108 lines
4.3 KiB
Swift
108 lines
4.3 KiB
Swift
//
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// Breadcrumbs.swift
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// VDS
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//
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// Created by Kanamarlapudi, Vasavi on 11/03/24.
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//
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import Foundation
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import VDSColorTokens
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import Combine
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/// A Breadcrumbs contains BreadcrumbItems.
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/// It contains Breadcrumb Item Default, Breadcrumb Item Selected, Separator.
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/// Breadcrumbs are secondary navigation that use a hierarchy of internal links to tell customers where they are in an experience. Each breadcrumb links to its respective page, except for that of current page.
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@objc(VDSBreadcrumbs)
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open class Breadcrumbs: View {
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//--------------------------------------------------
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// MARK: - Public Properties
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//--------------------------------------------------
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/// Array of Breadcrumb Items that are shown in the group.
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open var breadcrumbItems: [BreadcrumbItem] = [] { didSet { setNeedsUpdate() } }
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/// Whether this object is enabled or not
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override open var isEnabled: Bool {
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didSet {
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breadcrumbItems.forEach { $0.isEnabled = isEnabled }
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}
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}
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/// Current Surface and this is used to pass down to child objects that implement Surfacable
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override open var surface: Surface {
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didSet {
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breadcrumbItems.forEach { $0.surface = surface }
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}
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}
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//--------------------------------------------------
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// MARK: - Private Properties
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//--------------------------------------------------
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let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout().with {
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$0.estimatedItemSize = UICollectionViewFlowLayout.automaticSize
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$0.minimumInteritemSpacing = VDSLayout.Spacing.space1X.value
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$0.minimumLineSpacing = VDSLayout.Spacing.space1X.value
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$0.sectionInset = .zero
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$0.scrollDirection = .vertical
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}
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///Collectionview to render Breadcrumbs indexes
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private lazy var collectionView: UICollectionView = {
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let collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
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collectionView.isScrollEnabled = false
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collectionView.translatesAutoresizingMaskIntoConstraints = false
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collectionView.delegate = self
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collectionView.dataSource = self
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collectionView.showsHorizontalScrollIndicator = false
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collectionView.showsVerticalScrollIndicator = false
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collectionView.register(BreadcrumbCellItem.self, forCellWithReuseIdentifier: BreadcrumbCellItem.identifier)
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collectionView.backgroundColor = .clear
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return collectionView
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}()
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//--------------------------------------------------
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// MARK: - Overrides
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//--------------------------------------------------
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/// Called once when a view is initialized and is used to Setup additional UI or other constants and configurations.
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open override func setup() {
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super.setup()
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}
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/// Executed on initialization for this View.
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open override func initialSetup() {
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super.initialSetup()
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addSubview(collectionView)
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collectionView.pinToSuperView()
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collectionView.heightAnchor.constraint(equalToConstant: 80).activate()
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}
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/// Resets to default settings.
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open override func reset() {
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super.reset()
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setNeedsUpdate()
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}
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/// Used to make changes to the View based off a change events or from local properties.
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open override func updateView() {
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super.updateView()
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collectionView.reloadData()
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}
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}
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extension Breadcrumbs: UICollectionViewDelegate, UICollectionViewDataSource {
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//--------------------------------------------------
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// MARK: - UICollectionView Delegate & Datasource
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//--------------------------------------------------
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public func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { breadcrumbItems.count
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}
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public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
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guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: BreadcrumbCellItem.identifier, for: indexPath) as? BreadcrumbCellItem else { return UICollectionViewCell() }
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let hideSlash = (indexPath.row == 0)
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cell.update(surface: surface, hideSlash: hideSlash, breadCrumbItem: breadcrumbItems[indexPath.row])
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return cell
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}
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public func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
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}
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}
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