yggdrasil-ios/Yggdrasil Network iOS/UI Components/CopyableLabel.swift

//
//  CopyableLabel.swift
//  YggdrasilNetwork
//
//  Created by Neil Alexander on 26/02/2019.
//

import UIKit

class CopyableLabel: UILabel {
    override public var canBecomeFirstResponder: Bool {
        get {
            return true
        }
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        self.isUserInteractionEnabled = true
        self.addGestureRecognizer(UILongPressGestureRecognizer(
            target: self,
            action: #selector(showMenu(sender:))
        ))
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        self.isUserInteractionEnabled = true
        self.addGestureRecognizer(UILongPressGestureRecognizer(
            target: self,
            action: #selector(showMenu(sender:))
        ))
    }
    
    override func copy(_ sender: Any?) {
        UIPasteboard.general.string = text
        UIMenuController.shared.setMenuVisible(false, animated: true)
    }
    
    @objc func showMenu(sender: Any?) {
        self.becomeFirstResponder()
        let menu = UIMenuController.shared
        if !menu.isMenuVisible {
            menu.setTargetRect(bounds, in: self)
            menu.setMenuVisible(true, animated: true)
        }
    }
    
    override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
        return (action == #selector(copy(_:)))
    }
}