froggomad

extension TitledCollectionViewController: UICollectionViewDelegate {
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        print("tapped cell at \(indexPath)")
    }
}

froggomad

extension TitledCollectionViewController: TitledCollectionViewDelegate {
    
    func itemWasSelected(_ fruit: Fruit) {
        print("Fruit named \(fruit.description) was selected")
    }
    
    func itemWasSelected(_ vegetable: Vegetable) {
        print("Vegetable named \(vegetable.description) was selected")
    }
    

froggomad

extension TitledCollectionView: UICollectionViewDelegate {
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        updateControllerDelegate(with: indexPath.item)
    }
    
    private func updateControllerDelegate(with item: Int) {
        switch self.produce {
        case .fruit:
            let fruit = Fruit.allCases[item]
            delegate?.itemWasSelected(fruit)

froggomad

protocol TitledCollectionViewDelegate: AnyObject {
    func itemWasSelected(_ fruit: Fruit)
    func itemWasSelected(_ vegetable: Vegetable)
}

froggomad

class TitledCollectionViewController: UIViewController {
    lazy var fruitView = TitledCollectionView(produce: .fruit)
    lazy var vegetableView = TitledCollectionView(produce: .vegetable)
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupViews()
    }
    
    func setupViews() {

froggomad

extension TitledCollectionView {
    
    class Layout: UICollectionViewFlowLayout {
        static let heightConstant: CGFloat = 150
        
        override func prepare() {
            super.prepare()
            guard let collectionView = collectionView else { return }
            // TODO: why -13 to make the size even? section insets?
            itemSize = CGSize(width: collectionView.frame.width / 3 - 13, height: Self.heightConstant - 40)

froggomad

    extension TitledCollectionView: UICollectionViewDataSource {
        
        func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
            produce?.count ?? 0
        }

        func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
           
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: ProduceCollectionViewCell.identifier, for: indexPath) as! ProduceCollectionViewCell
            

froggomad

import UIKit

class TitledCollectionView: UIView {

    var produce: Produce? {
        didSet {
            titleLabel.text = produce?.description
        }
    }

froggomad

class ProduceCollectionViewCell: UICollectionViewCell {
    static let identifier = "ProduceCollectionViewCell"
    
    var viewModel: ProduceViewModel? {
        didSet {
            titleLabel.text = viewModel?.description
        }
    }
    
    lazy var titleLabel: UILabel = {

froggomad

    enum Fruit: String {
        case apple
        case orange
        case dragonFruit
        
        var description: String {
            var name: String = ""
                    
            for char in String(describing: rawValue) {
                let strChar = String(char)