YUI.add("moodle-editor_ousupsub-editor",function(a,d){var n,s,i,e="editor_ousupsub_content",c="editor_ousupsub_content_wrap",h=".editor_ousupsub_content",t="editor_ousupsub_toolbar",p="editor_ousupsub";function o(){o.superclass.constructor.apply(this,arguments)}function r(){}function u(){}function l(){l.superclass.constructor.apply(this,arguments)}a.extend(o,a.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:"ousupsub-tmp-class",ALL_NODES_SELECTOR:"[style],font[face]",FONT_FAMILY:"fontFamily",_wrapper:null,editor:null,toolbar:null,textarea:null,textareaLabel:null,plugins:null,_eventHandles:null,_tabFocus:null,_maxUndos:40,_undoStack:null,_redoStack:null,initializer:function(){this.textarea=a.one(document.getElementById(this.get("elementid"))),this.textarea&&(a.M.editor_ousupsub.addEditorReference(this.get("elementid"),this),this._eventHandles=[],this._wrapper=a.Node.create('<div class="'+p+'"></div>'),this.editor=a.Node.create('<div id="'+this.get("elementid")+'editable" contenteditable="true" autocapitalize="none" autocorrect="off" role="textbox" spellcheck="false" aria-live="off" class="'+e+'"></div>'),this.textareaLabel=a.one('[for="'+this.get("elementid")+'"]'),this.textareaLabel&&(this.textareaLabel.generateID(),this.editor.setAttribute("aria-labelledby",this.textareaLabel.get("id"))),this.setupToolbar(),this.setupTemplateEditor(),this.disableCssStyling(),document.queryCommandSupported("DefaultParagraphSeparator")&&document.execCommand("DefaultParagraphSeparator",!1,"p"),this.textarea.get("parentNode").insert(this._wrapper,this.textarea),this.textarea.hide(),this.updateFromTextArea(),this.setupTextareaNavigation(),this._preventEnter(),this.publishEvents(),this.setupSelectionWatchers(),this.setupAutomaticPolling(),this.setupPlugins())},destructor:function(){a.Array.each(this.plugins,function(e,t){e.destroy(),this.plugins[t]=undefined},this),new a.EventHandle(this._eventHandles).detach(),this.textarea.show(),this._wrapper.remove(!0),a.M.editor_ousupsub.removeEditorReference(this.get("elementid"),this)},focus:function(){return this.editor.focus(),this},publishEvents:function(){return this.publish("change",{broadcast:!0,preventable:!0}),this.publish("pluginsloaded",{fireOnce:!0}),this.publish("ousupsub:selectionchanged",{prefix:"ousupsub"}),this},setupAutomaticPolling:function(){return this._registerEventHandle(this.editor.on(["keyup","cut"],this.updateOriginal,this)),this._registerEventHandle(this.editor.on(["keypress","delete"],this.cleanEditorHTMLSimple,this)),this._registerEventHandle(this.editor.on("paste",this.pasteCleanup,this)),this._registerEventHandle(this.editor.on("drop",this.updateOriginalDelayed,this)),this},updateOriginalDelayed:function(){return setTimeout(a.bind(this.updateOriginal,this),0),this},setupPlugins:function(){var e,t,i,s,n;for(t in this.plugins={},e=this.get("plugins"))if((i=e[t]).plugins)for(s in i.plugins)"superscript"===(n=i.plugins[s]).name?this.plugins.superscript=new a.M.editor_ousupsub.EditorPlugin({name:"superscript",group:i.group,editor:this.editor,toolbar:this.toolbar,host:this,exec:"superscript",tags:"sup",keys:["94"],icon:"e/superscript",keyDescription:"Shift + ^ or Up arrow"}):"subscript"===n.name&&(this.plugins.subscript=new a.M.editor_ousupsub.EditorPlugin({name:"subscript",group:i.group,editor:this.editor,toolbar:this.toolbar,host:this,exec:"subscript",tags:"sub",keys:["95"],icon:"e/subscript",keyDescription:"Shift + _ or Down arrow"}));return this._undoStack=[],this._redoStack=[],this.plugins.undo=new a.M.editor_ousupsub.EditorPlugin({name:"undo",group:i.group,editor:this.editor,toolbar:this.toolbar,host:this,keys:["90"],callback:this._undoHandler}),this.plugins.redo=new a.M.editor_ousupsub.EditorPlugin({name:"redo",group:i.group,editor:this.editor,toolbar:this.toolbar,host:this,keys:["89"],callback:this._redoHandler}),this.on("pluginsloaded",function(){this._addToUndo(this._getHTML()),this.on("ousupsub:selectionchanged",this._changeListener,this)},this),this._updateButtonsStates(),this.setupUndoHandlers(),this.fire("pluginsloaded"),this},setupUndoHandlers:function(){return this._registerEventHandle(this._wrapper.delegate("key",this._undoHandler,"down:90+ctrl","."+e,this)),this._registerEventHandle(this._wrapper.delegate("key",this._redoHandler,"down:89+ctrl","."+e,this)),this},pluginEnabled:function(e){return!!this.plugins[e]},enablePlugins:function(e){this._setPluginState(!0,e)},disablePlugins:function(e){this._setPluginState(!1,e)},_setPluginState:function(e,t){var i=e?"enableButtons":"disableButtons";t?this.plugins[t][i]():a.Object.each(this.plugins,function(e){e[i]()},this)},_registerEventHandle:function(e){this._eventHandles.push(e)},setupToolbar:function(){return this.toolbar=a.Node.create('<div class="'+t+'" role="toolbar" aria-live="off"></div>'),this._wrapper.appendChild(this.toolbar),this.textareaLabel&&this.toolbar.setAttribute("aria-labelledby",this.textareaLabel.get("id")),this.setupToolbarNavigation(),this},setupToolbarNavigation:function(){return this._wrapper.delegate("key",this.toolbarKeyboardNavigation,"down:37,39","."+t,this),this._wrapper.delegate("focus",function(e){this._setTabFocus(e.currentTarget)},"."+t+" button",this),this},toolbarKeyboardNavigation:function(e){e.preventDefault();var t=this.toolbar.all("button"),i=1,s=e.target.ancestor("button",!0);37===e.keyCode&&(i=-1),(e=this._findFirstFocusable(t,s,i))&&(e.focus(),this._setTabFocus(e))},_findFirstFocusable:function(e,t,i){var s,n,o=0,r=e.indexOf(t);for(r<-1&&(r=0);o<e.size();)if((r+=i)<0?r=e.size()-1:r>=e.size()&&(r=0),o++,!(s=e.item(r)).hasAttribute("hidden")&&!s.hasAttribute("disabled")&&!s.ancestor(".ousupsub_group").hasAttribute("hidden")){n=s;break}return n},checkTabFocus:function(){var e;return this._tabFocus&&(!( this._tabFocus.hasAttribute("disabled")||this._tabFocus.hasAttribute("hidden")||this._tabFocus.ancestor(".ousupsub_group").hasAttribute("hidden"))||(e=this._findFirstFocusable(this.toolbar.all("button"),this._tabFocus,-1))&&(this._tabFocus.compareTo(document.activeElement)&&e.focus(),this._setTabFocus(e))),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},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(i){}}}},setupTemplateEditor:function(){var t,e,i,s,n=a.Node.create('<div class="'+c+'"></div>');n.appendChild(this.editor),this._wrapper.appendChild(n),i=6*this.textarea.getAttribute("cols")+41+"px",this.editor.setStyle("width",i),this.editor.setStyle("minWidth",i),this.editor.setStyle("maxWidth",i),i=this.textarea.getAttribute("rows"),i=(t=6*i+13)-6+"px",this.editor.setStyle("height",e=t-10+"px"),this.editor.setStyle("minHeight",e),this.editor.setStyle("maxHeight",e),this.editor.setStyle("line-height",i),n.setStyle("minHeight",i=1+t+"px"),this.textareaLabel.setStyle("display","inline-block"),this.textareaLabel.setStyle("margin",0),this.textareaLabel.setStyle("height",i),this.textareaLabel.setStyle("minHeight",i),this.textareaLabel.setStyle("maxheight",i),this.textareaLabel.hasClass("accesshide")?(this.textareaLabel.removeClass("accesshide"),this.textareaLabel.setStyle("visibility","hidden"),this._wrapper.setStyle("margin-left",-parseInt(this.textareaLabel.get("offsetWidth")))):(this.textareaLabel.getDOMNode().parentNode.style.paddingBottom=e,this.textareaLabel.setStyle("vertical-align","bottom")),n="#"+(s=this).get("elementid").replace(/:/g,"\\:")+"editable",a.on("contentready",function(){s.textareaLabel.setStyle("line-height",s.editor.getComputedStyle("line-height"));var e=1+t+parseInt(s.toolbar.get("offsetHeight"));s._wrapper.setStyle("height",e),s._wrapper.setStyle("minHeight",e),s._wrapper.setStyle("maxHeight",e),a.UA.ie&&"hidden"===s.textareaLabel.getComputedStyle("visibility")&&s._wrapper.setStyle("vertical-align",parseInt(s.toolbar.get("offsetHeight"))-1+"px")},n)},_getEmptyContent:function(){return""},updateFromTextArea:function(){this.editor.setHTML(""),this.editor.append(this.textarea.get("value")),this.cleanEditorHTML(),""===this.editor.getHTML()&&this.editor.setHTML(this._getEmptyContent())},updateOriginal:function(){var e=this.textarea.get("value"),t=this.getCleanHTML();return""===t&&this.isActive()&&(t=this._getEmptyContent()),e!==(t=(t=this._removeUnicodeCharacters(t)).trim())&&(this.textarea.set("value",t),this.fire("change")),this},setupTextareaNavigation:function(){return this._registerEventHandle(this._wrapper.delegate("key",this.textareaKeyboardNavigation,"down:38,40","."+e,this)),this._registerEventHandle(this._wrapper.delegate("key",this.textareaKeyboardNavigation,"press:94, 95","."+e,this)),this},textareaKeyboardNavigation:function(e){var t;e.preventDefault(),YUI.Env.UA.android||this.isActive()||this.focus(),t="",38===(e=(e=window.event||e).keyCode||e.charCode)||94===e?t="superscript":40!==e&&95!==e||(t="subscript"),t&&this._applyTextCommand(t,1)},_preventEnter:function(){var e="keypress";(a.UA.webkit||a.UA.ie)&&(e="keydown"),this.editor.on(e,function(e){e=window.event||e;13===e.keyCode&&(e.preventDefault?e.preventDefault():e.returnValue=!1)},this)},_addToRedo:function(e){this._redoStack.push(e)},_addToUndo:function(e,t){for(void 0===t&&(t=!1),this._undoStack[this._undoStack.length-1]!==e&&(this._undoStack.push(e),t&&(this._redoStack=[]));this._undoStack.length>this._maxUndos;)this._undoStack.shift()},_getHTML:function(){return this.getCleanHTML()},_getRedo:function(){return this._redoStack.pop()},_getUndo:function(e){if(1===this._undoStack.length)return this._undoStack[0];var t=this._undoStack.pop();return t===e&&(t=this._undoStack.pop()),0===this._undoStack.length&&this._addToUndo(t),t},_restoreValue:function(e){this.editor.setHTML(e),this._addToUndo(e)},_updateButtonsStates:function(){1<this._undoStack.length?this.enablePlugins("undo"):this.disablePlugins("undo"),0<this._redoStack.length?this.enablePlugins("redo"):this.disablePlugins("redo")},_undoHandler:function(e){e.preventDefault();var e=this._getHTML(),t=this._getUndo(e);e!==t&&(this._restoreValue(t),this._addToRedo(e)),this._updateButtonsStates()},_redoHandler:function(e){e.preventDefault();var e=this._getHTML(),t=this._getRedo();t!==undefined&&e!==t&&this._restoreValue(t),this._updateButtonsStates()},_changeListener:function(e){e.event&&-1!==e.event.type.indexOf("key")&&39!==e.event.keyCode&&37!==e.event.keyCode&&40!==e.event.keyCode&&38!==e.event.keyCode||(this._addToUndo(this._getHTML(),!0),this._updateButtonsStates())}},{NS:"editor_ousupsub",ATTRS:{elementid:{value:null,writeOnce:!0},contextid:{value:null,writeOnce:!0},plugins:{value:{},writeOnce:!0}}}),a.augment(o,a.EventTarget),a.namespace("M.editor_ousupsub").Editor=o,r.ATTRS={},r.prototype={getCleanHTML:function(){var e,t=this.editor.cloneNode(!0);return a.each(t.all('[id^="yui"]'),function(e){e.removeAttribute("id")}),t.all(".ousupsub_control").remove(!0),""===(t=t.get("innerHTML"))||"<br>"===t?"":(0===t.indexOf("")&&(e=t.length-("".length+"".length),t=t.substr("".length,e)),this._cleanHTML(t))},cleanEditorHTML:function(){return this.editor.set("innerHTML",this._cleanHTML(this.editor.get("innerHTML"))),this},cleanEditorHTMLSimple:function(){var e=window.rangy.saveSelection();return this.editor.set("innerHTML",this._cleanHTMLSimple(this.editor.get("innerHTML"))),window.rangy.restoreSelection(e,!0),this},_cleanHTMLSimple:function(e){return this._filterContentWithRules(e,[{regex:/<span(?![^>]*?rangySelectionBoundary[^>]*?)[^>]*>(.+)<\/span>/gi,replace:"$1"}])},_cleanHTML:function(e){return this._filterContentWithRules(e,[{ regex:/<p[^>]*>(&nbsp;|\s)*<\/p>/gi,replace:""},{regex:/<sup[^>]*(&nbsp;|\s)*>/gi,replace:"<sup>"},{regex:/<sub[^>]*(&nbsp;|\s)*>/gi,replace:"<sub>"},{regex:/&nbsp;/gi,replace:" 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e=window.rangy.saveSelection(),t=this.editor.get("innerHTML"),t=this._cleanEditorHTMLEmptySupAndSubTags(t),t=this._removeUnicodeCharacters(t);return this.editor.set("innerHTML",t),window.rangy.restoreSelection(e,!0),this},_cleanEditorHTMLEmptySupAndSubTags:function(e){return this._filterContentWithRules(e,[{regex:/<su[bp][^>]*>(&#65279;|\s)*<\/su[bp]>/gi,replace:""}])},_filterContentWithRules:function(e,t){for(var i=0,i=0;i<t.length;i++)e=e.replace(t[i].regex,t[i].replace);return e},pasteCleanup:function(e){var t,i,s,n;if("paste"!==e.type)return this.updateOriginalDelayed(),!0;if((t=e._event)&&t.clipboardData&&t.clipboardData.getData){if(i=!1,n=t.clipboardData.types)if("function"==typeof n.contains)i=n.contains("text/html");else{if("function"!=typeof n.indexOf)return this.fallbackPasteCleanupDelayed(),!0;if(!(i=-1<n.indexOf("text/html"))&&(-1<n.indexOf("com.apple.webarchive")||-1<n.indexOf("com.apple.iWork.TSPNativeData")))return this.fallbackPasteCleanupDelayed(),!0}else 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t.focusNode.childNodes&&t.focusNode.childNodes[t.focusOffset-1]&&(n=t.focusNode.childNodes[t.focusOffset-1].nodeName.toLowerCase()),"sup"===i||"sup"===s||"sup"===n?e="superscript":"sub"!==i&&"sub"!==s&&"sub"!==n||(e="subscript"),e},_normaliseTextarea:function(){var e,t,i=window.rangy.saveSelection(),s=this._getEditorNode();for(this._removeSingleNodesByName(s,"br"),e=["p","b","i","u","ul","ol","li"],t=0;t<e.length;t++)this._removeNodesByName(s,e[t]);this._normaliseTagInTextarea("sup"),this._normaliseTagInTextarea("sub"),this._removeNodesByName(s,"span"),window.rangy.restoreSelection(i,!0),s.normalize()},_normaliseTagInTextarea:function(e){for(var 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a.M.editor_ousupsub.fire("editor_ousupsub:created",{id:e.get("elementid"),instance:e}),e},a.M.editor_ousupsub.getEditor=function(e){return M.editor_ousupsub._instances[e]},a.M.editor_ousupsub.removeEditor=function(e){var t=a.M.editor_ousupsub.getEditor(e);return t&&(t.destroy(),this.fire("editor_ousupsub:removed",{id:e})),a.M.editor_ousupsub},a.M.editor_ousupsub.removeEditorReference=function(e){a.M.editor_ousupsub.getEditor(e)&&delete M.editor_ousupsub._instances[e]},a.M.editor_ousupsub.addMethod=function(e,n){this[e],a.M.editor_ousupsub[e]=function(){var i=[],s=arguments;return a.Object.each(M.editor_ousupsub._instances,function(e){var 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