metatext/Views/CompositionInputAccessoryView.swift

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Swift
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// Copyright © 2020 Metabolist. All rights reserved.
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import AVFoundation
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import Combine
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import Mastodon
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import UIKit
import ViewModels
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final class CompositionInputAccessoryView: UIView {
let visibilityButton = UIButton()
let addButton = UIButton()
let contentWarningButton = UIButton(type: .system)
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let tagForInputView = UUID().hashValue
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private let viewModel: CompositionViewModel
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private let parentViewModel: NewStatusViewModel
private let stackView = UIStackView()
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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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super.init(frame: .zero)
initialSetup()
}
@available(*, unavailable)
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override var intrinsicContentSize: CGSize {
stackView.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize)
}
}
private extension CompositionInputAccessoryView {
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// swiftlint:disable:next function_body_length
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func initialSetup() {
autoresizingMask = .flexibleHeight
backgroundColor = .secondarySystemFill
addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.spacing = .defaultSpacing
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var attachmentActions = [
UIAction(
title: NSLocalizedString("compose.browse", comment: ""),
image: UIImage(systemName: "ellipsis")) { [weak self] _ in
guard let self = self else { return }
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self.parentViewModel.presentDocumentPicker(viewModel: self.viewModel)
},
UIAction(
title: NSLocalizedString("compose.photo-library", comment: ""),
image: UIImage(systemName: "rectangle.on.rectangle")) { [weak self] _ in
guard let self = self else { return }
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self.parentViewModel.presentMediaPicker(viewModel: self.viewModel)
}
]
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#if !IS_SHARE_EXTENSION
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attachmentActions.insert(UIAction(
title: NSLocalizedString("compose.take-photo-or-video", comment: ""),
image: UIImage(systemName: "camera.fill")) { [weak self] _ in
guard let self = self else { return }
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self.parentViewModel.presentCamera(viewModel: self.viewModel)
},
at: 1)
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#endif
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let attachmentButton = UIButton()
stackView.addArrangedSubview(attachmentButton)
attachmentButton.setImage(
UIImage(
systemName: "paperclip",
withConfiguration: UIImage.SymbolConfiguration(scale: .medium)),
for: .normal)
attachmentButton.showsMenuAsPrimaryAction = true
attachmentButton.menu = UIMenu(children: attachmentActions)
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let pollButton = UIButton(primaryAction: UIAction { [weak self] _ in self?.viewModel.displayPoll.toggle() })
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stackView.addArrangedSubview(pollButton)
pollButton.setImage(
UIImage(
systemName: "chart.bar.xaxis",
withConfiguration: UIImage.SymbolConfiguration(scale: .medium)),
for: .normal)
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stackView.addArrangedSubview(visibilityButton)
visibilityButton.showsMenuAsPrimaryAction = true
visibilityButton.menu = UIMenu(children: Status.Visibility.allCasesExceptUnknown.reversed().map { visibility in
UIAction(
title: visibility.title ?? "",
image: UIImage(systemName: visibility.systemImageName),
discoverabilityTitle: visibility.description) { [weak self] _ in
self?.parentViewModel.visibility = visibility
}
})
stackView.addArrangedSubview(contentWarningButton)
contentWarningButton.setTitle(
NSLocalizedString("status.content-warning-abbreviation", comment: ""),
for: .normal)
contentWarningButton.addAction(
UIAction { [weak self] _ in self?.viewModel.displayContentWarning.toggle() },
for: .touchUpInside)
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let emojiButton = UIButton(primaryAction: UIAction { [weak self] _ in
guard let self = self else { return }
self.parentViewModel.presentEmojiPicker(tag: self.tagForInputView)
})
stackView.addArrangedSubview(emojiButton)
emojiButton.setImage(
UIImage(
systemName: "face.smiling",
withConfiguration: UIImage.SymbolConfiguration(scale: .medium)),
for: .normal)
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stackView.addArrangedSubview(UIView())
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let charactersLabel = UILabel()
stackView.addArrangedSubview(charactersLabel)
charactersLabel.font = .preferredFont(forTextStyle: .callout)
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stackView.addArrangedSubview(addButton)
addButton.setImage(
UIImage(
systemName: "plus.circle.fill",
withConfiguration: UIImage.SymbolConfiguration(scale: .medium)),
for: .normal)
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addButton.addAction(UIAction { [weak self] _ in
guard let self = self else { return }
self.parentViewModel.insert(after: self.viewModel)
}, for: .touchUpInside)
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viewModel.$canAddAttachment
.sink { attachmentButton.isEnabled = $0 }
.store(in: &cancellables)
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viewModel.$attachmentViewModels
.combineLatest(viewModel.$attachmentUpload)
.sink { pollButton.isEnabled = $0.isEmpty && $1 == nil }
.store(in: &cancellables)
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viewModel.$remainingCharacters.sink {
charactersLabel.text = String($0)
charactersLabel.textColor = $0 < 0 ? .systemRed : .label
}
.store(in: &cancellables)
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viewModel.$isPostable
.sink { [weak self] in self?.addButton.isEnabled = $0 }
.store(in: &cancellables)
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parentViewModel.$visibility
.sink { [weak self] in
self?.visibilityButton.setImage(UIImage(systemName: $0.systemImageName), for: .normal)
}
.store(in: &cancellables)
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for button in [attachmentButton, pollButton, visibilityButton, contentWarningButton, emojiButton, addButton] {
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button.heightAnchor.constraint(greaterThanOrEqualToConstant: .minimumButtonDimension).isActive = true
button.widthAnchor.constraint(greaterThanOrEqualToConstant: .minimumButtonDimension).isActive = true
}
NSLayoutConstraint.activate([
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stackView.leadingAnchor.constraint(equalTo: safeAreaLayoutGuide.leadingAnchor),
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stackView.topAnchor.constraint(equalTo: topAnchor),
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stackView.trailingAnchor.constraint(equalTo: safeAreaLayoutGuide.trailingAnchor),
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stackView.bottomAnchor.constraint(equalTo: bottomAnchor)
])
}
}