RFR: 8301121: RichTextArea Control (Incubator) [v3]

[Robert Lichtenberger]

On Wed, 14 Aug 2024 18:33:30 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> tests/manual/RichTextAreaDemo/src/com/oracle/demo/richtext/codearea/DemoSyntaxDecorator.java line 54:
>> 
>>> 52: 
>>> 53:     @Override
>>> 54:     public RichParagraph createRichParagraph(CodeTextModel model, int index) {
>> 
>> When implementing "real" syntax highlighting, the style of a paragraph will depend on the style of it's predecessors (e.g. multiline strings or multiline comments)...
>
> Correct, this is just a demo.
> 
> The information passed to the **SyntaxDecorator** interface should be sufficient to support any "real" syntax, at least I hope it is.  We are passing the model to each method, so it can re/construct the syntax or cache it as needed.

Consider this situation: When a user types some text into paragraph 2, it may change the styling in paragraph 2, 3, 4, ... 
Will the createRichParagraph - method be called for each paragraph after each typed character? That would probably be inefficient; On the other hand, if it is only called for the paragraph the user typed in, that may not be enough.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1524#discussion_r1721217128