mirror of
https://github.com/metabolist/metatext.git
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156 lines
6.1 KiB
Swift
156 lines
6.1 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Combine
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import UIKit
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import ViewModels
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final class PollView: UIView {
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private let stackView = UIStackView()
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private let voteButtonStackView = UIStackView()
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private let bottomStackView = UIStackView()
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private let voteButton = UIButton(type: .system)
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private let refreshButton = UIButton(type: .system)
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private let refreshDividerLabel = UILabel()
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private let votesCountLabel = UILabel()
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private let votesCountDividerLabel = UILabel()
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private let expiryLabel = UILabel()
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private var selectionCancellable: AnyCancellable?
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var viewModel: StatusViewModel? {
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didSet {
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for view in stackView.arrangedSubviews {
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stackView.removeArrangedSubview(view)
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view.removeFromSuperview()
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}
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guard let viewModel = viewModel else {
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selectionCancellable = nil
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return
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}
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if !viewModel.isPollExpired, !viewModel.hasVotedInPoll {
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for (index, option) in viewModel.pollOptions.enumerated() {
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let button = PollOptionButton(
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title: option.title,
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emoji: viewModel.pollEmoji,
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multipleSelection: viewModel.isPollMultipleSelection)
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button.addAction(
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UIAction { _ in
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if viewModel.pollOptionSelections.contains(index) {
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viewModel.pollOptionSelections.remove(index)
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} else if viewModel.isPollMultipleSelection {
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viewModel.pollOptionSelections.insert(index)
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} else {
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viewModel.pollOptionSelections = [index]
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}
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},
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for: .touchUpInside)
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stackView.addArrangedSubview(button)
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}
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} else {
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for (index, option) in viewModel.pollOptions.enumerated() {
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let resultView = PollResultView(
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option: option,
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emoji: viewModel.pollEmoji,
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selected: viewModel.pollOwnVotes.contains(index),
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multipleSelection: viewModel.isPollMultipleSelection,
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votersCount: viewModel.pollVotersCount)
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stackView.addArrangedSubview(resultView)
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}
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}
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if !viewModel.isPollExpired, !viewModel.hasVotedInPoll {
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stackView.addArrangedSubview(voteButtonStackView)
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selectionCancellable = viewModel.$pollOptionSelections.sink { [weak self] in
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guard let self = self else { return }
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for (index, view) in self.stackView.arrangedSubviews.enumerated() {
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(view as? UIButton)?.isSelected = $0.contains(index)
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}
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self.voteButton.isEnabled = !$0.isEmpty
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}
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} else {
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selectionCancellable = nil
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}
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stackView.addArrangedSubview(bottomStackView)
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votesCountLabel.text = String.localizedStringWithFormat(
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NSLocalizedString("status.poll.participation-count", comment: ""),
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viewModel.pollVotersCount)
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if !viewModel.isPollExpired, let pollTimeLeft = viewModel.pollTimeLeft {
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expiryLabel.text = String.localizedStringWithFormat(
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NSLocalizedString("status.poll.time-left", comment: ""),
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pollTimeLeft)
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refreshButton.isHidden = false
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} else {
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expiryLabel.text = NSLocalizedString("status.poll.closed", comment: "")
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refreshButton.isHidden = true
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}
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refreshDividerLabel.isHidden = refreshButton.isHidden
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}
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}
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override init(frame: CGRect) {
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super.init(frame: frame)
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initialSetup()
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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}
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extension PollView {
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func initialSetup() {
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addSubview(stackView)
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stackView.translatesAutoresizingMaskIntoConstraints = false
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stackView.axis = .vertical
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stackView.spacing = .defaultSpacing
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voteButtonStackView.addArrangedSubview(voteButton)
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voteButtonStackView.addArrangedSubview(UIView())
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voteButton.titleLabel?.font = .preferredFont(forTextStyle: .headline)
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voteButton.titleLabel?.adjustsFontForContentSizeCategory = true
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voteButton.setTitle(NSLocalizedString("status.poll.vote", comment: ""), for: .normal)
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voteButton.addAction(UIAction { [weak self] _ in self?.viewModel?.vote() }, for: .touchUpInside)
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bottomStackView.spacing = .compactSpacing
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bottomStackView.addArrangedSubview(refreshButton)
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refreshButton.titleLabel?.font = .preferredFont(forTextStyle: .caption1)
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refreshButton.titleLabel?.adjustsFontForContentSizeCategory = true
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refreshButton.setTitle(NSLocalizedString("status.poll.refresh", comment: ""), for: .normal)
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refreshButton.addAction(UIAction { [weak self] _ in self?.viewModel?.refreshPoll() }, for: .touchUpInside)
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for label in [refreshDividerLabel, votesCountLabel, votesCountDividerLabel, expiryLabel] {
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bottomStackView.addArrangedSubview(label)
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label.font = .preferredFont(forTextStyle: .caption1)
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label.textColor = .secondaryLabel
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label.adjustsFontForContentSizeCategory = true
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}
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refreshDividerLabel.text = "•"
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votesCountDividerLabel.text = "•"
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bottomStackView.addArrangedSubview(UIView())
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NSLayoutConstraint.activate([
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stackView.leadingAnchor.constraint(equalTo: leadingAnchor),
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stackView.topAnchor.constraint(equalTo: topAnchor),
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stackView.trailingAnchor.constraint(equalTo: trailingAnchor),
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stackView.bottomAnchor.constraint(equalTo: bottomAnchor)
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])
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}
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}
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