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//
// TunnelControlView.swift
// MullvadVPN
//
// Created by pronebird on 01/11/2019.
// Copyright © 2019 Mullvad VPN AB. All rights reserved.
//
import Combine
import UIKit
enum TunnelControlAction {
/// An action emitted only when the tunnel is down
case connect
/// An action emitted when user either selects to cancel the connection or disconnect when
/// the tunnel is already connected
case disconnect
/// An action emitted when user requests to either select the location when the tunnel is down
/// or change the location when the tunnel is connecting or connected.
case selectLocation
}
protocol TunnelControlViewControllerDelegate: class {
func tunnelControlViewController(_ controller: TunnelControlViewController, handleAction action: TunnelControlAction) -> Void
}
class TunnelControlViewController: UIViewController {
@IBOutlet var disconnectedView: UIView!
@IBOutlet var connectingView: UIView!
@IBOutlet var connectedView: UIView!
weak var delegate: TunnelControlViewControllerDelegate?
private var tunnelStateSubscriber: AnyCancellable?
private var controlsView: UIView?
override func viewDidLoad() {
super.viewDidLoad()
tunnelStateSubscriber = TunnelManager.shared.$tunnelState
.receive(on: DispatchQueue.main)
.sink { [weak self] (tunnelState) in
self?.didReceiveTunnelState(tunnelState)
}
}
private func didReceiveTunnelState(_ tunnelState: TunnelState) {
switch tunnelState {
case .disconnected:
addControlsView(disconnectedView)
case .connecting:
addControlsView(connectingView)
case .connected, .reconnecting, .disconnecting:
addControlsView(connectedView)
}
}
private func addControlsView(_ nextControlsView: UIView) {
guard controlsView != nextControlsView else { return }
controlsView?.removeFromSuperview()
controlsView = nextControlsView
nextControlsView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(nextControlsView)
NSLayoutConstraint.activate([
nextControlsView.topAnchor.constraint(equalTo: view.topAnchor),
nextControlsView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
nextControlsView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
nextControlsView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
])
}
// MARK: - Actions
@IBAction func handleSecureConnection(_ sender: Any) {
delegate?.tunnelControlViewController(self, handleAction: .connect)
}
@IBAction func handleDisconnect(_ sender: Any) {
delegate?.tunnelControlViewController(self, handleAction: .disconnect)
}
@IBAction func handleSelectLocation(_ sender: Any) {
delegate?.tunnelControlViewController(self, handleAction: .selectLocation)
}
}
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