vendor
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documents-viewer-script.js
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front.js
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pdfobject.js
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plyr.polyfilled.js
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preview.js
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ytiframeapi.js
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pdfobject.js
357 lines
| 1 | /** |
| 2 | * PDFObject v2.2.6 |
| 3 | * https://github.com/pipwerks/PDFObject |
| 4 | * @license |
| 5 | * Copyright (c) 2008-2021 Philip Hutchison |
| 6 | * MIT-style license: http://pipwerks.mit-license.org/ |
| 7 | * UMD module pattern from https://github.com/umdjs/umd/blob/master/templates/returnExports.js |
| 8 | */ |
| 9 | |
| 10 | (function (root, factory) { |
| 11 | if (typeof define === "function" && define.amd) { |
| 12 | // AMD. Register as an anonymous module. |
| 13 | define([], factory); |
| 14 | } else if (typeof module === "object" && module.exports) { |
| 15 | // Node. Does not work with strict CommonJS, but |
| 16 | // only CommonJS-like environments that support module.exports, |
| 17 | // like Node. |
| 18 | module.exports = factory(); |
| 19 | } else { |
| 20 | // Browser globals (root is window) |
| 21 | root.PDFObject = factory(); |
| 22 | } |
| 23 | }(this, function () { |
| 24 | |
| 25 | "use strict"; |
| 26 | |
| 27 | //PDFObject is designed for client-side (browsers), not server-side (node) |
| 28 | //Will choke on undefined navigator and window vars when run on server |
| 29 | //Return boolean false and exit function when running server-side |
| 30 | |
| 31 | if( typeof window === "undefined" || |
| 32 | window.navigator === undefined || |
| 33 | window.navigator.userAgent === undefined || |
| 34 | window.navigator.mimeTypes === undefined){ |
| 35 | return false; |
| 36 | } |
| 37 | |
| 38 | let pdfobjectversion = "2.2.6"; |
| 39 | let nav = window.navigator; |
| 40 | let ua = window.navigator.userAgent; |
| 41 | |
| 42 | //Time to jump through hoops -- browser vendors do not make it easy to detect PDF support. |
| 43 | |
| 44 | /* |
| 45 | IE11 still uses ActiveX for Adobe Reader, but IE 11 doesn't expose window.ActiveXObject the same way |
| 46 | previous versions of IE did. window.ActiveXObject will evaluate to false in IE 11, but "ActiveXObject" |
| 47 | in window evaluates to true. |
| 48 | |
| 49 | MS Edge does not support ActiveX so this test will evaluate false |
| 50 | */ |
| 51 | let isIE = ("ActiveXObject" in window); |
| 52 | |
| 53 | /* |
| 54 | There is a coincidental correlation between implementation of window.promises and native PDF support in desktop browsers |
| 55 | We use this to assume if the browser supports promises it supports embedded PDFs |
| 56 | Is this fragile? Sort of. But browser vendors removed mimetype detection, so we're left to improvise |
| 57 | */ |
| 58 | let isModernBrowser = (window.Promise !== undefined); |
| 59 | |
| 60 | //Older browsers still expose the mimeType |
| 61 | let supportsPdfMimeType = (nav.mimeTypes["application/pdf"] !== undefined); |
| 62 | |
| 63 | //Safari on iPadOS doesn't report as 'mobile' when requesting desktop site, yet still fails to embed PDFs |
| 64 | let isSafariIOSDesktopMode = ( nav.platform !== undefined && |
| 65 | nav.platform === "MacIntel" && |
| 66 | nav.maxTouchPoints !== undefined && |
| 67 | nav.maxTouchPoints > 1 ); |
| 68 | |
| 69 | //Quick test for mobile devices. |
| 70 | let isMobileDevice = (isSafariIOSDesktopMode || /Mobi|Tablet|Android|iPad|iPhone/.test(ua)); |
| 71 | |
| 72 | //Safari desktop requires special handling |
| 73 | let isSafariDesktop = ( !isMobileDevice && |
| 74 | nav.vendor !== undefined && |
| 75 | /Apple/.test(nav.vendor) && |
| 76 | /Safari/.test(ua) ); |
| 77 | |
| 78 | //Firefox started shipping PDF.js in Firefox 19. If this is Firefox 19 or greater, assume PDF.js is available |
| 79 | let isFirefoxWithPDFJS = (!isMobileDevice && /irefox/.test(ua) && ua.split("rv:").length > 1) ? (parseInt(ua.split("rv:")[1].split(".")[0], 10) > 18) : false; |
| 80 | |
| 81 | |
| 82 | /* ---------------------------------------------------- |
| 83 | Supporting functions |
| 84 | ---------------------------------------------------- */ |
| 85 | |
| 86 | let createAXO = function (type){ |
| 87 | var ax; |
| 88 | try { |
| 89 | ax = new ActiveXObject(type); |
| 90 | } catch (e) { |
| 91 | ax = null; //ensure ax remains null |
| 92 | } |
| 93 | return ax; |
| 94 | }; |
| 95 | |
| 96 | //If either ActiveX support for "AcroPDF.PDF" or "PDF.PdfCtrl" are found, return true |
| 97 | //Constructed as a method (not a prop) to avoid unneccesarry overhead -- will only be evaluated if needed |
| 98 | let supportsPdfActiveX = function (){ return !!(createAXO("AcroPDF.PDF") || createAXO("PDF.PdfCtrl")); }; |
| 99 | |
| 100 | //Determines whether PDF support is available |
| 101 | let supportsPDFs = ( |
| 102 | //As of Sept 2020 no mobile browsers properly support PDF embeds |
| 103 | !isMobileDevice && ( |
| 104 | //We're moving into the age of MIME-less browsers. They mostly all support PDF rendering without plugins. |
| 105 | isModernBrowser || |
| 106 | //Modern versions of Firefox come bundled with PDFJS |
| 107 | isFirefoxWithPDFJS || |
| 108 | //Browsers that still support the original MIME type check |
| 109 | supportsPdfMimeType || |
| 110 | //Pity the poor souls still using IE |
| 111 | (isIE && supportsPdfActiveX()) |
| 112 | ) |
| 113 | ); |
| 114 | |
| 115 | //Create a fragment identifier for using PDF Open parameters when embedding PDF |
| 116 | let buildURLFragmentString = function(pdfParams){ |
| 117 | |
| 118 | let string = ""; |
| 119 | let prop; |
| 120 | |
| 121 | if(pdfParams){ |
| 122 | |
| 123 | for (prop in pdfParams) { |
| 124 | if (pdfParams.hasOwnProperty(prop)) { |
| 125 | string += encodeURIComponent(prop) + "=" + encodeURIComponent(pdfParams[prop]) + "&"; |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | //The string will be empty if no PDF Params found |
| 130 | if(string){ |
| 131 | |
| 132 | string = "#" + string; |
| 133 | |
| 134 | //Remove last ampersand |
| 135 | string = string.slice(0, string.length - 1); |
| 136 | |
| 137 | } |
| 138 | |
| 139 | } |
| 140 | |
| 141 | return string; |
| 142 | |
| 143 | }; |
| 144 | |
| 145 | let embedError = function (msg, suppressConsole){ |
| 146 | if(!suppressConsole){ |
| 147 | // console.log("[PDFObject] " + msg); //added by EP developer |
| 148 | } |
| 149 | return false; |
| 150 | }; |
| 151 | |
| 152 | let emptyNodeContents = function (node){ |
| 153 | while(node.firstChild){ |
| 154 | node.removeChild(node.firstChild); |
| 155 | } |
| 156 | }; |
| 157 | |
| 158 | let getTargetElement = function (targetSelector){ |
| 159 | |
| 160 | //Default to body for full-browser PDF |
| 161 | let targetNode = document.body; |
| 162 | |
| 163 | //If a targetSelector is specified, check to see whether |
| 164 | //it's passing a selector, jQuery object, or an HTML element |
| 165 | |
| 166 | if(typeof targetSelector === "string"){ |
| 167 | |
| 168 | //Is CSS selector |
| 169 | targetNode = document.querySelector(targetSelector); |
| 170 | |
| 171 | } else if (window.jQuery !== undefined && targetSelector instanceof jQuery && targetSelector.length) { |
| 172 | |
| 173 | //Is jQuery element. Extract HTML node |
| 174 | targetNode = targetSelector.get(0); |
| 175 | |
| 176 | } else if (targetSelector.nodeType !== undefined && targetSelector.nodeType === 1){ |
| 177 | |
| 178 | //Is HTML element |
| 179 | targetNode = targetSelector; |
| 180 | |
| 181 | } |
| 182 | |
| 183 | return targetNode; |
| 184 | |
| 185 | }; |
| 186 | |
| 187 | let generatePDFJSMarkup = function (targetNode, url, pdfOpenFragment, PDFJS_URL, id, omitInlineStyles){ |
| 188 | |
| 189 | //Ensure target element is empty first |
| 190 | emptyNodeContents(targetNode); |
| 191 | |
| 192 | let fullURL = PDFJS_URL + "?file=" + encodeURIComponent(url) + pdfOpenFragment; |
| 193 | let div = document.createElement("div"); |
| 194 | let iframe = document.createElement("iframe"); |
| 195 | |
| 196 | iframe.src = fullURL; |
| 197 | iframe.className = "pdfobject"; |
| 198 | iframe.type = "application/pdf"; |
| 199 | iframe.frameborder = "0"; |
| 200 | iframe.allow = "fullscreen"; |
| 201 | |
| 202 | if(id){ |
| 203 | iframe.id = id; |
| 204 | } |
| 205 | |
| 206 | if(!omitInlineStyles){ |
| 207 | div.style.cssText = "position: absolute; top: 0; right: 0; bottom: 0; left: 0;"; |
| 208 | iframe.style.cssText = "border: none; width: 100%; height: 100%;"; |
| 209 | targetNode.style.position = "relative"; |
| 210 | targetNode.style.overflow = "auto"; |
| 211 | } |
| 212 | |
| 213 | div.appendChild(iframe); |
| 214 | targetNode.appendChild(div); |
| 215 | targetNode.classList.add("pdfobject-container"); |
| 216 | |
| 217 | return targetNode.getElementsByTagName("iframe")[0]; |
| 218 | |
| 219 | }; |
| 220 | |
| 221 | let generatePDFObjectMarkup = function (embedType, targetNode, targetSelector, url, pdfOpenFragment, width, height, id, title, omitInlineStyles){ |
| 222 | |
| 223 | //Ensure target element is empty first |
| 224 | emptyNodeContents(targetNode); |
| 225 | |
| 226 | let embed = document.createElement(embedType); |
| 227 | if ('object' === embedType ) { |
| 228 | embed.data = url + pdfOpenFragment; |
| 229 | }else{ |
| 230 | embed.src = url + pdfOpenFragment; |
| 231 | } |
| 232 | embed.className = "pdfobject"; |
| 233 | embed.type = "application/pdf"; |
| 234 | embed.title = title; |
| 235 | |
| 236 | if(id){ |
| 237 | embed.id = id; |
| 238 | } |
| 239 | |
| 240 | if(embedType === "iframe"){ |
| 241 | embed.allow = "fullscreen"; |
| 242 | } |
| 243 | |
| 244 | if(!omitInlineStyles){ |
| 245 | |
| 246 | let style = (embedType === "embed") ? "overflow: auto;" : "border: none;"; |
| 247 | |
| 248 | if(targetSelector && targetSelector !== document.body){ |
| 249 | style += "width: " + width + "; height: " + height + ";"; |
| 250 | } else { |
| 251 | style += "position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%;"; |
| 252 | } |
| 253 | |
| 254 | embed.style.cssText = style; |
| 255 | |
| 256 | } |
| 257 | |
| 258 | targetNode.classList.add("pdfobject-container"); |
| 259 | targetNode.appendChild(embed); |
| 260 | |
| 261 | return targetNode.getElementsByTagName(embedType)[0]; |
| 262 | |
| 263 | }; |
| 264 | |
| 265 | let embed = function(url, targetSelector, options){ |
| 266 | |
| 267 | //If targetSelector is not defined, convert to boolean |
| 268 | let selector = targetSelector || false; |
| 269 | |
| 270 | //Ensure options object is not undefined -- enables easier error checking below |
| 271 | let opt = options || {}; |
| 272 | |
| 273 | //Get passed options, or set reasonable defaults |
| 274 | let id = (typeof opt.id === "string") ? opt.id : ""; |
| 275 | let page = opt.page || false; |
| 276 | let pdfOpenParams = opt.pdfOpenParams || {}; |
| 277 | let fallbackLink = opt.fallbackLink || true; |
| 278 | let width = opt.width || "100%"; |
| 279 | let height = opt.height || "100%"; |
| 280 | let title = opt.title || "Embedded PDF"; |
| 281 | let assumptionMode = (typeof opt.assumptionMode === "boolean") ? opt.assumptionMode : true; |
| 282 | let forcePDFJS = (typeof opt.forcePDFJS === "boolean") ? opt.forcePDFJS : false; |
| 283 | let supportRedirect = (typeof opt.supportRedirect === "boolean") ? opt.supportRedirect : false; |
| 284 | let omitInlineStyles = (typeof opt.omitInlineStyles === "boolean") ? opt.omitInlineStyles : false; |
| 285 | let suppressConsole = (typeof opt.suppressConsole === "boolean") ? opt.suppressConsole : false; |
| 286 | let forceIframe = (typeof opt.forceIframe === "boolean") ? opt.forceIframe : false; |
| 287 | let forceObject = (typeof opt.forceObject === "boolean") ? opt.forceObject : false; |
| 288 | let PDFJS_URL = opt.PDFJS_URL || false; |
| 289 | let targetNode = getTargetElement(selector); |
| 290 | let fallbackHTML = ""; |
| 291 | let pdfOpenFragment = ""; |
| 292 | let fallbackHTML_default = "<p>This browser does not support inline PDFs. Please download the PDF to view it: <a href='[url]'>Download PDF</a></p>"; |
| 293 | |
| 294 | //Ensure URL is available. If not, exit now. |
| 295 | if(typeof url !== "string"){ return embedError("URL is not valid", suppressConsole); } |
| 296 | |
| 297 | //If target element is specified but is not valid, exit without doing anything |
| 298 | if(!targetNode){ return embedError("Target element cannot be determined", suppressConsole); } |
| 299 | |
| 300 | //page option overrides pdfOpenParams, if found |
| 301 | if(page){ pdfOpenParams.page = page; } |
| 302 | |
| 303 | //Stringify optional Adobe params for opening document (as fragment identifier) |
| 304 | pdfOpenFragment = buildURLFragmentString(pdfOpenParams); |
| 305 | |
| 306 | |
| 307 | // --== Do the dance: Embed attempt #1 ==-- |
| 308 | |
| 309 | //If the forcePDFJS option is invoked, skip everything else and embed as directed |
| 310 | if(forcePDFJS && PDFJS_URL){ |
| 311 | return generatePDFJSMarkup(targetNode, url, pdfOpenFragment, PDFJS_URL, id, omitInlineStyles); |
| 312 | } |
| 313 | |
| 314 | // --== Embed attempt #2 ==-- |
| 315 | |
| 316 | //Embed PDF if traditional support is provided, or if this developer is willing to roll with assumption |
| 317 | //that modern desktop (not mobile) browsers natively support PDFs |
| 318 | if(supportsPDFs || (assumptionMode && !isMobileDevice)){ |
| 319 | |
| 320 | //Should we use <embed> or <iframe>? In most cases <embed>. |
| 321 | //Allow developer to force <iframe>, if desired |
| 322 | //There is an edge case where Safari does not respect 302 redirect requests for PDF files when using <embed> element. |
| 323 | //Redirect appears to work fine when using <iframe> instead of <embed> (Addresses issue #210) |
| 324 | //Forcing Safari desktop to use iframe due to freezing bug in macOS 11 (Big Sur) |
| 325 | let embedtype = (forceIframe || supportRedirect || isSafariDesktop) ? "iframe" : (forceObject ? "object" : "embed"); |
| 326 | return generatePDFObjectMarkup(embedtype, targetNode, targetSelector, url, pdfOpenFragment, width, height, id, title, omitInlineStyles); |
| 327 | |
| 328 | } |
| 329 | |
| 330 | // --== Embed attempt #3 ==-- |
| 331 | |
| 332 | //If everything else has failed and a PDFJS fallback is provided, try to use it |
| 333 | if(PDFJS_URL){ |
| 334 | return generatePDFJSMarkup(targetNode, url, pdfOpenFragment, PDFJS_URL, id, omitInlineStyles); |
| 335 | } |
| 336 | |
| 337 | // --== PDF embed not supported! Use fallback ==-- |
| 338 | |
| 339 | //Display the fallback link if available |
| 340 | if(fallbackLink){ |
| 341 | |
| 342 | fallbackHTML = (typeof fallbackLink === "string") ? fallbackLink : fallbackHTML_default; |
| 343 | targetNode.innerHTML = fallbackHTML.replace(/\[url\]/g, url); |
| 344 | |
| 345 | } |
| 346 | |
| 347 | return embedError("This browser does not support embedded PDFs", suppressConsole); |
| 348 | |
| 349 | }; |
| 350 | |
| 351 | return { |
| 352 | embed: function (a,b,c){ return embed(a,b,c); }, |
| 353 | pdfobjectversion: (function () { return pdfobjectversion; })(), |
| 354 | supportsPDFs: (function (){ return supportsPDFs; })() |
| 355 | }; |
| 356 | |
| 357 | })); |