RFR: 8042054: JTree.updateUI uses out-of-date item size information [v2]

[Sergey Bylokhov]

On Thu, 13 Nov 2025 05:22:40 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

>> `JTree.updateUI` calculate item sizes from the cell renderer, but it doesn't call `updateUI `on the cell renderer until afterwards. This leads to incorrect size calculation, which is observed when we switch from one L&F to another where it is seen that all tree items are slightly too cramped, with too little space between rows and text are abbreviated.
>> Fix is to ensure `JTree.updateUI` update the cell renderer before updating the UI. 
>> CI testing is ok..
>> 
>> Before fix
>> <img width="142" height="146" alt="image" src="https://github.com/user-attachments/assets/95d43e47-122a-4ca4-8a3f-f4bf5c1d3f43" />
>> 
>> After fix
>> <img width="145" height="125" alt="image" src="https://github.com/user-attachments/assets/068b5988-119c-4b99-be27-1ef5d52a28a2" />
>
> Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Test formatting

Ok lets see how it will work.

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Marked as reviewed by serb (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28258#pullrequestreview-3527675007