invalidation-change-part-name-idl-setter.html (1350B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <title>CSS Shadow Parts - Invalidation Change Part Name IDL Setter</title> 5 <meta href="mailto:fergal@chromium.org" rel="author" title="Fergal Daly"> 6 <link href="http://www.google.com/" rel="author" title="Google"> 7 <link href="https://drafts.csswg.org/css-shadow-parts/" rel="help"> 8 <script src="/resources/testharness.js"></script> 9 <script src="/resources/testharnessreport.js"></script> 10 <script src="support/shadow-helper.js"></script> 11 </head> 12 <body> 13 <style>#c-e::part(partp) { color: red; }</style> 14 <style>#c-e::part(new-partp) { color: green; }</style> 15 <script>installCustomElement("custom-element", "custom-element-template");</script> 16 <template id="custom-element-template"> 17 <style>span { color: blue; }</style> 18 <span id="part" part="partp">This text</span> 19 </template> 20 The following text should be green: 21 <div><custom-element id="c-e"></custom-element></div> 22 <script> 23 "use strict"; 24 const colorGreen = "rgb(0, 128, 0)"; 25 test(function() { 26 const el = getElementByShadowIds(document, ["c-e", "part"]); 27 el.part = "new-partp" 28 assert_equals(window.getComputedStyle(el).color, colorGreen); 29 }, "Part in selected host changed color via part IDL attribute setter."); 30 </script> 31 </body> 32 </html>