144 lines
3.7 KiB
Swift
144 lines
3.7 KiB
Swift
//
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// MasterTableViewSectionHeader.swift
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// NetNewsWire
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//
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// Created by Maurice Parker on 4/18/19.
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// Copyright © 2019 Ranchero Software. All rights reserved.
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//
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import UIKit
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class MasterFeedTableViewSectionHeader: UITableViewHeaderFooterView {
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override var accessibilityLabel: String? {
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set {}
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get {
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if unreadCount > 0 {
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let unreadLabel = NSLocalizedString("unread", comment: "Unread label for accessiblity")
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return "\(name) \(unreadCount) \(unreadLabel)"
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} else {
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return name
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}
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}
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}
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var unreadCount: Int {
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get {
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return unreadCountView.unreadCount
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}
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set {
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if unreadCountView.unreadCount != newValue {
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unreadCountView.unreadCount = newValue
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unreadCountView.isHidden = (newValue < 1)
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setNeedsLayout()
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}
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}
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}
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var name: String {
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get {
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return titleView.text ?? ""
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}
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set {
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if titleView.text != newValue {
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titleView.text = newValue
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setNeedsDisplay()
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setNeedsLayout()
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}
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}
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}
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var disclosureExpanded = false {
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didSet {
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updateDisclosureImage()
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}
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}
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private let titleView: UILabel = {
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let label = NonIntrinsicLabel()
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label.numberOfLines = 0
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label.allowsDefaultTighteningForTruncation = false
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label.adjustsFontForContentSizeCategory = true
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label.font = .preferredFont(forTextStyle: .body)
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return label
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}()
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private let unreadCountView = MasterFeedUnreadCountView(frame: CGRect.zero)
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private var disclosureView: UIImageView = {
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let iView = NonIntrinsicImageView()
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iView.contentMode = .center
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return iView
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}()
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override init(reuseIdentifier: String?) {
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super.init(reuseIdentifier: reuseIdentifier)
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commonInit()
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}
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required init?(coder: NSCoder) {
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super.init(coder: coder)
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commonInit()
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}
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override func sizeThatFits(_ size: CGSize) -> CGSize {
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let unreadCountView = MasterFeedUnreadCountView(frame: CGRect.zero)
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// Since we can't reload Section Headers to reset the height after we get the
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// unread count did change, we always assume a large unread count
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//
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// This means that sometimes on the second to largest font size will have extra
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// space under the account name. This is better than having it overflow into the
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// cell below.
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unreadCountView.unreadCount = 888
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let layout = MasterFeedTableViewCellLayout(cellWidth: size.width, insets: safeAreaInsets, shouldShowImage: false, label: titleView, unreadCountView: unreadCountView, showingEditingControl: false, indent: false, shouldShowDisclosure: true)
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return CGSize(width: bounds.width, height: layout.height)
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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let layout = MasterFeedTableViewCellLayout(cellWidth: bounds.size.width, insets: safeAreaInsets, shouldShowImage: false, label: titleView, unreadCountView: unreadCountView, showingEditingControl: false, indent: false, shouldShowDisclosure: true)
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layoutWith(layout)
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}
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}
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private extension MasterFeedTableViewSectionHeader {
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func commonInit() {
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addSubviewAtInit(unreadCountView)
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addSubviewAtInit(titleView)
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updateDisclosureImage()
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addSubviewAtInit(disclosureView)
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addBackgroundView()
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}
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func updateDisclosureImage() {
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if disclosureExpanded {
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disclosureView.image = AppAssets.chevronDownImage
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} else {
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disclosureView.image = AppAssets.chevronRightImage
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}
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}
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func addSubviewAtInit(_ view: UIView) {
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addSubview(view)
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view.translatesAutoresizingMaskIntoConstraints = false
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}
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func layoutWith(_ layout: MasterFeedTableViewCellLayout) {
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titleView.setFrameIfNotEqual(layout.titleRect)
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unreadCountView.setFrameIfNotEqual(layout.unreadCountRect)
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disclosureView.setFrameIfNotEqual(layout.disclosureButtonRect)
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}
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func addBackgroundView() {
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self.backgroundView = UIView(frame: self.bounds)
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self.backgroundView?.backgroundColor = UIColor.systemGroupedBackground
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}
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}
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