forked from zelo72/mastodon-ios
109 lines
4.4 KiB
Swift
109 lines
4.4 KiB
Swift
//
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// FamiliarFollowersDashboardView+ViewModel.swift
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//
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//
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// Created by MainasuK on 2022-5-16.
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//
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import os.log
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import UIKit
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import Combine
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import CoreDataStack
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import MastodonMeta
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import MastodonLocalization
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extension FamiliarFollowersDashboardView {
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public final class ViewModel: ObservableObject {
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public var disposeBag = Set<AnyCancellable>()
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let logger = Logger(subsystem: "FamiliarFollowersDashboardView", category: "ViewModel")
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@Published var avatarURLs: [URL?] = []
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@Published var names: [String] = []
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@Published var emojis: MastodonContent.Emojis = [:]
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@Published var backgroundColor: UIColor?
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}
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}
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extension FamiliarFollowersDashboardView.ViewModel {
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func bind(view: FamiliarFollowersDashboardView) {
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Publishers.CombineLatest3(
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$avatarURLs,
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$backgroundColor,
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UIContentSizeCategory.publisher
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)
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.sink { avatarURLs, backgroundColor, contentSizeCategory in
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// only using first 4 items
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let avatarURLs = avatarURLs.prefix(4)
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view.avatarContainerView.subviews.forEach { $0.removeFromSuperview() }
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let initialOffset = min(12 * 1.5, UIFontMetrics(forTextStyle: .headline).scaledValue(for: 12)) // max 1.5x
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let offset = min(20 * 1.5, UIFontMetrics(forTextStyle: .headline).scaledValue(for: 20))
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let dimension = min(32 * 1.5, UIFontMetrics(forTextStyle: .headline).scaledValue(for: 32))
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let borderWidth = min(1.5, UIFontMetrics.default.scaledValue(for: 1))
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for (i, avatarURL) in avatarURLs.enumerated() {
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let avatarButton = AvatarButton()
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let origin = CGPoint(x: offset * CGFloat(i), y: 0)
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let size = CGSize(width: dimension, height: dimension)
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avatarButton.size = size
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avatarButton.frame = CGRect(origin: origin, size: size)
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view.avatarContainerView.addSubview(avatarButton)
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avatarButton.avatarImageView.configure(
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configuration: .init(
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url: avatarURL,
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placeholder: .placeholder(color: .systemGray3)
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)
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)
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avatarButton.avatarImageView.configure(
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cornerConfiguration: .init(
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corner: .fixed(radius: 7),
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border: .init(
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color: backgroundColor ?? .clear,
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width: borderWidth
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)
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)
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)
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}
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let avatarContainerViewWidth = initialOffset + offset * CGFloat(avatarURLs.count)
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view.avatarContainerViewWidthLayoutConstraint.constant = avatarContainerViewWidth
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view.avatarContainerViewHeightLayoutConstraint.constant = dimension
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}
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.store(in: &disposeBag)
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Publishers.CombineLatest(
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$names,
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$emojis
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)
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.sink { names, emojis in
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let content: String = {
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guard names.count > 0 else { return " " }
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let count = names.count
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let firstTwoNames = names.prefix(2).joined(separator: ", ")
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switch names.count {
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case 1..<3:
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return L10n.Scene.Familiarfollowers.followedByNames(firstTwoNames)
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default:
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// Note: SwiftGen generates wrong formate argv for "%1$@"
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let remains = count - 2
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let format = MastodonLocalization.bundle.localizedString(forKey: "plural.count.followed_by_and_mutual", value: nil, table: "Localizable")
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return String(format: format, locale: .current, arguments: [firstTwoNames, remains])
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}
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}()
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let document = MastodonContent(content: content, emojis: emojis)
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do {
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let metaContent = try MastodonMetaContent.convert(document: document)
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view.descriptionMetaLabel.configure(content: metaContent)
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} catch {
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assertionFailure()
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view.descriptionMetaLabel.configure(content: PlaintextMetaContent(string: content))
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}
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}
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.store(in: &disposeBag)
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}
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}
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