RFR: 8368478: RichTextArea: add IME support

[Andy Goryachev]

On Wed, 29 Oct 2025 12:55:57 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> Adds Input Method Editor (IME) support to `RichTextArea`/`CodeArea`.
>> 
>> Tested on macOS and Windows 11 with Japanese and Chinese (pinyin) input methods.
>> Please test this on Linux, even though there is no platform-specific code in this PR (should work the same way it does in `TextArea`/`TextField`)
>> 
>> For testing, one can use the updated Monkey Tester
>> https://github.com/andy-goryachev-oracle/MonkeyTest
>> (optionally enable IME events in stdout with Logging -> IME Monitor)
>
> modules/jfx.incubator.richtext/src/main/java/jfx/incubator/scene/control/richtext/RichTextArea.java line 1438:
> 
>> 1436:      * @param sb the buffer to copy to
>> 1437:      * @param limit the maximum number of characters to copy, must be >= 0
>> 1438:      * @param lineSeparator the newline separator sequence, or null to use the platform default
> 
> Whether and how to add lineSeparator is under review via PR #1944. I recommend removing everything related to line separators for this PR, unless you want this PR to be dependent on #1944.

This and #1944 interrelated.  Ideally, this PR should go first.

> modules/jfx.incubator.richtext/src/main/java/jfx/incubator/scene/control/richtext/RichTextArea.java line 1442:
> 
>> 1440:      * @since 26
>> 1441:      */
>> 1442:     // TODO depends on JDK-8370140 (line separator property), private for now
> 
> While a `getText(...)` method would be useful, I don't see an enhancement request that proposes it. I would make it more clear that this is not public API. If you want to leave the docs in place for a future enhancement that might provide such a public API, I recommend changing `@since 26` to `@since 99` (or similar).

correct, this is not a public API (yet).

-------------

PR Review Comment: https://git.openjdk.org/jfx/pull/1938#discussion_r2474425664
PR Review Comment: https://git.openjdk.org/jfx/pull/1938#discussion_r2474429640