RFR: 8301302: Platform preferences API [v2]

[Scott Palmer]

On Tue, Jan 31, 2023 at 6:15 PM Andy Goryachev <angorya at openjdk.org> wrote:

> On Tue, 31 Jan 2023 23:04:50 GMT, Scott Palmer <swpalmer at openjdk.org>
> wrote:
>
> > Is it necessary for any application to know about "auto"?
>
> I actually don't know how the "auto" behaves.  From the description it
> seems the colors might actually change gradually throughout the day, thus
> making an enum useless and necessitating the use of the actual colors.
>

>From https://support.apple.com/en-ca/guide/mac-help/mchl52e1c2d2/mac

Auto just changes from light to dark based on the "Night Shift" setting,
which uses either a fixed schedule, or sunset.  It doesn't have any "in
between" modes. Though it does animate the transition of the colors over
1/2 second or so.

The point being that as far as making the application aware of the current
state, auto isn't needed.  As a preference for within the application
(force light or dark, or 'auto' = track the OS setting) it might be
useful.  I would only include it if the Theme proposal is also going to
dynamically track the OS preference and switch Themes for you.  It looks
like you have that covered by having the application bind to the Platform
Preferences value, in which case "auto" would be an application setting
rather than a JavaFX platform setting.

Scott
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