| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSS Pseudo-Elements Test: highlight cascade: inheritance of custom properties</title> |
| <link rel="author" title="Stephen Chenney" href="mailto:[email protected]"> |
| <link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#highlight-cascade"> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/6641"> |
| <meta name="assert" content="This test verifies that non-applicable property declarations are ignored in highlight pseudos, that the computed values of ‘font-size’ and ‘line-height’ in highlight pseudos are taken from the originating element, and that ‘text-shadow’ in highlight pseudos respects these values when given ‘em’ and ‘lh’ units."> |
| <script src="support/selections.js"></script> |
| <link rel="stylesheet" href="support/highlights.css"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| :root { |
| --background-color: green; |
| --decoration-color: purple; |
| } |
| ::selection { |
| --decoration-color: green; |
| } |
| div::selection { |
| --background-color: blue; |
| background-color: var(--background-color, red); |
| } |
| </style> |
| <body> |
| <div>Some text</div> |
| </body> |
| <script> |
| selectNodeContents(document.querySelector("body")); |
| |
| const body_selection = getComputedStyle(document.querySelector("body"), "::selection"); |
| const div_selection = getComputedStyle(document.querySelector("div"), "::selection"); |
| test(() => void assert_equals(body_selection.getPropertyValue("--background-color"), "green"), |
| "body ::selection has the root custom property"); |
| test(() => void assert_equals(body_selection.getPropertyValue("--decoration-color"), "green"), |
| "body ::selection uses it's own custom property"); |
| test(() => void assert_equals(div_selection.getPropertyValue("--decoration-color"), "green"), |
| "div::selection inherits a custom property"); |
| test(() => void assert_equals(div_selection.getPropertyValue("--background-color"), "blue"), |
| "div::selection uses it's own custom property"); |
| </script> |
