| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSS Test: ::scroll-marker-group and ::after invalidation</title> |
| <link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-marker-group-pseudo"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| :root { |
| --after-background: red; |
| --scroll-marker-group-background: red; |
| } |
| |
| div { |
| scroll-marker-group: after; |
| } |
| |
| div>* { |
| background: green; |
| display: flex; |
| height: 20px; |
| width: 100px; |
| } |
| |
| div.before::before { |
| background: green; |
| content: ""; |
| display: flex; |
| height: 20px; |
| width: 100px; |
| } |
| |
| div.after::after { |
| background: var(--after-background); |
| content: ""; |
| display: flex; |
| height: 20px; |
| width: 100px; |
| } |
| |
| div.scroll-marker-group::scroll-marker-group { |
| background: var(--scroll-marker-group-background); |
| display: flex; |
| height: 20px; |
| width: 100px; |
| } |
| </style> |
| <p>Test passes if there is a <strong>filled green rectangle</strong>. |
| <div id="target"> |
| <li></li> |
| <li></li> |
| </div> |
| <script> |
| function assertPseudoElementProperty(originatingElement, pseudoType, width, height, backgroundColor) { |
| const pseudoStyle = getComputedStyle(originatingElement, pseudoType); |
| const pseudoWidth = pseudoStyle.getPropertyValue('width'); |
| const pseudoHeight = pseudoStyle.getPropertyValue('height'); |
| const pseudoBackgroundColor = pseudoStyle.getPropertyValue('background-color'); |
| assert_equals(width, pseudoWidth, pseudoType + " width should be " + width.toString() + " but was " + pseudoWidth.toString()); |
| assert_equals(height, pseudoHeight, pseudoType + " height should be " + height.toString() + " but was " + pseudoHeight.toString()); |
| assert_equals(backgroundColor, pseudoBackgroundColor, pseudoType + " background should be " + backgroundColor.toString() + " but was " + pseudoBackgroundColor.toString()); |
| } |
| document.documentElement.offsetTop; |
| target.className = "after"; |
| document.documentElement.offsetTop; |
| test(() => { |
| assertPseudoElementProperty(target, "::scroll-marker-group", "auto", "auto", "rgba(0, 0, 0, 0)"); |
| }, "::scroll-marker-group empty"); |
| target.className = "scroll-marker-group"; |
| document.documentElement.offsetTop; |
| test(() => { |
| assertPseudoElementProperty(target, "::scroll-marker-group", "100px", "20px", "rgb(255, 0, 0)"); |
| }, "::scroll-marker-group with red background"); |
| target.className = ""; |
| document.documentElement.offsetTop; |
| test(() => { |
| assertPseudoElementProperty(target, "::scroll-marker-group", "auto", "auto", "rgba(0, 0, 0, 0)"); |
| }, "::scroll-marker-group empty again"); |
| target.className = "after scroll-marker-group before"; |
| document.documentElement.offsetTop; |
| test(() => { |
| assertPseudoElementProperty(target, "::scroll-marker-group", "100px", "20px", "rgb(255, 0, 0)"); |
| }, "::scroll-marker-group with red background again"); |
| document.documentElement.offsetTop; |
| document.documentElement.style.setProperty('--after-background', 'green'); |
| document.documentElement.offsetTop; |
| document.documentElement.style.setProperty('--scroll-marker-group-background', 'green'); |
| document.documentElement.offsetTop; |
| test(() => { |
| assertPseudoElementProperty(target, "::scroll-marker-group", "100px", "20px", "rgb(0, 128, 0)"); |
| }, "::scroll-marker-group with green background"); |
| </script> |
