RFR: 8345188: Support tree-structural pseudo-classes [v9]

[Michael Strauß]

On Wed, 8 Jan 2025 23:00:34 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> Michael Strauß has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   updated cssref
>
> modules/javafx.graphics/src/main/docs/javafx/scene/doc-files/cssref.html line 2057:
> 
>> 2055:         </tr>
>> 2056:         <tr>
>> 2057:           <th class="propertyname" scope="row">nth-child()</th>
> 
> There is no "`nth-child()`" name, there are two: "`nth-child(odd)`" and "`nth-child(even)`".
> 
> I would recommend either to create two entries, or list two names separately.
> 
> Upd: or use the w3c-style declaration: `nth-child(odd | even)`

I've opted for `nth-child(even | odd)`.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1652#discussion_r1907985527