Xcode - Зависимые выборки PickerView

Question

Я работаю над UIPickerView. Мне нужно сделать кнопку зависимой от другой кнопки. Например, button3 будет зависеть от выбора button2, а button2 будет зависеть от выбора button1.

Я пробовал все «возможные» варианты, но не нашел результатов. Жду решения. Большое вам спасибо.

Вот мой код:

import UIKit

class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {

//MARK:- IBOutlets
@IBOutlet weak var rslt1: UIButton!
@IBOutlet weak var rslt2: UIButton!
@IBOutlet weak var rslt3: UIButton!
@IBOutlet weak var rslt4: UIButton!
@IBOutlet weak var rslt5: UIButton!
@IBOutlet weak var rslt6: UIButton!
@IBOutlet weak var rslt7: UIButton!
@IBOutlet weak var button1: UIButton!
@IBOutlet weak var button2: UIButton!
@IBOutlet weak var button3: UIButton!
@IBOutlet weak var button4: UIButton!
@IBOutlet weak var button5: UIButton!
@IBOutlet weak var button6: UIButton!
@IBOutlet weak var button7: UIButton!
@IBOutlet weak var ImageView: UIImageView!

//MARK:- View Did Load 
override func viewDidLoad() {
    super.viewDidLoad()
}

//MARK:- Button Actions
@IBAction func button1Clicked(_ sender: Any) {
    mainPicker.isHidden = false
    mainPicker.delegate = self
    mainPicker.dataSource = self
    mainPicker.tag = 1
}

@IBAction func button2Clicked(_ sender: Any) {
    mainPicker.isHidden = false
    mainPicker.delegate = self
    mainPicker.dataSource = self
    mainPicker.tag = 2
}

@IBAction func buttonbutton3Clicked(_ sender: Any) {
    mainPicker.isHidden = false
    mainPicker.delegate = self
    mainPicker.dataSource = self
    mainPicker.tag = 3
}

@IBAction func button4Clicked(_ sender: Any) {
    mainPicker.isHidden = false
    mainPicker.delegate = self
    mainPicker.dataSource = self
    mainPicker.tag = 4
}

@IBAction func button5Clicked(_ sender: Any) {
    mainPicker.isHidden = false
    mainPicker.delegate = self
    mainPicker.dataSource = self
    mainPicker.tag = 5
}

@IBAction func button6Clicked(_ sender: Any) {
    mainPicker.isHidden = false
    mainPicker.delegate = self
    mainPicker.dataSource = self
    mainPicker.tag = 6
}

@IBAction func button7Clicked(_ sender: Any) {
    mainPicker.isHidden = false
    mainPicker.delegate = self
    mainPicker.dataSource = self
    mainPicker.tag = 7
}

let button1data = [“option 1”, "option 2”, "option 3”]
let button2data = [“A”: [“option 1”, "option 2”, "option 3”], “B”: [“option 1”, "option 2”, "option 3”], “C”: [“option 1”, "option 2”, "option 3”]]
//let button3data = [“option 1”, "option 2”, "option 3”]
let button4data = [“option 1”, "option 2”, "option 3”]
let button5data = [“option 1”, "option 2”, "option 3”]
let button6data = [“option 1”, "option 2”, "option 3”]
let button7data = [“option 1”, "option 2”, "option 3”]


//MARK:- Picker View Delegate and Datasources
func numberOfComponents(in pickerView: UIPickerView) -> Int{
    return 1
}

func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int{


    switch pickerView.tag {
    case 1:
        return button1data.count
    case 2:
        return button2data..count
    case 3:
        return button3data..count
    case 4:
        return button4data..count
    case 5:
        return button5data.count
    case 6:
        return button6data.count
    case 7:
        return button7data.count
    default:
        return 1
    }
}

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
    switch pickerView.tag {
    case 1:
        return button1data[row]
    case 2:
        return button2data[row]
    case 3:
        return button3data[row]
    case 4:
        return button4data[row]
    case 5:
        return button5data[row]
    case 6:
        return button6data[row]
    case 7:
        return button7data[row]
    default:
        return "Data not found"
    }
}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    switch pickerView.tag {
    case 1:
        rslt1.setTitle(button1data[row], for: .normal)
        mainPicker.isHidden = true
    case 2:
        rslt2.setTitle(button2data[row], for: .normal)
        mainPicker.isHidden = true
    case 3:
        rslt3.setTitle(button3data[row], for: .normal)
        mainPicker.isHidden = true
    case 4:
        rslt4.setTitle(button4data[row], for: .normal)
        mainPicker.isHidden = true
    case 5:
        rslt5.setTitle(button5data[row], for: .normal)
        mainPicker.isHidden = true
    case 6:
        rslt6.setTitle(button6data[row], for: .normal)
        mainPicker.isHidden = true
    case 7:
        rslt7.setTitle(button7data[row], for: .normal)
        mainPicker.isHidden = true
    default:
        return
    }
}
}