diff --git a/admin/tool/usertours/amd/build/tour.min.js b/admin/tool/usertours/amd/build/tour.min.js
index 290c399092b18..88b32638b64ab 100644
--- a/admin/tool/usertours/amd/build/tour.min.js
+++ b/admin/tool/usertours/amd/build/tour.min.js
@@ -1,3 +1,3 @@
-define("tool_usertours/tour",["exports","jquery","core/aria","core/popper","core/event_dispatcher","./events","core/str","core/prefetch","core/event"],(function(_exports,_jquery,Aria,_popper,_event_dispatcher,_events,_str,_prefetch,_event){function _getRequireWildcardCache(nodeInterop){if("function"!=typeof WeakMap)return null;var cacheBabelInterop=new WeakMap,cacheNodeInterop=new WeakMap;return(_getRequireWildcardCache=function(nodeInterop){return nodeInterop?cacheNodeInterop:cacheBabelInterop})(nodeInterop)}function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj}}Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.default=void 0,_jquery=_interopRequireDefault(_jquery),Aria=function(obj,nodeInterop){if(!nodeInterop&&obj&&obj.__esModule)return obj;if(null===obj||"object"!=typeof obj&&"function"!=typeof obj)return{default:obj};var cache=_getRequireWildcardCache(nodeInterop);if(cache&&cache.has(obj))return cache.get(obj);var newObj={},hasPropertyDescriptor=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var key in obj)if("default"!==key&&Object.prototype.hasOwnProperty.call(obj,key)){var desc=hasPropertyDescriptor?Object.getOwnPropertyDescriptor(obj,key):null;desc&&(desc.get||desc.set)?Object.defineProperty(newObj,key,desc):newObj[key]=obj[key]}newObj.default=obj,cache&&cache.set(obj,newObj);return newObj}(Aria),_popper=_interopRequireDefault(_popper);var _default=class{constructor(config){var obj,key,value;value=!1,(key="tourRunning")in(obj=this)?Object.defineProperty(obj,key,{value:value,enumerable:!0,configurable:!0,writable:!0}):obj[key]=value,this.init(config)}init(config){this.eventHandlers={},this.reset(),this.originalConfiguration=config||{},this.configure.apply(this,arguments),this.possitionNeedToBeRecalculated=!1,this.recalculatedNo=0;try{this.storage=window.sessionStorage,this.storageKey="tourstate_"+this.tourName}catch(e){this.storage=!1,this.storageKey=""}return(0,_prefetch.prefetchStrings)("tool_usertours",["nextstep_sequence","skip_tour"]),this}reset(){return this.hide(),this.eventHandlers=[],this.resetStepListeners(),this.originalConfiguration={},this.steps=[],this.currentStepNumber=0,this}configure(config){if("object"==typeof config){if(void 0!==config.tourName&&(this.tourName=config.tourName),config.eventHandlers)for(let eventName in config.eventHandlers)config.eventHandlers[eventName].forEach((function(handler){this.addEventHandler(eventName,handler)}),this);this.resetStepDefaults(!0),"object"==typeof config.steps&&(this.steps=config.steps),void 0!==config.template&&(this.templateContent=config.template)}return this.checkMinimumRequirements(),this}checkMinimumRequirements(){if(!this.tourName)throw new Error("Tour Name required");if(!this.steps||!this.steps.length)throw new Error("Steps must be specified")}resetStepDefaults(loadOriginalConfiguration){return void 0===loadOriginalConfiguration&&(loadOriginalConfiguration=!0),this.stepDefaults={},loadOriginalConfiguration&&void 0!==this.originalConfiguration.stepDefaults?this.setStepDefaults(this.originalConfiguration.stepDefaults):this.setStepDefaults({}),this}setStepDefaults(stepDefaults){return this.stepDefaults||(this.stepDefaults={}),_jquery.default.extend(this.stepDefaults,{element:"",placement:"top",delay:0,moveOnClick:!1,moveAfterTime:0,orphan:!1,direction:1},stepDefaults),this}getCurrentStepNumber(){return parseInt(this.currentStepNumber,10)}setCurrentStepNumber(stepNumber){if(this.currentStepNumber=stepNumber,this.storage)try{this.storage.setItem(this.storageKey,stepNumber)}catch(e){e.code===DOMException.QUOTA_EXCEEDED_ERR&&this.storage.removeItem(this.storageKey)}}getNextStepNumber(stepNumber){void 0===stepNumber&&(stepNumber=this.getCurrentStepNumber());let nextStepNumber=stepNumber+1;for(;nextStepNumber<=this.steps.length;){if(this.isStepPotentiallyVisible(this.getStepConfig(nextStepNumber)))return nextStepNumber;nextStepNumber++}return null}getPreviousStepNumber(stepNumber){void 0===stepNumber&&(stepNumber=this.getCurrentStepNumber());let previousStepNumber=stepNumber-1;for(;previousStepNumber>=0;){if(this.isStepPotentiallyVisible(this.getStepConfig(previousStepNumber)))return previousStepNumber;previousStepNumber--}return null}isLastStep(stepNumber){return null===this.getNextStepNumber(stepNumber)}isStepPotentiallyVisible(stepConfig){return!!stepConfig&&(!!this.isStepActuallyVisible(stepConfig)||(!(void 0===stepConfig.orphan||!stepConfig.orphan)||!(void 0===stepConfig.delay||!stepConfig.delay)))}getPotentiallyVisibleSteps(){let position=1,result=[];for(let stepNumber=0;stepNumber<this.steps.length;stepNumber++){const stepConfig=this.getStepConfig(stepNumber);this.isStepPotentiallyVisible(stepConfig)&&(result[stepNumber]={stepId:stepConfig.stepid,position:position},position++)}return result}isStepActuallyVisible(stepConfig){if(!stepConfig)return!1;if(!this.isCSSAllowed())return!1;let target=this.getStepTarget(stepConfig);return!!(target&&target.length&&target.is(":visible"))&&!!target.length}isCSSAllowed(){const testCSSElement=document.createElement("div");testCSSElement.classList.add("hide"),document.body.appendChild(testCSSElement);const isAllowed="none"===window.getComputedStyle(testCSSElement).display;return testCSSElement.remove(),isAllowed}next(){return this.gotoStep(this.getNextStepNumber())}previous(){return this.gotoStep(this.getPreviousStepNumber(),-1)}gotoStep(stepNumber,direction){if(stepNumber<0)return this.endTour();let stepConfig=this.getStepConfig(stepNumber);return null===stepConfig?this.endTour():this._gotoStep(stepConfig,direction)}_gotoStep(stepConfig,direction){if(!stepConfig)return this.endTour();if(void 0!==stepConfig.delay&&stepConfig.delay&&!stepConfig.delayed)return stepConfig.delayed=!0,window.setTimeout(this._gotoStep.bind(this),stepConfig.delay,stepConfig,direction),this;if(!stepConfig.orphan&&!this.isStepActuallyVisible(stepConfig)){let fn=-1==direction?"getPreviousStepNumber":"getNextStepNumber";return this.gotoStep(this[fn](stepConfig.stepNumber),direction)}this.hide();return this.dispatchEvent(_events.eventTypes.stepRender,{stepConfig:stepConfig},!0).defaultPrevented||(this.renderStep(stepConfig),this.dispatchEvent(_events.eventTypes.stepRendered,{stepConfig:stepConfig})),this}getStepConfig(stepNumber){if(null===stepNumber||stepNumber<0||stepNumber>=this.steps.length)return null;let stepConfig=this.normalizeStepConfig(this.steps[stepNumber]);return stepConfig=_jquery.default.extend(stepConfig,{stepNumber:stepNumber}),stepConfig}normalizeStepConfig(stepConfig){return void 0!==stepConfig.reflex&&void 0===stepConfig.moveAfterClick&&(stepConfig.moveAfterClick=stepConfig.reflex),void 0!==stepConfig.element&&void 0===stepConfig.target&&(stepConfig.target=stepConfig.element),void 0!==stepConfig.content&&void 0===stepConfig.body&&(stepConfig.body=stepConfig.content),stepConfig=_jquery.default.extend({},this.stepDefaults,stepConfig),(stepConfig=_jquery.default.extend({},{attachTo:stepConfig.target,attachPoint:"after"},stepConfig)).attachTo&&(stepConfig.attachTo=(0,_jquery.default)(stepConfig.attachTo).first()),stepConfig}getStepTarget(stepConfig){return stepConfig.target?(0,_jquery.default)(stepConfig.target):null}dispatchEvent(eventName){let detail=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},cancelable=arguments.length>2&&void 0!==arguments[2]&&arguments[2];return(0,_event_dispatcher.dispatchEvent)(eventName,{tour:this,...detail},document,{cancelable:cancelable})}addEventHandler(eventName,handler){return void 0===this.eventHandlers[eventName]&&(this.eventHandlers[eventName]=[]),this.eventHandlers[eventName].push(handler),this}processStepListeners(stepConfig){if(this.listeners.push({node:this.currentStepNode,args:["click",'[data-role="next"]',_jquery.default.proxy(this.next,this)]},{node:this.currentStepNode,args:["click",'[data-role="end"]',_jquery.default.proxy(this.endTour,this)]},{node:(0,_jquery.default)('[data-flexitour="backdrop"]'),args:["click",_jquery.default.proxy(this.hide,this)]},{node:(0,_jquery.default)("body"),args:["keydown",_jquery.default.proxy(this.handleKeyDown,this)]}),stepConfig.moveOnClick){var targetNode=this.getStepTarget(stepConfig);this.listeners.push({node:targetNode,args:["click",_jquery.default.proxy((function(e){0===(0,_jquery.default)(e.target).parents('[data-flexitour="container"]').length&&window.setTimeout(_jquery.default.proxy(this.next,this),500)}),this)]})}return this.listeners.forEach((function(listener){listener.node.on.apply(listener.node,listener.args)})),this}resetStepListeners(){return this.listeners&&this.listeners.forEach((function(listener){listener.node.off.apply(listener.node,listener.args)})),this.listeners=[],this}renderStep(stepConfig){this.currentStepConfig=stepConfig,this.setCurrentStepNumber(stepConfig.stepNumber);let template=(0,_jquery.default)(this.getTemplateContent());template.find('[data-placeholder="title"]').html(stepConfig.title),template.find('[data-placeholder="body"]').html(stepConfig.body);const nextBtn=template.find('[data-role="next"]'),endBtn=template.find('[data-role="end"]');if(this.isLastStep(stepConfig.stepNumber)?(nextBtn.hide(),endBtn.removeClass("btn-secondary").addClass("btn-primary")):(nextBtn.prop("disabled",!1),(0,_str.getString)("skip_tour","tool_usertours").then((value=>{endBtn.html(value)})).catch()),nextBtn.attr("role","button"),endBtn.attr("role","button"),this.originalConfiguration.displaystepnumbers){const stepsPotentiallyVisible=this.getPotentiallyVisibleSteps(),totalStepsPotentiallyVisible=stepsPotentiallyVisible.length,position=stepsPotentiallyVisible[stepConfig.stepNumber].position;totalStepsPotentiallyVisible>1&&(0,_str.getString)("nextstep_sequence","tool_usertours",{position:position,total:totalStepsPotentiallyVisible}).then((value=>{nextBtn.html(value)})).catch()}return stepConfig.template=template,this.addStepToPage(stepConfig),this.processStepListeners(stepConfig),this}getTemplateContent(){return(0,_jquery.default)(this.templateContent).clone()}addStepToPage(stepConfig){let currentStepNode=(0,_jquery.default)('<span data-flexitour="container"></span>').html(stepConfig.template).hide();(0,_event.notifyFilterContentUpdated)(currentStepNode);let animationTarget=(0,_jquery.default)("body, html").stop(!0,!0);if(this.isStepActuallyVisible(stepConfig)){let targetNode=this.getStepTarget(stepConfig);targetNode.parents('[data-usertour="scroller"]').length&&(animationTarget=targetNode.parents('[data-usertour="scroller"]')),targetNode.data("flexitour","target");let zIndex=this.calculateZIndex(targetNode);zIndex&&(stepConfig.zIndex=zIndex+1),stepConfig.zIndex&&currentStepNode.css("zIndex",stepConfig.zIndex+1),this.positionBackdrop(stepConfig),(0,_jquery.default)(document.body).append(currentStepNode),this.currentStepNode=currentStepNode,this.currentStepNode.css({top:0,left:0}),animationTarget.animate({scrollTop:this.calculateScrollTop(stepConfig)}).promise().then(function(){this.positionStep(stepConfig),this.revealStep(stepConfig)}.bind(this)).catch((function(){}))}else stepConfig.orphan&&(stepConfig.isOrphan=!0,stepConfig.attachTo=(0,_jquery.default)("body").first(),stepConfig.attachPoint="append",this.positionBackdrop(stepConfig),currentStepNode.addClass("orphan"),(0,_jquery.default)(document.body).append(currentStepNode),this.currentStepNode=currentStepNode,this.currentStepNode.css("position","fixed"),this.currentStepPopper=new _popper.default((0,_jquery.default)("body"),this.currentStepNode[0],{removeOnDestroy:!0,placement:stepConfig.placement+"-start",arrowElement:'[data-role="arrow"]',modifiers:{hide:{enabled:!1},applyStyle:{onLoad:null,enabled:!1}},onCreate:()=>{const images=this.currentStepNode.find("img");images.length&&images.on("load",(()=>{this.calculateStepPositionInPage(currentStepNode)})),this.calculateStepPositionInPage(currentStepNode)}}),this.revealStep(stepConfig));return this}revealStep(stepConfig){return this.currentStepNode.fadeIn("",_jquery.default.proxy((function(){this.announceStep(stepConfig),this.currentStepNode.focus(),window.setTimeout(_jquery.default.proxy((function(){this.currentStepNode&&this.currentStepNode.focus()}),this),100)}),this)),this}announceStep(stepConfig){let stepId="tour-step-"+this.tourName+"-"+stepConfig.stepNumber;this.currentStepNode.attr("id",stepId);let bodyRegion=this.currentStepNode.find('[data-placeholder="body"]').first();bodyRegion.attr("id",stepId+"-body"),bodyRegion.attr("role","document");let headerRegion=this.currentStepNode.find('[data-placeholder="title"]').first();headerRegion.attr("id",stepId+"-title"),headerRegion.attr("aria-labelledby",stepId+"-body"),this.currentStepNode.attr("role","dialog"),this.currentStepNode.attr("tabindex",0),this.currentStepNode.attr("aria-labelledby",stepId+"-title"),this.currentStepNode.attr("aria-describedby",stepId+"-body");let target=this.getStepTarget(stepConfig);return target&&(target.data("original-tabindex",target.attr("tabindex")),target.attr("tabindex")||target.attr("tabindex",0),target.data("original-describedby",target.attr("aria-describedby")).attr("aria-describedby",stepId+"-body")),this.accessibilityShow(stepConfig),this}handleKeyDown(e){let tabbableSelector="a[href], link[href], [draggable=true], [contenteditable=true], ";switch(tabbableSelector+=":input:enabled, [tabindex], button:enabled",e.keyCode){case 27:this.endTour();break;case 9:(function(){if(!this.currentStepConfig.hasBackdrop)return;let currentIndex,nextIndex,nextNode,focusRelevant,activeElement=(0,_jquery.default)(document.activeElement),stepTarget=this.getStepTarget(this.currentStepConfig),tabbableNodes=(0,_jquery.default)(tabbableSelector),dialogContainer=(0,_jquery.default)('span[data-flexitour="container"]');if(stepTarget&&(tabbableNodes=tabbableNodes.filter((function(index,element){return null!==stepTarget&&(stepTarget.has(element).length||dialogContainer.has(element).length||stepTarget.is(element)||dialogContainer.is(element))}))),tabbableNodes.each((function(index,element){return!activeElement.is(element)||(currentIndex=index,!1)})),null!=currentIndex){let direction=1;e.shiftKey&&(direction=-1),nextIndex=currentIndex;do{nextIndex+=direction,nextNode=(0,_jquery.default)(tabbableNodes[nextIndex])}while(nextNode.length&&nextNode.is(":disabled")||nextNode.is(":hidden"));nextNode.length?(focusRelevant=nextNode.closest(stepTarget).length,focusRelevant=focusRelevant||nextNode.closest(this.currentStepNode).length):focusRelevant=!1}focusRelevant?nextNode.focus():e.shiftKey?this.currentStepNode.find(tabbableSelector).last().focus():this.currentStepConfig.isOrphan?this.currentStepNode.focus():stepTarget.focus(),e.preventDefault()}).call(this)}}startTour(startAt){if(this.storage&&void 0===startAt){let storageStartValue=this.storage.getItem(this.storageKey);if(storageStartValue){let storageStartAt=parseInt(storageStartValue,10);storageStartAt<=this.steps.length&&(startAt=storageStartAt)}}void 0===startAt&&(startAt=this.getCurrentStepNumber());return this.dispatchEvent(_events.eventTypes.tourStart,{startAt:startAt},!0).defaultPrevented||(this.gotoStep(startAt),this.tourRunning=!0,this.dispatchEvent(_events.eventTypes.tourStarted,{startAt:startAt})),this}restartTour(){return this.startTour(0)}endTour(){if(this.dispatchEvent(_events.eventTypes.tourEnd,{},!0).defaultPrevented)return this;if(this.currentStepConfig){let previousTarget=this.getStepTarget(this.currentStepConfig);previousTarget&&(previousTarget.attr("tabindex")||previousTarget.attr("tabindex","-1"),previousTarget.first().focus())}return this.hide(!0),this.tourRunning=!1,this.dispatchEvent(_events.eventTypes.tourEnded),this}hide(transition){if(this.dispatchEvent(_events.eventTypes.stepHide,{},!0).defaultPrevented)return this;if(this.currentStepNode&&this.currentStepNode.length&&(this.currentStepNode.hide(),this.currentStepPopper&&this.currentStepPopper.destroy()),this.currentStepConfig){let target=this.getStepTarget(this.currentStepConfig);target&&(target.data("original-labelledby")&&target.attr("aria-labelledby",target.data("original-labelledby")),target.data("original-describedby")&&target.attr("aria-describedby",target.data("original-describedby")),target.data("original-tabindex")?target.attr("tabindex",target.data("tabindex")):window.setTimeout((()=>{target.removeAttr("tabindex")}),400)),this.currentStepConfig=null}let fadeTime=0;if(transition&&(fadeTime=400),(0,_jquery.default)('[data-flexitour="step-background"]').remove(),(0,_jquery.default)('[data-flexitour="step-backdrop"]').removeAttr("data-flexitour"),(0,_jquery.default)('[data-flexitour="backdrop"]').fadeOut(fadeTime,(function(){(0,_jquery.default)(this).remove()})),this.currentStepNode&&this.currentStepNode.length){let stepId=this.currentStepNode.attr("id");if(stepId){let currentStepElement='[aria-describedby="'+stepId+'-body"]';(0,_jquery.default)(currentStepElement).removeAttr("tabindex"),(0,_jquery.default)(currentStepElement).removeAttr("aria-describedby")}}return this.resetStepListeners(),this.accessibilityHide(),this.dispatchEvent(_events.eventTypes.stepHidden),this.currentStepNode=null,this.currentStepPopper=null,this}show(){let startAt=this.getCurrentStepNumber();return this.gotoStep(startAt)}getStepContainer(){return(0,_jquery.default)(this.currentStepNode)}calculateScrollTop(stepConfig){let viewportHeight=(0,_jquery.default)(window).height(),targetNode=this.getStepTarget(stepConfig),scrollParent=(0,_jquery.default)(window);targetNode.parents('[data-usertour="scroller"]').length&&(scrollParent=targetNode.parents('[data-usertour="scroller"]'));let scrollTop=scrollParent.scrollTop();return scrollTop="top"===stepConfig.placement?targetNode.offset().top-viewportHeight/2:"bottom"===stepConfig.placement?targetNode.offset().top+targetNode.height()+scrollTop-viewportHeight/2:targetNode.height()<=.8*viewportHeight?targetNode.offset().top-(viewportHeight-targetNode.height())/2:targetNode.offset().top-.2*viewportHeight,scrollTop=Math.max(0,scrollTop),scrollTop=Math.min((0,_jquery.default)(document).height()-viewportHeight,scrollTop),Math.ceil(scrollTop)}calculateStepPositionInPage(currentStepNode){let top=10;const viewportHeight=(0,_jquery.default)(window).height(),stepHeight=currentStepNode.height(),viewportWidth=(0,_jquery.default)(window).width(),stepWidth=currentStepNode.width();if(viewportHeight>=stepHeight+20)top=Math.ceil((viewportHeight-stepHeight)/2);else{var _currentStepNode$find,_currentStepNode$find2;const maxHeight=viewportHeight-20-(null!==(_currentStepNode$find=currentStepNode.find(".modal-header").first().outerHeight())&&void 0!==_currentStepNode$find?_currentStepNode$find:0)-(null!==(_currentStepNode$find2=currentStepNode.find(".modal-footer").first().outerHeight())&&void 0!==_currentStepNode$find2?_currentStepNode$find2:0);currentStepNode.find('[data-placeholder="body"]').first().css({"max-height":maxHeight+"px",overflow:"auto"})}currentStepNode.offset({top:top,left:Math.ceil((viewportWidth-stepWidth)/2)})}positionStep(stepConfig){let flipBehavior,content=this.currentStepNode,thisT=this;if(!content||!content.length)return this;switch(stepConfig.placement=this.recalculatePlacement(stepConfig),stepConfig.placement){case"left":flipBehavior=["left","right","top","bottom"];break;case"right":flipBehavior=["right","left","top","bottom"];break;case"top":flipBehavior=["top","bottom","right","left"];break;case"bottom":flipBehavior=["bottom","top","right","left"];break;default:flipBehavior="flip"}let target=this.getStepTarget(stepConfig);var config={placement:stepConfig.placement+"-start",removeOnDestroy:!0,modifiers:{flip:{behaviour:flipBehavior},arrow:{element:'[data-role="arrow"]'}},onCreate:function(data){recalculateArrowPosition(data),recalculateStepPosition(data)},onUpdate:function(data){recalculateArrowPosition(data),thisT.possitionNeedToBeRecalculated&&(thisT.recalculatedNo++,thisT.possitionNeedToBeRecalculated=!1,recalculateStepPosition(data))}};let recalculateArrowPosition=function(data){let placement=data.placement.split("-")[0];const isVertical=-1!==["left","right"].indexOf(placement),arrowElement=data.instance.popper.querySelector('[data-role="arrow"]'),stepElement=(0,_jquery.default)(data.instance.popper.querySelector('[data-role="flexitour-step"]'));if(isVertical){let arrowHeight=parseFloat(window.getComputedStyle(arrowElement).height),arrowOffset=parseFloat(window.getComputedStyle(arrowElement).top),popperHeight=parseFloat(window.getComputedStyle(data.instance.popper).height),popperOffset=parseFloat(window.getComputedStyle(data.instance.popper).top),popperBorderWidth=parseFloat(stepElement.css("borderTopWidth")),popperBorderRadiusWidth=2*parseFloat(stepElement.css("borderTopLeftRadius")),arrowPos=arrowOffset+arrowHeight/2,maxPos=popperHeight+popperOffset-popperBorderWidth-popperBorderRadiusWidth,minPos=popperOffset+popperBorderWidth+popperBorderRadiusWidth;if(arrowPos>=maxPos||arrowPos<=minPos){let newArrowPos=0;newArrowPos=arrowPos>popperHeight/2?maxPos-arrowHeight:minPos+arrowHeight,(0,_jquery.default)(arrowElement).css("top",newArrowPos)}}else{let arrowWidth=parseFloat(window.getComputedStyle(arrowElement).width),arrowOffset=parseFloat(window.getComputedStyle(arrowElement).left),popperWidth=parseFloat(window.getComputedStyle(data.instance.popper).width),popperOffset=parseFloat(window.getComputedStyle(data.instance.popper).left),popperBorderWidth=parseFloat(stepElement.css("borderTopWidth")),popperBorderRadiusWidth=2*parseFloat(stepElement.css("borderTopLeftRadius")),arrowPos=arrowOffset+arrowWidth/2,maxPos=popperWidth+popperOffset-popperBorderWidth-popperBorderRadiusWidth,minPos=popperOffset+popperBorderWidth+popperBorderRadiusWidth;if(arrowPos>=maxPos||arrowPos<=minPos){let newArrowPos=0;newArrowPos=arrowPos>popperWidth/2?maxPos-arrowWidth:minPos+arrowWidth,(0,_jquery.default)(arrowElement).css("left",newArrowPos)}}};const recalculateStepPosition=function(data){var _headerEle$outerHeigh,_footerEle$outerHeigh;const placement=data.placement.split("-")[0],isVertical=-1!==["left","right"].indexOf(placement),popperElement=(0,_jquery.default)(data.instance.popper),targetElement=(0,_jquery.default)(data.instance.reference),arrowElement=popperElement.find('[data-role="arrow"]'),stepElement=popperElement.find('[data-role="flexitour-step"]'),viewportHeight=(0,_jquery.default)(window).height(),viewportWidth=(0,_jquery.default)(window).width(),arrowHeight=parseFloat(arrowElement.outerHeight(!0)),popperHeight=parseFloat(popperElement.outerHeight(!0)),targetHeight=parseFloat(targetElement.outerHeight(!0)),arrowWidth=parseFloat(arrowElement.outerWidth(!0)),popperWidth=parseFloat(popperElement.outerWidth(!0)),targetWidth=parseFloat(targetElement.outerWidth(!0));let maxHeight;if(thisT.recalculatedNo>1&&(thisT.currentStepPopper.options.placement=isVertical?"auto-left":"auto-bottom"),thisT.recalculatedNo>2)return;if(isVertical){const leftSpace=targetElement.offset().left>0?targetElement.offset().left:0,rightSpace=viewportWidth-leftSpace-targetWidth,remainingSpace=leftSpace>=rightSpace?leftSpace:rightSpace;if(maxHeight=viewportHeight-20,remainingSpace<popperWidth+arrowWidth){const maxWidth=remainingSpace-10-arrowWidth;maxWidth>0&&(popperElement.css({"max-width":maxWidth+"px"}),thisT.possitionNeedToBeRecalculated=!0)}else maxHeight<popperHeight&&popperElement.css({"max-height":maxHeight+"px"})}else{const topSpace=targetElement.offset().top>0?targetElement.offset().top:0,bottomSpace=viewportHeight-topSpace-targetHeight,remainingSpace=topSpace>=bottomSpace?topSpace:bottomSpace;maxHeight=remainingSpace-10-arrowHeight,remainingSpace<popperHeight+arrowHeight&&(thisT.possitionNeedToBeRecalculated=!0)}const currentStepBody=stepElement.find('[data-placeholder="body"]').first(),headerEle=stepElement.find(".modal-header").first(),footerEle=stepElement.find(".modal-footer").first();maxHeight=maxHeight-(null!==(_headerEle$outerHeigh=headerEle.outerHeight(!0))&&void 0!==_headerEle$outerHeigh?_headerEle$outerHeigh:0)-(null!==(_footerEle$outerHeigh=footerEle.outerHeight(!0))&&void 0!==_footerEle$outerHeigh?_footerEle$outerHeigh:0),maxHeight>0?(headerEle.removeClass("minimal"),footerEle.removeClass("minimal"),currentStepBody.css({"max-height":maxHeight+"px",overflow:"auto"})):(headerEle.addClass("minimal"),footerEle.addClass("minimal")),thisT.currentStepPopper.update()};let background=(0,_jquery.default)('[data-flexitour="step-background"]');return background.length&&(target=background),this.currentStepPopper=new _popper.default(target,content[0],config),this}recalculatePlacement(stepConfig){let target=this.getStepTarget(stepConfig),widthContent=this.currentStepNode.width()+16,targetOffsetLeft=target.offset().left-10,targetOffsetRight=target.offset().left+target.width()+10,placement=stepConfig.placement;return-1!==["left","right"].indexOf(placement)&&targetOffsetLeft<widthContent+10&&targetOffsetRight+widthContent+10>document.documentElement.clientWidth&&(placement="top"),placement}positionBackdrop(stepConfig){if(stepConfig.backdrop){this.currentStepConfig.hasBackdrop=!0;let backdrop=(0,_jquery.default)('<div data-flexitour="backdrop"></div>');if(stepConfig.zIndex?"append"===stepConfig.attachPoint?stepConfig.attachTo.append(backdrop):backdrop.insertAfter(stepConfig.attachTo):(0,_jquery.default)("body").append(backdrop),this.isStepActuallyVisible(stepConfig)){let background=(0,_jquery.default)('[data-flexitour="step-background"]');background.length||(background=(0,_jquery.default)('<div data-flexitour="step-background"></div>'));let targetNode=this.getStepTarget(stepConfig),buffer=10,colorNode=targetNode;buffer&&(colorNode=(0,_jquery.default)("body"));let drawertop=0;if(targetNode.parents('[data-usertour="scroller"]').length){const scrollerElement=targetNode.parents('[data-usertour="scroller"]'),navigationBuffer=scrollerElement.offset().top;scrollerElement.scrollTop()>=navigationBuffer&&(drawertop=scrollerElement.scrollTop()-navigationBuffer,background.css({position:"fixed"}))}background.css({width:targetNode.outerWidth()+buffer+buffer,height:targetNode.outerHeight()+buffer+buffer,left:targetNode.offset().left-buffer,top:targetNode.offset().top+drawertop-buffer,backgroundColor:this.calculateInherittedBackgroundColor(colorNode)}),targetNode.offset().left<buffer&&background.css({width:targetNode.outerWidth()+targetNode.offset().left+buffer,left:targetNode.offset().left}),targetNode.offset().top+drawertop<buffer&&background.css({height:targetNode.outerHeight()+targetNode.offset().top+buffer,top:targetNode.offset().top});let targetRadius=targetNode.css("borderRadius");targetRadius&&targetRadius!==(0,_jquery.default)("body").css("borderRadius")&&background.css("borderRadius",targetRadius),"absolute"===this.calculatePosition(targetNode)&&background.css("position","fixed");let fader=background.clone();if(fader.css({backgroundColor:backdrop.css("backgroundColor"),opacity:backdrop.css("opacity")}),fader.attr("data-flexitour","step-background-fader"),targetNode.parents('[data-region="fixed-drawer"]').length||!stepConfig.zIndex){let targetClone=targetNode.clone();background.append(targetClone.first()),(0,_jquery.default)("body").append(fader),(0,_jquery.default)("body").append(background)}else"append"===stepConfig.attachPoint?stepConfig.attachTo.append(background):(fader.insertAfter(stepConfig.attachTo),background.insertAfter(stepConfig.attachTo));targetNode.attr("data-flexitour","step-backdrop"),stepConfig.zIndex&&(backdrop.css("zIndex",stepConfig.zIndex),background.css("zIndex",stepConfig.zIndex+1),targetNode.css("zIndex",stepConfig.zIndex+2)),fader.fadeOut("2000",(function(){(0,_jquery.default)(this).remove()}))}}return this}calculateZIndex(elem){for(elem=(0,_jquery.default)(elem);elem.length&&elem[0]!==document;){let position=elem.css("position");if("absolute"===position||"fixed"===position){let value=parseInt(elem.css("zIndex"),10);if(!isNaN(value)&&0!==value)return value}elem=elem.parent()}return 0}calculateInherittedBackgroundColor(elem){let fakeNode=(0,_jquery.default)("<div>").hide();(0,_jquery.default)("body").append(fakeNode);let fakeElemColor=fakeNode.css("backgroundColor");for(fakeNode.remove(),elem=(0,_jquery.default)(elem);elem.length&&elem[0]!==document;){let color=elem.css("backgroundColor");if(color!==fakeElemColor)return color;elem=elem.parent()}return null}calculatePosition(elem){for(elem=(0,_jquery.default)(elem);elem.length&&elem[0]!==document;){let position=elem.css("position");if("static"!==position)return position;elem=elem.parent()}return null}accessibilityShow(){let hideFunction=function(child){let flexitourRole=child.data("flexitour");if(flexitourRole)switch(flexitourRole){case"container":case"target":return}child.attr("aria-hidden")||(child.attr("data-has-hidden",!0),Aria.hide(child))};this.currentStepNode.siblings().each((function(index,node){hideFunction((0,_jquery.default)(node))})),this.currentStepNode.parentsUntil("body").siblings().each((function(index,node){hideFunction((0,_jquery.default)(node))}))}accessibilityHide(){(0,_jquery.default)("[data-has-hidden]").each((function(index,node){var child;void 0!==(child=(0,_jquery.default)(node)).attr("data-has-hidden")&&(child.removeAttr("data-has-hidden"),Aria.unhide(child))}))}};return _exports.default=_default,_exports.default}));
+define("tool_usertours/tour",["exports","jquery","core/aria","core/popper","core/event_dispatcher","./events","core/str","core/prefetch","core/event"],(function(_exports,_jquery,Aria,_popper,_event_dispatcher,_events,_str,_prefetch,_event){function _getRequireWildcardCache(nodeInterop){if("function"!=typeof WeakMap)return null;var cacheBabelInterop=new WeakMap,cacheNodeInterop=new WeakMap;return(_getRequireWildcardCache=function(nodeInterop){return nodeInterop?cacheNodeInterop:cacheBabelInterop})(nodeInterop)}function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj}}Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.default=void 0,_jquery=_interopRequireDefault(_jquery),Aria=function(obj,nodeInterop){if(!nodeInterop&&obj&&obj.__esModule)return obj;if(null===obj||"object"!=typeof obj&&"function"!=typeof obj)return{default:obj};var cache=_getRequireWildcardCache(nodeInterop);if(cache&&cache.has(obj))return cache.get(obj);var newObj={},hasPropertyDescriptor=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var key in obj)if("default"!==key&&Object.prototype.hasOwnProperty.call(obj,key)){var desc=hasPropertyDescriptor?Object.getOwnPropertyDescriptor(obj,key):null;desc&&(desc.get||desc.set)?Object.defineProperty(newObj,key,desc):newObj[key]=obj[key]}newObj.default=obj,cache&&cache.set(obj,newObj);return newObj}(Aria),_popper=_interopRequireDefault(_popper);var _default=class{constructor(config){var obj,key,value;value=!1,(key="tourRunning")in(obj=this)?Object.defineProperty(obj,key,{value:value,enumerable:!0,configurable:!0,writable:!0}):obj[key]=value,this.init(config)}init(config){this.eventHandlers={},this.reset(),this.originalConfiguration=config||{},this.configure.apply(this,arguments),this.possitionNeedToBeRecalculated=!1,this.recalculatedNo=0;try{this.storage=window.sessionStorage,this.storageKey="tourstate_"+this.tourName}catch(e){this.storage=!1,this.storageKey=""}return(0,_prefetch.prefetchStrings)("tool_usertours",["nextstep_sequence","skip_tour"]),this}reset(){return this.hide(),this.eventHandlers=[],this.resetStepListeners(),this.originalConfiguration={},this.steps=[],this.currentStepNumber=0,this}configure(config){if("object"==typeof config){if(void 0!==config.tourName&&(this.tourName=config.tourName),config.eventHandlers)for(let eventName in config.eventHandlers)config.eventHandlers[eventName].forEach((function(handler){this.addEventHandler(eventName,handler)}),this);this.resetStepDefaults(!0),"object"==typeof config.steps&&(this.steps=config.steps),void 0!==config.template&&(this.templateContent=config.template)}return this.checkMinimumRequirements(),this}checkMinimumRequirements(){if(!this.tourName)throw new Error("Tour Name required");if(!this.steps||!this.steps.length)throw new Error("Steps must be specified")}resetStepDefaults(loadOriginalConfiguration){return void 0===loadOriginalConfiguration&&(loadOriginalConfiguration=!0),this.stepDefaults={},loadOriginalConfiguration&&void 0!==this.originalConfiguration.stepDefaults?this.setStepDefaults(this.originalConfiguration.stepDefaults):this.setStepDefaults({}),this}setStepDefaults(stepDefaults){return this.stepDefaults||(this.stepDefaults={}),_jquery.default.extend(this.stepDefaults,{element:"",placement:"top",delay:0,moveOnClick:!1,moveAfterTime:0,orphan:!1,direction:1},stepDefaults),this}getCurrentStepNumber(){return parseInt(this.currentStepNumber,10)}setCurrentStepNumber(stepNumber){if(this.currentStepNumber=stepNumber,this.storage)try{this.storage.setItem(this.storageKey,stepNumber)}catch(e){e.code===DOMException.QUOTA_EXCEEDED_ERR&&this.storage.removeItem(this.storageKey)}}getNextStepNumber(stepNumber){void 0===stepNumber&&(stepNumber=this.getCurrentStepNumber());let nextStepNumber=stepNumber+1;for(;nextStepNumber<=this.steps.length;){if(this.isStepPotentiallyVisible(this.getStepConfig(nextStepNumber)))return nextStepNumber;nextStepNumber++}return null}getPreviousStepNumber(stepNumber){void 0===stepNumber&&(stepNumber=this.getCurrentStepNumber());let previousStepNumber=stepNumber-1;for(;previousStepNumber>=0;){if(this.isStepPotentiallyVisible(this.getStepConfig(previousStepNumber)))return previousStepNumber;previousStepNumber--}return null}isLastStep(stepNumber){return null===this.getNextStepNumber(stepNumber)}isStepPotentiallyVisible(stepConfig){return!!stepConfig&&(!!this.isStepActuallyVisible(stepConfig)||(!(void 0===stepConfig.orphan||!stepConfig.orphan)||!(void 0===stepConfig.delay||!stepConfig.delay)))}getPotentiallyVisibleSteps(){let position=1,result=[];for(let stepNumber=0;stepNumber<this.steps.length;stepNumber++){const stepConfig=this.getStepConfig(stepNumber);this.isStepPotentiallyVisible(stepConfig)&&(result[stepNumber]={stepId:stepConfig.stepid,position:position},position++)}return result}isStepActuallyVisible(stepConfig){if(!stepConfig)return!1;if(!this.isCSSAllowed())return!1;let target=this.getStepTarget(stepConfig);return!!(target&&target.length&&target.is(":visible"))&&!!target.length}isCSSAllowed(){const testCSSElement=document.createElement("div");testCSSElement.classList.add("hide"),document.body.appendChild(testCSSElement);const isAllowed="none"===window.getComputedStyle(testCSSElement).display;return testCSSElement.remove(),isAllowed}next(){return this.gotoStep(this.getNextStepNumber())}previous(){return this.gotoStep(this.getPreviousStepNumber(),-1)}gotoStep(stepNumber,direction){if(stepNumber<0)return this.endTour();let stepConfig=this.getStepConfig(stepNumber);return null===stepConfig?this.endTour():this._gotoStep(stepConfig,direction)}_gotoStep(stepConfig,direction){if(!stepConfig)return this.endTour();if(void 0!==stepConfig.delay&&stepConfig.delay&&!stepConfig.delayed)return stepConfig.delayed=!0,window.setTimeout(this._gotoStep.bind(this),stepConfig.delay,stepConfig,direction),this;if(!stepConfig.orphan&&!this.isStepActuallyVisible(stepConfig)){let fn=-1==direction?"getPreviousStepNumber":"getNextStepNumber";return this.gotoStep(this[fn](stepConfig.stepNumber),direction)}this.hide();return this.dispatchEvent(_events.eventTypes.stepRender,{stepConfig:stepConfig},!0).defaultPrevented||(this.renderStep(stepConfig),this.dispatchEvent(_events.eventTypes.stepRendered,{stepConfig:stepConfig})),this}getStepConfig(stepNumber){if(null===stepNumber||stepNumber<0||stepNumber>=this.steps.length)return null;let stepConfig=this.normalizeStepConfig(this.steps[stepNumber]);return stepConfig=_jquery.default.extend(stepConfig,{stepNumber:stepNumber}),stepConfig}normalizeStepConfig(stepConfig){return void 0!==stepConfig.reflex&&void 0===stepConfig.moveAfterClick&&(stepConfig.moveAfterClick=stepConfig.reflex),void 0!==stepConfig.element&&void 0===stepConfig.target&&(stepConfig.target=stepConfig.element),void 0!==stepConfig.content&&void 0===stepConfig.body&&(stepConfig.body=stepConfig.content),stepConfig=_jquery.default.extend({},this.stepDefaults,stepConfig),(stepConfig=_jquery.default.extend({},{attachTo:stepConfig.target,attachPoint:"after"},stepConfig)).attachTo&&(stepConfig.attachTo=(0,_jquery.default)(stepConfig.attachTo).first()),stepConfig}getStepTarget(stepConfig){return stepConfig.target?(0,_jquery.default)(stepConfig.target):null}dispatchEvent(eventName){let detail=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},cancelable=arguments.length>2&&void 0!==arguments[2]&&arguments[2];return(0,_event_dispatcher.dispatchEvent)(eventName,{tour:this,...detail},document,{cancelable:cancelable})}addEventHandler(eventName,handler){return void 0===this.eventHandlers[eventName]&&(this.eventHandlers[eventName]=[]),this.eventHandlers[eventName].push(handler),this}processStepListeners(stepConfig){if(this.listeners.push({node:this.currentStepNode,args:["click",'[data-role="next"]',_jquery.default.proxy(this.next,this)]},{node:this.currentStepNode,args:["click",'[data-role="end"]',_jquery.default.proxy(this.endTour,this)]},{node:(0,_jquery.default)('[data-flexitour="backdrop"]'),args:["click",_jquery.default.proxy(this.hide,this)]},{node:(0,_jquery.default)("body"),args:["keydown",_jquery.default.proxy(this.handleKeyDown,this)]}),stepConfig.moveOnClick){var targetNode=this.getStepTarget(stepConfig);this.listeners.push({node:targetNode,args:["click",_jquery.default.proxy((function(e){0===(0,_jquery.default)(e.target).parents('[data-flexitour="container"]').length&&window.setTimeout(_jquery.default.proxy(this.next,this),500)}),this)]})}return this.listeners.forEach((function(listener){listener.node.on.apply(listener.node,listener.args)})),this}resetStepListeners(){return this.listeners&&this.listeners.forEach((function(listener){listener.node.off.apply(listener.node,listener.args)})),this.listeners=[],this}renderStep(stepConfig){this.currentStepConfig=stepConfig,this.setCurrentStepNumber(stepConfig.stepNumber);let template=(0,_jquery.default)(this.getTemplateContent());template.find('[data-placeholder="title"]').html(stepConfig.title),template.find('[data-placeholder="body"]').html(stepConfig.body);const nextBtn=template.find('[data-role="next"]'),endBtn=template.find('[data-role="end"]');if(this.isLastStep(stepConfig.stepNumber)?(nextBtn.hide(),endBtn.removeClass("btn-secondary").addClass("btn-primary")):(nextBtn.prop("disabled",!1),(0,_str.getString)("skip_tour","tool_usertours").then((value=>{endBtn.html(value)})).catch()),nextBtn.attr("role","button"),endBtn.attr("role","button"),this.originalConfiguration.displaystepnumbers){const stepsPotentiallyVisible=this.getPotentiallyVisibleSteps(),totalStepsPotentiallyVisible=stepsPotentiallyVisible.length,position=stepsPotentiallyVisible[stepConfig.stepNumber].position;totalStepsPotentiallyVisible>1&&(0,_str.getString)("nextstep_sequence","tool_usertours",{position:position,total:totalStepsPotentiallyVisible}).then((value=>{nextBtn.html(value)})).catch()}return stepConfig.template=template,this.addStepToPage(stepConfig),this.processStepListeners(stepConfig),this}getTemplateContent(){return(0,_jquery.default)(this.templateContent).clone()}addStepToPage(stepConfig){let currentStepNode=(0,_jquery.default)('<span data-flexitour="container"></span>').html(stepConfig.template).hide();(0,_event.notifyFilterContentUpdated)(currentStepNode);let animationTarget=(0,_jquery.default)("body, html").stop(!0,!0);if(this.isStepActuallyVisible(stepConfig)){let targetNode=this.getStepTarget(stepConfig);targetNode.parents('[data-usertour="scroller"]').length&&(animationTarget=targetNode.parents('[data-usertour="scroller"]')),targetNode.data("flexitour","target");let zIndex=this.calculateZIndex(targetNode);zIndex&&(stepConfig.zIndex=zIndex+1),stepConfig.zIndex&&currentStepNode.css("zIndex",stepConfig.zIndex+1),this.positionBackdrop(stepConfig),(0,_jquery.default)(document.body).append(currentStepNode),this.currentStepNode=currentStepNode,this.currentStepNode.css({top:0,left:0}),animationTarget.animate({scrollTop:this.calculateScrollTop(stepConfig)}).promise().then(function(){this.positionStep(stepConfig),this.revealStep(stepConfig)}.bind(this)).catch((function(){}))}else stepConfig.orphan&&(stepConfig.isOrphan=!0,stepConfig.attachTo=(0,_jquery.default)("body").first(),stepConfig.attachPoint="append",this.positionBackdrop(stepConfig),currentStepNode.addClass("orphan"),(0,_jquery.default)(document.body).append(currentStepNode),this.currentStepNode=currentStepNode,this.currentStepNode.css("position","fixed"),this.currentStepPopper=new _popper.default((0,_jquery.default)("body"),this.currentStepNode[0],{removeOnDestroy:!0,placement:stepConfig.placement+"-start",arrowElement:'[data-role="arrow"]',modifiers:{hide:{enabled:!1},applyStyle:{onLoad:null,enabled:!1}},onCreate:()=>{const images=this.currentStepNode.find("img");images.length&&images.on("load",(()=>{this.calculateStepPositionInPage(currentStepNode)})),this.calculateStepPositionInPage(currentStepNode)}}),this.revealStep(stepConfig));return this}revealStep(stepConfig){return this.currentStepNode.fadeIn("",_jquery.default.proxy((function(){this.announceStep(stepConfig),this.currentStepNode.focus(),window.setTimeout(_jquery.default.proxy((function(){this.currentStepNode&&this.currentStepNode.focus()}),this),100)}),this)),this}announceStep(stepConfig){let stepId="tour-step-"+this.tourName+"-"+stepConfig.stepNumber;this.currentStepNode.attr("id",stepId);let bodyRegion=this.currentStepNode.find('[data-placeholder="body"]').first();bodyRegion.attr("id",stepId+"-body"),bodyRegion.attr("role","document");let headerRegion=this.currentStepNode.find('[data-placeholder="title"]').first();headerRegion.attr("id",stepId+"-title"),headerRegion.attr("aria-labelledby",stepId+"-body"),this.currentStepNode.attr("role","dialog"),this.currentStepNode.attr("tabindex",0),this.currentStepNode.attr("aria-labelledby",stepId+"-title"),this.currentStepNode.attr("aria-describedby",stepId+"-body");let target=this.getStepTarget(stepConfig);return target&&(target.data("original-tabindex",target.attr("tabindex")),target.attr("tabindex")||target.attr("tabindex",0),target.data("original-describedby",target.attr("aria-describedby")).attr("aria-describedby",stepId+"-body")),this.accessibilityShow(stepConfig),this}handleKeyDown(e){let tabbableSelector="a[href], link[href], [draggable=true], [contenteditable=true], ";switch(tabbableSelector+=":input:enabled, [tabindex], button:enabled",e.keyCode){case 27:this.endTour();break;case 9:(function(){if(!this.currentStepConfig.hasBackdrop)return;let currentIndex,nextIndex,nextNode,focusRelevant,activeElement=(0,_jquery.default)(document.activeElement),stepTarget=this.getStepTarget(this.currentStepConfig),tabbableNodes=(0,_jquery.default)(tabbableSelector),dialogContainer=(0,_jquery.default)('span[data-flexitour="container"]');if(stepTarget&&(tabbableNodes=tabbableNodes.filter((function(index,element){return null!==stepTarget&&(stepTarget.has(element).length||dialogContainer.has(element).length||stepTarget.is(element)||dialogContainer.is(element))}))),tabbableNodes.each((function(index,element){return!activeElement.is(element)||(currentIndex=index,!1)})),null!=currentIndex){let direction=1;e.shiftKey&&(direction=-1),nextIndex=currentIndex;do{nextIndex+=direction,nextNode=(0,_jquery.default)(tabbableNodes[nextIndex])}while(nextNode.length&&nextNode.is(":disabled")||nextNode.is(":hidden"));nextNode.length?(focusRelevant=nextNode.closest(stepTarget).length,focusRelevant=focusRelevant||nextNode.closest(this.currentStepNode).length):focusRelevant=!1}focusRelevant?nextNode.focus():e.shiftKey?this.currentStepNode.find(tabbableSelector).last().focus():this.currentStepConfig.isOrphan?this.currentStepNode.focus():stepTarget.focus(),e.preventDefault()}).call(this)}}startTour(startAt){if(this.storage&&void 0===startAt){let storageStartValue=this.storage.getItem(this.storageKey);if(storageStartValue){let storageStartAt=parseInt(storageStartValue,10);storageStartAt<=this.steps.length&&(startAt=storageStartAt)}}void 0===startAt&&(startAt=this.getCurrentStepNumber());return this.dispatchEvent(_events.eventTypes.tourStart,{startAt:startAt},!0).defaultPrevented||(this.gotoStep(startAt),this.tourRunning=!0,this.dispatchEvent(_events.eventTypes.tourStarted,{startAt:startAt})),this}restartTour(){return this.startTour(0)}endTour(){if(this.dispatchEvent(_events.eventTypes.tourEnd,{},!0).defaultPrevented)return this;if(this.currentStepConfig){let previousTarget=this.getStepTarget(this.currentStepConfig);previousTarget&&(previousTarget.attr("tabindex")||previousTarget.attr("tabindex","-1"),previousTarget.first().focus())}return this.hide(!0),this.tourRunning=!1,this.dispatchEvent(_events.eventTypes.tourEnded),this}hide(transition){if(this.dispatchEvent(_events.eventTypes.stepHide,{},!0).defaultPrevented)return this;if(this.currentStepNode&&this.currentStepNode.length&&(this.currentStepNode.hide(),this.currentStepPopper&&this.currentStepPopper.destroy()),this.currentStepConfig){let target=this.getStepTarget(this.currentStepConfig);target&&(target.data("original-labelledby")&&target.attr("aria-labelledby",target.data("original-labelledby")),target.data("original-describedby")&&target.attr("aria-describedby",target.data("original-describedby")),target.data("original-tabindex")?target.attr("tabindex",target.data("tabindex")):window.setTimeout((()=>{target.removeAttr("tabindex")}),400)),this.currentStepConfig=null}let fadeTime=0;if(transition&&(fadeTime=400),(0,_jquery.default)('[data-flexitour="step-background"]').remove(),(0,_jquery.default)('[data-flexitour="step-backdrop"]').removeAttr("data-flexitour"),(0,_jquery.default)('[data-flexitour="backdrop"]').fadeOut(fadeTime,(function(){(0,_jquery.default)(this).remove()})),this.currentStepNode&&this.currentStepNode.length){let stepId=this.currentStepNode.attr("id");if(stepId){let currentStepElement='[aria-describedby="'+stepId+'-body"]';(0,_jquery.default)(currentStepElement).removeAttr("tabindex"),(0,_jquery.default)(currentStepElement).removeAttr("aria-describedby")}}return this.resetStepListeners(),this.accessibilityHide(),this.dispatchEvent(_events.eventTypes.stepHidden),this.currentStepNode=null,this.currentStepPopper=null,this}show(){let startAt=this.getCurrentStepNumber();return this.gotoStep(startAt)}getStepContainer(){return(0,_jquery.default)(this.currentStepNode)}calculateScrollTop(stepConfig){let viewportHeight=(0,_jquery.default)(window).height(),targetNode=this.getStepTarget(stepConfig),scrollParent=(0,_jquery.default)(window);targetNode.parents('[data-usertour="scroller"]').length&&(scrollParent=targetNode.parents('[data-usertour="scroller"]'));let scrollTop=scrollParent.scrollTop();return scrollTop="top"===stepConfig.placement?targetNode.offset().top-viewportHeight/2:"bottom"===stepConfig.placement?targetNode.offset().top+targetNode.height()+scrollTop-viewportHeight/2:targetNode.height()<=.8*viewportHeight?targetNode.offset().top-(viewportHeight-targetNode.height())/2:targetNode.offset().top-.2*viewportHeight,scrollTop=Math.max(0,scrollTop),scrollTop=Math.min((0,_jquery.default)(document).height()-viewportHeight,scrollTop),Math.ceil(scrollTop)}calculateStepPositionInPage(currentStepNode){let top=10;const viewportHeight=(0,_jquery.default)(window).height(),stepHeight=currentStepNode.height(),viewportWidth=(0,_jquery.default)(window).width(),stepWidth=currentStepNode.width();if(viewportHeight>=stepHeight+20)top=Math.ceil((viewportHeight-stepHeight)/2);else{var _currentStepNode$find,_currentStepNode$find2;const maxHeight=viewportHeight-20-(null!==(_currentStepNode$find=currentStepNode.find(".modal-header").first().outerHeight())&&void 0!==_currentStepNode$find?_currentStepNode$find:0)-(null!==(_currentStepNode$find2=currentStepNode.find(".modal-footer").first().outerHeight())&&void 0!==_currentStepNode$find2?_currentStepNode$find2:0);currentStepNode.find('[data-placeholder="body"]').first().css({"max-height":maxHeight+"px",overflow:"auto"})}currentStepNode.offset({top:top,left:Math.ceil((viewportWidth-stepWidth)/2)})}positionStep(stepConfig){let flipBehavior,content=this.currentStepNode,thisT=this;if(!content||!content.length)return this;switch(stepConfig.placement=this.recalculatePlacement(stepConfig),stepConfig.placement){case"left":flipBehavior=["left","right","top","bottom"];break;case"right":flipBehavior=["right","left","top","bottom"];break;case"top":flipBehavior=["top","bottom","right","left"];break;case"bottom":flipBehavior=["bottom","top","right","left"];break;default:flipBehavior="flip"}let target=this.getStepTarget(stepConfig);var config={placement:stepConfig.placement+"-start",removeOnDestroy:!0,modifiers:{flip:{behaviour:flipBehavior},arrow:{element:'[data-role="arrow"]'}},onCreate:function(data){recalculateArrowPosition(data),recalculateStepPosition(data)},onUpdate:function(data){recalculateArrowPosition(data),thisT.possitionNeedToBeRecalculated&&(thisT.recalculatedNo++,thisT.possitionNeedToBeRecalculated=!1,recalculateStepPosition(data))}};let recalculateArrowPosition=function(data){let placement=data.placement.split("-")[0];const isVertical=-1!==["left","right"].indexOf(placement),arrowElement=data.instance.popper.querySelector('[data-role="arrow"]'),stepElement=(0,_jquery.default)(data.instance.popper.querySelector('[data-role="flexitour-step"]'));if(isVertical){let arrowHeight=parseFloat(window.getComputedStyle(arrowElement).height),arrowOffset=parseFloat(window.getComputedStyle(arrowElement).top),popperHeight=parseFloat(window.getComputedStyle(data.instance.popper).height),popperOffset=parseFloat(window.getComputedStyle(data.instance.popper).top),popperBorderWidth=parseFloat(stepElement.css("borderTopWidth")),popperBorderRadiusWidth=2*parseFloat(stepElement.css("borderTopLeftRadius")),arrowPos=arrowOffset+arrowHeight/2,maxPos=popperHeight+popperOffset-popperBorderWidth-popperBorderRadiusWidth,minPos=popperOffset+popperBorderWidth+popperBorderRadiusWidth;if(arrowPos>=maxPos||arrowPos<=minPos){let newArrowPos=0;newArrowPos=arrowPos>popperHeight/2?maxPos-arrowHeight:minPos+arrowHeight,(0,_jquery.default)(arrowElement).css("top",newArrowPos)}}else{let arrowWidth=parseFloat(window.getComputedStyle(arrowElement).width),arrowOffset=parseFloat(window.getComputedStyle(arrowElement).left),popperWidth=parseFloat(window.getComputedStyle(data.instance.popper).width),popperOffset=parseFloat(window.getComputedStyle(data.instance.popper).left),popperBorderWidth=parseFloat(stepElement.css("borderTopWidth")),popperBorderRadiusWidth=2*parseFloat(stepElement.css("borderTopLeftRadius")),arrowPos=arrowOffset+arrowWidth/2,maxPos=popperWidth+popperOffset-popperBorderWidth-popperBorderRadiusWidth,minPos=popperOffset+popperBorderWidth+popperBorderRadiusWidth;if(arrowPos>=maxPos||arrowPos<=minPos){let newArrowPos=0;newArrowPos=arrowPos>popperWidth/2?maxPos-arrowWidth:minPos+arrowWidth,(0,_jquery.default)(arrowElement).css("left",newArrowPos)}}};const recalculateStepPosition=function(data){var _headerEle$outerHeigh,_footerEle$outerHeigh;const placement=data.placement.split("-")[0],isVertical=-1!==["left","right"].indexOf(placement),popperElement=(0,_jquery.default)(data.instance.popper),targetElement=(0,_jquery.default)(data.instance.reference),arrowElement=popperElement.find('[data-role="arrow"]'),stepElement=popperElement.find('[data-role="flexitour-step"]'),viewportHeight=(0,_jquery.default)(window).height(),viewportWidth=(0,_jquery.default)(window).width(),arrowHeight=parseFloat(arrowElement.outerHeight(!0)),popperHeight=parseFloat(popperElement.outerHeight(!0)),targetHeight=parseFloat(targetElement.outerHeight(!0)),arrowWidth=parseFloat(arrowElement.outerWidth(!0)),popperWidth=parseFloat(popperElement.outerWidth(!0)),targetWidth=parseFloat(targetElement.outerWidth(!0));let maxHeight;if(thisT.recalculatedNo>1&&(thisT.currentStepPopper.options.placement=isVertical?"auto-left":"auto-bottom"),thisT.recalculatedNo>2)return;if(isVertical){const leftSpace=targetElement.offset().left>0?targetElement.offset().left:0,rightSpace=viewportWidth-leftSpace-targetWidth,remainingSpace=leftSpace>=rightSpace?leftSpace:rightSpace;if(maxHeight=viewportHeight-20,remainingSpace<popperWidth+arrowWidth){const maxWidth=remainingSpace-10-arrowWidth;maxWidth>0&&(popperElement.css({"max-width":maxWidth+"px"}),thisT.possitionNeedToBeRecalculated=!0)}else maxHeight<popperHeight&&popperElement.css({"max-height":maxHeight+"px"})}else{const topSpace=targetElement.offset().top>0?targetElement.offset().top:0,bottomSpace=viewportHeight-topSpace-targetHeight,remainingSpace=topSpace>=bottomSpace?topSpace:bottomSpace;maxHeight=remainingSpace-10-arrowHeight,remainingSpace<popperHeight+arrowHeight&&(thisT.possitionNeedToBeRecalculated=!0)}const currentStepBody=stepElement.find('[data-placeholder="body"]').first(),headerEle=stepElement.find(".modal-header").first(),footerEle=stepElement.find(".modal-footer").first();maxHeight=maxHeight-(null!==(_headerEle$outerHeigh=headerEle.outerHeight(!0))&&void 0!==_headerEle$outerHeigh?_headerEle$outerHeigh:0)-(null!==(_footerEle$outerHeigh=footerEle.outerHeight(!0))&&void 0!==_footerEle$outerHeigh?_footerEle$outerHeigh:0),maxHeight>0?(headerEle.removeClass("minimal"),footerEle.removeClass("minimal"),currentStepBody.css({"max-height":maxHeight+"px",overflow:"auto"})):(headerEle.addClass("minimal"),footerEle.addClass("minimal")),thisT.currentStepPopper.update()};let background=(0,_jquery.default)('[data-flexitour="step-background"]');return background.length&&(target=background),this.currentStepPopper=new _popper.default(target,content[0],config),this}recalculatePlacement(stepConfig){let target=this.getStepTarget(stepConfig),widthContent=this.currentStepNode.width()+16,targetOffsetLeft=target.offset().left-10,targetOffsetRight=target.offset().left+target.width()+10,placement=stepConfig.placement;return-1!==["left","right"].indexOf(placement)&&targetOffsetLeft<widthContent+10&&targetOffsetRight+widthContent+10>document.documentElement.clientWidth&&(placement="top"),placement}positionBackdrop(stepConfig){if(stepConfig.backdrop){this.currentStepConfig.hasBackdrop=!0;let backdrop=(0,_jquery.default)('<div data-flexitour="backdrop"></div>');if(stepConfig.zIndex?"append"===stepConfig.attachPoint?stepConfig.attachTo.append(backdrop):backdrop.insertAfter(stepConfig.attachTo):(0,_jquery.default)("body").append(backdrop),this.isStepActuallyVisible(stepConfig)){let background=(0,_jquery.default)('[data-flexitour="step-background"]');background.length||(background=(0,_jquery.default)('<div data-flexitour="step-background"></div>'));let targetNode=this.getStepTarget(stepConfig),buffer=10,colorNode=targetNode;buffer&&(colorNode=(0,_jquery.default)("body"));let drawertop=0;if(targetNode.parents('[data-usertour="scroller"]').length){const scrollerElement=targetNode.parents('[data-usertour="scroller"]'),navigationBuffer=scrollerElement.offset().top;scrollerElement.scrollTop()>=navigationBuffer&&(drawertop=scrollerElement.scrollTop()-navigationBuffer,background.css({position:"fixed"}))}background.css({width:targetNode.outerWidth()+buffer+buffer,height:targetNode.outerHeight()+buffer+buffer,left:targetNode.offset().left-buffer,top:targetNode.offset().top+drawertop-buffer,backgroundColor:this.calculateInherittedBackgroundColor(colorNode)}),targetNode.offset().left<buffer&&background.css({width:targetNode.outerWidth()+targetNode.offset().left+buffer,left:targetNode.offset().left}),targetNode.offset().top+drawertop<buffer&&background.css({height:targetNode.outerHeight()+targetNode.offset().top+buffer,top:targetNode.offset().top});let targetRadius=targetNode.css("borderRadius");targetRadius&&targetRadius!==(0,_jquery.default)("body").css("borderRadius")&&background.css("borderRadius",targetRadius),"absolute"===this.calculatePosition(targetNode)&&background.css("position","fixed");let fader=background.clone();if(fader.css({backgroundColor:backdrop.css("backgroundColor"),opacity:backdrop.css("opacity")}),fader.attr("data-flexitour","step-background-fader"),stepConfig.zIndex)"append"===stepConfig.attachPoint?stepConfig.attachTo.append(background):(fader.insertAfter(stepConfig.attachTo),background.insertAfter(stepConfig.attachTo));else{let targetClone=targetNode.clone();background.append(targetClone.first()),(0,_jquery.default)("body").append(fader),(0,_jquery.default)("body").append(background)}targetNode.attr("data-flexitour","step-backdrop"),stepConfig.zIndex&&(backdrop.css("zIndex",stepConfig.zIndex),background.css("zIndex",stepConfig.zIndex+1),targetNode.css("zIndex",stepConfig.zIndex+2)),fader.fadeOut("2000",(function(){(0,_jquery.default)(this).remove()}))}}return this}calculateZIndex(elem){if(elem=(0,_jquery.default)(elem),this.requireDefaultTourZindex(elem))return 0;for(;elem.length&&elem[0]!==document;){let position=elem.css("position");if("absolute"===position||"fixed"===position){let value=parseInt(elem.css("zIndex"),10);if(!isNaN(value)&&0!==value)return value}elem=elem.parent()}return 0}requireDefaultTourZindex(elem){return 0!==elem.parents('[data-region="fixed-drawer"]').length}calculateInherittedBackgroundColor(elem){let fakeNode=(0,_jquery.default)("<div>").hide();(0,_jquery.default)("body").append(fakeNode);let fakeElemColor=fakeNode.css("backgroundColor");for(fakeNode.remove(),elem=(0,_jquery.default)(elem);elem.length&&elem[0]!==document;){let color=elem.css("backgroundColor");if(color!==fakeElemColor)return color;elem=elem.parent()}return null}calculatePosition(elem){for(elem=(0,_jquery.default)(elem);elem.length&&elem[0]!==document;){let position=elem.css("position");if("static"!==position)return position;elem=elem.parent()}return null}accessibilityShow(){let hideFunction=function(child){let flexitourRole=child.data("flexitour");if(flexitourRole)switch(flexitourRole){case"container":case"target":return}child.attr("aria-hidden")||(child.attr("data-has-hidden",!0),Aria.hide(child))};this.currentStepNode.siblings().each((function(index,node){hideFunction((0,_jquery.default)(node))})),this.currentStepNode.parentsUntil("body").siblings().each((function(index,node){hideFunction((0,_jquery.default)(node))}))}accessibilityHide(){(0,_jquery.default)("[data-has-hidden]").each((function(index,node){var child;void 0!==(child=(0,_jquery.default)(node)).attr("data-has-hidden")&&(child.removeAttr("data-has-hidden"),Aria.unhide(child))}))}};return _exports.default=_default,_exports.default}));
 
 //# sourceMappingURL=tour.min.js.map
\ No newline at end of file
diff --git a/admin/tool/usertours/amd/build/tour.min.js.map b/admin/tool/usertours/amd/build/tour.min.js.map
index 05320af2e2e39..920ef17745737 100644
--- a/admin/tool/usertours/amd/build/tour.min.js.map
+++ b/admin/tool/usertours/amd/build/tour.min.js.map
@@ -1 +1 @@
-{"version":3,"file":"tour.min.js","sources":["../src/tour.js"],"sourcesContent":["// 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 * A user tour.\n *\n * @module tool_usertours/tour\n * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\n\n/**\n * A list of steps.\n *\n * @typedef {Object[]} StepList\n * @property {Number} stepId The id of the step in the database\n * @property {Number} position The position of the step within the tour (zero-indexed)\n */\n\nimport $ from 'jquery';\nimport * as Aria from 'core/aria';\nimport Popper from 'core/popper';\nimport {dispatchEvent} from 'core/event_dispatcher';\nimport {eventTypes} from './events';\nimport {getString} from 'core/str';\nimport {prefetchStrings} from 'core/prefetch';\nimport {notifyFilterContentUpdated} from 'core/event';\n\n/**\n * The minimum spacing for tour step to display.\n *\n * @private\n * @constant\n * @type {number}\n */\nconst MINSPACING = 10;\n\n/**\n * A user tour.\n *\n * @class tool_usertours/tour\n * @property {boolean} tourRunning Whether the tour is currently running.\n */\nconst Tour = class {\n    tourRunning = false;\n\n    /**\n     * @param   {object}    config  The configuration object.\n     */\n    constructor(config) {\n        this.init(config);\n    }\n\n    /**\n     * Initialise the tour.\n     *\n     * @method  init\n     * @param   {Object}    config  The configuration object.\n     * @chainable\n     * @return {Object} this.\n     */\n    init(config) {\n        // Unset all handlers.\n        this.eventHandlers = {};\n\n        // Reset the current tour states.\n        this.reset();\n\n        // Store the initial configuration.\n        this.originalConfiguration = config || {};\n\n        // Apply configuration.\n        this.configure.apply(this, arguments);\n\n        // Unset recalculate state.\n        this.possitionNeedToBeRecalculated = false;\n\n        // Unset recalculate count.\n        this.recalculatedNo = 0;\n\n        try {\n            this.storage = window.sessionStorage;\n            this.storageKey = 'tourstate_' + this.tourName;\n        } catch (e) {\n            this.storage = false;\n            this.storageKey = '';\n        }\n\n        prefetchStrings('tool_usertours', [\n            'nextstep_sequence',\n            'skip_tour'\n        ]);\n\n        return this;\n    }\n\n    /**\n     * Reset the current tour state.\n     *\n     * @method  reset\n     * @chainable\n     * @return {Object} this.\n     */\n    reset() {\n        // Hide the current step.\n        this.hide();\n\n        // Unset all handlers.\n        this.eventHandlers = [];\n\n        // Unset all listeners.\n        this.resetStepListeners();\n\n        // Unset the original configuration.\n        this.originalConfiguration = {};\n\n        // Reset the current step number and list of steps.\n        this.steps = [];\n\n        // Reset the current step number.\n        this.currentStepNumber = 0;\n\n        return this;\n    }\n\n    /**\n     * Prepare tour configuration.\n     *\n     * @method  configure\n     * @param {Object} config The configuration object.\n     * @chainable\n     * @return {Object} this.\n     */\n    configure(config) {\n        if (typeof config === 'object') {\n            // Tour name.\n            if (typeof config.tourName !== 'undefined') {\n                this.tourName = config.tourName;\n            }\n\n            // Set up eventHandlers.\n            if (config.eventHandlers) {\n                for (let eventName in config.eventHandlers) {\n                    config.eventHandlers[eventName].forEach(function(handler) {\n                        this.addEventHandler(eventName, handler);\n                    }, this);\n                }\n            }\n\n            // Reset the step configuration.\n            this.resetStepDefaults(true);\n\n            // Configure the steps.\n            if (typeof config.steps === 'object') {\n                this.steps = config.steps;\n            }\n\n            if (typeof config.template !== 'undefined') {\n                this.templateContent = config.template;\n            }\n        }\n\n        // Check that we have enough to start the tour.\n        this.checkMinimumRequirements();\n\n        return this;\n    }\n\n    /**\n     * Check that the configuration meets the minimum requirements.\n     *\n     * @method  checkMinimumRequirements\n     */\n    checkMinimumRequirements() {\n        // Need a tourName.\n        if (!this.tourName) {\n            throw new Error(\"Tour Name required\");\n        }\n\n        // Need a minimum of one step.\n        if (!this.steps || !this.steps.length) {\n            throw new Error(\"Steps must be specified\");\n        }\n    }\n\n    /**\n     * Reset step default configuration.\n     *\n     * @method  resetStepDefaults\n     * @param   {Boolean}   loadOriginalConfiguration   Whether to load the original configuration supplied with the Tour.\n     * @chainable\n     * @return {Object} this.\n     */\n    resetStepDefaults(loadOriginalConfiguration) {\n        if (typeof loadOriginalConfiguration === 'undefined') {\n            loadOriginalConfiguration = true;\n        }\n\n        this.stepDefaults = {};\n        if (!loadOriginalConfiguration || typeof this.originalConfiguration.stepDefaults === 'undefined') {\n            this.setStepDefaults({});\n        } else {\n            this.setStepDefaults(this.originalConfiguration.stepDefaults);\n        }\n\n        return this;\n    }\n\n    /**\n     * Set the step defaults.\n     *\n     * @method  setStepDefaults\n     * @param   {Object}    stepDefaults                The step defaults to apply to all steps\n     * @chainable\n     * @return {Object} this.\n     */\n    setStepDefaults(stepDefaults) {\n        if (!this.stepDefaults) {\n            this.stepDefaults = {};\n        }\n        $.extend(\n            this.stepDefaults,\n            {\n                element:        '',\n                placement:      'top',\n                delay:          0,\n                moveOnClick:    false,\n                moveAfterTime:  0,\n                orphan:         false,\n                direction:      1,\n            },\n            stepDefaults\n        );\n\n        return this;\n    }\n\n    /**\n     * Retrieve the current step number.\n     *\n     * @method  getCurrentStepNumber\n     * @return  {Number}                   The current step number\n     */\n    getCurrentStepNumber() {\n        return parseInt(this.currentStepNumber, 10);\n    }\n\n    /**\n     * Store the current step number.\n     *\n     * @method  setCurrentStepNumber\n     * @param   {Number}   stepNumber      The current step number\n     * @chainable\n     */\n    setCurrentStepNumber(stepNumber) {\n        this.currentStepNumber = stepNumber;\n        if (this.storage) {\n            try {\n                this.storage.setItem(this.storageKey, stepNumber);\n            } catch (e) {\n                if (e.code === DOMException.QUOTA_EXCEEDED_ERR) {\n                    this.storage.removeItem(this.storageKey);\n                }\n            }\n        }\n    }\n\n    /**\n     * Get the next step number after the currently displayed step.\n     *\n     * @method  getNextStepNumber\n     * @param   {Number}   stepNumber      The current step number\n     * @return  {Number}    The next step number to display\n     */\n    getNextStepNumber(stepNumber) {\n        if (typeof stepNumber === 'undefined') {\n            stepNumber = this.getCurrentStepNumber();\n        }\n        let nextStepNumber = stepNumber + 1;\n\n        // Keep checking the remaining steps.\n        while (nextStepNumber <= this.steps.length) {\n            if (this.isStepPotentiallyVisible(this.getStepConfig(nextStepNumber))) {\n                return nextStepNumber;\n            }\n            nextStepNumber++;\n        }\n\n        return null;\n    }\n\n    /**\n     * Get the previous step number before the currently displayed step.\n     *\n     * @method  getPreviousStepNumber\n     * @param   {Number}   stepNumber      The current step number\n     * @return  {Number}    The previous step number to display\n     */\n    getPreviousStepNumber(stepNumber) {\n        if (typeof stepNumber === 'undefined') {\n            stepNumber = this.getCurrentStepNumber();\n        }\n        let previousStepNumber = stepNumber - 1;\n\n        // Keep checking the remaining steps.\n        while (previousStepNumber >= 0) {\n            if (this.isStepPotentiallyVisible(this.getStepConfig(previousStepNumber))) {\n                return previousStepNumber;\n            }\n            previousStepNumber--;\n        }\n\n        return null;\n    }\n\n    /**\n     * Is the step the final step number?\n     *\n     * @method  isLastStep\n     * @param   {Number}   stepNumber  Step number to test\n     * @return  {Boolean}               Whether the step is the final step\n     */\n    isLastStep(stepNumber) {\n        let nextStepNumber = this.getNextStepNumber(stepNumber);\n\n        return nextStepNumber === null;\n    }\n\n    /**\n     * Is this step potentially visible?\n     *\n     * @method  isStepPotentiallyVisible\n     * @param   {Object}    stepConfig      The step configuration to normalise\n     * @return  {Boolean}               Whether the step is the potentially visible\n     */\n    isStepPotentiallyVisible(stepConfig) {\n        if (!stepConfig) {\n            // Without step config, there can be no step.\n            return false;\n        }\n\n        if (this.isStepActuallyVisible(stepConfig)) {\n            // If it is actually visible, it is already potentially visible.\n            return true;\n        }\n\n        if (typeof stepConfig.orphan !== 'undefined' && stepConfig.orphan) {\n            // Orphan steps have no target. They are always visible.\n            return true;\n        }\n\n        if (typeof stepConfig.delay !== 'undefined' && stepConfig.delay) {\n            // Only return true if the activated has not been used yet.\n            return true;\n        }\n\n        // Not theoretically, or actually visible.\n        return false;\n    }\n\n    /**\n     * Get potentially visible steps in a tour.\n     *\n     * @returns {StepList} A list of ordered steps\n     */\n    getPotentiallyVisibleSteps() {\n        let position = 1;\n        let result = [];\n        // Checking the total steps.\n        for (let stepNumber = 0; stepNumber < this.steps.length; stepNumber++) {\n            const stepConfig = this.getStepConfig(stepNumber);\n            if (this.isStepPotentiallyVisible(stepConfig)) {\n                result[stepNumber] = {stepId: stepConfig.stepid, position: position};\n                position++;\n            }\n        }\n\n        return result;\n    }\n\n    /**\n     * Is this step actually visible?\n     *\n     * @method  isStepActuallyVisible\n     * @param   {Object}    stepConfig      The step configuration to normalise\n     * @return  {Boolean}               Whether the step is actually visible\n     */\n    isStepActuallyVisible(stepConfig) {\n        if (!stepConfig) {\n            // Without step config, there can be no step.\n            return false;\n        }\n\n        // Check if the CSS styles are allowed on the browser or not.\n        if (!this.isCSSAllowed()) {\n            return false;\n        }\n\n        let target = this.getStepTarget(stepConfig);\n        if (target && target.length && target.is(':visible')) {\n            // Without a target, there can be no step.\n            return !!target.length;\n        }\n\n        return false;\n    }\n\n    /**\n     * Is the browser actually allow CSS styles?\n     *\n     * @returns {boolean} True if the browser is allowing CSS styles\n     */\n    isCSSAllowed() {\n        const testCSSElement = document.createElement('div');\n        testCSSElement.classList.add('hide');\n        document.body.appendChild(testCSSElement);\n        const styles = window.getComputedStyle(testCSSElement);\n        const isAllowed = styles.display === 'none';\n        testCSSElement.remove();\n\n        return isAllowed;\n    }\n\n    /**\n     * Go to the next step in the tour.\n     *\n     * @method  next\n     * @chainable\n     * @return {Object} this.\n     */\n    next() {\n        return this.gotoStep(this.getNextStepNumber());\n    }\n\n    /**\n     * Go to the previous step in the tour.\n     *\n     * @method  previous\n     * @chainable\n     * @return {Object} this.\n     */\n    previous() {\n        return this.gotoStep(this.getPreviousStepNumber(), -1);\n    }\n\n    /**\n     * Go to the specified step in the tour.\n     *\n     * @method  gotoStep\n     * @param   {Number}   stepNumber     The step number to display\n     * @param   {Number}   direction      Next or previous step\n     * @chainable\n     * @return {Object} this.\n     * @fires tool_usertours/stepRender\n     * @fires tool_usertours/stepRendered\n     * @fires tool_usertours/stepHide\n     * @fires tool_usertours/stepHidden\n     */\n    gotoStep(stepNumber, direction) {\n        if (stepNumber < 0) {\n            return this.endTour();\n        }\n\n        let stepConfig = this.getStepConfig(stepNumber);\n        if (stepConfig === null) {\n            return this.endTour();\n        }\n\n        return this._gotoStep(stepConfig, direction);\n    }\n\n    _gotoStep(stepConfig, direction) {\n        if (!stepConfig) {\n            return this.endTour();\n        }\n\n        if (typeof stepConfig.delay !== 'undefined' && stepConfig.delay && !stepConfig.delayed) {\n            stepConfig.delayed = true;\n            window.setTimeout(this._gotoStep.bind(this), stepConfig.delay, stepConfig, direction);\n\n            return this;\n        } else if (!stepConfig.orphan && !this.isStepActuallyVisible(stepConfig)) {\n            let fn = direction == -1 ? 'getPreviousStepNumber' : 'getNextStepNumber';\n            return this.gotoStep(this[fn](stepConfig.stepNumber), direction);\n        }\n\n        this.hide();\n\n        const stepRenderEvent = this.dispatchEvent(eventTypes.stepRender, {stepConfig}, true);\n        if (!stepRenderEvent.defaultPrevented) {\n            this.renderStep(stepConfig);\n            this.dispatchEvent(eventTypes.stepRendered, {stepConfig});\n        }\n\n        return this;\n    }\n\n    /**\n     * Fetch the normalised step configuration for the specified step number.\n     *\n     * @method  getStepConfig\n     * @param   {Number}   stepNumber      The step number to fetch configuration for\n     * @return  {Object}                    The step configuration\n     */\n    getStepConfig(stepNumber) {\n        if (stepNumber === null || stepNumber < 0 || stepNumber >= this.steps.length) {\n            return null;\n        }\n\n        // Normalise the step configuration.\n        let stepConfig = this.normalizeStepConfig(this.steps[stepNumber]);\n\n        // Add the stepNumber to the stepConfig.\n        stepConfig = $.extend(stepConfig, {stepNumber: stepNumber});\n\n        return stepConfig;\n    }\n\n    /**\n     * Normalise the supplied step configuration.\n     *\n     * @method  normalizeStepConfig\n     * @param   {Object}    stepConfig      The step configuration to normalise\n     * @return  {Object}                    The normalised step configuration\n     */\n    normalizeStepConfig(stepConfig) {\n\n        if (typeof stepConfig.reflex !== 'undefined' && typeof stepConfig.moveAfterClick === 'undefined') {\n            stepConfig.moveAfterClick = stepConfig.reflex;\n        }\n\n        if (typeof stepConfig.element !== 'undefined' && typeof stepConfig.target === 'undefined') {\n            stepConfig.target = stepConfig.element;\n        }\n\n        if (typeof stepConfig.content !== 'undefined' && typeof stepConfig.body === 'undefined') {\n            stepConfig.body = stepConfig.content;\n        }\n\n        stepConfig = $.extend({}, this.stepDefaults, stepConfig);\n\n        stepConfig = $.extend({}, {\n            attachTo: stepConfig.target,\n            attachPoint: 'after',\n        }, stepConfig);\n\n        if (stepConfig.attachTo) {\n            stepConfig.attachTo = $(stepConfig.attachTo).first();\n        }\n\n        return stepConfig;\n    }\n\n    /**\n     * Fetch the actual step target from the selector.\n     *\n     * This should not be called until after any delay has completed.\n     *\n     * @method  getStepTarget\n     * @param   {Object}    stepConfig      The step configuration\n     * @return  {$}\n     */\n    getStepTarget(stepConfig) {\n        if (stepConfig.target) {\n            return $(stepConfig.target);\n        }\n\n        return null;\n    }\n\n    /**\n     * Fire any event handlers for the specified event.\n     *\n     * @param {String} eventName The name of the event\n     * @param {Object} [detail={}] Any additional details to pass into the eveent\n     * @param {Boolean} [cancelable=false] Whether preventDefault() can be called\n     * @returns {CustomEvent}\n     */\n    dispatchEvent(\n        eventName,\n        detail = {},\n        cancelable = false\n    ) {\n        return dispatchEvent(eventName, {\n            // Add the tour to the detail.\n            tour: this,\n            ...detail,\n        }, document, {\n            cancelable,\n        });\n    }\n\n    /**\n     * @method addEventHandler\n     * @param  {string}      eventName       The name of the event to listen for\n     * @param  {function}    handler         The event handler to call\n     * @return {Object} this.\n     */\n    addEventHandler(eventName, handler) {\n        if (typeof this.eventHandlers[eventName] === 'undefined') {\n            this.eventHandlers[eventName] = [];\n        }\n\n        this.eventHandlers[eventName].push(handler);\n\n        return this;\n    }\n\n    /**\n     * Process listeners for the step being shown.\n     *\n     * @method  processStepListeners\n     * @param   {object}    stepConfig      The configuration for the step\n     * @chainable\n     * @return {Object} this.\n     */\n    processStepListeners(stepConfig) {\n        this.listeners.push(\n        // Next button.\n        {\n            node: this.currentStepNode,\n            args: ['click', '[data-role=\"next\"]', $.proxy(this.next, this)]\n        },\n\n        // Close and end tour buttons.\n        {\n            node: this.currentStepNode,\n            args: ['click', '[data-role=\"end\"]', $.proxy(this.endTour, this)]\n        },\n\n        // Click backdrop and hide tour.\n        {\n            node: $('[data-flexitour=\"backdrop\"]'),\n            args: ['click', $.proxy(this.hide, this)]\n        },\n\n        // Keypresses.\n        {\n            node: $('body'),\n            args: ['keydown', $.proxy(this.handleKeyDown, this)]\n        });\n\n        if (stepConfig.moveOnClick) {\n            var targetNode = this.getStepTarget(stepConfig);\n            this.listeners.push({\n                node: targetNode,\n                args: ['click', $.proxy(function(e) {\n                    if ($(e.target).parents('[data-flexitour=\"container\"]').length === 0) {\n                        // Ignore clicks when they are in the flexitour.\n                        window.setTimeout($.proxy(this.next, this), 500);\n                    }\n                }, this)]\n            });\n        }\n\n        this.listeners.forEach(function(listener) {\n            listener.node.on.apply(listener.node, listener.args);\n        });\n\n        return this;\n    }\n\n    /**\n     * Reset step listeners.\n     *\n     * @method  resetStepListeners\n     * @chainable\n     * @return {Object} this.\n     */\n    resetStepListeners() {\n        // Stop listening to all external handlers.\n        if (this.listeners) {\n            this.listeners.forEach(function(listener) {\n                listener.node.off.apply(listener.node, listener.args);\n            });\n        }\n        this.listeners = [];\n\n        return this;\n    }\n\n    /**\n     * The standard step renderer.\n     *\n     * @method  renderStep\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    renderStep(stepConfig) {\n        // Store the current step configuration for later.\n        this.currentStepConfig = stepConfig;\n        this.setCurrentStepNumber(stepConfig.stepNumber);\n\n        // Fetch the template and convert it to a $ object.\n        let template = $(this.getTemplateContent());\n\n        // Title.\n        template.find('[data-placeholder=\"title\"]')\n            .html(stepConfig.title);\n\n        // Body.\n        template.find('[data-placeholder=\"body\"]')\n            .html(stepConfig.body);\n\n        // Buttons.\n        const nextBtn = template.find('[data-role=\"next\"]');\n        const endBtn = template.find('[data-role=\"end\"]');\n\n        // Is this the final step?\n        if (this.isLastStep(stepConfig.stepNumber)) {\n            nextBtn.hide();\n            endBtn.removeClass(\"btn-secondary\").addClass(\"btn-primary\");\n        } else {\n            nextBtn.prop('disabled', false);\n            // Use Skip tour label for the End tour button.\n            getString('skip_tour', 'tool_usertours').then(value => {\n                endBtn.html(value);\n                return;\n            }).catch();\n        }\n\n        nextBtn.attr('role', 'button');\n        endBtn.attr('role', 'button');\n\n        if (this.originalConfiguration.displaystepnumbers) {\n            const stepsPotentiallyVisible = this.getPotentiallyVisibleSteps();\n            const totalStepsPotentiallyVisible = stepsPotentiallyVisible.length;\n            const position = stepsPotentiallyVisible[stepConfig.stepNumber].position;\n            if (totalStepsPotentiallyVisible > 1) {\n                // Change the label of the Next button to include the sequence.\n                getString('nextstep_sequence', 'tool_usertours',\n                    {position: position, total: totalStepsPotentiallyVisible}).then(value => {\n                    nextBtn.html(value);\n                    return;\n                }).catch();\n            }\n        }\n\n        // Replace the template with the updated version.\n        stepConfig.template = template;\n\n        // Add to the page.\n        this.addStepToPage(stepConfig);\n\n        // Process step listeners after adding to the page.\n        // This uses the currentNode.\n        this.processStepListeners(stepConfig);\n\n        return this;\n    }\n\n    /**\n     * Getter for the template content.\n     *\n     * @method  getTemplateContent\n     * @return  {$}\n     */\n    getTemplateContent() {\n        return $(this.templateContent).clone();\n    }\n\n    /**\n     * Helper to add a step to the page.\n     *\n     * @method  addStepToPage\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    addStepToPage(stepConfig) {\n        // Create the stepNode from the template data.\n        let currentStepNode = $('<span data-flexitour=\"container\"></span>')\n            .html(stepConfig.template)\n            .hide();\n        // Trigger the Moodle filters.\n        notifyFilterContentUpdated(currentStepNode);\n\n        // The scroll animation occurs on the body or html.\n        let animationTarget = $('body, html')\n            .stop(true, true);\n\n        if (this.isStepActuallyVisible(stepConfig)) {\n            let targetNode = this.getStepTarget(stepConfig);\n\n            if (targetNode.parents('[data-usertour=\"scroller\"]').length) {\n                animationTarget = targetNode.parents('[data-usertour=\"scroller\"]');\n            }\n\n            targetNode.data('flexitour', 'target');\n\n            let zIndex = this.calculateZIndex(targetNode);\n            if (zIndex) {\n                stepConfig.zIndex = zIndex + 1;\n            }\n\n            if (stepConfig.zIndex) {\n                currentStepNode.css('zIndex', stepConfig.zIndex + 1);\n            }\n\n            // Add the backdrop.\n            this.positionBackdrop(stepConfig);\n\n            $(document.body).append(currentStepNode);\n            this.currentStepNode = currentStepNode;\n\n            // Ensure that the step node is positioned.\n            // Some situations mean that the value is not properly calculated without this step.\n            this.currentStepNode.css({\n                top: 0,\n                left: 0,\n            });\n\n            animationTarget\n                .animate({\n                    scrollTop: this.calculateScrollTop(stepConfig),\n                }).promise().then(function() {\n                        this.positionStep(stepConfig);\n                        this.revealStep(stepConfig);\n                        return;\n                    }.bind(this))\n                    .catch(function() {\n                        // Silently fail.\n                    });\n\n        } else if (stepConfig.orphan) {\n            stepConfig.isOrphan = true;\n\n            // This will be appended to the body instead.\n            stepConfig.attachTo = $('body').first();\n            stepConfig.attachPoint = 'append';\n\n            // Add the backdrop.\n            this.positionBackdrop(stepConfig);\n\n            // This is an orphaned step.\n            currentStepNode.addClass('orphan');\n\n            // It lives in the body.\n            $(document.body).append(currentStepNode);\n            this.currentStepNode = currentStepNode;\n\n            this.currentStepNode.css('position', 'fixed');\n\n            this.currentStepPopper = new Popper(\n                $('body'),\n                this.currentStepNode[0], {\n                    removeOnDestroy: true,\n                    placement: stepConfig.placement + '-start',\n                    arrowElement: '[data-role=\"arrow\"]',\n                    // Empty the modifiers. We've already placed the step and don't want it moved.\n                    modifiers: {\n                        hide: {\n                            enabled: false,\n                        },\n                        applyStyle: {\n                            onLoad: null,\n                            enabled: false,\n                        },\n                    },\n                    onCreate: () => {\n                        // First, we need to check if the step's content contains any images.\n                        const images = this.currentStepNode.find('img');\n                        if (images.length) {\n                            // Images found, need to calculate the position when the image is loaded.\n                            images.on('load', () => {\n                                this.calculateStepPositionInPage(currentStepNode);\n                            });\n                        }\n                        this.calculateStepPositionInPage(currentStepNode);\n                    }\n                }\n            );\n\n            this.revealStep(stepConfig);\n        }\n\n        return this;\n    }\n\n    /**\n     * Make the given step visible.\n     *\n     * @method revealStep\n     * @param {Object} stepConfig The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    revealStep(stepConfig) {\n        // Fade the step in.\n        this.currentStepNode.fadeIn('', $.proxy(function() {\n                // Announce via ARIA.\n                this.announceStep(stepConfig);\n\n                // Focus on the current step Node.\n                this.currentStepNode.focus();\n                window.setTimeout($.proxy(function() {\n                    // After a brief delay, focus again.\n                    // There seems to be an issue with Jaws where it only reads the dialogue title initially.\n                    // This second focus helps it to read the full dialogue.\n                    if (this.currentStepNode) {\n                        this.currentStepNode.focus();\n                    }\n                }, this), 100);\n\n            }, this));\n\n        return this;\n    }\n\n    /**\n     * Helper to announce the step on the page.\n     *\n     * @method  announceStep\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    announceStep(stepConfig) {\n        // Setup the step Dialogue as per:\n        // * https://www.w3.org/TR/wai-aria-practices/#dialog_nonmodal\n        // * https://www.w3.org/TR/wai-aria-practices/#dialog_modal\n\n        // Generate an ID for the current step node.\n        let stepId = 'tour-step-' + this.tourName + '-' + stepConfig.stepNumber;\n        this.currentStepNode.attr('id', stepId);\n\n        let bodyRegion = this.currentStepNode.find('[data-placeholder=\"body\"]').first();\n        bodyRegion.attr('id', stepId + '-body');\n        bodyRegion.attr('role', 'document');\n\n        let headerRegion = this.currentStepNode.find('[data-placeholder=\"title\"]').first();\n        headerRegion.attr('id', stepId + '-title');\n        headerRegion.attr('aria-labelledby', stepId + '-body');\n\n        // Generally, a modal dialog has a role of dialog.\n        this.currentStepNode.attr('role', 'dialog');\n        this.currentStepNode.attr('tabindex', 0);\n        this.currentStepNode.attr('aria-labelledby', stepId + '-title');\n        this.currentStepNode.attr('aria-describedby', stepId + '-body');\n\n        // Configure ARIA attributes on the target.\n        let target = this.getStepTarget(stepConfig);\n        if (target) {\n            target.data('original-tabindex', target.attr('tabindex'));\n            if (!target.attr('tabindex')) {\n                target.attr('tabindex', 0);\n            }\n\n            target\n                .data('original-describedby', target.attr('aria-describedby'))\n                .attr('aria-describedby', stepId + '-body')\n                ;\n        }\n\n        this.accessibilityShow(stepConfig);\n\n        return this;\n    }\n\n    /**\n     * Handle key down events.\n     *\n     * @method  handleKeyDown\n     * @param   {EventFacade} e\n     */\n    handleKeyDown(e) {\n        let tabbableSelector = 'a[href], link[href], [draggable=true], [contenteditable=true], ';\n        tabbableSelector += ':input:enabled, [tabindex], button:enabled';\n        switch (e.keyCode) {\n            case 27:\n                this.endTour();\n                break;\n\n            // 9 == Tab - trap focus for items with a backdrop.\n            case 9:\n                // Tab must be handled on key up only in this instance.\n                (function() {\n                    if (!this.currentStepConfig.hasBackdrop) {\n                        // Trapping tab focus is only handled for those steps with a backdrop.\n                        return;\n                    }\n\n                    // Find all tabbable locations.\n                    let activeElement = $(document.activeElement);\n                    let stepTarget = this.getStepTarget(this.currentStepConfig);\n                    let tabbableNodes = $(tabbableSelector);\n                    let dialogContainer = $('span[data-flexitour=\"container\"]');\n                    let currentIndex;\n                    // Filter out element which is not belong to target section or dialogue.\n                    if (stepTarget) {\n                        tabbableNodes = tabbableNodes.filter(function(index, element) {\n                            return stepTarget !== null\n                                && (stepTarget.has(element).length\n                                    || dialogContainer.has(element).length\n                                    || stepTarget.is(element)\n                                    || dialogContainer.is(element));\n                        });\n                    }\n\n                    // Find index of focusing element.\n                    tabbableNodes.each(function(index, element) {\n                        if (activeElement.is(element)) {\n                            currentIndex = index;\n                            return false;\n                        }\n                        // Keep looping.\n                        return true;\n                    });\n\n                    let nextIndex;\n                    let nextNode;\n                    let focusRelevant;\n                    if (currentIndex != void 0) {\n                        let direction = 1;\n                        if (e.shiftKey) {\n                            direction = -1;\n                        }\n                        nextIndex = currentIndex;\n                        do {\n                            nextIndex += direction;\n                            nextNode = $(tabbableNodes[nextIndex]);\n                        } while (nextNode.length && nextNode.is(':disabled') || nextNode.is(':hidden'));\n                        if (nextNode.length) {\n                            // A new f\n                            focusRelevant = nextNode.closest(stepTarget).length;\n                            focusRelevant = focusRelevant || nextNode.closest(this.currentStepNode).length;\n                        } else {\n                            // Unable to find the target somehow.\n                            focusRelevant = false;\n                        }\n                    }\n\n                    if (focusRelevant) {\n                        nextNode.focus();\n                    } else {\n                        if (e.shiftKey) {\n                            // Focus on the last tabbable node in the step.\n                            this.currentStepNode.find(tabbableSelector).last().focus();\n                        } else {\n                            if (this.currentStepConfig.isOrphan) {\n                                // Focus on the step - there is no target.\n                                this.currentStepNode.focus();\n                            } else {\n                                // Focus on the step target.\n                                stepTarget.focus();\n                            }\n                        }\n                    }\n                    e.preventDefault();\n                }).call(this);\n                break;\n        }\n    }\n\n    /**\n     * Start the current tour.\n     *\n     * @method  startTour\n     * @param   {Number} startAt Which step number to start at. If not specified, starts at the last point.\n     * @chainable\n     * @return {Object} this.\n     * @fires tool_usertours/tourStart\n     * @fires tool_usertours/tourStarted\n     */\n    startTour(startAt) {\n        if (this.storage && typeof startAt === 'undefined') {\n            let storageStartValue = this.storage.getItem(this.storageKey);\n            if (storageStartValue) {\n                let storageStartAt = parseInt(storageStartValue, 10);\n                if (storageStartAt <= this.steps.length) {\n                    startAt = storageStartAt;\n                }\n            }\n        }\n\n        if (typeof startAt === 'undefined') {\n            startAt = this.getCurrentStepNumber();\n        }\n\n        const tourStartEvent = this.dispatchEvent(eventTypes.tourStart, {startAt}, true);\n        if (!tourStartEvent.defaultPrevented) {\n            this.gotoStep(startAt);\n            this.tourRunning = true;\n            this.dispatchEvent(eventTypes.tourStarted, {startAt});\n        }\n\n        return this;\n    }\n\n    /**\n     * Restart the tour from the beginning, resetting the completionlag.\n     *\n     * @method  restartTour\n     * @chainable\n     * @return {Object} this.\n     */\n    restartTour() {\n        return this.startTour(0);\n    }\n\n    /**\n     * End the current tour.\n     *\n     * @method  endTour\n     * @chainable\n     * @return {Object} this.\n     * @fires tool_usertours/tourEnd\n     * @fires tool_usertours/tourEnded\n     */\n    endTour() {\n        const tourEndEvent = this.dispatchEvent(eventTypes.tourEnd, {}, true);\n        if (tourEndEvent.defaultPrevented) {\n            return this;\n        }\n\n        if (this.currentStepConfig) {\n            let previousTarget = this.getStepTarget(this.currentStepConfig);\n            if (previousTarget) {\n                if (!previousTarget.attr('tabindex')) {\n                    previousTarget.attr('tabindex', '-1');\n                }\n                previousTarget.first().focus();\n            }\n        }\n\n        this.hide(true);\n\n        this.tourRunning = false;\n        this.dispatchEvent(eventTypes.tourEnded);\n\n        return this;\n    }\n\n    /**\n     * Hide any currently visible steps.\n     *\n     * @method hide\n     * @param {Bool} transition Animate the visibility change\n     * @chainable\n     * @return {Object} this.\n     * @fires tool_usertours/stepHide\n     * @fires tool_usertours/stepHidden\n     */\n    hide(transition) {\n        const stepHideEvent = this.dispatchEvent(eventTypes.stepHide, {}, true);\n        if (stepHideEvent.defaultPrevented) {\n            return this;\n        }\n\n        if (this.currentStepNode && this.currentStepNode.length) {\n            this.currentStepNode.hide();\n            if (this.currentStepPopper) {\n                this.currentStepPopper.destroy();\n            }\n        }\n\n        // Restore original target configuration.\n        if (this.currentStepConfig) {\n            let target = this.getStepTarget(this.currentStepConfig);\n            if (target) {\n                if (target.data('original-labelledby')) {\n                    target.attr('aria-labelledby', target.data('original-labelledby'));\n                }\n\n                if (target.data('original-describedby')) {\n                    target.attr('aria-describedby', target.data('original-describedby'));\n                }\n\n                if (target.data('original-tabindex')) {\n                    target.attr('tabindex', target.data('tabindex'));\n                } else {\n                    // If the target does not have the tabindex attribute at the beginning. We need to remove it.\n                    // We should wait a little here before removing the attribute to prevent the browser from adding it again.\n                    window.setTimeout(() => {\n                        target.removeAttr('tabindex');\n                    }, 400);\n                }\n            }\n\n            // Clear the step configuration.\n            this.currentStepConfig = null;\n        }\n\n        let fadeTime = 0;\n        if (transition) {\n            fadeTime = 400;\n        }\n\n        // Remove the backdrop features.\n        $('[data-flexitour=\"step-background\"]').remove();\n        $('[data-flexitour=\"step-backdrop\"]').removeAttr('data-flexitour');\n        $('[data-flexitour=\"backdrop\"]').fadeOut(fadeTime, function() {\n            $(this).remove();\n        });\n\n        // Remove aria-describedby and tabindex attributes.\n        if (this.currentStepNode && this.currentStepNode.length) {\n            let stepId = this.currentStepNode.attr('id');\n            if (stepId) {\n                let currentStepElement = '[aria-describedby=\"' + stepId + '-body\"]';\n                $(currentStepElement).removeAttr('tabindex');\n                $(currentStepElement).removeAttr('aria-describedby');\n            }\n        }\n\n        // Reset the listeners.\n        this.resetStepListeners();\n\n        this.accessibilityHide();\n\n        this.dispatchEvent(eventTypes.stepHidden);\n\n        this.currentStepNode = null;\n        this.currentStepPopper = null;\n        return this;\n    }\n\n    /**\n     * Show the current steps.\n     *\n     * @method show\n     * @chainable\n     * @return {Object} this.\n     */\n    show() {\n        // Show the current step.\n        let startAt = this.getCurrentStepNumber();\n\n        return this.gotoStep(startAt);\n    }\n\n    /**\n     * Return the current step node.\n     *\n     * @method  getStepContainer\n     * @return  {jQuery}\n     */\n    getStepContainer() {\n        return $(this.currentStepNode);\n    }\n\n    /**\n     * Calculate scrollTop.\n     *\n     * @method  calculateScrollTop\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @return  {Number}\n     */\n    calculateScrollTop(stepConfig) {\n        let viewportHeight = $(window).height();\n        let targetNode = this.getStepTarget(stepConfig);\n\n        let scrollParent = $(window);\n        if (targetNode.parents('[data-usertour=\"scroller\"]').length) {\n            scrollParent = targetNode.parents('[data-usertour=\"scroller\"]');\n        }\n        let scrollTop = scrollParent.scrollTop();\n\n        if (stepConfig.placement === 'top') {\n            // If the placement is top, center scroll at the top of the target.\n            scrollTop = targetNode.offset().top - (viewportHeight / 2);\n        } else if (stepConfig.placement === 'bottom') {\n            // If the placement is bottom, center scroll at the bottom of the target.\n            scrollTop = targetNode.offset().top + targetNode.height() + scrollTop - (viewportHeight / 2);\n        } else if (targetNode.height() <= (viewportHeight * 0.8)) {\n            // If the placement is left/right, and the target fits in the viewport, centre screen on the target\n            scrollTop = targetNode.offset().top - ((viewportHeight - targetNode.height()) / 2);\n        } else {\n            // If the placement is left/right, and the target is bigger than the viewport, set scrollTop to target.top + buffer\n            // and change step attachmentTarget to top+.\n            scrollTop = targetNode.offset().top - (viewportHeight * 0.2);\n        }\n\n        // Never scroll over the top.\n        scrollTop = Math.max(0, scrollTop);\n\n        // Never scroll beyond the bottom.\n        scrollTop = Math.min($(document).height() - viewportHeight, scrollTop);\n\n        return Math.ceil(scrollTop);\n    }\n\n    /**\n     * Calculate dialogue position for page middle.\n     *\n     * @param {jQuery} currentStepNode Current step node\n     * @method  calculateScrollTop\n     */\n    calculateStepPositionInPage(currentStepNode) {\n        let top = MINSPACING;\n        const viewportHeight = $(window).height();\n        const stepHeight = currentStepNode.height();\n        const viewportWidth = $(window).width();\n        const stepWidth = currentStepNode.width();\n        if (viewportHeight >= (stepHeight + (MINSPACING * 2))) {\n            top = Math.ceil((viewportHeight - stepHeight) / 2);\n        } else {\n            const headerHeight = currentStepNode.find('.modal-header').first().outerHeight() ?? 0;\n            const footerHeight = currentStepNode.find('.modal-footer').first().outerHeight() ?? 0;\n            const currentStepBody = currentStepNode.find('[data-placeholder=\"body\"]').first();\n            const maxHeight = viewportHeight - (MINSPACING * 2) - headerHeight - footerHeight;\n            currentStepBody.css({\n                'max-height': maxHeight + 'px',\n                'overflow': 'auto',\n            });\n        }\n        currentStepNode.offset({\n            top: top,\n            left: Math.ceil((viewportWidth - stepWidth) / 2)\n        });\n    }\n\n    /**\n     * Position the step on the page.\n     *\n     * @method  positionStep\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    positionStep(stepConfig) {\n        let content = this.currentStepNode;\n        let thisT = this;\n        if (!content || !content.length) {\n            // Unable to find the step node.\n            return this;\n        }\n\n        stepConfig.placement = this.recalculatePlacement(stepConfig);\n        let flipBehavior;\n        switch (stepConfig.placement) {\n            case 'left':\n                flipBehavior = ['left', 'right', 'top', 'bottom'];\n                break;\n            case 'right':\n                flipBehavior = ['right', 'left', 'top', 'bottom'];\n                break;\n            case 'top':\n                flipBehavior = ['top', 'bottom', 'right', 'left'];\n                break;\n            case 'bottom':\n                flipBehavior = ['bottom', 'top', 'right', 'left'];\n                break;\n            default:\n                flipBehavior = 'flip';\n                break;\n        }\n\n        let target = this.getStepTarget(stepConfig);\n        var config = {\n            placement: stepConfig.placement + '-start',\n            removeOnDestroy: true,\n            modifiers: {\n                flip: {\n                    behaviour: flipBehavior,\n                },\n                arrow: {\n                    element: '[data-role=\"arrow\"]',\n                },\n            },\n            onCreate: function(data) {\n                recalculateArrowPosition(data);\n                recalculateStepPosition(data);\n            },\n            onUpdate: function(data) {\n                recalculateArrowPosition(data);\n                if (thisT.possitionNeedToBeRecalculated) {\n                    thisT.recalculatedNo++;\n                    thisT.possitionNeedToBeRecalculated = false;\n                    recalculateStepPosition(data);\n                }\n            },\n        };\n\n        let recalculateArrowPosition = function(data) {\n            let placement = data.placement.split('-')[0];\n            const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n            const arrowElement = data.instance.popper.querySelector('[data-role=\"arrow\"]');\n            const stepElement = $(data.instance.popper.querySelector('[data-role=\"flexitour-step\"]'));\n            if (isVertical) {\n                let arrowHeight = parseFloat(window.getComputedStyle(arrowElement).height);\n                let arrowOffset = parseFloat(window.getComputedStyle(arrowElement).top);\n                let popperHeight = parseFloat(window.getComputedStyle(data.instance.popper).height);\n                let popperOffset = parseFloat(window.getComputedStyle(data.instance.popper).top);\n                let popperBorderWidth = parseFloat(stepElement.css('borderTopWidth'));\n                let popperBorderRadiusWidth = parseFloat(stepElement.css('borderTopLeftRadius')) * 2;\n                let arrowPos = arrowOffset + (arrowHeight / 2);\n                let maxPos = popperHeight + popperOffset - popperBorderWidth - popperBorderRadiusWidth;\n                let minPos = popperOffset + popperBorderWidth + popperBorderRadiusWidth;\n                if (arrowPos >= maxPos || arrowPos <= minPos) {\n                    let newArrowPos = 0;\n                    if (arrowPos > (popperHeight / 2)) {\n                        newArrowPos = maxPos - arrowHeight;\n                    } else {\n                        newArrowPos = minPos + arrowHeight;\n                    }\n                    $(arrowElement).css('top', newArrowPos);\n                }\n            } else {\n                let arrowWidth = parseFloat(window.getComputedStyle(arrowElement).width);\n                let arrowOffset = parseFloat(window.getComputedStyle(arrowElement).left);\n                let popperWidth = parseFloat(window.getComputedStyle(data.instance.popper).width);\n                let popperOffset = parseFloat(window.getComputedStyle(data.instance.popper).left);\n                let popperBorderWidth = parseFloat(stepElement.css('borderTopWidth'));\n                let popperBorderRadiusWidth = parseFloat(stepElement.css('borderTopLeftRadius')) * 2;\n                let arrowPos = arrowOffset + (arrowWidth / 2);\n                let maxPos = popperWidth + popperOffset - popperBorderWidth - popperBorderRadiusWidth;\n                let minPos = popperOffset + popperBorderWidth + popperBorderRadiusWidth;\n                if (arrowPos >= maxPos || arrowPos <= minPos) {\n                    let newArrowPos = 0;\n                    if (arrowPos > (popperWidth / 2)) {\n                        newArrowPos = maxPos - arrowWidth;\n                    } else {\n                        newArrowPos = minPos + arrowWidth;\n                    }\n                    $(arrowElement).css('left', newArrowPos);\n                }\n            }\n        };\n\n        const recalculateStepPosition = function(data) {\n            const placement = data.placement.split('-')[0];\n            const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n            const popperElement = $(data.instance.popper);\n            const targetElement = $(data.instance.reference);\n            const arrowElement = popperElement.find('[data-role=\"arrow\"]');\n            const stepElement = popperElement.find('[data-role=\"flexitour-step\"]');\n            const viewportHeight = $(window).height();\n            const viewportWidth = $(window).width();\n            const arrowHeight = parseFloat(arrowElement.outerHeight(true));\n            const popperHeight = parseFloat(popperElement.outerHeight(true));\n            const targetHeight = parseFloat(targetElement.outerHeight(true));\n            const arrowWidth = parseFloat(arrowElement.outerWidth(true));\n            const popperWidth = parseFloat(popperElement.outerWidth(true));\n            const targetWidth = parseFloat(targetElement.outerWidth(true));\n            let maxHeight;\n\n            if (thisT.recalculatedNo > 1) {\n                // The current screen is too small, and cannot fit with the original placement.\n                // We should set the placement to auto so the PopperJS can calculate the perfect placement.\n                thisT.currentStepPopper.options.placement = isVertical ? 'auto-left' : 'auto-bottom';\n            }\n            if (thisT.recalculatedNo > 2) {\n                // Return here to prevent recursive calling.\n                return;\n            }\n\n            if (isVertical) {\n                // Find the best place to put the tour: Left of right.\n                const leftSpace = targetElement.offset().left > 0 ? targetElement.offset().left : 0;\n                const rightSpace = viewportWidth - leftSpace - targetWidth;\n                const remainingSpace = leftSpace >= rightSpace ? leftSpace : rightSpace;\n                maxHeight = viewportHeight - MINSPACING * 2;\n                if (remainingSpace < (popperWidth + arrowWidth)) {\n                    const maxWidth = remainingSpace - MINSPACING - arrowWidth;\n                    if (maxWidth > 0) {\n                        popperElement.css({\n                            'max-width': maxWidth + 'px',\n                        });\n                        // Not enough space, flag true to make Popper to recalculate the position.\n                        thisT.possitionNeedToBeRecalculated = true;\n                    }\n                } else if (maxHeight < popperHeight) {\n                    // Check if the Popper's height can fit the viewport height or not.\n                    // If not, set the correct max-height value for the Popper element.\n                    popperElement.css({\n                        'max-height': maxHeight + 'px',\n                    });\n                }\n            } else {\n                // Find the best place to put the tour: Top of bottom.\n                const topSpace = targetElement.offset().top > 0 ? targetElement.offset().top : 0;\n                const bottomSpace = viewportHeight - topSpace - targetHeight;\n                const remainingSpace = topSpace >= bottomSpace ? topSpace : bottomSpace;\n                maxHeight = remainingSpace - MINSPACING - arrowHeight;\n                if (remainingSpace < (popperHeight + arrowHeight)) {\n                    // Not enough space, flag true to make Popper to recalculate the position.\n                    thisT.possitionNeedToBeRecalculated = true;\n                }\n            }\n\n            // Check if the Popper's height can fit the viewport height or not.\n            // If not, set the correct max-height value for the body.\n            const currentStepBody = stepElement.find('[data-placeholder=\"body\"]').first();\n            const headerEle = stepElement.find('.modal-header').first();\n            const footerEle = stepElement.find('.modal-footer').first();\n            const headerHeight = headerEle.outerHeight(true) ?? 0;\n            const footerHeight = footerEle.outerHeight(true) ?? 0;\n            maxHeight = maxHeight - headerHeight - footerHeight;\n            if (maxHeight > 0) {\n                headerEle.removeClass('minimal');\n                footerEle.removeClass('minimal');\n                currentStepBody.css({\n                    'max-height': maxHeight + 'px',\n                    'overflow': 'auto',\n                });\n            } else {\n                headerEle.addClass('minimal');\n                footerEle.addClass('minimal');\n            }\n            // Call the Popper update method to update the position.\n            thisT.currentStepPopper.update();\n        };\n\n        let background = $('[data-flexitour=\"step-background\"]');\n        if (background.length) {\n            target = background;\n        }\n        this.currentStepPopper = new Popper(target, content[0], config);\n\n        return this;\n    }\n\n    /**\n     * For left/right placement, checks that there is room for the step at current window size.\n     *\n     * If there is not enough room, changes placement to 'top'.\n     *\n     * @method  recalculatePlacement\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @return  {String}                    The placement after recalculate\n     */\n    recalculatePlacement(stepConfig) {\n        const buffer = 10;\n        const arrowWidth = 16;\n        let target = this.getStepTarget(stepConfig);\n        let widthContent = this.currentStepNode.width() + arrowWidth;\n        let targetOffsetLeft = target.offset().left - buffer;\n        let targetOffsetRight = target.offset().left + target.width() + buffer;\n        let placement = stepConfig.placement;\n\n        if (['left', 'right'].indexOf(placement) !== -1) {\n            if ((targetOffsetLeft < (widthContent + buffer)) &&\n                ((targetOffsetRight + widthContent + buffer) > document.documentElement.clientWidth)) {\n                placement = 'top';\n            }\n        }\n        return placement;\n    }\n\n    /**\n     * Add the backdrop.\n     *\n     * @method  positionBackdrop\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    positionBackdrop(stepConfig) {\n        if (stepConfig.backdrop) {\n            this.currentStepConfig.hasBackdrop = true;\n            let backdrop = $('<div data-flexitour=\"backdrop\"></div>');\n\n            if (stepConfig.zIndex) {\n                if (stepConfig.attachPoint === 'append') {\n                    stepConfig.attachTo.append(backdrop);\n                } else {\n                    backdrop.insertAfter(stepConfig.attachTo);\n                }\n            } else {\n                $('body').append(backdrop);\n            }\n\n            if (this.isStepActuallyVisible(stepConfig)) {\n                // The step has a visible target.\n                // Punch a hole through the backdrop.\n                let background = $('[data-flexitour=\"step-background\"]');\n                if (!background.length) {\n                    background = $('<div data-flexitour=\"step-background\"></div>');\n                }\n\n                let targetNode = this.getStepTarget(stepConfig);\n\n                let buffer = 10;\n\n                let colorNode = targetNode;\n                if (buffer) {\n                    colorNode = $('body');\n                }\n\n                let drawertop = 0;\n                if (targetNode.parents('[data-usertour=\"scroller\"]').length) {\n                    const scrollerElement = targetNode.parents('[data-usertour=\"scroller\"]');\n                    const navigationBuffer = scrollerElement.offset().top;\n                    if (scrollerElement.scrollTop() >= navigationBuffer) {\n                        drawertop = scrollerElement.scrollTop() - navigationBuffer;\n                        background.css({\n                            position: 'fixed'\n                        });\n                    }\n                }\n\n                background.css({\n                    width: targetNode.outerWidth() + buffer + buffer,\n                    height: targetNode.outerHeight() + buffer + buffer,\n                    left: targetNode.offset().left - buffer,\n                    top: targetNode.offset().top + drawertop - buffer,\n                    backgroundColor: this.calculateInherittedBackgroundColor(colorNode),\n                });\n\n                if (targetNode.offset().left < buffer) {\n                    background.css({\n                        width: targetNode.outerWidth() + targetNode.offset().left + buffer,\n                        left: targetNode.offset().left,\n                    });\n                }\n\n                if ((targetNode.offset().top + drawertop) < buffer) {\n                    background.css({\n                        height: targetNode.outerHeight() + targetNode.offset().top + buffer,\n                        top: targetNode.offset().top,\n                    });\n                }\n\n                let targetRadius = targetNode.css('borderRadius');\n                if (targetRadius && targetRadius !== $('body').css('borderRadius')) {\n                    background.css('borderRadius', targetRadius);\n                }\n\n                let targetPosition = this.calculatePosition(targetNode);\n                if (targetPosition === 'absolute') {\n                    background.css('position', 'fixed');\n                }\n\n                let fader = background.clone();\n                fader.css({\n                    backgroundColor: backdrop.css('backgroundColor'),\n                    opacity: backdrop.css('opacity'),\n                });\n                fader.attr('data-flexitour', 'step-background-fader');\n\n                if (targetNode.parents('[data-region=\"fixed-drawer\"]').length || !stepConfig.zIndex) {\n                    let targetClone = targetNode.clone();\n                    background.append(targetClone.first());\n                    $('body').append(fader);\n                    $('body').append(background);\n                } else {\n                    if (stepConfig.attachPoint === 'append') {\n                        stepConfig.attachTo.append(background);\n                    } else {\n                        fader.insertAfter(stepConfig.attachTo);\n                        background.insertAfter(stepConfig.attachTo);\n                    }\n                }\n\n                // Add the backdrop data to the actual target.\n                // This is the part which actually does the work.\n                targetNode.attr('data-flexitour', 'step-backdrop');\n\n                if (stepConfig.zIndex) {\n                    backdrop.css('zIndex', stepConfig.zIndex);\n                    background.css('zIndex', stepConfig.zIndex + 1);\n                    targetNode.css('zIndex', stepConfig.zIndex + 2);\n                }\n\n                fader.fadeOut('2000', function() {\n                    $(this).remove();\n                });\n            }\n        }\n        return this;\n    }\n\n    /**\n     * Calculate the inheritted z-index.\n     *\n     * @method  calculateZIndex\n     * @param   {jQuery}    elem                        The element to calculate z-index for\n     * @return  {Number}                                Calculated z-index\n     */\n    calculateZIndex(elem) {\n        elem = $(elem);\n        while (elem.length && elem[0] !== document) {\n            // Ignore z-index if position is set to a value where z-index is ignored by the browser\n            // This makes behavior of this function consistent across browsers\n            // WebKit always returns auto if the element is positioned.\n            let position = elem.css(\"position\");\n            if (position === \"absolute\" || position === \"fixed\") {\n                // IE returns 0 when zIndex is not specified\n                // other browsers return a string\n                // we ignore the case of nested elements with an explicit value of 0\n                // <div style=\"z-index: -10;\"><div style=\"z-index: 0;\"></div></div>\n                let value = parseInt(elem.css(\"zIndex\"), 10);\n                if (!isNaN(value) && value !== 0) {\n                    return value;\n                }\n            }\n            elem = elem.parent();\n        }\n\n        return 0;\n    }\n\n    /**\n     * Calculate the inheritted background colour.\n     *\n     * @method  calculateInherittedBackgroundColor\n     * @param   {jQuery}    elem                        The element to calculate colour for\n     * @return  {String}                                Calculated background colour\n     */\n    calculateInherittedBackgroundColor(elem) {\n        // Use a fake node to compare each element against.\n        let fakeNode = $('<div>').hide();\n        $('body').append(fakeNode);\n        let fakeElemColor = fakeNode.css('backgroundColor');\n        fakeNode.remove();\n\n        elem = $(elem);\n        while (elem.length && elem[0] !== document) {\n            let color = elem.css('backgroundColor');\n            if (color !== fakeElemColor) {\n                return color;\n            }\n            elem = elem.parent();\n        }\n\n        return null;\n    }\n\n    /**\n     * Calculate the inheritted position.\n     *\n     * @method  calculatePosition\n     * @param   {jQuery}    elem                        The element to calculate position for\n     * @return  {String}                                Calculated position\n     */\n    calculatePosition(elem) {\n        elem = $(elem);\n        while (elem.length && elem[0] !== document) {\n            let position = elem.css('position');\n            if (position !== 'static') {\n                return position;\n            }\n            elem = elem.parent();\n        }\n\n        return null;\n    }\n\n    /**\n     * Perform accessibility changes for step shown.\n     *\n     * This will add aria-hidden=\"true\" to all siblings and parent siblings.\n     *\n     * @method  accessibilityShow\n     */\n    accessibilityShow() {\n        let stateHolder = 'data-has-hidden';\n        let attrName = 'aria-hidden';\n        let hideFunction = function(child) {\n            let flexitourRole = child.data('flexitour');\n            if (flexitourRole) {\n                switch (flexitourRole) {\n                    case 'container':\n                    case 'target':\n                        return;\n                }\n            }\n\n            let hidden = child.attr(attrName);\n            if (!hidden) {\n                child.attr(stateHolder, true);\n                Aria.hide(child);\n            }\n        };\n\n        this.currentStepNode.siblings().each(function(index, node) {\n            hideFunction($(node));\n        });\n        this.currentStepNode.parentsUntil('body').siblings().each(function(index, node) {\n            hideFunction($(node));\n        });\n    }\n\n    /**\n     * Perform accessibility changes for step hidden.\n     *\n     * This will remove any newly added aria-hidden=\"true\".\n     *\n     * @method  accessibilityHide\n     */\n    accessibilityHide() {\n        let stateHolder = 'data-has-hidden';\n        let showFunction = function(child) {\n            let hidden = child.attr(stateHolder);\n            if (typeof hidden !== 'undefined') {\n                child.removeAttr(stateHolder);\n                Aria.unhide(child);\n            }\n        };\n\n        $('[' + stateHolder + ']').each(function(index, node) {\n            showFunction($(node));\n        });\n    }\n};\n\nexport default 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\ No newline at end of file
+{"version":3,"file":"tour.min.js","sources":["../src/tour.js"],"sourcesContent":["// 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 * A user tour.\n *\n * @module tool_usertours/tour\n * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\n\n/**\n * A list of steps.\n *\n * @typedef {Object[]} StepList\n * @property {Number} stepId The id of the step in the database\n * @property {Number} position The position of the step within the tour (zero-indexed)\n */\n\nimport $ from 'jquery';\nimport * as Aria from 'core/aria';\nimport Popper from 'core/popper';\nimport {dispatchEvent} from 'core/event_dispatcher';\nimport {eventTypes} from './events';\nimport {getString} from 'core/str';\nimport {prefetchStrings} from 'core/prefetch';\nimport {notifyFilterContentUpdated} from 'core/event';\n\n/**\n * The minimum spacing for tour step to display.\n *\n * @private\n * @constant\n * @type {number}\n */\nconst MINSPACING = 10;\n\n/**\n * A user tour.\n *\n * @class tool_usertours/tour\n * @property {boolean} tourRunning Whether the tour is currently running.\n */\nconst Tour = class {\n    tourRunning = false;\n\n    /**\n     * @param   {object}    config  The configuration object.\n     */\n    constructor(config) {\n        this.init(config);\n    }\n\n    /**\n     * Initialise the tour.\n     *\n     * @method  init\n     * @param   {Object}    config  The configuration object.\n     * @chainable\n     * @return {Object} this.\n     */\n    init(config) {\n        // Unset all handlers.\n        this.eventHandlers = {};\n\n        // Reset the current tour states.\n        this.reset();\n\n        // Store the initial configuration.\n        this.originalConfiguration = config || {};\n\n        // Apply configuration.\n        this.configure.apply(this, arguments);\n\n        // Unset recalculate state.\n        this.possitionNeedToBeRecalculated = false;\n\n        // Unset recalculate count.\n        this.recalculatedNo = 0;\n\n        try {\n            this.storage = window.sessionStorage;\n            this.storageKey = 'tourstate_' + this.tourName;\n        } catch (e) {\n            this.storage = false;\n            this.storageKey = '';\n        }\n\n        prefetchStrings('tool_usertours', [\n            'nextstep_sequence',\n            'skip_tour'\n        ]);\n\n        return this;\n    }\n\n    /**\n     * Reset the current tour state.\n     *\n     * @method  reset\n     * @chainable\n     * @return {Object} this.\n     */\n    reset() {\n        // Hide the current step.\n        this.hide();\n\n        // Unset all handlers.\n        this.eventHandlers = [];\n\n        // Unset all listeners.\n        this.resetStepListeners();\n\n        // Unset the original configuration.\n        this.originalConfiguration = {};\n\n        // Reset the current step number and list of steps.\n        this.steps = [];\n\n        // Reset the current step number.\n        this.currentStepNumber = 0;\n\n        return this;\n    }\n\n    /**\n     * Prepare tour configuration.\n     *\n     * @method  configure\n     * @param {Object} config The configuration object.\n     * @chainable\n     * @return {Object} this.\n     */\n    configure(config) {\n        if (typeof config === 'object') {\n            // Tour name.\n            if (typeof config.tourName !== 'undefined') {\n                this.tourName = config.tourName;\n            }\n\n            // Set up eventHandlers.\n            if (config.eventHandlers) {\n                for (let eventName in config.eventHandlers) {\n                    config.eventHandlers[eventName].forEach(function(handler) {\n                        this.addEventHandler(eventName, handler);\n                    }, this);\n                }\n            }\n\n            // Reset the step configuration.\n            this.resetStepDefaults(true);\n\n            // Configure the steps.\n            if (typeof config.steps === 'object') {\n                this.steps = config.steps;\n            }\n\n            if (typeof config.template !== 'undefined') {\n                this.templateContent = config.template;\n            }\n        }\n\n        // Check that we have enough to start the tour.\n        this.checkMinimumRequirements();\n\n        return this;\n    }\n\n    /**\n     * Check that the configuration meets the minimum requirements.\n     *\n     * @method  checkMinimumRequirements\n     */\n    checkMinimumRequirements() {\n        // Need a tourName.\n        if (!this.tourName) {\n            throw new Error(\"Tour Name required\");\n        }\n\n        // Need a minimum of one step.\n        if (!this.steps || !this.steps.length) {\n            throw new Error(\"Steps must be specified\");\n        }\n    }\n\n    /**\n     * Reset step default configuration.\n     *\n     * @method  resetStepDefaults\n     * @param   {Boolean}   loadOriginalConfiguration   Whether to load the original configuration supplied with the Tour.\n     * @chainable\n     * @return {Object} this.\n     */\n    resetStepDefaults(loadOriginalConfiguration) {\n        if (typeof loadOriginalConfiguration === 'undefined') {\n            loadOriginalConfiguration = true;\n        }\n\n        this.stepDefaults = {};\n        if (!loadOriginalConfiguration || typeof this.originalConfiguration.stepDefaults === 'undefined') {\n            this.setStepDefaults({});\n        } else {\n            this.setStepDefaults(this.originalConfiguration.stepDefaults);\n        }\n\n        return this;\n    }\n\n    /**\n     * Set the step defaults.\n     *\n     * @method  setStepDefaults\n     * @param   {Object}    stepDefaults                The step defaults to apply to all steps\n     * @chainable\n     * @return {Object} this.\n     */\n    setStepDefaults(stepDefaults) {\n        if (!this.stepDefaults) {\n            this.stepDefaults = {};\n        }\n        $.extend(\n            this.stepDefaults,\n            {\n                element:        '',\n                placement:      'top',\n                delay:          0,\n                moveOnClick:    false,\n                moveAfterTime:  0,\n                orphan:         false,\n                direction:      1,\n            },\n            stepDefaults\n        );\n\n        return this;\n    }\n\n    /**\n     * Retrieve the current step number.\n     *\n     * @method  getCurrentStepNumber\n     * @return  {Number}                   The current step number\n     */\n    getCurrentStepNumber() {\n        return parseInt(this.currentStepNumber, 10);\n    }\n\n    /**\n     * Store the current step number.\n     *\n     * @method  setCurrentStepNumber\n     * @param   {Number}   stepNumber      The current step number\n     * @chainable\n     */\n    setCurrentStepNumber(stepNumber) {\n        this.currentStepNumber = stepNumber;\n        if (this.storage) {\n            try {\n                this.storage.setItem(this.storageKey, stepNumber);\n            } catch (e) {\n                if (e.code === DOMException.QUOTA_EXCEEDED_ERR) {\n                    this.storage.removeItem(this.storageKey);\n                }\n            }\n        }\n    }\n\n    /**\n     * Get the next step number after the currently displayed step.\n     *\n     * @method  getNextStepNumber\n     * @param   {Number}   stepNumber      The current step number\n     * @return  {Number}    The next step number to display\n     */\n    getNextStepNumber(stepNumber) {\n        if (typeof stepNumber === 'undefined') {\n            stepNumber = this.getCurrentStepNumber();\n        }\n        let nextStepNumber = stepNumber + 1;\n\n        // Keep checking the remaining steps.\n        while (nextStepNumber <= this.steps.length) {\n            if (this.isStepPotentiallyVisible(this.getStepConfig(nextStepNumber))) {\n                return nextStepNumber;\n            }\n            nextStepNumber++;\n        }\n\n        return null;\n    }\n\n    /**\n     * Get the previous step number before the currently displayed step.\n     *\n     * @method  getPreviousStepNumber\n     * @param   {Number}   stepNumber      The current step number\n     * @return  {Number}    The previous step number to display\n     */\n    getPreviousStepNumber(stepNumber) {\n        if (typeof stepNumber === 'undefined') {\n            stepNumber = this.getCurrentStepNumber();\n        }\n        let previousStepNumber = stepNumber - 1;\n\n        // Keep checking the remaining steps.\n        while (previousStepNumber >= 0) {\n            if (this.isStepPotentiallyVisible(this.getStepConfig(previousStepNumber))) {\n                return previousStepNumber;\n            }\n            previousStepNumber--;\n        }\n\n        return null;\n    }\n\n    /**\n     * Is the step the final step number?\n     *\n     * @method  isLastStep\n     * @param   {Number}   stepNumber  Step number to test\n     * @return  {Boolean}               Whether the step is the final step\n     */\n    isLastStep(stepNumber) {\n        let nextStepNumber = this.getNextStepNumber(stepNumber);\n\n        return nextStepNumber === null;\n    }\n\n    /**\n     * Is this step potentially visible?\n     *\n     * @method  isStepPotentiallyVisible\n     * @param   {Object}    stepConfig      The step configuration to normalise\n     * @return  {Boolean}               Whether the step is the potentially visible\n     */\n    isStepPotentiallyVisible(stepConfig) {\n        if (!stepConfig) {\n            // Without step config, there can be no step.\n            return false;\n        }\n\n        if (this.isStepActuallyVisible(stepConfig)) {\n            // If it is actually visible, it is already potentially visible.\n            return true;\n        }\n\n        if (typeof stepConfig.orphan !== 'undefined' && stepConfig.orphan) {\n            // Orphan steps have no target. They are always visible.\n            return true;\n        }\n\n        if (typeof stepConfig.delay !== 'undefined' && stepConfig.delay) {\n            // Only return true if the activated has not been used yet.\n            return true;\n        }\n\n        // Not theoretically, or actually visible.\n        return false;\n    }\n\n    /**\n     * Get potentially visible steps in a tour.\n     *\n     * @returns {StepList} A list of ordered steps\n     */\n    getPotentiallyVisibleSteps() {\n        let position = 1;\n        let result = [];\n        // Checking the total steps.\n        for (let stepNumber = 0; stepNumber < this.steps.length; stepNumber++) {\n            const stepConfig = this.getStepConfig(stepNumber);\n            if (this.isStepPotentiallyVisible(stepConfig)) {\n                result[stepNumber] = {stepId: stepConfig.stepid, position: position};\n                position++;\n            }\n        }\n\n        return result;\n    }\n\n    /**\n     * Is this step actually visible?\n     *\n     * @method  isStepActuallyVisible\n     * @param   {Object}    stepConfig      The step configuration to normalise\n     * @return  {Boolean}               Whether the step is actually visible\n     */\n    isStepActuallyVisible(stepConfig) {\n        if (!stepConfig) {\n            // Without step config, there can be no step.\n            return false;\n        }\n\n        // Check if the CSS styles are allowed on the browser or not.\n        if (!this.isCSSAllowed()) {\n            return false;\n        }\n\n        let target = this.getStepTarget(stepConfig);\n        if (target && target.length && target.is(':visible')) {\n            // Without a target, there can be no step.\n            return !!target.length;\n        }\n\n        return false;\n    }\n\n    /**\n     * Is the browser actually allow CSS styles?\n     *\n     * @returns {boolean} True if the browser is allowing CSS styles\n     */\n    isCSSAllowed() {\n        const testCSSElement = document.createElement('div');\n        testCSSElement.classList.add('hide');\n        document.body.appendChild(testCSSElement);\n        const styles = window.getComputedStyle(testCSSElement);\n        const isAllowed = styles.display === 'none';\n        testCSSElement.remove();\n\n        return isAllowed;\n    }\n\n    /**\n     * Go to the next step in the tour.\n     *\n     * @method  next\n     * @chainable\n     * @return {Object} this.\n     */\n    next() {\n        return this.gotoStep(this.getNextStepNumber());\n    }\n\n    /**\n     * Go to the previous step in the tour.\n     *\n     * @method  previous\n     * @chainable\n     * @return {Object} this.\n     */\n    previous() {\n        return this.gotoStep(this.getPreviousStepNumber(), -1);\n    }\n\n    /**\n     * Go to the specified step in the tour.\n     *\n     * @method  gotoStep\n     * @param   {Number}   stepNumber     The step number to display\n     * @param   {Number}   direction      Next or previous step\n     * @chainable\n     * @return {Object} this.\n     * @fires tool_usertours/stepRender\n     * @fires tool_usertours/stepRendered\n     * @fires tool_usertours/stepHide\n     * @fires tool_usertours/stepHidden\n     */\n    gotoStep(stepNumber, direction) {\n        if (stepNumber < 0) {\n            return this.endTour();\n        }\n\n        let stepConfig = this.getStepConfig(stepNumber);\n        if (stepConfig === null) {\n            return this.endTour();\n        }\n\n        return this._gotoStep(stepConfig, direction);\n    }\n\n    _gotoStep(stepConfig, direction) {\n        if (!stepConfig) {\n            return this.endTour();\n        }\n\n        if (typeof stepConfig.delay !== 'undefined' && stepConfig.delay && !stepConfig.delayed) {\n            stepConfig.delayed = true;\n            window.setTimeout(this._gotoStep.bind(this), stepConfig.delay, stepConfig, direction);\n\n            return this;\n        } else if (!stepConfig.orphan && !this.isStepActuallyVisible(stepConfig)) {\n            let fn = direction == -1 ? 'getPreviousStepNumber' : 'getNextStepNumber';\n            return this.gotoStep(this[fn](stepConfig.stepNumber), direction);\n        }\n\n        this.hide();\n\n        const stepRenderEvent = this.dispatchEvent(eventTypes.stepRender, {stepConfig}, true);\n        if (!stepRenderEvent.defaultPrevented) {\n            this.renderStep(stepConfig);\n            this.dispatchEvent(eventTypes.stepRendered, {stepConfig});\n        }\n\n        return this;\n    }\n\n    /**\n     * Fetch the normalised step configuration for the specified step number.\n     *\n     * @method  getStepConfig\n     * @param   {Number}   stepNumber      The step number to fetch configuration for\n     * @return  {Object}                    The step configuration\n     */\n    getStepConfig(stepNumber) {\n        if (stepNumber === null || stepNumber < 0 || stepNumber >= this.steps.length) {\n            return null;\n        }\n\n        // Normalise the step configuration.\n        let stepConfig = this.normalizeStepConfig(this.steps[stepNumber]);\n\n        // Add the stepNumber to the stepConfig.\n        stepConfig = $.extend(stepConfig, {stepNumber: stepNumber});\n\n        return stepConfig;\n    }\n\n    /**\n     * Normalise the supplied step configuration.\n     *\n     * @method  normalizeStepConfig\n     * @param   {Object}    stepConfig      The step configuration to normalise\n     * @return  {Object}                    The normalised step configuration\n     */\n    normalizeStepConfig(stepConfig) {\n\n        if (typeof stepConfig.reflex !== 'undefined' && typeof stepConfig.moveAfterClick === 'undefined') {\n            stepConfig.moveAfterClick = stepConfig.reflex;\n        }\n\n        if (typeof stepConfig.element !== 'undefined' && typeof stepConfig.target === 'undefined') {\n            stepConfig.target = stepConfig.element;\n        }\n\n        if (typeof stepConfig.content !== 'undefined' && typeof stepConfig.body === 'undefined') {\n            stepConfig.body = stepConfig.content;\n        }\n\n        stepConfig = $.extend({}, this.stepDefaults, stepConfig);\n\n        stepConfig = $.extend({}, {\n            attachTo: stepConfig.target,\n            attachPoint: 'after',\n        }, stepConfig);\n\n        if (stepConfig.attachTo) {\n            stepConfig.attachTo = $(stepConfig.attachTo).first();\n        }\n\n        return stepConfig;\n    }\n\n    /**\n     * Fetch the actual step target from the selector.\n     *\n     * This should not be called until after any delay has completed.\n     *\n     * @method  getStepTarget\n     * @param   {Object}    stepConfig      The step configuration\n     * @return  {$}\n     */\n    getStepTarget(stepConfig) {\n        if (stepConfig.target) {\n            return $(stepConfig.target);\n        }\n\n        return null;\n    }\n\n    /**\n     * Fire any event handlers for the specified event.\n     *\n     * @param {String} eventName The name of the event\n     * @param {Object} [detail={}] Any additional details to pass into the eveent\n     * @param {Boolean} [cancelable=false] Whether preventDefault() can be called\n     * @returns {CustomEvent}\n     */\n    dispatchEvent(\n        eventName,\n        detail = {},\n        cancelable = false\n    ) {\n        return dispatchEvent(eventName, {\n            // Add the tour to the detail.\n            tour: this,\n            ...detail,\n        }, document, {\n            cancelable,\n        });\n    }\n\n    /**\n     * @method addEventHandler\n     * @param  {string}      eventName       The name of the event to listen for\n     * @param  {function}    handler         The event handler to call\n     * @return {Object} this.\n     */\n    addEventHandler(eventName, handler) {\n        if (typeof this.eventHandlers[eventName] === 'undefined') {\n            this.eventHandlers[eventName] = [];\n        }\n\n        this.eventHandlers[eventName].push(handler);\n\n        return this;\n    }\n\n    /**\n     * Process listeners for the step being shown.\n     *\n     * @method  processStepListeners\n     * @param   {object}    stepConfig      The configuration for the step\n     * @chainable\n     * @return {Object} this.\n     */\n    processStepListeners(stepConfig) {\n        this.listeners.push(\n        // Next button.\n        {\n            node: this.currentStepNode,\n            args: ['click', '[data-role=\"next\"]', $.proxy(this.next, this)]\n        },\n\n        // Close and end tour buttons.\n        {\n            node: this.currentStepNode,\n            args: ['click', '[data-role=\"end\"]', $.proxy(this.endTour, this)]\n        },\n\n        // Click backdrop and hide tour.\n        {\n            node: $('[data-flexitour=\"backdrop\"]'),\n            args: ['click', $.proxy(this.hide, this)]\n        },\n\n        // Keypresses.\n        {\n            node: $('body'),\n            args: ['keydown', $.proxy(this.handleKeyDown, this)]\n        });\n\n        if (stepConfig.moveOnClick) {\n            var targetNode = this.getStepTarget(stepConfig);\n            this.listeners.push({\n                node: targetNode,\n                args: ['click', $.proxy(function(e) {\n                    if ($(e.target).parents('[data-flexitour=\"container\"]').length === 0) {\n                        // Ignore clicks when they are in the flexitour.\n                        window.setTimeout($.proxy(this.next, this), 500);\n                    }\n                }, this)]\n            });\n        }\n\n        this.listeners.forEach(function(listener) {\n            listener.node.on.apply(listener.node, listener.args);\n        });\n\n        return this;\n    }\n\n    /**\n     * Reset step listeners.\n     *\n     * @method  resetStepListeners\n     * @chainable\n     * @return {Object} this.\n     */\n    resetStepListeners() {\n        // Stop listening to all external handlers.\n        if (this.listeners) {\n            this.listeners.forEach(function(listener) {\n                listener.node.off.apply(listener.node, listener.args);\n            });\n        }\n        this.listeners = [];\n\n        return this;\n    }\n\n    /**\n     * The standard step renderer.\n     *\n     * @method  renderStep\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    renderStep(stepConfig) {\n        // Store the current step configuration for later.\n        this.currentStepConfig = stepConfig;\n        this.setCurrentStepNumber(stepConfig.stepNumber);\n\n        // Fetch the template and convert it to a $ object.\n        let template = $(this.getTemplateContent());\n\n        // Title.\n        template.find('[data-placeholder=\"title\"]')\n            .html(stepConfig.title);\n\n        // Body.\n        template.find('[data-placeholder=\"body\"]')\n            .html(stepConfig.body);\n\n        // Buttons.\n        const nextBtn = template.find('[data-role=\"next\"]');\n        const endBtn = template.find('[data-role=\"end\"]');\n\n        // Is this the final step?\n        if (this.isLastStep(stepConfig.stepNumber)) {\n            nextBtn.hide();\n            endBtn.removeClass(\"btn-secondary\").addClass(\"btn-primary\");\n        } else {\n            nextBtn.prop('disabled', false);\n            // Use Skip tour label for the End tour button.\n            getString('skip_tour', 'tool_usertours').then(value => {\n                endBtn.html(value);\n                return;\n            }).catch();\n        }\n\n        nextBtn.attr('role', 'button');\n        endBtn.attr('role', 'button');\n\n        if (this.originalConfiguration.displaystepnumbers) {\n            const stepsPotentiallyVisible = this.getPotentiallyVisibleSteps();\n            const totalStepsPotentiallyVisible = stepsPotentiallyVisible.length;\n            const position = stepsPotentiallyVisible[stepConfig.stepNumber].position;\n            if (totalStepsPotentiallyVisible > 1) {\n                // Change the label of the Next button to include the sequence.\n                getString('nextstep_sequence', 'tool_usertours',\n                    {position: position, total: totalStepsPotentiallyVisible}).then(value => {\n                    nextBtn.html(value);\n                    return;\n                }).catch();\n            }\n        }\n\n        // Replace the template with the updated version.\n        stepConfig.template = template;\n\n        // Add to the page.\n        this.addStepToPage(stepConfig);\n\n        // Process step listeners after adding to the page.\n        // This uses the currentNode.\n        this.processStepListeners(stepConfig);\n\n        return this;\n    }\n\n    /**\n     * Getter for the template content.\n     *\n     * @method  getTemplateContent\n     * @return  {$}\n     */\n    getTemplateContent() {\n        return $(this.templateContent).clone();\n    }\n\n    /**\n     * Helper to add a step to the page.\n     *\n     * @method  addStepToPage\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    addStepToPage(stepConfig) {\n        // Create the stepNode from the template data.\n        let currentStepNode = $('<span data-flexitour=\"container\"></span>')\n            .html(stepConfig.template)\n            .hide();\n        // Trigger the Moodle filters.\n        notifyFilterContentUpdated(currentStepNode);\n\n        // The scroll animation occurs on the body or html.\n        let animationTarget = $('body, html')\n            .stop(true, true);\n\n        if (this.isStepActuallyVisible(stepConfig)) {\n            let targetNode = this.getStepTarget(stepConfig);\n\n            if (targetNode.parents('[data-usertour=\"scroller\"]').length) {\n                animationTarget = targetNode.parents('[data-usertour=\"scroller\"]');\n            }\n\n            targetNode.data('flexitour', 'target');\n\n            let zIndex = this.calculateZIndex(targetNode);\n            if (zIndex) {\n                stepConfig.zIndex = zIndex + 1;\n            }\n\n            if (stepConfig.zIndex) {\n                currentStepNode.css('zIndex', stepConfig.zIndex + 1);\n            }\n\n            // Add the backdrop.\n            this.positionBackdrop(stepConfig);\n\n            $(document.body).append(currentStepNode);\n            this.currentStepNode = currentStepNode;\n\n            // Ensure that the step node is positioned.\n            // Some situations mean that the value is not properly calculated without this step.\n            this.currentStepNode.css({\n                top: 0,\n                left: 0,\n            });\n\n            animationTarget\n                .animate({\n                    scrollTop: this.calculateScrollTop(stepConfig),\n                }).promise().then(function() {\n                        this.positionStep(stepConfig);\n                        this.revealStep(stepConfig);\n                        return;\n                    }.bind(this))\n                    .catch(function() {\n                        // Silently fail.\n                    });\n\n        } else if (stepConfig.orphan) {\n            stepConfig.isOrphan = true;\n\n            // This will be appended to the body instead.\n            stepConfig.attachTo = $('body').first();\n            stepConfig.attachPoint = 'append';\n\n            // Add the backdrop.\n            this.positionBackdrop(stepConfig);\n\n            // This is an orphaned step.\n            currentStepNode.addClass('orphan');\n\n            // It lives in the body.\n            $(document.body).append(currentStepNode);\n            this.currentStepNode = currentStepNode;\n\n            this.currentStepNode.css('position', 'fixed');\n\n            this.currentStepPopper = new Popper(\n                $('body'),\n                this.currentStepNode[0], {\n                    removeOnDestroy: true,\n                    placement: stepConfig.placement + '-start',\n                    arrowElement: '[data-role=\"arrow\"]',\n                    // Empty the modifiers. We've already placed the step and don't want it moved.\n                    modifiers: {\n                        hide: {\n                            enabled: false,\n                        },\n                        applyStyle: {\n                            onLoad: null,\n                            enabled: false,\n                        },\n                    },\n                    onCreate: () => {\n                        // First, we need to check if the step's content contains any images.\n                        const images = this.currentStepNode.find('img');\n                        if (images.length) {\n                            // Images found, need to calculate the position when the image is loaded.\n                            images.on('load', () => {\n                                this.calculateStepPositionInPage(currentStepNode);\n                            });\n                        }\n                        this.calculateStepPositionInPage(currentStepNode);\n                    }\n                }\n            );\n\n            this.revealStep(stepConfig);\n        }\n\n        return this;\n    }\n\n    /**\n     * Make the given step visible.\n     *\n     * @method revealStep\n     * @param {Object} stepConfig The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    revealStep(stepConfig) {\n        // Fade the step in.\n        this.currentStepNode.fadeIn('', $.proxy(function() {\n                // Announce via ARIA.\n                this.announceStep(stepConfig);\n\n                // Focus on the current step Node.\n                this.currentStepNode.focus();\n                window.setTimeout($.proxy(function() {\n                    // After a brief delay, focus again.\n                    // There seems to be an issue with Jaws where it only reads the dialogue title initially.\n                    // This second focus helps it to read the full dialogue.\n                    if (this.currentStepNode) {\n                        this.currentStepNode.focus();\n                    }\n                }, this), 100);\n\n            }, this));\n\n        return this;\n    }\n\n    /**\n     * Helper to announce the step on the page.\n     *\n     * @method  announceStep\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    announceStep(stepConfig) {\n        // Setup the step Dialogue as per:\n        // * https://www.w3.org/TR/wai-aria-practices/#dialog_nonmodal\n        // * https://www.w3.org/TR/wai-aria-practices/#dialog_modal\n\n        // Generate an ID for the current step node.\n        let stepId = 'tour-step-' + this.tourName + '-' + stepConfig.stepNumber;\n        this.currentStepNode.attr('id', stepId);\n\n        let bodyRegion = this.currentStepNode.find('[data-placeholder=\"body\"]').first();\n        bodyRegion.attr('id', stepId + '-body');\n        bodyRegion.attr('role', 'document');\n\n        let headerRegion = this.currentStepNode.find('[data-placeholder=\"title\"]').first();\n        headerRegion.attr('id', stepId + '-title');\n        headerRegion.attr('aria-labelledby', stepId + '-body');\n\n        // Generally, a modal dialog has a role of dialog.\n        this.currentStepNode.attr('role', 'dialog');\n        this.currentStepNode.attr('tabindex', 0);\n        this.currentStepNode.attr('aria-labelledby', stepId + '-title');\n        this.currentStepNode.attr('aria-describedby', stepId + '-body');\n\n        // Configure ARIA attributes on the target.\n        let target = this.getStepTarget(stepConfig);\n        if (target) {\n            target.data('original-tabindex', target.attr('tabindex'));\n            if (!target.attr('tabindex')) {\n                target.attr('tabindex', 0);\n            }\n\n            target\n                .data('original-describedby', target.attr('aria-describedby'))\n                .attr('aria-describedby', stepId + '-body')\n                ;\n        }\n\n        this.accessibilityShow(stepConfig);\n\n        return this;\n    }\n\n    /**\n     * Handle key down events.\n     *\n     * @method  handleKeyDown\n     * @param   {EventFacade} e\n     */\n    handleKeyDown(e) {\n        let tabbableSelector = 'a[href], link[href], [draggable=true], [contenteditable=true], ';\n        tabbableSelector += ':input:enabled, [tabindex], button:enabled';\n        switch (e.keyCode) {\n            case 27:\n                this.endTour();\n                break;\n\n            // 9 == Tab - trap focus for items with a backdrop.\n            case 9:\n                // Tab must be handled on key up only in this instance.\n                (function() {\n                    if (!this.currentStepConfig.hasBackdrop) {\n                        // Trapping tab focus is only handled for those steps with a backdrop.\n                        return;\n                    }\n\n                    // Find all tabbable locations.\n                    let activeElement = $(document.activeElement);\n                    let stepTarget = this.getStepTarget(this.currentStepConfig);\n                    let tabbableNodes = $(tabbableSelector);\n                    let dialogContainer = $('span[data-flexitour=\"container\"]');\n                    let currentIndex;\n                    // Filter out element which is not belong to target section or dialogue.\n                    if (stepTarget) {\n                        tabbableNodes = tabbableNodes.filter(function(index, element) {\n                            return stepTarget !== null\n                                && (stepTarget.has(element).length\n                                    || dialogContainer.has(element).length\n                                    || stepTarget.is(element)\n                                    || dialogContainer.is(element));\n                        });\n                    }\n\n                    // Find index of focusing element.\n                    tabbableNodes.each(function(index, element) {\n                        if (activeElement.is(element)) {\n                            currentIndex = index;\n                            return false;\n                        }\n                        // Keep looping.\n                        return true;\n                    });\n\n                    let nextIndex;\n                    let nextNode;\n                    let focusRelevant;\n                    if (currentIndex != void 0) {\n                        let direction = 1;\n                        if (e.shiftKey) {\n                            direction = -1;\n                        }\n                        nextIndex = currentIndex;\n                        do {\n                            nextIndex += direction;\n                            nextNode = $(tabbableNodes[nextIndex]);\n                        } while (nextNode.length && nextNode.is(':disabled') || nextNode.is(':hidden'));\n                        if (nextNode.length) {\n                            // A new f\n                            focusRelevant = nextNode.closest(stepTarget).length;\n                            focusRelevant = focusRelevant || nextNode.closest(this.currentStepNode).length;\n                        } else {\n                            // Unable to find the target somehow.\n                            focusRelevant = false;\n                        }\n                    }\n\n                    if (focusRelevant) {\n                        nextNode.focus();\n                    } else {\n                        if (e.shiftKey) {\n                            // Focus on the last tabbable node in the step.\n                            this.currentStepNode.find(tabbableSelector).last().focus();\n                        } else {\n                            if (this.currentStepConfig.isOrphan) {\n                                // Focus on the step - there is no target.\n                                this.currentStepNode.focus();\n                            } else {\n                                // Focus on the step target.\n                                stepTarget.focus();\n                            }\n                        }\n                    }\n                    e.preventDefault();\n                }).call(this);\n                break;\n        }\n    }\n\n    /**\n     * Start the current tour.\n     *\n     * @method  startTour\n     * @param   {Number} startAt Which step number to start at. If not specified, starts at the last point.\n     * @chainable\n     * @return {Object} this.\n     * @fires tool_usertours/tourStart\n     * @fires tool_usertours/tourStarted\n     */\n    startTour(startAt) {\n        if (this.storage && typeof startAt === 'undefined') {\n            let storageStartValue = this.storage.getItem(this.storageKey);\n            if (storageStartValue) {\n                let storageStartAt = parseInt(storageStartValue, 10);\n                if (storageStartAt <= this.steps.length) {\n                    startAt = storageStartAt;\n                }\n            }\n        }\n\n        if (typeof startAt === 'undefined') {\n            startAt = this.getCurrentStepNumber();\n        }\n\n        const tourStartEvent = this.dispatchEvent(eventTypes.tourStart, {startAt}, true);\n        if (!tourStartEvent.defaultPrevented) {\n            this.gotoStep(startAt);\n            this.tourRunning = true;\n            this.dispatchEvent(eventTypes.tourStarted, {startAt});\n        }\n\n        return this;\n    }\n\n    /**\n     * Restart the tour from the beginning, resetting the completionlag.\n     *\n     * @method  restartTour\n     * @chainable\n     * @return {Object} this.\n     */\n    restartTour() {\n        return this.startTour(0);\n    }\n\n    /**\n     * End the current tour.\n     *\n     * @method  endTour\n     * @chainable\n     * @return {Object} this.\n     * @fires tool_usertours/tourEnd\n     * @fires tool_usertours/tourEnded\n     */\n    endTour() {\n        const tourEndEvent = this.dispatchEvent(eventTypes.tourEnd, {}, true);\n        if (tourEndEvent.defaultPrevented) {\n            return this;\n        }\n\n        if (this.currentStepConfig) {\n            let previousTarget = this.getStepTarget(this.currentStepConfig);\n            if (previousTarget) {\n                if (!previousTarget.attr('tabindex')) {\n                    previousTarget.attr('tabindex', '-1');\n                }\n                previousTarget.first().focus();\n            }\n        }\n\n        this.hide(true);\n\n        this.tourRunning = false;\n        this.dispatchEvent(eventTypes.tourEnded);\n\n        return this;\n    }\n\n    /**\n     * Hide any currently visible steps.\n     *\n     * @method hide\n     * @param {Bool} transition Animate the visibility change\n     * @chainable\n     * @return {Object} this.\n     * @fires tool_usertours/stepHide\n     * @fires tool_usertours/stepHidden\n     */\n    hide(transition) {\n        const stepHideEvent = this.dispatchEvent(eventTypes.stepHide, {}, true);\n        if (stepHideEvent.defaultPrevented) {\n            return this;\n        }\n\n        if (this.currentStepNode && this.currentStepNode.length) {\n            this.currentStepNode.hide();\n            if (this.currentStepPopper) {\n                this.currentStepPopper.destroy();\n            }\n        }\n\n        // Restore original target configuration.\n        if (this.currentStepConfig) {\n            let target = this.getStepTarget(this.currentStepConfig);\n            if (target) {\n                if (target.data('original-labelledby')) {\n                    target.attr('aria-labelledby', target.data('original-labelledby'));\n                }\n\n                if (target.data('original-describedby')) {\n                    target.attr('aria-describedby', target.data('original-describedby'));\n                }\n\n                if (target.data('original-tabindex')) {\n                    target.attr('tabindex', target.data('tabindex'));\n                } else {\n                    // If the target does not have the tabindex attribute at the beginning. We need to remove it.\n                    // We should wait a little here before removing the attribute to prevent the browser from adding it again.\n                    window.setTimeout(() => {\n                        target.removeAttr('tabindex');\n                    }, 400);\n                }\n            }\n\n            // Clear the step configuration.\n            this.currentStepConfig = null;\n        }\n\n        let fadeTime = 0;\n        if (transition) {\n            fadeTime = 400;\n        }\n\n        // Remove the backdrop features.\n        $('[data-flexitour=\"step-background\"]').remove();\n        $('[data-flexitour=\"step-backdrop\"]').removeAttr('data-flexitour');\n        $('[data-flexitour=\"backdrop\"]').fadeOut(fadeTime, function() {\n            $(this).remove();\n        });\n\n        // Remove aria-describedby and tabindex attributes.\n        if (this.currentStepNode && this.currentStepNode.length) {\n            let stepId = this.currentStepNode.attr('id');\n            if (stepId) {\n                let currentStepElement = '[aria-describedby=\"' + stepId + '-body\"]';\n                $(currentStepElement).removeAttr('tabindex');\n                $(currentStepElement).removeAttr('aria-describedby');\n            }\n        }\n\n        // Reset the listeners.\n        this.resetStepListeners();\n\n        this.accessibilityHide();\n\n        this.dispatchEvent(eventTypes.stepHidden);\n\n        this.currentStepNode = null;\n        this.currentStepPopper = null;\n        return this;\n    }\n\n    /**\n     * Show the current steps.\n     *\n     * @method show\n     * @chainable\n     * @return {Object} this.\n     */\n    show() {\n        // Show the current step.\n        let startAt = this.getCurrentStepNumber();\n\n        return this.gotoStep(startAt);\n    }\n\n    /**\n     * Return the current step node.\n     *\n     * @method  getStepContainer\n     * @return  {jQuery}\n     */\n    getStepContainer() {\n        return $(this.currentStepNode);\n    }\n\n    /**\n     * Calculate scrollTop.\n     *\n     * @method  calculateScrollTop\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @return  {Number}\n     */\n    calculateScrollTop(stepConfig) {\n        let viewportHeight = $(window).height();\n        let targetNode = this.getStepTarget(stepConfig);\n\n        let scrollParent = $(window);\n        if (targetNode.parents('[data-usertour=\"scroller\"]').length) {\n            scrollParent = targetNode.parents('[data-usertour=\"scroller\"]');\n        }\n        let scrollTop = scrollParent.scrollTop();\n\n        if (stepConfig.placement === 'top') {\n            // If the placement is top, center scroll at the top of the target.\n            scrollTop = targetNode.offset().top - (viewportHeight / 2);\n        } else if (stepConfig.placement === 'bottom') {\n            // If the placement is bottom, center scroll at the bottom of the target.\n            scrollTop = targetNode.offset().top + targetNode.height() + scrollTop - (viewportHeight / 2);\n        } else if (targetNode.height() <= (viewportHeight * 0.8)) {\n            // If the placement is left/right, and the target fits in the viewport, centre screen on the target\n            scrollTop = targetNode.offset().top - ((viewportHeight - targetNode.height()) / 2);\n        } else {\n            // If the placement is left/right, and the target is bigger than the viewport, set scrollTop to target.top + buffer\n            // and change step attachmentTarget to top+.\n            scrollTop = targetNode.offset().top - (viewportHeight * 0.2);\n        }\n\n        // Never scroll over the top.\n        scrollTop = Math.max(0, scrollTop);\n\n        // Never scroll beyond the bottom.\n        scrollTop = Math.min($(document).height() - viewportHeight, scrollTop);\n\n        return Math.ceil(scrollTop);\n    }\n\n    /**\n     * Calculate dialogue position for page middle.\n     *\n     * @param {jQuery} currentStepNode Current step node\n     * @method  calculateScrollTop\n     */\n    calculateStepPositionInPage(currentStepNode) {\n        let top = MINSPACING;\n        const viewportHeight = $(window).height();\n        const stepHeight = currentStepNode.height();\n        const viewportWidth = $(window).width();\n        const stepWidth = currentStepNode.width();\n        if (viewportHeight >= (stepHeight + (MINSPACING * 2))) {\n            top = Math.ceil((viewportHeight - stepHeight) / 2);\n        } else {\n            const headerHeight = currentStepNode.find('.modal-header').first().outerHeight() ?? 0;\n            const footerHeight = currentStepNode.find('.modal-footer').first().outerHeight() ?? 0;\n            const currentStepBody = currentStepNode.find('[data-placeholder=\"body\"]').first();\n            const maxHeight = viewportHeight - (MINSPACING * 2) - headerHeight - footerHeight;\n            currentStepBody.css({\n                'max-height': maxHeight + 'px',\n                'overflow': 'auto',\n            });\n        }\n        currentStepNode.offset({\n            top: top,\n            left: Math.ceil((viewportWidth - stepWidth) / 2)\n        });\n    }\n\n    /**\n     * Position the step on the page.\n     *\n     * @method  positionStep\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    positionStep(stepConfig) {\n        let content = this.currentStepNode;\n        let thisT = this;\n        if (!content || !content.length) {\n            // Unable to find the step node.\n            return this;\n        }\n\n        stepConfig.placement = this.recalculatePlacement(stepConfig);\n        let flipBehavior;\n        switch (stepConfig.placement) {\n            case 'left':\n                flipBehavior = ['left', 'right', 'top', 'bottom'];\n                break;\n            case 'right':\n                flipBehavior = ['right', 'left', 'top', 'bottom'];\n                break;\n            case 'top':\n                flipBehavior = ['top', 'bottom', 'right', 'left'];\n                break;\n            case 'bottom':\n                flipBehavior = ['bottom', 'top', 'right', 'left'];\n                break;\n            default:\n                flipBehavior = 'flip';\n                break;\n        }\n\n        let target = this.getStepTarget(stepConfig);\n        var config = {\n            placement: stepConfig.placement + '-start',\n            removeOnDestroy: true,\n            modifiers: {\n                flip: {\n                    behaviour: flipBehavior,\n                },\n                arrow: {\n                    element: '[data-role=\"arrow\"]',\n                },\n            },\n            onCreate: function(data) {\n                recalculateArrowPosition(data);\n                recalculateStepPosition(data);\n            },\n            onUpdate: function(data) {\n                recalculateArrowPosition(data);\n                if (thisT.possitionNeedToBeRecalculated) {\n                    thisT.recalculatedNo++;\n                    thisT.possitionNeedToBeRecalculated = false;\n                    recalculateStepPosition(data);\n                }\n            },\n        };\n\n        let recalculateArrowPosition = function(data) {\n            let placement = data.placement.split('-')[0];\n            const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n            const arrowElement = data.instance.popper.querySelector('[data-role=\"arrow\"]');\n            const stepElement = $(data.instance.popper.querySelector('[data-role=\"flexitour-step\"]'));\n            if (isVertical) {\n                let arrowHeight = parseFloat(window.getComputedStyle(arrowElement).height);\n                let arrowOffset = parseFloat(window.getComputedStyle(arrowElement).top);\n                let popperHeight = parseFloat(window.getComputedStyle(data.instance.popper).height);\n                let popperOffset = parseFloat(window.getComputedStyle(data.instance.popper).top);\n                let popperBorderWidth = parseFloat(stepElement.css('borderTopWidth'));\n                let popperBorderRadiusWidth = parseFloat(stepElement.css('borderTopLeftRadius')) * 2;\n                let arrowPos = arrowOffset + (arrowHeight / 2);\n                let maxPos = popperHeight + popperOffset - popperBorderWidth - popperBorderRadiusWidth;\n                let minPos = popperOffset + popperBorderWidth + popperBorderRadiusWidth;\n                if (arrowPos >= maxPos || arrowPos <= minPos) {\n                    let newArrowPos = 0;\n                    if (arrowPos > (popperHeight / 2)) {\n                        newArrowPos = maxPos - arrowHeight;\n                    } else {\n                        newArrowPos = minPos + arrowHeight;\n                    }\n                    $(arrowElement).css('top', newArrowPos);\n                }\n            } else {\n                let arrowWidth = parseFloat(window.getComputedStyle(arrowElement).width);\n                let arrowOffset = parseFloat(window.getComputedStyle(arrowElement).left);\n                let popperWidth = parseFloat(window.getComputedStyle(data.instance.popper).width);\n                let popperOffset = parseFloat(window.getComputedStyle(data.instance.popper).left);\n                let popperBorderWidth = parseFloat(stepElement.css('borderTopWidth'));\n                let popperBorderRadiusWidth = parseFloat(stepElement.css('borderTopLeftRadius')) * 2;\n                let arrowPos = arrowOffset + (arrowWidth / 2);\n                let maxPos = popperWidth + popperOffset - popperBorderWidth - popperBorderRadiusWidth;\n                let minPos = popperOffset + popperBorderWidth + popperBorderRadiusWidth;\n                if (arrowPos >= maxPos || arrowPos <= minPos) {\n                    let newArrowPos = 0;\n                    if (arrowPos > (popperWidth / 2)) {\n                        newArrowPos = maxPos - arrowWidth;\n                    } else {\n                        newArrowPos = minPos + arrowWidth;\n                    }\n                    $(arrowElement).css('left', newArrowPos);\n                }\n            }\n        };\n\n        const recalculateStepPosition = function(data) {\n            const placement = data.placement.split('-')[0];\n            const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n            const popperElement = $(data.instance.popper);\n            const targetElement = $(data.instance.reference);\n            const arrowElement = popperElement.find('[data-role=\"arrow\"]');\n            const stepElement = popperElement.find('[data-role=\"flexitour-step\"]');\n            const viewportHeight = $(window).height();\n            const viewportWidth = $(window).width();\n            const arrowHeight = parseFloat(arrowElement.outerHeight(true));\n            const popperHeight = parseFloat(popperElement.outerHeight(true));\n            const targetHeight = parseFloat(targetElement.outerHeight(true));\n            const arrowWidth = parseFloat(arrowElement.outerWidth(true));\n            const popperWidth = parseFloat(popperElement.outerWidth(true));\n            const targetWidth = parseFloat(targetElement.outerWidth(true));\n            let maxHeight;\n\n            if (thisT.recalculatedNo > 1) {\n                // The current screen is too small, and cannot fit with the original placement.\n                // We should set the placement to auto so the PopperJS can calculate the perfect placement.\n                thisT.currentStepPopper.options.placement = isVertical ? 'auto-left' : 'auto-bottom';\n            }\n            if (thisT.recalculatedNo > 2) {\n                // Return here to prevent recursive calling.\n                return;\n            }\n\n            if (isVertical) {\n                // Find the best place to put the tour: Left of right.\n                const leftSpace = targetElement.offset().left > 0 ? targetElement.offset().left : 0;\n                const rightSpace = viewportWidth - leftSpace - targetWidth;\n                const remainingSpace = leftSpace >= rightSpace ? leftSpace : rightSpace;\n                maxHeight = viewportHeight - MINSPACING * 2;\n                if (remainingSpace < (popperWidth + arrowWidth)) {\n                    const maxWidth = remainingSpace - MINSPACING - arrowWidth;\n                    if (maxWidth > 0) {\n                        popperElement.css({\n                            'max-width': maxWidth + 'px',\n                        });\n                        // Not enough space, flag true to make Popper to recalculate the position.\n                        thisT.possitionNeedToBeRecalculated = true;\n                    }\n                } else if (maxHeight < popperHeight) {\n                    // Check if the Popper's height can fit the viewport height or not.\n                    // If not, set the correct max-height value for the Popper element.\n                    popperElement.css({\n                        'max-height': maxHeight + 'px',\n                    });\n                }\n            } else {\n                // Find the best place to put the tour: Top of bottom.\n                const topSpace = targetElement.offset().top > 0 ? targetElement.offset().top : 0;\n                const bottomSpace = viewportHeight - topSpace - targetHeight;\n                const remainingSpace = topSpace >= bottomSpace ? topSpace : bottomSpace;\n                maxHeight = remainingSpace - MINSPACING - arrowHeight;\n                if (remainingSpace < (popperHeight + arrowHeight)) {\n                    // Not enough space, flag true to make Popper to recalculate the position.\n                    thisT.possitionNeedToBeRecalculated = true;\n                }\n            }\n\n            // Check if the Popper's height can fit the viewport height or not.\n            // If not, set the correct max-height value for the body.\n            const currentStepBody = stepElement.find('[data-placeholder=\"body\"]').first();\n            const headerEle = stepElement.find('.modal-header').first();\n            const footerEle = stepElement.find('.modal-footer').first();\n            const headerHeight = headerEle.outerHeight(true) ?? 0;\n            const footerHeight = footerEle.outerHeight(true) ?? 0;\n            maxHeight = maxHeight - headerHeight - footerHeight;\n            if (maxHeight > 0) {\n                headerEle.removeClass('minimal');\n                footerEle.removeClass('minimal');\n                currentStepBody.css({\n                    'max-height': maxHeight + 'px',\n                    'overflow': 'auto',\n                });\n            } else {\n                headerEle.addClass('minimal');\n                footerEle.addClass('minimal');\n            }\n            // Call the Popper update method to update the position.\n            thisT.currentStepPopper.update();\n        };\n\n        let background = $('[data-flexitour=\"step-background\"]');\n        if (background.length) {\n            target = background;\n        }\n        this.currentStepPopper = new Popper(target, content[0], config);\n\n        return this;\n    }\n\n    /**\n     * For left/right placement, checks that there is room for the step at current window size.\n     *\n     * If there is not enough room, changes placement to 'top'.\n     *\n     * @method  recalculatePlacement\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @return  {String}                    The placement after recalculate\n     */\n    recalculatePlacement(stepConfig) {\n        const buffer = 10;\n        const arrowWidth = 16;\n        let target = this.getStepTarget(stepConfig);\n        let widthContent = this.currentStepNode.width() + arrowWidth;\n        let targetOffsetLeft = target.offset().left - buffer;\n        let targetOffsetRight = target.offset().left + target.width() + buffer;\n        let placement = stepConfig.placement;\n\n        if (['left', 'right'].indexOf(placement) !== -1) {\n            if ((targetOffsetLeft < (widthContent + buffer)) &&\n                ((targetOffsetRight + widthContent + buffer) > document.documentElement.clientWidth)) {\n                placement = 'top';\n            }\n        }\n        return placement;\n    }\n\n    /**\n     * Add the backdrop.\n     *\n     * @method  positionBackdrop\n     * @param   {Object}    stepConfig      The step configuration of the step\n     * @chainable\n     * @return {Object} this.\n     */\n    positionBackdrop(stepConfig) {\n        if (stepConfig.backdrop) {\n            this.currentStepConfig.hasBackdrop = true;\n            let backdrop = $('<div data-flexitour=\"backdrop\"></div>');\n\n            if (stepConfig.zIndex) {\n                if (stepConfig.attachPoint === 'append') {\n                    stepConfig.attachTo.append(backdrop);\n                } else {\n                    backdrop.insertAfter(stepConfig.attachTo);\n                }\n            } else {\n                $('body').append(backdrop);\n            }\n\n            if (this.isStepActuallyVisible(stepConfig)) {\n                // The step has a visible target.\n                // Punch a hole through the backdrop.\n                let background = $('[data-flexitour=\"step-background\"]');\n                if (!background.length) {\n                    background = $('<div data-flexitour=\"step-background\"></div>');\n                }\n\n                let targetNode = this.getStepTarget(stepConfig);\n\n                let buffer = 10;\n\n                let colorNode = targetNode;\n                if (buffer) {\n                    colorNode = $('body');\n                }\n\n                let drawertop = 0;\n                if (targetNode.parents('[data-usertour=\"scroller\"]').length) {\n                    const scrollerElement = targetNode.parents('[data-usertour=\"scroller\"]');\n                    const navigationBuffer = scrollerElement.offset().top;\n                    if (scrollerElement.scrollTop() >= navigationBuffer) {\n                        drawertop = scrollerElement.scrollTop() - navigationBuffer;\n                        background.css({\n                            position: 'fixed'\n                        });\n                    }\n                }\n\n                background.css({\n                    width: targetNode.outerWidth() + buffer + buffer,\n                    height: targetNode.outerHeight() + buffer + buffer,\n                    left: targetNode.offset().left - buffer,\n                    top: targetNode.offset().top + drawertop - buffer,\n                    backgroundColor: this.calculateInherittedBackgroundColor(colorNode),\n                });\n\n                if (targetNode.offset().left < buffer) {\n                    background.css({\n                        width: targetNode.outerWidth() + targetNode.offset().left + buffer,\n                        left: targetNode.offset().left,\n                    });\n                }\n\n                if ((targetNode.offset().top + drawertop) < buffer) {\n                    background.css({\n                        height: targetNode.outerHeight() + targetNode.offset().top + buffer,\n                        top: targetNode.offset().top,\n                    });\n                }\n\n                let targetRadius = targetNode.css('borderRadius');\n                if (targetRadius && targetRadius !== $('body').css('borderRadius')) {\n                    background.css('borderRadius', targetRadius);\n                }\n\n                let targetPosition = this.calculatePosition(targetNode);\n                if (targetPosition === 'absolute') {\n                    background.css('position', 'fixed');\n                }\n\n                let fader = background.clone();\n                fader.css({\n                    backgroundColor: backdrop.css('backgroundColor'),\n                    opacity: backdrop.css('opacity'),\n                });\n                fader.attr('data-flexitour', 'step-background-fader');\n\n                if (!stepConfig.zIndex) {\n                    let targetClone = targetNode.clone();\n                    background.append(targetClone.first());\n                    $('body').append(fader);\n                    $('body').append(background);\n                } else {\n                    if (stepConfig.attachPoint === 'append') {\n                        stepConfig.attachTo.append(background);\n                    } else {\n                        fader.insertAfter(stepConfig.attachTo);\n                        background.insertAfter(stepConfig.attachTo);\n                    }\n                }\n\n                // Add the backdrop data to the actual target.\n                // This is the part which actually does the work.\n                targetNode.attr('data-flexitour', 'step-backdrop');\n\n                if (stepConfig.zIndex) {\n                    backdrop.css('zIndex', stepConfig.zIndex);\n                    background.css('zIndex', stepConfig.zIndex + 1);\n                    targetNode.css('zIndex', stepConfig.zIndex + 2);\n                }\n\n                fader.fadeOut('2000', function() {\n                    $(this).remove();\n                });\n            }\n        }\n        return this;\n    }\n\n    /**\n     * Calculate the inheritted z-index.\n     *\n     * @method  calculateZIndex\n     * @param   {jQuery}    elem                        The element to calculate z-index for\n     * @return  {Number}                                Calculated z-index\n     */\n    calculateZIndex(elem) {\n        elem = $(elem);\n        if (this.requireDefaultTourZindex(elem)) {\n            return 0;\n        }\n        while (elem.length && elem[0] !== document) {\n            // Ignore z-index if position is set to a value where z-index is ignored by the browser\n            // This makes behavior of this function consistent across browsers\n            // WebKit always returns auto if the element is positioned.\n            let position = elem.css(\"position\");\n            if (position === \"absolute\" || position === \"fixed\") {\n                // IE returns 0 when zIndex is not specified\n                // other browsers return a string\n                // we ignore the case of nested elements with an explicit value of 0\n                // <div style=\"z-index: -10;\"><div style=\"z-index: 0;\"></div></div>\n                let value = parseInt(elem.css(\"zIndex\"), 10);\n                if (!isNaN(value) && value !== 0) {\n                    return value;\n                }\n            }\n            elem = elem.parent();\n        }\n\n        return 0;\n    }\n\n    /**\n     * Check if the element require the default tour z-index.\n     *\n     * Some page elements have fixed z-index. However, their weight is not enough to cover\n     * other page elements like the top navbar or a sticky footer so they use the default\n     * tour z-index instead.\n     *\n     * @param {jQuery} elem the page element to highlight\n     * @return {Boolean} true if the element requires the default tour z-index instead of the calculated one\n     */\n    requireDefaultTourZindex(elem) {\n        if (elem.parents('[data-region=\"fixed-drawer\"]').length !== 0) {\n            return true;\n        }\n        return false;\n    }\n\n    /**\n     * Calculate the inheritted background colour.\n     *\n     * @method  calculateInherittedBackgroundColor\n     * @param   {jQuery}    elem                        The element to calculate colour for\n     * @return  {String}                                Calculated background colour\n     */\n    calculateInherittedBackgroundColor(elem) {\n        // Use a fake node to compare each element against.\n        let fakeNode = $('<div>').hide();\n        $('body').append(fakeNode);\n        let fakeElemColor = fakeNode.css('backgroundColor');\n        fakeNode.remove();\n\n        elem = $(elem);\n        while (elem.length && elem[0] !== document) {\n            let color = elem.css('backgroundColor');\n            if (color !== fakeElemColor) {\n                return color;\n            }\n            elem = elem.parent();\n        }\n\n        return null;\n    }\n\n    /**\n     * Calculate the inheritted position.\n     *\n     * @method  calculatePosition\n     * @param   {jQuery}    elem                        The element to calculate position for\n     * @return  {String}                                Calculated position\n     */\n    calculatePosition(elem) {\n        elem = $(elem);\n        while (elem.length && elem[0] !== document) {\n            let position = elem.css('position');\n            if (position !== 'static') {\n                return position;\n            }\n            elem = elem.parent();\n        }\n\n        return null;\n    }\n\n    /**\n     * Perform accessibility changes for step shown.\n     *\n     * This will add aria-hidden=\"true\" to all siblings and parent siblings.\n     *\n     * @method  accessibilityShow\n     */\n    accessibilityShow() {\n        let stateHolder = 'data-has-hidden';\n        let attrName = 'aria-hidden';\n        let hideFunction = function(child) {\n            let flexitourRole = child.data('flexitour');\n            if (flexitourRole) {\n                switch (flexitourRole) {\n                    case 'container':\n                    case 'target':\n                        return;\n                }\n            }\n\n            let hidden = child.attr(attrName);\n            if (!hidden) {\n                child.attr(stateHolder, true);\n                Aria.hide(child);\n            }\n        };\n\n        this.currentStepNode.siblings().each(function(index, node) {\n            hideFunction($(node));\n        });\n        this.currentStepNode.parentsUntil('body').siblings().each(function(index, node) {\n            hideFunction($(node));\n        });\n    }\n\n    /**\n     * Perform accessibility changes for step hidden.\n     *\n     * This will remove any newly added aria-hidden=\"true\".\n     *\n     * @method  accessibilityHide\n     */\n    accessibilityHide() {\n        let stateHolder = 'data-has-hidden';\n        let showFunction = function(child) {\n            let hidden = child.attr(stateHolder);\n            if (typeof hidden !== 'undefined') {\n                child.removeAttr(stateHolder);\n                Aria.unhide(child);\n            }\n        };\n\n        $('[' + stateHolder + ']').each(function(index, node) {\n            showFunction($(node));\n        });\n    }\n};\n\nexport default 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\ No newline at end of file
diff --git a/admin/tool/usertours/amd/src/tour.js b/admin/tool/usertours/amd/src/tour.js
index 01140fd553402..4908e2658429b 100644
--- a/admin/tool/usertours/amd/src/tour.js
+++ b/admin/tool/usertours/amd/src/tour.js
@@ -1642,7 +1642,7 @@ const Tour = class {
                 });
                 fader.attr('data-flexitour', 'step-background-fader');
 
-                if (targetNode.parents('[data-region="fixed-drawer"]').length || !stepConfig.zIndex) {
+                if (!stepConfig.zIndex) {
                     let targetClone = targetNode.clone();
                     background.append(targetClone.first());
                     $('body').append(fader);
@@ -1683,6 +1683,9 @@ const Tour = class {
      */
     calculateZIndex(elem) {
         elem = $(elem);
+        if (this.requireDefaultTourZindex(elem)) {
+            return 0;
+        }
         while (elem.length && elem[0] !== document) {
             // Ignore z-index if position is set to a value where z-index is ignored by the browser
             // This makes behavior of this function consistent across browsers
@@ -1704,6 +1707,23 @@ const Tour = class {
         return 0;
     }
 
+    /**
+     * Check if the element require the default tour z-index.
+     *
+     * Some page elements have fixed z-index. However, their weight is not enough to cover
+     * other page elements like the top navbar or a sticky footer so they use the default
+     * tour z-index instead.
+     *
+     * @param {jQuery} elem the page element to highlight
+     * @return {Boolean} true if the element requires the default tour z-index instead of the calculated one
+     */
+    requireDefaultTourZindex(elem) {
+        if (elem.parents('[data-region="fixed-drawer"]').length !== 0) {
+            return true;
+        }
+        return false;
+    }
+
     /**
      * Calculate the inheritted background colour.
      *