| <!doctype html> |
| <title><link disabled>, HTMLLinkElement.disabled and CSSStyleSheet.disabled interactions</title> |
| <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> |
| <link rel="author" title="Mozilla" href="https://mozilla.org"> |
| <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1281135"> |
| <link rel="help" href="https://github.com/whatwg/html/issues/3840"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link title="alt" rel="stylesheet" disabled href="data:text/css,html { background: green }"> |
| <script> |
| function assert_applies(applies) { |
| (applies ? assert_equals : assert_not_equals)(getComputedStyle(document.documentElement).backgroundColor, "rgb(0, 128, 0)"); |
| } |
| |
| const link = document.querySelector("link[disabled]"); |
| |
| test(function() { |
| assert_equals(document.styleSheets.length, 0); |
| assert_applies(false); |
| }, "<link disabled> prevents the stylesheet from being in document.styleSheets (from parser)"); |
| |
| async_test(function(t) { |
| assert_true(link.disabled); |
| |
| link.onload = t.step_func_done(function() { |
| assert_equals(document.styleSheets.length, 1); |
| let sheet = document.styleSheets[0]; |
| assert_equals(sheet.ownerNode, link); |
| assert_applies(true); |
| |
| link.disabled = true; |
| assert_equals(sheet.ownerNode, null); |
| assert_false(sheet.disabled); |
| assert_applies(false); |
| assert_true(link.hasAttribute("disabled")); |
| |
| assert_equals(document.styleSheets.length, 0); |
| assert_applies(false); |
| }); |
| |
| link.disabled = false; |
| assert_true(!link.hasAttribute("disabled")); |
| assert_false(link.disabled); |
| }, "HTMLLinkElement.disabled reflects the <link disabled> attribute, and behaves consistently"); |
| </script> |
