RFR: 8370140: RichTextArea: line endings [v14]

[Kevin Rushforth]

On Thu, 6 Nov 2025 21:29:54 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> Adds control of line endings (newline separators) in `StyledTextModel`, `RichTextArea`, and `CodeArea`.
>> 
>> The impacted areas are:
>> - saving to plain text
>> - copying to plain text
>> - IME
>> 
>> This feature is implemented as a regular field in the `StyledTextModel` (since it is ultimately an attribute of the model), with convenience setter and getter in the `RichTextArea`.
>> 
>> ### NOTES
>> 
>> - some dependency on #1938 , resolved.
>
> Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   rm property

Marked as reviewed by kcr (Lead).

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PR Review: https://git.openjdk.org/jfx/pull/1944#pullrequestreview-3430812450