custom

//
//  CustomKeybrd.swift
//  MyInterfaceTemplates
//
//  Created by Константин Седлецкий on 28.01.2020.
//  Copyright © 2020 Бизнес.ру. All rights reserved.
//

import UIKit

class CustomKeybrd: UIView {
    let buttonsArray1 = ["1", "2", "3"]
    let buttonsArray2 = ["4", "5", "6"]
    let buttonsArray3 = ["7", "8", "9"]
    var buttons123 = [UIButton] ()
    var buttons456 = [UIButton] ()
    var buttons789 = [UIButton] ()

    func updateView() {
        buttons123.removeAll()
        buttons456.removeAll()
        buttons789.removeAll()
        subviews.forEach { (view) in
            view.removeFromSuperview()
        }

        for buttonTitle in buttonsArray1 {
            let button = UIButton(type: .system)
            let title = NSAttributedString(string: buttonTitle, attributes: [
                NSAttributedString.Key.foregroundColor: UIColor(red: 0.554, green: 0.587, blue: 0.638, alpha: 1),
                NSAttributedString.Key.font: UIFont.init(name: "ProximaNova-Regular", size: 40)!
            ])
            button.setAttributedTitle(title, for: .normal)
            buttons123.append(button)
        }

        for buttonTitle in buttonsArray2 {
            let button = UIButton(type: .system)
            let title = NSAttributedString(string: buttonTitle, attributes: [
                NSAttributedString.Key.foregroundColor: UIColor(red: 0.554, green: 0.587, blue: 0.638, alpha: 1),
                NSAttributedString.Key.font: UIFont.init(name: "ProximaNova-Regular", size: 40)!
            ])
            button.setAttributedTitle(title, for: .normal)
            buttons456.append(button)
        }

        for buttonTitle in buttonsArray3 {
            let button = UIButton(type: .system)
            let title = NSAttributedString(string: buttonTitle, attributes: [
                NSAttributedString.Key.foregroundColor: UIColor(red: 0.554, green: 0.587, blue: 0.638, alpha: 1),
                NSAttributedString.Key.font: UIFont.init(name: "ProximaNova-Regular", size: 40)!
            ])
            button.setAttributedTitle(title, for: .normal)
            buttons789.append(button)
        }

        let buttons123Stack = UIStackView(arrangedSubviews: buttons123)
        buttons123Stack.translatesAutoresizingMaskIntoConstraints = false
        buttons123Stack.axis = NSLayoutConstraint.Axis.horizontal
        buttons123Stack.distribution = UIStackView.Distribution.equalSpacing
        buttons123Stack.alignment = UIStackView.Alignment.center

        let buttons456Stack = UIStackView(arrangedSubviews: buttons456)
        buttons456Stack.translatesAutoresizingMaskIntoConstraints = false
        buttons456Stack.axis = NSLayoutConstraint.Axis.horizontal
        buttons456Stack.distribution = UIStackView.Distribution.equalSpacing
        buttons456Stack.alignment = UIStackView.Alignment.center

        let buttons789Stack = UIStackView(arrangedSubviews: buttons789)
        buttons789Stack.translatesAutoresizingMaskIntoConstraints = false
        buttons789Stack.axis  = NSLayoutConstraint.Axis.horizontal
        buttons789Stack.distribution  = UIStackView.Distribution.equalSpacing
        buttons789Stack.alignment = UIStackView.Alignment.center

        addSubview(buttons123Stack)
        addSubview(buttons456Stack)
        addSubview(buttons789Stack)

        buttons123Stack.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
        buttons123Stack.rightAnchor.constraint(equalTo: rightAnchor).isActive = true

        buttons456Stack.topAnchor.constraint(equalTo: buttons123Stack.bottomAnchor).isActive = true
        buttons456Stack.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
        buttons456Stack.rightAnchor.constraint(equalTo: rightAnchor).isActive = true

        buttons789Stack.topAnchor.constraint(equalTo: buttons456Stack.bottomAnchor).isActive = true
        buttons789Stack.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
        buttons789Stack.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
    }

    override func draw(_ rect: CGRect) {
        updateView()
    }
}