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// SPDX-License-Identifier: MIT
// Copyright © 2018 WireGuard LLC. All Rights Reserved.
import UIKit
class TunnelListCell: UITableViewCell {
var tunnel: TunnelContainer? {
didSet(value) {
// Bind to the tunnel's name
nameLabel.text = tunnel?.name ?? ""
nameObservationToken = tunnel?.observe(\.name) { [weak self] tunnel, _ in
self?.nameLabel.text = tunnel.name
}
// Bind to the tunnel's status
update(from: tunnel?.status)
statusObservationToken = tunnel?.observe(\.status) { [weak self] tunnel, _ in
self?.update(from: tunnel.status)
}
}
}
var onSwitchToggled: ((Bool) -> Void)?
let nameLabel: UILabel = {
let nameLabel = UILabel()
nameLabel.font = UIFont.preferredFont(forTextStyle: .body)
nameLabel.adjustsFontForContentSizeCategory = true
nameLabel.numberOfLines = 0
return nameLabel
}()
let busyIndicator: UIActivityIndicatorView = {
let busyIndicator = UIActivityIndicatorView(style: .gray)
busyIndicator.hidesWhenStopped = true
return busyIndicator
}()
let statusSwitch = UISwitch()
private var statusObservationToken: AnyObject?
private var nameObservationToken: AnyObject?
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(statusSwitch)
statusSwitch.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
statusSwitch.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
contentView.rightAnchor.constraint(equalTo: statusSwitch.rightAnchor)
])
contentView.addSubview(busyIndicator)
busyIndicator.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
busyIndicator.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
statusSwitch.leftAnchor.constraint(equalToSystemSpacingAfter: busyIndicator.rightAnchor, multiplier: 1)
])
contentView.addSubview(nameLabel)
nameLabel.translatesAutoresizingMaskIntoConstraints = false
nameLabel.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
let bottomAnchorConstraint = contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: nameLabel.bottomAnchor, multiplier: 1)
bottomAnchorConstraint.priority = .defaultLow
NSLayoutConstraint.activate([
nameLabel.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 1),
nameLabel.leftAnchor.constraint(equalToSystemSpacingAfter: contentView.layoutMarginsGuide.leftAnchor, multiplier: 1),
busyIndicator.leftAnchor.constraint(equalToSystemSpacingAfter: nameLabel.rightAnchor, multiplier: 1),
bottomAnchorConstraint
])
accessoryType = .disclosureIndicator
statusSwitch.addTarget(self, action: #selector(switchToggled), for: .valueChanged)
}
@objc func switchToggled() {
onSwitchToggled?(statusSwitch.isOn)
}
private func update(from status: TunnelStatus?) {
guard let status = status else {
reset()
return
}
DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(200)) { [weak statusSwitch, weak busyIndicator] in
guard let statusSwitch = statusSwitch, let busyIndicator = busyIndicator else { return }
statusSwitch.isOn = !(status == .deactivating || status == .inactive)
statusSwitch.isUserInteractionEnabled = (status == .inactive || status == .active)
if status == .inactive || status == .active {
busyIndicator.stopAnimating()
} else {
busyIndicator.startAnimating()
}
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func reset() {
statusSwitch.isOn = false
statusSwitch.isUserInteractionEnabled = false
busyIndicator.stopAnimating()
}
override func prepareForReuse() {
super.prepareForReuse()
reset()
}
}
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