/**
* PDFObject v2.2.6
* https://github.com/pipwerks/PDFObject
* @license
* Copyright (c) 2008-2021 Philip Hutchison
* MIT-style license: http://pipwerks.mit-license.org/
* UMD module pattern from https://github.com/umdjs/umd/blob/master/templates/returnExports.js
*/
(function (root, factory) {
if (typeof define === "function" && define.amd) {
// AMD. Register as an anonymous module.
define([], factory);
} else if (typeof module === "object" && module.exports) {
// Node. Does not work with strict CommonJS, but
// only CommonJS-like environments that support module.exports,
// like Node.
module.exports = factory();
} else {
// Browser globals (root is window)
root.PDFObject = factory();
}
}(this, function () {
"use strict";
//PDFObject is designed for client-side (browsers), not server-side (node)
//Will choke on undefined navigator and window vars when run on server
//Return boolean false and exit function when running server-side
if( typeof window === "undefined" ||
window.navigator === undefined ||
window.navigator.userAgent === undefined ||
window.navigator.mimeTypes === undefined){
return false;
}
let pdfobjectversion = "2.2.6";
let nav = window.navigator;
let ua = window.navigator.userAgent;
//Time to jump through hoops -- browser vendors do not make it easy to detect PDF support.
/*
IE11 still uses ActiveX for Adobe Reader, but IE 11 doesn't expose window.ActiveXObject the same way
previous versions of IE did. window.ActiveXObject will evaluate to false in IE 11, but "ActiveXObject"
in window evaluates to true.
MS Edge does not support ActiveX so this test will evaluate false
*/
let isIE = ("ActiveXObject" in window);
/*
There is a coincidental correlation between implementation of window.promises and native PDF support in desktop browsers
We use this to assume if the browser supports promises it supports embedded PDFs
Is this fragile? Sort of. But browser vendors removed mimetype detection, so we're left to improvise
*/
let isModernBrowser = (window.Promise !== undefined);
//Older browsers still expose the mimeType
let supportsPdfMimeType = (nav.mimeTypes["application/pdf"] !== undefined);
//Safari on iPadOS doesn't report as 'mobile' when requesting desktop site, yet still fails to embed PDFs
let isSafariIOSDesktopMode = ( nav.platform !== undefined &&
nav.platform === "MacIntel" &&
nav.maxTouchPoints !== undefined &&
nav.maxTouchPoints > 1 );
//Quick test for mobile devices.
let isMobileDevice = (isSafariIOSDesktopMode || /Mobi|Tablet|Android|iPad|iPhone/.test(ua));
//Safari desktop requires special handling
let isSafariDesktop = ( !isMobileDevice &&
nav.vendor !== undefined &&
/Apple/.test(nav.vendor) &&
/Safari/.test(ua) );
//Firefox started shipping PDF.js in Firefox 19. If this is Firefox 19 or greater, assume PDF.js is available
let isFirefoxWithPDFJS = (!isMobileDevice && /irefox/.test(ua) && ua.split("rv:").length > 1) ? (parseInt(ua.split("rv:")[1].split(".")[0], 10) > 18) : false;
/* ----------------------------------------------------
Supporting functions
---------------------------------------------------- */
let createAXO = function (type){
var ax;
try {
ax = new ActiveXObject(type);
} catch (e) {
ax = null; //ensure ax remains null
}
return ax;
};
//If either ActiveX support for "AcroPDF.PDF" or "PDF.PdfCtrl" are found, return true
//Constructed as a method (not a prop) to avoid unneccesarry overhead -- will only be evaluated if needed
let supportsPdfActiveX = function (){ return !!(createAXO("AcroPDF.PDF") || createAXO("PDF.PdfCtrl")); };
//Determines whether PDF support is available
let supportsPDFs = (
//As of Sept 2020 no mobile browsers properly support PDF embeds
!isMobileDevice && (
//We're moving into the age of MIME-less browsers. They mostly all support PDF rendering without plugins.
isModernBrowser ||
//Modern versions of Firefox come bundled with PDFJS
isFirefoxWithPDFJS ||
//Browsers that still support the original MIME type check
supportsPdfMimeType ||
//Pity the poor souls still using IE
(isIE && supportsPdfActiveX())
)
);
//Create a fragment identifier for using PDF Open parameters when embedding PDF
let buildURLFragmentString = function(pdfParams){
let string = "";
let prop;
if(pdfParams){
for (prop in pdfParams) {
if (pdfParams.hasOwnProperty(prop)) {
string += encodeURIComponent(prop) + "=" + encodeURIComponent(pdfParams[prop]) + "&";
}
}
//The string will be empty if no PDF Params found
if(string){
string = "#" + string;
//Remove last ampersand
string = string.slice(0, string.length - 1);
}
}
return string;
};
let embedError = function (msg, suppressConsole){
if(!suppressConsole){
// console.log("[PDFObject] " + msg); //added by EP developer
}
return false;
};
let emptyNodeContents = function (node){
while(node.firstChild){
node.removeChild(node.firstChild);
}
};
let getTargetElement = function (targetSelector){
//Default to body for full-browser PDF
let targetNode = document.body;
//If a targetSelector is specified, check to see whether
//it's passing a selector, jQuery object, or an HTML element
if(typeof targetSelector === "string"){
//Is CSS selector
targetNode = document.querySelector(targetSelector);
} else if (window.jQuery !== undefined && targetSelector instanceof jQuery && targetSelector.length) {
//Is jQuery element. Extract HTML node
targetNode = targetSelector.get(0);
} else if (targetSelector.nodeType !== undefined && targetSelector.nodeType === 1){
//Is HTML element
targetNode = targetSelector;
}
return targetNode;
};
let generatePDFJSMarkup = function (targetNode, url, pdfOpenFragment, PDFJS_URL, id, omitInlineStyles){
//Ensure target element is empty first
emptyNodeContents(targetNode);
let fullURL = PDFJS_URL + "?file=" + encodeURIComponent(url) + pdfOpenFragment;
let div = document.createElement("div");
let iframe = document.createElement("iframe");
iframe.src = fullURL;
iframe.className = "pdfobject";
iframe.type = "application/pdf";
iframe.frameborder = "0";
iframe.allow = "fullscreen";
if(id){
iframe.id = id;
}
if(!omitInlineStyles){
div.style.cssText = "position: absolute; top: 0; right: 0; bottom: 0; left: 0;";
iframe.style.cssText = "border: none; width: 100%; height: 100%;";
targetNode.style.position = "relative";
targetNode.style.overflow = "auto";
}
div.appendChild(iframe);
targetNode.appendChild(div);
targetNode.classList.add("pdfobject-container");
return targetNode.getElementsByTagName("iframe")[0];
};
let generatePDFObjectMarkup = function (embedType, targetNode, targetSelector, url, pdfOpenFragment, width, height, id, title, omitInlineStyles){
//Ensure target element is empty first
emptyNodeContents(targetNode);
let embed = document.createElement(embedType);
if ('object' === embedType ) {
embed.data = url + pdfOpenFragment;
}else{
embed.src = url + pdfOpenFragment;
}
embed.className = "pdfobject";
embed.type = "application/pdf";
embed.title = title;
if(id){
embed.id = id;
}
if(embedType === "iframe"){
embed.allow = "fullscreen";
}
if(!omitInlineStyles){
let style = (embedType === "embed") ? "overflow: auto;" : "border: none;";
if(targetSelector && targetSelector !== document.body){
style += "width: " + width + "; height: " + height + ";";
} else {
style += "position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%;";
}
embed.style.cssText = style;
}
targetNode.classList.add("pdfobject-container");
targetNode.appendChild(embed);
return targetNode.getElementsByTagName(embedType)[0];
};
let embed = function(url, targetSelector, options){
//If targetSelector is not defined, convert to boolean
let selector = targetSelector || false;
//Ensure options object is not undefined -- enables easier error checking below
let opt = options || {};
//Get passed options, or set reasonable defaults
let id = (typeof opt.id === "string") ? opt.id : "";
let page = opt.page || false;
let pdfOpenParams = opt.pdfOpenParams || {};
let fallbackLink = opt.fallbackLink || true;
let width = opt.width || "100%";
let height = opt.height || "100%";
let title = opt.title || "Embedded PDF";
let assumptionMode = (typeof opt.assumptionMode === "boolean") ? opt.assumptionMode : true;
let forcePDFJS = (typeof opt.forcePDFJS === "boolean") ? opt.forcePDFJS : false;
let supportRedirect = (typeof opt.supportRedirect === "boolean") ? opt.supportRedirect : false;
let omitInlineStyles = (typeof opt.omitInlineStyles === "boolean") ? opt.omitInlineStyles : false;
let suppressConsole = (typeof opt.suppressConsole === "boolean") ? opt.suppressConsole : false;
let forceIframe = (typeof opt.forceIframe === "boolean") ? opt.forceIframe : false;
let forceObject = (typeof opt.forceObject === "boolean") ? opt.forceObject : false;
let PDFJS_URL = opt.PDFJS_URL || false;
let targetNode = getTargetElement(selector);
let fallbackHTML = "";
let pdfOpenFragment = "";
let fallbackHTML_default = "This browser does not support inline PDFs. Please download the PDF to view it: Download PDF
";
//Ensure URL is available. If not, exit now.
if(typeof url !== "string"){ return embedError("URL is not valid", suppressConsole); }
//If target element is specified but is not valid, exit without doing anything
if(!targetNode){ return embedError("Target element cannot be determined", suppressConsole); }
//page option overrides pdfOpenParams, if found
if(page){ pdfOpenParams.page = page; }
//Stringify optional Adobe params for opening document (as fragment identifier)
pdfOpenFragment = buildURLFragmentString(pdfOpenParams);
// --== Do the dance: Embed attempt #1 ==--
//If the forcePDFJS option is invoked, skip everything else and embed as directed
if(forcePDFJS && PDFJS_URL){
return generatePDFJSMarkup(targetNode, url, pdfOpenFragment, PDFJS_URL, id, omitInlineStyles);
}
// --== Embed attempt #2 ==--
//Embed PDF if traditional support is provided, or if this developer is willing to roll with assumption
//that modern desktop (not mobile) browsers natively support PDFs
if(supportsPDFs || (assumptionMode && !isMobileDevice)){
//Should we use