mastodon-ios/Mastodon/Scene/Share/View/Content/TimelineHeaderView.swift

131 lines
4.5 KiB
Swift

//
// TimelineHeaderView.swift
// Mastodon
//
// Created by MainasuK Cirno on 2021-4-6.
//
import UIKit
final class TimelineHeaderView: UIView {
let iconImageView: UIImageView = {
let imageView = UIImageView()
imageView.tintColor = Asset.Colors.Label.secondary.color
return imageView
}()
let messageLabel: UILabel = {
let label = UILabel()
label.font = .systemFont(ofSize: 17)
label.textAlignment = .center
label.textColor = Asset.Colors.Label.secondary.color
label.text = "info"
label.numberOfLines = 0
return label
}()
override init(frame: CGRect) {
super.init(frame: frame)
_init()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
_init()
}
}
extension TimelineHeaderView {
private func _init() {
backgroundColor = .clear
let topPaddingView = UIView()
topPaddingView.translatesAutoresizingMaskIntoConstraints = false
addSubview(topPaddingView)
NSLayoutConstraint.activate([
topPaddingView.topAnchor.constraint(equalTo: topAnchor),
topPaddingView.leadingAnchor.constraint(equalTo: leadingAnchor),
topPaddingView.trailingAnchor.constraint(equalTo: trailingAnchor),
])
let containerStackView = UIStackView()
containerStackView.axis = .vertical
containerStackView.alignment = .center
containerStackView.distribution = .fill
containerStackView.spacing = 16
containerStackView.translatesAutoresizingMaskIntoConstraints = false
addSubview(containerStackView)
NSLayoutConstraint.activate([
containerStackView.topAnchor.constraint(equalTo: topPaddingView.bottomAnchor),
containerStackView.leadingAnchor.constraint(equalTo: leadingAnchor),
containerStackView.trailingAnchor.constraint(equalTo: trailingAnchor),
])
containerStackView.addArrangedSubview(iconImageView)
containerStackView.addArrangedSubview(messageLabel)
let bottomPaddingView = UIView()
bottomPaddingView.translatesAutoresizingMaskIntoConstraints = false
addSubview(bottomPaddingView)
NSLayoutConstraint.activate([
bottomPaddingView.topAnchor.constraint(equalTo: containerStackView.bottomAnchor),
bottomPaddingView.leadingAnchor.constraint(equalTo: leadingAnchor),
bottomPaddingView.trailingAnchor.constraint(equalTo: trailingAnchor),
bottomPaddingView.bottomAnchor.constraint(equalTo: bottomAnchor),
])
NSLayoutConstraint.activate([
topPaddingView.heightAnchor.constraint(equalToConstant: 100).priority(.defaultHigh),
bottomPaddingView.heightAnchor.constraint(equalTo: topPaddingView.heightAnchor, multiplier: 1.0),
])
}
}
extension Item.EmptyStateHeaderAttribute.Reason {
var iconImage: UIImage? {
switch self {
case .noStatusFound, .blocking, .blocked:
return UIImage(systemName: "nosign", withConfiguration: UIImage.SymbolConfiguration(pointSize: 64, weight: .bold))!
case .suspended:
return UIImage(systemName: "person.crop.circle.badge.xmark", withConfiguration: UIImage.SymbolConfiguration(pointSize: 64, weight: .bold))!
}
}
var message: String {
switch self {
case .noStatusFound:
return L10n.Common.Controls.Timeline.Header.noStatusFound
case .blocking:
return L10n.Common.Controls.Timeline.Header.blockingWarning
case .blocked:
return L10n.Common.Controls.Timeline.Header.blockedWarning
case .suspended(let name):
if let name = name {
return L10n.Common.Controls.Timeline.Header.userSuspendedWarning(name)
} else {
return L10n.Common.Controls.Timeline.Header.suspendedWarning
}
}
}
}
#if DEBUG && canImport(SwiftUI)
import SwiftUI
struct TimelineHeaderView_Previews: PreviewProvider {
static var previews: some View {
Group {
UIViewPreview(width: 375) {
let headerView = TimelineHeaderView()
headerView.iconImageView.image = Item.EmptyStateHeaderAttribute.Reason.blocking.iconImage
headerView.messageLabel.text = Item.EmptyStateHeaderAttribute.Reason.blocking.message
return headerView
}
.previewLayout(.fixed(width: 375, height: 400))
}
}
}
#endif