highlight-cascade-011.html (1420B)
1 <!doctype html> 2 <meta charset="utf-8"> 3 <title>CSS Pseudo-Elements Test: highlight cascade: inheritance of custom properties</title> 4 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org"> 5 <link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#highlight-cascade"> 6 <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/6641"> 7 <meta name="assert" content="This test verifies that custom properties used in highlight pseudos are taken from the highlight and originating element."> 8 <script src="../support/selections.js"></script> 9 <link rel="stylesheet" href="../support/highlights.css"> 10 <script src="/resources/testharness.js"></script> 11 <script src="/resources/testharnessreport.js"></script> 12 <style> 13 :root::selection { 14 --background-color: red; 15 } 16 div::selection { 17 background-color: var(--background-color, green); 18 } 19 </style> 20 <body> 21 <div>Some text</div> 22 </body> 23 <script> 24 selectNodeContents(document.querySelector("body")); 25 26 const div_selection = getComputedStyle(document.querySelector("div"), "::selection"); 27 test(() => void assert_equals(div_selection.backgroundColor, "rgb(0, 128, 0)"), 28 "div::selection does not inherit custom properties from the highlight parent"); 29 test(() => void assert_equals(div_selection.getPropertyValue("--background-color"), ""), 30 "--background-color has no computed value on div::selection"); 31 </script>