49 lines
1.9 KiB
JavaScript
49 lines
1.9 KiB
JavaScript
function maybeAddWarning () {
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// DOCUMENTER_NEWEST is defined in versions.js, DOCUMENTER_CURRENT_VERSION and DOCUMENTER_STABLE
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// in siteinfo.js.
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// If either of these are undefined something went horribly wrong, so we abort.
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if (
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window.DOCUMENTER_NEWEST === undefined ||
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window.DOCUMENTER_CURRENT_VERSION === undefined ||
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window.DOCUMENTER_STABLE === undefined
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) {
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return
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};
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// Current version is not a version number, so we can't tell if it's the newest version. Abort.
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if (!/v(\d+\.)*\d+/.test(window.DOCUMENTER_CURRENT_VERSION)) {
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return
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};
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// Current version is newest version, so no need to add a warning.
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if (window.DOCUMENTER_NEWEST === window.DOCUMENTER_CURRENT_VERSION) {
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return
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};
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// Add a noindex meta tag (unless one exists) so that search engines don't index this version of the docs.
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if (document.body.querySelector('meta[name="robots"]') === null) {
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const meta = document.createElement('meta');
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meta.name = 'robots';
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meta.content = 'noindex';
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document.getElementsByTagName('head')[0].appendChild(meta);
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};
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const div = document.createElement('div');
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div.classList.add('outdated-warning-overlay');
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const closer = document.createElement('button');
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closer.classList.add('outdated-warning-closer', 'delete');
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closer.addEventListener('click', function () {
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document.body.removeChild(div);
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});
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const href = window.documenterBaseURL + '/../' + window.DOCUMENTER_STABLE;
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div.innerHTML = 'This documentation is not for the latest version. <br> <a href="' + href + '">Go to the latest documentation</a>.';
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div.appendChild(closer);
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document.body.appendChild(div);
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};
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', maybeAddWarning);
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} else {
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maybeAddWarning();
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};
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