こうなりました #swift #CodePiece

CodePiece.swift

import UIKit

class LinkTextView: UITextView {

    private var interractDate = Date()

    var linkTextViewDelegate: LinkTextViewDelegate?

    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        interractDate = Date()
        return linkURL(at: point) != nil ? self : nil
    }

    var isLongTap: Bool {
        return interractDate.timeIntervalSinceNow < -0.5
    }

    func linkURL(at point: CGPoint) -> URL? {
        guard let tappedPosition = self.closestPosition(to: point) else { return nil }

        let tappedOffset = offset(from: beginningOfDocument, to: tappedPosition)
        if tappedOffset >= text.length { return nil }
        let attributes = attributedText.attributes(at: tappedOffset, effectiveRange: nil)
        guard let linkAttribute = attributes[NSLinkAttributeName] as? String else { return nil }

        return URL(string: linkAttribute)
    }

    open override func addGestureRecognizer(_ gestureRecognizer: UIGestureRecognizer) {
        if gestureRecognizer is UILongPressGestureRecognizer {
            gestureRecognizer.addTarget(self, action: #selector(self.longPressAction(_:)))
            super.addGestureRecognizer(gestureRecognizer)
        }else if gestureRecognizer is UITapGestureRecognizer {
            super.addGestureRecognizer(gestureRecognizer)
        }else{
            super.addGestureRecognizer(gestureRecognizer)
        }
    }

    func longPressAction(_ gesture: UILongPressGestureRecognizer) {

        let location = gesture.location(in: self)
        guard let url = linkURL(at: location) else { return }

        if isLongTap {
            linkTextViewDelegate?.textView(self, longPress: url)
            return
        }
        switch gesture.state {
        case .ended:
            _ = linkTextViewDelegate?.textView?(self, shouldInteractWith: url, in: NSRange())
        default: break
        }
    }
}

protocol LinkTextViewDelegate: UITextViewDelegate {
    func textView(_ textView: UITextView, longPress URL: URL)
}