48 lines
2.2 KiB
JavaScript
48 lines
2.2 KiB
JavaScript
function compatTest() {
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var hasPromise = typeof Promise !== 'undefined';
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var hasWebSockets = typeof WebSocket !== 'undefined';
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var hasWebCrypto = window.crypto && typeof window.crypto.subtle !== 'undefined';
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var hasObjectFromEntries = typeof Object.fromEntries !== 'undefined';
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var hasResizeObserver = typeof window.ResizeObserver !== 'undefined';
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var hasCssSupports = window.CSS && typeof window.CSS.supports === 'function';
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var hasIntl = typeof window.Intl !== 'undefined';
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var hasDisplayNames = hasIntl && typeof Intl.DisplayNames !== 'undefined';
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var isCompatible = hasPromise && hasWebSockets && hasWebCrypto && hasObjectFromEntries && hasResizeObserver
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&& hasCssSupports && hasDisplayNames;
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if (isCompatible || (window.localStorage && window.localStorage.getItem('tt-ignore-compat'))) {
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window.isCompatTestPassed = true;
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return;
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}
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if (window.console && console.warn) {
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console.warn('Compatibility test report:');
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console.warn('Promise', hasPromise);
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console.warn('WebSocket', hasWebSockets);
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console.warn('WebCrypto', hasWebCrypto);
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console.warn('Object.fromEntries', hasObjectFromEntries);
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console.warn('ResizeObserver', hasResizeObserver);
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console.warn('CSS.supports', hasCssSupports);
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console.warn('Intl.DisplayNames', hasDisplayNames);
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}
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// Hardcoded page because server forbids iframe embedding
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document.title = 'Unsupported Browser';
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document.body.setAttribute('style', 'height: 100%; margin: 0; font-family: Arial, Helvetica, sans-serif;');
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document.body.innerHTML = '<table style="width:100%;height:100%;border-collapse:collapse"><tr><td style="vertical-align:middle;text-align:center"><div style="display:inline-block"><img src=./unsupported.png><h3>Your browser is not supported</h3><p>Please, update it or use our <a href="http://telegram.org/dl" target="_blank">native clients</a>.</p><a id="ignore" href="#">I\'m Feeling Lucky</a></div></table>';
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if (!window.ignore) return;
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if (!window.ignore.addEventListener) {
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window.ignore.style.display = 'none';
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return;
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}
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window.ignore.addEventListener('click', function() {
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window.localStorage.setItem('tt-ignore-compat', '1');
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window.location.reload();
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});
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}
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compatTest();
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