metatext/Views/Status/StatusBodyView.swift
2020-10-30 17:29:43 -07:00

138 lines
5.2 KiB
Swift

// Copyright © 2020 Metabolist. All rights reserved.
import UIKit
import ViewModels
final class StatusBodyView: UIView {
let spoilerTextLabel = UILabel()
let toggleShowContentButton = UIButton(type: .system)
let contentTextView = TouchFallthroughTextView()
let attachmentsView = StatusAttachmentsView()
let pollView = PollView()
let cardView = CardView()
var viewModel: StatusViewModel? {
didSet {
guard let viewModel = viewModel else { return }
let isContextParent = viewModel.configuration.isContextParent
let mutableContent = NSMutableAttributedString(attributedString: viewModel.content)
let mutableSpoilerText = NSMutableAttributedString(string: viewModel.spoilerText)
let contentFont = UIFont.preferredFont(forTextStyle: isContextParent ? .title3 : .callout)
let contentRange = NSRange(location: 0, length: mutableContent.length)
contentTextView.shouldFallthrough = !isContextParent
mutableContent.removeAttribute(.font, range: contentRange)
mutableContent.addAttributes(
[.font: contentFont, .foregroundColor: UIColor.label],
range: contentRange)
mutableContent.insert(emoji: viewModel.contentEmoji, view: contentTextView)
mutableContent.resizeAttachments(toLineHeight: contentFont.lineHeight)
contentTextView.attributedText = mutableContent
contentTextView.isHidden = contentTextView.text == ""
mutableSpoilerText.insert(emoji: viewModel.contentEmoji, view: spoilerTextLabel)
mutableSpoilerText.resizeAttachments(toLineHeight: spoilerTextLabel.font.lineHeight)
spoilerTextLabel.font = contentFont
spoilerTextLabel.attributedText = mutableSpoilerText
spoilerTextLabel.isHidden = spoilerTextLabel.text == ""
toggleShowContentButton.setTitle(
viewModel.shouldShowContent
? NSLocalizedString("status.show-less", comment: "")
: NSLocalizedString("status.show-more", comment: ""),
for: .normal)
toggleShowContentButton.isHidden = viewModel.spoilerText == ""
contentTextView.isHidden = !viewModel.shouldShowContent
attachmentsView.isHidden = viewModel.attachmentViewModels.count == 0
attachmentsView.viewModel = viewModel
pollView.isHidden = viewModel.pollOptions.count == 0
pollView.viewModel = viewModel
cardView.viewModel = viewModel.cardViewModel
cardView.isHidden = viewModel.cardViewModel == nil
}
}
override init(frame: CGRect) {
super.init(frame: frame)
initialSetup()
}
@available(*, unavailable)
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
extension StatusBodyView: UITextViewDelegate {
func textView(
_ textView: UITextView,
shouldInteractWith URL: URL,
in characterRange: NSRange,
interaction: UITextItemInteraction) -> Bool {
switch interaction {
case .invokeDefaultAction:
viewModel?.urlSelected(URL)
return false
case .preview: return false
case .presentActions: return false
@unknown default: return false
}
}
}
private extension StatusBodyView {
func initialSetup() {
let stackView = UIStackView()
addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.axis = .vertical
stackView.spacing = .compactSpacing
spoilerTextLabel.numberOfLines = 0
spoilerTextLabel.adjustsFontForContentSizeCategory = true
stackView.addArrangedSubview(spoilerTextLabel)
toggleShowContentButton.titleLabel?.font = .preferredFont(forTextStyle: .headline)
toggleShowContentButton.titleLabel?.adjustsFontForContentSizeCategory = true
toggleShowContentButton.addAction(
UIAction { [weak self] _ in self?.viewModel?.toggleShowContent() },
for: .touchUpInside)
stackView.addArrangedSubview(toggleShowContentButton)
contentTextView.adjustsFontForContentSizeCategory = true
contentTextView.isScrollEnabled = false
contentTextView.backgroundColor = .clear
contentTextView.delegate = self
stackView.addArrangedSubview(contentTextView)
stackView.addArrangedSubview(attachmentsView)
stackView.addArrangedSubview(pollView)
cardView.button.addAction(
UIAction { [weak self] _ in
guard
let viewModel = self?.viewModel,
let url = viewModel.cardViewModel?.url
else { return }
viewModel.urlSelected(url)
},
for: .touchUpInside)
stackView.addArrangedSubview(cardView)
NSLayoutConstraint.activate([
stackView.leadingAnchor.constraint(equalTo: leadingAnchor),
stackView.topAnchor.constraint(equalTo: topAnchor),
stackView.trailingAnchor.constraint(equalTo: trailingAnchor),
stackView.bottomAnchor.constraint(equalTo: bottomAnchor)
])
}
}