Form-associated custom elements

[calebdwilliams]

Request for position on form-associated custom elements

• WebKittens who can provide input:
• @rniwa
• @annevk

Information about the spec

• Spec Title: Form-associated custom elements
• Spec URL: https://html.spec.whatwg.org/multipage/custom-elements.html#custom-elements-face-example
• GitHub repository: https://github.com/whatwg/html/issues

Design reviews and vendor positions

• Chromium and Mozilla have full implementation

Bugs tracking this feature

• WebKit Bugzilla: https://bugs.webkit.org/show_bug.cgi?id=197963

Anything else we need to know

APIs using for allowing custom elements to participate in form submission and constraint validation. Chromium and Mozilla have shipped this feature and WebKit has begun implementing ElementInternals; however, WebKit's implementation currently lacks the form-associated APIs.

[rniwa]

This is under development.

[bennypowers]

I believe I found a bug in both chrome and firefox' implementations, namely that a FACE in a fieldset should have it's formDisabledCallback called when disabled attr is removed from the fieldset so please bear that in mind when working on the webkit implementation.

UPDATE: Mozilla and Chrome both closed as WONTFIX, but I believe this is still a problem, so I filed a spec bug

[othermaciej]

Does anyone happen to know who originally proposed form-associate custom elements (so I can give due credit with a from: label)?

[annevk]

(Added in whatwg/html#4383 by tkent from Google referencing WICG/webcomponents#187 by Hayato Ito (also Google) which was a continuation of https://www.w3.org/Bugs/Public/show_bug.cgi?id=24603 filed by Erik Arvidsson in 2014 (strongly suspect still at Google back then).)

[hober]

Closing as we've identified our position.