session-ios/SessionUIKit/Components/SRCopyableLabel.swift

//
//  SRCopyableLabel.swift
//
//  Created by Stephen Radford on 08/09/2015.
//  Copyright (c) 2015 Cocoon Development Ltd. All rights reserved.
//

import UIKit

@objc public class SRCopyableLabel : UILabel {

    override public var canBecomeFirstResponder: Bool { return true }

    override init(frame: CGRect) {
        super.init(frame: frame)
        initialize()
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        initialize()
    }

    private func initialize() {
        isUserInteractionEnabled = true
        addGestureRecognizer(UILongPressGestureRecognizer(
            target: self,
            action: #selector(showMenu(sender:))
        ))
    }

    public override func copy(_ sender: Any?) {
        UIPasteboard.general.string = text
        UIMenuController.shared.hideMenu(from: self)
    }

    @objc func showMenu(sender: Any?) {
        becomeFirstResponder()
        let menu = UIMenuController.shared
        if !menu.isMenuVisible {
            menu.showMenu(from: self, rect: bounds)
        }
    }

    public override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
        return (action == #selector(copy(_:)))
    }
}