263 lines
11 KiB
Swift
263 lines
11 KiB
Swift
//
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// PollOptionTableViewCell.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-2-25.
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//
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import UIKit
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import Combine
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final class PollOptionTableViewCell: UITableViewCell {
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static let height: CGFloat = optionHeight + 2 * verticalMargin
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static let optionHeight: CGFloat = 44
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static let verticalMargin: CGFloat = 5
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static let checkmarkImageSize = CGSize(width: 26, height: 26)
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private var viewStateDisposeBag = Set<AnyCancellable>()
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var selectState: PollItem.Attribute.SelectState = .off
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var voteState: PollItem.Attribute.VoteState?
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let roundedBackgroundView = UIView()
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let voteProgressStripView: StripProgressView = {
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let view = StripProgressView()
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view.tintColor = Asset.Colors.Background.Poll.highlight.color
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return view
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}()
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let checkmarkBackgroundView: UIView = {
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let view = UIView()
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view.backgroundColor = .systemBackground
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return view
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}()
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let checkmarkImageView: UIView = {
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let imageView = UIImageView()
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let image = UIImage(systemName: "checkmark", withConfiguration: UIImage.SymbolConfiguration(pointSize: 14, weight: .bold))!
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imageView.image = image.withRenderingMode(.alwaysTemplate)
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imageView.tintColor = Asset.Colors.Button.highlight.color
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return imageView
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}()
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let optionLabel: UILabel = {
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let label = UILabel()
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label.font = .systemFont(ofSize: 15, weight: .medium)
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label.textColor = Asset.Colors.Label.primary.color
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label.text = "Option"
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label.textAlignment = UIApplication.shared.userInterfaceLayoutDirection == .leftToRight ? .left : .right
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return label
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}()
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let optionLabelMiddlePaddingView = UIView()
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let optionPercentageLabel: UILabel = {
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let label = UILabel()
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label.font = .systemFont(ofSize: 13, weight: .regular)
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label.textColor = Asset.Colors.Label.primary.color
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label.text = "50%"
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label.textAlignment = UIApplication.shared.userInterfaceLayoutDirection == .leftToRight ? .right : .left
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return label
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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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override func setSelected(_ selected: Bool, animated: Bool) {
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super.setSelected(selected, animated: animated)
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guard let voteState = voteState else { return }
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switch voteState {
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case .hidden:
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let color = Asset.Colors.Background.systemGroupedBackground.color
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self.roundedBackgroundView.backgroundColor = isHighlighted ? color.withAlphaComponent(0.8) : color
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case .reveal:
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break
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}
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}
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override func setHighlighted(_ highlighted: Bool, animated: Bool) {
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super.setHighlighted(highlighted, animated: animated)
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guard let voteState = voteState else { return }
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switch voteState {
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case .hidden:
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let color = Asset.Colors.Background.systemGroupedBackground.color
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self.roundedBackgroundView.backgroundColor = isHighlighted ? color.withAlphaComponent(0.8) : color
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case .reveal:
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break
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}
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}
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}
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extension PollOptionTableViewCell {
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private func _init() {
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selectionStyle = .none
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backgroundColor = .clear
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roundedBackgroundView.backgroundColor = Asset.Colors.Background.systemGroupedBackground.color
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roundedBackgroundView.translatesAutoresizingMaskIntoConstraints = false
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contentView.addSubview(roundedBackgroundView)
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NSLayoutConstraint.activate([
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roundedBackgroundView.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 5),
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roundedBackgroundView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
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roundedBackgroundView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
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contentView.bottomAnchor.constraint(equalTo: roundedBackgroundView.bottomAnchor, constant: 5),
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roundedBackgroundView.heightAnchor.constraint(equalToConstant: PollOptionTableViewCell.optionHeight).priority(.defaultHigh),
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])
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voteProgressStripView.translatesAutoresizingMaskIntoConstraints = false
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roundedBackgroundView.addSubview(voteProgressStripView)
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NSLayoutConstraint.activate([
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voteProgressStripView.topAnchor.constraint(equalTo: roundedBackgroundView.topAnchor),
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voteProgressStripView.leadingAnchor.constraint(equalTo: roundedBackgroundView.leadingAnchor),
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voteProgressStripView.trailingAnchor.constraint(equalTo: roundedBackgroundView.trailingAnchor),
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voteProgressStripView.bottomAnchor.constraint(equalTo: roundedBackgroundView.bottomAnchor),
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])
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checkmarkBackgroundView.translatesAutoresizingMaskIntoConstraints = false
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roundedBackgroundView.addSubview(checkmarkBackgroundView)
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NSLayoutConstraint.activate([
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checkmarkBackgroundView.topAnchor.constraint(equalTo: roundedBackgroundView.topAnchor, constant: 9),
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checkmarkBackgroundView.leadingAnchor.constraint(equalTo: roundedBackgroundView.leadingAnchor, constant: 9),
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roundedBackgroundView.bottomAnchor.constraint(equalTo: checkmarkBackgroundView.bottomAnchor, constant: 9),
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checkmarkBackgroundView.widthAnchor.constraint(equalToConstant: PollOptionTableViewCell.checkmarkImageSize.width).priority(.defaultHigh),
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checkmarkBackgroundView.heightAnchor.constraint(equalToConstant: PollOptionTableViewCell.checkmarkImageSize.height).priority(.defaultHigh),
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])
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checkmarkImageView.translatesAutoresizingMaskIntoConstraints = false
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checkmarkBackgroundView.addSubview(checkmarkImageView)
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NSLayoutConstraint.activate([
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checkmarkImageView.topAnchor.constraint(equalTo: checkmarkBackgroundView.topAnchor, constant: 5),
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checkmarkImageView.leadingAnchor.constraint(equalTo: checkmarkBackgroundView.leadingAnchor, constant: 5),
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checkmarkBackgroundView.trailingAnchor.constraint(equalTo: checkmarkImageView.trailingAnchor, constant: 5),
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checkmarkBackgroundView.bottomAnchor.constraint(equalTo: checkmarkImageView.bottomAnchor, constant: 5),
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])
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optionLabel.translatesAutoresizingMaskIntoConstraints = false
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roundedBackgroundView.addSubview(optionLabel)
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NSLayoutConstraint.activate([
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optionLabel.leadingAnchor.constraint(equalTo: checkmarkBackgroundView.trailingAnchor, constant: 14),
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optionLabel.centerYAnchor.constraint(equalTo: roundedBackgroundView.centerYAnchor),
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])
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optionLabelMiddlePaddingView.translatesAutoresizingMaskIntoConstraints = false
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roundedBackgroundView.addSubview(optionLabelMiddlePaddingView)
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NSLayoutConstraint.activate([
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optionLabelMiddlePaddingView.leadingAnchor.constraint(equalTo: optionLabel.trailingAnchor),
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optionLabelMiddlePaddingView.centerYAnchor.constraint(equalTo: roundedBackgroundView.centerYAnchor),
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optionLabelMiddlePaddingView.heightAnchor.constraint(equalToConstant: 4).priority(.defaultHigh),
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optionLabelMiddlePaddingView.widthAnchor.constraint(greaterThanOrEqualToConstant: 8).priority(.defaultLow),
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])
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optionLabelMiddlePaddingView.setContentHuggingPriority(.defaultLow, for: .horizontal)
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optionPercentageLabel.translatesAutoresizingMaskIntoConstraints = false
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roundedBackgroundView.addSubview(optionPercentageLabel)
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NSLayoutConstraint.activate([
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optionPercentageLabel.leadingAnchor.constraint(equalTo: optionLabelMiddlePaddingView.trailingAnchor),
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roundedBackgroundView.trailingAnchor.constraint(equalTo: optionPercentageLabel.trailingAnchor, constant: 18),
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optionPercentageLabel.centerYAnchor.constraint(equalTo: roundedBackgroundView.centerYAnchor),
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])
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optionPercentageLabel.setContentHuggingPriority(.required - 1, for: .horizontal)
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optionPercentageLabel.setContentCompressionResistancePriority(.required - 1, for: .horizontal)
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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updateCornerRadius()
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updateTextAppearance()
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}
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private func updateCornerRadius() {
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roundedBackgroundView.layer.masksToBounds = true
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roundedBackgroundView.layer.cornerRadius = PollOptionTableViewCell.optionHeight * 0.5
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roundedBackgroundView.layer.cornerCurve = .circular
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checkmarkBackgroundView.layer.masksToBounds = true
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checkmarkBackgroundView.layer.cornerRadius = PollOptionTableViewCell.checkmarkImageSize.width * 0.5
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checkmarkBackgroundView.layer.cornerCurve = .circular
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}
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func updateTextAppearance() {
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guard let voteState = voteState else {
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optionLabel.textColor = Asset.Colors.Label.primary.color
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optionLabel.layer.removeShadow()
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return
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}
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switch voteState {
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case .hidden:
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optionLabel.textColor = Asset.Colors.Label.primary.color
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optionLabel.layer.removeShadow()
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case .reveal(_, let percentage):
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if CGFloat(percentage) * voteProgressStripView.frame.width > optionLabelMiddlePaddingView.frame.minX {
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optionLabel.textColor = .white
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optionLabel.layer.setupShadow(x: 0, y: 0, blur: 4, spread: 0)
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} else {
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optionLabel.textColor = Asset.Colors.Label.primary.color
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optionLabel.layer.removeShadow()
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}
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if CGFloat(percentage) * voteProgressStripView.frame.width > optionLabelMiddlePaddingView.frame.maxX {
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optionPercentageLabel.textColor = .white
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optionPercentageLabel.layer.setupShadow(x: 0, y: 0, blur: 4, spread: 0)
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} else {
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optionPercentageLabel.textColor = Asset.Colors.Label.primary.color
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optionPercentageLabel.layer.removeShadow()
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}
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}
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}
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}
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#if canImport(SwiftUI) && DEBUG
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import SwiftUI
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struct PollTableViewCell_Previews: PreviewProvider {
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static var controls: some View {
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Group {
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UIViewPreview() {
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PollOptionTableViewCell()
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}
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.previewLayout(.fixed(width: 375, height: 44 + 10))
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UIViewPreview() {
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let cell = PollOptionTableViewCell()
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PollSection.configure(cell: cell, selectState: .off)
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return cell
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}
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.previewLayout(.fixed(width: 375, height: 44 + 10))
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UIViewPreview() {
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let cell = PollOptionTableViewCell()
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PollSection.configure(cell: cell, selectState: .on)
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return cell
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}
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.previewLayout(.fixed(width: 375, height: 44 + 10))
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}
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}
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static var previews: some View {
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Group {
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controls.colorScheme(.light)
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controls.colorScheme(.dark)
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}
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.background(Color.gray)
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}
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}
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#endif
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