| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSSOM: getComputedStyle gets invalidated for display: none elements (inheritance)</title> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#dom-window-getcomputedstyle"> |
| <link rel="help" href="https://bugs.webkit.org/show_bug.cgi?id=186882"> |
| <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <style> |
| #undisplayed, #host { |
| display: none; |
| color: red; |
| } |
| </style> |
| <div id="undisplayed"><div id="child"></div></div> |
| <div id="host"></div> |
| <script> |
| test(function() { |
| let undisplayed_style = getComputedStyle(undisplayed); |
| let undisplayed_child_style = getComputedStyle(child); |
| assert_equals(undisplayed_style.color, "rgb(255, 0, 0)"); |
| assert_equals(undisplayed_child_style.color, "rgb(255, 0, 0)"); |
| undisplayed.style.color = "green"; |
| assert_equals(undisplayed_style.color, "rgb(0, 128, 0)"); |
| assert_equals(undisplayed_child_style.color, "rgb(0, 128, 0)"); |
| }, "getComputedStyle gets invalidated in display: none subtrees due to inherited changes to an ancestor"); |
| test(function() { |
| host.attachShadow({ mode: 'open' }).innerHTML = ` |
| <div></div> |
| `; |
| let host_style = getComputedStyle(host); |
| let shadow_style = getComputedStyle(host.shadowRoot.firstElementChild); |
| assert_equals(host_style.color, "rgb(255, 0, 0)"); |
| assert_equals(shadow_style.color, "rgb(255, 0, 0)"); |
| host.style.color = "green"; |
| assert_equals(host_style.color, "rgb(0, 128, 0)"); |
| assert_equals(shadow_style.color, "rgb(0, 128, 0)"); |
| }, "getComputedStyle gets invalidated in display: none subtrees due to inherited changes to an ancestor shadow host"); |
| </script> |
