NetNewsWire/iOS/MasterFeed/Cell/MasterFeedTableViewCell.swift

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Swift
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//
// MasterTableViewCell.swift
// NetNewsWire
//
// Created by Brent Simmons on 8/1/15.
// Copyright © 2015 Ranchero Software, LLC. All rights reserved.
//
import UIKit
import RSCore
import Account
import RSTree
protocol MasterFeedTableViewCellDelegate: class {
func disclosureSelected(_ sender: MasterFeedTableViewCell, expanding: Bool)
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}
class MasterFeedTableViewCell : UITableViewCell {
weak var delegate: MasterFeedTableViewCellDelegate?
var allowDisclosureSelection = false
override var accessibilityLabel: String? {
set {}
get {
if unreadCount > 0 {
let unreadLabel = NSLocalizedString("unread", comment: "Unread label for accessiblity")
return "\(name) \(unreadCount) \(unreadLabel)"
} else {
return name
}
}
}
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var disclosureExpanded = false {
didSet {
updateDisclosureImage()
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}
}
var faviconImage: UIImage? {
didSet {
if let image = faviconImage {
faviconImageView.image = shouldShowImage ? image : nil
}
else {
faviconImageView.image = nil
}
}
}
var shouldShowImage = false {
didSet {
if shouldShowImage != oldValue {
setNeedsLayout()
}
faviconImageView.image = shouldShowImage ? faviconImage : nil
}
}
var unreadCount: Int {
get {
return unreadCountView.unreadCount
}
set {
if unreadCountView.unreadCount != newValue {
unreadCountView.unreadCount = newValue
unreadCountView.isHidden = (newValue < 1)
setNeedsLayout()
}
}
}
var name: String {
get {
return titleView.text ?? ""
}
set {
if titleView.text != newValue {
titleView.text = newValue
setNeedsLayout()
}
}
}
private let titleView: UILabel = {
let label = NonIntrinsicLabel()
label.numberOfLines = 0
label.allowsDefaultTighteningForTruncation = false
label.adjustsFontForContentSizeCategory = true
label.font = .preferredFont(forTextStyle: .body)
return label
}()
private let faviconImageView: UIImageView = {
return UIImageView(image: AppAssets.feedImage)
}()
private var unreadCountView = MasterFeedUnreadCountView(frame: CGRect.zero)
private var showingEditControl = false
private var disclosureButton: UIButton?
required init?(coder: NSCoder) {
super.init(coder: coder)
commonInit()
}
override func willTransition(to state: UITableViewCell.StateMask) {
super.willTransition(to: state)
showingEditControl = state.contains(.showingEditControl)
}
override func sizeThatFits(_ size: CGSize) -> CGSize {
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let shouldShowDisclosure = !(showingEditControl && showsReorderControl)
let layout = MasterFeedTableViewCellLayout(cellWidth: bounds.size.width, insets: safeAreaInsets, shouldShowImage: shouldShowImage, label: titleView, unreadCountView: unreadCountView, showingEditingControl: showingEditControl, indent: indentationLevel == 1, shouldShowDisclosure: shouldShowDisclosure)
return CGSize(width: bounds.width, height: layout.height)
}
override func layoutSubviews() {
super.layoutSubviews()
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let shouldShowDisclosure = !(showingEditControl && showsReorderControl)
let layout = MasterFeedTableViewCellLayout(cellWidth: bounds.size.width, insets: safeAreaInsets, shouldShowImage: shouldShowImage, label: titleView, unreadCountView: unreadCountView, showingEditingControl: showingEditControl, indent: indentationLevel == 1, shouldShowDisclosure: shouldShowDisclosure)
layoutWith(layout)
}
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@objc func buttonPressed(_ sender: UIButton) {
if allowDisclosureSelection {
disclosureExpanded = !disclosureExpanded
delegate?.disclosureSelected(self, expanding: disclosureExpanded)
}
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}
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}
private extension MasterFeedTableViewCell {
func commonInit() {
theme()
addSubviewAtInit(unreadCountView)
addSubviewAtInit(faviconImageView)
addSubviewAtInit(titleView)
addDisclosureView()
}
func theme() {
let bgView = UIView()
bgView.backgroundColor = AppAssets.selectionBackgroundColor
selectedBackgroundView = bgView
}
func addDisclosureView() {
disclosureButton = UIButton(type: .roundedRect)
disclosureButton!.tintColor = AppAssets.chevronDisclosureColor
disclosureButton!.addTarget(self, action: #selector(buttonPressed(_:)), for: UIControl.Event.touchUpInside)
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updateDisclosureImage()
addSubviewAtInit(disclosureButton!)
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}
func updateDisclosureImage() {
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if disclosureExpanded {
disclosureButton?.setImage(AppAssets.chevronDownImage, for: .normal)
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} else {
disclosureButton?.setImage(AppAssets.chevronRightImage, for: .normal)
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}
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}
func addSubviewAtInit(_ view: UIView) {
addSubview(view)
view.translatesAutoresizingMaskIntoConstraints = false
}
func layoutWith(_ layout: MasterFeedTableViewCellLayout) {
faviconImageView.setFrameIfNotEqual(layout.faviconRect)
titleView.setFrameIfNotEqual(layout.titleRect)
unreadCountView.setFrameIfNotEqual(layout.unreadCountRect)
disclosureButton?.setFrameIfNotEqual(layout.disclosureButtonRect)
separatorInset = layout.separatorInsets
}
}