| <!DOCTYPE HTML> |
| <html> |
| |
| <head> |
| <meta charset="utf-8"> |
| <title>Changing content targetting :has-slotted through a single shadow root</title> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/pull/10586"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <script src="/resources/testdriver-actions.js"></script> |
| </head> |
| |
| <body> |
| |
| <div id="test"><template shadowrootmode="open"> |
| <slot></slot> |
| <p id="target">This text will be styled.</p> |
| <style> |
| p { |
| color: rgb(0 255 0); |
| } |
| slot:not(:has-slotted) + p { |
| color: rgb(0 0 255); |
| } |
| </style> |
| </template></div> |
| |
| <script> |
| const blue = 'rgb(0, 0, 255)'; |
| const green = 'rgb(0, 255, 0)'; |
| test(function (t) { |
| const test = document.getElementById('test'); |
| const target = test.shadowRoot.getElementById('target'); |
| t.add_cleanup(() => { test.innerHTML = '' }); |
| let styles = getComputedStyle(target); |
| assert_equals(styles.getPropertyValue('color'), blue); |
| }, "empty node is blue"); |
| |
| test(function (t) { |
| const test = document.getElementById('test'); |
| const target = test.shadowRoot.getElementById('target'); |
| test.innerHTML = ' '; |
| t.add_cleanup(() => { test.innerHTML = '' }); |
| styles = getComputedStyle(target); |
| assert_equals(styles.getPropertyValue('color'), green); |
| test.innerHTML = ''; |
| styles = getComputedStyle(target); |
| assert_equals(styles.getPropertyValue('color'), blue); |
| }, "setting innerHTML to whitespace invalidates and becomes green, then empty string becomes blue"); |
| |
| test(function (t) { |
| const test = document.getElementById('test'); |
| const target = test.shadowRoot.getElementById('target'); |
| test.replaceChildren(document.createElement('div')); |
| assert_equals(styles.getPropertyValue('color'), green); |
| test.replaceChildren(); |
| styles = getComputedStyle(target); |
| assert_equals(styles.getPropertyValue('color'), blue); |
| }, "calling replaceChildren invalidates and becomes green, emptying with replaceChildren becomes blue"); |
| |
| test(function (t) { |
| const test = document.getElementById('test'); |
| const target = test.shadowRoot.getElementById('target'); |
| const div = document.createElement('div'); |
| test.innerHTML = ''; |
| test.append(div); |
| t.add_cleanup(() => { test.innerHTML = '' }); |
| styles = getComputedStyle(target); |
| assert_equals(styles.getPropertyValue('color'), green); |
| }, "calling append invalidates and becomes green"); |
| |
| test(function (t) { |
| const test = document.getElementById('test'); |
| const target = test.shadowRoot.getElementById('target'); |
| const node = document.createTextNode(' '); |
| test.replaceChildren(node); |
| t.add_cleanup(() => { test.innerHTML = '' }); |
| styles = getComputedStyle(target); |
| assert_equals(styles.getPropertyValue('color'), green); |
| test.replaceChildren(); |
| styles = getComputedStyle(target); |
| assert_equals(styles.getPropertyValue('color'), blue); |
| }, "calling replaceChildren(textnode) invalidates and becomes green"); |
| </script> |
| </body> |
| |
| </html> |
