[webkit-dev] Adding ENABLE_CSS_DIRECTIONAL_FOCUS to WebCore.

Benjamin Poulain benjamin at webkit.org
Tue Jul 23 15:48:13 PDT 2013


On Mon, Jul 22, 2013 at 11:17 PM, Kyounga Ra <kyounga.ra at gmail.com> wrote:

> I'd like to add new feature for CSS nav-[dir] properties.
> https://bugs.webkit.org/show_bug.cgi?id=66027
> This feature is for
> http://dev.w3.org/csswg/css3-ui/#nav-dir
> On recent discussion, these nav-* properties was dropped from level 3.
> http://lists.w3.org/Archives/Public/www-style/2013Apr/0428.html
> But, I need this feature. (I'm in the TV industry.)
> Honestly, already implemented and have used it.
> You can see my previous patch.
> At that time, I thought that this is W3C standard and we didn't need to
> develop it behind a defined feature name.
> Now, this property was dropped from CSS.
> So, is it okay implementing this feature behind
> I re-ported this feature  whenever I rebase my webkit.
> It's troublesome job.
> how about you

Adding new features has a big cost on the project, that is not the kind of
thing we do lightly.

Feature flags are there to allow ports to disable a feature before shipping
a product. For example, if Apple decide adds a feature and GTK decides it
is not ready for shipping, the feature can be disabled for releasing of
WebKitGTK. Feature flags are not not a free pass to add code that is not
shipped by any port.

The important questions to add CSS-nav are:
-Which browsers are shipping the feature?
-Which browsers are planning to ship the feature?
-Is it a mature standard (or an amazing feature) that one of the WebKit
ports wants to maintain?

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