Hi, No, I do not believe WebKit supports ReflectOnly and this is not standard IDL either.
The way to do it in WebKit would be to use a regular DOMString attribute, as in the specification and implement this logic in the c++ getter for this attribute. See HTMLElement::dir() for an example. We could also consider adding support for something like ReflectOnly in our bindings generator considering that this seems to be used quite a bit in the HTML specification and it would decrease code complexity a little. I’d actually be in favor of that. -- Chris Dumez > On Jun 1, 2017, at 10:57 PM, Yoav Weiss <[email protected]> wrote: > > I'm working on the link preload feature and as part of that want to align it > to the spec from an IDL perspective. > The `as` attribute is defined <https://html.spec.whatwg.org/#attr-link-as> as > an "enumerated attribute", which reflects only a finite set of known values. > That is important for feature detection purposes, so that developers can know > which `as` values are supported by the implementation. > > In Blink this is done using `ReflectOnly > <https://chromium.googlesource.com/chromium/src/+/master/third_party/WebKit/Source/bindings/IDLExtendedAttributes.md#ReflectOnly_list_a>` > (pending CL <https://codereview.chromium.org/2903653005/>), and I'm > wondering what is the WebKit equivalent to implement attributes that are > limited to known values > <https://html.spec.whatwg.org/#limited-to-only-known-values>. > > Thanks! :) > Yoav > _______________________________________________ > webkit-dev mailing list > [email protected] > https://lists.webkit.org/mailman/listinfo/webkit-dev
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