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"use strict";var isNodeJS=typeof module!=="undefined"&&typeof module.exports!=="undefined"?true:false;if(isNodeJS){module.exports={}}(function(){var HideAddonUtils={allowedKeys:["targetElementId","hidden"],getAutoInitElements:function(){var elements=document.getElementsByClassName("bib--hide-init");return[].slice.call(elements)},handleNodeData:function(key,value){if(value==="true")return true;if(value==="false")return false;return value},elementToInitParams:function(element){var allowedKeys=HideAddonUtils.allowedKeys;var isDOMElement=BibblioUtils.isDOMElement(element);var dataset=isDOMElement?element.dataset:element;var acc={options:{targetElement:isDOMElement?element:document.getElementById(dataset.targetElementId)}};var initParams=allowedKeys.reduce(function(acc,key){if(dataset&&dataset[key]){acc["options"][key]=HideAddonUtils.handleNodeData(key,dataset[key])}return acc},acc);return initParams},getParams:function(element){var params=HideAddonUtils.elementToInitParams(element);return params},parseAddonData:function(element){var params=HideAddonUtils.getParams(element);return{options:params["options"]}},prepareAddonOptions:function(options){if(options&&options.targetElementId&&!options.targetElement){options.targetElement=document.getElementById(options.targetElementId)}return options},shouldBeHidden:function(options){var validHiddenOptions=["web","mobile"];var isValidHiddenOption=validHiddenOptions.indexOf(options.hidden)!==-1;if(options.hidden&&isValidHiddenOption){var vw=Math.max(document.documentElement.clientWidth||0,window.innerWidth||0);var vh=Math.max(document.documentElement.clientHeight||0,window.innerHeight||0);var isWeb=vw>414&&vh>414||vw>850&&vh<=414;var isMobile=vw<=414||vw<=850&&vh<=414;if(isWeb){return options.hidden==="web"}else if(isMobile){return options.hidden==="mobile"}}return true},registerState:function(options){var BibblioState=isNodeJS?module.exports.BibblioStateManager:window.BibblioStateManager;var state={type:"HideAddon",options:Object.assign({},options)};delete state.options.targetElement;BibblioState.set(options.targetElement,state)},renderHTML:function(options,callbacks){var element=options.targetElement;if(HideAddonUtils.shouldBeHidden(options)){element.classList.add("bib--hide");console.log("Bibblio: Hide add-on and its children will not be rendered")}if(callbacks&&callbacks.loaderNextStep&&typeof callbacks.loaderNextStep==="function"){callbacks.loaderNextStep()}}};var HideAddon={init:function(options,callbacks){options=HideAddonUtils.prepareAddonOptions(options);HideAddonUtils.renderHTML(options,callbacks);HideAddonUtils.registerState(options)},_initForLoader:function(element,loaderCallback){var element=BibblioUtils.isDOMElement(element)?element:element.options;var callbacks={loaderNextStep:loaderCallback};var addonData=HideAddonUtils.parseAddonData(element);HideAddon.init(addonData.options,callbacks)}};if(isNodeJS===true){module.exports.BibblioHideAddon=HideAddon}else{window.BibblioHideAddon=HideAddon}})();(function(){var TakeOverAddonTemplates={main:'<div class="bib__takeover">              <div class="bib__scrim"></div>              <div class="bib__modal-sheet">                <div class="bib__modal-sheet-panel"></div>                <div class="bib__modal-sheet-tab">%tabText%</div>             </div>           </div>'};var TakeoverAddonUtils={previousStyles:{},allowedKeys:["targetElementId","tabText","callbackOnInitEnd"],getAutoInitElements:function(){var elements=document.getElementsByClassName("bib--takeover-init");return[].slice.call(elements)},parseAddonData:function(element){var params=TakeoverAddonUtils.getParams(element);return{options:params["options"],callbacks:params["callbacks"]}},getParams:function(element){var params=TakeoverAddonUtils.elementToInitParams(element);return params},handleNodeData:function(key,value){if(value==="true")return true;if(value==="false")return false;return value},hasClass:function(element,name){return(" "+element.className+" ").indexOf(" "+name+" ")>-1},getTakeoverPanelElement:function(element){return element.querySelector("div.bib__takeover")},addClass:function(element,name){var arr=element.className.split(" ");if(arr.indexOf(name)==-1){element.className+=" "+name}},removeClass:function(element,name){var className=element.className;var classes=className.split(" ");classes.splice(classes.indexOf(name),1);var newClassName=classes.join(" ");element.className=newClassName},changeStyle:function(bodyElement,key,value){TakeoverAddonUtils.previousStyles[key]=bodyElement.style[key];bodyElement.style[key]=value},resetStyle:function(bodyElement,key){bodyElement.style[key]=TakeoverAddonUtils.previousStyles[key]},getModalSheetTabElement:function(element){return element.querySelector("div.bib__modal-sheet-tab")},getScrimElement:function(element){return element.querySelector("div.bib__scrim")},getBodyElement:function(){return document.getElementsByTagName("body")[0]},closureCallback:function(element,callback){return function(){return callback(element)}},registerTabElementActions:function(takeoverPanelElement,modalSheetTabElement,bodyElement){modalSheetTabElement.addEventListener("click",TakeoverAddonUtils.closureCallback(takeoverPanelElement,function(takeoverPanelElement){var visbilityToggleClass="bib--open";var takeOverPanelElement=TakeoverAddonUtils.getTakeoverPanelElement(takeoverPanelElement);var isTakeoverPanelElementOpen=TakeoverAddonUtils.hasClass(takeOverPanelElement,visbilityToggleClass);if(isTakeoverPanelElementOpen){TakeoverAddonUtils.removeClass(takeOverPanelElement,visbilityToggleClass);TakeoverAddonUtils.resetStyle(bodyElement,"overflow")}else{TakeoverAddonUtils.addClass(takeOverPanelElement,visbilityToggleClass);TakeoverAddonUtils.changeStyle(bodyElement,"overflow","hidden")}}))},registerScrimElementActions:function(takeoverPanelElement,scrimElement,bodyElement){scrimElement.addEventListener("click",TakeoverAddonUtils.closureCallback(takeoverPanelElement,function(takeoverPanelElement){var visbilityToggleClass="bib--open";var takeOverPanelElement=TakeoverAddonUtils.getTakeoverPanelElement(takeoverPanelElement);var isTakeoverPanelElementOpen=TakeoverAddonUtils.hasClass(takeOverPanelElement,visbilityToggleClass);if(isTakeoverPanelElementOpen){TakeoverAddonUtils.removeClass(takeOverPanelElement,visbilityToggleClass);TakeoverAddonUtils.resetStyle(bodyElement,"overflow")}else{TakeoverAddonUtils.addClass(takeOverPanelElement,visbilityToggleClass);TakeoverAddonUtils.changeStyle(bodyElement,"overflow","hidden")}}))},elementToInitParams:function(element){var allowedKeys=TakeoverAddonUtils.allowedKeys;var isDOMElement=BibblioUtils.isDOMElement(element);var dataset=isDOMElement?element.dataset:element;var acc={callbacks:{},options:{targetElement:isDOMElement?element:document.getElementById(dataset.targetElementId)}};var initParams=allowedKeys.reduce(function(acc,key){if(dataset&&dataset[key]){switch(key){case"callbackOnInitEnd":acc["callbacks"]["onInitEnd"]=dataset[key];break;default:acc["options"][key]=TakeoverAddonUtils.handleNodeData(key,dataset[key]);break}}return acc},acc);return initParams},prepareAddonOptions:function(options){if(options&&options.targetElementId&&!options.targetElement){options.targetElement=document.getElementById(options.targetElementId)}return options},getTabTextTemplate:function(template,options){var tabText=options.tabText&&options.tabText!==""?options.tabText:"Related articles";return template.replace("%tabText%",tabText)},handleCallbackFn:function(fn,params){if(fn){try{if(typeof fn==="string"||fn instanceof String){fn=window[fn]}if(typeof fn==="function"){fn.apply(null,params)}}catch(err){console.error(err)}}},registerState:function(options){var BibblioState=isNodeJS?module.exports.BibblioStateManager:window.BibblioStateManager;var state={type:"TakeoverAddon",options:Object.assign({},options)};delete state.options.targetElement;BibblioState.set(options.targetElement,state)},renderHTML:function(element,options){if(element.children){var temp=document.createElement("div");[].slice.call(element.children).forEach(function(item,index){temp.appendChild(item)})}element.innerHTML=TakeoverAddonUtils.getTabTextTemplate(TakeOverAddonTemplates.main,options);if(element.children){var container=element.querySelector(".bib__modal-sheet-panel");[].slice.call(temp.children).forEach(function(item,index){temp.appendChild(item);container.appendChild(item)})}},registerEventHandlers:function(element,callback){var modalSheetTabElement=TakeoverAddonUtils.getModalSheetTabElement(element);var scrimElement=TakeoverAddonUtils.getScrimElement(element);var bodyElement=TakeoverAddonUtils.getBodyElement();TakeoverAddonUtils.registerTabElementActions(element,modalSheetTabElement,bodyElement);TakeoverAddonUtils.registerScrimElementActions(element,scrimElement,bodyElement);if(callback&&typeof callback==="function"){callback()}}};var TakeoverAddon={init:function(options,callbacks){var callbacks=callbacks||{};var options=TakeoverAddonUtils.prepareAddonOptions(options);var element=options.targetElement;TakeoverAddonUtils.renderHTML(element,options);TakeoverAddonUtils.registerState(options);TakeoverAddonUtils.registerEventHandlers(element,options);if(callbacks&&callbacks.loaderNextStep&&typeof callbacks.loaderNextStep==="function"){callbacks.loaderNextStep()}TakeoverAddonUtils.handleCallbackFn(callbacks.onInitEnd,[options,element])},_initForLoader:function(element,loaderCallback){var element=BibblioUtils.isDOMElement(element)?element:element.options;var addonData=TakeoverAddonUtils.parseAddonData(element);var callbacks=addonData.callbacks||{};callbacks.loaderNextStep=loaderCallback;TakeoverAddon.init(addonData.options,callbacks)}};if(isNodeJS===true){module.exports.BibblioTakeoverAddon=TakeoverAddon;module.exports.BibblioTakeoverAddonUtils=TakeoverAddonUtils;module.exports.BibblioTakeoverAddonTemplates=TakeOverAddonTemplates}else{window.BibblioTakeoverAddon=TakeoverAddon;window.BibblioTakeoverAddonUtils=TakeoverAddonUtils;window.BibblioTakeoverAddonTemplates=TakeOverAddonTemplates}})();(function(){function limitExecutionRate(func,delay){var timer;var context=this;return function(){var args=arguments;clearTimeout(timer);timer=setTimeout(function(){return func.apply(context,args)},delay)}}var Bibblio={moduleVersion:"4.24.4",moduleTracking:{},isAmp:false,recommendationsLimit:6,autoInit:function(){BibblioUtils.delayExecution(function(){var rcmSrcElement=BibblioUtils.getSrcElement();BibblioUtils.initScriptParamIngestion(rcmSrcElement)})},init:function(elements){BibblioUtils.delayExecution(function(){var elementsWithClasses=BibblioUtils.getElementsWithClasses(elements);BibblioLoader.callNestedInitFunctions(elementsWithClasses)})},import:function(options){options.autoIngestion=true;BibblioUtils.ingestFromScriptParam(options)},showModules:function(){var modules=document.getElementsByClassName("bib__module");[].forEach.call(modules,function(element){element.classList.remove("bib--hide")})},_initForLoader:function(element,loaderCallback){BibblioUtils.delayExecution(function(){var moduleData=BibblioUtils.parseModuleData(element);Bibblio.initRelatedContent(moduleData.options,moduleData.callbacks)});if(loaderCallback&&typeof loaderCallback==="function"){loaderCallback()}},initRelatedContent:function(options,callbacks){if(!BibblioUtils.validateModuleOptions(options))return;var url=window.location.href;callbacks=callbacks||{};var moduleOptions=BibblioUtils.prepareModuleOptions(options);var targetElement=options.targetElementId?document.getElementById(options.targetElementId):options.targetElement;var elementIsVisible=BibblioUtils.isElementVisible(targetElement);var isAmp=BibblioUtils.isAmp(url);if(elementIsVisible===true||isAmp===true){Bibblio.getRelatedContentItems(moduleOptions,callbacks)}else{var elementsToWatch=BibblioUtils.getElementAndParents(targetElement);BibblioUtils.watchForAttributeModifications(elementsToWatch,targetElement,moduleOptions,callbacks)}},getRelatedContentItems:function(options,callbacks){var moduleSettings=BibblioUtils.getModuleSettings(options);var subtitleField=moduleSettings.subtitleField;var accessToken=options.recommendationKey;var itemLimitOffset=options.offset===undefined?0:options.offset;var itemLimit=Bibblio.recommendationsLimit+itemLimitOffset;var fields=BibblioUtils.getRecommendationFields(subtitleField);var url=BibblioUtils.getRecommendationUrl(options,itemLimit,1,fields);BibblioUtils.bibblioHttpGetRequest(url,accessToken,true,function(response,status){Bibblio.handleRecsResponse(options,callbacks,response,status);if(status===404||status===412||status===422){console.log("Bibblio: Fetching Global Popularity Recs after receiving HTTP status "+status);var popularOptions=JSON.parse(JSON.stringify(options));popularOptions.targetElement=options.targetElement;popularOptions.recommendationType="popular";delete popularOptions.contentItemId;delete popularOptions.customUniqueIdentifier;var popularUrl=BibblioUtils.getRecommendationUrl(popularOptions,Bibblio.recommendationsLimit,1,fields);BibblioUtils.bibblioHttpGetRequest(popularUrl,accessToken,true,function(response,status){Bibblio.handleRecsResponse(popularOptions,callbacks,response,status)})}})},handleRecsResponse:function(options,callbacks,recommendationsResponse,status){if(options.autoIngestion){if(status===404){var timeout=Math.floor(Math.random()*500);setTimeout(function(){if(!Bibblio.createScrapeRequestCalled){Bibblio.createScrapeRequest(options)}},timeout)}}if(status===200){Bibblio.renderModule(options,callbacks,recommendationsResponse)}else if(status===412){console.info("Bibblio: Awaiting indexing. This delay will only occur until some click events have been processed. Recommendations will thereafter be available immediately on ingestion.")}return status},createScrapeRequest:function(options){Bibblio.createScrapeRequestCalled=true;var href;var canonical=BibblioUtils.getCanonicalUrl(options);if(options.autoIngestionUrl){href=options.autoIngestionUrl}else{href=canonical?canonical:BibblioUtils.getWindowLocation()}if(!options.customUniqueIdentifier){return}if(!href){console.error("Bibblio: Cannot determine url to scrape.");return false}else{href=BibblioUtils.stripUrlTrackingParameters(href)}var accessToken=options.recommendationKey;var scrapeRequest={customUniqueIdentifier:options.customUniqueIdentifier,url:href};if(options.autoIngestionCatalogueId){scrapeRequest.catalogueId=options.autoIngestionCatalogueId}if(options.autoIngestionCustomCatalogueId){scrapeRequest.customCatalogueId=options.autoIngestionCustomCatalogueId}var url="https://api.bibblio.org/v1/content-item-url-ingestions/";BibblioUtils.bibblioHttpPostRequest(url,accessToken,scrapeRequest,true,function(response,status){Bibblio.handleCreatedScrapeRequest(response,status,options)})},handleCreatedScrapeRequest:function(response,status,options){if(status==422&&response.errors.url=="domain is not whitelisted"){console.error("Bibblio: This page could not be ingested because the domain has not been whitelisted for auto ingestion.")}else if(status==422&&response.errors.customUniqueIdentifier=="customUniqueIdentifier must be unique or null"){console.info("Bibblio: This page has been queued for ingestion. Please note that a 404 response to GET /recommendations is normal. This tells us that the item does not exist and should be ingested. The 422 on POST /url-ingestions is also normal. It tells us that the item has already been queued for ingestion by a prior page load.")}else if(status==201){console.info("Bibblio: This page has been queued for ingestion. Please note that a 404 response to GET /recommendations is normal. This tells us that the item does not exist and should be ingested.")}},renderModule:function(options,callbacks,recommendationsResponse){var relatedContentItems=recommendationsResponse.results.slice(options.offset);var tiles=BibblioUtils.getTemplateTiles(options.placeholders,relatedContentItems);var moduleSettings=BibblioUtils.getModuleSettings(options);var relatedContentItemContainer=options.targetElement;var moduleHTML=BibblioTemplates.getModuleHTML(tiles,options,moduleSettings);relatedContentItemContainer.innerHTML=moduleHTML;if(callbacks.onRecommendationsRendered){try{callbacks.onRecommendationsRendered(relatedContentItems)}catch(err){console.error(err)}}Bibblio.initTracking(options,callbacks,recommendationsResponse);BibblioUtils.loadModuleImages(options,recommendationsResponse)},initTracking:function(options,callbacks,recommendationsResponse){var trackingLink=recommendationsResponse._links.tracking.href;var activityId=BibblioUtils.getActivityId(trackingLink);var requestedRecsType=BibblioUtils.getChildProperty(recommendationsResponse,"_status.recommendationType.requested");var returnedRecsType=BibblioUtils.getChildProperty(recommendationsResponse,"_status.recommendationType.returned");BibblioUtils.createModuleTrackingEntry(activityId,requestedRecsType,returnedRecsType);BibblioUtils.bindContentItemsClickEvents(options,callbacks,recommendationsResponse);BibblioUtils.setOnViewedListeners(options,callbacks,recommendationsResponse)}};var BibblioUtils={getTemplateTiles:function(placeholders,recommendations){var tiles=(recommendations||[]).map(function(rec){return{type:"recTile",value:rec}});var insertTile=function(index,data){tiles.splice(index-1,0,data)};if(Array.isArray(placeholders)){for(var i=0;i<placeholders.length;i++){if(placeholders[i]>0){insertTile(placeholders[i],{type:"emptyTile"})}}}else if(typeof placeholders==="object"&&placeholders!==null){Object.keys(placeholders).forEach(function(key){var index=parseInt(key);if(index&&index>0){var value=placeholders[key];if(typeof placeholders==="object"&&placeholders!==null){insertTile(index,{type:"customRecTile",value:{fields:{author:{name:value.author||""},name:value.title||"",description:value.description||"",url:value.url||"",moduleImage:{contentUrl:value.moduleImage||""},datePublished:value.date||""}}})}}})}return tiles},isInUrl:function(url,string){var hasString=url.indexOf(string)>-1;return hasString},getSrcElement:function(){return document.getElementById("bib--rcm-src")},getAutoInitElements:function(){var elements=document.getElementsByClassName("bib--rcm-init");return[].slice.call(elements)},getElementsWithClasses:function(elements){var elementsWithClasses=elements.map(function(element){var klassList=[];switch(element.type){case"rcm":klassList=["bib--rcm-init"];break;case"hide":klassList=["bib--hide-init"];break;case"takeover":klassList=["bib--takeover-init"];break}element.classList=klassList;return element});return elementsWithClasses},getOptionsAndCallbacks:function(element,options,callbacks){return options.targetElementId?{options:options,callbacks:callbacks}:BibblioUtils.parseModuleData(element)},getElementAndParents:function(element){var elements=[];while(element){elements.unshift(element);element=element.parentNode}return elements},watchForAttributeModifications:function(elementsToWatch,rcmTargetElement,options,callbacks){window.MutationObserver=window.MutationObserver||window.WebKitMutationObserver||window.MozMutationObserver;if(window.MutationObserver){var config={attributes:true};var observers=[];var callback=function(mutationsList,observer){var data=BibblioUtils.getOptionsAndCallbacks(rcmTargetElement,options,callbacks);observers.forEach(function(obs){obs.disconnect()});Bibblio.initRelatedContent(data.options,data.callbacks)};observers=elementsToWatch.map(function(el){var obs=new MutationObserver(callback);obs.observe(el,config);return obs})}},isElementVisible:function(element){var visible=false;if(element!==null){var computedDisplayAttr=window.getComputedStyle(element).getPropertyValue("display");visible=computedDisplayAttr!=="none"?true:false}return visible},isAmp:function(url){return BibblioUtils.isInUrl(url,"#amp=1")},isIntOrStringInt:function(val){return!isNaN(val)&&val.toString()===parseInt(val).toString()},numIsInRange:function(num,start,end){return num>=start&&num<=end},validateModuleOptions:function(options){if(!options.recommendationKey){console.error("Bibblio: Please provide a recommendation key for the recommendationKey value in the options parameter.");return false}if(options.autoIngestion&&options.recommendationType==="popular"){console.error("Bibblio: auto-ingestion cannot be enabled on a module serving popular recommendations. Please auto-ingest with a module serving 'optimised' or 'related' recommendations instead.");return false}if(options.autoIngestion&&options.recommendationType==="personalised"){console.error("Bibblio: auto-ingestion cannot be enabled on a module serving personalised recommendations. Please auto-ingest with a module serving 'optimised' or 'related' recommendations instead.");return false}if(!options.userId&&options.recommendationType==="personalised"){console.error("Bibblio: Please provide a userId when requesting personalised recommendations.");return false}if(!options.userId&&options.userMetadata){console.error("Bibblio: userId must be present if userMetadata is supplied.");return false}if(options.contentItemId&&options.customUniqueIdentifier){console.error("Bibblio: Cannot supply both contentItemId and customUniqueIdentifier.");return false}if(options.contentItemId&&options.recommendationType==="personalised"){console.error("Bibblio: contentItemId cannot be supplied when serving personalised recommendations.");return false}if(options.customUniqueIdentifier&&options.recommendationType==="personalised"){console.error("Bibblio: customUniqueIdentifier cannot be supplied when serving personalised recommendations.");return false}if(!options.urlParamIngestion){if(!options.targetElementId&&!options.targetElement){console.error("Bibblio: Please provide a value for targetElementId in the options parameter.");return false}}if(options.recommendationType==="popular"&&(options.contentItemId||options.customUniqueIdentifier)){console.error("Bibblio: Cannot supply a contentItemId or customUniqueIdentifier when specifying a recommendationType of 'popular'.");return false}if(options.catalogueIds&&options.customCatalogueIds){console.error("Bibblio: Cannot supply both catalogueIds and customCatalogueIds.");return false}if(options.autoIngestionCatalogueId&&options.autoIngestionCustomCatalogueId){console.error("Bibblio: Cannot supply both autoIngestionCatalogueId and autoIngestionCustomCatalogueId.");return false}if(options.autoIngestionCatalogueId&&options.recommendationType==="personalised"){console.error("Bibblio: autoIngestionCatalogueId cannot be supplied when serving personalised recommendations.");return false}if(options.autoIngestionCustomCatalogueId&&options.recommendationType==="personalised"){console.error("Bibblio: autoIngestionCustomCatalogueId cannot be supplied when serving personalised recommendations.");return false}if(options.corpusType==="syndicated"&&options.catalogueIds){console.error("Bibblio: catalogueIds cannot be supplied when serving syndicated recommendations.");return false}if(options.corpusType==="syndicated"&&options.customCatalogueIds){console.error("Bibblio: customCatalogueIds cannot be supplied when serving syndicated recommendations.");return false}if(options.offset&&(!BibblioUtils.isIntOrStringInt(options.offset)||!BibblioUtils.numIsInRange(parseInt(options.offset),1,14))){console.error("Bibblio: offset must be an integer between 1 and 14.");return false}if(options.placeholders&&typeof options.placeholders==="object"&&!Array.isArray(options.placeholders)){var validPlaceholders=Object.keys(options.placeholders).every(function(key){return options.placeholders[key].title&&options.placeholders[key].url});if(!validPlaceholders){console.error("Bibblio: placeholders object must contain 'title' and 'url' fields.");return false}}return true},isUserMetadataParam:function(param){return/^userMetadata\[(.+)\]$/.test(param)},cleanAmpUserMetadata:function(options){var ampOptions={};for(var param in options){if(BibblioUtils.isUserMetadataParam(param)){var cleanFirst=param.slice(13);var newParam=cleanFirst.substring(0,cleanFirst.length-1);if(newParam!==""){ampOptions[newParam]=options[param]}}}return ampOptions},convertInitParamUserMetadata:function(metadata){var cleanParams=metadata.split(/&/g);var params={};for(param in cleanParams){var param=cleanParams[param];var key=param.split("=")[0];var value=param.split("=")[1];if(value.indexOf("#")>-1){var cleanedValue=value.split("#")[0];params[key]=cleanedValue}else{params[key]=value}}return params},getWindowLocation:function(){return typeof window!=="undefined"&&window.location&&window.location.href?window.location.href:""},getParameterByName:function(name,url){if(!url)url=window.location.href;name=name.replace(/[\[\]]/g,"\\$&");var regex=new RegExp("[?&]"+name+"(=([^&#]*)|&|#|$)"),results=regex.exec(url);if(!results)return null;if(!results[2])return"";return decodeURIComponent(results[2].replace(/\+/g," "))},convertCommasToSpaces:function(str){if(!str)return null;var styleClasses=str.replace(/,/g," ");return styleClasses},createParamsObj:function(url){var queryStringParams=url.split("?")[1];var cleanParams=queryStringParams.split(/&/g);var params={};for(param in cleanParams){var param=cleanParams[param];var key=param.split("=")[0];var value=param.split("=")[1];if(value.indexOf("#")>-1){var cleanedValue=value.split("#")[0];params[key]=cleanedValue}else{params[key]=value}}return params},createQueryStringObj:function(params,options){var diffArray=Object.keys(params).filter(function(k){return params[k]!==options[k]});var diffObject=Object.assign({},diffArray);var queryStringObj={};if(Object.keys(diffObject).length>-1){for(var key=0;key<Object.keys(diffObject).length;key++){var param=diffObject[key];queryStringObj[param]=params[param]}}return queryStringObj},prepareModuleOptions:function(options){var isDOMElement=BibblioUtils.isDOMElement(options.targetElement);if(options&&!options.contentItemId&&!options.customUniqueIdentifier&&options.recommendationType!=="popular"&&options.recommendationType!=="personalised"){var canonicalUrl=BibblioUtils.getCustomUniqueIdentifierFromUrl(options);if(canonicalUrl){options.customUniqueIdentifier=BibblioUtils.getCustomUniqueIdentifierFromUrl(options)}}if(!isDOMElement){options.targetElement=document.getElementById(options.targetElementId)}if(options&&options.targetElementId&&!options.targetElement){options.targetElement=document.getElementById(options.targetElementId)}if(options&&options.moduleId){if(typeof options.moduleId!=="string"){options.moduleId=JSON.stringify(options.moduleId)}}else{if(options.targetElement&&options.targetElement.id){options.moduleId=options.targetElement.id}else{var moduleId=BibblioUtils.createModuleId(options);if(moduleId){options.moduleId=moduleId}}}if(options&&options.catalogueIds){options.catalogueIds=BibblioUtils.cleanCommaSeparatedParams(options.catalogueIds)}if(options&&options.customCatalogueIds){options.customCatalogueIds=BibblioUtils.cleanCommaSeparatedParams(options.customCatalogueIds)}if(options&&options.placeholders&&typeof options.placeholders==="string"){options.placeholders=BibblioUtils.cleanCommaSeparatedParams(options.placeholders)}if(options.offset===undefined){options.offset=0}else{options.offset=parseInt(options.offset)}if(options&&typeof options.lazyLoad==="string"){options.lazyLoad=options.lazyLoad==="false"?false:true}return options},allowedKeys:["amp","autoIngestion","autoIngestionUrl","autoIngestionCatalogueId","autoIngestionCustomCatalogueId","urlParamIngestion","catalogueIds","customCatalogueIds","contentItemId","corpusType","customUniqueIdentifier","dateFormat","hidden","moduleId","offset","placeholders","queryStringParams","recommendationKey","recommendationType","styleClasses","stylePreset","subtitleField","targetElementId","truncateTitle","userMetadata","userId","callback","lazyLoad"],parseModuleData:function(element){var url=window.location.href;var isDOMElement=BibblioUtils.isDOMElement(element);Bibblio.isAmp=BibblioUtils.isInUrl(url,"#amp=1");var options={};var callbacks={};if(Bibblio.isAmp){options=BibblioUtils.getAmpAutoInitParams(url);callbacks=BibblioUtils.ampCallbacks}else if(!isDOMElement&&element.options){options=BibblioUtils.getParams(element.options);callbacks=element.callbacks?element.callbacks:{}}else{options=BibblioUtils.getParams(element)}return{options:options,callbacks:callbacks}},getAmpAutoInitParams:function(url){var params={};var targetElement=BibblioUtils.findInitElements()[0];if(targetElement){params=BibblioUtils.getAmpParams(url,targetElement)}return params},getAmpParams:function(url,targetElement){var ampParams=BibblioUtils.getAmpOptions(url);ampParams.autoIngestionUrl=document.referrer;ampParams.targetElement=targetElement;return ampParams},getParams:function(element){var params=BibblioUtils.elementToInitParams(element);return params},findInitElements:function(){return document.getElementsByClassName("bib--rcm-init")},handleNodeData:function(key,value){switch(key){case"queryStringParams":var queryStringParameters={};var pairs=value.split("&");pairs.forEach(function(pair){var keyValueTuple=pair.split("=");queryStringParameters[keyValueTuple[0]]=keyValueTuple[1]});return queryStringParameters;case"customCatalogueIds":case"catalogueIds":return value.split(",");case"placeholders":return value.split(",");case"userMetadata":return BibblioUtils.convertInitParamUserMetadata(value);case"offset":if(value===undefined){return 0}else{return parseInt(value)}case"truncateTitle":return parseInt(value);case"lazyLoad":return value==="false"?false:true;default:break}if(value==="true")return true;if(value==="false")return false;return value},isDOMElement:function(obj){try{return obj instanceof HTMLElement}catch(e){return typeof obj==="object"&&obj.nodeType===1&&typeof obj.style==="object"&&typeof obj.ownerDocument==="object"}},elementToInitParams:function(element){var allowedKeys=BibblioUtils.allowedKeys;var isElementDOM=BibblioUtils.isDOMElement(element);var dataset=isElementDOM?element.dataset:element;var initParams=allowedKeys.reduce(function(acc,key){if(dataset&&dataset.hasOwnProperty(key)){acc[key]=isElementDOM?BibblioUtils.handleNodeData(key,dataset[key]):dataset[key]}return acc},{targetElement:element});return initParams},checkAndSetAmpUserMetadata:function(options){var hasMetadata=false;for(var param in options.queryStringParams){if(BibblioUtils.isUserMetadataParam(param)){hasMetadata=true}}if(hasMetadata){options.userMetadata=BibblioUtils.cleanAmpUserMetadata(options.queryStringParams);for(var param in options.queryStringParams){if(BibblioUtils.isUserMetadataParam(param)){delete options.queryStringParams[param]}}return options}else{return options}},getAmpOptions:function(url){var allowedKeys=BibblioUtils.allowedKeys;var options={};for(var index in allowedKeys){var name=allowedKeys[index];var queryParam=BibblioUtils.getParameterByName(name,url);if(queryParam!=null){queryParam=queryParam==="false"?false:queryParam;queryParam=queryParam==="true"?true:queryParam;if(name=="styleClasses"||name=="stylePreset"){queryParam=BibblioUtils.convertCommasToSpaces(queryParam)}if(name=="catalogueIds"||name=="customCatalogueIds"){queryParam=queryParam.split(",")}options[name]=queryParam}}options["queryStringParams"]=BibblioUtils.getQueryStringParams(options,url);options=BibblioUtils.checkAndSetAmpUserMetadata(options);options["targetElementId"]="bibRelatedContentModule";return options},submitAmpEmbedSize:function(h,w){window.parent.postMessage({sentinel:"amp",type:"embed-size",height:h,width:w},"*")},ampCallbacks:{onRecommendationsRendered:function(recsData){BibblioUtils.submitAmpEmbedSize(document.body.scrollHeight,document.body.scrollWidth);window.parent.postMessage({sentinel:"amp",type:"embed-ready"},"*");window.addEventListener("orientationchange",function(){BibblioUtils.submitAmpEmbedSize(document.body.scrollHeight,document.body.scrollWidth)},false)}},filterOptions:function(options){return Object.keys(options).filter(function(key){return BibblioUtils.allowedKeys.indexOf(key)>-1}).reduce(function(obj,key){obj[key]=BibblioUtils.handleNodeData(key,options[key]);return obj},{})},ingestFromScriptParam:function(options){if(options.autoIngestion===true){options.urlParamIngestion=true}else{return}if(!BibblioUtils.validateModuleOptions(options)){return}else{options.customUniqueIdentifier=options.customUniqueIdentifier?options.customUniqueIdentifier:BibblioUtils.getCustomUniqueIdentifierFromUrl(options);Bibblio.createScrapeRequest(options)}},initScriptParamIngestion:function(element){if(element&&element.dataset){var options=BibblioUtils.filterOptions(element.dataset);BibblioUtils.ingestFromScriptParam(options)}},getRecommendationFields:function(subtitleField){var fields=["name","url","moduleImage","datePublished","author"];if(subtitleField)fields.push(BibblioUtils.getRootProperty(subtitleField));return fields},base64Encode:function(data){if(typeof data==="object"){data=JSON.stringify(data)}if(isNodeJS){return Buffer.from(data).toString("base64")}else{return btoa(data)}},safelyEncodeQueryParam:function(data){return encodeURI(BibblioUtils.base64Encode(data))},createMetadataQueryString:function(userMetadata){var queryString="";for(var param in userMetadata){var newParams="userMetadata["+param+"]="+userMetadata[param];if(queryString.indexOf("userMetadata")>-1){newParams="&"+newParams;queryString+=newParams}else{queryString+=newParams}}return queryString},cleanCommaSeparatedParams:function(params){return params.map(function(param){if(typeof param==="string"){return param.trim()}return param})},getRecommendationUrl:function(options,limit,page,fields){var baseUrl="https://api.bibblio.org/v1";var recommendationType=options.recommendationType?options.recommendationType:null;var corpusType=options.corpusType?options.corpusType:null;var catalogueIds=options.catalogueIds?options.catalogueIds:[];var customCatalogueIds=options.customCatalogueIds?options.customCatalogueIds:[];var userId=options.userId;var userMetadata=options.userMetadata?options.userMetadata:null;var querystringArgs=["limit="+limit,"page="+page,"fields="+fields.join(",")];if(userMetadata){var queryString=BibblioUtils.createMetadataQueryString(userMetadata);querystringArgs.push(queryString)}if(options.contentItemId)querystringArgs.push("contentItemId="+options.contentItemId);else if(options.customUniqueIdentifier)querystringArgs.push("customUniqueIdentifier="+options.customUniqueIdentifier);if(catalogueIds.length>0){querystringArgs.push("catalogueIds="+catalogueIds.join(","))}if(customCatalogueIds.length>0){querystringArgs.push("customCatalogueIds="+customCatalogueIds.join(","))}if(userId){querystringArgs.push("userId="+userId)}if(corpusType==="syndicated"){querystringArgs.push("corpusType="+corpusType);recommendationType="optimised"}var moduleSettings=BibblioUtils.getModuleSettings(options);var encodedModuleSettings=BibblioUtils.safelyEncodeQueryParam(moduleSettings);querystringArgs.push("moduleSettings="+encodedModuleSettings);querystringArgs.push("moduleVersion="+Bibblio.moduleVersion);var addons=BibblioUtils.getParentAddons(options.targetElement);if(addons){var encodedAddons=BibblioUtils.safelyEncodeQueryParam(addons);querystringArgs.push("moduleAddons="+encodedAddons)}if(options.moduleId){querystringArgs.push("moduleId="+options.moduleId)}switch(recommendationType){case"related":return baseUrl+"/recommendations/related?"+querystringArgs.join("&");case"popular":return baseUrl+"/recommendations/popular?"+querystringArgs.join("&");case"personalised":return baseUrl+"/recommendations/personalised?"+querystringArgs.join("&");default:return baseUrl+"/recommendations?"+querystringArgs.join("&")}},getQueryStringParams:function(options,url){if(url.indexOf("?")!==-1){var params=BibblioUtils.createParamsObj(url);params.styleClasses=options.styleClasses;params.stylePreset=options.stylePreset;return BibblioUtils.createQueryStringObj(params,options)}else{return{}}},stripUrlTrackingParameters:function(url){var parser=document.createElement("a");parser.href=url;var params=parser.search;if(params.charAt(0)==="?"){params=params.substr(1)}params=params.split("#")[0];if(params){params=params.split("&");var paramsToRemoveMatch=["utm","_utm","_ga","fb_","hmb_","ref_"];var paramsToRemoveSpecific=["buffer_share","_hsenc","_hsmi","_openstat","action_object_map","action_ref_map","action_type_map","aff_platform","aff_trace_key","campaignId","elqTrack","elqTrackId","fref","gs_l","hc_location","mkt_tok","recipientId","ref","terminal_id","yclid"];params=params.filter(function(param){var paramName=param.split("=")[0].toLowerCase();if(paramsToRemoveSpecific.indexOf(paramName)!==-1){return false}for(var i=paramsToRemoveMatch.length-1;i>=0;i--){if(paramName.indexOf(paramsToRemoveMatch[i])===0){return false}}return true})}if(params.length>0){params.sort();parser.search="?"+params.join("&")}else{parser.search=""}return parser.href},getCanonicalUrl:function(options){if(options&&options.canonical!==undefined){var url=options.canonical;return url}else{var elem=document.querySelector('link[rel="canonical"]');return elem?elem.getAttribute("href"):null}},getCustomUniqueIdentifierFromUrl:function(options){var url=BibblioUtils.getCanonicalUrl(options);if(!url){console.error("Exception: Unable to determine canonical URL for retrieving recommendations or auto ingestion. Please see https://github.com/bibblio/related-content-module#customuniqueidentifier-required-if-no-contentitemid-is-provided on how to specify a customUniqueIdentifier, or see https://support.google.com/webmasters/answer/139066?hl=en to add a canonical URL tag.");return false}else{return url}},validateCustomUniqueIdentifier:function(str){if(str&&str.indexOf("https://")===0||str.indexOf("http://")===0||str.indexOf("//")===0){return false}else{return str}},getPresetModuleClasses:function(stylePreset){var presets={"grid-4":"bib--grd-4 bib--wide","box-5":"bib--box-5 bib--wide","box-6":"bib--box-6 bib--wide","row-3":"bib--row-3"};return presets[stylePreset]||presets["row-3"]},linkRelFor:function(url){var currentdomain=window.location.hostname;var matches=BibblioUtils.getDomainName(currentdomain)==BibblioUtils.getDomainName(url);return matches?"":' rel="nofollow noopener noreferrer" '},linkTargetFor:function(url){if(Bibblio.isAmp){return"_top"}else{var currentdomain=window.location.hostname;var matches=BibblioUtils.getDomainName(currentdomain)==BibblioUtils.getDomainName(url);return matches?"_self":"_blank"}},linkHrefFor:function(url,queryStringParams){if(!queryStringParams||typeof queryStringParams!=="object"||Object.keys(queryStringParams).length===0)return url;var queryStringParamsList=[];var param;Object.keys(queryStringParams).forEach(function(key){param=encodeURIComponent(key)+"="+encodeURIComponent(queryStringParams[key]);queryStringParamsList.push(param)});var urlSegments=url.split("#");if(urlSegments[0].indexOf("?")==-1)urlSegments[0]+="?";else urlSegments[0]+="&";urlSegments[0]+=queryStringParamsList.join("&");return urlSegments.join("#")},addClass:function(element,name){var arr=element.className.split(" ");if(arr.indexOf(name)==-1){element.className+=" "+name}},showModuleImages:function(options){var parentElement=options.targetElement||document;parentElement.querySelectorAll(".bib__image--ratio").forEach(function(imageElement){var imageUrl=imageElement.getAttribute("data-deferred-image");if(imageUrl&&!imageElement.style.backgroundImage){imageElement.removeAttribute("data-deferred-image");imageElement.style.backgroundImage="url('"+imageUrl+"')"}BibblioUtils.addClass(imageElement,"bib__image")})},loadModuleImages:function(options,recommendationsResponse){var isInt=function(intValue){return intValue===parseInt(intValue,10)};var onScrollPoll=function(){var moduleElement=options.targetElement;var scrollPositionY=window.pageYOffset||document.body.scrollTop;var scrollPositionX=window.pageXOffset||document.body.scrollLeft;var shouldRenderModuleImages=!isInt(scrollPositionY)||!isInt(scrollPositionX)||(scrollPositionY!==0||scrollPositionX!==0)||moduleElement.getBoundingClientRect&&BibblioUtils.isRecommendationTileInView(moduleElement,moduleElement.getBoundingClientRect());if(shouldRenderModuleImages){BibblioUtils.showModuleImages(options);return}setTimeout(onScrollPoll,100)};if(options.lazyLoad===false){BibblioUtils.showModuleImages(options)}else{onScrollPoll()}},getActivityId:function(trackingLink){trackingLink=trackingLink||"";var activityId=trackingLink.replace("https://","").replace("http://","").replace(/v[0-9]\//g,"").replace("api.bibblio.org/activities/","");return activityId},createModuleTrackingEntry:function(activityId,requestedRecsType,returnedRecsType){Bibblio.moduleTracking[activityId]={trackedRecommendations:[],hasModuleBeenViewed:false,requestedRecommendationType:requestedRecsType,returnedRecommendationType:returnedRecsType}},bindContentItemsClickEvents:function(options,callbacks,recommendationsResponse){var container=options.targetElement;if(container){var relatedContentItemlinks=container.getElementsByClassName("bib__link");var callback=callbacks.onRecommendationClick;for(var i=0;i<relatedContentItemlinks.length;i++){var tileType=relatedContentItemlinks[i].getAttribute("tile-type");if(tileType==="recTile"){relatedContentItemlinks[i].addEventListener("click",function(event){BibblioEvents.onRecommendationClick(options,recommendationsResponse,event,callback)},false);relatedContentItemlinks[i].addEventListener("mousedown",function(event){if(event.which==3)BibblioEvents.onRecommendationClick(options,recommendationsResponse,event,callback)},false);relatedContentItemlinks[i].addEventListener("mouseup",function(event){if(event.which<4){BibblioEvents.onRecommendationClick(options,recommendationsResponse,event,callback)}},false);relatedContentItemlinks[i].addEventListener("auxclick",function(event){if(event.which<4){BibblioEvents.onRecommendationClick(options,recommendationsResponse,event,callback)}},false);relatedContentItemlinks[i].addEventListener("keydown",function(event){if(event.which==13){BibblioEvents.onRecommendationClick(options,recommendationsResponse,event,callback)}},false)}}}},hasRecommendationBeenClicked:function(activityId,clickedContentItemId){var moduleTrackedRecommendations=Bibblio.moduleTracking[activityId]["trackedRecommendations"];return moduleTrackedRecommendations.indexOf(clickedContentItemId)!==-1},addTrackedRecommendation:function(activityId,clickedContentItemId){var moduleTrackedRecommendations=Bibblio.moduleTracking[activityId]["trackedRecommendations"];moduleTrackedRecommendations.push(clickedContentItemId)},setOnViewedListeners:function(options,callbacks,recommendationsResponse){var moduleViewedEvent=function(options,callbacks,recommendationsResponse){var callback=callbacks.onRecommendationViewed?callbacks.onRecommendationViewed:null;BibblioEvents.onRecommendationViewed(options,recommendationsResponse,callback)};var moduleElement=options.targetElement;var trackingLink=recommendationsResponse._links.tracking.href;var activityId=BibblioUtils.getActivityId(trackingLink);var visibilityTimeout=5;if(Bibblio.isAmp){var handleMessage=limitExecutionRate(function(message){var messageType=[message.data.sentinel,message.data.type].join(":");if(messageType=="amp:intersection"){if(BibblioUtils.hasModuleBeenViewed(activityId)){window.removeEventListener("message",handleMessage,true);return}if(BibblioUtils.isRecommendationTileInView(moduleElement,message.data.changes[0].boundingClientRect,message.data.changes[0].intersectionRatio)){moduleViewedEvent(options,callbacks,recommendationsResponse)}}},visibilityTimeout);window.parent.postMessage({sentinel:"amp",type:"send-intersections"},"*");window.addEventListener("message",handleMessage,true)}else{var pollInterval=200;var pollForViewedEvents=function(){if(!BibblioUtils.hasModuleBeenViewed(activityId)){if(BibblioUtils.isRecommendationTileInView(moduleElement,moduleElement.getBoundingClientRect())){moduleViewedEvent(options,callbacks,recommendationsResponse)}else{setTimeout(pollForViewedEvents,pollInterval)}}};pollForViewedEvents()}},isRecommendationTileInView:function(container,boundingClientRect,visibleRatio){if(container){var tiles=container.getElementsByClassName("bib__link");var scrollableParents=BibblioUtils.getScrollableParents(container,boundingClientRect);if(scrollableParents!==false){for(var i=0;i<tiles.length;i++){if(BibblioUtils.isTileVisible(tiles[i],scrollableParents,visibleRatio))return true}}}return false},getScrollableParents:function(moduleElement,moduleRect){if(moduleRect.top==0&&moduleRect.bottom==0)return false;var moduleStyle=window.getComputedStyle(moduleElement);if(moduleStyle.getPropertyValue("visibility")==="hidden")return false;var parent=moduleElement.parentNode;var parentStyle,parentRect,isScrollable;var scrollableParents=[];while(parent!==document.body){parentStyle=window.getComputedStyle(parent);if(parentStyle.getPropertyValue("visibility")==="hidden")return false;isScrollable=BibblioUtils.hasScrollableOverflow(parentStyle.getPropertyValue("overflow-x"))||BibblioUtils.hasScrollableOverflow(parentStyle.getPropertyValue("overflow-y"));if(isScrollable){parentRect=parent.getBoundingClientRect();scrollableParents.push({rect:parentRect,width:parentRect.right-parentRect.left,height:parentRect.bottom-parentRect.top,style:parentStyle})}parent=parent.parentNode}return scrollableParents},isTileVisible:function(tile,scrollableParents,visibleRatio){if(typeof visibleRatio==="undefined"){visibleRatio=1}var tileRect=tile.getBoundingClientRect();var tileWidth=tileRect.right-tileRect.left;var tileHeight=tileRect.bottom-tileRect.top;if(tileHeight==0)return false;var isInVerticleView,isInHorizontalView;isInVerticleView=tileHeight<=window.innerHeight*visibleRatio&&tileRect.bottom<=window.innerHeight;isInHorizontalView=tileWidth<=window.innerWidth&&tileRect.right<=window.innerWidth;if(!isInVerticleView||!isInHorizontalView)return false;var parent,parentRect;for(var i=0;i<scrollableParents.length;i++){parent=scrollableParents[i];parentRect=parent.rect;isInVerticleView=tileHeight<=parent.height&&tileRect.bottom<=parentRect.bottom;isInHorizontalView=tileWidth<=parent.width&&tileRect.right<=parentRect.right;if(!isInVerticleView||!isInHorizontalView)return false}return true},hasScrollableOverflow:function(overflowProp){return overflowProp==="scroll"||overflowProp==="auto"||overflowProp==="hidden"},hasModuleBeenViewed:function(activityId){return Bibblio.moduleTracking[activityId]["hasModuleBeenViewed"]},setModuleViewed:function(activityId){Bibblio.moduleTracking[activityId]["hasModuleBeenViewed"]=true},getRequestedRecommendationType:function(activityId){return Bibblio.moduleTracking[activityId]["requestedRecommendationType"]},getReturnedRecommendationType:function(activityId){return Bibblio.moduleTracking[activityId]["returnedRecommendationType"]},getChildProperty:function(obj,path){if(typeof obj==="object"&&typeof path==="string"){var arr=path.split(".");while(arr.length&&(obj=obj[arr.shift()]));return obj}else{return undefined}},getModuleSettings:function(options){var moduleSettings={};moduleSettings.stylePreset=options.stylePreset||"default";moduleSettings.styleClasses=options.styleClasses||false;moduleSettings.subtitleField=options.subtitleField?options.subtitleField:"description";moduleSettings.dateFormat=options.dateFormat?options.dateFormat:"DMY";moduleSettings.truncateTitle=options.truncateTitle?options.truncateTitle:null;moduleSettings.hidden=options.hidden||false;return moduleSettings},getDomainName:function(url){var r=/^(?:https?:\/\/)?(?:www\.)?(.[^/]+)/;var matchResult=url.match(r);return url.match(r)?matchResult[1].replace("www.",""):""},getRootProperty:function(accessor){if(accessor==false||accessor==undefined){return accessor}else{return accessor.split(".")[0]}},bibblioHttpGetRequest:function(url,accessToken,isAsync,callback){var options={url:url,method:"GET",accessToken:accessToken};BibblioUtils.bibblioHttpRequest(options,isAsync,callback)},bibblioHttpPostRequest:function(url,accessToken,body,isAsync,callback){var options={url:url,method:"POST",accessToken:accessToken,body:body};BibblioUtils.bibblioHttpRequest(options,isAsync,callback)},bibblioHttpRequest:function(options,isAsync,callback){var url=options.url;var method=options.method;var accessToken=options.accessToken;if(isNodeJS){var https=require("https");var baseUrl="https://api.bibblio.org";var path=url.replace(baseUrl,"");var hostname=baseUrl.replace("https://","");var httpOptions={hostname:hostname,path:path,method:method,headers:{"Content-Type":"application/json"}};if(accessToken){httpOptions.headers.Authorization="Bearer "+accessToken}if(method=="POST")httpOptions.body=JSON.stringify(options.body);var req=https.request(httpOptions,function(response){var responseText="";response.on("data",function(dataChunk){responseText+=dataChunk});response.on("end",function(){try{var responseObject=JSON.parse(responseText);BibblioUtils.httpCallback(callback,responseObject,response.statusCode)}catch(err){BibblioUtils.httpCallback(callback,{},response.statusCode)}})});req.on("error",function(e){BibblioUtils.httpCallback(callback,{},response.statusCode)});if(method=="POST"){var requestBody=JSON.stringify(options.body);req.write(requestBody)}req.end()}else{var xmlhttp=new XMLHttpRequest;xmlhttp.onreadystatechange=function(){if(xmlhttp.readyState===4){try{var response;if(xmlhttp.getResponseHeader("content-type")=="application/json"){response=JSON.parse(xmlhttp.responseText)}BibblioUtils.httpCallback(callback,response,xmlhttp.status)}catch(err){BibblioUtils.httpCallback(callback,{},xmlhttp.status)}}};xmlhttp.open(method,url,isAsync);xmlhttp.setRequestHeader("Content-Type","application/json");if(accessToken)xmlhttp.setRequestHeader("Authorization","Bearer "+accessToken);if(method=="POST"){var requestBody=JSON.stringify(options.body);xmlhttp.send(requestBody)}else xmlhttp.send()}},httpCallback:function(callback,response,status){if(callback!=null&&typeof callback==="function"){callback(response,status)}},monthName:function(monthNum){var month=[];month[1]="January";month[2]="February";month[3]="March";month[4]="April";month[5]="May";month[6]="June";month[7]="July";month[8]="August";month[9]="September";month[10]="October";month[11]="November";month[12]="December";var monthNum=parseInt(monthNum);return month[monthNum]},getItemRecData:function(recsData,contentItemId){return recsData.filter(function(element){return element["contentItemId"]==contentItemId})[0]},getModuleStyleClasses:function(moduleSettings){return moduleSettings.styleClasses?moduleSettings.styleClasses:BibblioUtils.getPresetModuleClasses(moduleSettings.stylePreset)},shouldTruncate:function(field,styles){switch(field){case"title":return styles.indexOf("bib--txt")===-1&&styles.indexOf("bib--tall")===-1&&styles.indexOf("bib--split")===-1}return true},getTruncationLengthForStyle:function(styles){if(styles.indexOf("bib--square")!==-1){return 110}else if(styles.indexOf("bib--wide")!==-1){return 70}else{return 90}},truncateTitle:function(name,styles,override){var truncationLength=override||BibblioUtils.getTruncationLengthForStyle(styles);var extraCutOffLength=10;var shouldTruncate=name.length>truncationLength+extraCutOffLength&&BibblioUtils.shouldTruncate("title",styles);if(shouldTruncate){return name.substring(0,truncationLength)+"…"}else{return name}},truncateText:function(text,minCharacters,maxCharacters){if(text.length<=minCharacters)return text;var truncatedText=text.substring(0,maxCharacters);var fullStopIndex=truncatedText.indexOf(".",minCharacters);if(fullStopIndex===-1)return text.substring(0,minCharacters)+"…";return text.substring(0,fullStopIndex+1)},truncateSubtitle:function(subtitle,styles){var truncateLength=130;var searchBounds=10;var subtitleLength=subtitle.length;if(subtitleLength>truncateLength&&BibblioUtils.shouldTruncate("subtitle",styles)){return BibblioUtils.truncateText(subtitle,truncateLength-searchBounds,truncateLength+searchBounds)}return subtitle},hash32:function(str){var hash=0;var strlen=str.length;var i;var c;for(i=0;i<strlen;i++){c=str.charCodeAt(i);hash=(hash<<5)-hash+c;hash=hash&hash}if(hash<1){hash=hash*-1}return parseInt(hash).toString(16)},createModuleId:function(data){if(data){if(typeof data!=="string"){data=JSON.stringify(data)}var hash=BibblioUtils.hash32(data);hash=hash+BibblioUtils.hash32(hash+data);hash=hash+BibblioUtils.hash32(hash+data);hash=hash+BibblioUtils.hash32(hash+data);hash=("0"+hash).substr(-32,32);return hash}},getParentAddons:function(element){var addons=[];var addonTypes=["HideAddon","TakeoverAddon"];while(element){var BibblioState=isNodeJS?module.exports.BibblioStateManager:window.BibblioStateManager;var state=BibblioState.get(element);if(state&&state.type&&addonTypes.indexOf(state.type)>-1){var addon={type:state.type,options:state.options};addons.unshift(addon)}element=element.parentNode}if(addons.length>0){return addons}},delayExecution:function(fn){setTimeout(fn,0)}};var BibblioEvents={onRecommendationClick:function(options,recommendationsResponse,event,callback){var clickedContentItemId=event.currentTarget.getAttribute("data");var moduleSettings=BibblioUtils.getModuleSettings(options);var relatedContentItems=recommendationsResponse.results;var trackingLink=recommendationsResponse._links.tracking.href;var sourceContentItemId=recommendationsResponse._links.sourceContentItem?recommendationsResponse._links.sourceContentItem.id:null;var activityId=BibblioUtils.getActivityId(trackingLink);var userId=options.userId?options.userId:null;var userMetadata=options.userMetadata?options.userMetadata:null;var requestedRecsType=BibblioUtils.getRequestedRecommendationType(activityId);var returnedRecsType=BibblioUtils.getReturnedRecommendationType(activityId);var addons=BibblioUtils.getParentAddons(options.targetElement);var activityData=BibblioActivity.constructOnClickedActivityData({sourceContentItemId:sourceContentItemId,clickedContentItemId:clickedContentItemId,clickedContentItemHref:event.currentTarget.getAttribute("href"),catalogueIds:options.catalogueIds,relatedContentItems:relatedContentItems,instrument:{type:"BibblioRelatedContent",version:Bibblio.moduleVersion,config:moduleSettings,moduleId:options.moduleId,addons:addons},userId:userId,userMetadata:userMetadata,requestedRecommendationType:requestedRecsType,returnedRecommendationType:returnedRecsType});if(!BibblioUtils.hasRecommendationBeenClicked(activityId,clickedContentItemId)){var response=BibblioActivity.track(trackingLink,activityData);BibblioUtils.addTrackedRecommendation(activityId,clickedContentItemId);if(callback!=null&&typeof callback==="function"){var clickedItemData=BibblioUtils.getItemRecData(relatedContentItems,clickedContentItemId);callback(clickedItemData,event)}}},onRecommendationViewed:function(options,recommendationsResponse,callback){var trackingLink=recommendationsResponse._links.tracking.href;var activityId=BibblioUtils.getActivityId(trackingLink);var addons=BibblioUtils.getParentAddons(options.targetElement);if(!BibblioUtils.hasModuleBeenViewed(activityId)){var moduleSettings=BibblioUtils.getModuleSettings(options);var relatedContentItems=recommendationsResponse.results;var sourceContentItemId=recommendationsResponse._links.sourceContentItem?recommendationsResponse._links.sourceContentItem.id:null;BibblioUtils.setModuleViewed(activityId);var userId=options.userId?options.userId:null;var userMetadata=options.userMetadata?options.userMetadata:null;var requestedRecsType=BibblioUtils.getRequestedRecommendationType(activityId);var returnedRecsType=BibblioUtils.getReturnedRecommendationType(activityId);var activityData=BibblioActivity.constructOnViewedActivityData({sourceContentItemId:sourceContentItemId,catalogueIds:options.catalogueIds,relatedContentItems:relatedContentItems,instrument:{type:"BibblioRelatedContent",version:Bibblio.moduleVersion,config:moduleSettings,moduleId:options.moduleId,addons:addons},userId:userId,userMetadata:userMetadata,requestedRecommendationType:requestedRecsType,returnedRecommendationType:returnedRecsType});var response=BibblioActivity.trackAsync(trackingLink,activityData);if(callback!=null&&typeof callback==="function"){callback(activityData)}}}};var BibblioTemplates={outerModuleTemplate:'<div class="bib__module <% classes %>">                            <% recommendedContentItems %>                          </div>',relatedContentItemTemplate:'<a href="<% linkHref %>" target="<% linkTarget %>" <% linkRel %> data="<% contentItemId %>" tile-type="<% tileType %>" class="bib__link bib__link--image">                                    <span class="bib__image--ratio" data-deferred-image="<% linkImageUrl %>" >                                    </span>                                    <span class="bib__info">                                        <span class="bib__title">                                          <span class="bib__name"><% name %></span>                                        </span>                                        <span class="bib__properties">                                          <% authorHTML %>                                          <% datePublishedHTML %>                                          <% siteHTML %>                                        </span>                                        <span class="bib__preview">                                          <% subtitleHTML %>                                        </span>                                    </span>                                    </a>',emptyTileTemplate:'<div class="bib__placeholder"></div>',subtitleTemplate:'<span class="bib__description"><% subtitle %></span>',authorTemplate:'<span class="bib__author"><% author %></span>',siteTemplate:'<span class="bib__site"><% domain %></span>',datePublishedTemplate:'<span class="bib__recency"><% datePublished %></span>',getTemplate:function(template,options){Object.keys(options).forEach(function(key){template=template.split("<% "+key+" %>").join(options[key])});var placeHolderStart=template.indexOf("<%");while(placeHolderStart!=-1){var placeHolderEnd=template.indexOf("%>",placeHolderStart);var placeHolder=template.substring(placeHolderStart,placeHolderEnd+2);template=template.replace(placeHolder,"");placeHolderStart=template.indexOf("<%")}return template},getSubtitleHTML:function(contentItem,moduleSettings){var subtitleField=BibblioUtils.getChildProperty(contentItem.fields,moduleSettings.subtitleField);var subtitleHTML="";if(subtitleField){var styleClasses=BibblioUtils.getModuleStyleClasses(moduleSettings);var truncatedSubtitle=BibblioUtils.truncateSubtitle(subtitleField,styleClasses);var templateOptions={subtitle:truncatedSubtitle};subtitleHTML=BibblioTemplates.getTemplate(BibblioTemplates.subtitleTemplate,templateOptions)}return subtitleHTML},getAuthorHTML:function(contentItem,moduleSettings){var authorHTML="";try{var authorField=contentItem.fields.author;var templateOptions={author:authorField.name};authorHTML=BibblioTemplates.getTemplate(BibblioTemplates.authorTemplate,templateOptions)}catch(e){}return authorHTML},getSiteHTML:function(contentItem){var siteHTML="";try{var syndicationField=BibblioUtils.getDomainName(contentItem.fields.url);var templateOptions={domain:syndicationField};siteHTML=BibblioTemplates.getTemplate(BibblioTemplates.siteTemplate,templateOptions)}catch(e){}return siteHTML},formatDate:function(value,formatting){if(value&&value.indexOf("T")===10){var date=value.split("T")[0];var year=parseInt(date.split("-")[0]);var month=parseInt(date.split("-")[1]);var day=parseInt(date.split("-")[2]);var monthName=BibblioUtils.monthName(month);switch(formatting){case"MDY":return monthName+" "+day+", "+year;break;case"YMD":return year+" "+monthName+" "+day;break;case"DMY":default:return day+" "+monthName+" "+year;break}}},getDatePublishedHTML:function(contentItem,moduleSettings){var datePublishedHTML="";try{var datePublishedField=contentItem.fields.datePublished;var formattedDatePublishedField=BibblioTemplates.formatDate(datePublishedField,moduleSettings.dateFormat);var templateOptions={datePublished:formattedDatePublishedField?formattedDatePublishedField:datePublishedField};datePublishedHTML=BibblioTemplates.getTemplate(BibblioTemplates.datePublishedTemplate,templateOptions)}catch(e){}return datePublishedHTML},filterContentItemImageUrl:function(moduleImageUrl){var url=moduleImageUrl.replace(/'/g,"\\'");if(url.indexOf("http://")===0||url.indexOf("https://")===0||url.indexOf("data:image/")===0){return url}else{var withProtocol="http://"+url;return withProtocol}},getRelatedContentItemHTML:function(contentItem,tileType,options,moduleSettings){var subtitleHTML=BibblioTemplates.getSubtitleHTML(contentItem,moduleSettings);var authorHTML=BibblioTemplates.getAuthorHTML(contentItem,moduleSettings);var datePublishedHTML=BibblioTemplates.getDatePublishedHTML(contentItem,moduleSettings);var siteHTML=BibblioTemplates.getSiteHTML(contentItem);var contentItemUrl=contentItem.fields.url?contentItem.fields.url:"";var contentItemImageUrl=undefined;if(contentItem.fields.moduleImage){if(contentItem.fields.moduleImage.cdnUrl){contentItemImageUrl=BibblioTemplates.filterContentItemImageUrl(contentItem.fields.moduleImage.cdnUrl)}else if(contentItem.fields.moduleImage.contentUrl){contentItemImageUrl=BibblioTemplates.filterContentItemImageUrl(contentItem.fields.moduleImage.contentUrl)}}var classes=BibblioUtils.getModuleStyleClasses(moduleSettings);var templateOptions={contentItemId:contentItem.contentItemId?contentItem.contentItemId:"",name:BibblioUtils.truncateTitle(contentItem.fields.name?contentItem.fields.name:"",classes,moduleSettings.truncateTitle),authorHTML:authorHTML,siteHTML:siteHTML,datePublishedHTML:datePublishedHTML,linkHref:BibblioUtils.linkHrefFor(contentItemUrl,options.queryStringParams),linkTarget:BibblioUtils.linkTargetFor(contentItemUrl),linkRel:BibblioUtils.linkRelFor(contentItemUrl),linkImageUrl:contentItemImageUrl?contentItemImageUrl:"",subtitleHTML:subtitleHTML,tileType:tileType};return BibblioTemplates.getTemplate(BibblioTemplates.relatedContentItemTemplate,templateOptions)},getEmptyTileHTML:function(){return BibblioTemplates.getTemplate(BibblioTemplates.emptyTileTemplate,{})},getOuterModuleHTML:function(moduleSettings,relatedContentItemsHTML){var classes=moduleSettings.styleClasses?moduleSettings.styleClasses:BibblioUtils.getPresetModuleClasses(moduleSettings.stylePreset);if(moduleSettings.hidden){classes+=" bib--hide"}var templateOptions={classes:classes,recommendedContentItems:relatedContentItemsHTML};return BibblioTemplates.getTemplate(BibblioTemplates.outerModuleTemplate,templateOptions)},getModuleHTML:function(tiles,options,moduleSettings){var moduleHTML="";var maxTiles=tiles.length<Bibblio.recommendationsLimit?tiles.length:Bibblio.recommendationsLimit;if(tiles){for(var i=0;i<maxTiles;i++){switch(tiles[i].type){case"customRecTile":case"recTile":moduleHTML+=BibblioTemplates.getRelatedContentItemHTML(tiles[i].value,tiles[i].type,options,moduleSettings)+"\n";break;case"emptyTile":moduleHTML+=BibblioTemplates.getEmptyTileHTML()+"\n";break;case"string":moduleHTML+=tiles[i].value+"\n";break}}}var moduleHTML=BibblioTemplates.getOuterModuleHTML(moduleSettings,moduleHTML);return moduleHTML}};var BibblioActivity={track:function(trackingLink,activityData){if(trackingLink!=null){BibblioUtils.bibblioHttpPostRequest(trackingLink,null,activityData,false)}},trackAsync:function(trackingLink,activityData){if(trackingLink!=null){BibblioUtils.bibblioHttpPostRequest(trackingLink,null,activityData,true)}},constructOnClickedActivityData:function(options){var activityData={type:"Clicked",object:BibblioActivity.constructActivityObject(options.clickedContentItemId,options.clickedContentItemHref),context:BibblioActivity.constructActivityContext(options),instrument:BibblioActivity.constructActivityInstrument(options.instrument)};if(options.userId!=null&&options.userMetadata!=null){activityData["actor"]={userId:options.userId,userMetadata:options.userMetadata}}else if(options.userId!=null){activityData["actor"]={userId:options.userId}}return activityData},constructOnViewedActivityData:function(options){var activityData={type:"Viewed",context:BibblioActivity.constructActivityContext(options),instrument:BibblioActivity.constructActivityInstrument(options.instrument)};if(options.userId!=null&&options.userMetadata!=null){activityData["actor"]={userId:options.userId,userMetadata:options.userMetadata}}else if(options.userId!=null){activityData["actor"]={userId:options.userId}}return activityData},constructActivityInstrument:function(instrument){return{type:instrument.type,version:instrument.version,config:instrument.config,moduleId:instrument.moduleId,addons:instrument.addons}},constructActivityObject:function(clickedContentItemId,clickedContentItemHref){return[["contentItemId",clickedContentItemId],["href",clickedContentItemHref]]},constructActivityContext:function(data){var sourceContentItemId=data.sourceContentItemId;var catalogueIds=data.catalogueIds;var relatedContentItems=data.relatedContentItems;var requestedRecsType=data.requestedRecommendationType;var returnedRecsType=data.returnedRecommendationType;var context=[];var href=typeof window!=="undefined"&&window.location&&window.location.href?window.location.href:"";context.push(["sourceHref",href]);if(sourceContentItemId){context.push(["sourceContentItemId",sourceContentItemId])}for(var i=0;i<relatedContentItems.length;i++){context.push(["recommendations.contentItemId",relatedContentItems[i].contentItemId])}if(catalogueIds&&catalogueIds.length>0){for(var i=0;i<catalogueIds.length;i++)context.push(["recommendations.catalogueId",catalogueIds[i]])}else{if(relatedContentItems[0].catalogueId){context.push(["recommendations.catalogueId",relatedContentItems[0].catalogueId])}}var recommendationType=[];if(requestedRecsType){recommendationType.push(["requested",requestedRecsType])}if(returnedRecsType){recommendationType.push(["returned",returnedRecsType])}if(recommendationType.length>0){context.push(["recommendationType",recommendationType])}return context}};if(isNodeJS){module.exports.Bibblio=Bibblio;module.exports.BibblioUtils=BibblioUtils;module.exports.BibblioActivity=BibblioActivity;module.exports.BibblioEvents=BibblioEvents;module.exports.BibblioTemplates=BibblioTemplates}else{window.Bibblio=Bibblio;window.BibblioActivity=BibblioActivity;window.BibblioUtils=BibblioUtils;window.BibblioEvents=BibblioEvents;window.BibblioTemplates=BibblioTemplates;if(document.readyState==="loading"||document.readyState==="interactive"){document.addEventListener("DOMContentLoaded",Bibblio.autoInit)}else{Bibblio.autoInit()}}})();(function(){var BibblioLoader={autoInitData:{"bib--hide-init":isNodeJS?module.exports.BibblioHideAddon._initForLoader:window.BibblioHideAddon._initForLoader,"bib--takeover-init":isNodeJS?module.exports.BibblioTakeoverAddon._initForLoader:window.BibblioTakeoverAddon._initForLoader,"bib--rcm-init":isNodeJS?module.exports.Bibblio._initForLoader:window.Bibblio._initForLoader},getRcmElements:function(){var elements=document.getElementsByClassName("bib--rcm-init");return[].slice.call(elements)},getRcmsAndParentAddons:function(rcms){var autoInitClasses=Object.keys(BibblioLoader.autoInitData);var ret=[];var rcmAndParentAddons=[];rcms.forEach(function(element){rcmAndParentAddons=[];while(element){autoInitClasses.forEach(function(klass){if(element.classList&&element.classList.contains(klass)){rcmAndParentAddons.unshift(element)}});element=element.parentNode}rcmAndParentAddons.forEach(function(element){if(ret.indexOf(element)===-1){ret.push(element)}})});return ret},makeNestedCallbackFunction:function(theFn,element,prevFn,options){return function(){theFn(element,prevFn,options)}},callNestedInitFunctions:function(elements){var prevFn;var autoInitClasses=Object.keys(BibblioLoader.autoInitData);for(var i=elements.length-1;i>=0;i--){autoInitClasses.forEach(function(klass){var klassList=Array.isArray(elements[i].classList)?elements[i].classList:Array.from(elements[i].classList);if(klassList&&klassList.indexOf(klass)>-1){var initFn=BibblioLoader.autoInitData[klass];prevFn=BibblioLoader.makeNestedCallbackFunction(initFn,elements[i],prevFn)}})}if(prevFn){prevFn()}},init:function(){BibblioUtils.delayExecution(function(){var rcms=BibblioLoader.getRcmElements();var rcmAndParentAddons=BibblioLoader.getRcmsAndParentAddons(rcms);BibblioLoader.callNestedInitFunctions(rcmAndParentAddons)})}};if(isNodeJS){module.exports.BibblioLoader=BibblioLoader}else{window.BibblioLoader=BibblioLoader;if(document.readyState==="loading"||document.readyState==="interactive"){document.addEventListener("DOMContentLoaded",BibblioLoader.init)}else{BibblioLoader.init()}}})();(function(){var BibblioStateManager={store:{},get:function(element){if(element&&element.dataset&&element.dataset.bibblioStateId){var stateId=element.dataset.bibblioStateId;return BibblioStateManager.store[stateId]}},set:function(element,value){if(element&&element.dataset){var stateId;if(element.dataset.bibblioStateId){stateId=element.dataset.bibblioStateId}else{stateId=Math.floor((Math.random()+Math.random())*45e14);element.dataset.bibblioStateId=stateId}BibblioStateManager.store[stateId]=value;return true}return false}};if(isNodeJS){module.exports.BibblioStateManager=BibblioStateManager}else{window.BibblioStateManager=BibblioStateManager}})();