83 lines
3.1 KiB
JavaScript
83 lines
3.1 KiB
JavaScript
//browser-update.org notification script, <browser-update.org>
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//Copyright (c) 2007-2009, MIT Style License <browser-update.org/LICENSE.txt>
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/* eslint-disable no-var */
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(function () {
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var $buo = function () {
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// Sometimes we have to resort to parsing the user agent string. :(
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if (navigator && navigator.userAgent) {
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var ua = navigator.userAgent;
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// we don't ask Googlebot to update their browser
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if (
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ua.indexOf("Googlebot") >= 0 ||
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ua.indexOf("Mediapartners") >= 0 ||
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ua.indexOf("AdsBot") >= 0
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) {
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return;
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}
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}
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if (!window.unsupportedBrowser) {
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return;
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}
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document.getElementsByTagName("body")[0].className += " crawler";
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var mainElement = document.getElementById("main");
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var noscriptElements = document.getElementsByTagName("noscript");
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// find the element with the "data-path" attribute set
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for (var i = 0; i < noscriptElements.length; ++i) {
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if (noscriptElements[i].getAttribute("data-path")) {
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// noscriptElements[i].innerHTML contains encoded HTML, so we need to access
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// the childNodes instead. Browsers seem to split very long content into multiple
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// text childNodes.
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var result = "";
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for (var j = 0; j < noscriptElements[i].childNodes.length; j++) {
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result += noscriptElements[i].childNodes[j].nodeValue;
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}
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mainElement.outerHTML = result;
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break;
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}
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}
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// retrieve localized browser upgrade text
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var t = I18n.t("browser_update"); // eslint-disable-line no-undef
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if (t.indexOf(".browser_update]") !== -1) {
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// very old browsers might fail to load even translations
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t =
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'Unfortunately, <a href="https://www.discourse.org/faq/#browser">your browser is too old to work on this site</a>. Please <a href="https://browsehappy.com">upgrade your browser</a> to view rich content, log in and reply.';
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}
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// create the notification div HTML
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var div = document.createElement("div");
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div.className = "buorg";
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div.innerHTML = "<div>" + t + "</div>";
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// create the notification div stylesheet
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var sheet = document.createElement("style");
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var style =
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".buorg {position:absolute; z-index:111111; width:100%; top:0px; left:0px; background:#FDF2AB; text-align:left; font-family: sans-serif; color:#000; font-size: 14px;} .buorg div {padding: 8px;} .buorg a, .buorg a:visited {color:#E25600; text-decoration: underline;} @media print { .buorg { display: none !important; } }";
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// insert the div and stylesheet into the DOM
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document.body.appendChild(div); // put it last in the DOM so Googlebot doesn't include it in search excerpts
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document.getElementsByTagName("head")[0].appendChild(sheet);
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try {
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sheet.innerText = style;
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sheet.innerHTML = style;
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} catch (e) {
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try {
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sheet.styleSheet.cssText = style;
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} catch (ex) {
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return;
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}
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}
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// shift the body down to make room for our notification div
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document.body.style.marginTop = div.clientHeight + "px";
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};
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$bu = $buo(); // eslint-disable-line no-undef
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})(this);
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