macOS: Manage tunnels window: Tunnels list

Signed-off-by: Roopesh Chander <roop@roopc.net>

WireGuard/WireGuard/UI/macOS/NSTableView+Reuse.swift

@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018 WireGuard LLC. All Rights Reserved.
+
+import Cocoa
+
+extension NSTableView {
+    func dequeueReusableCell<T: NSView>() -> T {
+        let identifier = NSUserInterfaceItemIdentifier(NSStringFromClass(T.self))
+        if let cellView = makeView(withIdentifier: identifier, owner: self) {
+            //swiftlint:disable:next force_cast
+            return cellView as! T
+        }
+        let cellView = T()
+        cellView.identifier = identifier
+        return cellView
+    }
+}

WireGuard/WireGuard/UI/macOS/StatusMenu.swift

@@ -116,7 +116,11 @@ class StatusMenu: NSMenu {
     }
 
     @objc func manageTunnelsClicked() {
-        print("Unimplemented")
+        let manageTunnelsRootVC = ManageTunnelsRootViewController(tunnelsManager: tunnelsManager)
+        let window = NSWindow(contentViewController: manageTunnelsRootVC)
+        window.setFrameAutosaveName(NSWindow.FrameAutosaveName("ManageTunnelsWindow")) // Auto-save window position and size
+        NSApp.activate(ignoringOtherApps: true)
+        window.makeKeyAndOrderFront(self)
     }
 
     @objc func importTunnelsClicked() {

WireGuard/WireGuard/UI/macOS/View/TunnelListCell.swift

@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018 WireGuard LLC. All Rights Reserved.
+
+import Cocoa
+
+class TunnelListCell: NSView {
+    var tunnel: TunnelContainer? {
+        didSet(value) {
+            // Bind to the tunnel's name
+            nameLabel.stringValue = tunnel?.name ?? ""
+            nameObservationToken = tunnel?.observe(\TunnelContainer.name) { [weak self] tunnel, _ in
+                self?.nameLabel.stringValue = tunnel.name
+            }
+            // Bind to the tunnel's status
+            statusImageView.image = TunnelListCell.image(for: tunnel?.status)
+            statusObservationToken = tunnel?.observe(\TunnelContainer.status) { [weak self] tunnel, _ in
+                self?.statusImageView.image = TunnelListCell.image(for: tunnel.status)
+            }
+        }
+    }
+
+    let nameLabel: NSTextField = {
+        let nameLabel = NSTextField()
+        nameLabel.isEditable = false
+        nameLabel.isSelectable = false
+        nameLabel.isBordered = false
+        nameLabel.maximumNumberOfLines = 1
+        nameLabel.lineBreakMode = .byTruncatingTail
+        return nameLabel
+    }()
+
+    let statusImageView = NSImageView()
+
+    private var statusObservationToken: AnyObject?
+    private var nameObservationToken: AnyObject?
+
+    init() {
+        super.init(frame: CGRect.zero)
+
+        addSubview(statusImageView)
+        addSubview(nameLabel)
+        statusImageView.translatesAutoresizingMaskIntoConstraints = false
+        nameLabel.translatesAutoresizingMaskIntoConstraints = false
+        nameLabel.backgroundColor = .clear
+        NSLayoutConstraint.activate([
+            self.leadingAnchor.constraint(equalTo: statusImageView.leadingAnchor),
+            statusImageView.trailingAnchor.constraint(equalTo: nameLabel.leadingAnchor),
+            statusImageView.widthAnchor.constraint(equalToConstant: 20),
+            nameLabel.trailingAnchor.constraint(equalTo: self.trailingAnchor),
+            statusImageView.centerYAnchor.constraint(equalTo: self.centerYAnchor),
+            nameLabel.centerYAnchor.constraint(equalTo: self.centerYAnchor)
+        ])
+    }
+
+    required init?(coder decoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    static func image(for status: TunnelStatus?) -> NSImage? {
+        guard let status = status else { return nil }
+        switch status {
+        case .active, .restarting, .reasserting:
+            return NSImage(named: NSImage.statusAvailableName)
+        case .activating, .waiting:
+            return NSImage(named: NSImage.statusPartiallyAvailableName)
+        case .deactivating, .inactive:
+            return nil
+        }
+    }
+
+    override func prepareForReuse() {
+        nameLabel.stringValue = ""
+        statusImageView.image = nil
+    }
+}

WireGuard/WireGuard/UI/macOS/ViewController/ManageTunnelsRootViewController.swift

@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018 WireGuard LLC. All Rights Reserved.
+
+import Cocoa
+
+class ManageTunnelsRootViewController: NSViewController {
+
+    let tunnelsManager: TunnelsManager
+
+    init(tunnelsManager: TunnelsManager) {
+        self.tunnelsManager = tunnelsManager
+        super.init(nibName: nil, bundle: nil)
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func loadView() {
+        view = NSView()
+
+        let horizontalSpacing: CGFloat = 30
+        let verticalSpacing: CGFloat = 20
+
+        let container = NSLayoutGuide()
+        view.addLayoutGuide(container)
+        NSLayoutConstraint.activate([
+            container.topAnchor.constraint(equalTo: view.topAnchor, constant: verticalSpacing),
+            view.bottomAnchor.constraint(equalTo: container.bottomAnchor, constant: verticalSpacing),
+            container.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: horizontalSpacing),
+            view.trailingAnchor.constraint(equalTo: container.trailingAnchor, constant: horizontalSpacing)
+        ])
+
+        let tunnelsListVC = TunnelsListTableViewController(tunnelsManager: tunnelsManager)
+        let tunnelsListView = tunnelsListVC.view
+        let tunnelDetailView = NSView()
+        tunnelDetailView.wantsLayer = true
+        tunnelDetailView.layer?.backgroundColor = NSColor.gray.cgColor
+
+        addChild(tunnelsListVC)
+        view.addSubview(tunnelsListView)
+        view.addSubview(tunnelDetailView)
+
+        tunnelsListView.translatesAutoresizingMaskIntoConstraints = false
+        tunnelDetailView.translatesAutoresizingMaskIntoConstraints = false
+
+        NSLayoutConstraint.activate([
+            tunnelsListView.topAnchor.constraint(equalTo: container.topAnchor),
+            tunnelsListView.bottomAnchor.constraint(equalTo: container.bottomAnchor),
+            tunnelsListView.leadingAnchor.constraint(equalTo: container.leadingAnchor),
+            tunnelDetailView.leadingAnchor.constraint(equalTo: tunnelsListView.trailingAnchor, constant: horizontalSpacing),
+            tunnelDetailView.trailingAnchor.constraint(equalTo: container.trailingAnchor),
+            tunnelsListView.widthAnchor.constraint(equalTo: container.widthAnchor, multiplier: 0.3)
+        ])
+    }
+}

WireGuard/WireGuard/UI/macOS/ViewController/TunnelsListTableViewController.swift

@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018 WireGuard LLC. All Rights Reserved.
+
+import Cocoa
+
+class TunnelsListTableViewController: NSViewController {
+
+    let tunnelsManager: TunnelsManager
+
+    let tableView: NSTableView = {
+        let tableView = NSTableView()
+        tableView.addTableColumn(NSTableColumn(identifier: NSUserInterfaceItemIdentifier("TunnelsList")))
+        tableView.headerView = nil
+        tableView.rowSizeStyle = .medium
+        return tableView
+    }()
+
+    init(tunnelsManager: TunnelsManager) {
+        self.tunnelsManager = tunnelsManager
+        super.init(nibName: nil, bundle: nil)
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func loadView() {
+        tableView.dataSource = self
+        tableView.delegate = self
+
+        let scrollView = NSScrollView()
+        scrollView.hasVerticalScroller = true
+        scrollView.autohidesScrollers = true
+
+        let clipView = NSClipView()
+        clipView.documentView = tableView
+        scrollView.contentView = clipView
+
+        self.view = scrollView
+    }
+}
+
+extension TunnelsListTableViewController: NSTableViewDataSource {
+    func numberOfRows(in tableView: NSTableView) -> Int {
+        return tunnelsManager.numberOfTunnels()
+    }
+}
+
+extension TunnelsListTableViewController: NSTableViewDelegate {
+    func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
+        let cell: TunnelListCell = tableView.dequeueReusableCell()
+        cell.tunnel = tunnelsManager.tunnel(at: row)
+        return cell
+    }
+}