Commit e1483b4e authored by ale's avatar ale

add online ePub reader using epub.js

parent 2a742483
body {
overflow: hidden;
}
#main {
position: absolute;
width: 100%;
height: 100%;
}
#area {
width: 80%;
height: 80%;
margin: 5% auto;
max-width: 1250px;
}
#area iframe {
border: none;
}
#prev {
left: 40px;
}
#next {
right: 40px;
}
.arrow {
position: absolute;
top: 50%;
margin-top: -32px;
font-size: 64px;
color: #e2e2e2;
font-family: arial, sans-serif;
font-weight: bold;
cursor: pointer;
-webkit-user-select: none;
-moz-user-select: none;
user-select: none;
}
.arrow:hover {
color: #777;
}
.arrow:active {
color: #000;
}
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b=EPUBJS.core.uri(a);return!b.extension||"epub"!=b.extension&&"zip"!=b.extension?!1:!0},EPUBJS.Book.prototype.isSaved=function(a){var b;return localStorage?(b=localStorage.getItem(a),localStorage&&null!==b?!0:!1):!1},EPUBJS.Book.prototype.generateBookKey=function(a){return"epubjs:"+EPUBJS.VERSION+":"+window.location.host+":"+a},EPUBJS.Book.prototype.saveContents=function(){return localStorage?void localStorage.setItem(this.settings.bookKey,JSON.stringify(this.contents)):!1},EPUBJS.Book.prototype.removeSavedContents=function(){return localStorage?void localStorage.removeItem(this.settings.bookKey):!1},EPUBJS.Book.prototype.renderTo=function(a){var b,c=this;if(_.isElement(a))this.element=a;else{if("string"!=typeof a)return void console.error("Not an Element");this.element=EPUBJS.core.getEl(a)}return b=this.opened.then(function(){return c.renderer.initialize(c.element,c.settings.width,c.settings.height),c._rendered(),c.startDisplay()})},EPUBJS.Book.prototype.startDisplay=function(){var a;return a=this.settings.goto?this.goto(this.settings.goto):this.settings.previousLocationCfi?this.gotoCfi(this.settings.previousLocationCfi):this.displayChapter(this.spinePos)},EPUBJS.Book.prototype.restore=function(a){var b,c=this,d=["manifest","spine","metadata","cover","toc","spineNodeIndex","spineIndexByURL","globalLayoutProperties"],e=!1,f=this.generateBookKey(a),g=localStorage.getItem(f),h=d.length;if(this.settings.clearSaved&&(e=!0),!e&&"undefined"!=g&&null!==g)for(c.contents=JSON.parse(g),b=0;h>b;b++){var i=d[b];if(!c.contents[i]){e=!0;break}c[i]=c.contents[i]}return!e&&g&&this.contents&&this.settings.contentsPath?(this.settings.bookKey=f,this.ready.manifest.resolve(this.manifest),this.ready.spine.resolve(this.spine),this.ready.metadata.resolve(this.metadata),this.ready.cover.resolve(this.cover),this.ready.toc.resolve(this.toc),!0):!1},EPUBJS.Book.prototype.displayChapter=function(a,b,c){var d,e,f,g,h=this,i=c||new RSVP.defer;return this.isRendered?this._rendering||this._rendering?(this._displayQ.enqueue("displayChapter",[a,b,i]),i.promise):(_.isNumber(a)?f=a:(e=new EPUBJS.EpubCFI(a),f=e.spinePos),(0>f||f>=this.spine.length)&&(console.warn("Not A Valid Location"),f=0,b=!1,e=!1),g=new EPUBJS.Chapter(this.spine[f],this.store),this._rendering=!0,d=h.renderer.displayChapter(g,this.globalLayoutProperties),e?h.renderer.gotoCfi(e):b&&h.renderer.lastPage(),d.then(function(){h.spinePos=f,i.resolve(h.renderer),h.settings.fromStorage||h.settings.contained||h.preloadNextChapter(),h.currentChapter=g,h._rendering=!1,h._displayQ.dequeue(),0===h._displayQ.length()&&h._gotoQ.dequeue()},function(a){console.error("Could not load Chapter: "+g.absolute),h.trigger("book:chapterLoadFailed",g.absolute),h._rendering=!1,i.reject(a)}),i.promise):(this._q.enqueue("displayChapter",arguments),i.reject({message:"Rendering",stack:(new Error).stack}),i.promise)},EPUBJS.Book.prototype.nextPage=function(){var a;return this.isRendered?(a=this.renderer.nextPage(),a?void 0:this.nextChapter()):this._q.enqueue("nextPage",arguments)},EPUBJS.Book.prototype.prevPage=function(){var a;return this.isRendered?(a=this.renderer.prevPage(),a?void 0:this.prevChapter()):this._q.enqueue("prevPage",arguments)},EPUBJS.Book.prototype.nextChapter=function(){var a;if(this.spinePos<this.spine.length-1){for(a=this.spinePos+1;this.spine[a]&&this.spine[a].linear&&"no"==this.spine[a].linear;)a++;if(a<this.spine.length)return this.displayChapter(a);this.trigger("book:atEnd")}else this.trigger("book:atEnd")},EPUBJS.Book.prototype.prevChapter=function(){var a;if(this.spinePos>0){for(a=this.spinePos-1;this.spine[a]&&this.spine[a].linear&&"no"==this.spine[a].linear;)a--;if(a>=0)return this.displayChapter(a,!0);this.trigger("book:atStart")}else this.trigger("book:atStart")},EPUBJS.Book.prototype.getCurrentLocationCfi=function(){return this.isRendered?this.renderer.currentLocationCfi:!1},EPUBJS.Book.prototype.goto=function(a){return 0===a.indexOf("epubcfi(")?this.gotoCfi(a):a.indexOf("%")===a.length-1?this.gotoPercentage(parseInt(a.substring(0,a.length-1))/100):"number"==typeof a||isNaN(a)===!1?this.gotoPage(a):this.gotoHref(a)},EPUBJS.Book.prototype.gotoCfi=function(a,b){var c,d,e,f=b||new RSVP.defer;return this.isRendered?this._moving||this._rendering?(console.warn("Renderer is moving"),this._gotoQ.enqueue("gotoCfi",[a,f]),!1):(c=new EPUBJS.EpubCFI(a),d=c.spinePos,-1==d?!1:(e=this.spine[d],promise=f.promise,this._moving=!0,this.currentChapter&&this.spinePos===d?(this.renderer.gotoCfi(c),this._moving=!1,f.resolve(this.renderer.currentLocationCfi)):(e&&-1!=d||(d=0,e=this.spine[d]),this.currentChapter=new EPUBJS.Chapter(e,this.store),this.currentChapter&&(this.spinePos=d,render=this.renderer.displayChapter(this.currentChapter,this.globalLayoutProperties),this.renderer.gotoCfi(c),render.then(function(a){this._moving=!1,f.resolve(a.currentLocationCfi)}.bind(this)))),promise.then(function(){this._gotoQ.dequeue()}.bind(this)),promise)):(console.warn("Not yet Rendered"),this.settings.previousLocationCfi=a,!1)},EPUBJS.Book.prototype.gotoHref=function(a,b){var c,d,e,f,g,h=b||new RSVP.defer;return this.isRendered?this._moving||this._rendering?(this._gotoQ.enqueue("gotoHref",[a,h]),!1):(c=a.split("#"),d=c[0],e=c[1]||!1,f=d.replace(this.settings.contentsPath,""),g=this.spineIndexByURL[f],d||(g=this.currentChapter?this.currentChapter.spinePos:0),"number"!=typeof g?!1:this.currentChapter&&g==this.currentChapter.spinePos?(e?this.renderer.section(e):this.renderer.firstPage(),h.resolve(this.renderer.currentLocationCfi),h.promise.then(function(){this._gotoQ.dequeue()}.bind(this)),h.promise):this.displayChapter(g).then(function(){e&&this.renderer.section(e),h.resolve(this.renderer.currentLocationCfi)}.bind(this))):(this.settings.goto=a,!1)},EPUBJS.Book.prototype.gotoPage=function(a){var b=this.pagination.cfiFromPage(a);return this.gotoCfi(b)},EPUBJS.Book.prototype.gotoPercentage=function(a){var b=this.pagination.pageFromPercentage(a);return this.gotoPage(b)},EPUBJS.Book.prototype.preloadNextChapter=function(){var a,b=this.spinePos+1;return b>=this.spine.length?!1:(a=new EPUBJS.Chapter(this.spine[b]),void(a&&EPUBJS.core.request(a.absolute)))},EPUBJS.Book.prototype.storeOffline=function(){var a=this,b=_.values(this.manifest);return EPUBJS.storage.batch(b).then(function(){a.settings.stored=!0,a.trigger("book:stored")})},EPUBJS.Book.prototype.availableOffline=function(){return this.settings.stored>0?!0:!1},EPUBJS.Book.prototype.setStyle=function(a,b,c){var d=["color","background","background-color"];return this.isRendered?(this.settings.styles[a]=b,this.renderer.setStyle(a,b,c),void(-1===d.indexOf(a)&&this.renderer.reformat())):this._q.enqueue("setStyle",arguments)},EPUBJS.Book.prototype.removeStyle=function(a){return this.isRendered?(this.renderer.removeStyle(a),this.renderer.reformat(),void delete this.settings.styles[a]):this._q.enqueue("removeStyle",arguments)},EPUBJS.Book.prototype.addHeadTag=function(a,b){return this.isRendered?void(this.settings.headTags[a]=b):this._q.enqueue("addHeadTag",arguments)},EPUBJS.Book.prototype.useSpreads=function(a){console.warn("useSpreads is deprecated, use forceSingle or set a layoutOveride instead"),this.forceSingle(a===!1?!0:!1)},EPUBJS.Book.prototype.forceSingle=function(a){var b="undefined"==typeof a?!0:a;this.renderer.forceSingle(b),this.settings.forceSingle=b,this.isRendered&&this.renderer.reformat()},EPUBJS.Book.prototype.setMinSpreadWidth=function(a){this.settings.minSpreadWidth=a,this.isRendered&&(this.renderer.setMinSpreadWidth(this.settings.minSpreadWidth),this.renderer.reformat())},EPUBJS.Book.prototype.setGap=function(a){this.settings.gap=a,this.isRendered&&(this.renderer.setGap(this.settings.gap),this.renderer.reformat())},EPUBJS.Book.prototype.chapter=function(a){var b,c,d=this.spineIndexByURL[a];return d&&(b=this.spine[d],c=new EPUBJS.Chapter(b,this.store),c.load()),c},EPUBJS.Book.prototype.unload=function(){this.settings.restore&&localStorage&&this.saveContents(),this.unlistenToRenderer(this.renderer),this.trigger("book:unload")},EPUBJS.Book.prototype.destroy=function(){window.removeEventListener("beforeunload",this.unload),this.currentChapter&&this.currentChapter.unload(),this.unload(),this.render&&this.render.remove()},EPUBJS.Book.prototype._ready=function(){this.trigger("book:ready")},EPUBJS.Book.prototype._rendered=function(){this.isRendered=!0,this.trigger("book:rendered"),this._q.flush()},EPUBJS.Book.prototype.applyStyles=function(a,b){a.applyStyles(this.settings.styles),b()},EPUBJS.Book.prototype.applyHeadTags=function(a,b){a.applyHeadTags(this.settings.headTags),b()},EPUBJS.Book.prototype._registerReplacements=function(a){a.registerHook("beforeChapterDisplay",this.applyStyles.bind(this,a),!0),a.registerHook("beforeChapterDisplay",this.applyHeadTags.bind(this,a),!0),a.registerHook("beforeChapterDisplay",EPUBJS.replace.hrefs.bind(this),!0),this._needsAssetReplacement()&&a.registerHook("beforeChapterDisplay",[EPUBJS.replace.head,EPUBJS.replace.resources,EPUBJS.replace.svg],!0)},EPUBJS.Book.prototype._needsAssetReplacement=function(){return this.settings.fromStorage?"filesystem"==this.storage.getStorageType()?!1:!0:this.settings.contained?!0:!1},EPUBJS.Book.prototype.parseLayoutProperties=function(a){var b=this.layoutOveride&&this.layoutOveride.layout||a.layout||"reflowable",c=this.layoutOveride&&this.layoutOveride.spread||a.spread||"auto",d=this.layoutOveride&&this.layoutOveride.orientation||a.orientation||"auto";return{layout:b,spread:c,orientation:d}},RSVP.EventTarget.mixin(EPUBJS.Book.prototype),RSVP.on("error",function(){}),RSVP.configure("instrument",!0),RSVP.on("rejected",function(a){console.error(a.detail.message,a.detail.stack)}),EPUBJS.Chapter=function(a,b){this.href=a.href,this.absolute=a.url,this.id=a.id,this.spinePos=a.index,this.cfiBase=a.cfiBase,this.properties=a.properties,this.manifestProperties=a.manifestProperties,this.linear=a.linear,this.pages=1,this.store=b,this.epubcfi=new EPUBJS.EpubCFI,this.deferred=new RSVP.defer,this.loaded=this.deferred.promise},EPUBJS.Chapter.prototype.load=function(a){var b,c=a||this.store;return b=c?c.get(this.href):EPUBJS.core.request(this.absolute,"xml"),b.then(function(a){this.setDocument(a),this.deferred.resolve(this)}.bind(this)),b},EPUBJS.Chapter.prototype.render=function(){return this.load().then(function(a){var b,c=new XMLSerializer,d=a.head,e=a.createElement("base");return e.setAttribute("href",window.location.origin+this.absolute),d.insertBefore(e,d.firstChild),b=c.serializeToString(a)}.bind(this))},EPUBJS.Chapter.prototype.url=function(a){var b,c=new RSVP.defer,d=a||this.store,e=this;return d?this.tempUrl?(b=this.tempUrl,c.resolve(b)):d.getUrl(this.absolute).then(function(a){e.tempUrl=a,c.resolve(a)}):(b=this.absolute,c.resolve(b)),c.promise},EPUBJS.Chapter.prototype.setPages=function(a){this.pages=a},EPUBJS.Chapter.prototype.getPages=function(){return this.pages},EPUBJS.Chapter.prototype.getID=function(){return 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a.forEach(function(a){var c="";c+=2*(a.index+1),a.id&&(c+="["+a.id+"]"),b.push(c)}),b.join("/")},EPUBJS.EpubCFI.prototype.generateCfiFromElement=function(a,b){var c=this.pathTo(a),d=this.generatePathComponent(c);return d.length?"epubcfi("+b+"!"+d+"/1:0)":"epubcfi("+b+"!/4/)"},EPUBJS.EpubCFI.prototype.pathTo=function(a){for(var b,c=[];a&&null!==a.parentNode&&9!=a.parentNode.nodeType;)b=a.parentNode.children,c.unshift({id:a.id,tagName:a.tagName,index:b?Array.prototype.indexOf.call(b,a):0}),a=a.parentNode;return c},EPUBJS.EpubCFI.prototype.getChapterComponent=function(a){var b=a.split("!");return b[0]},EPUBJS.EpubCFI.prototype.getPathComponent=function(a){var b=a.split("!"),c=b[1]?b[1].split(":"):"";return c[0]},EPUBJS.EpubCFI.prototype.getCharecterOffsetComponent=function(a){var b=a.split(":");return b[1]||""},EPUBJS.EpubCFI.prototype.parse=function(a){var b,c,d,e,f,g,h,i,j,k={},l=function(a){var b,c,d,e;return b="element",c=parseInt(a)/2-1,d=a.match(/\[(.*)\]/),d&&d[1]&&(e=d[1]),{type:b,index:c,id:e||!1}};return"string"!=typeof a?{spinePos:-1}:(k.str=a,0===a.indexOf("epubcfi(")&&")"===a[a.length-1]&&(a=a.slice(8,a.length-1)),c=this.getChapterComponent(a),d=this.getPathComponent(a)||"",e=this.getCharecterOffsetComponent(a),c&&(b=c.split("/")[2]||"")?(k.spinePos=parseInt(b)/2-1||0,g=b.match(/\[(.*)\]/),k.spineId=g?g[1]:!1,-1!=d.indexOf(",")&&console.warn("CFI Ranges are not supported"),h=d.split("/"),i=h.pop(),k.steps=[],h.forEach(function(a){var b;a&&(b=l(a),k.steps.push(b))}),j=parseInt(i),isNaN(j)||k.steps.push(j%2===0?l(i):{type:"text",index:(j-1)/2}),f=e.match(/\[(.*)\]/),f&&f[1]?(k.characterOffset=parseInt(e.split("[")[0]),k.textLocationAssertion=f[1]):k.characterOffset=parseInt(e),k):{spinePos:-1})},EPUBJS.EpubCFI.prototype.addMarker=function(a,b,c){var d,e,f,g,h=b||document,i=c||this.createMarker(h);return"string"==typeof a&&(a=this.parse(a)),e=a.steps[a.steps.length-1],-1===a.spinePos?!1:(d=this.findParent(a,h))?(e&&"text"===e.type?(f=d.childNodes[e.index],a.characterOffset?(g=f.splitText(a.characterOffset),i.classList.add("EPUBJS-CFI-SPLIT"),d.insertBefore(i,g)):d.insertBefore(i,f)):d.insertBefore(i,d.firstChild),i):!1},EPUBJS.EpubCFI.prototype.createMarker=function(a){var b=a||document,c=b.createElement("span");return c.id="EPUBJS-CFI-MARKER:"+EPUBJS.core.uuid(),c.classList.add("EPUBJS-CFI-MARKER"),c},EPUBJS.EpubCFI.prototype.removeMarker=function(a,b){a.classList.contains("EPUBJS-CFI-SPLIT")?(nextSib=a.nextSibling,prevSib=a.previousSibling,nextSib&&prevSib&&3===nextSib.nodeType&&3===prevSib.nodeType&&(prevSib.textContent+=nextSib.textContent,a.parentNode.removeChild(nextSib)),a.parentNode.removeChild(a)):a.classList.contains("EPUBJS-CFI-MARKER")&&a.parentNode.removeChild(a)},EPUBJS.EpubCFI.prototype.findParent=function(a,b){var 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a.steps.length<b.steps.length?-1:a.characterOffset>b.characterOffset?1:a.characterOffset<b.characterOffset?-1:0},EPUBJS.EpubCFI.prototype.generateCfiFromHref=function(a,b){var c,d,e=EPUBJS.core.uri(a),f=e.path,g=e.fragment,h=b.spineIndexByURL[f],i=new RSVP.defer,j=new EPUBJS.EpubCFI;return"undefined"!=typeof h&&(d=b.spine[h],c=b.loadXml(d.url),c.then(function(a){var b,c=a.getElementById(g);b=j.generateCfiFromElement(c,d.cfiBase),i.resolve(b)})),i.promise},EPUBJS.EpubCFI.prototype.generateCfiFromTextNode=function(a,b,c){var d=a.parentNode,e=this.pathTo(d),f=this.generatePathComponent(e),g=1+2*Array.prototype.indexOf.call(d.childNodes,a);return"epubcfi("+c+"!"+f+"/"+g+":"+(b||0)+")"},EPUBJS.EpubCFI.prototype.generateCfiFromRangeAnchor=function(a,b){var c=a.anchorNode,d=a.anchorOffset;return this.generateCfiFromTextNode(c,d,b)},EPUBJS.EpubCFI.prototype.generateCfiFromRange=function(a,b){var c,d,e,f,g,h,i,j,k,l,m,n;if(c=a.startContainer,3===c.nodeType)d=c.parentNode,h=1+2*EPUBJS.core.indexOfTextNode(c),e=this.pathTo(d);else{if(a.collapsed)return this.generateCfiFromElement(c,b);e=this.pathTo(c)}return f=this.generatePathComponent(e),g=a.startOffset,a.collapsed?"epubcfi("+b+"!"+f+"/"+h+":"+g+")":(i=a.endContainer,3===i.nodeType?(j=i.parentNode,n=1+2*EPUBJS.core.indexOfTextNode(i),k=this.pathTo(j)):k=this.pathTo(i),l=this.generatePathComponent(k),m=a.endOffset,"epubcfi("+b+"!"+f+"/"+h+":"+g+","+l+"/"+n+":"+m+")")},EPUBJS.EpubCFI.prototype.generateXpathFromSteps=function(a){var b=[".","*"];return a.forEach(function(a){var c=a.index+1;b.push(a.id?"*[position()="+c+" and @id='"+a.id+"']":"text"===a.type?"text()["+c+"]":"*["+c+"]")}),b.join("/")},EPUBJS.EpubCFI.prototype.generateRangeFromCfi=function(a,b){var c,d,e,f,g=b||document,h=g.createRange();return"string"==typeof a&&(a=this.parse(a)),-1===a.spinePos?!1:(d=this.generateXpathFromSteps(a.steps),c=a.steps[a.steps.length-1],(e=g.evaluate(d,g,null,XPathResult.FIRST_ORDERED_NODE_TYPE,null).singleNodeValue)?(e&&a.characterOffset>=0?(f=e.length,a.characterOffset<f?(h.setStart(e,a.characterOffset),h.setEnd(e,f)):(console.debug("offset greater than length:",a.characterOffset,f),h.setStart(e,f-1),h.setEnd(e,f))):e&&h.selectNode(e),h):null)},EPUBJS.Events=function(a,b){return this.events={},this.el=b?b:document.createElement("div"),a.createEvent=this.createEvent,a.tell=this.tell,a.listen=this.listen,a.deafen=this.deafen,a.listenUntil=this.listenUntil,this},EPUBJS.Events.prototype.createEvent=function(a){var b=new CustomEvent(a);return this.events[a]=b,b},EPUBJS.Events.prototype.tell=function(a,b){var c;this.events[a]?c=this.events[a]:(console.warn("No event:",a,"defined yet, creating."),c=this.createEvent(a)),b&&(c.msg=b),this.el.dispatchEvent(c)},EPUBJS.Events.prototype.listen=function(a,b,c){return this.events[a]?void(c?this.el.addEventListener(a,b.bind(c),!1):this.el.addEventListener(a,b,!1)):(console.warn("No event:",a,"defined yet, creating."),void this.createEvent(a))},EPUBJS.Events.prototype.deafen=function(a,b){this.el.removeEventListener(a,b,!1)},EPUBJS.Events.prototype.listenUntil=function(a,b,c,d){function e(){this.deafen(a,c),this.deafen(b,e)}this.listen(a,c,d),this.listen(b,e,this)},EPUBJS.hooks={},EPUBJS.Hooks=function(){function a(){}return a.prototype.getHooks=function(){var a;this.hooks={},Array.prototype.slice.call(arguments).forEach(function(a){this.hooks[a]=[]},this);for(var b in this.hooks)a=_.values(EPUBJS.hooks[b]),a.forEach(function(a){this.registerHook(b,a)},this)},a.prototype.registerHook=function(a,b,c){"undefined"!=typeof this.hooks[a]?"function"==typeof b?c?this.hooks[a].unshift(b):this.hooks[a].push(b):Array.isArray(b)&&b.forEach(function(b){c?this.hooks[a].unshift(b):this.hooks[a].push(b)},this):this.hooks[a]=[func]},a.prototype.triggerHooks=function(a,b,c){function d(){f--,0>=f&&b&&b()}var e,f;return"undefined"==typeof this.hooks[a]?!1:(e=this.hooks[a],f=e.length,0===f&&b&&b(),void e.forEach(function(a){a(d,c)}))},{register:function(a){if(void 0===EPUBJS.hooks[a]&&(EPUBJS.hooks[a]={}),"object"!=typeof EPUBJS.hooks[a])throw"Already registered: "+a;return EPUBJS.hooks[a]},mixin:function(b){for(var c in a.prototype)b[c]=a.prototype[c]}}}(),EPUBJS.Layout=EPUBJS.Layout||{},EPUBJS.Layout.Reflowable=function(){this.documentElement=null,this.spreadWidth=null},EPUBJS.Layout.Reflowable.prototype.format=function(a,b,c,d){var e=EPUBJS.core.prefixed("columnAxis"),f=EPUBJS.core.prefixed("columnGap"),g=EPUBJS.core.prefixed("columnWidth"),h=EPUBJS.core.prefixed("columnFill"),i=Math.floor(b),j=Math.floor(i/8),k=d>=0?d:j%2===0?j:j-1;return this.documentElement=a,this.spreadWidth=i+k,a.style.overflow="hidden",a.style.width=i+"px",a.style.height=c+"px",a.style[e]="horizontal",a.style[h]="auto",a.style[g]=i+"px",a.style[f]=k+"px",this.colWidth=i,this.gap=k,{pageWidth:this.spreadWidth,pageHeight:c}},EPUBJS.Layout.Reflowable.prototype.calculatePages=function(){var a,b;return this.documentElement.style.width="auto",a=this.documentElement.scrollWidth,b=Math.ceil(a/this.spreadWidth),{displayedPages:b,pageCount:b}},EPUBJS.Layout.ReflowableSpreads=function(){this.documentElement=null,this.spreadWidth=null},EPUBJS.Layout.ReflowableSpreads.prototype.format=function(a,b,c,d){var e=EPUBJS.core.prefixed("columnAxis"),f=EPUBJS.core.prefixed("columnGap"),g=EPUBJS.core.prefixed("columnWidth"),h=EPUBJS.core.prefixed("columnFill"),i=2,j=Math.floor(b),k=j%2===0?j:j-1,l=Math.floor(k/8),m=d>=0?d:l%2===0?l:l-1,n=Math.floor((k-m)/i);return this.documentElement=a,this.spreadWidth=(n+m)*i,a.style.overflow="hidden",a.style.width=k+"px",a.style.height=c+"px",a.style[e]="horizontal",a.style[h]="auto",a.style[f]=m+"px",a.style[g]=n+"px",this.colWidth=n,this.gap=m,{pageWidth:this.spreadWidth,pageHeight:c}},EPUBJS.Layout.ReflowableSpreads.prototype.calculatePages=function(){var a=this.documentElement.scrollWidth,b=Math.ceil(a/this.spreadWidth);return this.documentElement.style.width=b*this.spreadWidth-this.gap+"px",{displayedPages:b,pageCount:2*b}},EPUBJS.Layout.Fixed=function(){this.documentElement=null},EPUBJS.Layout.Fixed=function(a){var b,c,d,e,f=EPUBJS.core.prefixed("columnWidth"),g=a.querySelector("[name=viewport");return this.documentElement=a,g&&g.hasAttribute("content")&&(b=g.getAttribute("content"),c=b.split(","),c[0]&&(d=c[0].replace("width=","")),c[1]&&(e=c[1].replace("height=",""))),a.style.width=d+"px"||"auto",a.style.height=e+"px"||"auto",a.style[f]="auto",a.style.overflow="auto",this.colWidth=d,this.gap=0,{pageWidth:d,pageHeight:e}},EPUBJS.Layout.Fixed.prototype.calculatePages=function(){return{displayedPages:1,pageCount:1}},EPUBJS.Pagination=function(a){this.pages=[],this.locations=[],this.epubcfi=new EPUBJS.EpubCFI,a&&a.length&&this.process(a)},EPUBJS.Pagination.prototype.process=function(a){a.forEach(function(a){this.pages.push(a.page),this.locations.push(a.cfi)},this),this.pageList=a,this.firstPage=parseInt(this.pages[0]),this.lastPage=parseInt(this.pages[this.pages.length-1]),this.totalPages=this.lastPage-this.firstPage},EPUBJS.Pagination.prototype.pageFromCfi=function(a){var b=-1;if(0===this.locations.length)return-1;var 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a?(b=a.querySelector("metadata"),b?this.getElementText(b,"identifier"):void console.error("No Metadata Found")):void console.error("Package File Not Found")},EPUBJS.Parser.prototype.packageContents=function(a,b){var c,d,e,f,g,h,i,j,k,l,m=this;return b&&(this.baseUrl=b),a?(c=a.querySelector("metadata"))?(d=a.querySelector("manifest"))?(e=a.querySelector("spine"))?(f=m.manifest(d),g=m.findNavPath(d),h=m.findTocPath(d),i=m.findCoverPath(d),j=Array.prototype.indexOf.call(e.parentNode.childNodes,e),k=m.spine(e,f),l={},k.forEach(function(a){l[a.href]=a.index}),{metadata:m.metadata(c),spine:k,manifest:f,navPath:g,tocPath:h,coverPath:i,spineNodeIndex:j,spineIndexByURL:l}):void console.error("No Spine Found"):void console.error("No Manifest Found"):void console.error("No Metadata Found"):void console.error("Package File Not Found")},EPUBJS.Parser.prototype.findNavPath=function(a){var b=a.querySelector("item[properties^='nav']");return b?b.getAttribute("href"):!1},EPUBJS.Parser.prototype.findTocPath=function(a){var b=a.querySelector("item[media-type='application/x-dtbncx+xml']");return b?b.getAttribute("href"):!1},EPUBJS.Parser.prototype.findCoverPath=function(a){var b=a.querySelector("item[properties='cover-image']");return b?b.getAttribute("href"):!1},EPUBJS.Parser.prototype.metadata=function(a){var b={},c=this;return b.bookTitle=c.getElementText(a,"title"),b.creator=c.getElementText(a,"creator"),b.description=c.getElementText(a,"description"),b.pubdate=c.getElementText(a,"date"),b.publisher=c.getElementText(a,"publisher"),b.identifier=c.getElementText(a,"identifier"),b.language=c.getElementText(a,"language"),b.rights=c.getElementText(a,"rights"),b.modified_date=c.querySelectorText(a,"meta[property='dcterms:modified']"),b.layout=c.querySelectorText(a,"meta[property='rendition:layout']"),b.orientation=c.querySelectorText(a,"meta[property='rendition:orientation']"),b.spread=c.querySelectorText(a,"meta[property='rendition:spread']"),b},EPUBJS.Parser.prototype.getElementText=function(a,b){var c,d=a.getElementsByTagNameNS("http://purl.org/dc/elements/1.1/",b);return d&&0!==d.length?(c=d[0],c.childNodes.length?c.childNodes[0].nodeValue:""):""},EPUBJS.Parser.prototype.querySelectorText=function(a,b){var c=a.querySelector(b);return c&&c.childNodes.length?c.childNodes[0].nodeValue:""},EPUBJS.Parser.prototype.manifest=function(a){var b=this.baseUrl,c={},d=a.querySelectorAll("item"),e=Array.prototype.slice.call(d);return e.forEach(function(a){var d=a.getAttribute("id"),e=a.getAttribute("href")||"",f=a.getAttribute("media-type")||"",g=a.getAttribute("properties")||"";c[d]={href:e,url:b+e,type:f,properties:g}}),c},EPUBJS.Parser.prototype.spine=function(a,b){var c=[],d=a.getElementsByTagName("itemref"),e=Array.prototype.slice.call(d),f=Array.prototype.indexOf.call(a.parentNode.childNodes,a),g=new EPUBJS.EpubCFI;return e.forEach(function(a,d){var e=a.getAttribute("idref"),h=g.generateChapterComponent(f,d,e),i=a.getAttribute("properties")||"",j=i.length?i.split(" "):[],k=b[e].properties,l=k.length?k.split(" "):[],m={id:e,linear:a.getAttribute("linear")||"",properties:j,manifestProperties:l,href:b[e].href,url:b[e].url,index:d,cfiBase:h,cfi:"epub("+h+")"};c.push(m)}),c},EPUBJS.Parser.prototype.nav=function(a,b,c){function 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Array.prototype.slice.call(a.childNodes).forEach(function(a){("a"==a.tagName||"span"==a.tagName)&&(b=a)}),b}function d(a){var d=[],e=b(a),f=Array.prototype.slice.call(e),g=f.length;return 0===g?!1:(f.forEach(function(a){var b,e,f,g=(a.getAttribute("id")||!1,c(a)),h=g.getAttribute("href")||"",i=g.textContent||"",j=parseInt(i),k=h.indexOf("epubcfi");-1!=k?(b=h.split("#"),e=b[0],f=b.length>1?b[1]:!1,d.push({cfi:f,href:h,packageUrl:e,page:j})):d.push({href:h,page:j})}),d)}var e=a.querySelector('nav[*|type="page-list"]');return e?d(e):[]},EPUBJS.Render.Iframe=function(){this.iframe=null,this.document=null,this.window=null,this.docEl=null,this.bodyEl=null,this.leftPos=0,this.pageWidth=0},EPUBJS.Render.Iframe.prototype.create=function(){return this.iframe=document.createElement("iframe"),this.iframe.id="epubjs-iframe:"+EPUBJS.core.uuid(),this.iframe.scrolling="no",this.iframe.seamless="seamless",this.iframe.style.border="none",this.iframe.addEventListener("load",this.loaded.bind(this),!1),this.iframe},EPUBJS.Render.Iframe.prototype.load=function(a){var b=this,c=new RSVP.defer;return a.url().then(function(a){b.leftPos=0,this.window&&this.unload(),this.iframe.onload=function(){b.document=b.iframe.contentDocument,b.docEl=b.document.documentElement,b.headEl=b.document.head,b.bodyEl=b.document.body,b.window=b.iframe.contentWindow,b.window.addEventListener("resize",b.resized.bind(b),!1),b.bodyEl&&(b.bodyEl.style.margin="0"),c.resolve(b.docEl)},this.iframe.onerror=function(a){c.reject({message:"Error Loading Contents: "+a,stack:(new Error).stack})},this.iframe.contentWindow.location.replace(a)}.bind(this)),c.promise},EPUBJS.Render.Iframe.prototype.loaded=function(){var a=this.iframe.contentWindow.location.href;"about:blank"!=a&&this.trigger("render:loaded",a)},EPUBJS.Render.Iframe.prototype.resize=function(a,b){this.iframe&&(this.iframe.height=b,isNaN(a)||a%2===0||(a+=1),this.iframe.width=a,this.width=this.iframe.getBoundingClientRect().width||a,this.height=this.iframe.getBoundingClientRect().height||b)},EPUBJS.Render.Iframe.prototype.resized=function(){this.width=this.iframe.getBoundingClientRect().width,this.height=this.iframe.getBoundingClientRect().height},EPUBJS.Render.Iframe.prototype.totalWidth=function(){return this.docEl.scrollWidth},EPUBJS.Render.Iframe.prototype.totalHeight=function(){return this.docEl.scrollHeight},EPUBJS.Render.Iframe.prototype.setPageDimensions=function(a,b){this.pageWidth=a,this.pageHeight=b},EPUBJS.Render.Iframe.prototype.setLeft=function(a){this.document.defaultView.scrollTo(a,0)},EPUBJS.Render.Iframe.prototype.setStyle=function(a,b,c){c&&(a=EPUBJS.core.prefixed(a)),this.bodyEl&&(this.bodyEl.style[a]=b)},EPUBJS.Render.Iframe.prototype.removeStyle=function(a){this.bodyEl&&(this.bodyEl.style[a]="")},EPUBJS.Render.Iframe.prototype.addHeadTag=function(a,b,c){var d=c||this.document,e=d.createElement(a),f=d.head;for(var g in b)e.setAttribute(g,b[g]);f&&f.insertBefore(e,f.firstChild)},EPUBJS.Render.Iframe.prototype.page=function(a){this.leftPos=this.pageWidth*(a-1),this.setLeft(this.leftPos)},EPUBJS.Render.Iframe.prototype.getPageNumberByElement=function(a){var b,c;if(a)return b=this.leftPos+a.getBoundingClientRect().left,c=Math.floor(b/this.pageWidth)+1},EPUBJS.Render.Iframe.prototype.getPageNumberByRect=function(a){var b,c;return b=this.leftPos+a.left,c=Math.floor(b/this.pageWidth)+1},EPUBJS.Render.Iframe.prototype.getBaseElement=function(){return this.bodyEl},EPUBJS.Render.Iframe.prototype.isElementVisible=function(a){var b,c;return a&&"function"==typeof a.getBoundingClientRect&&(b=a.getBoundingClientRect(),c=b.left,0!==b.width&&0!==b.height&&c>=0&&c<this.pageWidth)?!0:!1},EPUBJS.Render.Iframe.prototype.scroll=function(a){this.iframe.scrolling=a?"yes":"no"},EPUBJS.Render.Iframe.prototype.unload=function(){this.window.removeEventListener("resize",this.resized)},RSVP.EventTarget.mixin(EPUBJS.Render.Iframe.prototype),EPUBJS.Renderer=function(a,b){this.listenedEvents=["keydown","keyup","keypressed","mouseup","mousedown","click"],this.upEvent="mouseup",this.downEvent="mousedown","ontouchstart"in document.documentElement&&(this.listenedEvents.push("touchstart","touchend"),this.upEvent="touchend",this.downEvent="touchstart"),a&&"undefined"!=typeof EPUBJS.Render[a]?this.render=new EPUBJS.Render[a]:console.error("Not a Valid Rendering Method"),this.render.on("render:loaded",this.loaded.bind(this)),this.caches={},this.epubcfi=new EPUBJS.EpubCFI,this.spreads=!0,this.isForcedSingle=!1,this.resized=_.debounce(this.onResized.bind(this),100),this.layoutSettings={},this.hidden=b||!1,EPUBJS.Hooks.mixin(this),this.getHooks("beforeChapterDisplay"),this._q=EPUBJS.core.queue(this),this._moving=!1},EPUBJS.Renderer.prototype.Events=["renderer:keydown","renderer:keyup","renderer:keypressed","renderer:mouseup","renderer:mousedown","renderer:click","renderer:touchstart","renderer:touchend","renderer:selected","renderer:chapterUnloaded","renderer:chapterDisplayed","renderer:locationChanged","renderer:visibleLocationChanged","renderer:resized","renderer:spreads"],EPUBJS.Renderer.prototype.initialize=function(a,b,c){this.container=a,this.element=this.render.create(),this.initWidth=b,this.initHeight=c,this.width=b||this.container.clientWidth,this.height=c||this.container.clientHeight,this.container.appendChild(this.element),b&&c?this.render.resize(this.width,this.height):this.render.resize("100%","100%"),document.addEventListener("orientationchange",this.onResized)},EPUBJS.Renderer.prototype.displayChapter=function(a,b){return this._moving?void console.error("Rendering In Progress"):(this._moving=!0,a.url().then(function(){return this.currentChapter&&(this.currentChapter.unload(),this.render.window&&this.render.window.removeEventListener("resize",this.resized),this.removeEventListeners(),this.removeSelectionListeners(),this.trigger("renderer:chapterUnloaded"),this.contents=null,this.doc=null,this.pageMap=null),this.currentChapter=a,this.chapterPos=1,this.currentChapterCfiBase=a.cfiBase,this.layoutSettings=this.reconcileLayoutSettings(b,a.properties),this.load(a)}.bind(this)))},EPUBJS.Renderer.prototype.load=function(a){var b=new RSVP.defer;return this.layoutMethod=this.determineLayout(this.layoutSettings),this.layout=new EPUBJS.Layout[this.layoutMethod],this.visible(!1),render=this.render.load(a),render.then(function(a){this.currentChapter.setDocument(this.render.document),this.contents=a,this.doc=this.render.document,this.formated=this.layout.format(a,this.render.width,this.render.height,this.gap),this.render.setPageDimensions(this.formated.pageWidth,this.formated.pageHeight),this.initWidth||this.initHeight||this.render.window.addEventListener("resize",this.resized,!1),this.addEventListeners(),this.addSelectionListeners(),this.beforeDisplay(function(){var a=this.layout.calculatePages(),c=this.currentChapter,d=this._q.length();this._moving=!1,this.updatePages(a),this.visibleRangeCfi=this.getVisibleRangeCfi(),this.currentLocationCfi=this.visibleRangeCfi.start,0===d&&(this.trigger("renderer:locationChanged",this.currentLocationCfi),this.trigger("renderer:visibleRangeChanged",this.visibleRangeCfi)),c.cfi=this.currentLocationCfi,this.trigger("renderer:chapterDisplayed",c),this.visible(!0),b.resolve(this)}.bind(this))}.bind(this)),b.promise},EPUBJS.Renderer.prototype.loaded=function(a){this.trigger("render:loaded",a)},EPUBJS.Renderer.prototype.reconcileLayoutSettings=function(a,b){var c={};for(var d in a)a.hasOwnProperty(d)&&(c[d]=a[d]);return b.forEach(function(a){var b,d,e=a.replace("rendition:",""),f=e.indexOf("-");-1!=f&&(b=e.slice(0,f),d=e.slice(f+1),c[b]=d)}),c},EPUBJS.Renderer.prototype.determineLayout=function(a){var b=this.determineSpreads(this.minSpreadWidth),c=b?"ReflowableSpreads":"Reflowable",d=!1;return"pre-paginated"===a.layout&&(c="Fixed",d=!0,b=!1),"reflowable"===a.layout&&"none"===a.spread&&(c="Reflowable",d=!1,b=!1),"reflowable"===a.layout&&"both"===a.spread&&(c="ReflowableSpreads",d=!1,b=!0),this.spreads=b,this.render.scroll(d),this.trigger("renderer:spreads",b),c},EPUBJS.Renderer.prototype.beforeDisplay=function(a){this.triggerHooks("beforeChapterDisplay",a,this)},EPUBJS.Renderer.prototype.updatePages=function(){this.pageMap=this.mapPage(),this.displayedPages=this.spreads?Math.ceil(this.pageMap.length/2):this.pageMap.length,this.currentChapter.pages=this.pageMap.length,this._q.flush()},EPUBJS.Renderer.prototype.reformat=function(){var a,b=this;this.contents&&(spreads=this.determineSpreads(this.minSpreadWidth),spreads!=this.spreads&&(this.spreads=spreads,this.layoutMethod=this.determineLayout(this.layoutSettings),this.layout=new EPUBJS.Layout[this.layoutMethod]),this.chapterPos=1,this.render.page(1),b.formated=b.layout.format(b.contents,b.render.width,b.render.height,b.gap),b.render.setPageDimensions(b.formated.pageWidth,b.formated.pageHeight),a=b.layout.calculatePages(),b.updatePages(a),b.currentLocationCfi&&b.gotoCfi(b.currentLocationCfi))},EPUBJS.Renderer.prototype.visible=function(a){return"undefined"==typeof a?this.element.style.visibility:void(a!==!0||this.hidden?a===!1&&(this.element.style.visibility="hidden"):this.element.style.visibility="visible")},EPUBJS.Renderer.prototype.remove=function(){this.render.window&&(this.render.unload(),this.render.window.removeEventListener("resize",this.resized),this.removeEventListeners(),this.removeSelectionListeners()),this.container.removeChild(this.element)},EPUBJS.Renderer.prototype.applyStyles=function(a){for(var b in a)this.render.setStyle(b,a[b])},EPUBJS.Renderer.prototype.setStyle=function(a,b,c){this.render.setStyle(a,b,c)},EPUBJS.Renderer.prototype.removeStyle=function(a){this.render.removeStyle(a)},EPUBJS.Renderer.prototype.applyHeadTags=function(a){for(var b in a)this.render.addHeadTag(b,a[b])},EPUBJS.Renderer.prototype.page=function(a){return this.pageMap?a>=1&&a<=this.displayedPages?(this.chapterPos=a,this.render.page(a),this.visibleRangeCfi=this.getVisibleRangeCfi(),this.currentLocationCfi=this.visibleRangeCfi.start,this.trigger("renderer:locationChanged",this.currentLocationCfi),this.trigger("renderer:visibleRangeChanged",this.visibleRangeCfi),!0):!1:(console.warn("pageMap not set, queuing"),this._q.enqueue("page",arguments),!0)},EPUBJS.Renderer.prototype.nextPage=function(){return this.page(this.chapterPos+1)},EPUBJS.Renderer.prototype.prevPage=function(){return this.page(this.chapterPos-1)},EPUBJS.Renderer.prototype.pageByElement=function(a){var b;a&&(b=this.render.getPageNumberByElement(a),this.page(b))},EPUBJS.Renderer.prototype.lastPage=function(){return this._moving?this._q.enqueue("lastPage",arguments):void this.page(this.displayedPages)},EPUBJS.Renderer.prototype.firstPage=function(){this.page(1)},EPUBJS.Renderer.prototype.section=function(a){var b=this.doc.getElementById(a);b&&this.pageByElement(b)},EPUBJS.Renderer.prototype.firstElementisTextNode=function(a){var b=a.childNodes,c=b.length;return c&&b[0]&&3===b[0].nodeType&&b[0].textContent.trim().length?!0:!1},EPUBJS.Renderer.prototype.walk=function(a,b,c){for(var d,e,f,g,h=a,i=[h],j=1e4,k=0;!d&&i.length;){if(a=i.shift(),this.containsPoint(a,b,c)&&this.firstElementisTextNode(a)&&(d=a),!d&&a&&a.childElementCount>0){if(e=a.children,!e||!e.length)return d;f=e.length?e.length:0;for(var l=f-1;l>=0;l--)e[l]!=g&&i.unshift(e[l])}if(!d&&0===i.length&&h&&null!==h.parentNode&&(i.push(h.parentNode),g=h,h=h.parentNode),k++,k>j){console.error("ENDLESS LOOP");break}}return d},EPUBJS.Renderer.prototype.containsPoint=function(a,b){var c;return a&&"function"==typeof a.getBoundingClientRect&&(c=a.getBoundingClientRect(),0!==c.width&&0!==c.height&&c.left>=b&&b<=c.left+c.width)?!0:!1},EPUBJS.Renderer.prototype.textSprint=function(a,b){for(var c,d=document.createTreeWalker(a,NodeFilter.SHOW_TEXT,{acceptNode:function(a){return/^\s*$/.test(a.data)?NodeFilter.FILTER_REJECT:NodeFilter.FILTER_ACCEPT}},!1);c=d.nextNode();)b(c)},EPUBJS.Renderer.prototype.sprint=function(a,b){for(var c,d=document.createTreeWalker(a,NodeFilter.SHOW_ELEMENT,null,!1);c=d.nextNode();)b(c)},EPUBJS.Renderer.prototype.mapPage=function(){var a,b,c=this,d=[],e=this.render.getBaseElement(),f=1,g=this.layout.colWidth+this.layout.gap,h=this.formated.pageWidth*(this.chapterPos-1),i=g*f-h,j=0,k=function(a){var b,c,d=Array.prototype.slice.call(a.childNodes);if(a.nodeType==Node.ELEMENT_NODE){if(c=document.createRange(),c.selectNodeContents(a),b=c.getBoundingClientRect(),!b||0===b.width&&0===b.height)return;b.left>j&&d.forEach(function(a){a.nodeType==Node.TEXT_NODE&&a.textContent.trim().length&&l(a)}),b.right>j&&d.forEach(function(a){a.nodeType==Node.TEXT_NODE&&a.textContent.trim().length&&l(a)})}},l=function(e){var k=c.splitTextNodeIntoWordsRanges(e);k.forEach(function(e){var k=e.getBoundingClientRect();!k||0===k.width&&0===k.height||(k.left+k.width<i?d[f-1]||(e.collapse(!0),b=c.currentChapter.cfiFromRange(e),d.push({start:b,end:null})):(a&&(a.collapse(!0),b=c.currentChapter.cfiFromRange(a),d[d.length-1].end=b),e.collapse(!0),b=c.currentChapter.cfiFromRange(e),d.push({start:b,end:null}),f+=1,i=g*f-h,j=i),a=e)})};return this.sprint(e,k),a&&(a.collapse(!0),b=c.currentChapter.cfiFromRange(a),d[d.length-1].end=b),d.length||(range=this.doc.createRange(),range.selectNodeContents(e),range.collapse(!0),b=c.currentChapter.cfiFromRange(range),d.push({start:b,end:b})),a=null,ranges=null,range=null,e=null,d},EPUBJS.Renderer.prototype.splitTextNodeIntoWordsRanges=function(a){var b,c=[],d=a.textContent.trim();if(pos=d.indexOf(" "),-1===pos)return b=this.doc.createRange(),b.selectNodeContents(a),[b];for(b=this.doc.createRange(),b.setStart(a,0),b.setEnd(a,pos),c.push(b),b=!1;-1!=pos;)pos=d.indexOf(" ",pos+1),pos>0&&(b&&(b.setEnd(a,pos),c.push(b)),b=this.doc.createRange(),b.setStart(a,pos+1));return b&&(b.setEnd(a,d.length),c.push(b)),c},EPUBJS.Renderer.prototype.rangePosition=function(a){var b,c;return c=a.getClientRects(),c.length?b=c[0]:null},EPUBJS.Renderer.prototype.getPageCfi=function(){var a;return this.spreads?(a=2*this.chapterPos,startRange=this.pageMap[a-2]):(a=this.chapterPos,startRange=this.pageMap[a-1]),this.pageMap[2*this.chapterPos-1].start},EPUBJS.Renderer.prototype.getRange=function(a,b,c){var d,e=this.doc.createRange();return c=!0,"undefined"==typeof document.caretPositionFromPoint||c?"undefined"==typeof document.caretRangeFromPoint||c?(this.visibileEl=this.findElementAfter(a,b),e.setStart(this.visibileEl,1)):e=this.doc.caretRangeFromPoint(a,b):(d=this.doc.caretPositionFromPoint(a,b),e.setStart(d.offsetNode,d.offset)),e},EPUBJS.Renderer.prototype.pagesInCurrentChapter=function(){var a,b;return this.pageMap?(b=this.pageMap.length,a=this.spreads?Math.ceil(b/2):b):(console.warn("page map not loaded"),!1)},EPUBJS.Renderer.prototype.currentRenderedPage=function(){var a;return this.pageMap?a=this.spreads&&this.layout.pageCount>1?2*this.chapterPos:this.chapterPos:(console.warn("page map not loaded"),!1)},EPUBJS.Renderer.prototype.getRenderedPagesLeft=function(){var a,b,c;return this.pageMap?(b=this.pageMap.length,a=this.spreads?2*this.chapterPos:this.chapterPos,c=b-a):(console.warn("page map not loaded"),!1)},EPUBJS.Renderer.prototype.getVisibleRangeCfi=function(){var a,b,c;return this.pageMap?(this.spreads?(a=2*this.chapterPos,b=this.pageMap[a-2],c=b,this.layout.pageCount>1&&(c=this.pageMap[a-1])):(a=this.chapterPos,b=this.pageMap[a-1],c=b),b||(console.warn("page range miss:",a,this.pageMap),b=this.pageMap[this.pageMap.length-1],c=b),{start:b.start,end:c.end}):(console.warn("page map not loaded"),!1)},EPUBJS.Renderer.prototype.gotoCfi=function(a){var b,c,d;return this._moving?this._q.enqueue("gotoCfi",arguments):(_.isString(a)&&(a=this.epubcfi.parse(a)),void("undefined"==typeof 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