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683b172104
These were originally very similar, but have diverged over time. This makes it very difficult to manage styling. This commit moves the noscript header and footer into partials so they can be reused in both the crawler view and the `<noscript>` view. It also makes browser-update render the noscript content **instead of** the `<section id='main'>`, rather than adding adding the noscript inside the `<section>`. This provides better parity with the server-rendered crawler view.
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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