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|
// SPDX-License-Identifier: MIT
// Copyright © 2018 WireGuard LLC. All Rights Reserved.
import UIKit
protocol TunnelEditTableViewControllerDelegate: class {
func tunnelSaved(tunnel: TunnelContainer)
func tunnelEditingCancelled()
}
// MARK: TunnelEditTableViewController
class TunnelEditTableViewController: UITableViewController {
private enum Section {
case interface
case peer(_ peer: TunnelViewModel.PeerData)
case addPeer
case onDemand
}
weak var delegate: TunnelEditTableViewControllerDelegate?
let interfaceFieldsBySection: [[TunnelViewModel.InterfaceField]] = [
[.name],
[.privateKey, .publicKey, .generateKeyPair],
[.addresses, .listenPort, .mtu, .dns]
]
let peerFields: [TunnelViewModel.PeerField] = [
.publicKey, .preSharedKey, .endpoint,
.allowedIPs, .excludePrivateIPs, .persistentKeepAlive,
.deletePeer
]
let activateOnDemandOptions: [ActivateOnDemandOption] = [
.useOnDemandOverWiFiOrCellular,
.useOnDemandOverWiFiOnly,
.useOnDemandOverCellularOnly
]
let tunnelsManager: TunnelsManager
let tunnel: TunnelContainer?
let tunnelViewModel: TunnelViewModel
var activateOnDemandSetting: ActivateOnDemandSetting
private var sections = [Section]()
init(tunnelsManager: TunnelsManager, tunnel: TunnelContainer) {
// Use this initializer to edit an existing tunnel.
self.tunnelsManager = tunnelsManager
self.tunnel = tunnel
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration())
activateOnDemandSetting = tunnel.activateOnDemandSetting()
super.init(style: .grouped)
loadSections()
}
init(tunnelsManager: TunnelsManager, tunnelConfiguration: TunnelConfiguration?) {
// Use this initializer to create a new tunnel.
// If tunnelConfiguration is passed, data will be prepopulated from that configuration.
self.tunnelsManager = tunnelsManager
tunnel = nil
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnelConfiguration)
activateOnDemandSetting = ActivateOnDemandSetting.defaultSetting
super.init(style: .grouped)
loadSections()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
super.viewDidLoad()
self.title = tunnel == nil ? "New configuration" : "Edit configuration"
self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .save, target: self, action: #selector(saveTapped))
self.navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(cancelTapped))
self.tableView.estimatedRowHeight = 44
self.tableView.rowHeight = UITableView.automaticDimension
self.tableView.register(KeyValueCell.self)
self.tableView.register(ReadOnlyKeyValueCell.self)
self.tableView.register(ButtonCell.self)
self.tableView.register(SwitchCell.self)
self.tableView.register(SelectionListCell.self)
}
private func loadSections() {
sections.removeAll()
interfaceFieldsBySection.forEach { _ in sections.append(.interface) }
tunnelViewModel.peersData.forEach { sections.append(.peer($0)) }
sections.append(.addPeer)
sections.append(.onDemand)
}
@objc func saveTapped() {
self.tableView.endEditing(false)
let tunnelSaveResult = tunnelViewModel.save()
switch tunnelSaveResult {
case .error(let errorMessage):
let erroringConfiguration = (tunnelViewModel.interfaceData.validatedConfiguration == nil) ? "Interface" : "Peer"
ErrorPresenter.showErrorAlert(title: "Invalid \(erroringConfiguration)", message: errorMessage, from: self)
self.tableView.reloadData() // Highlight erroring fields
case .saved(let tunnelConfiguration):
if let tunnel = tunnel {
// We're modifying an existing tunnel
tunnelsManager.modify(tunnel: tunnel,
tunnelConfiguration: tunnelConfiguration,
activateOnDemandSetting: activateOnDemandSetting) { [weak self] error in
if let error = error {
ErrorPresenter.showErrorAlert(error: error, from: self)
} else {
self?.dismiss(animated: true, completion: nil)
self?.delegate?.tunnelSaved(tunnel: tunnel)
}
}
} else {
// We're adding a new tunnel
tunnelsManager.add(tunnelConfiguration: tunnelConfiguration,
activateOnDemandSetting: activateOnDemandSetting) { [weak self] result in
if let error = result.error {
ErrorPresenter.showErrorAlert(error: error, from: self)
} else {
let tunnel: TunnelContainer = result.value!
self?.dismiss(animated: true, completion: nil)
self?.delegate?.tunnelSaved(tunnel: tunnel)
}
}
}
}
}
@objc func cancelTapped() {
dismiss(animated: true, completion: nil)
self.delegate?.tunnelEditingCancelled()
}
}
// MARK: UITableViewDataSource
extension TunnelEditTableViewController {
override func numberOfSections(in tableView: UITableView) -> Int {
return sections.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
switch sections[section] {
case .interface:
return interfaceFieldsBySection[section].count
case .peer(let peerData):
let peerFieldsToShow = peerData.shouldAllowExcludePrivateIPsControl ? peerFields : peerFields.filter { $0 != .excludePrivateIPs }
return peerFieldsToShow.count
case .addPeer:
return 1
case .onDemand:
if activateOnDemandSetting.isActivateOnDemandEnabled {
return 4
} else {
return 1
}
}
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
switch sections[section] {
case .interface:
return section == 0 ? "Interface" : nil
case .peer:
return "Peer"
case .addPeer:
return nil
case .onDemand:
return "On-Demand Activation"
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
switch sections[indexPath.section] {
case .interface:
return interfaceFieldCell(for: tableView, at: indexPath)
case .peer(let peerData):
return peerCell(for: tableView, at: indexPath, with: peerData)
case .addPeer:
return addPeerCell(for: tableView, at: indexPath)
case .onDemand:
return onDemandCell(for: tableView, at: indexPath)
}
}
private func interfaceFieldCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
let field = interfaceFieldsBySection[indexPath.section][indexPath.row]
switch field {
case .generateKeyPair:
return generateKeyPairCell(for: tableView, at: indexPath, with: field)
case .publicKey:
return publicKeyCell(for: tableView, at: indexPath, with: field)
default:
return interfaceFieldKeyValueCell(for: tableView, at: indexPath, with: field)
}
}
private func generateKeyPairCell(for tableView: UITableView, at indexPath: IndexPath, with field: TunnelViewModel.InterfaceField) -> UITableViewCell {
let cell: ButtonCell = tableView.dequeueReusableCell(for: indexPath)
cell.buttonText = field.rawValue
cell.onTapped = { [weak self] in
guard let self = self else { return }
self.tunnelViewModel.interfaceData[.privateKey] = Curve25519.generatePrivateKey().base64EncodedString()
if let privateKeyRow = self.interfaceFieldsBySection[indexPath.section].firstIndex(of: .privateKey),
let publicKeyRow = self.interfaceFieldsBySection[indexPath.section].firstIndex(of: .publicKey) {
let privateKeyIndex = IndexPath(row: privateKeyRow, section: indexPath.section)
let publicKeyIndex = IndexPath(row: publicKeyRow, section: indexPath.section)
self.tableView.reloadRows(at: [privateKeyIndex, publicKeyIndex], with: .fade)
}
}
return cell
}
private func publicKeyCell(for tableView: UITableView, at indexPath: IndexPath, with field: TunnelViewModel.InterfaceField) -> UITableViewCell {
let cell: ReadOnlyKeyValueCell = tableView.dequeueReusableCell(for: indexPath)
cell.key = field.rawValue
cell.value = tunnelViewModel.interfaceData[field]
return cell
}
private func interfaceFieldKeyValueCell(for tableView: UITableView, at indexPath: IndexPath, with field: TunnelViewModel.InterfaceField) -> UITableViewCell {
let cell: KeyValueCell = tableView.dequeueReusableCell(for: indexPath)
cell.key = field.rawValue
switch field {
case .name, .privateKey:
cell.placeholderText = "Required"
cell.keyboardType = .default
case .addresses, .dns:
cell.placeholderText = "Optional"
cell.keyboardType = .numbersAndPunctuation
case .listenPort, .mtu:
cell.placeholderText = "Automatic"
cell.keyboardType = .numberPad
case .publicKey, .generateKeyPair:
cell.keyboardType = .default
}
cell.isValueValid = (!tunnelViewModel.interfaceData.fieldsWithError.contains(field))
// Bind values to view model
cell.value = tunnelViewModel.interfaceData[field]
if field == .dns { // While editing DNS, you might directly set exclude private IPs
cell.onValueChanged = nil
cell.onValueBeingEdited = { [weak self] value in
self?.tunnelViewModel.interfaceData[field] = value
}
} else {
cell.onValueChanged = { [weak self] value in
self?.tunnelViewModel.interfaceData[field] = value
}
cell.onValueBeingEdited = nil
}
// Compute public key live
if field == .privateKey {
cell.onValueBeingEdited = { [weak self] value in
guard let self = self else { return }
self.tunnelViewModel.interfaceData[.privateKey] = value
if let row = self.interfaceFieldsBySection[indexPath.section].firstIndex(of: .publicKey) {
self.tableView.reloadRows(at: [IndexPath(row: row, section: indexPath.section)], with: .none)
}
}
} else {
cell.onValueBeingEdited = nil
}
return cell
}
private func peerCell(for tableView: UITableView, at indexPath: IndexPath, with peerData: TunnelViewModel.PeerData) -> UITableViewCell {
let peerFieldsToShow = peerData.shouldAllowExcludePrivateIPsControl ? peerFields : peerFields.filter { $0 != .excludePrivateIPs }
let field = peerFieldsToShow[indexPath.row]
switch field {
case .deletePeer:
return deletePeerCell(for: tableView, at: indexPath, peerData: peerData, field: field)
case .excludePrivateIPs:
return excludePrivateIPsCell(for: tableView, at: indexPath, peerData: peerData, field: field)
default:
return peerFieldKeyValueCell(for: tableView, at: indexPath, peerData: peerData, field: field)
}
}
private func deletePeerCell(for tableView: UITableView, at indexPath: IndexPath, peerData: TunnelViewModel.PeerData, field: TunnelViewModel.PeerField) -> UITableViewCell {
let cell: ButtonCell = tableView.dequeueReusableCell(for: indexPath)
cell.buttonText = field.rawValue
cell.hasDestructiveAction = true
cell.onTapped = { [weak self, weak peerData] in
guard let peerData = peerData else { return }
guard let self = self else { return }
self.showConfirmationAlert(message: "Delete this peer?", buttonTitle: "Delete", from: cell) { [weak self] in
guard let self = self else { return }
let removedSectionIndices = self.deletePeer(peer: peerData)
let shouldShowExcludePrivateIPs = (self.tunnelViewModel.peersData.count == 1 && self.tunnelViewModel.peersData[0].shouldAllowExcludePrivateIPsControl)
tableView.performBatchUpdates({
self.tableView.deleteSections(removedSectionIndices, with: .fade)
if shouldShowExcludePrivateIPs {
if let row = self.peerFields.firstIndex(of: .excludePrivateIPs) {
let rowIndexPath = IndexPath(row: row, section: self.interfaceFieldsBySection.count /* First peer section */)
self.tableView.insertRows(at: [rowIndexPath], with: .fade)
}
}
})
}
}
return cell
}
private func excludePrivateIPsCell(for tableView: UITableView, at indexPath: IndexPath, peerData: TunnelViewModel.PeerData, field: TunnelViewModel.PeerField) -> UITableViewCell {
let cell: SwitchCell = tableView.dequeueReusableCell(for: indexPath)
cell.message = field.rawValue
cell.isEnabled = peerData.shouldAllowExcludePrivateIPsControl
cell.isOn = peerData.excludePrivateIPsValue
cell.onSwitchToggled = { [weak self] isOn in
guard let self = self else { return }
peerData.excludePrivateIPsValueChanged(isOn: isOn, dnsServers: self.tunnelViewModel.interfaceData[.dns])
if let row = self.peerFields.firstIndex(of: .allowedIPs) {
self.tableView.reloadRows(at: [IndexPath(row: row, section: indexPath.section)], with: .none)
}
}
return cell
}
private func peerFieldKeyValueCell(for tableView: UITableView, at indexPath: IndexPath, peerData: TunnelViewModel.PeerData, field: TunnelViewModel.PeerField) -> UITableViewCell {
let cell: KeyValueCell = tableView.dequeueReusableCell(for: indexPath)
cell.key = field.rawValue
switch field {
case .publicKey:
cell.placeholderText = "Required"
cell.keyboardType = .default
case .preSharedKey, .endpoint:
cell.placeholderText = "Optional"
cell.keyboardType = .default
case .allowedIPs:
cell.placeholderText = "Optional"
cell.keyboardType = .numbersAndPunctuation
case .persistentKeepAlive:
cell.placeholderText = "Off"
cell.keyboardType = .numberPad
case .excludePrivateIPs, .deletePeer:
cell.keyboardType = .default
}
cell.isValueValid = !peerData.fieldsWithError.contains(field)
cell.value = peerData[field]
if field == .allowedIPs {
cell.onValueBeingEdited = { [weak self, weak peerData] value in
guard let self = self, let peerData = peerData else { return }
let oldValue = peerData.shouldAllowExcludePrivateIPsControl
peerData[.allowedIPs] = value
if oldValue != peerData.shouldAllowExcludePrivateIPsControl {
if let row = self.peerFields.firstIndex(of: .excludePrivateIPs) {
if peerData.shouldAllowExcludePrivateIPsControl {
self.tableView.insertRows(at: [IndexPath(row: row, section: indexPath.section)], with: .fade)
} else {
self.tableView.deleteRows(at: [IndexPath(row: row, section: indexPath.section)], with: .fade)
}
}
}
}
} else {
cell.onValueChanged = { [weak peerData] value in
peerData?[field] = value
}
}
return cell
}
private func addPeerCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
let cell: ButtonCell = tableView.dequeueReusableCell(for: indexPath)
cell.buttonText = "Add peer"
cell.onTapped = { [weak self] in
guard let self = self else { return }
let shouldHideExcludePrivateIPs = (self.tunnelViewModel.peersData.count == 1 && self.tunnelViewModel.peersData[0].shouldAllowExcludePrivateIPsControl)
let addedSectionIndices = self.appendEmptyPeer()
tableView.performBatchUpdates({
tableView.insertSections(addedSectionIndices, with: .fade)
if shouldHideExcludePrivateIPs {
if let row = self.peerFields.firstIndex(of: .excludePrivateIPs) {
let rowIndexPath = IndexPath(row: row, section: self.interfaceFieldsBySection.count /* First peer section */)
self.tableView.deleteRows(at: [rowIndexPath], with: .fade)
}
}
}, completion: nil)
}
return cell
}
private func onDemandCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
if indexPath.row == 0 {
let cell: SwitchCell = tableView.dequeueReusableCell(for: indexPath)
cell.message = "Activate on demand"
cell.isOn = activateOnDemandSetting.isActivateOnDemandEnabled
cell.onSwitchToggled = { [weak self] isOn in
guard let self = self else { return }
let indexPaths = (1 ..< 4).map { IndexPath(row: $0, section: indexPath.section) }
if isOn {
self.activateOnDemandSetting.isActivateOnDemandEnabled = true
if self.activateOnDemandSetting.activateOnDemandOption == .none {
self.activateOnDemandSetting.activateOnDemandOption = TunnelViewModel.defaultActivateOnDemandOption()
}
self.loadSections()
self.tableView.insertRows(at: indexPaths, with: .fade)
} else {
self.activateOnDemandSetting.isActivateOnDemandEnabled = false
self.loadSections()
self.tableView.deleteRows(at: indexPaths, with: .fade)
}
}
return cell
} else {
let cell: SelectionListCell = tableView.dequeueReusableCell(for: indexPath)
let rowOption = activateOnDemandOptions[indexPath.row - 1]
let selectedOption = activateOnDemandSetting.activateOnDemandOption
assert(selectedOption != .none)
cell.message = TunnelViewModel.activateOnDemandOptionText(for: rowOption)
cell.isChecked = (selectedOption == rowOption)
return cell
}
}
func appendEmptyPeer() -> IndexSet {
tunnelViewModel.appendEmptyPeer()
loadSections()
let addedPeerIndex = tunnelViewModel.peersData.count - 1
return IndexSet(integer: interfaceFieldsBySection.count + addedPeerIndex)
}
func deletePeer(peer: TunnelViewModel.PeerData) -> IndexSet {
tunnelViewModel.deletePeer(peer: peer)
loadSections()
return IndexSet(integer: interfaceFieldsBySection.count + peer.index)
}
func showConfirmationAlert(message: String, buttonTitle: String, from sourceView: UIView, onConfirmed: @escaping (() -> Void)) {
let destroyAction = UIAlertAction(title: buttonTitle, style: .destructive) { _ in
onConfirmed()
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel)
let alert = UIAlertController(title: "", message: message, preferredStyle: .actionSheet)
alert.addAction(destroyAction)
alert.addAction(cancelAction)
// popoverPresentationController will be nil on iPhone and non-nil on iPad
alert.popoverPresentationController?.sourceView = sourceView
alert.popoverPresentationController?.sourceRect = sourceView.bounds
self.present(alert, animated: true, completion: nil)
}
}
// MARK: UITableViewDelegate
extension TunnelEditTableViewController {
override func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
if case .onDemand = sections[indexPath.section], indexPath.row > 0 {
return indexPath
} else {
return nil
}
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
switch sections[indexPath.section] {
case .onDemand:
let option = activateOnDemandOptions[indexPath.row - 1]
assert(option != .none)
activateOnDemandSetting.activateOnDemandOption = option
let indexPaths = (1 ..< 4).map { IndexPath(row: $0, section: indexPath.section) }
UIView.performWithoutAnimation {
tableView.reloadRows(at: indexPaths, with: .none)
}
default:
assertionFailure()
}
}
}
private class KeyValueCell: UITableViewCell {
var key: String {
get { return keyLabel.text ?? "" }
set(value) {keyLabel.text = value }
}
var value: String {
get { return valueTextField.text ?? "" }
set(value) { valueTextField.text = value }
}
var placeholderText: String {
get { return valueTextField.placeholder ?? "" }
set(value) { valueTextField.placeholder = value }
}
var isValueValid: Bool = true {
didSet {
if isValueValid {
keyLabel.textColor = UIColor.black
} else {
keyLabel.textColor = UIColor.red
}
}
}
var keyboardType: UIKeyboardType {
get { return valueTextField.keyboardType }
set(value) { valueTextField.keyboardType = value }
}
var onValueChanged: ((String) -> Void)?
var onValueBeingEdited: ((String) -> Void)?
let keyLabel: UILabel
let valueTextField: UITextField
var isStackedHorizontally: Bool = false
var isStackedVertically: Bool = false
var contentSizeBasedConstraints = [NSLayoutConstraint]()
private var textFieldValueOnBeginEditing: String = ""
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
keyLabel = UILabel()
keyLabel.font = UIFont.preferredFont(forTextStyle: .body)
keyLabel.adjustsFontForContentSizeCategory = true
valueTextField = UITextField()
valueTextField.font = UIFont.preferredFont(forTextStyle: .body)
valueTextField.adjustsFontForContentSizeCategory = true
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(keyLabel)
keyLabel.translatesAutoresizingMaskIntoConstraints = false
keyLabel.textAlignment = .right
let widthRatioConstraint = NSLayoutConstraint(item: keyLabel, attribute: .width,
relatedBy: .equal,
toItem: self, attribute: .width,
multiplier: 0.4, constant: 0)
// The "Persistent Keepalive" key doesn't fit into 0.4 * width on the iPhone SE,
// so set a CR priority > the 0.4-constraint's priority.
widthRatioConstraint.priority = .defaultHigh + 1
keyLabel.setContentCompressionResistancePriority(.defaultHigh + 2, for: .horizontal)
NSLayoutConstraint.activate([
keyLabel.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
keyLabel.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5),
widthRatioConstraint
])
contentView.addSubview(valueTextField)
valueTextField.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
valueTextField.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor),
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: valueTextField.bottomAnchor, multiplier: 0.5)
])
valueTextField.delegate = self
valueTextField.autocapitalizationType = .none
valueTextField.autocorrectionType = .no
valueTextField.spellCheckingType = .no
configureForContentSize()
}
func configureForContentSize() {
var constraints = [NSLayoutConstraint]()
if self.traitCollection.preferredContentSizeCategory.isAccessibilityCategory {
// Stack vertically
if !isStackedVertically {
constraints = [
valueTextField.topAnchor.constraint(equalToSystemSpacingBelow: keyLabel.bottomAnchor, multiplier: 0.5),
valueTextField.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
keyLabel.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor)
]
isStackedVertically = true
isStackedHorizontally = false
}
} else {
// Stack horizontally
if !isStackedHorizontally {
constraints = [
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: keyLabel.bottomAnchor, multiplier: 0.5),
valueTextField.leftAnchor.constraint(equalToSystemSpacingAfter: keyLabel.rightAnchor, multiplier: 1),
valueTextField.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5)
]
isStackedHorizontally = true
isStackedVertically = false
}
}
if !constraints.isEmpty {
NSLayoutConstraint.deactivate(self.contentSizeBasedConstraints)
NSLayoutConstraint.activate(constraints)
self.contentSizeBasedConstraints = constraints
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
key = ""
value = ""
placeholderText = ""
isValueValid = true
keyboardType = .default
onValueChanged = nil
onValueBeingEdited = nil
configureForContentSize()
}
}
extension KeyValueCell: UITextFieldDelegate {
func textFieldDidBeginEditing(_ textField: UITextField) {
textFieldValueOnBeginEditing = textField.text ?? ""
isValueValid = true
}
func textFieldDidEndEditing(_ textField: UITextField) {
let isModified = (textField.text ?? "" != textFieldValueOnBeginEditing)
guard isModified else { return }
if let onValueChanged = onValueChanged {
onValueChanged(textField.text ?? "")
}
}
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
if let onValueBeingEdited = onValueBeingEdited {
let modifiedText = ((textField.text ?? "") as NSString).replacingCharacters(in: range, with: string)
onValueBeingEdited(modifiedText)
}
return true
}
}
private class ReadOnlyKeyValueCell: CopyableLabelTableViewCell {
var key: String {
get { return keyLabel.text ?? "" }
set(value) {keyLabel.text = value }
}
var value: String {
get { return valueLabel.text }
set(value) { valueLabel.text = value }
}
let keyLabel: UILabel
let valueLabel: ScrollableLabel
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
keyLabel = UILabel()
keyLabel.font = UIFont.preferredFont(forTextStyle: .body)
keyLabel.adjustsFontForContentSizeCategory = true
valueLabel = ScrollableLabel()
valueLabel.label.font = UIFont.preferredFont(forTextStyle: .body)
valueLabel.label.adjustsFontForContentSizeCategory = true
super.init(style: style, reuseIdentifier: reuseIdentifier)
keyLabel.textColor = UIColor.gray
valueLabel.textColor = UIColor.gray
contentView.addSubview(keyLabel)
keyLabel.translatesAutoresizingMaskIntoConstraints = false
keyLabel.textAlignment = .right
let widthRatioConstraint = NSLayoutConstraint(item: keyLabel, attribute: .width,
relatedBy: .equal,
toItem: self, attribute: .width,
multiplier: 0.4, constant: 0)
// In case the key doesn't fit into 0.4 * width,
// so set a CR priority > the 0.4-constraint's priority.
widthRatioConstraint.priority = .defaultHigh + 1
keyLabel.setContentCompressionResistancePriority(.defaultHigh + 2, for: .horizontal)
NSLayoutConstraint.activate([
keyLabel.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
keyLabel.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
widthRatioConstraint
])
contentView.addSubview(valueLabel)
valueLabel.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
valueLabel.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
valueLabel.leftAnchor.constraint(equalToSystemSpacingAfter: keyLabel.rightAnchor, multiplier: 1),
valueLabel.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor)
])
}
override var textToCopy: String? {
return self.valueLabel.text
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
key = ""
value = ""
}
}
private class ButtonCell: UITableViewCell {
var buttonText: String {
get { return button.title(for: .normal) ?? "" }
set(value) { button.setTitle(value, for: .normal) }
}
var hasDestructiveAction: Bool {
get { return button.tintColor == UIColor.red }
set(value) { button.tintColor = value ? UIColor.red : buttonStandardTintColor }
}
var onTapped: (() -> Void)?
let button: UIButton
var buttonStandardTintColor: UIColor
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
button = UIButton(type: .system)
button.titleLabel?.font = UIFont.preferredFont(forTextStyle: .body)
button.titleLabel?.adjustsFontForContentSizeCategory = true
buttonStandardTintColor = button.tintColor
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(button)
button.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
button.topAnchor.constraint(equalTo: contentView.layoutMarginsGuide.topAnchor),
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalTo: button.bottomAnchor),
button.centerXAnchor.constraint(equalTo: contentView.centerXAnchor)
])
button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
}
@objc func buttonTapped() {
onTapped?()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
buttonText = ""
onTapped = nil
hasDestructiveAction = false
}
}
private class SwitchCell: UITableViewCell {
var message: String {
get { return textLabel?.text ?? "" }
set(value) { textLabel!.text = value }
}
var isOn: Bool {
get { return switchView.isOn }
set(value) { switchView.isOn = value }
}
var isEnabled: Bool {
get { return switchView.isEnabled }
set(value) {
switchView.isEnabled = value
textLabel?.textColor = value ? UIColor.black : UIColor.gray
}
}
var onSwitchToggled: ((Bool) -> Void)?
let switchView: UISwitch
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
switchView = UISwitch()
super.init(style: .default, reuseIdentifier: reuseIdentifier)
accessoryView = switchView
switchView.addTarget(self, action: #selector(switchToggled), for: .valueChanged)
}
@objc func switchToggled() {
onSwitchToggled?(switchView.isOn)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
message = ""
isOn = false
}
}
private class SelectionListCell: UITableViewCell {
var message: String {
get { return textLabel?.text ?? "" }
set(value) { textLabel!.text = value }
}
var isChecked: Bool {
didSet {
accessoryType = isChecked ? .checkmark : .none
}
}
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
isChecked = false
super.init(style: .default, reuseIdentifier: reuseIdentifier)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
message = ""
isChecked = false
}
}
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