RichTextEditor removes relative urls

[derflotzi]

Description

If you enter a link with a relative URL in the RichTextEditor, the link is removed.
Example: <a href="/my/realitve/url">link</a> results in <a rel="nofollow">link</a>

This is because the Jsoup implementation in the method static String sanitize(String html) removes the link.

Solution: If the visibility of the sanitize method were more open, I could adjust this behaviour myself.

Expected outcome

Output should be

<a href="/my/realitve/url">link</a>

Minimal reproducible example

RichTextEditor description = new RichTextEditor();
description.setValue("<a href=\"/my/realitve/url\">link</a>");
System.out.println(description.asHtml().getValue());
// results in: <a rel="nofollow">link</a>

Steps to reproduce

1. Add the snippet above to a view
2. See the printed wrong result

Environment

Vaadin version(s): 24.5.3
OS: macOS Sonoma 14.6.1

Browsers

Issue is not browser related

[yuriy-fix]

We could consider exposing the sanitize, so sanitization rules can be user-defined.