epubjs/build/epub.min.js

Render ePub documents in the browser, across many devices

/*!
 * @overview RSVP - a tiny implementation of Promises/A+.
 * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors
 * @license   Licensed under MIT license
 *            See https://raw.githubusercontent.com/tildeio/rsvp.js/master/LICENSE
 * @version   3.1.0
 */
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EPUBJS.EpubCFI,d=0;0!==a.length&&(b.pageList=b.contents.pageList=a,b.pageList.forEach(function(a){a.cfi||(d+=1,c.generateCfiFromHref(a.href,b).then(function(c){a.cfi=c,a.packageUrl=b.settings.packageUrl,d-=1,0===d&&(b.pagination.process(b.pageList),b.ready.pageList.resolve(b.pageList))}))}),d||(b.pagination.process(b.pageList),b.ready.pageList.resolve(b.pageList)))},function(){b.ready.pageList.resolve([])})):b.contents.tocPath?(b.settings.tocUrl=b.settings.contentsPath+b.contents.tocPath,b.loadXml(b.settings.tocUrl).then(function(a){return c.toc(a,b.spineIndexByURL,b.spine)}).then(function(a){b.toc=b.contents.toc=a,b.ready.toc.resolve(b.contents.toc)},function(){b.ready.toc.resolve(!1)})):b.ready.toc.resolve(!1)},EPUBJS.Book.prototype.createHiddenRender=function(a,b,c){var d,e,f=this.element.getBoundingClientRect(),g=b||this.settings.width||f.width,h=c||this.settings.height||f.height;return a.setMinSpreadWidth(this.settings.minSpreadWidth),a.setGap(this.settings.gap),this._registerReplacements(a),this.settings.forceSingle&&a.forceSingle(!0),d=document.createElement("div"),d.style.visibility="hidden",d.style.overflow="hidden",d.style.width="0",d.style.height="0",this.element.appendChild(d),e=document.createElement("div"),e.style.visibility="hidden",e.style.overflow="hidden",e.style.width=g+"px",e.style.height=h+"px",d.appendChild(e),a.initialize(e),d},EPUBJS.Book.prototype.generatePageList=function(a,b){{var c=[],d=new EPUBJS.Renderer(this.settings.render_method,!1),e=this.createHiddenRender(d,a,b),f=new RSVP.defer,g=-1,h=this.spine.length,i=0,j=function(a){var b,e=g+1,f=a||new RSVP.defer;return e>=h?f.resolve():(g=e,b=new EPUBJS.Chapter(this.spine[g],this.store),d.displayChapter(b,this.globalLayoutProperties).then(function(){d.pageMap.forEach(function(a){i+=1,c.push({cfi:a.start,page:i})}),d.pageMap.length%2>0&&d.spreads&&(i+=1,c.push({cfi:d.pageMap[d.pageMap.length-1].end,page:i})),setTimeout(function(){j(f)},1)})),f.promise}.bind(this);j().then(function(){d.remove(),this.element.removeChild(e),f.resolve(c)}.bind(this))}return f.promise},EPUBJS.Book.prototype.generatePagination=function(a,b){var c=this,d=new RSVP.defer;return this.ready.spine.promise.then(function(){c.generatePageList(a,b).then(function(a){c.pageList=c.contents.pageList=a,c.pagination.process(a),c.ready.pageList.resolve(c.pageList),d.resolve(c.pageList)})}),d.promise},EPUBJS.Book.prototype.loadPagination=function(a){var b=JSON.parse(a);return b&&b.length&&(this.pageList=b,this.pagination.process(this.pageList),this.ready.pageList.resolve(this.pageList)),this.pageList},EPUBJS.Book.prototype.getPageList=function(){return this.ready.pageList.promise},EPUBJS.Book.prototype.getMetadata=function(){return this.ready.metadata.promise},EPUBJS.Book.prototype.getToc=function(){return this.ready.toc.promise},EPUBJS.Book.prototype.networkListeners=function(){var a=this;window.addEventListener("offline",function(){a.online=!1,a.settings.storage&&a.fromStorage(!0),a.trigger("book:offline")},!1),window.addEventListener("online",function(){a.online=!0,a.settings.storage&&a.fromStorage(!1),a.trigger("book:online")},!1)},EPUBJS.Book.prototype.listenToRenderer=function(a){var b=this;a.Events.forEach(function(c){a.on(c,function(a){b.trigger(c,a)})}),a.on("renderer:visibleRangeChanged",function(a){var b,c,d,e=[];this.pageList.length>0&&(b=this.pagination.pageFromCfi(a.start),d=this.pagination.percentageFromPage(b),e.push(b),a.end&&(c=this.pagination.pageFromCfi(a.end),e.push(c)),this.trigger("book:pageChanged",{anchorPage:b,percentage:d,pageRange:e}))}.bind(this)),a.on("render:loaded",this.loadChange.bind(this))},EPUBJS.Book.prototype.loadChange=function(a){var b,c,d=EPUBJS.core.uri(a),e=EPUBJS.core.uri(this.currentChapter.absolute);d.path!=e.path?(console.warn("Miss Match",d.path,this.currentChapter.absolute),b=this.spineIndexByURL[d.filename],c=new EPUBJS.Chapter(this.spine[b],this.store),this.currentChapter=c,this.renderer.currentChapter=c,this.renderer.afterLoad(this.renderer.render.docEl),this.renderer.beforeDisplay(function(){this.renderer.afterDisplay()}.bind(this))):this._rendering||this.renderer.reformat()},EPUBJS.Book.prototype.unlistenToRenderer=function(a){a.Events.forEach(function(b){a.off(b)})},EPUBJS.Book.prototype.loadXml=function(a){return this.settings.fromStorage?this.store.getXml(a,this.settings.encoding):this.settings.contained?this.zip.getXml(a,this.settings.encoding):EPUBJS.core.request(a,"xml",this.settings.withCredentials)},EPUBJS.Book.prototype.urlFrom=function(a){var b,c=EPUBJS.core.uri(a),d=c.protocol,e="/"==c.path[0],f=window.location,g=f.origin||f.protocol+"//"+f.host,h=document.getElementsByTagName("base");return h.length&&(b=h[0].href),c.protocol?c.origin+c.path:!d&&e?(b||g)+c.path:d||e?void 0:EPUBJS.core.resolveUrl(b||f.pathname,c.path)},EPUBJS.Book.prototype.unarchive=function(a){return this.zip=new EPUBJS.Unarchiver,this.store=this.zip,this.zip.open(a)},EPUBJS.Book.prototype.isContained=function(a){var 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(EPUBJS.core.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.metadata.direction&&c.renderer.setDirection(c.metadata.direction),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):(EPUBJS.core.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,this._needsAssetReplacement()&&g.registerHook("beforeChapterRender",[EPUBJS.replace.head,EPUBJS.replace.resources,EPUBJS.replace.svg],!0),h.currentChapter=g,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===!1&&h.settings.contained===!1&&h.preloadNextChapter(),h._rendering=!1,h._displayQ.dequeue(),0===h._displayQ.length()&&h._gotoQ.dequeue()},function(a){console.error("Could not load Chapter: "+g.absolute,a),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=EPUBJS.core.values(this.manifest);return this.store.put(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.toStorage=function(){var a=this.settings.bookKey;this.store.isStored(a).then(function(b){return b===!0?(this.settings.stored=!0,!0):this.storeOffline().then(function(){this.store.token(a,!0)}.bind(this))}.bind(this))},EPUBJS.Book.prototype.fromStorage=function(a){[EPUBJS.replace.head,EPUBJS.replace.resources,EPUBJS.replace.svg];this.contained||this.settings.contained||(this.online&&this.opened.then(this.toStorage.bind(this)),this.store&&this.settings.fromStorage&&a===!1?(this.settings.fromStorage=!1,this.store.off("offline"),this.store=!1):this.settings.fromStorage||(this.store=new EPUBJS.Storage(this.settings.credentials),this.store.on("offline",function(a){a?(this.offline=!0,this.settings.fromStorage=!0,this.trigger("book:offline")):(this.offline=!1,this.settings.fromStorage=!1,this.trigger("book:online"))}.bind(this))))},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,this.settings.withCredentials),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.renderer&&this.renderer.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)},EPUBJS.Book.prototype._needsAssetReplacement=function(){return this.settings.fromStorage?!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",!1),EPUBJS.Chapter=function(a,b,c){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.credentials=c,this.epubcfi=new EPUBJS.EpubCFI,this.deferred=new RSVP.defer,this.loaded=this.deferred.promise,EPUBJS.Hooks.mixin(this),this.getHooks("beforeChapterRender"),this.caches={}},EPUBJS.Chapter.prototype.load=function(a,b){var c,d=a||this.store,e=b||this.credentials;return c=d?d.getXml(this.absolute):EPUBJS.core.request(this.absolute,"xml",e),c.then(function(a){this.setDocument(a),this.deferred.resolve(this)}.bind(this)),c},EPUBJS.Chapter.prototype.render=function(){return this.load().then(function(a){var b=a.querySelector("head"),c=a.createElement("base");return c.setAttribute("href",this.absolute),b.insertBefore(c,b.firstChild),this.contents=a,new RSVP.Promise(function(b){this.triggerHooks("beforeChapterRender",function(){b(a)}.bind(this),this)}.bind(this))}.bind(this)).then(function(a){var b=new XMLSerializer,c=b.serializeToString(a);return c}.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 this.ID},EPUBJS.Chapter.prototype.unload=function(a){this.document=null,this.tempUrl&&a&&(a.revokeUrl(this.tempUrl),this.tempUrl=!1)},EPUBJS.Chapter.prototype.setDocument=function(a){{var b=a.namespaceURI;a.doctype}this.document=a.implementation.createDocument(b,null,null),this.contents=this.document.importNode(a.documentElement,!0),this.document.appendChild(this.contents),!this.document.evaluate&&document.evaluate&&(this.document.evaluate=document.evaluate)},EPUBJS.Chapter.prototype.cfiFromRange=function(a){var b,c,d,e,f,g;if(this.document){if("undefined"!=typeof document.evaluate){if(c=EPUBJS.core.getElementXPath(a.startContainer),d=EPUBJS.core.getElementXPath(a.endContainer),e=this.document.evaluate(c,this.document,EPUBJS.core.nsResolver,XPathResult.FIRST_ORDERED_NODE_TYPE,null).singleNodeValue,a.collapsed||(f=this.document.evaluate(d,this.document,EPUBJS.core.nsResolver,XPathResult.FIRST_ORDERED_NODE_TYPE,null).singleNodeValue),b=this.document.createRange(),e)try{b.setStart(e,a.startOffset),!a.collapsed&&f&&b.setEnd(f,a.endOffset)}catch(h){console.log("missed"),e=!1}e||(console.log("not found, try fuzzy match"),cleanStartTextContent=EPUBJS.core.cleanStringForXpath(a.startContainer.textContent),c="//text()[contains(.,"+cleanStartTextContent+")]",e=this.document.evaluate(c,this.document,EPUBJS.core.nsResolver,XPathResult.FIRST_ORDERED_NODE_TYPE,null).singleNodeValue,e&&(b.setStart(e,a.startOffset),a.collapsed||(g=EPUBJS.core.cleanStringForXpath(a.endContainer.textContent),d="//text()[contains(.,"+g+")]",f=this.document.evaluate(d,this.document,EPUBJS.core.nsResolver,XPathResult.FIRST_ORDERED_NODE_TYPE,null).singleNodeValue,f&&b.setEnd(f,a.endOffset))))}else b=a;return this.epubcfi.generateCfiFromRange(b,this.cfiBase)}},EPUBJS.Chapter.prototype.find=function(a){var b=this,c=[],d=a.toLowerCase(),e=function(a){for(var 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