forked from zelo72/mastodon-ios
113 lines
4.5 KiB
Swift
113 lines
4.5 KiB
Swift
//
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// PickServerCategoriesCell.swift
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// Mastodon
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//
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// Created by BradGao on 2021/2/23.
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//
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import os.log
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import UIKit
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import MastodonSDK
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protocol PickServerCategoriesCellDelegate: AnyObject {
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func pickServerCategoriesCell(_ cell: PickServerCategoriesCell, collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
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}
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final class PickServerCategoriesCell: UITableViewCell {
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weak var delegate: PickServerCategoriesCellDelegate?
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var diffableDataSource: UICollectionViewDiffableDataSource<CategoryPickerSection, CategoryPickerItem>?
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let metricView = UIView()
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let collectionView: UICollectionView = {
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let flowLayout = UICollectionViewFlowLayout()
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flowLayout.scrollDirection = .horizontal
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let view = ControlContainableCollectionView(frame: .zero, collectionViewLayout: flowLayout)
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view.register(PickServerCategoryCollectionViewCell.self, forCellWithReuseIdentifier: String(describing: PickServerCategoryCollectionViewCell.self))
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view.backgroundColor = .clear
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view.showsHorizontalScrollIndicator = false
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view.showsVerticalScrollIndicator = false
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view.layer.masksToBounds = false
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view.translatesAutoresizingMaskIntoConstraints = false
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return view
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}()
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override func prepareForReuse() {
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super.prepareForReuse()
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delegate = nil
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}
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override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
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super.init(style: style, reuseIdentifier: reuseIdentifier)
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_init()
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}
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required init?(coder: NSCoder) {
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super.init(coder: coder)
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_init()
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}
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}
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extension PickServerCategoriesCell {
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private func _init() {
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selectionStyle = .none
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backgroundColor = Asset.Colors.Background.systemGroupedBackground.color
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metricView.translatesAutoresizingMaskIntoConstraints = false
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contentView.addSubview(metricView)
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NSLayoutConstraint.activate([
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metricView.leadingAnchor.constraint(equalTo: contentView.readableContentGuide.leadingAnchor),
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metricView.trailingAnchor.constraint(equalTo: contentView.readableContentGuide.trailingAnchor),
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metricView.topAnchor.constraint(equalTo: contentView.topAnchor),
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metricView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
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metricView.heightAnchor.constraint(equalToConstant: 80).priority(.defaultHigh),
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])
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contentView.addSubview(collectionView)
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NSLayoutConstraint.activate([
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collectionView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
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collectionView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
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collectionView.topAnchor.constraint(equalTo: contentView.topAnchor),
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collectionView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
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collectionView.heightAnchor.constraint(equalToConstant: 80).priority(.defaultHigh),
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])
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collectionView.delegate = self
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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collectionView.collectionViewLayout.invalidateLayout()
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}
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}
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// MARK: - UICollectionViewDelegateFlowLayout
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extension PickServerCategoriesCell: UICollectionViewDelegateFlowLayout {
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func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: indexPath: %s", ((#file as NSString).lastPathComponent), #line, #function, indexPath.debugDescription)
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collectionView.selectItem(at: indexPath, animated: true, scrollPosition: .centeredHorizontally)
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delegate?.pickServerCategoriesCell(self, collectionView: collectionView, didSelectItemAt: indexPath)
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}
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func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
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layoutIfNeeded()
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return UIEdgeInsets(top: 0, left: metricView.frame.minX - collectionView.frame.minX, bottom: 0, right: collectionView.frame.maxX - metricView.frame.maxX)
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}
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func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
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return 16
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}
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func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
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return CGSize(width: 60, height: 80)
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}
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}
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