RFR: 4765299: componentResized() not always called with nested JSplitPanes [v2]

[Alexander Zuev]

On Mon, 12 Jan 2026 11:55:42 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

>> If a component "comp" be nested inside a "inner" JSplitPane with VERTICAL_SPLIT mode and if then "inner" be nested inside a
>> "outer" JSplitPane with HORIZONTAL_SPLIT mode and a component listener is added to "comp"
>> then with this setup, componentResized() on the listener is called ONLY when the divider of "outer" is moved manually
>> however, it is not called when the divider of "outer" is moved using "One touch expandable" left button at the top of the divider.
>> 
>> This is because the `layoutContainer` bails out if the width or height is 0 which logically should be to bail out if both width and height is 0 and when "One touch expandable" left button is pressed, width becomes 0 so `layoutContainer` bails out without sending the event.
>> 
>> With this fix, componentResized is called
>> 
>> No regression is observed in CI.
>
> Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   test fix

Latest version looks fine.

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Marked as reviewed by kizune (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/29063#pullrequestreview-3652985926