CodeArea.getStyleSpans(from, to).append(...) does not append

[jmak35]

Hi Tomas,

I'm getting an issue with using the above method like so:

StyleSpans<Collection<String>> styleSpans = codeArea.getStyleSpans(startIndex, startIndex + text.length());

StyleSpansBuilder<Collection<String>> spansBuilder = new StyleSpansBuilder<>();
spansBuilder.add(Collections.singleton("class1"), text.length());
spansBuilder.add(Collections.singleton("class2"), text.length());

spansBuilder.create().forEach(styleSpans::append);

After this code executes, styleSpans still has a length of 0. If it was unmodifiable I'd assume it would've thrown an exception, but I believe that is not the case.

Is there anything I'm doing wrong?

Thank you.

[TomasMikula]

Hi, StyleSpans is indeed unmodifiable. append returns a new instance. The original one remains intact.

Anyway, if styleSpans has length 0, that would mean that text.length() is 0.

[TomasMikula]

Closing this as this is not an issue.