I noticed that paragraphs in CodeArea are updated too aggressively. For
example, when I press a single key like '1', about 100 paragraphs get refreshed.
To improve performance, I decided to implement it this way: I store information
for each paragraph indicating whether its styles are up-to-date or not.
From SyntaxDecorator, I return the existing paragraph from the model if the
styles are valid. If the styles are outdated, I build a new paragraph.
Something like this:
codeArea.setSyntaxDecorator(new SyntaxDecorator() {
@Override
public RichParagraph createRichParagraph(CodeTextModel model, int
index) {
if (paragraphStylesAreValid) {
return codeArea.getModel().getParagraph(index);
} else {
RichParagraph.Builder b = RichParagraph.builder();
...
return b.build();
}
}
@Override
public void handleChange(CodeTextModel m, TextPos start, TextPos
end, int charsTop,
int linesAdded, int charsBottom) {
}
});
However, it didn't work because of this line -
https://github.com/openjdk/jfx/blob/3fdd21386d6db96294fcecd80afc25d09732c067/modules/jfx.incubator.richtext/src/main/java/jfx/incubator/scene/control/richtext/model/CodeTextModel.java#L83
As I result I get StackOverflowError. Could anyone say how to do it?
Best regards, Pavel
