Implement <link disabled>

[CYBAI]

Spec: whatwg/html#4519
WPT: web-platform-tests/wpt#22645

[ghostd]

Hi

@jdm @CYBAI i started working on this. I added the code to handle the new "explicit enabled" property. But i dont understand what should i do to modofy the stylesheet list. As you can see into the tests, the document.styleSheets and the stylesheet owner node change according to the mutation of the "disabled" attribute.

servo/tests/wpt/web-platform-tests/css/cssom/HTMLLinkElement-disabled-001.html

Lines 25 to 36 in 28cbee5

	assert_equals(document.styleSheets.length, 1);
	let sheet = document.styleSheets[0];
	assert_equals(sheet.ownerNode, link);
	assert_applies(true);
	link.disabled = true;
	assert_equals(sheet.ownerNode, null);
	assert_false(sheet.disabled);
	assert_applies(false);
	assert_true(link.hasAttribute("disabled"));
	assert_equals(document.styleSheets.length, 0);

Any ideas?

[CYBAI]

@ghostd For ownerNode, there's an open issue at #23082 which had an almost done PR.

I guess the related spec of styleSheet removal and setting ownerNode to null is in remove a CSS style sheet in CSS spec.

However, I'm not clear is how setting the explicit enabled will trigger the stylesheet removal in the spec update for this issue.

@emilio could you help to point out the related spec here 👀?

@ghostd so, maybe it's good for you to work on that ownerNode issue and then get back to this one so that ownerNode property can work fine with that one done!