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This commit is contained in:
Justin Mazzocchi 2021-01-03 17:15:50 -08:00
parent a4c0589a07
commit f2c06e9b60
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GPG Key ID: E223E6937AAFB01C
2 changed files with 34 additions and 6 deletions

View File

@ -16,6 +16,7 @@ public final class CompositionViewModel: ObservableObject, Identifiable {
@Published public private(set) var isPostable = false @Published public private(set) var isPostable = false
@Published public private(set) var canAddAttachment = true @Published public private(set) var canAddAttachment = true
@Published public private(set) var canAddNonImageAttachment = true @Published public private(set) var canAddNonImageAttachment = true
@Published public private(set) var remainingCharacters = CompositionViewModel.maxCharacters
private var attachmentUploadCancellable: AnyCancellable? private var attachmentUploadCancellable: AnyCancellable?
@ -32,10 +33,20 @@ public final class CompositionViewModel: ObservableObject, Identifiable {
.map { $0.count < Self.maxAttachmentCount && $1 == nil } .map { $0.count < Self.maxAttachmentCount && $1 == nil }
.assign(to: &$canAddAttachment) .assign(to: &$canAddAttachment)
$attachmentViewModels.map(\.isEmpty).assign(to: &$canAddNonImageAttachment) $attachmentViewModels.map(\.isEmpty).assign(to: &$canAddNonImageAttachment)
$text.map {
let tokens = $0.components(separatedBy: " ")
return tokens.map(\.countShorteningIfURL).reduce(tokens.count - 1, +)
}
.combineLatest($displayContentWarning, $contentWarning)
.map { Self.maxCharacters - ($0 + ($1 ? $2.count : 0)) }
.assign(to: &$remainingCharacters)
} }
} }
public extension CompositionViewModel { public extension CompositionViewModel {
static let maxCharacters = 500
typealias Id = UUID typealias Id = UUID
enum Event { enum Event {
@ -93,3 +104,9 @@ extension CompositionViewModel {
private extension CompositionViewModel { private extension CompositionViewModel {
static let maxAttachmentCount = 4 static let maxAttachmentCount = 4
} }
private extension String {
static let urlCharacterCount = 23
var countShorteningIfURL: Int { starts(with: "http://") || starts(with: "https://") ? Self.urlCharacterCount : count }
}

View File

@ -109,6 +109,12 @@ private extension CompositionInputAccessoryView {
stackView.addArrangedSubview(UIView()) stackView.addArrangedSubview(UIView())
let charactersLabel = UILabel()
stackView.addArrangedSubview(charactersLabel)
charactersLabel.font = .preferredFont(forTextStyle: .callout)
stackView.addArrangedSubview(addButton) stackView.addArrangedSubview(addButton)
addButton.setImage( addButton.setImage(
UIImage( UIImage(
@ -121,13 +127,18 @@ private extension CompositionInputAccessoryView {
self.parentViewModel.insert(after: self.viewModel) self.parentViewModel.insert(after: self.viewModel)
}, for: .touchUpInside) }, for: .touchUpInside)
viewModel.$canAddAttachment viewModel.$canAddAttachment.sink {
.sink {
mediaButton.isEnabled = $0 mediaButton.isEnabled = $0
cameraButton.isEnabled = $0 cameraButton.isEnabled = $0
} }
.store(in: &cancellables) .store(in: &cancellables)
viewModel.$remainingCharacters.sink {
charactersLabel.text = String($0)
charactersLabel.textColor = $0 < 0 ? .systemRed : .label
}
.store(in: &cancellables)
viewModel.$isPostable viewModel.$isPostable
.sink { [weak self] in self?.addButton.isEnabled = $0 } .sink { [weak self] in self?.addButton.isEnabled = $0 }
.store(in: &cancellables) .store(in: &cancellables)