An NSTextView subclass that automatically highlights links

LinkDetectingTextView.swift

import AppKit

// based on https://www.hackingwithswift.com/example-code/strings/how-to-detect-a-url-in-a-string-using-nsdatadetector
// and https://stackoverflow.com/a/14604456/379776
class LinkDetectingTextView: NSTextView {
    override var string: String {
        didSet {
            highlightLinks()
        }
    }
    
    private func highlightLinks() {
        guard let detector = try? NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue) else { return }
        let matches = detector.matches(in: string, options: [], range: NSRange(location: 0, length: string.count))
        
        for match in matches {
            guard let url = match.url else { continue }
                
            let linkAttributes = [NSAttributedString.Key.link: url]
            textStorage?.addAttributes(linkAttributes, range: match.range)
        }
    }
}