mastodon-app-ufficiale-ipho.../MastodonSDK/Sources/MastodonUI/View/Content/FamiliarFollowersDashboardV...

110 lines
4.4 KiB
Swift

//
// FamiliarFollowersDashboardView+ViewModel.swift
//
//
// Created by MainasuK on 2022-5-16.
//
import os.log
import UIKit
import Combine
import CoreDataStack
import MastodonCore
import MastodonMeta
import MastodonLocalization
extension FamiliarFollowersDashboardView {
public final class ViewModel: ObservableObject {
public var disposeBag = Set<AnyCancellable>()
let logger = Logger(subsystem: "FamiliarFollowersDashboardView", category: "ViewModel")
@Published var avatarURLs: [URL?] = []
@Published var names: [String] = []
@Published var emojis: MastodonContent.Emojis = [:]
@Published var backgroundColor: UIColor?
}
}
extension FamiliarFollowersDashboardView.ViewModel {
func bind(view: FamiliarFollowersDashboardView) {
Publishers.CombineLatest3(
$avatarURLs,
$backgroundColor,
UIContentSizeCategory.publisher
)
.sink { avatarURLs, backgroundColor, contentSizeCategory in
// only using first 4 items
let avatarURLs = avatarURLs.prefix(4)
view.avatarContainerView.subviews.forEach { $0.removeFromSuperview() }
let initialOffset = min(12 * 1.5, UIFontMetrics(forTextStyle: .headline).scaledValue(for: 12)) // max 1.5x
let offset = min(20 * 1.5, UIFontMetrics(forTextStyle: .headline).scaledValue(for: 20))
let dimension = min(32 * 1.5, UIFontMetrics(forTextStyle: .headline).scaledValue(for: 32))
let borderWidth = min(1.5, UIFontMetrics.default.scaledValue(for: 1))
for (i, avatarURL) in avatarURLs.enumerated() {
let avatarButton = AvatarButton()
let origin = CGPoint(x: offset * CGFloat(i), y: 0)
let size = CGSize(width: dimension, height: dimension)
avatarButton.size = size
avatarButton.frame = CGRect(origin: origin, size: size)
view.avatarContainerView.addSubview(avatarButton)
avatarButton.avatarImageView.configure(
configuration: .init(
url: avatarURL,
placeholder: .placeholder(color: .systemGray3)
)
)
avatarButton.avatarImageView.configure(
cornerConfiguration: .init(
corner: .fixed(radius: 7),
border: .init(
color: backgroundColor ?? .clear,
width: borderWidth
)
)
)
}
let avatarContainerViewWidth = initialOffset + offset * CGFloat(avatarURLs.count)
view.avatarContainerViewWidthLayoutConstraint.constant = avatarContainerViewWidth
view.avatarContainerViewHeightLayoutConstraint.constant = dimension
}
.store(in: &disposeBag)
Publishers.CombineLatest(
$names,
$emojis
)
.sink { names, emojis in
let content: String = {
guard names.count > 0 else { return " " }
let count = names.count
let firstTwoNames = names.prefix(2).joined(separator: ", ")
switch names.count {
case 1..<3:
return L10n.Scene.Familiarfollowers.followedByNames(firstTwoNames)
default:
// Note: SwiftGen generates wrong formate argv for "%1$@"
let remains = count - 2
let format = MastodonLocalization.bundle.localizedString(forKey: "plural.count.followed_by_and_mutual", value: nil, table: "Localizable")
return String(format: format, locale: .current, arguments: [firstTwoNames, remains])
}
}()
let document = MastodonContent(content: content, emojis: emojis)
do {
let metaContent = try MastodonMetaContent.convert(document: document)
view.descriptionMetaLabel.configure(content: metaContent)
} catch {
assertionFailure()
view.descriptionMetaLabel.configure(content: PlaintextMetaContent(string: content))
}
}
.store(in: &disposeBag)
}
}