| <!DOCTYPE html> |
| <title>:is() inside shadow pseudos</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link rel="help" href="https://drafts.csswg.org/selectors-4/#matches"> |
| <link rel="help" href="https://drafts.csswg.org/css-scoping/#host-selector"> |
| <link rel="help" href="https://drafts.csswg.org/css-scoping/#slotted-pseudo"> |
| <div class="parent1"><div id="host1" class=a><p class=e>::slotted</p></div></div> |
| <div class="parent2"><div id="host2" class=b><p class=d>::slotted</p></div></div> |
| <div class="parent3"><div id="host3" class=c><p class=f>::slotted</p></div></div> |
| </div> |
| <script> |
| let shadow1 = host1.attachShadow({ mode: 'open' }); |
| let shadow2 = host2.attachShadow({ mode: 'open' }); |
| let shadow3 = host3.attachShadow({ mode: 'open' }); |
| |
| const html = ` |
| <style> |
| * { color: blue; } |
| :host(:is(.a, .b)) b { color: green; } |
| :host-context(:is(.parent1, .parent2)) i { color: green; } |
| ::slotted(:is(.e, .f)) { color: green; } |
| |
| /* The following should not match: */ |
| :host(:is(.z)) b { color: red; } |
| :host(:is(.a + .b)) b { color: red; } |
| :host-context(:is(.z)) i { color: red; } |
| :host-context(:is(.parent1 .parent2)) i { color: red; } |
| ::slotted(:is(.z)) { color: red; } |
| ::slotted(:is(.a > .b)) { color: red; } |
| </style> |
| <b>:host</b> |
| <i>:host-context</i> |
| <slot></slot> |
| `; |
| |
| shadow1.innerHTML = html; |
| shadow2.innerHTML = html; |
| shadow3.innerHTML = html; |
| |
| const getComputedColor = e => getComputedStyle(e).color; |
| const green = 'rgb(0, 128, 0)'; |
| const blue = 'rgb(0, 0, 255)'; |
| |
| test(function() { |
| assert_equals(getComputedColor(shadow1.querySelector('b')), green); |
| assert_equals(getComputedColor(shadow2.querySelector('b')), green); |
| assert_equals(getComputedColor(shadow3.querySelector('b')), blue); |
| }, ':is() inside :host()'); |
| |
| test(function() { |
| assert_equals(getComputedColor(shadow1.querySelector('i')), green); |
| assert_equals(getComputedColor(shadow2.querySelector('i')), green); |
| assert_equals(getComputedColor(shadow3.querySelector('i')), blue); |
| }, ':is() inside :host-context()'); |
| |
| test(function() { |
| assert_equals(getComputedColor(document.querySelector('.e')), green); |
| assert_equals(getComputedColor(document.querySelector('.d')), blue); |
| assert_equals(getComputedColor(document.querySelector('.f')), green); |
| }, ':is() inside ::slotted()'); |
| </script> |
