AgeGateExample/Presentation/CartVC/CustomStepper.swift - develop - sberpay/AgeGate-iOS

AgeGateExample/Presentation/CartVC/CustomStepper.swift
76 строк2 KB
SergeyGladkiy
[0.2.0] БДСЧ сценарий
30 июл 2026, 21:57
30 июл 2026, 21:57cbcdfcb
//
//  CustomStepper.swift
//  AgeGateExample
//
//  Created by Гладкий Сергей Игоревич on 24.07.2026.
//

import UIKit

final class CustomStepper: UIView {

    private var valueChanged: ((Int) -> Void)?
    private var value = 1 {
        didSet {
            countLabel.text = String(value)
            valueChanged?(value)
        }
    }

    private lazy var minusButton = makeButton(symbol: "minus", action: #selector(decrease))
    private lazy var plusButton = makeButton(symbol: "plus", action: #selector(increase))

    private lazy var countLabel: UILabel = {
        let view = UILabel()
        view.font = .systemFont(ofSize: 15, weight: .medium)
        view.textAlignment = .center
        view.widthAnchor.constraint(equalToConstant: 24).isActive = true
        return view
    }()

    private lazy var stackView: UIStackView = {
        let view = UIStackView(arrangedSubviews: [minusButton, countLabel, plusButton])
        view.axis = .horizontal
        view.alignment = .center
        view.spacing = 4
        view.translatesAutoresizingMaskIntoConstraints = false
        return view
    }()

    init() {
        super.init(frame: .zero)
        setupUI()
    }

    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    func config(value: Int, valueChanged: @escaping (Int) -> Void) {
        self.value = value
        self.valueChanged = valueChanged
    }

    @objc private func decrease() { value = max(0, value - 1) }
    @objc private func increase() { value = min(99, value + 1) }

    private func makeButton(symbol: String, action: Selector) -> UIButton {
        let button = UIButton(type: .system)
        button.setImage(UIImage(systemName: symbol), for: .normal)
        button.addTarget(self, action: action, for: .touchUpInside)
        button.widthAnchor.constraint(equalToConstant: 28).isActive = true
        return button
    }

    private func setupUI() {
        backgroundColor = .secondarySystemBackground
        layer.cornerRadius = 14
        addSubview(stackView)
        NSLayoutConstraint.activate([
            stackView.topAnchor.constraint(equalTo: topAnchor, constant: 4),
            stackView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 6),
            stackView.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -6),
            stackView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -4)
        ])
    }
}