Roopesh Chander
485 lines
18 KiB
Swift
485 lines
18 KiB
Swift
// SPDX-License-Identifier: MIT
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// Copyright © 2018 WireGuard LLC. All Rights Reserved.
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import UIKit
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// MARK: TunnelDetailTableViewController
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class TunnelDetailTableViewController: UITableViewController {
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private enum Section {
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case status
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case interface
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case peer(_ peer: TunnelViewModel.PeerData)
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case onDemand
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case delete
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}
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let interfaceFields: [TunnelViewModel.InterfaceField] = [
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.name, .publicKey, .addresses,
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.listenPort, .mtu, .dns
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]
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let peerFields: [TunnelViewModel.PeerField] = [
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.publicKey, .preSharedKey, .endpoint,
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.allowedIPs, .persistentKeepAlive
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]
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let tunnelsManager: TunnelsManager
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let tunnel: TunnelContainer
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var tunnelViewModel: TunnelViewModel
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private var sections = [Section]()
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init(tunnelsManager: TunnelsManager, tunnel: TunnelContainer) {
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self.tunnelsManager = tunnelsManager
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self.tunnel = tunnel
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tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration())
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super.init(style: .grouped)
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loadSections()
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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self.title = tunnelViewModel.interfaceData[.name]
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self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .edit, target: self, action: #selector(editTapped))
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self.tableView.estimatedRowHeight = 44
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self.tableView.rowHeight = UITableView.automaticDimension
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self.tableView.allowsSelection = false
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self.tableView.register(StatusCell.self)
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self.tableView.register(KeyValueCell.self)
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self.tableView.register(ButtonCell.self)
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self.tableView.register(ActivateOnDemandCell.self)
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// State restoration
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self.restorationIdentifier = "TunnelDetailVC:\(tunnel.name)"
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}
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private func loadSections() {
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sections.removeAll()
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sections.append(.status)
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sections.append(.interface)
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tunnelViewModel.peersData.forEach { sections.append(.peer($0)) }
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sections.append(.onDemand)
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sections.append(.delete)
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}
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@objc func editTapped() {
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let editVC = TunnelEditTableViewController(tunnelsManager: tunnelsManager, tunnel: tunnel)
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editVC.delegate = self
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let editNC = UINavigationController(rootViewController: editVC)
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editNC.modalPresentationStyle = .formSheet
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present(editNC, animated: true)
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}
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func showConfirmationAlert(message: String, buttonTitle: String, from sourceView: UIView,
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onConfirmed: @escaping (() -> Void)) {
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let destroyAction = UIAlertAction(title: buttonTitle, style: .destructive) { _ in
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onConfirmed()
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}
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let cancelAction = UIAlertAction(title: "Cancel", style: .cancel)
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let alert = UIAlertController(title: "", message: message, preferredStyle: .actionSheet)
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alert.addAction(destroyAction)
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alert.addAction(cancelAction)
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// popoverPresentationController will be nil on iPhone and non-nil on iPad
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alert.popoverPresentationController?.sourceView = sourceView
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alert.popoverPresentationController?.sourceRect = sourceView.bounds
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self.present(alert, animated: true, completion: nil)
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}
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}
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// MARK: TunnelEditTableViewControllerDelegate
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extension TunnelDetailTableViewController: TunnelEditTableViewControllerDelegate {
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func tunnelSaved(tunnel: TunnelContainer) {
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tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration())
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loadSections()
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self.title = tunnel.name
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self.tableView.reloadData()
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}
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func tunnelEditingCancelled() {
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// Nothing to do
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}
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}
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// MARK: UITableViewDataSource
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extension TunnelDetailTableViewController {
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override func numberOfSections(in tableView: UITableView) -> Int {
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return sections.count
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}
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override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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switch sections[section] {
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case .status:
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return 1
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case .interface:
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return tunnelViewModel.interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFields).count
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case .peer(let peerData):
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return peerData.filterFieldsWithValueOrControl(peerFields: peerFields).count
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case .onDemand:
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return 1
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case .delete:
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return 1
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}
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}
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override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
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switch sections[section] {
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case .status:
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return "Status"
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case .interface:
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return "Interface"
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case .peer:
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return "Peer"
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case .onDemand:
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return "On-Demand Activation"
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case .delete:
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return nil
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}
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}
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override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
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switch sections[indexPath.section] {
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case .status:
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return statusCell(for: tableView, at: indexPath)
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case .interface:
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return interfaceCell(for: tableView, at: indexPath)
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case .peer(let peer):
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return peerCell(for: tableView, at: indexPath, with: peer)
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case .onDemand:
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return onDemandCell(for: tableView, at: indexPath)
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case .delete:
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return deleteConfigurationCell(for: tableView, at: indexPath)
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}
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}
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private func statusCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
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let cell: StatusCell = tableView.dequeueReusableCell(for: indexPath)
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cell.tunnel = self.tunnel
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cell.onSwitchToggled = { [weak self] isOn in
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guard let self = self else { return }
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if isOn {
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self.tunnelsManager.startActivation(of: self.tunnel)
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} else {
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self.tunnelsManager.startDeactivation(of: self.tunnel)
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}
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}
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return cell
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}
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private func interfaceCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
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let field = tunnelViewModel.interfaceData.filterFieldsWithValueOrControl(interfaceFields: interfaceFields)[indexPath.row]
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let cell: KeyValueCell = tableView.dequeueReusableCell(for: indexPath)
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cell.key = field.rawValue
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cell.value = tunnelViewModel.interfaceData[field]
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return cell
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}
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private func peerCell(for tableView: UITableView, at indexPath: IndexPath, with peerData: TunnelViewModel.PeerData) -> UITableViewCell {
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let field = peerData.filterFieldsWithValueOrControl(peerFields: peerFields)[indexPath.row]
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let cell: KeyValueCell = tableView.dequeueReusableCell(for: indexPath)
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cell.key = field.rawValue
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cell.value = peerData[field]
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return cell
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}
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private func onDemandCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
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let cell: ActivateOnDemandCell = tableView.dequeueReusableCell(for: indexPath)
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cell.tunnel = self.tunnel
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return cell
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}
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private func deleteConfigurationCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
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let cell: ButtonCell = tableView.dequeueReusableCell(for: indexPath)
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cell.buttonText = "Delete tunnel"
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cell.hasDestructiveAction = true
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cell.onTapped = { [weak self] in
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guard let self = self else { return }
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self.showConfirmationAlert(message: "Delete this tunnel?", buttonTitle: "Delete", from: cell) { [weak self] in
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guard let tunnelsManager = self?.tunnelsManager, let tunnel = self?.tunnel else { return }
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tunnelsManager.remove(tunnel: tunnel) { error in
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if error != nil {
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print("Error removing tunnel: \(String(describing: error))")
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return
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}
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}
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self?.navigationController?.navigationController?.popToRootViewController(animated: true)
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}
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}
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return cell
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}
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}
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private class StatusCell: UITableViewCell {
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var tunnel: TunnelContainer? {
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didSet(value) {
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update(from: tunnel?.status)
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statusObservervationToken = tunnel?.observe(\.status) { [weak self] tunnel, _ in
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self?.update(from: tunnel.status)
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}
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}
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}
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var isSwitchInteractionEnabled: Bool {
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get { return statusSwitch.isUserInteractionEnabled }
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set(value) { statusSwitch.isUserInteractionEnabled = value }
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}
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var onSwitchToggled: ((Bool) -> Void)?
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private var isOnSwitchToggledHandlerEnabled: Bool = true
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let statusSwitch: UISwitch
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private var statusObservervationToken: AnyObject?
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override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
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statusSwitch = UISwitch()
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super.init(style: .default, reuseIdentifier: KeyValueCell.reuseIdentifier)
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accessoryView = statusSwitch
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statusSwitch.addTarget(self, action: #selector(switchToggled), for: .valueChanged)
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}
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@objc func switchToggled() {
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if isOnSwitchToggledHandlerEnabled {
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onSwitchToggled?(statusSwitch.isOn)
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}
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}
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private func update(from status: TunnelStatus?) {
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guard let status = status else {
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reset()
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return
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}
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let text: String
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switch status {
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case .inactive:
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text = "Inactive"
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case .activating:
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text = "Activating"
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case .active:
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text = "Active"
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case .deactivating:
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text = "Deactivating"
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case .reasserting:
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text = "Reactivating"
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case .restarting:
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text = "Restarting"
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case .waiting:
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text = "Waiting"
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}
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textLabel?.text = text
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DispatchQueue.main.async { [weak statusSwitch] in
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guard let statusSwitch = statusSwitch else { return }
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statusSwitch.isOn = !(status == .deactivating || status == .inactive)
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statusSwitch.isUserInteractionEnabled = (status == .inactive || status == .active)
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}
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textLabel?.textColor = (status == .active || status == .inactive) ? UIColor.black : UIColor.gray
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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private func reset() {
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textLabel?.text = "Invalid"
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statusSwitch.isOn = false
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textLabel?.textColor = UIColor.gray
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statusSwitch.isUserInteractionEnabled = false
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}
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override func prepareForReuse() {
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super.prepareForReuse()
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reset()
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}
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}
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private class KeyValueCell: CopyableLabelTableViewCell {
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var key: String {
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get { return keyLabel.text ?? "" }
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set(value) { keyLabel.text = value }
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}
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var value: String {
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get { return valueLabel.text }
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set(value) { valueLabel.text = value }
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}
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override var textToCopy: String? {
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return self.valueLabel.text
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}
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let keyLabel: UILabel
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let valueLabel: ScrollableLabel
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var isStackedHorizontally = false
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var isStackedVertically = false
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var contentSizeBasedConstraints = [NSLayoutConstraint]()
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override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
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keyLabel = UILabel()
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keyLabel.font = UIFont.preferredFont(forTextStyle: .body)
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keyLabel.adjustsFontForContentSizeCategory = true
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valueLabel = ScrollableLabel()
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valueLabel.label.font = UIFont.preferredFont(forTextStyle: .body)
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valueLabel.label.adjustsFontForContentSizeCategory = true
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keyLabel.textColor = UIColor.black
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valueLabel.textColor = UIColor.gray
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super.init(style: style, reuseIdentifier: reuseIdentifier)
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contentView.addSubview(keyLabel)
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keyLabel.translatesAutoresizingMaskIntoConstraints = false
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keyLabel.textAlignment = .left
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NSLayoutConstraint.activate([
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keyLabel.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
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keyLabel.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5)
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])
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contentView.addSubview(valueLabel)
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valueLabel.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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valueLabel.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor),
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contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: valueLabel.bottomAnchor, multiplier: 0.5)
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])
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// Key label should never appear truncated
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keyLabel.setContentCompressionResistancePriority(.defaultHigh + 1, for: .horizontal)
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// Key label should hug it's content; value label should not.
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keyLabel.setContentHuggingPriority(.defaultHigh, for: .horizontal)
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valueLabel.setContentHuggingPriority(.defaultLow, for: .horizontal)
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configureForContentSize()
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}
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func configureForContentSize() {
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var constraints = [NSLayoutConstraint]()
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if self.traitCollection.preferredContentSizeCategory.isAccessibilityCategory {
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// Stack vertically
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if !isStackedVertically {
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constraints = [
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valueLabel.topAnchor.constraint(equalToSystemSpacingBelow: keyLabel.bottomAnchor, multiplier: 0.5),
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valueLabel.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
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keyLabel.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor)
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]
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isStackedVertically = true
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isStackedHorizontally = false
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}
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} else {
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// Stack horizontally
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if !isStackedHorizontally {
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constraints = [
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contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: keyLabel.bottomAnchor, multiplier: 0.5),
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valueLabel.leftAnchor.constraint(equalToSystemSpacingAfter: keyLabel.rightAnchor, multiplier: 1),
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valueLabel.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5)
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]
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isStackedHorizontally = true
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isStackedVertically = false
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}
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}
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if !constraints.isEmpty {
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NSLayoutConstraint.deactivate(self.contentSizeBasedConstraints)
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NSLayoutConstraint.activate(constraints)
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self.contentSizeBasedConstraints = constraints
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}
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func prepareForReuse() {
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super.prepareForReuse()
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key = ""
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value = ""
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configureForContentSize()
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}
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}
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private class ButtonCell: UITableViewCell {
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var buttonText: String {
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get { return button.title(for: .normal) ?? "" }
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set(value) { button.setTitle(value, for: .normal) }
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}
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var hasDestructiveAction: Bool {
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get { return button.tintColor == UIColor.red }
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set(value) { button.tintColor = value ? UIColor.red : buttonStandardTintColor }
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}
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var onTapped: (() -> Void)?
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let button: UIButton
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var buttonStandardTintColor: UIColor
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override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
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button = UIButton(type: .system)
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button.titleLabel?.font = UIFont.preferredFont(forTextStyle: .body)
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button.titleLabel?.adjustsFontForContentSizeCategory = true
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buttonStandardTintColor = button.tintColor
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super.init(style: style, reuseIdentifier: reuseIdentifier)
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contentView.addSubview(button)
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button.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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button.topAnchor.constraint(equalTo: contentView.layoutMarginsGuide.topAnchor),
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contentView.layoutMarginsGuide.bottomAnchor.constraint(equalTo: button.bottomAnchor),
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button.centerXAnchor.constraint(equalTo: contentView.centerXAnchor)
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])
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button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
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}
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@objc func buttonTapped() {
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onTapped?()
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func prepareForReuse() {
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super.prepareForReuse()
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buttonText = ""
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onTapped = nil
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hasDestructiveAction = false
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}
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}
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private class ActivateOnDemandCell: UITableViewCell {
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var tunnel: TunnelContainer? {
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didSet(value) {
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update(from: tunnel?.activateOnDemandSetting())
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onDemandStatusObservervationToken = tunnel?.observe(\.isActivateOnDemandEnabled) { [weak self] tunnel, _ in
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self?.update(from: tunnel.activateOnDemandSetting())
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}
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}
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}
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var onDemandStatusObservervationToken: AnyObject?
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override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
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super.init(style: .value1, reuseIdentifier: reuseIdentifier)
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textLabel?.text = "Activate on demand"
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textLabel?.font = UIFont.preferredFont(forTextStyle: .body)
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textLabel?.adjustsFontForContentSizeCategory = true
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detailTextLabel?.font = UIFont.preferredFont(forTextStyle: .body)
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detailTextLabel?.adjustsFontForContentSizeCategory = true
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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func update(from activateOnDemandSetting: ActivateOnDemandSetting?) {
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detailTextLabel?.text = TunnelViewModel.activateOnDemandDetailText(for: activateOnDemandSetting)
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}
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override func prepareForReuse() {
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super.prepareForReuse()
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textLabel?.text = "Activate on demand"
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detailTextLabel?.text = ""
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}
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}
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