*Apple-[_a-zA-Z0-9\-]*/gi,""),t+n+r}},{regex:/<a [^>]*?name\s*?=\s*?"OLE_LINK\d*?"[^>]*?>\s*?<\/a>/gi,replace:""}],e=this._cleanStyles(e),e=this._filterContentWithRules(e,t),e=this._cleanHTML(e),e=this._cleanSpans(e),e},_cleanStyles:function(e){var t=document.createElement("div");t.innerHTML=e;var n=t.querySelectorAll("[style]"),r=0;for(r=0;r<n.length;r++)n[r].removeAttribute("style");var i=t.querySelectorAll("[class]");for(r=0;r<i.length;r++)i[r].removeAttribute("class");return t.innerHTML},_cleanSpans:function(e){if(!e||e.length===0)return"";if(e.length===0||!e.match(/\S/))return e;var t=[{regex:/(<[^>]*?)(?:[\s]*(?:class|style|id)\s*?=\s*?"\s*?")+/gi,replace:"$1"}];e=this._filterContentWithRules(e,t);var n=document.createElement("div");n.innerHTML=e;var r=n.getElementsByTagName("span"),i=Array.prototype.slice.call(r,0);return i.forEach(function(e){if(!e.hasAttributes()){while(e.firstChild)e.parentNode.insertBefore(e.firstChild,e);e.parentNode.removeChild(e)}}),n.innerHTML}},e.Base.mix(e.M.editor_atto.Editor,[y]),b.ATTRS={},b.prototype={applyFormat:function(t,n,r,i){function s(t,n,r,i,s,o){e.soon(e.bind(function(e,t,n,r,i,s){var o=window.rangy.getSelection(),u=o.getRangeAt(0);u.setStart(i,s),o.setSingleRange(u),t.apply(n,[e,r]),o.collapseToEnd(),this.saveSelection(),this.updateOriginal()},this,t,n,r,i,s,o))}r=r||this;var o=window.rangy.getSelection();if(o.isCollapsed){var u=this.editor.once("input",s,this,n,r,i,o.anchorNode,o.anchorOffset);this.editor.onceAfter(["click","selectstart"],u.detach,u);return}n.apply(r,[t,i]),this.saveSelection(),this.updateOriginal()},replaceTags:function(t,n){t.setAttribute("data-iterate",!0);var r=this.editor.one('[data-iterate="true"]');while(r){var i=e.Node.create("<"+n+" />").setAttrs(r.getAttrs()).removeAttribute("data-iterate");r.getAttribute("style")&&i.setAttribute("style",r.getAttribute("style")),r.getAttribute("class")&&i.setAttribute("class",r.getAttribute("class"));var s=r.getDOMNode().childNodes,o;o=s[0];while(typeof o!="undefined")i.append(o),o=s[0];r.replace(i),r=this.editor.one('[data-iterate="true"]')}},changeToCSS:function(e,t){var n=window.rangy.saveSelection();this.editor.all(".rangySelectionBoundary").setStyle("display",null),this.editor.all(e).addClass(t),this.replaceTags(this.editor.all("."+t),"span"),window.rangy.restoreSelection(n)},changeToTags:function(e,t){var n=window.rangy.saveSelection();this.editor.all(".rangySelectionBoundary").setStyle("display",null),this.replaceTags(this.editor.all('span[class="'+e+'"]'),t),this.editor.all(t+'[class="'+e+'"]').removeAttribute("class"),this.editor.all("."+e).each(function(n){n.wrap("<"+t+"/>"),n.removeClass(e)}),this.editor.all('[class="'+e+'"]').removeAttribute("class"),this.editor.all(t).removeClass(e),window.rangy.restoreSelection(n)}},e.Base.mix(e.M.editor_atto.Editor,[b]),w.ATTRS={},w.prototype={toolbar:null,openMenus:null,setupToolbar:function(){return this.toolbar=e.Node.create('<div class="'+r.TOOLBAR+'" role="toolbar" aria-live="off"/>'),this.openMenus=[],this._wrapper.appendChild(this.toolbar),this.textareaLabel&&this.toolbar.setAttribute("aria-labelledby",this.textareaLabel.get("id")),this.setupToolbarNavigation(),this}},e.Base.mix(e.M.editor_atto.Editor,[w]),E.ATTRS={},E.prototype={_tabFocus:null,setupToolbarNavigation:function(){return this._wrapper.delegate("key",this.toolbarKeyboardNavigation,"down:37,39","."+r.TOOLBAR,this),this._wrapper.delegate("focus",function(e){this._setTabFocus(e.currentTarget)},"."+r.TOOLBAR+" button",this),this},toolbarKeyboardNavigation:function(e){e.preventDefault();var t=this.toolbar.all("button"),n=1,r,i=e.target.ancestor("button",!0);e.keyCode===37&&(n=-1),r=this._findFirstFocusable(t,i,n),r&&(r.focus(),this._setTabFocus(r))},_findFirstFocusable:function(e,t,n){var r=0,i,s,o,u;u=e.indexOf(t),u<-1&&(u=0);while(r<e.size()){u+=n,u<0?u=e.size()-1:u>=e.size()&&(u=0),s=e.item(u),r++;if(s.hasAttribute("hidden")||s.hasAttribute("disabled"))continue;i=s.ancestor(".atto_group");if(i.hasAttribute("hidden"))continue;o=s;break}return o},checkTabFocus:function(){if(this._tabFocus)if(this._tabFocus.hasAttribute("disabled")||this._tabFocus.hasAttribute("hidden")||this._tabFocus.ancestor(".atto_group").hasAttribute("hidden")){var e=this._findFirstFocusable(this.toolbar.all("button"),this._tabFocus,-1);e&&(this._tabFocus.compareTo(document.activeElement)&&e.focus(),this._setTabFocus(e))}return this},_setTabFocus:function(e){return this._tabFocus&&this._tabFocus.setAttribute("tabindex","-1"),this._tabFocus=e,this._tabFocus.setAttribute("tabindex",0),this.toolbar.setAttribute("aria-activedescendant",this._tabFocus.generateID()),this}},e.Base.mix(e.M.editor_atto.Editor,[E]),S.ATTRS={},S.prototype={_selections:null,_lastSelection:null,_focusFromClick:!1,_gesturestartededitor:!1,setupSelectionWatchers:function(){return this.on("atto:selectionchanged",this.saveSelection,this),this.editor.on("focus",this.restoreSelection,this),this.editor.on("mousedown",function(){this._focusFromClick=!0},this),this.editor.on("blur",function(){this._focusFromClick=!1,this.updateOriginal()},this),this.editor.on(["keyup","focus"],function(t){e.soon(e.bind(this._hasSelectionChanged,this,t))},this),e.one(document.body).on("gesturemovestart"
-,function(e){this._wrapper.contains(e.target._node)?this._gesturestartededitor=!0:this._gesturestartededitor=!1},null,this),e.one(document.body).on("gesturemoveend",function(t){if(!this._gesturestartededitor)return;e.soon(e.bind(this._hasSelectionChanged,this,t))},{standAlone:!0},this),this},isActive:function(){var e=i.createRange(),t=i.getSelection();return t.rangeCount?!document.activeElement||!this.editor.compareTo(document.activeElement)&&!this.editor.contains(document.activeElement)?!1:(e.selectNode(this.editor.getDOMNode()),e.intersectsRange(t.getRangeAt(0))):!1},getSelectionFromNode:function(e){var t=i.createRange();return t.selectNode(e.getDOMNode()),[t]},saveSelection:function(){this.isActive()&&(this._selections=this.getSelection())},restoreSelection:function(){this._focusFromClick||this._selections&&this.setSelection(this._selections),this._focusFromClick=!1},getSelection:function(){return i.getSelection().getAllRanges()},selectionContainsNode:function(e){return i.getSelection().containsNode(e.getDOMNode(),!0)},selectionFilterMatches:function(e,t,n){typeof n=="undefined"&&(n=!0),t||(t=this.getSelectedNodes());var r=t.size()>0,i=!1,s=this.editor,o=function(e){return e===s};return s.one(e)?(t.each(function(t){if(n){if(!r||!t.ancestor(e,!0,o))r=!1}else!i&&t.ancestor(e,!0,o)&&(i=!0)},this),n?r:i):!1},getSelectedNodes:function(){var t=new e.NodeList,n,r,s,o,u;r=i.getSelection(),r.rangeCount?s=r.getRangeAt(0):s=i.createRange(),s.collapsed&&s.commonAncestorContainer!==this.editor.getDOMNode()&&s.commonAncestorContainer!==e.config.doc&&(s=s.cloneRange(),s.selectNode(s.commonAncestorContainer)),n=s.getNodes();for(u=0;u<n.length;u++)o=e.one(n[u]),this.editor.contains(o)&&t.push(o);return t},_hasSelectionChanged:function(e){var t=i.getSelection(),n,r=!1;return t.rangeCount?n=t.getRangeAt(0):n=i.createRange(),this._lastSelection&&!this._lastSelection.equals(n)?(r=!0,this._fireSelectionChanged(e)):(this._lastSelection=n,r)},_fireSelectionChanged:function(e){this.fire("atto:selectionchanged",{event:e,selectedNodes:this.getSelectedNodes()})},getSelectionParentNode:function(){var e=i.getSelection();return e.rangeCount?e.getRangeAt(0).commonAncestorContainer:!1},setSelection:function(e){var t=i.getSelection();t.setRanges(e)},insertContentAtFocusPoint:function(t){var n=i.getSelection(),r,s=e.Node.create(t);return n.rangeCount&&(r=n.getRangeAt(0)),r&&(r.deleteContents(),r.insertNode(s.getDOMNode())),s}},e.Base.mix(e.M.editor_atto.Editor,[S]),x.ATTRS={},x.prototype={disableCssStyling:function(){try{document.execCommand("styleWithCSS",0,!1)}catch(e){try{document.execCommand("useCSS",0,!0)}catch(t){try{document.execCommand("styleWithCSS",!1,!1)}catch(n){}}}},enableCssStyling:function(){try{document.execCommand("styleWithCSS",0,!0)}catch(e){try{document.execCommand("useCSS",0,!1)}catch(t){try{document.execCommand("styleWithCSS",!1,!0)}catch(n){}}}},toggleInlineSelectionClass:function(e){var t=e.join(" "),n=i.createClassApplier(t,{normalize:!0});n.toggleSelection()},formatSelectionInlineStyle:function(e){var t=this.PLACEHOLDER_CLASS,n=i.createClassApplier(t,{normalize:!0});n.applyToSelection(),this.editor.all("."+t).each(function(n){n.removeClass(t).setStyles(e)},this)},formatSelectionBlock:function(t,n){var r=this.getSelectionParentNode(),i,s,o,u,a,f;if(!r)return!1;i=this.editor,r=e.one(r),s=r.ancestor(function(e){var t=e.get("tagName");return t&&(t=t.toLowerCase()),e===i||t==="td"||t==="th"},!0),s&&(i=s),o=r.ancestor(this.BLOCK_TAGS.join(", "),!0),o&&(a=o.ancestor(function(e){return e===i},!1),a||(o=!1)),o||(u=e.Node.create("<p></p>"),i.get("childNodes").each(function(e){u.append(e.remove())}),i.append(u),o=u),t&&t!==""&&(f=e.Node.create("<"+t+"></"+t+">"),f.setAttrs(o.getAttrs()),o.get("childNodes").each(function(e){e.remove(),f.append(e)}),o.replace(f),o=f),n&&o.setAttrs(n);var l=this.getSelectionFromNode(o);return this.setSelection(l),o}},e.Base.mix(e.M.editor_atto.Editor,[x]),T.ATTRS={filepickeroptions:{value:{}}},T.prototype={canShowFilepicker:function(e){return typeof this.get("filepickeroptions")[e]!="undefined"},showFilepicker:function(t,n,r){var i=this;e.use("core_filepicker",function(e){var s=e.clone(i.get("filepickeroptions")[t],!0);s.formcallback=n,r&&(s.magicscope=r),M.core_filepicker.show(e,s)})}},e.Base.mix(e.M.editor_atto.Editor,[T])},"@VERSION@",{requires:["node","transition","io","overlay","escape","event","event-simulate","event-custom","node-event-html5","yui-throttle","moodle-core-notification-dialogue","moodle-core-notification-confirm","moodle-editor_atto-rangy","handlebars","timers","querystring-stringify"]});
+:!0},autosaveFrequency:{value:60,writeOnce:!0},pageHash:{value:"",writeOnce:!0}},d.prototype={lastText:"",autosaveInstance:null,autosaveTimer:null,setupAutosave:function(){var t=-1,n,r=null,i=this.get("filepickeroptions"),s;if(!this.get("autosaveEnabled"))return;this.autosaveInstance=e.stamp(this);for(r in i)typeof i[r].itemid!="undefined"&&(t=i[r].itemid);s={contextid:this.get("contextid"),action:"resume",draftid:t,elementid:this.get("elementid"),pageinstance:this.autosaveInstance,pagehash:this.get("pageHash")},this.autosaveIo(s,this,{success:function(e){if(e===null)return;if(!e)return;if(e.result==="<p></p>"||e.result==="<p><br></p>"||e.result==="<br>")e.result="";if(e.result==="<p>&nbsp;</p>"||e.result==="<p><br>&nbsp;</p>")e.result="";e.error||typeof e.result=="undefined"?this.showMessage(M.util.get_string("errortextrecovery","editor_atto"),a,h):e.result!==this.textarea.get("value")&&e.result!==""&&this.recoverText(e.result),this._fireSelectionChanged()},failure:function(){this.showMessage(M.util.get_string("errortextrecovery","editor_atto"),a,h)}});var o=parseInt(this.get("autosaveFrequency"),10)*1e3;return this.autosaveTimer=e.later(o,this,this.saveDraft,!1,!0),n=this.textarea.ancestor("form"),n&&this.autosaveIoOnSubmit(n,{action:"reset",contextid:this.get("contextid"),elementid:this.get("elementid"),pageinstance:this.autosaveInstance,pagehash:this.get("pageHash")}),this},recoverText:function(e){return this.editor.setHTML(e),this.saveSelection(),this.updateOriginal(),this.lastText=e,this.showMessage(M.util.get_string("textrecovered","editor_atto"),u,h),require(["core/event"],function(e){e.notifyEditorContentRestored()}),this},saveDraft:function(){var t,n;if(!this.editor.getDOMNode()){this.autosaveTimer.cancel();return}this.editor.get("hidden")||this.updateOriginal();var r=this.textarea.get("value");if(r!==this.lastText){t=M.cfg.wwwroot+this.get("autosaveAjaxScript"),n={sesskey:M.cfg.sesskey,contextid:this.get("contextid"),action:"save",drafttext:r,elementid:this.get("elementid"),pagehash:this.get("pageHash"),pageinstance:this.autosaveInstance};var i=function(e){var t=parseInt(this.get("autosaveFrequency"),10)*1e3;this.showMessage(M.util.get_string("autosavefailed","editor_atto"),a,t)};this.autosaveIo(n,this,{failure:i,success:function(t){t&&t.error?e.soon(e.bind(i,this,[t])):(this.lastText=r,this.showMessage(M.util.get_string("autosavesucceeded","editor_atto"),u,c))}})}return this}},e.Base.mix(e.M.editor_atto.Editor,[d]);var v=null;m.NAME="EditorAutosaveIoDispatcher",m.ATTRS={autosaveAjaxScript:{value:"/lib/editor/atto/autosave-ajax.php",readOnly:!0},delay:{value:50,readOnly:!0}},e.extend(m,e.Base,{dispatch:function(t,n,r){this._throttle&&this._throttle.cancel(),this._throttle=e.later(this.get("delay"),this,this._processDispatchQueue),this._queue.push([t,n,r])},_processDispatchQueue:function(){var t=this._queue,n={};this._queue=[];if(t.length<1)return;e.Array.each(t,function(e,t){n[t]=e[0]}),e.io(M.cfg.wwwroot+this.get("autosaveAjaxScript"),{method:"POST",data:e.QueryString.stringify({actions:n,sesskey:M.cfg.sesskey}),on:{start:this._makeIoEventCallback("start",t),complete:this._makeIoEventCallback("complete",t),failure:this._makeIoEventCallback("failure",t),end:this._makeIoEventCallback("end",t),success:this._makeIoEventCallback("success",t)}})},_makeIoEventCallback:function(t,n){var r=function(){};return function(){var i=arguments[1],s={};(t=="complete"||t=="success")&&typeof i!="undefined"&&typeof i.responseText!="undefined"&&i.responseText!==""&&(s=JSON.parse(i.responseText)||{}),e.Array.each(n,function(e,n){var i=e[1],o=e[2]&&e[2][t]||r,u;s&&s.error?u=s:s&&(u=s[n]),o.apply(i,[u])})}},_onSubmit:function(t){var n={},r=t.currentTarget.generateID(),i=this._submitEvents[r];if(!i||i.ios.length<1)return;e.Array.each(i.ios,function(e,t){n[t]=e}),e.io(M.cfg.wwwroot+this.get("autosaveAjaxScript"),{method:"POST",data:e.QueryString.stringify({actions:n,sesskey:M.cfg.sesskey}),sync:!0})},whenSubmit:function(e,t){typeof this._submitEvents[e.generateID()]=="undefined"&&(this._submitEvents[e.generateID()]={event:e.on("submit",this._onSubmit,this),ios:[]}),this._submitEvents[e.get("id")].ios.push([t])}}),v=new m,g.prototype={autosaveIo:function(e,t,n){v.dispatch(e,t,n)},autosaveIoOnSubmit:function(e,t){v.whenSubmit(e,t)}},e.Base.mix(e.M.editor_atto.Editor,[g]),y.ATTRS={},y.prototype={getCleanHTML:function(){var t=this.editor.cloneNode(!0),n;return e.each(t.all('[id^="yui"]'),function(e){e.removeAttribute("id")}),t.all(".atto_control").remove(!0),n=t.get("innerHTML"),n==="<p></p>"||n==="<p><br></p>"?"":this._cleanHTML(n)},cleanEditorHTML:function(){var e=this.editor.get("innerHTML");return this.editor.set("innerHTML",this._cleanHTML(e)),this},_cleanHTML:function(e){var t=[{regex:/<style[^>]*>[\s\S]*?<\/style>/gi,replace:""},{regex:/<!--(?![\s\S]*?-->)/gi,replace:""},{regex:/<\/?(?:title|meta|style|st\d|head|font|html|body|link)[^>]*?>/gi,replace:""}];return this._filterContentWithRules(e,t)},_filterContentWithRules:function(e,t){var n=0;for(n=0;n<t.length;n++)e=e.replace(t[n].regex,t[n].replace);return e},pasteCleanup:function(e){if(e.type==="paste"){var t=e._event;if(t&&t.clipboardData&&t.clipboardData.getData&&t.clipboardData.types){var n=t.clipboardData.types,r=!1;typeof n.contains=="function"?r=n.contains("text/html"):typeof n.indexOf=="function"&&(r=n.indexOf("text/html")>-1);if(r){var i;try{i=t.clipboardData.getData("text/html")}catch(s){return this.fallbackPasteCleanupDelayed(),!0}e.preventDefault(),i=this._cleanPasteHTML(i);var o=window.rangy.saveSelection();return this.insertContentAtFocusPoint(i),window.rangy.restoreSelection(o),window.rangy.getSelection().collapseToEnd(),this.updateOriginal(),!1}return this.fallbackPasteCleanupDelayed(),!0}return this.fallbackPasteCleanupDelayed(),!0}return this.updateOriginalDelayed(),!0},fallbackPasteCleanup:function(){var e=window.rangy.saveSelection(),t=this.editor.get("innerHTML");return this.editor.set("innerHTML",this._cleanPasteHTML(t)),this.updateOriginal
+(),window.rangy.restoreSelection(e),this},fallbackPasteCleanupDelayed:function(){return e.soon(e.bind(this.fallbackPasteCleanup,this)),this},_cleanPasteHTML:function(e){if(!e||e.length===0)return"";var t=[{regex:/<\s*\/html\s*>([\s\S]+)$/gi,replace:""},{regex:/<!--\[if[\s\S]*?endif\]-->/gi,replace:""},{regex:/<!--(Start|End)Fragment-->/gi,replace:""},{regex:/<xml[^>]*>[\s\S]*?<\/xml>/gi,replace:""},{regex:/<\?xml[^>]*>[\s\S]*?<\\\?xml>/gi,replace:""},{regex:/<\/?\w+:[^>]*>/gi,replace:""}];e=this._filterContentWithRules(e,t),e=this._cleanHTML(e);if(e.length===0||!e.match(/\S/))return e;var n=document.createElement("div");return n.innerHTML=e,e=n.innerHTML,n.innerHTML="",t=[{regex:/(<[^>]*?class\s*?=\s*?")([^>"]*)(")/gi,replace:function(e,t,n,r){return n=n.replace(/(?:^|[\s])[\s]*MSO[_a-zA-Z0-9\-]*/gi,""),n=n.replace(/(?:^|[\s])[\s]*Apple-[_a-zA-Z0-9\-]*/gi,""),t+n+r}},{regex:/<a [^>]*?name\s*?=\s*?"OLE_LINK\d*?"[^>]*?>\s*?<\/a>/gi,replace:""}],e=this._cleanStyles(e),e=this._filterContentWithRules(e,t),e=this._cleanHTML(e),e=this._cleanSpans(e),e},_cleanStyles:function(e){var t=document.createElement("div");t.innerHTML=e;var n=t.querySelectorAll("[style]"),r=0;for(r=0;r<n.length;r++)n[r].removeAttribute("style");var i=t.querySelectorAll("[class]");for(r=0;r<i.length;r++)i[r].removeAttribute("class");return t.innerHTML},_cleanSpans:function(e){if(!e||e.length===0)return"";if(e.length===0||!e.match(/\S/))return e;var t=[{regex:/(<[^>]*?)(?:[\s]*(?:class|style|id)\s*?=\s*?"\s*?")+/gi,replace:"$1"}];e=this._filterContentWithRules(e,t);var n=document.createElement("div");n.innerHTML=e;var r=n.getElementsByTagName("span"),i=Array.prototype.slice.call(r,0);return i.forEach(function(e){if(!e.hasAttributes()){while(e.firstChild)e.parentNode.insertBefore(e.firstChild,e);e.parentNode.removeChild(e)}}),n.innerHTML}},e.Base.mix(e.M.editor_atto.Editor,[y]),b.ATTRS={},b.prototype={applyFormat:function(t,n,r,i){function s(t,n,r,i,s,o){e.soon(e.bind(function(e,t,n,r,i,s){var o=window.rangy.getSelection(),u=o.getRangeAt(0);u.setStart(i,s),o.setSingleRange(u),t.apply(n,[e,r]),o.collapseToEnd(),this.saveSelection(),this.updateOriginal()},this,t,n,r,i,s,o))}r=r||this;var o=window.rangy.getSelection();if(o.isCollapsed){var u=this.editor.once("input",s,this,n,r,i,o.anchorNode,o.anchorOffset);this.editor.onceAfter(["click","selectstart"],u.detach,u);return}n.apply(r,[t,i]),this.saveSelection(),this.updateOriginal()},replaceTags:function(t,n){t.setAttribute("data-iterate",!0);var r=this.editor.one('[data-iterate="true"]');while(r){var i=e.Node.create("<"+n+" />").setAttrs(r.getAttrs()).removeAttribute("data-iterate");r.getAttribute("style")&&i.setAttribute("style",r.getAttribute("style")),r.getAttribute("class")&&i.setAttribute("class",r.getAttribute("class"));var s=r.getDOMNode().childNodes,o;o=s[0];while(typeof o!="undefined")i.append(o),o=s[0];r.replace(i),r=this.editor.one('[data-iterate="true"]')}},changeToCSS:function(e,t){var n=window.rangy.saveSelection();this.editor.all(".rangySelectionBoundary").setStyle("display",null),this.editor.all(e).addClass(t),this.replaceTags(this.editor.all("."+t),"span"),window.rangy.restoreSelection(n)},changeToTags:function(e,t){var n=window.rangy.saveSelection();this.editor.all(".rangySelectionBoundary").setStyle("display",null),this.replaceTags(this.editor.all('span[class="'+e+'"]'),t),this.editor.all(t+'[class="'+e+'"]').removeAttribute("class"),this.editor.all("."+e).each(function(n){n.wrap("<"+t+"/>"),n.removeClass(e)}),this.editor.all('[class="'+e+'"]').removeAttribute("class"),this.editor.all(t).removeClass(e),window.rangy.restoreSelection(n)}},e.Base.mix(e.M.editor_atto.Editor,[b]),w.ATTRS={},w.prototype={toolbar:null,openMenus:null,setupToolbar:function(){return this.toolbar=e.Node.create('<div class="'+r.TOOLBAR+'" role="toolbar" aria-live="off"/>'),this.openMenus=[],this._wrapper.appendChild(this.toolbar),this.textareaLabel&&this.toolbar.setAttribute("aria-labelledby",this.textareaLabel.get("id")),this.setupToolbarNavigation(),this}},e.Base.mix(e.M.editor_atto.Editor,[w]),E.ATTRS={},E.prototype={_tabFocus:null,setupToolbarNavigation:function(){return this._wrapper.delegate("key",this.toolbarKeyboardNavigation,"down:37,39","."+r.TOOLBAR,this),this._wrapper.delegate("focus",function(e){this._setTabFocus(e.currentTarget)},"."+r.TOOLBAR+" button",this),this},toolbarKeyboardNavigation:function(e){e.preventDefault();var t=this.toolbar.all("button"),n=1,r,i=e.target.ancestor("button",!0);e.keyCode===37&&(n=-1),r=this._findFirstFocusable(t,i,n),r&&(r.focus(),this._setTabFocus(r))},_findFirstFocusable:function(e,t,n){var r=0,i,s,o,u;u=e.indexOf(t),u<-1&&(u=0);while(r<e.size()){u+=n,u<0?u=e.size()-1:u>=e.size()&&(u=0),s=e.item(u),r++;if(s.hasAttribute("hidden")||s.hasAttribute("disabled"))continue;i=s.ancestor(".atto_group");if(i.hasAttribute("hidden"))continue;o=s;break}return o},checkTabFocus:function(){if(this._tabFocus)if(this._tabFocus.hasAttribute("disabled")||this._tabFocus.hasAttribute("hidden")||this._tabFocus.ancestor(".atto_group").hasAttribute("hidden")){var e=this._findFirstFocusable(this.toolbar.all("button"),this._tabFocus,-1);e&&(this._tabFocus.compareTo(document.activeElement)&&e.focus(),this._setTabFocus(e))}return this},_setTabFocus:function(e){return this._tabFocus&&this._tabFocus.setAttribute("tabindex","-1"),this._tabFocus=e,this._tabFocus.setAttribute("tabindex",0),this.toolbar.setAttribute("aria-activedescendant",this._tabFocus.generateID()),this}},e.Base.mix(e.M.editor_atto.Editor,[E]),S.ATTRS={},S.prototype={_selections:null,_lastSelection:null,_focusFromClick:!1,_gesturestartededitor:!1,setupSelectionWatchers:function(){return this.on("atto:selectionchanged",this.saveSelection,this),this.editor.on("focus",this.restoreSelection,this),this.editor.on("mousedown",function(){this._focusFromClick=!0},this),this.editor.on("blur",function(){this._focusFromClick=!1,this.updateOriginal()},this),this.editor.on(["keyup","focus"],function(t){e.soon(e.bind(this._hasSelectionChanged
+,this,t))},this),e.one(document.body).on("gesturemovestart",function(e){this._wrapper.contains(e.target._node)?this._gesturestartededitor=!0:this._gesturestartededitor=!1},null,this),e.one(document.body).on("gesturemoveend",function(t){if(!this._gesturestartededitor)return;e.soon(e.bind(this._hasSelectionChanged,this,t))},{standAlone:!0},this),this},isActive:function(){var e=i.createRange(),t=i.getSelection();return t.rangeCount?!document.activeElement||!this.editor.compareTo(document.activeElement)&&!this.editor.contains(document.activeElement)?!1:(e.selectNode(this.editor.getDOMNode()),e.intersectsRange(t.getRangeAt(0))):!1},getSelectionFromNode:function(e){var t=i.createRange();return t.selectNode(e.getDOMNode()),[t]},saveSelection:function(){this.isActive()&&(this._selections=this.getSelection())},restoreSelection:function(){this._focusFromClick||this._selections&&this.setSelection(this._selections),this._focusFromClick=!1},getSelection:function(){return i.getSelection().getAllRanges()},selectionContainsNode:function(e){return i.getSelection().containsNode(e.getDOMNode(),!0)},selectionFilterMatches:function(e,t,n){typeof n=="undefined"&&(n=!0),t||(t=this.getSelectedNodes());var r=t.size()>0,i=!1,s=this.editor,o=function(e){return e===s};return s.one(e)?(t.each(function(t){if(n){if(!r||!t.ancestor(e,!0,o))r=!1}else!i&&t.ancestor(e,!0,o)&&(i=!0)},this),n?r:i):!1},getSelectedNodes:function(){var t=new e.NodeList,n,r,s,o,u;r=i.getSelection(),r.rangeCount?s=r.getRangeAt(0):s=i.createRange(),s.collapsed&&s.commonAncestorContainer!==this.editor.getDOMNode()&&s.commonAncestorContainer!==e.config.doc&&(s=s.cloneRange(),s.selectNode(s.commonAncestorContainer)),n=s.getNodes();for(u=0;u<n.length;u++)o=e.one(n[u]),this.editor.contains(o)&&t.push(o);return t},_hasSelectionChanged:function(e){var t=i.getSelection(),n,r=!1;return t.rangeCount?n=t.getRangeAt(0):n=i.createRange(),this._lastSelection&&!this._lastSelection.equals(n)?(r=!0,this._fireSelectionChanged(e)):(this._lastSelection=n,r)},_fireSelectionChanged:function(e){this.fire("atto:selectionchanged",{event:e,selectedNodes:this.getSelectedNodes()})},getSelectionParentNode:function(){var e=i.getSelection();return e.rangeCount?e.getRangeAt(0).commonAncestorContainer:!1},setSelection:function(e){var t=i.getSelection();t.setRanges(e)},insertContentAtFocusPoint:function(t){var n=i.getSelection(),r,s=e.Node.create(t);return n.rangeCount&&(r=n.getRangeAt(0)),r&&(r.deleteContents(),r.insertNode(s.getDOMNode())),s}},e.Base.mix(e.M.editor_atto.Editor,[S]),x.ATTRS={},x.prototype={disableCssStyling:function(){try{document.execCommand("styleWithCSS",0,!1)}catch(e){try{document.execCommand("useCSS",0,!0)}catch(t){try{document.execCommand("styleWithCSS",!1,!1)}catch(n){}}}},enableCssStyling:function(){try{document.execCommand("styleWithCSS",0,!0)}catch(e){try{document.execCommand("useCSS",0,!1)}catch(t){try{document.execCommand("styleWithCSS",!1,!0)}catch(n){}}}},toggleInlineSelectionClass:function(e){var t=e.join(" "),n=i.createClassApplier(t,{normalize:!0});n.toggleSelection()},formatSelectionInlineStyle:function(e){var t=this.PLACEHOLDER_CLASS,n=i.createClassApplier(t,{normalize:!0});n.applyToSelection(),this.editor.all("."+t).each(function(n){n.removeClass(t).setStyles(e)},this)},formatSelectionBlock:function(t,n){var r=this.getSelectionParentNode(),i,s,o,u,a,f;if(!r)return!1;i=this.editor,r=e.one(r),s=r.ancestor(function(e){var t=e.get("tagName");return t&&(t=t.toLowerCase()),e===i||t==="td"||t==="th"},!0),s&&(i=s),o=r.ancestor(this.BLOCK_TAGS.join(", "),!0),o&&(a=o.ancestor(function(e){return e===i},!1),a||(o=!1)),o||(u=e.Node.create("<p></p>"),i.get("childNodes").each(function(e){u.append(e.remove())}),i.append(u),o=u),t&&t!==""&&(f=e.Node.create("<"+t+"></"+t+">"),f.setAttrs(o.getAttrs()),o.get("childNodes").each(function(e){e.remove(),f.append(e)}),o.replace(f),o=f),n&&o.setAttrs(n);var l=this.getSelectionFromNode(o);return this.setSelection(l),o}},e.Base.mix(e.M.editor_atto.Editor,[x]),T.ATTRS={filepickeroptions:{value:{}}},T.prototype={canShowFilepicker:function(e){return typeof this.get("filepickeroptions")[e]!="undefined"},showFilepicker:function(t,n,r){var i=this;e.use("core_filepicker",function(e){var s=e.clone(i.get("filepickeroptions")[t],!0);s.formcallback=n,r&&(s.magicscope=r),M.core_filepicker.show(e,s)})}},e.Base.mix(e.M.editor_atto.Editor,[T])},"@VERSION@",{requires:["node","transition","io","overlay","escape","event","event-simulate","event-custom","node-event-html5","yui-throttle","moodle-core-notification-dialogue","moodle-core-notification-confirm","moodle-editor_atto-rangy","handlebars","timers","querystring-stringify"]});
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js
index 4680aeff254..8384b85f5f1 100644
--- a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js
@@ -922,6 +922,11 @@ EditorAutosave.prototype = {
         this.showMessage(M.util.get_string('textrecovered', 'editor_atto'),
                 NOTIFY_INFO, RECOVER_MESSAGE_TIMEOUT);
 
+        // Fire an event that the editor content has changed.
+        require(['core/event'], function(event) {
+            event.notifyEditorContentRestored();
+        });
+
         return this;
     },
 
diff --git a/lib/editor/atto/yui/src/editor/js/autosave.js b/lib/editor/atto/yui/src/editor/js/autosave.js
index 7df539e37f2..94305570e42 100644
--- a/lib/editor/atto/yui/src/editor/js/autosave.js
+++ b/lib/editor/atto/yui/src/editor/js/autosave.js
@@ -206,6 +206,11 @@ EditorAutosave.prototype = {
         this.showMessage(M.util.get_string('textrecovered', 'editor_atto'),
                 NOTIFY_INFO, RECOVER_MESSAGE_TIMEOUT);
 
+        // Fire an event that the editor content has changed.
+        require(['core/event'], function(event) {
+            event.notifyEditorContentRestored();
+        });
+
         return this;
     },
 
diff --git a/lib/yui/build/moodle-core-event/moodle-core-event-debug.js b/lib/yui/build/moodle-core-event/moodle-core-event-debug.js
index 75d33c19f6d..1dd7edc4e2a 100644
--- a/lib/yui/build/moodle-core-event/moodle-core-event-debug.js
+++ b/lib/yui/build/moodle-core-event/moodle-core-event-debug.js
@@ -41,7 +41,15 @@ M.core.event = M.core.event || {
      * @event "filter-content-updated"
      * @param nodes {Y.NodeList} List of nodes added to the DOM.
      */
-    FILTER_CONTENT_UPDATED: "filter-content-updated"
+    FILTER_CONTENT_UPDATED: "filter-content-updated",
+    /**
+     * This event is triggered when an editor has recovered some draft text.
+     * It can be used to determine let other sections know that they should reset their
+     * form comparison for changes.
+     *
+     * @event "editor-content-restored"
+     */
+    EDITOR_CONTENT_RESTORED: "editor-content-restored"
 };
 
 M.core.globalEvents = M.core.globalEvents || {
diff --git a/lib/yui/build/moodle-core-event/moodle-core-event-min.js b/lib/yui/build/moodle-core-event/moodle-core-event-min.js
index 7a13d0dff04..ae188f2f68c 100644
--- a/lib/yui/build/moodle-core-event/moodle-core-event-min.js
+++ b/lib/yui/build/moodle-core-event/moodle-core-event-min.js
@@ -1 +1 @@
-YUI.add("moodle-core-event",function(e,t){var n="moodle-core-event";M.core=M.core||{},M.core.event=M.core.event||{FILTER_CONTENT_UPDATED:"filter-content-updated"},M.core.globalEvents=M.core.globalEvents||{FORM_ERROR:"form_error",BLOCK_CONTENT_UPDATED:"block_content_updated"};var r={emitFacade:!0,defaultFn:function(e){},preventedFn:function(e){},stoppedFn:function(e){}},i;for(i in M.core.event)M.core.event.hasOwnProperty(i)&&e.getEvent(M.core.event[i])===null&&e.publish(M.core.event[i],r);for(i in M.core.globalEvents)M.core.globalEvents.hasOwnProperty(i)&&e.Global.getEvent(M.core.globalEvents[i])===null&&e.Global.publish(M.core.globalEvents[i],e.merge(r,{broadcast:!0}))},"@VERSION@",{requires:["event-custom"]});
+YUI.add("moodle-core-event",function(e,t){var n="moodle-core-event";M.core=M.core||{},M.core.event=M.core.event||{FILTER_CONTENT_UPDATED:"filter-content-updated",EDITOR_CONTENT_RESTORED:"editor-content-restored"},M.core.globalEvents=M.core.globalEvents||{FORM_ERROR:"form_error",BLOCK_CONTENT_UPDATED:"block_content_updated"};var r={emitFacade:!0,defaultFn:function(e){},preventedFn:function(e){},stoppedFn:function(e){}},i;for(i in M.core.event)M.core.event.hasOwnProperty(i)&&e.getEvent(M.core.event[i])===null&&e.publish(M.core.event[i],r);for(i in M.core.globalEvents)M.core.globalEvents.hasOwnProperty(i)&&e.Global.getEvent(M.core.globalEvents[i])===null&&e.Global.publish(M.core.globalEvents[i],e.merge(r,{broadcast:!0}))},"@VERSION@",{requires:["event-custom"]});
diff --git a/lib/yui/build/moodle-core-event/moodle-core-event.js b/lib/yui/build/moodle-core-event/moodle-core-event.js
index a54d395e503..847ca8f77b1 100644
--- a/lib/yui/build/moodle-core-event/moodle-core-event.js
+++ b/lib/yui/build/moodle-core-event/moodle-core-event.js
@@ -41,7 +41,15 @@ M.core.event = M.core.event || {
      * @event "filter-content-updated"
      * @param nodes {Y.NodeList} List of nodes added to the DOM.
      */
-    FILTER_CONTENT_UPDATED: "filter-content-updated"
+    FILTER_CONTENT_UPDATED: "filter-content-updated",
+    /**
+     * This event is triggered when an editor has recovered some draft text.
+     * It can be used to determine let other sections know that they should reset their
+     * form comparison for changes.
+     *
+     * @event "editor-content-restored"
+     */
+    EDITOR_CONTENT_RESTORED: "editor-content-restored"
 };
 
 M.core.globalEvents = M.core.globalEvents || {
diff --git a/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker-debug.js b/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker-debug.js
index 6fbee86da65..4b4f09adade 100644
--- a/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker-debug.js
+++ b/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker-debug.js
@@ -38,6 +38,9 @@ Y.extend(FORMCHANGECHECKER, Y.Base, {
                 return;
             }
 
+            // Add a listener here for an editor restore event.
+            Y.on(M.core.event.EDITOR_CONTENT_RESTORED, M.core_formchangechecker.reset_form_dirty_state, this);
+
             // Add change events to the form elements
             currentform.delegate('change', M.core_formchangechecker.set_form_changed, 'input', this);
             currentform.delegate('change', M.core_formchangechecker.set_form_changed, 'textarea', this);
@@ -214,4 +217,4 @@ M.core_formchangechecker.report_form_dirty_state = function(e) {
 };
 
 
-}, '@VERSION@', {"requires": ["base", "event-focus"]});
+}, '@VERSION@', {"requires": ["base", "event-focus", "moodle-core-event"]});
diff --git a/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker-min.js b/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker-min.js
index af2f3e2249d..6e2c93e44f3 100644
--- a/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker-min.js
+++ b/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker-min.js
@@ -1 +1 @@
-YUI.add("moodle-core-formchangechecker",function(e,t){var n="core-formchangechecker",r=function(){r.superclass.constructor.apply(this,arguments)};e.extend(r,e.Base,{initialvaluelisteners:[],initializer:function(){var t="form#"+this.get("formid"),n=e.one(t);if(!n)return;n.delegate("change",M.core_formchangechecker.set_form_changed,"input",this),n.delegate("change",M.core_formchangechecker.set_form_changed,"textarea",this),n.delegate("change",M.core_formchangechecker.set_form_changed,"select",this),this.initialvaluelisteners.push(n.delegate("focus",this.store_initial_value,"input",this)),this.initialvaluelisteners.push(n.delegate("focus",this.store_initial_value,"textarea",this)),this.initialvaluelisteners.push(n.delegate("focus",this.store_initial_value,"select",this)),e.one(t).on("submit",M.core_formchangechecker.set_form_submitted,this),window.onbeforeunload=M.core_formchangechecker.report_form_dirty_state},store_initial_value:function(e){var t;if(e.target.hasClass("ignoredirty"))return;if(M.core_formchangechecker.get_form_dirty_state()){while(this.initialvaluelisteners.length)t=this.initialvaluelisteners.shift(),t.detach();return}M.core_formchangechecker.stateinformation.focused_element={element:e.target,initial_value:e.target.get("value")}}},{NAME:n,ATTRS:{formid:{value:""}}}),M.core_formchangechecker=M.core_formchangechecker||{},M.core_formchangechecker.instances=M.core_formchangechecker.instances||[],M.core_formchangechecker.init=function(e){var t=new r(e);return M.core_formchangechecker.instances.push(t),t},M.core_formchangechecker.stateinformation=[],M.core_formchangechecker.set_form_changed=function(e){if(e&&e.target&&e.target.hasClass("ignoredirty"))return;M.core_formchangechecker.stateinformation.formchanged=1,delete M.core_formchangechecker.stateinformation.focused_element},M.core_formchangechecker.set_form_submitted=function(){M.core_formchangechecker.stateinformation.formsubmitted=1},M.core_formchangechecker.get_form_dirty_state=function(){var e=M.core_formchangechecker.stateinformation,t;if(e.formsubmitted)return 0;if(e.formchanged)return 1;if(e.focused_element&&e.focused_element.element.get("value")!==e.focused_element.initial_value)return 1;if(typeof window.tinyMCE!="undefined")for(t in window.tinyMCE.editors)if(window.tinyMCE.editors[t].isDirty())return 1;return 0},M.core_formchangechecker.reset_form_dirty_state=function(){M.core_formchangechecker.stateinformation.formsubmitted=!1,M.core_formchangechecker.stateinformation.formchanged=!1},M.core_formchangechecker.report_form_dirty_state=function(e){if(!M.core_formchangechecker.get_form_dirty_state())return;var t=M.util.get_string("changesmadereallygoaway","moodle");if(M.cfg.behatsiterunning)return;return e&&(e.returnValue=t),t}},"@VERSION@",{requires:["base","event-focus"]});
+YUI.add("moodle-core-formchangechecker",function(e,t){var n="core-formchangechecker",r=function(){r.superclass.constructor.apply(this,arguments)};e.extend(r,e.Base,{initialvaluelisteners:[],initializer:function(){var t="form#"+this.get("formid"),n=e.one(t);if(!n)return;e.on(M.core.event.EDITOR_CONTENT_RESTORED,M.core_formchangechecker.reset_form_dirty_state,this),n.delegate("change",M.core_formchangechecker.set_form_changed,"input",this),n.delegate("change",M.core_formchangechecker.set_form_changed,"textarea",this),n.delegate("change",M.core_formchangechecker.set_form_changed,"select",this),this.initialvaluelisteners.push(n.delegate("focus",this.store_initial_value,"input",this)),this.initialvaluelisteners.push(n.delegate("focus",this.store_initial_value,"textarea",this)),this.initialvaluelisteners.push(n.delegate("focus",this.store_initial_value,"select",this)),e.one(t).on("submit",M.core_formchangechecker.set_form_submitted,this),window.onbeforeunload=M.core_formchangechecker.report_form_dirty_state},store_initial_value:function(e){var t;if(e.target.hasClass("ignoredirty"))return;if(M.core_formchangechecker.get_form_dirty_state()){while(this.initialvaluelisteners.length)t=this.initialvaluelisteners.shift(),t.detach();return}M.core_formchangechecker.stateinformation.focused_element={element:e.target,initial_value:e.target.get("value")}}},{NAME:n,ATTRS:{formid:{value:""}}}),M.core_formchangechecker=M.core_formchangechecker||{},M.core_formchangechecker.instances=M.core_formchangechecker.instances||[],M.core_formchangechecker.init=function(e){var t=new r(e);return M.core_formchangechecker.instances.push(t),t},M.core_formchangechecker.stateinformation=[],M.core_formchangechecker.set_form_changed=function(e){if(e&&e.target&&e.target.hasClass("ignoredirty"))return;M.core_formchangechecker.stateinformation.formchanged=1,delete M.core_formchangechecker.stateinformation.focused_element},M.core_formchangechecker.set_form_submitted=function(){M.core_formchangechecker.stateinformation.formsubmitted=1},M.core_formchangechecker.get_form_dirty_state=function(){var e=M.core_formchangechecker.stateinformation,t;if(e.formsubmitted)return 0;if(e.formchanged)return 1;if(e.focused_element&&e.focused_element.element.get("value")!==e.focused_element.initial_value)return 1;if(typeof window.tinyMCE!="undefined")for(t in window.tinyMCE.editors)if(window.tinyMCE.editors[t].isDirty())return 1;return 0},M.core_formchangechecker.reset_form_dirty_state=function(){M.core_formchangechecker.stateinformation.formsubmitted=!1,M.core_formchangechecker.stateinformation.formchanged=!1},M.core_formchangechecker.report_form_dirty_state=function(e){if(!M.core_formchangechecker.get_form_dirty_state())return;var t=M.util.get_string("changesmadereallygoaway","moodle");if(M.cfg.behatsiterunning)return;return e&&(e.returnValue=t),t}},"@VERSION@",{requires:["base","event-focus","moodle-core-event"]});
diff --git a/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker.js b/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker.js
index 6fbee86da65..4b4f09adade 100644
--- a/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker.js
+++ b/lib/yui/build/moodle-core-formchangechecker/moodle-core-formchangechecker.js
@@ -38,6 +38,9 @@ Y.extend(FORMCHANGECHECKER, Y.Base, {
                 return;
             }
 
+            // Add a listener here for an editor restore event.
+            Y.on(M.core.event.EDITOR_CONTENT_RESTORED, M.core_formchangechecker.reset_form_dirty_state, this);
+
             // Add change events to the form elements
             currentform.delegate('change', M.core_formchangechecker.set_form_changed, 'input', this);
             currentform.delegate('change', M.core_formchangechecker.set_form_changed, 'textarea', this);
@@ -214,4 +217,4 @@ M.core_formchangechecker.report_form_dirty_state = function(e) {
 };
 
 
-}, '@VERSION@', {"requires": ["base", "event-focus"]});
+}, '@VERSION@', {"requires": ["base", "event-focus", "moodle-core-event"]});
diff --git a/lib/yui/src/event/js/event.js b/lib/yui/src/event/js/event.js
index f30f900ae28..8ceff44b3ae 100644
--- a/lib/yui/src/event/js/event.js
+++ b/lib/yui/src/event/js/event.js
@@ -39,7 +39,15 @@ M.core.event = M.core.event || {
      * @event "filter-content-updated"
      * @param nodes {Y.NodeList} List of nodes added to the DOM.
      */
-    FILTER_CONTENT_UPDATED: "filter-content-updated"
+    FILTER_CONTENT_UPDATED: "filter-content-updated",
+    /**
+     * This event is triggered when an editor has recovered some draft text.
+     * It can be used to determine let other sections know that they should reset their
+     * form comparison for changes.
+     *
+     * @event "editor-content-restored"
+     */
+    EDITOR_CONTENT_RESTORED: "editor-content-restored"
 };
 
 M.core.globalEvents = M.core.globalEvents || {
diff --git a/lib/yui/src/formchangechecker/js/formchangechecker.js b/lib/yui/src/formchangechecker/js/formchangechecker.js
index db1023f2cb4..998bcd5099e 100644
--- a/lib/yui/src/formchangechecker/js/formchangechecker.js
+++ b/lib/yui/src/formchangechecker/js/formchangechecker.js
@@ -36,6 +36,9 @@ Y.extend(FORMCHANGECHECKER, Y.Base, {
                 return;
             }
 
+            // Add a listener here for an editor restore event.
+            Y.on(M.core.event.EDITOR_CONTENT_RESTORED, M.core_formchangechecker.reset_form_dirty_state, this);
+
             // Add change events to the form elements
             currentform.delegate('change', M.core_formchangechecker.set_form_changed, 'input', this);
             currentform.delegate('change', M.core_formchangechecker.set_form_changed, 'textarea', this);
diff --git a/lib/yui/src/formchangechecker/meta/formchangechecker.json b/lib/yui/src/formchangechecker/meta/formchangechecker.json
index ca81382cf08..8490d8bc38b 100644
--- a/lib/yui/src/formchangechecker/meta/formchangechecker.json
+++ b/lib/yui/src/formchangechecker/meta/formchangechecker.json
@@ -2,7 +2,8 @@
   "moodle-core-formchangechecker": {
     "requires": [
       "base",
-      "event-focus"
+      "event-focus",
+      "moodle-core-event"
     ]
   }
 }
diff --git a/mod/assign/amd/build/grading_panel.min.js b/mod/assign/amd/build/grading_panel.min.js
index 8f5faad558b..012556a6e1e 100644
--- a/mod/assign/amd/build/grading_panel.min.js
+++ b/mod/assign/amd/build/grading_panel.min.js
@@ -1 +1 @@
-define(["jquery","core/notification","core/templates","core/fragment","core/ajax","core/str","mod_assign/grading_form_change_checker","mod_assign/grading_events"],function(a,b,c,d,e,f,g,h){var i=function(b){this._regionSelector=b,this._region=a(b),this._userCache=[],this.registerEventListeners()};return i.prototype._regionSelector=null,i.prototype._lastUserId=0,i.prototype._lastAttemptNumber=-1,i.prototype._region=null,i.prototype._niceReplaceNodeContents=function(b,d,e){var f=a.Deferred();return b.fadeOut("fast",function(){c.replaceNodeContents(b,d,e),b.fadeIn("fast",function(){f.resolve()})}),f.promise()},i.prototype._saveFormState=function(){"undefined"!=typeof window.tinyMCE&&window.tinyMCE.triggerSave();var b=a('[data-region="grading-actions-form"] [name="sendstudentnotifications"]').val();a('.gradeform [name="sendstudentnotifications"]').val(b)},i.prototype._submitForm=function(c,d){var f=a(this._region.find("form.gradeform"));a('[data-region="overlay"]').show(),f.trigger("save-form-state");var g=f.serialize(),h=this._region.attr("data-assignmentid");e.call([{methodname:"mod_assign_submit_grading_form",args:{assignmentid:h,userid:this._lastUserId,jsonformdata:JSON.stringify(g)},done:this._handleFormSubmissionResponse.bind(this,g,d),fail:b.exception}])},i.prototype._handleFormSubmissionResponse=function(c,d,e){"undefined"==typeof d&&(d=this._lastUserId),e.length?a(document).trigger("reset",[this._lastUserId,c]):(f.get_strings([{key:"changessaved",component:"core"},{key:"gradechangessaveddetail",component:"mod_assign"}]).done(function(a){b.alert(a[0],a[1])}).fail(b.exception),d==this._lastUserId?a(document).trigger("reset",d):a(document).trigger("user-changed",d)),a('[data-region="overlay"]').hide()},i.prototype._resetForm=function(b,c,d){var e=a.Event("custom");"undefined"==typeof c&&(c=this._lastUserId),this._lastUserId=0,this._refreshGradingPanel(e,c,d)},i.prototype._chooseAttempt=function(c){var d=a(c.target),e=d.data("submissions"),g=a(document.getElementById(e)),h=g.clone(),i=h.wrap(a("<form/>")).html();f.get_strings([{key:"viewadifferentattempt",component:"mod_assign"},{key:"view",component:"core"},{key:"cancel",component:"core"}]).done(function(c){b.confirm(c[0],i,c[1],c[2],function(){var b=a("input:radio[name='select-attemptnumber']:checked").val();this._refreshGradingPanel(null,this._lastUserId,"",b)}.bind(this))}.bind(this)).fail(b.exception)},i.prototype._addPopoutButtons=function(d){var e=a(d);c.render("mod_assign/popout_button",{}).done(function(a){e.find(".fitem_ffilemanager .fitemtitle").append(a),e.find(".fitem_feditor .fitemtitle").append(a),e.find(".fitem_f .fitemtitle").append(a),e.on("click",'[data-region="popout-button"]',this._togglePopout.bind(this))}.bind(this)).fail(b.exception)},i.prototype._togglePopout=function(b){b.preventDefault();var c=a(b.target).closest(".fitem");c.hasClass("popout")?a(".popout").removeClass("popout"):(a(".popout").removeClass("popout"),c.addClass("popout"),c.addClass("moodle-has-zindex"))},i.prototype._refreshGradingPanel=function(e,f,h,i){var j=this._region.attr("data-contextid");"undefined"==typeof h&&(h=""),"undefined"==typeof i&&(i=-1),this._lastUserId==f&&this._lastAttemptNumber==i&&""===h||(this._lastUserId=f,this._lastAttemptNumber=i,a(document).trigger("start-loading-user"),window.M.util.js_pending("mod-assign-loading-user"),c.render("mod_assign/loading",{}).done(function(c,e){this._niceReplaceNodeContents(this._region,c,e).done(function(){if(f>0){this._region.show();var c={userid:f,attemptnumber:i,jsonformdata:JSON.stringify(h)};d.loadFragment("mod_assign","gradingpanel",j,c).done(function(c,d){this._niceReplaceNodeContents(this._region,c,d).done(function(){g.saveFormState('[data-region="grade-panel"] .gradeform'),a('[data-region="attempt-chooser"]').on("click",this._chooseAttempt.bind(this)),this._addPopoutButtons('[data-region="grade-panel"] .gradeform'),a(document).trigger("finish-loading-user"),window.M.util.js_complete("mod-assign-loading-user")}.bind(this)).fail(b.exception)}.bind(this)).fail(b.exception)}else{this._region.hide();var e=a('[data-region="review-panel"]');e.length&&this._niceReplaceNodeContents(e,"",""),a(document).trigger("finish-loading-user"),window.M.util.js_complete("mod-assign-loading-user")}}.bind(this))}.bind(this)).fail(b.exception))},i.prototype.getPanelElement=function(){return a('[data-region="grade-panel"]')},i.prototype.collapsePanel=function(){this.getPanelElement().addClass("collapsed")},i.prototype.expandPanel=function(){this.getPanelElement().removeClass("collapsed")},i.prototype.registerEventListeners=function(){var b=a(document);b.on("user-changed",this._refreshGradingPanel.bind(this)),b.on("save-changes",this._submitForm.bind(this)),b.on("reset",this._resetForm.bind(this)),b.on("save-form-state",this._saveFormState.bind(this)),b.on(h.COLLAPSE_GRADE_PANEL,function(){this.collapsePanel()}.bind(this)),b.on(h.COLLAPSE_REVIEW_PANEL,function(){this.expandPanel()}.bind(this)),b.on(h.EXPAND_GRADE_PANEL,function(){this.expandPanel()}.bind(this))},i});
\ No newline at end of file
+define(["jquery","core/notification","core/templates","core/fragment","core/ajax","core/str","mod_assign/grading_form_change_checker","mod_assign/grading_events"],function(a,b,c,d,e,f,g,h){var i=function(b){this._regionSelector=b,this._region=a(b),this._userCache=[],this.registerEventListeners()};return i.prototype._regionSelector=null,i.prototype._lastUserId=0,i.prototype._lastAttemptNumber=-1,i.prototype._region=null,i.prototype._niceReplaceNodeContents=function(b,d,e){var f=a.Deferred();return b.fadeOut("fast",function(){c.replaceNodeContents(b,d,e),b.fadeIn("fast",function(){f.resolve()})}),f.promise()},i.prototype._saveFormState=function(){"undefined"!=typeof window.tinyMCE&&window.tinyMCE.triggerSave();var b=a('[data-region="grading-actions-form"] [name="sendstudentnotifications"]').val();a('.gradeform [name="sendstudentnotifications"]').val(b)},i.prototype._submitForm=function(c,d){var f=a(this._region.find("form.gradeform"));a('[data-region="overlay"]').show(),f.trigger("save-form-state");var g=f.serialize(),h=this._region.attr("data-assignmentid");e.call([{methodname:"mod_assign_submit_grading_form",args:{assignmentid:h,userid:this._lastUserId,jsonformdata:JSON.stringify(g)},done:this._handleFormSubmissionResponse.bind(this,g,d),fail:b.exception}])},i.prototype._handleFormSubmissionResponse=function(c,d,e){"undefined"==typeof d&&(d=this._lastUserId),e.length?a(document).trigger("reset",[this._lastUserId,c]):(f.get_strings([{key:"changessaved",component:"core"},{key:"gradechangessaveddetail",component:"mod_assign"}]).done(function(a){b.alert(a[0],a[1])}).fail(b.exception),d==this._lastUserId?a(document).trigger("reset",d):a(document).trigger("user-changed",d)),a('[data-region="overlay"]').hide()},i.prototype._resetForm=function(b,c,d){var e=a.Event("custom");"undefined"==typeof c&&(c=this._lastUserId),this._lastUserId=0,this._refreshGradingPanel(e,c,d)},i.prototype._chooseAttempt=function(c){var d=a(c.target),e=d.data("submissions"),g=a(document.getElementById(e)),h=g.clone(),i=h.wrap(a("<form/>")).html();f.get_strings([{key:"viewadifferentattempt",component:"mod_assign"},{key:"view",component:"core"},{key:"cancel",component:"core"}]).done(function(c){b.confirm(c[0],i,c[1],c[2],function(){var b=a("input:radio[name='select-attemptnumber']:checked").val();this._refreshGradingPanel(null,this._lastUserId,"",b)}.bind(this))}.bind(this)).fail(b.exception)},i.prototype._addPopoutButtons=function(d){var e=a(d);c.render("mod_assign/popout_button",{}).done(function(a){e.find(".fitem_ffilemanager .fitemtitle").append(a),e.find(".fitem_feditor .fitemtitle").append(a),e.find(".fitem_f .fitemtitle").append(a),e.on("click",'[data-region="popout-button"]',this._togglePopout.bind(this))}.bind(this)).fail(b.exception)},i.prototype._togglePopout=function(b){b.preventDefault();var c=a(b.target).closest(".fitem");c.hasClass("popout")?a(".popout").removeClass("popout"):(a(".popout").removeClass("popout"),c.addClass("popout"),c.addClass("moodle-has-zindex"))},i.prototype._refreshGradingPanel=function(e,f,h,i){var j=this._region.attr("data-contextid");"undefined"==typeof h&&(h=""),"undefined"==typeof i&&(i=-1),this._lastUserId==f&&this._lastAttemptNumber==i&&""===h||(this._lastUserId=f,this._lastAttemptNumber=i,a(document).trigger("start-loading-user"),window.M.util.js_pending("mod-assign-loading-user"),c.render("mod_assign/loading",{}).done(function(c,e){this._niceReplaceNodeContents(this._region,c,e).done(function(){if(f>0){this._region.show();var c={userid:f,attemptnumber:i,jsonformdata:JSON.stringify(h)};d.loadFragment("mod_assign","gradingpanel",j,c).done(function(c,d){this._niceReplaceNodeContents(this._region,c,d).done(function(){g.saveFormState('[data-region="grade-panel"] .gradeform'),a(document).on("editor-content-restored",function(){g.saveFormState('[data-region="grade-panel"] .gradeform')}),a('[data-region="attempt-chooser"]').on("click",this._chooseAttempt.bind(this)),this._addPopoutButtons('[data-region="grade-panel"] .gradeform'),a(document).trigger("finish-loading-user"),window.M.util.js_complete("mod-assign-loading-user")}.bind(this)).fail(b.exception)}.bind(this)).fail(b.exception)}else{this._region.hide();var e=a('[data-region="review-panel"]');e.length&&this._niceReplaceNodeContents(e,"",""),a(document).trigger("finish-loading-user"),window.M.util.js_complete("mod-assign-loading-user")}}.bind(this))}.bind(this)).fail(b.exception))},i.prototype.getPanelElement=function(){return a('[data-region="grade-panel"]')},i.prototype.collapsePanel=function(){this.getPanelElement().addClass("collapsed")},i.prototype.expandPanel=function(){this.getPanelElement().removeClass("collapsed")},i.prototype.registerEventListeners=function(){var b=a(document);b.on("user-changed",this._refreshGradingPanel.bind(this)),b.on("save-changes",this._submitForm.bind(this)),b.on("reset",this._resetForm.bind(this)),b.on("save-form-state",this._saveFormState.bind(this)),b.on(h.COLLAPSE_GRADE_PANEL,function(){this.collapsePanel()}.bind(this)),b.on(h.COLLAPSE_REVIEW_PANEL,function(){this.expandPanel()}.bind(this)),b.on(h.EXPAND_GRADE_PANEL,function(){this.expandPanel()}.bind(this))},i});
\ No newline at end of file
diff --git a/mod/assign/amd/src/grading_panel.js b/mod/assign/amd/src/grading_panel.js
index 4809c752ea3..7cb42fb58d6 100644
--- a/mod/assign/amd/src/grading_panel.js
+++ b/mod/assign/amd/src/grading_panel.js
@@ -282,6 +282,11 @@ define(['jquery', 'core/notification', 'core/templates', 'core/fragment',
                         this._niceReplaceNodeContents(this._region, html, js)
                         .done(function() {
                             checker.saveFormState('[data-region="grade-panel"] .gradeform');
+                            $(document).on('editor-content-restored', function() {
+                                // If the editor has some content that has been restored
+                                // then save the form state again for comparison.
+                                checker.saveFormState('[data-region="grade-panel"] .gradeform');
+                            });
                             $('[data-region="attempt-chooser"]').on('click', this._chooseAttempt.bind(this));
                             this._addPopoutButtons('[data-region="grade-panel"] .gradeform');
                             $(document).trigger('finish-loading-user');