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// SPDX-License-Identifier: MIT
// Copyright © 2018-2019 WireGuard LLC. All Rights Reserved.
import UIKit
class MainViewController: UISplitViewController {
var tunnelsManager: TunnelsManager?
var onTunnelsManagerReady: ((TunnelsManager) -> Void)?
var tunnelsListVC: TunnelsListTableViewController?
private var foregroundObservationToken: AnyObject?
init() {
let detailVC = UIViewController()
detailVC.view.backgroundColor = .white
let detailNC = UINavigationController(rootViewController: detailVC)
let masterVC = TunnelsListTableViewController()
let masterNC = UINavigationController(rootViewController: masterVC)
tunnelsListVC = masterVC
super.init(nibName: nil, bundle: nil)
viewControllers = [ masterNC, detailNC ]
restorationIdentifier = "MainVC"
masterNC.restorationIdentifier = "MasterNC"
detailNC.restorationIdentifier = "DetailNC"
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
delegate = self
// On iPad, always show both masterVC and detailVC, even in portrait mode, like the Settings app
preferredDisplayMode = .allVisible
// Create the tunnels manager, and when it's ready, inform tunnelsListVC
TunnelsManager.create { [weak self] result in
guard let self = self else { return }
if let error = result.error {
ErrorPresenter.showErrorAlert(error: error, from: self)
return
}
let tunnelsManager: TunnelsManager = result.value!
self.tunnelsManager = tunnelsManager
self.tunnelsListVC?.setTunnelsManager(tunnelsManager: tunnelsManager)
tunnelsManager.activationDelegate = self
self.onTunnelsManagerReady?(tunnelsManager)
self.onTunnelsManagerReady = nil
}
foregroundObservationToken = NotificationCenter.default.addObserver(forName: UIApplication.willEnterForegroundNotification, object: nil, queue: OperationQueue.main) { [weak self] _ in
guard let self = self else { return }
self.tunnelsManager?.reload { [weak self] hasChanges in
guard let self = self, let tunnelsManager = self.tunnelsManager, hasChanges else { return }
self.tunnelsListVC?.setTunnelsManager(tunnelsManager: tunnelsManager)
if self.isCollapsed {
(self.viewControllers[0] as? UINavigationController)?.popViewController(animated: false)
} else {
let detailVC = UIViewController()
detailVC.view.backgroundColor = .white
let detailNC = UINavigationController(rootViewController: detailVC)
self.showDetailViewController(detailNC, sender: self)
}
if let presentedNavController = self.presentedViewController as? UINavigationController, presentedNavController.viewControllers.first is TunnelEditTableViewController {
self.presentedViewController?.dismiss(animated: false, completion: nil)
}
}
}
}
}
extension MainViewController: TunnelsManagerActivationDelegate {
func tunnelActivationAttemptFailed(tunnel: TunnelContainer, error: TunnelsManagerActivationAttemptError) {
ErrorPresenter.showErrorAlert(error: error, from: self)
}
func tunnelActivationAttemptSucceeded(tunnel: TunnelContainer) {
// Nothing to do
}
func tunnelActivationFailed(tunnel: TunnelContainer, error: TunnelsManagerActivationError) {
ErrorPresenter.showErrorAlert(error: error, from: self)
}
func tunnelActivationSucceeded(tunnel: TunnelContainer) {
// Nothing to do
}
}
extension MainViewController {
func refreshTunnelConnectionStatuses() {
if let tunnelsManager = tunnelsManager {
tunnelsManager.refreshStatuses()
}
}
func showTunnelDetailForTunnel(named tunnelName: String, animated: Bool) {
let showTunnelDetailBlock: (TunnelsManager) -> Void = { [weak self] tunnelsManager in
if let tunnel = tunnelsManager.tunnel(named: tunnelName) {
let tunnelDetailVC = TunnelDetailTableViewController(tunnelsManager: tunnelsManager, tunnel: tunnel)
let tunnelDetailNC = UINavigationController(rootViewController: tunnelDetailVC)
tunnelDetailNC.restorationIdentifier = "DetailNC"
if let self = self {
if animated {
self.showDetailViewController(tunnelDetailNC, sender: self)
} else {
UIView.performWithoutAnimation {
self.showDetailViewController(tunnelDetailNC, sender: self)
}
}
}
}
}
if let tunnelsManager = tunnelsManager {
showTunnelDetailBlock(tunnelsManager)
} else {
onTunnelsManagerReady = showTunnelDetailBlock
}
}
}
extension MainViewController: UISplitViewControllerDelegate {
func splitViewController(_ splitViewController: UISplitViewController,
collapseSecondary secondaryViewController: UIViewController,
onto primaryViewController: UIViewController) -> Bool {
// On iPhone, if the secondaryVC (detailVC) is just a UIViewController, it indicates that it's empty,
// so just show the primaryVC (masterVC).
let detailVC = (secondaryViewController as? UINavigationController)?.viewControllers.first
let isDetailVCEmpty: Bool
if let detailVC = detailVC {
isDetailVCEmpty = (type(of: detailVC) == UIViewController.self)
} else {
isDetailVCEmpty = true
}
return isDetailVCEmpty
}
}
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