| 1 | // |
| 2 | // ShelfSection.swift |
| 3 | // JomloCollectionView Example |
| 4 | // |
| 5 | // Created by Seto Elkahfi on 2026-01-27. |
| 6 | // Copyright © 2026 Seto Elkahfi. All rights reserved. |
| 7 | // |
| 8 | |
| 9 | import JomloCollectionView |
| 10 | import UIKit |
| 11 | |
| 12 | @MainActor |
| 13 | final class ShelfSection: JomloSection { |
| 14 | |
| 15 | let identifier: JomloSectionID |
| 16 | var onReloadNeeded: (@MainActor @Sendable () -> Void)? |
| 17 | |
| 18 | private let title: String |
| 19 | private let posterItems: [PosterItem] |
| 20 | private let onItemSelected: (@MainActor (PosterItem) -> Void)? |
| 21 | weak var presenter: UIViewController? |
| 22 | |
| 23 | init( |
| 24 | id: String, |
| 25 | title: String, |
| 26 | items: [PosterItem], |
| 27 | presenter: UIViewController? = nil, |
| 28 | onItemSelected: (@MainActor (PosterItem) -> Void)? = nil |
| 29 | ) { |
| 30 | self.identifier = JomloSectionID(id) |
| 31 | self.title = title |
| 32 | self.posterItems = items |
| 33 | self.presenter = presenter |
| 34 | self.onItemSelected = onItemSelected |
| 35 | } |
| 36 | |
| 37 | func items() -> [any JomloItem] { |
| 38 | posterItems |
| 39 | } |
| 40 | |
| 41 | func layoutSection( |
| 42 | environment: NSCollectionLayoutEnvironment, |
| 43 | sectionIndex: Int |
| 44 | ) -> NSCollectionLayoutSection { |
| 45 | JomloLayoutFactory.horizontalShelf( |
| 46 | itemWidth: .absolute(140), |
| 47 | itemHeight: .absolute(250), |
| 48 | interItemSpacing: 12, |
| 49 | headerHeight: .estimated(44) |
| 50 | ) |
| 51 | } |
| 52 | |
| 53 | func cell( |
| 54 | for item: any JomloItem, |
| 55 | in collectionView: UICollectionView, |
| 56 | at indexPath: IndexPath |
| 57 | ) -> UICollectionViewCell { |
| 58 | guard let posterItem = item as? PosterItem else { |
| 59 | return UICollectionViewCell() |
| 60 | } |
| 61 | return collectionView.dequeueJomloCell(PosterCell.self, for: indexPath, item: posterItem) |
| 62 | } |
| 63 | |
| 64 | func supplementaryView( |
| 65 | ofKind kind: String, |
| 66 | in collectionView: UICollectionView, |
| 67 | at indexPath: IndexPath |
| 68 | ) -> UICollectionReusableView? { |
| 69 | guard kind == UICollectionView.elementKindSectionHeader else { return nil } |
| 70 | guard |
| 71 | let header = collectionView.dequeueReusableSupplementaryView( |
| 72 | ofKind: kind, |
| 73 | withReuseIdentifier: JomloSectionHeaderView.reuseIdentifier, |
| 74 | for: indexPath |
| 75 | ) as? JomloSectionHeaderView |
| 76 | else { |
| 77 | return nil |
| 78 | } |
| 79 | header.configure(title: title, actionTitle: "See All") { [weak self] in |
| 80 | guard let self else { return } |
| 81 | let seeAllVC = SeeAllViewController(title: self.title, items: self.posterItems) |
| 82 | self.presenter?.navigationController?.pushViewController(seeAllVC, animated: true) |
| 83 | } |
| 84 | return header |
| 85 | } |
| 86 | |
| 87 | func didSelectItem(_ item: any JomloItem, at indexPath: IndexPath) { |
| 88 | guard let posterItem = item as? PosterItem else { return } |
| 89 | onItemSelected?(posterItem) |
| 90 | } |
| 91 | |
| 92 | var displayAnimation: JomloAnimator.Animation? { |
| 93 | JomloAnimator.fadeIn(duration: 0.3, delayFactor: 0.05) |
| 94 | } |
| 95 | } |