mirror of
https://github.com/metabolist/metatext.git
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407 lines
18 KiB
Swift
407 lines
18 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Combine
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import SDWebImage
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import UIKit
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import ViewModels
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final class CompositionView: UIView {
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let avatarImageView = SDAnimatedImageView()
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let changeIdentityButton = UIButton()
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let spoilerTextField = UITextField()
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let textView = ImagePastableTextView()
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let textViewPlaceholder = UILabel()
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let removeButton = UIButton(type: .close)
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let inReplyToView = UIView()
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let hasReplyFollowingView = UIView()
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let attachmentsView = AttachmentsView()
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let attachmentUploadsStackView = UIStackView()
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let pollView: CompositionPollView
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let markAttachmentsSensitiveView: MarkAttachmentsSensitiveView
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private let viewModel: CompositionViewModel
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private let parentViewModel: NewStatusViewModel
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private var cancellables = Set<AnyCancellable>()
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init(viewModel: CompositionViewModel, parentViewModel: NewStatusViewModel) {
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self.viewModel = viewModel
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self.parentViewModel = parentViewModel
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markAttachmentsSensitiveView = MarkAttachmentsSensitiveView(viewModel: viewModel)
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pollView = CompositionPollView(viewModel: viewModel, parentViewModel: parentViewModel)
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super.init(frame: .zero)
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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 CompositionView {
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var id: CompositionViewModel.Id { viewModel.id }
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}
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extension CompositionView: UITextViewDelegate {
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func textViewDidChange(_ textView: UITextView) {
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viewModel.text = textView.text
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if let textToSelectedRange = textView.textToSelectedRange {
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viewModel.textToSelectedRange = textToSelectedRange
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}
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}
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}
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private extension CompositionView {
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static let attachmentCollectionViewHeight: CGFloat = 200
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// swiftlint:disable:next function_body_length
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func initialSetup() {
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tag = viewModel.id.hashValue
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addSubview(avatarImageView)
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avatarImageView.translatesAutoresizingMaskIntoConstraints = false
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avatarImageView.layer.cornerRadius = .avatarDimension / 2
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avatarImageView.clipsToBounds = true
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avatarImageView.setContentHuggingPriority(.required, for: .horizontal)
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changeIdentityButton.translatesAutoresizingMaskIntoConstraints = false
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avatarImageView.addSubview(changeIdentityButton)
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avatarImageView.isUserInteractionEnabled = true
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changeIdentityButton.setBackgroundImage(.highlightedButtonBackground, for: .highlighted)
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changeIdentityButton.showsMenuAsPrimaryAction = true
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changeIdentityButton.menu =
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changeIdentityMenu(identities: parentViewModel.identityContext.authenticatedOtherIdentities)
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let stackView = UIStackView()
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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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let spoilerTextinputAccessoryView = CompositionInputAccessoryView(
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viewModel: viewModel,
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parentViewModel: parentViewModel,
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autocompleteQueryPublisher: viewModel.$contentWarningAutocompleteQuery.eraseToAnyPublisher())
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stackView.addArrangedSubview(spoilerTextField)
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spoilerTextField.borderStyle = .roundedRect
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spoilerTextField.adjustsFontForContentSizeCategory = true
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spoilerTextField.font = .preferredFont(forTextStyle: .body)
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spoilerTextField.placeholder = NSLocalizedString("status.spoiler-text-placeholder", comment: "")
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spoilerTextField.inputAccessoryView = spoilerTextinputAccessoryView
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spoilerTextField.tag = spoilerTextinputAccessoryView.tagForInputView
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spoilerTextField.isHidden_stackViewSafe = !viewModel.displayContentWarning
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spoilerTextField.addAction(
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UIAction { [weak self] _ in self?.spoilerTextFieldEditingChanged() },
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for: .editingChanged)
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let textViewFont = UIFont.preferredFont(forTextStyle: .body)
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let textInputAccessoryView = CompositionInputAccessoryView(
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viewModel: viewModel,
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parentViewModel: parentViewModel,
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autocompleteQueryPublisher: viewModel.$autocompleteQuery.eraseToAnyPublisher())
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stackView.addArrangedSubview(textView)
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textView.keyboardType = .twitter
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textView.isScrollEnabled = false
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textView.adjustsFontForContentSizeCategory = true
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textView.font = textViewFont
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textView.textContainerInset = .zero
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textView.textContainer.lineFragmentPadding = 0
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textView.inputAccessoryView = textInputAccessoryView
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textView.tag = textInputAccessoryView.tagForInputView
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textView.inputAccessoryView?.sizeToFit()
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textView.delegate = self
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textView.addSubview(textViewPlaceholder)
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textViewPlaceholder.translatesAutoresizingMaskIntoConstraints = false
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textViewPlaceholder.adjustsFontForContentSizeCategory = true
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textViewPlaceholder.font = .preferredFont(forTextStyle: .body)
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textViewPlaceholder.textColor = .secondaryLabel
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textViewPlaceholder.text = NSLocalizedString("compose.prompt", comment: "")
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stackView.addArrangedSubview(attachmentsView)
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attachmentsView.isHidden_stackViewSafe = true
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stackView.addArrangedSubview(attachmentUploadsStackView)
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attachmentUploadsStackView.axis = .vertical
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attachmentUploadsStackView.isHidden_stackViewSafe = true
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stackView.addArrangedSubview(markAttachmentsSensitiveView)
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markAttachmentsSensitiveView.isHidden_stackViewSafe = true
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stackView.addArrangedSubview(pollView)
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pollView.isHidden_stackViewSafe = true
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addSubview(removeButton)
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removeButton.translatesAutoresizingMaskIntoConstraints = false
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removeButton.showsMenuAsPrimaryAction = true
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removeButton.menu = UIMenu(
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children: [
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UIAction(
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title: NSLocalizedString("remove", comment: ""),
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image: UIImage(systemName: "trash"),
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attributes: .destructive) { [weak self] _ in
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guard let self = self else { return }
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self.parentViewModel.remove(viewModel: self.viewModel)
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}])
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removeButton.setContentHuggingPriority(.required, for: .horizontal)
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removeButton.setContentCompressionResistancePriority(.required, for: .horizontal)
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for view in [inReplyToView, hasReplyFollowingView] {
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addSubview(view)
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view.translatesAutoresizingMaskIntoConstraints = false
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view.backgroundColor = .opaqueSeparator
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view.widthAnchor.constraint(equalToConstant: .hairline).isActive = true
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}
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textView.text = viewModel.text
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spoilerTextField.text = viewModel.contentWarning
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let textViewBaselineConstraint = textView.topAnchor.constraint(
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lessThanOrEqualTo: avatarImageView.centerYAnchor,
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constant: -textViewFont.lineHeight / 2)
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viewModel.$text.map(\.isEmpty)
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.sink { [weak self] in self?.textViewPlaceholder.isHidden_stackViewSafe = !$0 }
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.store(in: &cancellables)
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viewModel.$displayContentWarning
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.throttle(for: .seconds(TimeInterval.zeroIfReduceMotion(.shortAnimationDuration)),
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scheduler: DispatchQueue.main,
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latest: true)
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.sink { [weak self] displayContentWarning in
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guard let self = self else { return }
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if self.spoilerTextField.isHidden && self.textView.isFirstResponder && displayContentWarning {
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self.spoilerTextField.becomeFirstResponder()
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} else if !self.spoilerTextField.isHidden
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&& self.spoilerTextField.isFirstResponder
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&& !displayContentWarning {
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self.textView.becomeFirstResponder()
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}
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UIView.animate(withDuration: .zeroIfReduceMotion(.shortAnimationDuration)) {
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self.spoilerTextField.isHidden_stackViewSafe = !displayContentWarning
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textViewBaselineConstraint.isActive = !displayContentWarning
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}
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}
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.store(in: &cancellables)
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parentViewModel.$identityContext
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.sink { [weak self] in
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guard let self = self else { return }
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let avatarURL = $0.appPreferences.animateAvatars == .everywhere
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? $0.identity.account?.avatar
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: $0.identity.account?.avatarStatic
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self.avatarImageView.sd_setImage(with: avatarURL?.url)
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self.changeIdentityButton.accessibilityLabel = $0.identity.handle
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self.changeIdentityButton.accessibilityHint =
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NSLocalizedString("compose.change-identity-button.accessibility-hint", comment: "")
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}
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.store(in: &cancellables)
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parentViewModel.identityContext.$authenticatedOtherIdentities
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.sink { [weak self] in self?.changeIdentityButton.menu = self?.changeIdentityMenu(identities: $0) }
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.store(in: &cancellables)
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viewModel.$attachmentViewModels
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.throttle(for: .seconds(TimeInterval.zeroIfReduceMotion(.shortAnimationDuration)),
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scheduler: DispatchQueue.main,
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latest: true)
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.sink { [weak self] attachmentViewModels in
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UIView.animate(withDuration: .zeroIfReduceMotion(.shortAnimationDuration)) {
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self?.attachmentsView.viewModel = self?.viewModel
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self?.attachmentsView.isHidden_stackViewSafe = attachmentViewModels.isEmpty
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self?.markAttachmentsSensitiveView.isHidden_stackViewSafe = attachmentViewModels.isEmpty
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}
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}
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.store(in: &cancellables)
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viewModel.$canAddAttachment
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.sink { [weak self] in self?.textView.canPasteImage = $0 }
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.store(in: &cancellables)
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viewModel.$attachmentUploadViewModels
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.throttle(for: .seconds(TimeInterval.zeroIfReduceMotion(.shortAnimationDuration)),
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scheduler: DispatchQueue.main,
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latest: true)
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.sink { [weak self] attachmentUploadViewModels in
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UIView.animate(withDuration: .zeroIfReduceMotion(.shortAnimationDuration)) {
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self?.attachmentUploadsStackView.isHidden_stackViewSafe = attachmentUploadViewModels.isEmpty
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self?.update(attachmentUploadViewModels: attachmentUploadViewModels)
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}
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}
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.store(in: &cancellables)
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textView.pastedItemProviders.sink { [weak self] in
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guard let self = self else { return }
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self.viewModel.attach(itemProviders: [$0],
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parentViewModel: self.parentViewModel)
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}
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.store(in: &cancellables)
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viewModel.$displayPoll
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.throttle(for: .seconds(TimeInterval.zeroIfReduceMotion(.shortAnimationDuration)),
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scheduler: DispatchQueue.main,
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latest: true)
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.sink { [weak self] displayPoll in
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if !displayPoll {
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self?.textView.becomeFirstResponder()
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}
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UIView.animate(withDuration: .zeroIfReduceMotion(.shortAnimationDuration)) {
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self?.pollView.isHidden_stackViewSafe = !displayPoll
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}
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}
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.store(in: &cancellables)
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textInputAccessoryView.autocompleteSelections
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.sink { [weak self] in self?.autocompleteSelected($0) }
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.store(in: &cancellables)
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spoilerTextinputAccessoryView.autocompleteSelections
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.sink { [weak self] in self?.spoilerTextAutocompleteSelected($0) }
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.store(in: &cancellables)
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let guide = UIDevice.current.userInterfaceIdiom == .pad ? readableContentGuide : layoutMarginsGuide
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let constraints = [
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avatarImageView.heightAnchor.constraint(equalToConstant: .avatarDimension),
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avatarImageView.widthAnchor.constraint(equalToConstant: .avatarDimension),
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avatarImageView.topAnchor.constraint(equalTo: guide.topAnchor),
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avatarImageView.leadingAnchor.constraint(equalTo: guide.leadingAnchor),
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avatarImageView.bottomAnchor.constraint(lessThanOrEqualTo: guide.bottomAnchor),
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changeIdentityButton.leadingAnchor.constraint(equalTo: avatarImageView.leadingAnchor),
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changeIdentityButton.topAnchor.constraint(equalTo: avatarImageView.topAnchor),
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changeIdentityButton.bottomAnchor.constraint(equalTo: avatarImageView.bottomAnchor),
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changeIdentityButton.trailingAnchor.constraint(equalTo: avatarImageView.trailingAnchor),
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stackView.leadingAnchor.constraint(equalTo: avatarImageView.trailingAnchor, constant: .defaultSpacing),
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stackView.topAnchor.constraint(greaterThanOrEqualTo: guide.topAnchor),
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stackView.bottomAnchor.constraint(lessThanOrEqualTo: guide.bottomAnchor),
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textViewPlaceholder.leadingAnchor.constraint(equalTo: textView.leadingAnchor),
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textViewPlaceholder.topAnchor.constraint(equalTo: textView.topAnchor),
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textViewPlaceholder.trailingAnchor.constraint(equalTo: textView.trailingAnchor),
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removeButton.leadingAnchor.constraint(equalTo: stackView.trailingAnchor, constant: .defaultSpacing),
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removeButton.topAnchor.constraint(equalTo: guide.topAnchor),
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removeButton.trailingAnchor.constraint(equalTo: guide.trailingAnchor),
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inReplyToView.centerXAnchor.constraint(equalTo: avatarImageView.centerXAnchor),
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inReplyToView.topAnchor.constraint(equalTo: topAnchor),
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inReplyToView.bottomAnchor.constraint(equalTo: avatarImageView.topAnchor),
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hasReplyFollowingView.centerXAnchor.constraint(equalTo: avatarImageView.centerXAnchor),
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hasReplyFollowingView.topAnchor.constraint(equalTo: avatarImageView.bottomAnchor),
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hasReplyFollowingView.bottomAnchor.constraint(equalTo: bottomAnchor)
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]
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NSLayoutConstraint.activate(constraints)
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}
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func changeIdentityMenu(identities: [Identity]) -> UIMenu {
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let imageTransformer = SDImageRoundCornerTransformer(
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radius: .greatestFiniteMagnitude,
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corners: .allCorners,
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borderWidth: 0,
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borderColor: nil)
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return UIMenu(children: identities.map { identity in
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UIDeferredMenuElement { completion in
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let action = UIAction(title: identity.handle) { [weak self] _ in
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self?.parentViewModel.changeIdentity(identity)
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}
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if let image = identity.image {
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SDWebImageManager.shared.loadImage(
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with: image,
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options: [.transformAnimatedImage],
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context: [.imageTransformer: imageTransformer],
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progress: nil) { (image, _, _, _, _, _) in
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action.image = image
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completion([action])
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}
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} else {
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completion([action])
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}
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}
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})
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}
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func spoilerTextFieldEditingChanged() {
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guard let text = spoilerTextField.text else { return }
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viewModel.contentWarning = text
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if let textToSelectedRange = spoilerTextField.textToSelectedRange {
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viewModel.contentWarningTextToSelectedRange = textToSelectedRange
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}
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}
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func autocompleteSelected(_ autocompleteText: String) {
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guard let autocompleteQuery = viewModel.autocompleteQuery,
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let queryRange = viewModel.textToSelectedRange.range(of: autocompleteQuery, options: .backwards),
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let textToSelectedRangeRange = viewModel.text.range(of: viewModel.textToSelectedRange)
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else { return }
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let replaced = viewModel.textToSelectedRange.replacingOccurrences(
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of: autocompleteQuery,
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with: autocompleteText.appending(" "),
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range: queryRange)
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textView.text = viewModel.text.replacingOccurrences(
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of: viewModel.textToSelectedRange,
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with: replaced,
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range: textToSelectedRangeRange)
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textViewDidChange(textView)
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}
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func spoilerTextAutocompleteSelected(_ autocompleteText: String) {
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guard let autocompleteQuery = viewModel.contentWarningAutocompleteQuery,
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let queryRange =
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viewModel.contentWarningTextToSelectedRange.range(of: autocompleteQuery, options: .backwards),
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let textToSelectedRangeRange =
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viewModel.contentWarning.range(of: viewModel.contentWarningTextToSelectedRange)
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else { return }
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let replaced = viewModel.contentWarningTextToSelectedRange.replacingOccurrences(
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of: autocompleteQuery,
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with: autocompleteText.appending(" "),
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range: queryRange)
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spoilerTextField.text = viewModel.contentWarning.replacingOccurrences(
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of: viewModel.contentWarningTextToSelectedRange,
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with: replaced,
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range: textToSelectedRangeRange)
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spoilerTextFieldEditingChanged()
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}
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func update(attachmentUploadViewModels: [AttachmentUploadViewModel]) {
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let diff = attachmentUploadViewModels.map(\.id)
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.difference(from: attachmentUploadsStackView
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.arrangedSubviews
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.compactMap { ($0 as? AttachmentUploadView)?.id })
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for insertion in diff.insertions {
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guard case let .insert(index, id, _) = insertion,
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let attachmentUploadViewModel = attachmentUploadViewModels.first(where: { $0.id == id })
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else { continue }
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let attachmentUploadView = AttachmentUploadView(viewModel: attachmentUploadViewModel)
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attachmentUploadsStackView.insertArrangedSubview(attachmentUploadView, at: index)
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}
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for removal in diff.removals {
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guard case let .remove(_, id, _) = removal,
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let index = attachmentUploadsStackView.arrangedSubviews
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.firstIndex(where: { ($0 as? AttachmentUploadView)?.id == id })
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else { continue }
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attachmentUploadsStackView.arrangedSubviews[index].removeFromSuperview()
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}
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}
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}
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