BrowserCore/NavigationManager.swift

@@ -6,7 +6,6 @@
 //
 
 import Foundation
-import  Combine
 
 public protocol NavigationManagerDelegate: class {
     func loadNonGeminiURL(_ url: URL)
@@ -20,8 +19,6 @@ public class NavigationManager: NSObject, ObservableObject {
     @Published public var backStack = [URL]()
     @Published public var forwardStack = [URL]()
     
-    public let navigationOperation = PassthroughSubject<Operation, Never>()
-    
     public var displayURL: String {
         var components = URLComponents(url: currentURL, resolvingAgainstBaseURL: false)!
         if components.port == 1965 {
@@ -61,18 +58,17 @@ public class NavigationManager: NSObject, ObservableObject {
         backStack.append(currentURL)
         currentURL = url
         forwardStack = []
-        
-        navigationOperation.send(.go)
     }
     
-    @objc public func reload() {
+    public func reload() {
         let url = currentURL
         currentURL = url
-        // todo: send navigation op
     }
     
-    @objc public func goBack() {
+    @objc public func back() {
-        back(count: 1)
+        guard !backStack.isEmpty else { return }
+        forwardStack.insert(currentURL, at: 0)
+        currentURL = backStack.removeLast()
     }
     
     public func back(count: Int) {
@@ -82,12 +78,12 @@ public class NavigationManager: NSObject, ObservableObject {
         forwardStack.insert(currentURL, at: 0)
         currentURL = removed.removeFirst()
         forwardStack.insert(contentsOf: removed, at: 0)
-        
-        navigationOperation.send(.backward(count: count))
     }
     
-    @objc public func goForward() {
+    @objc public func forward() {
-        forward(count: 1)
+        guard !forwardStack.isEmpty else { return }
+        backStack.append(currentURL)
+        currentURL = forwardStack.removeFirst()
     }
     
     public func forward(count: Int) {
@@ -97,14 +93,6 @@ public class NavigationManager: NSObject, ObservableObject {
         backStack.append(currentURL)
         currentURL = removed.removeLast()
         backStack.append(contentsOf: removed)
-        
-        navigationOperation.send(.forward(count: count))
     }
     
 }
-
-public extension NavigationManager {
-    enum Operation {
-        case go, forward(count: Int), backward(count: Int)
-    }
-}

Gemini-iOS/ActivityView.swift

@@ -0,0 +1,24 @@
+//
+//  ActivityView.swift
+//  Gemini-iOS
+//
+//  Created by Shadowfacts on 9/30/20.
+//
+
+import SwiftUI
+
+struct ActivityView: UIViewControllerRepresentable {
+    typealias UIViewControllerType = UIActivityViewController
+    
+    let items: [Any]
+    let activities: [UIActivity]?
+    
+    func makeUIViewController(context: Context) -> UIActivityViewController {
+        return UIActivityViewController(activityItems: items, applicationActivities: activities)
+    }
+    
+    func updateUIViewController(_ uiViewController: UIActivityViewController, context: Context) {
+    }
+    
+    
+}

Gemini-iOS/AppDelegate.swift

@@ -13,8 +13,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
-        SymbolCache.load()
+        // Override point for customization after application launch.
-        
         return true
     }
 

Gemini-iOS/BrowserNavigationController.swift

@@ -1,351 +0,0 @@
-//
-//  BrowserNavigationController.swift
-//  Gemini-iOS
-//
-//  Created by Shadowfacts on 12/17/20.
-//
-
-import UIKit
-import BrowserCore
-import Combine
-import SwiftUI
-
-class BrowserNavigationController: UIViewController {
-
-    let navigator: NavigationManager
-    
-    private var backBrowserVCs = [BrowserWebViewController]()
-    private var forwardBrowserVCs = [BrowserWebViewController]()
-    private var currentBrowserVC: BrowserWebViewController!
-    
-    private var browserContainer: UIView!
-    private var navBarView: NavigationBarView!
-    private var toolbarView: ToolbarView!
-    
-    private var gestureState: GestureState?
-    private var trackingScroll = false
-    private var scrollStartedBelowEnd = false
-    private var prevScrollViewContentOffset: CGPoint?
-    private var toolbarOffset: CGFloat = 0 {
-        didSet {
-            let realOffset = toolbarOffset * max(toolbarView.bounds.height, navBarView.bounds.height)
-            toolbarView.transform = CGAffineTransform(translationX: 0, y: realOffset)
-            navBarView.transform = CGAffineTransform(translationX: 0, y: -realOffset)
-            
-            if (oldValue <= 0.5 && toolbarOffset > 0.5) || (oldValue > 0.5 && toolbarOffset <= 0.5) {
-                setNeedsStatusBarAppearanceUpdate()
-            }
-        }
-    }
-    
-    override var prefersStatusBarHidden: Bool {
-        toolbarOffset > 0.5
-    }
-    
-    override var preferredStatusBarUpdateAnimation: UIStatusBarAnimation {
-        .slide
-    }
-    
-    private var cancellables = [AnyCancellable]()
-    
-    init(navigator: NavigationManager) {
-        self.navigator = navigator
-        
-        super.init(nibName: nil, bundle: nil)
-    }
-    
-    required init?(coder: NSCoder) {
-        fatalError("init(coder:) has not been implemented")
-    }
-    
-    override func viewDidLoad() {
-        super.viewDidLoad()
-
-        view.backgroundColor = .systemBackground
-        
-        browserContainer = UIView()
-        browserContainer.translatesAutoresizingMaskIntoConstraints = false
-        view.embedSubview(browserContainer)
-        
-        currentBrowserVC = createBrowserVC(url: navigator.currentURL)
-        currentBrowserVC.scrollViewDelegate = self
-        embedChild(currentBrowserVC, in: browserContainer)
-        
-        navBarView = NavigationBarView(navigator: navigator)
-        navBarView.translatesAutoresizingMaskIntoConstraints = false
-        view.addSubview(navBarView)
-        NSLayoutConstraint.activate([
-            navBarView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
-            navBarView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
-            navBarView.topAnchor.constraint(equalTo: view.topAnchor),
-        ])
-        
-        toolbarView = ToolbarView(navigator: navigator)
-        toolbarView.showTableOfContents = self.showTableOfContents
-        toolbarView.showShareSheet = self.showShareSheet
-        toolbarView.showPreferences = self.showPreferences
-        toolbarView.translatesAutoresizingMaskIntoConstraints = false
-        view.addSubview(toolbarView)
-        NSLayoutConstraint.activate([
-            toolbarView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
-            toolbarView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
-            toolbarView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
-        ])
-        
-        navigator.navigationOperation
-            .sink(receiveValue: self.onNavigate)
-            .store(in: &cancellables)
-        
-        view.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(panGestureRecognized)))
-    }
-    
-    override func viewDidLayoutSubviews() {
-        super.viewDidLayoutSubviews()
-        
-        setBrowserVCSafeAreaInsets(currentBrowserVC)
-    }
-    
-    private func createBrowserVC(url: URL) -> BrowserWebViewController {
-        let vc = BrowserWebViewController(navigator: navigator, url: url)
-        setBrowserVCSafeAreaInsets(vc)
-        return vc
-    }
-    
-    private func setBrowserVCSafeAreaInsets(_ vc: BrowserWebViewController) {
-        guard let toolbarView = toolbarView,
-              let navBarView = navBarView else { return }
-        vc.additionalSafeAreaInsets = UIEdgeInsets(
-            top: navBarView.bounds.height - view.safeAreaInsets.top,
-            left: 0,
-            bottom: toolbarView.bounds.height - view.safeAreaInsets.bottom,
-            right: 0
-        )
-    }
-    
-    private func onNavigate(_ operation: NavigationManager.Operation) {
-        let newVC: BrowserWebViewController
-        
-        switch operation {
-        case .go:
-            backBrowserVCs.append(currentBrowserVC)
-            newVC = BrowserWebViewController(navigator: navigator, url: navigator.currentURL)
-            
-        case let .backward(count: count):
-            var removed = backBrowserVCs.suffix(count)
-            backBrowserVCs.removeLast(count)
-            forwardBrowserVCs.insert(currentBrowserVC, at: 0)
-            newVC = removed.removeFirst()
-            forwardBrowserVCs.insert(contentsOf: removed, at: 0)
-            
-        case let .forward(count: count):
-            var removed = forwardBrowserVCs.prefix(count)
-            forwardBrowserVCs.removeFirst(count)
-            backBrowserVCs.append(currentBrowserVC)
-            newVC = removed.removeFirst()
-            backBrowserVCs.append(contentsOf: removed)
-        }
-        
-        currentBrowserVC.removeViewAndController()
-        currentBrowserVC.scrollViewDelegate = nil
-        currentBrowserVC = newVC
-        currentBrowserVC.scrollViewDelegate = self
-        embedChild(newVC, in: browserContainer)
-        
-        UIView.animate(withDuration: 0.25, delay: 0, options: .curveEaseInOut) {
-            self.toolbarOffset = 0
-        }
-
-    }
-    
-    private let startEdgeNavigationSwipeDistance: CGFloat = 75
-    private let finishEdgeNavigationVelocityThreshold: CGFloat = 500
-    private let edgeNavigationMaxDimmingAlpha: CGFloat = 0.35
-    private let edgeNavigationParallaxFactor: CGFloat = 0.25
-    private let totalEdgeNavigationTime: TimeInterval = 0.4
-    
-    @objc private func panGestureRecognized(_ recognizer: UIPanGestureRecognizer) {
-        let location = recognizer.location(in: view)
-        let velocity = recognizer.velocity(in: view)
-        
-        switch recognizer.state {
-        case .began:
-            // swipe gestures cannot begin in navbar/toolbar bounds
-            let min = view.convert(navBarView.bounds, from: navBarView).maxY
-            let max = view.convert(toolbarView.bounds, from: toolbarView).minY
-            if toolbarOffset == 0 && (location.y < min || location.y > max) {
-                return
-            }
-            
-            if location.x < startEdgeNavigationSwipeDistance && velocity.x > 0 && navigator.backStack.count > 0 {
-                let older = backBrowserVCs.last ?? BrowserWebViewController(navigator: navigator, url: navigator.backStack.last!)
-                embedChild(older, in: browserContainer)
-                older.view.layer.zPosition = -2
-                older.view.transform = CGAffineTransform(translationX: -1 * edgeNavigationParallaxFactor * view.bounds.width, y: 0)
-                
-                let dimmingView = UIView()
-                dimmingView.translatesAutoresizingMaskIntoConstraints = false
-                dimmingView.backgroundColor = .black
-                dimmingView.layer.zPosition = -1
-                dimmingView.alpha = edgeNavigationMaxDimmingAlpha
-                browserContainer.embedSubview(dimmingView)
-                let animator = UIViewPropertyAnimator(duration: totalEdgeNavigationTime, curve: .easeInOut) {
-                    dimmingView.alpha = 0
-                    older.view.transform = .identity
-                    self.currentBrowserVC.view.transform = CGAffineTransform(translationX: self.view.bounds.width, y: 0)
-                }
-                animator.addCompletion { (position) in
-                    dimmingView.removeFromSuperview()
-                    
-                    older.view.transform = .identity
-                    older.view.layer.zPosition = 0
-                    older.removeViewAndController()
-                    
-                    self.currentBrowserVC.view.transform = .identity
-                    
-                    if position == .end {
-                        self.navigator.goBack()
-                    }
-                }
-                gestureState = .backwards(animator)
-            } else if location.x > view.bounds.width - startEdgeNavigationSwipeDistance && velocity.x < 0 && navigator.forwardStack.count > 0 {
-                let newer = forwardBrowserVCs.first ?? BrowserWebViewController(navigator: navigator, url: navigator.backStack.first!)
-                embedChild(newer, in: browserContainer)
-                newer.view.transform = CGAffineTransform(translationX: view.bounds.width, y: 0)
-                newer.view.layer.zPosition = 2
-                
-                let dimmingView = UIView()
-                dimmingView.translatesAutoresizingMaskIntoConstraints = false
-                dimmingView.backgroundColor = .black
-                dimmingView.layer.zPosition = 1
-                dimmingView.alpha = 0
-                browserContainer.embedSubview(dimmingView)
-                let animator = UIViewPropertyAnimator(duration: totalEdgeNavigationTime, curve: .easeInOut) {
-                    dimmingView.alpha = self.edgeNavigationMaxDimmingAlpha
-                    newer.view.transform = .identity
-                    self.currentBrowserVC.view.transform = CGAffineTransform(translationX: -1 * self.edgeNavigationParallaxFactor * self.view.bounds.width, y: 0)
-                }
-                animator.addCompletion { (position) in
-                    dimmingView.removeFromSuperview()
-                    
-                    newer.removeViewAndController()
-                    newer.view.layer.zPosition = 0
-                    newer.view.transform = .identity
-                    
-                    self.currentBrowserVC.view.transform = .identity
-                    
-                    if position == .end {
-                        self.navigator.goForward()
-                    }
-                }
-                gestureState = .forwards(animator)
-            }
-        
-        case .changed:
-            let translation = recognizer.translation(in: view)
-            
-            switch gestureState {
-            case let .backwards(animator):
-                animator.fractionComplete = translation.x / view.bounds.width
-            case let .forwards(animator):
-                animator.fractionComplete = abs(translation.x) / view.bounds.width
-            case nil:
-                break
-            }
-            
-        case .ended, .cancelled:
-            switch gestureState {
-            case let .backwards(animator):
-                let shouldComplete = location.x > view.bounds.width / 2 || velocity.x > finishEdgeNavigationVelocityThreshold
-                animator.isReversed = !shouldComplete
-                animator.startAnimation()
-            case let .forwards(animator):
-                let shouldComplete = location.x < view.bounds.width / 2 || velocity.x < -finishEdgeNavigationVelocityThreshold
-                animator.isReversed = !shouldComplete
-                animator.startAnimation()
-            case nil:
-                break
-            }
-            
-            gestureState = nil
-            
-        default:
-            return
-        }
-    }
-    
-    private func showTableOfContents() {
-        guard let doc = currentBrowserVC.document else { return }
-        let view = TableOfContentsView(document: doc) { (lineIndexToJumpTo) in
-            self.dismiss(animated: true) {
-                if let index = lineIndexToJumpTo {
-                    self.currentBrowserVC.scrollToLine(index: index, animated: !UIAccessibility.isReduceMotionEnabled)
-                }
-            }
-        }
-        let host = UIHostingController(rootView: view)
-        present(host, animated: true)
-    }
-    
-    private func showShareSheet(_ source: UIView) {
-        let vc = UIActivityViewController(activityItems: [navigator.currentURL], applicationActivities: nil)
-        vc.popoverPresentationController?.sourceView = source
-        present(vc, animated: true)
-    }
-    
-    private func showPreferences() {
-        let host = UIHostingController(rootView: PreferencesView())
-        present(host, animated: true)
-    }
-
-}
-
-extension BrowserNavigationController {
-    enum GestureState {
-        case backwards(UIViewPropertyAnimator)
-        case forwards(UIViewPropertyAnimator)
-    }
-}
-
-extension BrowserNavigationController: UIScrollViewDelegate {
-    func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
-        trackingScroll = true
-        prevScrollViewContentOffset = scrollView.contentOffset
-        scrollStartedBelowEnd = scrollView.contentOffset.y >= (scrollView.contentSize.height - scrollView.bounds.height + scrollView.safeAreaInsets.bottom)
-    }
-
-    func scrollViewDidScroll(_ scrollView: UIScrollView) {
-        guard trackingScroll else { return }
-        defer { prevScrollViewContentOffset = scrollView.contentOffset }
-        guard let prevOffset = prevScrollViewContentOffset else { return }
-        
-        let delta = scrollView.contentOffset.y - prevOffset.y
-        
-        let belowEnd = scrollView.contentOffset.y > (scrollView.contentSize.height - scrollView.bounds.height + scrollView.safeAreaInsets.bottom)
-        
-        if belowEnd {
-            if scrollStartedBelowEnd {
-                UIView.animate(withDuration: 0.15, delay: 0, options: .curveEaseInOut) {
-                    self.toolbarOffset = 0
-                }
-                trackingScroll = false
-            }
-        } else if delta > 0 || (delta < 0 && toolbarOffset < 1) {
-            let normalizedDelta = delta / max(toolbarView.bounds.height, navBarView.bounds.height)
-            toolbarOffset = max(0, min(1, toolbarOffset + normalizedDelta))
-        }
-    }
-    
-    func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
-        guard trackingScroll else { return }
-        trackingScroll = false
-        
-        if velocity.y == 0 {
-            return
-        }
-        
-        let finalOffset: CGFloat = velocity.y < 0 ? 0 : 1
-        UIView.animate(withDuration: 0.15, delay: 0, options: .curveEaseOut) {
-            self.toolbarOffset = finalOffset
-        }
-    }
-}

Gemini-iOS/BrowserViewController.swift

@@ -0,0 +1,164 @@
+//
+//  BrowserViewController.swift
+//  Gemini-iOS
+//
+//  Created by Shadowfacts on 9/28/20.
+//
+
+import UIKit
+import SwiftUI
+import BrowserCore
+import Combine
+
+class BrowserViewController: UIViewController, UIScrollViewDelegate {
+    
+    let navigator: NavigationManager
+    
+    private var scrollView: UIScrollView!
+    
+    private var browserHost: UIHostingController<BrowserView>!
+    private var navBarHost: UIHostingController<NavigationBar>!
+    private var toolBarHost: UIHostingController<ToolBar>!
+    
+    private var prevScrollViewContentOffset: CGPoint?
+    
+    private var barAnimator: UIViewPropertyAnimator?
+    
+    private var cancellables = [AnyCancellable]()
+    
+    init(navigator: NavigationManager) {
+        self.navigator = navigator
+        
+        super.init(nibName: nil, bundle: nil)
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        view.backgroundColor = .systemBackground
+        
+        scrollView = UIScrollView()
+        scrollView.translatesAutoresizingMaskIntoConstraints = false
+        scrollView.keyboardDismissMode = .interactive
+        view.addSubview(scrollView)
+        scrollView.delegate = self
+        NSLayoutConstraint.activate([
+            scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            scrollView.topAnchor.constraint(equalTo: view.topAnchor),
+            scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+        
+        browserHost = UIHostingController(rootView: BrowserView(navigator: navigator, scrollingEnabled: false))
+        browserHost.view.translatesAutoresizingMaskIntoConstraints = false
+        scrollView.addSubview(browserHost.view)
+        addChild(browserHost)
+        browserHost.didMove(toParent: self)
+        NSLayoutConstraint.activate([
+            scrollView.contentLayoutGuide.leadingAnchor.constraint(equalTo: browserHost.view.leadingAnchor),
+            scrollView.contentLayoutGuide.trailingAnchor.constraint(equalTo: browserHost.view.trailingAnchor),
+            scrollView.contentLayoutGuide.topAnchor.constraint(equalTo: browserHost.view.topAnchor),
+            scrollView.contentLayoutGuide.bottomAnchor.constraint(equalTo: browserHost.view.bottomAnchor),
+            browserHost.view.widthAnchor.constraint(equalTo: view.widthAnchor),
+            
+            // make sure the browser host view is at least the screen height so the loading indicator appears centered
+            browserHost.view.heightAnchor.constraint(greaterThanOrEqualTo: view.heightAnchor),
+        ])
+        
+        navBarHost = UIHostingController(rootView: NavigationBar(navigator: navigator))
+        navBarHost.view.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(navBarHost.view)
+        addChild(navBarHost)
+        navBarHost.didMove(toParent: self)
+        
+        NSLayoutConstraint.activate([
+            navBarHost.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            navBarHost.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            navBarHost.view.topAnchor.constraint(equalTo: view.topAnchor),
+        ])
+        
+        toolBarHost = UIHostingController(rootView: ToolBar(navigator: navigator))
+        toolBarHost.view.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(toolBarHost.view)
+        addChild(toolBarHost)
+        toolBarHost.didMove(toParent: self)
+        NSLayoutConstraint.activate([
+            toolBarHost.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            toolBarHost.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            toolBarHost.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+        ])
+        
+        navigator.$currentURL
+            .sink { (_) in
+                self.scrollView.contentOffset = .zero
+                self.navBarHost.view.transform = .identity
+                self.toolBarHost.view.transform = .identity
+            }
+            .store(in: &cancellables)
+    }
+    
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        
+        let insets = UIEdgeInsets(
+            top: navBarHost.view.bounds.height - view.safeAreaInsets.top,
+            left: 0,
+            bottom: toolBarHost.view.bounds.height - view.safeAreaInsets.bottom,
+            right: 0
+        )
+        scrollView.contentInset = insets
+        scrollView.scrollIndicatorInsets = insets
+    }
+    
+    // MARK: - UIScrollViewDelegate
+    
+    func scrollViewDidScroll(_ scrollView: UIScrollView) {
+        var scrollViewDelta: CGFloat = 0
+        if let prev = prevScrollViewContentOffset {
+            scrollViewDelta = scrollView.contentOffset.y - prev.y
+        }
+        prevScrollViewContentOffset = scrollView.contentOffset
+        
+        // When certain state changes happen, the scroll view seems to "scroll" by top the safe area inset.
+        // It's not actually user scrolling, and this screws up our animation, so we ignore it.
+        guard abs(scrollViewDelta) != view.safeAreaInsets.top,
+              scrollViewDelta != 0,
+              scrollView.contentOffset.y > 0 else { return }
+        
+        let barAnimator: UIViewPropertyAnimator
+        if let animator = self.barAnimator {
+            barAnimator = animator
+        } else {
+            navBarHost.view.transform = .identity
+            toolBarHost.view.transform = .identity
+            barAnimator = UIViewPropertyAnimator(duration: 0.2, curve: .linear) {
+                self.navBarHost.view.transform = CGAffineTransform(translationX: 0, y: -self.navBarHost.view.frame.height)
+                self.toolBarHost.view.transform = CGAffineTransform(translationX: 0, y: self.toolBarHost.view.frame.height)
+            }
+            if scrollViewDelta < 0 {
+                barAnimator.fractionComplete = 1
+            }
+            barAnimator.addCompletion { (_) in
+                self.barAnimator = nil
+            }
+            self.barAnimator = barAnimator
+        }
+        
+        let progressDelta = scrollViewDelta / navBarHost.view.bounds.height
+        barAnimator.fractionComplete = max(0, min(1, barAnimator.fractionComplete + progressDelta))
+    }
+    
+    func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
+        if let barAnimator = barAnimator {
+            if barAnimator.fractionComplete < 0.5 {
+                barAnimator.isReversed = true
+            }
+            barAnimator.startAnimation()
+        }
+    }
+    
+}

Gemini-iOS/BrowserWebViewController.swift

@@ -1,283 +0,0 @@
-//
-//  BrowserWebViewController.swift
-//  Gemini-iOS
-//
-//  Created by Shadowfacts on 12/16/20.
-//
-
-import UIKit
-import BrowserCore
-import WebKit
-import GeminiProtocol
-import GeminiFormat
-import GeminiRenderer
-import SafariServices
-
-class BrowserWebViewController: UIViewController {
-
-    let navigator: NavigationManager
-    let url: URL
-    
-    weak var scrollViewDelegate: UIScrollViewDelegate? {
-        didSet {
-            if isViewLoaded {
-                webView.scrollView.delegate = scrollViewDelegate
-            }
-        }
-    }
-    
-    private var task: GeminiDataTask?
-    private let renderer = GeminiHTMLRenderer()
-    private(set) var document: Document?
-    private var loaded = false
-    
-    private var errorStack: UIStackView!
-    private var errorMessageLabel: UILabel!
-    private var activityIndicator: UIActivityIndicatorView!
-    private var webView: WKWebView!
-    
-    init(navigator: NavigationManager, url: URL) {
-        self.navigator = navigator
-        self.url = url
-        
-        super.init(nibName: nil, bundle: nil)
-    }
-    
-    required init?(coder: NSCoder) {
-        fatalError("init(coder:) has not been implemented")
-    }
-    
-    override func viewDidLoad() {
-        super.viewDidLoad()
-        
-        let documentURL = self.url
-        renderer.linkPrefix = { (url: URL) -> String in
-            let symbolClass: String
-            if url.scheme == "gemini" {
-                if url.host == documentURL.host {
-                    symbolClass = "arrow-right"
-                } else {
-                    symbolClass = "link"
-                }
-            } else if url.scheme == "http" || url.scheme == "https" {
-                symbolClass = "safari"
-            } else if url.scheme == "mailto" {
-                symbolClass = "envelope"
-            } else {
-                symbolClass = "arrow-up-left-square"
-            }
-            return "<span class=\"symbol \(symbolClass)\" aria-hidden=\"true\"></span>"
-
-        }
-        
-        view.backgroundColor = .systemBackground        
-        
-        webView = WKWebView()
-        webView.backgroundColor = .systemBackground
-        webView.isOpaque = false
-        webView.navigationDelegate = self
-        webView.uiDelegate = self
-        // it is safe to set the delegate of the web view's internal scroll view becuase WebKit takes care of forwarding between its internal delegate and our own
-        webView.scrollView.delegate = scrollViewDelegate
-        // this doesn't default to .default :S
-        webView.scrollView.indicatorStyle = .default
-        webView.translatesAutoresizingMaskIntoConstraints = false
-        view.addSubview(webView)
-        NSLayoutConstraint.activate([
-            webView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
-            webView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
-            webView.topAnchor.constraint(equalTo: view.topAnchor),
-            webView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
-        ])
-        
-        let errorTitle = UILabel()
-        errorTitle.text = "An error occurred"
-        errorTitle.font = UIFont(descriptor: UIFontDescriptor.preferredFontDescriptor(withTextStyle: .headline).withDesign(.serif)!, size: 0)
-        errorTitle.numberOfLines = 0
-        errorMessageLabel = UILabel()
-        errorMessageLabel.font = UIFont(descriptor: UIFontDescriptor.preferredFontDescriptor(withTextStyle: .body).withDesign(.serif)!, size: 0)
-        errorMessageLabel.numberOfLines = 0
-        errorStack = UIStackView(arrangedSubviews: [
-            errorTitle,
-            errorMessageLabel,
-        ])
-        errorStack.translatesAutoresizingMaskIntoConstraints = false
-        errorStack.axis = .vertical
-        errorStack.alignment = .center
-        errorStack.isHidden = true
-        view.addSubview(errorStack)
-        NSLayoutConstraint.activate([
-            errorStack.centerYAnchor.constraint(equalTo: view.centerYAnchor),
-            errorStack.leadingAnchor.constraint(equalTo: view.leadingAnchor),
-            errorStack.trailingAnchor.constraint(equalTo: view.trailingAnchor),
-        ])
-        
-        activityIndicator = UIActivityIndicatorView(style: .large)
-        activityIndicator.translatesAutoresizingMaskIntoConstraints = false
-        activityIndicator.isHidden = true
-        view.addSubview(activityIndicator)
-        NSLayoutConstraint.activate([
-            activityIndicator.centerXAnchor.constraint(equalTo: view.centerXAnchor),
-            activityIndicator.centerYAnchor.constraint(equalTo: view.centerYAnchor),
-        ])
-    }
-    
-    override func viewWillAppear(_ animated: Bool) {
-        super.viewWillAppear(animated)
-        
-        loadDocument()
-    }
-    
-    private func loadDocument() {
-        guard !loaded else { return }
-        
-        webView.isHidden = true
-        errorStack.isHidden = true
-        activityIndicator.isHidden = false
-        activityIndicator.startAnimating()
-        
-        let url = self.url
-        task = try! GeminiDataTask(url: url) { (response) in
-            self.task = nil
-            self.loaded = true
-            
-            switch response {
-            case let .failure(error):
-                DispatchQueue.main.async {
-                    self.showError(message: error.localizedDescription)
-                }
-            case let .success(response):
-                if response.status.isRedirect {
-                    if let redirect = URL(string: response.meta) {
-                        self.navigator.changeURL(redirect)
-                    } else {
-                        DispatchQueue.main.async {
-                            self.showError(message: "Invalid redirect URL: '\(response.meta)'")
-                        }
-                    }
-                } else if response.status.isSuccess,
-                          let text = response.bodyText {
-                    self.renderDocument(GeminiParser.parse(text: text, baseURL: url))
-                } else {
-                    DispatchQueue.main.async {
-                        self.showError(message: "Unknown error: \(response.header)")
-                    }
-                }
-            }
-        }
-        task!.resume()
-    }
-    
-    private func showError(message: String) {
-        webView.isHidden = true
-        errorStack.isHidden = false
-        activityIndicator.isHidden = true
-        activityIndicator.stopAnimating()
-        
-        errorMessageLabel.text = message
-    }
-    
-    private func renderDocument(_ doc: Document) {
-        self.document = doc
-        
-        let html = BrowserWebViewController.preamble + renderer.renderDocumentToHTML(doc) + BrowserWebViewController.postamble
-        DispatchQueue.main.async {
-            self.webView.isHidden = false
-            self.errorStack.isHidden = true
-            self.activityIndicator.isHidden = true
-            self.activityIndicator.stopAnimating()
-            
-            if let title = doc.title {
-                self.navigationItem.title = title
-            }
-            
-            self.webView.loadHTMLString(html, baseURL: Bundle.main.bundleURL)
-        }
-    }
-    
-    func scrollToLine(index: Int, animated: Bool) {
-        if animated {
-            webView.evaluateJavaScript("document.getElementById('l\(index)').getBoundingClientRect().top + window.scrollY") { (result, error) in
-                guard let result = result as? CGFloat else {
-                    return
-                }
-                let scrollView = self.webView.scrollView
-                let y = result * scrollView.zoomScale - scrollView.safeAreaInsets.top
-                let maxY = scrollView.contentSize.height - scrollView.bounds.height + scrollView.safeAreaInsets.bottom
-                let finalOffsetY = min(y, maxY)
-                self.webView.scrollView.setContentOffset(CGPoint(x: 0, y: finalOffsetY), animated: true)
-            }
-        } else {
-            webView.evaluateJavaScript("document.getElementById('l\(index)').scrollIntoView();")
-        }
-    }
-    
-    private static let preamble = """
-    <!doctype html>
-    <html>
-    <head>
-        <meta charset="UTF-8" />
-        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
-        <link rel="stylesheet" href="\(Bundle.main.url(forResource: "browser", withExtension: "css")!.absoluteString)">
-        <style>
-        \(symbolStyles)
-        </style>
-    </head>
-    <body>
-    """
-    
-    private static let symbolStyles = SymbolCache.symbols.map { (k, v) in
-        ".symbol.\(k.replacingOccurrences(of: ".", with: "-")) { background-image: url(\"data:image/png;base64,\(v)\"); }"
-    }.joined(separator: "\n")
-    
-    private static let postamble = """
-    </body>
-    </html>
-    """
-
-}
-
-extension BrowserWebViewController: WKNavigationDelegate {
-    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
-        let url = navigationAction.request.url!
-        if url.scheme == "file" {
-            decisionHandler(.allow)
-        } else {
-            decisionHandler(.cancel)
-            navigator.changeURL(url)
-            loadDocument()
-        }
-    }
-}
-
-extension BrowserWebViewController: WKUIDelegate {
-    func webView(_ webView: WKWebView, contextMenuConfigurationForElement elementInfo: WKContextMenuElementInfo, completionHandler: @escaping (UIContextMenuConfiguration?) -> Void) {
-        guard let url = elementInfo.linkURL,
-              url.scheme == "gemini" || url.scheme == "http" || url.scheme == "https" else {
-            completionHandler(nil)
-            return
-        }
-        let config = UIContextMenuConfiguration(identifier: nil) {
-            if url.scheme == "gemini" {
-                return BrowserWebViewController(navigator: self.navigator, url: url)
-            } else {
-                return SFSafariViewController(url: url)
-            }
-        } actionProvider: { (_) in
-            return nil
-        }
-        completionHandler(config)
-    }
-    
-    func webView(_ webView: WKWebView, contextMenuForElement elementInfo: WKContextMenuElementInfo, willCommitWithAnimator animator: UIContextMenuInteractionCommitAnimating) {
-        animator.preferredCommitStyle = .pop
-        let url = elementInfo.linkURL!
-        animator.addCompletion {
-            if url.scheme == "http" || url.scheme == "https" {
-                self.present(animator.previewViewController!, animated: true)
-            } else {
-                self.navigator.changeURL(url)
-            }
-        }
-    }
-}

Gemini-iOS/ContentView.swift

@@ -0,0 +1,139 @@
+//
+//  ContentView.swift
+//  Gemini-iOS
+//
+//  Created by Shadowfacts on 7/15/20.
+//
+
+import SwiftUI
+import BrowserCore
+
+struct ContentView: View {
+    @ObservedObject private var navigator: NavigationManager
+    @State private var urlFieldContents: String
+    @State private var prevScrollOffset: CGFloat = 0
+    @State private var scrollOffset: CGFloat = 0 {
+        didSet {
+            prevScrollOffset = oldValue
+        }
+    }
+    @State private var barOffset: CGFloat = 0
+    @State private var navBarHeight: CGFloat = 0
+    @State private var toolBarHeight: CGFloat = 0
+    @State private var showShareSheet = false
+
+    init(navigator: NavigationManager) {
+        self.navigator = navigator
+        self._urlFieldContents = State(initialValue: navigator.currentURL.absoluteString)
+    }
+    
+    var body: some View {
+        ZStack {
+            GeometryReader { (outer: GeometryProxy) in
+                ScrollView(.vertical) {
+                    Color.clear.frame(height: navBarHeight)
+                    
+                    BrowserView(navigator: navigator, scrollingEnabled: false)
+                        .background(GeometryReader { (inner: GeometryProxy) in
+                            Color.clear.preference(key: ScrollOffsetPrefKey.self, value: -inner.frame(in: .global).minY + outer.frame(in: .global).minY)
+                        })
+                    
+                    Color.clear.frame(height: toolBarHeight)
+                }
+                .onPreferenceChange(ScrollOffsetPrefKey.self) {
+                    scrollOffset = $0
+                    let delta = scrollOffset - prevScrollOffset
+                    
+                    // When certain state changes happen, the scroll view seems to "scroll" by the top safe area inset.
+                    // It's not actually user scrolling, and this screws up our animation, so we ignore it.
+                    guard abs(delta) != outer.safeAreaInsets.top else { return }
+                    
+                    if scrollOffset < 0 {
+                        barOffset = 0
+                    } else {
+                        if delta != 0 {
+                            barOffset += delta
+                        }
+                        
+                        print(barOffset)
+                        barOffset = max(0, min(navBarHeight + outer.safeAreaInsets.top, barOffset))
+                    }
+                }
+            }
+            
+            VStack(spacing: 0) {
+                NavigationBar(navigator: navigator)
+                    .background(GeometryReader { (geom: GeometryProxy) in
+                        Color.clear.preference(key: NavBarHeightPrefKey.self, value: geom.frame(in: .global).height)
+                    })
+                    .offset(y: -barOffset)
+
+                Spacer()
+                
+                ToolBar(navigator: navigator, showShareSheet: $showShareSheet)
+                    .background(GeometryReader { (geom: GeometryProxy) in
+                        Color.clear.preference(key: ToolBarHeightPrefKey.self, value: geom.frame(in: .global).height)
+                    })
+                    .offset(y: barOffset)
+            }
+            .onPreferenceChange(NavBarHeightPrefKey.self) {
+                navBarHeight = $0
+                print("nav bar height: \($0)")
+            }
+            .onPreferenceChange(ToolBarHeightPrefKey.self) {
+                toolBarHeight = $0
+                print("tool bar height: \($0)")
+            }
+        }
+        .onAppear(perform: tweakAppearance)
+        .onReceive(navigator.$currentURL, perform: { (new) in
+            urlFieldContents = new.absoluteString
+        })
+        .sheet(isPresented: $showShareSheet) {
+            ActivityView(items: [navigator.currentURL], activities: nil)
+        }
+    }
+    
+    private func tweakAppearance() {
+        UIScrollView.appearance().keyboardDismissMode = .interactive
+    }
+    
+    private func commitURL() {
+        guard let url = URL(string: urlFieldContents) else { return }
+        navigator.changeURL(url)
+    }
+}
+
+fileprivate struct ScrollOffsetPrefKey: PreferenceKey {
+    typealias Value = CGFloat
+    static var defaultValue: CGFloat = 0
+    static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
+        value += nextValue()
+    }
+}
+
+fileprivate struct NavBarHeightPrefKey: PreferenceKey {
+    typealias Value = CGFloat
+    static var defaultValue: CGFloat = 0
+    static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
+        value += nextValue()
+    }
+}
+
+fileprivate struct ToolBarHeightPrefKey: PreferenceKey {
+    typealias Value = CGFloat
+    static var defaultValue: CGFloat = 0
+    static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
+        value += nextValue()
+    }
+}
+
+fileprivate enum ScrollDirection {
+    case up, down, none
+}
+
+struct ContentView_Previews: PreviewProvider {
+    static var previews: some View {
+        ContentView(navigator: NavigationManager(url: URL(string: "gemini://localhost/overview.gmi")!))
+    }
+}

Gemini-iOS/NavigationBar.swift

@@ -0,0 +1,51 @@
+//
+//  NavigationBar.swift
+//  Gemini-iOS
+//
+//  Created by Shadowfacts on 9/28/20.
+//
+
+import SwiftUI
+import BrowserCore
+
+struct NavigationBar: View {
+    @ObservedObject var navigator: NavigationManager
+    @State private var urlFieldContents: String
+    
+    @Environment(\.colorScheme) var colorScheme: ColorScheme
+    
+    init(navigator: NavigationManager) {
+        self.navigator = navigator
+        self._urlFieldContents = State(initialValue: navigator.displayURL)
+    }
+    
+    var body: some View {
+        VStack(spacing: 0) {
+            TextField("URL", text: $urlFieldContents, onCommit: commitURL)
+                .keyboardType(.URL)
+                .autocapitalization(.none)
+                .disableAutocorrection(true)
+                .textFieldStyle(RoundedBorderTextFieldStyle())
+                .padding([.leading, .trailing, .bottom])
+            
+            Rectangle()
+                .frame(height: 1)
+                .foregroundColor(Color(white: colorScheme == .dark ? 0.25 : 0.75))
+        }
+        .background(Color(UIColor.systemBackground).edgesIgnoringSafeArea(.top))
+        .onReceive(navigator.$currentURL) { (_) in
+            urlFieldContents = navigator.displayURL
+        }
+    }
+    
+    private func commitURL() {
+        guard let url = URL(string: urlFieldContents) else { return }
+        navigator.changeURL(url)
+    }
+}
+
+struct NavigationBar_Previews: PreviewProvider {
+    static var previews: some View {
+        NavigationBar(navigator: NavigationManager(url: URL(string: "gemini://localhost/overview.gmi")!))
+    }
+}

Gemini-iOS/NavigationBarView.swift

@@ -1,85 +0,0 @@
-//
-//  NavigationBarView.swift
-//  Gemini-iOS
-//
-//  Created by Shadowfacts on 12/19/20.
-//
-
-import UIKit
-import BrowserCore
-import Combine
-
-class NavigationBarView: UIView {
-
-    let navigator: NavigationManager
-    
-    private var border: UIView!
-    private var textField: UITextField!
-    
-    private var cancellables = [AnyCancellable]()
-    
-    init(navigator: NavigationManager) {
-        self.navigator = navigator
-        
-        super.init(frame: .zero)
-        
-        backgroundColor = .systemBackground
-        
-        border = UIView()
-        border.backgroundColor = UIColor(white: traitCollection.userInterfaceStyle == .dark ? 0.25 : 0.75, alpha: 1)
-        border.translatesAutoresizingMaskIntoConstraints = false
-        addSubview(border)
-        NSLayoutConstraint.activate([
-            border.leadingAnchor.constraint(equalTo: leadingAnchor),
-            border.trailingAnchor.constraint(equalTo: trailingAnchor),
-            border.bottomAnchor.constraint(equalTo: bottomAnchor),
-            border.heightAnchor.constraint(equalToConstant: 1),
-        ])
-        
-        textField = UITextField()
-        textField.text = navigator.displayURL
-        textField.borderStyle = .roundedRect
-        textField.keyboardType = .URL
-        textField.autocapitalizationType = .none
-        textField.autocorrectionType = .no
-        textField.addTarget(self, action: #selector(commitURL), for: .editingDidEnd)
-        textField.translatesAutoresizingMaskIntoConstraints = false
-        addSubview(textField)
-        NSLayoutConstraint.activate([
-            textField.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 8),
-            textField.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -8),
-            textField.topAnchor.constraint(equalTo: safeAreaLayoutGuide.topAnchor),
-            textField.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -9),
-        ])
-        
-        navigator.$currentURL
-            .sink { (newURL) in
-                // can't use navigator.displayURL because the publisher fires before the underlying value is updated, so the displayURL getter returns the old value
-                var components = URLComponents(url: newURL, resolvingAgainstBaseURL: false)!
-                if components.port == 1965 {
-                    components.port = nil
-                }
-                self.textField.text = components.string!
-            }
-            .store(in: &cancellables)
-    }
-    
-    required init?(coder: NSCoder) {
-        fatalError("init(coder:) has not been implemented")
-    }
-    
-    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
-        super.traitCollectionDidChange(previousTraitCollection)
-        
-        border.backgroundColor = UIColor(white: traitCollection.userInterfaceStyle == .dark ? 0.25 : 0.75, alpha: 1)
-    }
-    
-    @objc private func commitURL() {
-        if let text = textField.text, let url = URL(string: text) {
-            navigator.changeURL(url)
-        } else {
-            textField.text = navigator.displayURL
-        }
-    }
-
-}

Gemini-iOS/PreferencesView.swift

@@ -23,7 +23,6 @@ struct PreferencesView: View {
             .insetOrGroupedListStyle()
             .navigationBarItems(trailing: doneButton)
         }
-        .navigationViewStyle(StackNavigationViewStyle())
         .onDisappear {
             Preferences.save()
         }

Gemini-iOS/Resources/browser.css

@@ -1,54 +0,0 @@
-:root {
-    color-scheme: light dark;
-}
-
-body {
-    font-family: ui-serif;
-    overflow-wrap: break-word;
-}
-
-pre {
-    font-family: ui-monospace;
-    overflow-wrap: normal;
-    overflow-x: auto;
-    tab-size: 4;
-}
-
-h1, h2, h3 {
-    line-height: 1;
-    font-weight: normal;
-}
-
-p.link {
-    display: block;
-    margin: 4px 0;
-}
-
-a {
-    color: rgb(0, 122, 255);
-}
-
-ul {
-    padding-left: 20px;
-}
-
-.symbol {
-    display: inline-block;
-    float: left;
-    width: 1.25em;
-    height: 1.25em;
-    margin-right: 0.25em;
-    background-size: contain;
-    background-repeat: no-repeat;
-    vertical-align: middle;
-}
-
-@media (prefers-color-scheme: dark) {
-    a {
-        color: rgb(10, 132, 255);
-    }
-    
-    .symbol {
-        filter: invert(100%);
-    }
-}

Gemini-iOS/SceneDelegate.swift

@@ -40,14 +40,13 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
         navigationManager.delegate = self
         
         // Create the SwiftUI view that provides the window contents.
-//        let contentView = ContentView(navigator: navigationManager)
+        let contentView = ContentView(navigator: navigationManager)
 
         // Use a UIHostingController as window root view controller.
         if let windowScene = scene as? UIWindowScene {
             let window = UIWindow(windowScene: windowScene)
             window.overrideUserInterfaceStyle = Preferences.shared.theme
-            window.rootViewController = BrowserNavigationController(navigator: navigationManager)
+            window.rootViewController = UIHostingController(rootView: contentView)
-//            window.rootViewController = UIHostingController(rootView: contentView)
 //            window.rootViewController = BrowserViewController(navigator: navigationManager)
             self.window = window
             window.makeKeyAndVisible()
@@ -99,8 +98,7 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
 extension SceneDelegate: NavigationManagerDelegate {
     func loadNonGeminiURL(_ url: URL) {
         UIApplication.shared.open(url, options: [.universalLinksOnly: true]) { (success) in
-            guard !success else { return }
+            if !success {
-            if url.scheme == "http" || url.scheme == "https" {
                 if Preferences.shared.useInAppSafari {
                     let config = SFSafariViewController.Configuration()
                     config.entersReaderIfAvailable = Preferences.shared.useReaderMode
@@ -109,13 +107,6 @@ extension SceneDelegate: NavigationManagerDelegate {
                 } else {
                     UIApplication.shared.open(url, options: [:])
                 }
-            } else {
-                let alert = UIAlertController(title: "Cannot open '\(url.scheme!)' URL", message: url.absoluteString, preferredStyle: .alert)
-                alert.addAction(UIAlertAction(title: "Copy URL", style: .default, handler: { (_) in
-                    UIPasteboard.general.setObjects([url])
-                }))
-                alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
-                self.window!.rootViewController!.present(alert, animated: true)
             }
         }
     }

Gemini-iOS/SymbolCache.swift

@@ -1,33 +0,0 @@
-//
-//  SymbolCache.swift
-//  Gemini-iOS
-//
-//  Created by Shadowfacts on 12/17/20.
-//
-
-import UIKit
-
-struct SymbolCache {
-    
-    private(set) static var symbols = [String: String]()
-    
-    private static let defaultSymbols = [
-        "arrow.right",
-        "link",
-        "safari",
-        "envelope",
-        "arrow.up.left.square",
-    ]
-    
-    static func load() {
-        defaultSymbols.forEach { loadSymbol(name: $0) }
-    }
-    
-    private static func loadSymbol(name: String) {
-        let config = UIImage.SymbolConfiguration(pointSize: 16)
-        let symbol = UIImage(systemName: name, withConfiguration: config)!
-        let data = symbol.pngData()!
-        symbols[name] = data.base64EncodedString()
-    }
-    
-}

Gemini-iOS/TableOfContentsView.swift

@@ -1,65 +0,0 @@
-//
-//  TableOfContentsView.swift
-//  Gemini-iOS
-//
-//  Created by Shadowfacts on 12/20/20.
-//
-
-import SwiftUI
-import GeminiFormat
-
-struct TableOfContentsView: View {
-    private let entries: [Entry]
-    private let close: (Int?) -> Void
-    
-    init(document: Document, close: @escaping (Int?) -> Void) {
-        let toc = TableOfContents(document: document)
-        self.entries = toc.entries.flatMap { TableOfContentsView.flattenToCEntry($0) }
-        self.close = close
-    }
-    
-    private static func flattenToCEntry(_ e: TableOfContents.Entry, depth: Int = 0) -> [Entry] {
-        guard case let .heading(text, level: _) = e.line else { fatalError() }
-        var entries = e.children.flatMap {
-            flattenToCEntry($0, depth: depth + 1)
-        }
-        entries.insert(Entry(title: text, lineIndex: e.lineIndex, depth: depth), at: 0)
-        return entries
-    }
-    
-    var body: some View {
-        NavigationView {
-            List(Array(entries.enumerated()), id: \.0) { (a) in
-                Button {
-                    close(a.1.lineIndex)
-                } label: {
-                    HStack(spacing: 0) {
-                        Spacer()
-                            .frame(width: CGFloat(a.1.depth * 25))
-                        Text(verbatim: a.1.title)
-                    }
-                }
-            }
-            .listStyle(PlainListStyle())
-            .navigationBarTitle("Table of Contents", displayMode: .inline)
-            .navigationBarItems(trailing: Button("Done", action: {
-                close(nil)
-            }))
-        }
-        .navigationViewStyle(StackNavigationViewStyle())
-    }
-}
-
-extension TableOfContentsView {
-    struct Entry {
-        let title: String
-        let lineIndex: Int
-        let depth: Int
-    }
-}
-
-struct TableOfContentsView_Previews: PreviewProvider {
-    static var previews: some View {
-        TableOfContentsView(document: Document(url: URL(string: "gemini://example.com")!, lines: [])) { (_) in }
-    }
-}

Gemini-iOS/ToolBar.swift

@@ -0,0 +1,125 @@
+//
+//  ToolBar.swift
+//  Gemini-iOS
+//
+//  Created by Shadowfacts on 9/28/20.
+//
+
+import SwiftUI
+import BrowserCore
+
+struct ToolBar: View {
+    @ObservedObject var navigator: NavigationManager
+    @Binding var showShareSheet: Bool
+    @State private var showPreferencesSheet = false
+    
+    @Environment(\.colorScheme) var colorScheme: ColorScheme
+    
+    var body: some View {
+        VStack(spacing: 4) {
+            Rectangle()
+                .frame(height: 1)
+                .foregroundColor(Color(white: colorScheme == .dark ? 0.25 : 0.75))
+            
+            HStack {
+                // use a group because this exceeds the 10 view limit :/
+                Group {
+                    Spacer()
+                    
+                    Button(action: navigator.back) {
+                        Image(systemName: "arrow.left")
+                            .font(.system(size: 24))
+                    }
+                    .accessibility(label: Text("Back"))
+                    .hoverEffect(.highlight)
+                    .contextMenu {
+                        ForEach(Array(navigator.backStack.suffix(5).enumerated()), id: \.1) { (index, url) in
+                            Button {
+                                navigator.back(count: min(5, navigator.backStack.count) - index)
+                            } label: {
+                                Text(verbatim: urlForDisplay(url))
+                            }
+                        }
+                    }
+                    .disabled(navigator.backStack.isEmpty)
+                    
+                    Spacer()
+                    
+                    Button(action: navigator.forward) {
+                        Image(systemName: "arrow.right")
+                            .font(.system(size: 24))
+                    }
+                    .accessibility(label: Text("Forward"))
+                    .hoverEffect(.highlight)
+                    .contextMenu {
+                        ForEach(navigator.forwardStack.prefix(5).enumerated().reversed(), id: \.1) { (index, url) in
+                            Button {
+                                navigator.forward(count: index + 1)
+                            } label: {
+                                Text(verbatim: urlForDisplay(url))
+                            }
+                        }
+                    }
+                    .disabled(navigator.forwardStack.isEmpty)
+                    
+                    Spacer()
+                    
+                    Button(action: navigator.reload) {
+                        Image(systemName: "arrow.clockwise")
+                            .font(.system(size: 24))
+                    }
+                    .accessibility(label: Text("Reload"))
+                    .hoverEffect(.highlight)
+                    
+                    Spacer()
+                    
+                    Button {
+                        showShareSheet = true
+                    } label: {
+                        Image(systemName: "square.and.arrow.up")
+                            .font(.system(size: 24))
+                    }
+                    .accessibility(label: Text("Share"))
+                    .hoverEffect(.highlight)
+                    
+                    Spacer()
+                    
+                    Button(action: {
+                        showPreferencesSheet = true
+                    }, label: {
+                        Image(systemName: "gear")
+                            .font(.system(size: 24))
+                    })
+                    .accessibility(label: Text("Preferences"))
+                    .hoverEffect(.highlight)
+                }
+                
+                Spacer()
+            }
+            
+        }
+        .padding(.bottom, 4)
+        .background(Color(UIColor.systemBackground).edgesIgnoringSafeArea(.bottom))
+        .sheet(isPresented: $showPreferencesSheet, content: {
+            PreferencesView()
+        })
+    }
+    
+    private func urlForDisplay(_ url: URL) -> String {
+        var str = url.host!
+        if let port = url.port,
+           url.scheme != "gemini" || port != 1965 {
+            str += ":\(port)"
+        }
+        str += url.path
+        return str
+    }
+}
+
+struct ToolBar_Previews: PreviewProvider {
+    @State private static var showShareSheet = false
+    
+    static var previews: some View {
+        ToolBar(navigator: NavigationManager(url: URL(string: "gemini://localhost/overview.gmi")!), showShareSheet: $showShareSheet)
+    }
+}

Gemini-iOS/ToolbarView.swift

@@ -1,211 +0,0 @@
-//
-//  ToolbarView.swift
-//  Gemini-iOS
-//
-//  Created by Shadowfacts on 12/19/20.
-//
-
-import UIKit
-import BrowserCore
-import Combine
-
-class ToolbarView: UIView {
-
-    let navigator: NavigationManager
-    
-    var showTableOfContents: (() -> Void)?
-    var showShareSheet: ((UIView) -> Void)?
-    var showPreferences: (() -> Void)?
-    
-    private var border: UIView!
-    private var backButton: UIButton!
-    private var forwardsButton: UIButton!
-    private var reloadButton: UIButton!
-    private var tableOfContentsButton: UIButton!
-    private var shareButton: UIButton!
-    private var prefsButton: UIButton!
-    
-    private var cancellables = [AnyCancellable]()
-    
-    init(navigator: NavigationManager) {
-        self.navigator = navigator
-        
-        super.init(frame: .zero)
-        
-        backgroundColor = .systemBackground
-        
-        border = UIView()
-        border.translatesAutoresizingMaskIntoConstraints = false
-        border.backgroundColor = UIColor(white: traitCollection.userInterfaceStyle == .dark ? 0.25 : 0.75, alpha: 1)
-        addSubview(border)
-        NSLayoutConstraint.activate([
-            border.leadingAnchor.constraint(equalTo: leadingAnchor),
-            border.trailingAnchor.constraint(equalTo: trailingAnchor),
-            border.topAnchor.constraint(equalTo: topAnchor),
-            border.heightAnchor.constraint(equalToConstant: 1),
-        ])
-        
-        let symbolConfig = UIImage.SymbolConfiguration(pointSize: 24)
-        
-        backButton = UIButton()
-        backButton.addTarget(navigator, action: #selector(NavigationManager.goBack), for: .touchUpInside)
-        backButton.isEnabled = navigator.backStack.count > 0
-        backButton.setImage(UIImage(systemName: "arrow.left", withConfiguration: symbolConfig), for: .normal)
-        backButton.accessibilityLabel = "Back"
-        backButton.isPointerInteractionEnabled = true
-        // fallback for when UIButton.menu isn't available
-        if #available(iOS 14.0, *) {
-        } else {
-            backButton.addInteraction(UIContextMenuInteraction(delegate: self))
-        }
-        
-        forwardsButton = UIButton()
-        forwardsButton.addTarget(navigator, action: #selector(NavigationManager.goForward), for: .touchUpInside)
-        forwardsButton.isEnabled = navigator.forwardStack.count > 0
-        forwardsButton.setImage(UIImage(systemName: "arrow.right", withConfiguration: symbolConfig), for: .normal)
-        forwardsButton.accessibilityLabel = "Forward"
-        forwardsButton.isPointerInteractionEnabled = true
-        if #available(iOS 14.0, *) {
-        } else {
-            forwardsButton.addInteraction(UIContextMenuInteraction(delegate: self))
-        }
-        
-        reloadButton = UIButton()
-        reloadButton.addTarget(navigator, action: #selector(NavigationManager.reload), for: .touchUpInside)
-        reloadButton.setImage(UIImage(systemName: "arrow.clockwise", withConfiguration: symbolConfig), for: .normal)
-        reloadButton.accessibilityLabel = "Reload"
-        reloadButton.isPointerInteractionEnabled = true
-        
-        tableOfContentsButton = UIButton()
-        tableOfContentsButton.addTarget(self, action: #selector(tableOfContentsPressed), for: .touchUpInside)
-        tableOfContentsButton.setImage(UIImage(systemName: "list.bullet.indent", withConfiguration: symbolConfig), for: .normal)
-        tableOfContentsButton.accessibilityLabel = "Table of Contents"
-        tableOfContentsButton.isPointerInteractionEnabled = true
-        
-        shareButton = UIButton()
-        shareButton.addTarget(self, action: #selector(sharePressed), for: .touchUpInside)
-        shareButton.setImage(UIImage(systemName: "square.and.arrow.up", withConfiguration: symbolConfig), for: .normal)
-        shareButton.accessibilityLabel = "Share"
-        shareButton.isPointerInteractionEnabled = true
-        
-        prefsButton = UIButton()
-        prefsButton.addTarget(self, action: #selector(prefsPressed), for: .touchUpInside)
-        prefsButton.setImage(UIImage(systemName: "gear", withConfiguration: symbolConfig), for: .normal)
-        prefsButton.accessibilityLabel = "Preferences"
-        prefsButton.isPointerInteractionEnabled = true
-        
-        let stack = UIStackView(arrangedSubviews: [
-            backButton,
-            forwardsButton,
-            reloadButton,
-            tableOfContentsButton,
-            shareButton,
-            prefsButton,
-        ])
-        stack.axis = .horizontal
-        stack.distribution = .fillEqually
-        stack.alignment = .fill
-        stack.translatesAutoresizingMaskIntoConstraints = false
-        addSubview(stack)
-        let safeAreaConstraint = stack.bottomAnchor.constraint(equalTo: safeAreaLayoutGuide.bottomAnchor)
-        safeAreaConstraint.priority = .defaultHigh
-        NSLayoutConstraint.activate([
-            stack.leadingAnchor.constraint(equalTo: leadingAnchor),
-            stack.trailingAnchor.constraint(equalTo: trailingAnchor),
-            stack.topAnchor.constraint(equalTo: topAnchor, constant: 5),
-            safeAreaConstraint,
-            stack.bottomAnchor.constraint(lessThanOrEqualTo: bottomAnchor, constant: -8)
-        ])
-        
-        updateNavigationButtons()
-        
-        navigator.navigationOperation
-            .sink { (_) in
-                self.updateNavigationButtons()
-            }
-            .store(in: &cancellables)
-    }
-    
-    required init?(coder: NSCoder) {
-        fatalError("init(coder:) has not been implemented")
-    }
-    
-    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
-        super.traitCollectionDidChange(previousTraitCollection)
-        
-        border.backgroundColor = UIColor(white: traitCollection.userInterfaceStyle == .dark ? 0.25 : 0.75, alpha: 1)
-    }
-    
-    private func urlForDisplay(_ url: URL) -> String {
-        var str = url.host!
-        if let port = url.port,
-           url.scheme != "gemini" || port != 1965 {
-            str += ":\(port)"
-        }
-        str += url.path
-        return str
-    }
-    
-    private func updateNavigationButtons() {
-        backButton.isEnabled = navigator.backStack.count > 0
-        forwardsButton.isEnabled = navigator.forwardStack.count > 0
-        
-        if #available(iOS 14.0, *) {
-            let back = navigator.backStack.suffix(5).enumerated().reversed().map { (index, url) -> UIAction in
-                let backCount = min(5, navigator.backStack.count) - index
-                return UIAction(title: urlForDisplay(url)) { (_) in
-                    self.navigator.back(count: backCount)
-                }
-            }
-            backButton.menu = UIMenu(children: back)
-
-            let forward = navigator.forwardStack.prefix(5).enumerated().map { (index, url) -> UIAction in
-                let forwardCount = index + 1
-                return UIAction(title: urlForDisplay(url)) { (_) in
-                    self.navigator.forward(count: forwardCount)
-                }
-            }
-            forwardsButton.menu = UIMenu(children: forward)
-        }
-    }
-    
-    @objc private func tableOfContentsPressed() {
-        showTableOfContents?()
-    }
-    
-    @objc private func sharePressed() {
-        showShareSheet?(shareButton)
-    }
-    
-    @objc private func prefsPressed() {
-        showPreferences?()
-    }
-
-}
-
-extension ToolbarView: UIContextMenuInteractionDelegate {
-    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, configurationForMenuAtLocation location: CGPoint) -> UIContextMenuConfiguration? {
-        if interaction.view == backButton {
-            return UIContextMenuConfiguration(identifier: nil, previewProvider: { nil }) { (_) -> UIMenu? in
-                let children = self.navigator.backStack.suffix(5).enumerated().map { (index, url) in
-                    UIAction(title: self.urlForDisplay(url)) { (_) in
-                        self.navigator.back(count: min(5, self.navigator.backStack.count) - index)
-                    }
-                }
-                return UIMenu(title: "", image: nil, identifier: nil, options: [], children: children)
-            }
-        } else if interaction.view == forwardsButton {
-            return UIContextMenuConfiguration(identifier: nil, previewProvider: { nil }) { (_) -> UIMenu? in
-                let children = self.navigator.forwardStack.prefix(5).enumerated().map { (index, url) -> UIAction in
-                    let forwardCount = index + 1
-                    return UIAction(title: self.urlForDisplay(url)) { (_) in
-                        self.navigator.forward(count: forwardCount)
-                    }
-                }
-                return UIMenu(title: "", image: nil, identifier: nil, options: [], children: children)
-            }
-        } else {
-            return nil
-        }
-    }
-}

Gemini-iOS/TrackpadScrollGestureRecognizer.swift

@@ -1,22 +0,0 @@
-//
-//  TrackpadScrollGestureRecognizer.swift
-//  Gemini-iOS
-//
-//  Created by Shadowfacts on 12/16/20.
-//
-
-import UIKit
-
-class TrackpadScrollGestureRecognizer: UIPanGestureRecognizer {
-
-    override init(target: Any?, action: Selector?) {
-        super.init(target: target, action: action)
-        
-        self.allowedScrollTypesMask = .all
-    }
-    
-    override func shouldReceive(_ event: UIEvent) -> Bool {
-        return event.type == .scroll
-    }
-    
-}

Gemini-iOS/UIViewController+Children.swift

@@ -1,86 +0,0 @@
-//
-//  UIViewController+Children.swift
-//  Gemini-iOS
-//
-//  Created by Shadowfacts on 12/17/20.
-//
-
-import UIKit
-
-// Based on MVCTodo by Dave DeLong: https://github.com/davedelong/MVCTodo/blob/841649dd6aa31bacda3ad7ef9a9a836f66281e50/MVCTodo/Extensions/UIViewController.swift
-extension UIViewController {
-    func embedChild(_ newChild: UIViewController, in container: UIView? = nil) {
-        // if the view controller is already a child of something else, remove it
-        if let oldParent = newChild.parent, oldParent != self {
-            newChild.beginAppearanceTransition(false, animated: false)
-            newChild.willMove(toParent: nil)
-            newChild.removeFromParent()
-            
-            if newChild.viewIfLoaded?.superview != nil {
-                newChild.viewIfLoaded?.removeFromSuperview()
-            }
-            
-            newChild.endAppearanceTransition()
-        }
-        
-        // since .view returns an IUO, by default the type of this is "UIView?"
-        // explicitly type the variable because We Know Better™
-        var targetContainer: UIView = container ?? self.view
-        if !targetContainer.isContainedWithin(view) {
-            targetContainer = view
-        }
-        
-        // add the view controller as a child
-        if newChild.parent != self {
-            newChild.beginAppearanceTransition(true, animated: false)
-            addChild(newChild)
-            newChild.didMove(toParent: self)
-            targetContainer.embedSubview(newChild.view)
-            newChild.endAppearanceTransition()
-        } else {
-            // the view controller is already a child
-            // make sure it's in the right view
-            
-            // we don't do the appearance transition stuff here,
-            // because the vc is already a child, so *presumably*
-            // that transition stuff has already appened
-            targetContainer.embedSubview(newChild.view)
-        }
-    }
-    
-    func removeViewAndController() {
-        view.removeFromSuperview()
-        removeFromParent()
-    }
-}
-
-// Based on MVCTodo by Dave DeLong: https://github.com/davedelong/MVCTodo/blob/841649dd6aa31bacda3ad7ef9a9a836f66281e50/MVCTodo/Extensions/UIView.swift
-extension UIView {
-    func embedSubview(_ subview: UIView) {
-        if subview.superview == self { return }
-        
-        if subview.superview != nil {
-            subview.removeFromSuperview()
-        }
-        
-        subview.frame = bounds
-        addSubview(subview)
-        
-        NSLayoutConstraint.activate([
-            subview.leadingAnchor.constraint(equalTo: leadingAnchor),
-            subview.trailingAnchor.constraint(equalTo: trailingAnchor),
-            subview.topAnchor.constraint(equalTo: topAnchor),
-            subview.bottomAnchor.constraint(equalTo: bottomAnchor)
-        ])
-    }
-    
-    func isContainedWithin(_ other: UIView) -> Bool {
-        var current: UIView? = self
-        while let proposedView = current {
-            if proposedView == other { return true }
-            current = proposedView.superview
-        }
-        return false
-    }
-}
-

Gemini.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 52;
+	objectVersion = 50;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -36,32 +36,23 @@
 		D62664EE24BC0BCE00DF9B88 /* MaybeLazyVStack.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62664ED24BC0BCE00DF9B88 /* MaybeLazyVStack.swift */; };
 		D62664F024BC0D7700DF9B88 /* GeminiFormat.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D62664A824BBF26A00DF9B88 /* GeminiFormat.framework */; };
 		D62664FA24BC12BC00DF9B88 /* DocumentTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62664F924BC12BC00DF9B88 /* DocumentTests.swift */; };
+		D62BCEE2252553620031D894 /* ActivityView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62BCEE1252553620031D894 /* ActivityView.swift */; };
 		D664673624BD07F700B0B741 /* RenderingBlock.swift in Sources */ = {isa = PBXBuildFile; fileRef = D664673524BD07F700B0B741 /* RenderingBlock.swift */; };
 		D664673824BD086F00B0B741 /* RenderingBlockView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D664673724BD086F00B0B741 /* RenderingBlockView.swift */; };
 		D664673A24BD0B8E00B0B741 /* Fonts.swift in Sources */ = {isa = PBXBuildFile; fileRef = D664673924BD0B8E00B0B741 /* Fonts.swift */; };
-		D688F586258AC738003A0A73 /* GeminiHTMLRenderer.swift in Sources */ = {isa = PBXBuildFile; fileRef = D688F585258AC738003A0A73 /* GeminiHTMLRenderer.swift */; };
-		D688F590258AC814003A0A73 /* HTMLEntities in Frameworks */ = {isa = PBXBuildFile; productRef = D688F58F258AC814003A0A73 /* HTMLEntities */; };
-		D688F599258ACAAE003A0A73 /* BrowserWebViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D688F598258ACAAE003A0A73 /* BrowserWebViewController.swift */; };
-		D688F5FF258ACE6B003A0A73 /* browser.css in Resources */ = {isa = PBXBuildFile; fileRef = D688F5FE258ACE6B003A0A73 /* browser.css */; };
-		D688F633258B09BB003A0A73 /* TrackpadScrollGestureRecognizer.swift in Sources */ = {isa = PBXBuildFile; fileRef = D688F632258B09BB003A0A73 /* TrackpadScrollGestureRecognizer.swift */; };
-		D688F64A258C17F3003A0A73 /* SymbolCache.swift in Sources */ = {isa = PBXBuildFile; fileRef = D688F649258C17F3003A0A73 /* SymbolCache.swift */; };
-		D688F65A258C2256003A0A73 /* BrowserNavigationController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D688F659258C2256003A0A73 /* BrowserNavigationController.swift */; };
-		D688F663258C2479003A0A73 /* UIViewController+Children.swift in Sources */ = {isa = PBXBuildFile; fileRef = D688F662258C2479003A0A73 /* UIViewController+Children.swift */; };
 		D691A64E25217C6F00348C4B /* Preferences.swift in Sources */ = {isa = PBXBuildFile; fileRef = D691A64D25217C6F00348C4B /* Preferences.swift */; };
 		D691A66725217FD800348C4B /* PreferencesView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D691A66625217FD800348C4B /* PreferencesView.swift */; };
+		D691A68725223A4700348C4B /* NavigationBar.swift in Sources */ = {isa = PBXBuildFile; fileRef = D691A68625223A4600348C4B /* NavigationBar.swift */; };
+		D691A6A0252242FC00348C4B /* ToolBar.swift in Sources */ = {isa = PBXBuildFile; fileRef = D691A69F252242FC00348C4B /* ToolBar.swift */; };
 		D69F00AC24BE9DD300E37622 /* GeminiDataTask.swift in Sources */ = {isa = PBXBuildFile; fileRef = D69F00AB24BE9DD300E37622 /* GeminiDataTask.swift */; };
 		D69F00AE24BEA29100E37622 /* GeminiResponse.swift in Sources */ = {isa = PBXBuildFile; fileRef = D69F00AD24BEA29100E37622 /* GeminiResponse.swift */; };
-		D6BC9AB3258E8E13008652BC /* ToolbarView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6BC9AB2258E8E13008652BC /* ToolbarView.swift */; };
-		D6BC9ABC258E9862008652BC /* NavigationBarView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6BC9ABB258E9862008652BC /* NavigationBarView.swift */; };
-		D6BC9AC5258F01F6008652BC /* TableOfContents.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6BC9AC4258F01F6008652BC /* TableOfContents.swift */; };
-		D6BC9ACE258F07BC008652BC /* TableOfContentsTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6BC9ACD258F07BC008652BC /* TableOfContentsTests.swift */; };
-		D6BC9AD7258FC8B3008652BC /* TableOfContentsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6BC9AD6258FC8B3008652BC /* TableOfContentsView.swift */; };
 		D6DA5783252396030048B65A /* View+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DA5782252396030048B65A /* View+Extensions.swift */; };
 		D6E1529824BFAAA400FDF9D3 /* BrowserWindowController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6E1529624BFAAA400FDF9D3 /* BrowserWindowController.swift */; };
 		D6E1529924BFAAA400FDF9D3 /* BrowserWindowController.xib in Resources */ = {isa = PBXBuildFile; fileRef = D6E1529724BFAAA400FDF9D3 /* BrowserWindowController.xib */; };
 		D6E1529B24BFAEC700FDF9D3 /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = D6E1529A24BFAEC700FDF9D3 /* MainMenu.xib */; };
 		D6E152A524BFFDF500FDF9D3 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6E152A424BFFDF500FDF9D3 /* AppDelegate.swift */; };
 		D6E152A724BFFDF500FDF9D3 /* SceneDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6E152A624BFFDF500FDF9D3 /* SceneDelegate.swift */; };
+		D6E152A924BFFDF500FDF9D3 /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6E152A824BFFDF500FDF9D3 /* ContentView.swift */; };
 		D6E152AB24BFFDF600FDF9D3 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = D6E152AA24BFFDF600FDF9D3 /* Assets.xcassets */; };
 		D6E152AE24BFFDF600FDF9D3 /* Preview Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = D6E152AD24BFFDF600FDF9D3 /* Preview Assets.xcassets */; };
 		D6E152B124BFFDF600FDF9D3 /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = D6E152AF24BFFDF600FDF9D3 /* LaunchScreen.storyboard */; };
@@ -303,26 +294,18 @@
 		D62664EB24BC0B4D00DF9B88 /* DocumentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DocumentView.swift; sourceTree = "<group>"; };
 		D62664ED24BC0BCE00DF9B88 /* MaybeLazyVStack.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MaybeLazyVStack.swift; sourceTree = "<group>"; };
 		D62664F924BC12BC00DF9B88 /* DocumentTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DocumentTests.swift; sourceTree = "<group>"; };
+		D62BCEE1252553620031D894 /* ActivityView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ActivityView.swift; sourceTree = "<group>"; };
 		D664673524BD07F700B0B741 /* RenderingBlock.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RenderingBlock.swift; sourceTree = "<group>"; };
 		D664673724BD086F00B0B741 /* RenderingBlockView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RenderingBlockView.swift; sourceTree = "<group>"; };
 		D664673924BD0B8E00B0B741 /* Fonts.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Fonts.swift; sourceTree = "<group>"; };
-		D688F585258AC738003A0A73 /* GeminiHTMLRenderer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GeminiHTMLRenderer.swift; sourceTree = "<group>"; };
-		D688F598258ACAAE003A0A73 /* BrowserWebViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BrowserWebViewController.swift; sourceTree = "<group>"; };
-		D688F5FE258ACE6B003A0A73 /* browser.css */ = {isa = PBXFileReference; lastKnownFileType = text.css; path = browser.css; sourceTree = "<group>"; };
-		D688F632258B09BB003A0A73 /* TrackpadScrollGestureRecognizer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrackpadScrollGestureRecognizer.swift; sourceTree = "<group>"; };
-		D688F649258C17F3003A0A73 /* SymbolCache.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SymbolCache.swift; sourceTree = "<group>"; };
-		D688F659258C2256003A0A73 /* BrowserNavigationController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BrowserNavigationController.swift; sourceTree = "<group>"; };
-		D688F662258C2479003A0A73 /* UIViewController+Children.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UIViewController+Children.swift"; sourceTree = "<group>"; };
 		D691A64D25217C6F00348C4B /* Preferences.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Preferences.swift; sourceTree = "<group>"; };
 		D691A66625217FD800348C4B /* PreferencesView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PreferencesView.swift; sourceTree = "<group>"; };
+		D691A6762522382E00348C4B /* BrowserViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BrowserViewController.swift; sourceTree = "<group>"; };
+		D691A68625223A4600348C4B /* NavigationBar.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NavigationBar.swift; sourceTree = "<group>"; };
+		D691A69F252242FC00348C4B /* ToolBar.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ToolBar.swift; sourceTree = "<group>"; };
 		D69F00AB24BE9DD300E37622 /* GeminiDataTask.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GeminiDataTask.swift; sourceTree = "<group>"; };
 		D69F00AD24BEA29100E37622 /* GeminiResponse.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GeminiResponse.swift; sourceTree = "<group>"; };
 		D69F00AF24BEA84D00E37622 /* NavigationManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NavigationManager.swift; sourceTree = "<group>"; };
-		D6BC9AB2258E8E13008652BC /* ToolbarView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ToolbarView.swift; sourceTree = "<group>"; };
-		D6BC9ABB258E9862008652BC /* NavigationBarView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NavigationBarView.swift; sourceTree = "<group>"; };
-		D6BC9AC4258F01F6008652BC /* TableOfContents.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TableOfContents.swift; sourceTree = "<group>"; };
-		D6BC9ACD258F07BC008652BC /* TableOfContentsTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TableOfContentsTests.swift; sourceTree = "<group>"; };
-		D6BC9AD6258FC8B3008652BC /* TableOfContentsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TableOfContentsView.swift; sourceTree = "<group>"; };
 		D6DA5782252396030048B65A /* View+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "View+Extensions.swift"; sourceTree = "<group>"; };
 		D6E1529624BFAAA400FDF9D3 /* BrowserWindowController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BrowserWindowController.swift; sourceTree = "<group>"; };
 		D6E1529724BFAAA400FDF9D3 /* BrowserWindowController.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = BrowserWindowController.xib; sourceTree = "<group>"; };
@@ -330,6 +313,7 @@
 		D6E152A224BFFDF500FDF9D3 /* Gemini-iOS.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = "Gemini-iOS.app"; sourceTree = BUILT_PRODUCTS_DIR; };
 		D6E152A424BFFDF500FDF9D3 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		D6E152A624BFFDF500FDF9D3 /* SceneDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SceneDelegate.swift; sourceTree = "<group>"; };
+		D6E152A824BFFDF500FDF9D3 /* ContentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContentView.swift; sourceTree = "<group>"; };
 		D6E152AA24BFFDF600FDF9D3 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		D6E152AD24BFFDF600FDF9D3 /* Preview Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = "Preview Assets.xcassets"; sourceTree = "<group>"; };
 		D6E152B024BFFDF600FDF9D3 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
@@ -389,7 +373,6 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				D688F590258AC814003A0A73 /* HTMLEntities in Frameworks */,
 				D62664F024BC0D7700DF9B88 /* GeminiFormat.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -522,7 +505,6 @@
 				D62664AB24BBF26A00DF9B88 /* Info.plist */,
 				D62664C724BBF2C600DF9B88 /* Document.swift */,
 				D62664C524BBF27300DF9B88 /* GeminiParser.swift */,
-				D6BC9AC4258F01F6008652BC /* TableOfContents.swift */,
 			);
 			path = GeminiFormat;
 			sourceTree = "<group>";
@@ -532,7 +514,6 @@
 			children = (
 				D62664F924BC12BC00DF9B88 /* DocumentTests.swift */,
 				D62664B724BBF26A00DF9B88 /* GeminiParserTests.swift */,
-				D6BC9ACD258F07BC008652BC /* TableOfContentsTests.swift */,
 				D62664B924BBF26A00DF9B88 /* Info.plist */,
 			);
 			path = GeminiFormatTests;
@@ -549,7 +530,6 @@
 				D62664EB24BC0B4D00DF9B88 /* DocumentView.swift */,
 				D664673724BD086F00B0B741 /* RenderingBlockView.swift */,
 				D6DA5782252396030048B65A /* View+Extensions.swift */,
-				D688F585258AC738003A0A73 /* GeminiHTMLRenderer.swift */,
 			);
 			path = GeminiRenderer;
 			sourceTree = "<group>";
@@ -570,30 +550,18 @@
 			name = Frameworks;
 			sourceTree = "<group>";
 		};
-		D688F618258AD231003A0A73 /* Resources */ = {
-			isa = PBXGroup;
-			children = (
-				D688F5FE258ACE6B003A0A73 /* browser.css */,
-			);
-			path = Resources;
-			sourceTree = "<group>";
-		};
 		D6E152A324BFFDF500FDF9D3 /* Gemini-iOS */ = {
 			isa = PBXGroup;
 			children = (
 				D6E152A424BFFDF500FDF9D3 /* AppDelegate.swift */,
 				D6E152A624BFFDF500FDF9D3 /* SceneDelegate.swift */,
-				D688F649258C17F3003A0A73 /* SymbolCache.swift */,
+				D691A6762522382E00348C4B /* BrowserViewController.swift */,
-				D688F659258C2256003A0A73 /* BrowserNavigationController.swift */,
+				D6E152A824BFFDF500FDF9D3 /* ContentView.swift */,
-				D688F598258ACAAE003A0A73 /* BrowserWebViewController.swift */,
+				D691A68625223A4600348C4B /* NavigationBar.swift */,
-				D688F632258B09BB003A0A73 /* TrackpadScrollGestureRecognizer.swift */,
+				D691A69F252242FC00348C4B /* ToolBar.swift */,
-				D688F662258C2479003A0A73 /* UIViewController+Children.swift */,
-				D6BC9AB2258E8E13008652BC /* ToolbarView.swift */,
-				D6BC9ABB258E9862008652BC /* NavigationBarView.swift */,
-				D6BC9AD6258FC8B3008652BC /* TableOfContentsView.swift */,
 				D691A64D25217C6F00348C4B /* Preferences.swift */,
 				D691A66625217FD800348C4B /* PreferencesView.swift */,
-				D688F618258AD231003A0A73 /* Resources */,
+				D62BCEE1252553620031D894 /* ActivityView.swift */,
 				D6E152AA24BFFDF600FDF9D3 /* Assets.xcassets */,
 				D6E152AF24BFFDF600FDF9D3 /* LaunchScreen.storyboard */,
 				D6E152B224BFFDF600FDF9D3 /* Info.plist */,
@@ -780,9 +748,6 @@
 				D68544302522E10F004C4AE0 /* PBXTargetDependency */,
 			);
 			name = GeminiRenderer;
-			packageProductDependencies = (
-				D688F58F258AC814003A0A73 /* HTMLEntities */,
-			);
 			productName = GeminiRenderer;
 			productReference = D62664CE24BC081B00DF9B88 /* GeminiRenderer.framework */;
 			productType = "com.apple.product-type.framework";
@@ -925,9 +890,6 @@
 				Base,
 			);
 			mainGroup = D626645224BBF1C200DF9B88;
-			packageReferences = (
-				D688F58E258AC814003A0A73 /* XCRemoteSwiftPackageReference "swift-html-entities" */,
-			);
 			productRefGroup = D626645C24BBF1C200DF9B88 /* Products */;
 			projectDirPath = "";
 			projectRoot = "";
@@ -1006,7 +968,6 @@
 			files = (
 				D6E152B124BFFDF600FDF9D3 /* LaunchScreen.storyboard in Resources */,
 				D6E152AE24BFFDF600FDF9D3 /* Preview Assets.xcassets in Resources */,
-				D688F5FF258ACE6B003A0A73 /* browser.css in Resources */,
 				D6E152AB24BFFDF600FDF9D3 /* Assets.xcassets in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -1066,7 +1027,6 @@
 			files = (
 				D62664C824BBF2C600DF9B88 /* Document.swift in Sources */,
 				D62664C624BBF27300DF9B88 /* GeminiParser.swift in Sources */,
-				D6BC9AC5258F01F6008652BC /* TableOfContents.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -1075,7 +1035,6 @@
 			buildActionMask = 2147483647;
 			files = (
 				D62664FA24BC12BC00DF9B88 /* DocumentTests.swift in Sources */,
-				D6BC9ACE258F07BC008652BC /* TableOfContentsTests.swift in Sources */,
 				D62664B824BBF26A00DF9B88 /* GeminiParserTests.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -1089,7 +1048,6 @@
 				D62664EE24BC0BCE00DF9B88 /* MaybeLazyVStack.swift in Sources */,
 				D62664EC24BC0B4D00DF9B88 /* DocumentView.swift in Sources */,
 				D6DA5783252396030048B65A /* View+Extensions.swift in Sources */,
-				D688F586258AC738003A0A73 /* GeminiHTMLRenderer.swift in Sources */,
 				D664673824BD086F00B0B741 /* RenderingBlockView.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -1107,17 +1065,13 @@
 			buildActionMask = 2147483647;
 			files = (
 				D691A66725217FD800348C4B /* PreferencesView.swift in Sources */,
-				D688F599258ACAAE003A0A73 /* BrowserWebViewController.swift in Sources */,
-				D688F633258B09BB003A0A73 /* TrackpadScrollGestureRecognizer.swift in Sources */,
 				D6E152A524BFFDF500FDF9D3 /* AppDelegate.swift in Sources */,
+				D691A6A0252242FC00348C4B /* ToolBar.swift in Sources */,
 				D6E152A724BFFDF500FDF9D3 /* SceneDelegate.swift in Sources */,
-				D6BC9AB3258E8E13008652BC /* ToolbarView.swift in Sources */,
+				D62BCEE2252553620031D894 /* ActivityView.swift in Sources */,
-				D688F64A258C17F3003A0A73 /* SymbolCache.swift in Sources */,
+				D691A68725223A4700348C4B /* NavigationBar.swift in Sources */,
-				D688F65A258C2256003A0A73 /* BrowserNavigationController.swift in Sources */,
-				D6BC9AD7258FC8B3008652BC /* TableOfContentsView.swift in Sources */,
-				D688F663258C2479003A0A73 /* UIViewController+Children.swift in Sources */,
 				D691A64E25217C6F00348C4B /* Preferences.swift in Sources */,
-				D6BC9ABC258E9862008652BC /* NavigationBarView.swift in Sources */,
+				D6E152A924BFFDF500FDF9D3 /* ContentView.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -1995,25 +1949,6 @@
 			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
-
-/* Begin XCRemoteSwiftPackageReference section */
-		D688F58E258AC814003A0A73 /* XCRemoteSwiftPackageReference "swift-html-entities" */ = {
-			isa = XCRemoteSwiftPackageReference;
-			repositoryURL = "https://github.com/Kitura/swift-html-entities";
-			requirement = {
-				kind = upToNextMajorVersion;
-				minimumVersion = 3.0.200;
-			};
-		};
-/* End XCRemoteSwiftPackageReference section */
-
-/* Begin XCSwiftPackageProductDependency section */
-		D688F58F258AC814003A0A73 /* HTMLEntities */ = {
-			isa = XCSwiftPackageProductDependency;
-			package = D688F58E258AC814003A0A73 /* XCRemoteSwiftPackageReference "swift-html-entities" */;
-			productName = HTMLEntities;
-		};
-/* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = D626645324BBF1C200DF9B88 /* Project object */;
 }

Gemini.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -1,16 +0,0 @@
-{
-  "object": {
-    "pins": [
-      {
-        "package": "HTMLEntities",
-        "repositoryURL": "https://github.com/Kitura/swift-html-entities",
-        "state": {
-          "branch": null,
-          "revision": "2b14531d0c36dbb7c1c45a4d38db9c2e7898a307",
-          "version": "3.0.200"
-        }
-      }
-    ]
-  },
-  "version": 1
-}

Gemini/BrowserWindowController.swift

@@ -137,11 +137,11 @@ extension BrowserWindowController: NSToolbarDelegate {
     }
     
     @objc private func back() {
-        navigator.goBack()
+        navigator.back()
     }
     
     @objc private func forward() {
-        navigator.goForward()
+        navigator.forward()
     }
     
 }

GeminiFormat/Document.swift

@@ -21,13 +21,6 @@ public struct Document {
         // todo: should this be \r\n
         return lines.map { $0.geminiText() }.joined(separator: "\n")
     }
-    
-    public var title: String? {
-        for case let .heading(text, level: _) in lines {
-            return text
-        }
-        return nil
-    }
 }
 
 public extension Document {
@@ -70,7 +63,7 @@ public extension Document {
 }
 
 public extension Document {
-    enum HeadingLevel: Int, Comparable {
+    enum HeadingLevel: Int {
         case h1 = 1, h2 = 2, h3 = 3
         
         var geminiText: String {
@@ -83,9 +76,5 @@ public extension Document {
                 return "###"
             }
         }
-        
-        public static func < (lhs: Document.HeadingLevel, rhs: Document.HeadingLevel) -> Bool {
-            return lhs.rawValue < rhs.rawValue
-        }
     }
 }

GeminiFormat/TableOfContents.swift

@@ -1,71 +0,0 @@
-//
-//  TableOfContents.swift
-//  GeminiFormat
-//
-//  Created by Shadowfacts on 12/19/20.
-//
-
-import Foundation
-
-public struct TableOfContents {
-    public let entries: [Entry]
-    
-    public init(document: Document) {
-        self.entries = TableOfContents.entries(lines: document.lines)
-    }
-    
-    private static func entries(lines: [Document.Line]) -> [Entry] {
-        var topLevelEntries = [Entry]()
-        
-        var currentEntries = [Entry]()
-        
-        var index = 0
-        while index < lines.count {
-            defer { index += 1 }
-            
-            let line = lines[index]
-            guard case let .heading(_, level: level) = line else {
-                continue
-            }
-            
-            let newEntry = Entry(line: line, lineIndex: index)
-            
-            while !currentEntries.isEmpty && level <= currentEntries.last!.level {
-                currentEntries.removeLast()
-            }
-            
-            if let last = currentEntries.last {
-                last.children.append(newEntry)
-                currentEntries.append(newEntry)
-            } else {
-                topLevelEntries.append(newEntry)
-                currentEntries.append(newEntry)
-            }
-            
-        }
-        
-        return topLevelEntries
-    }
-    
-}
-
-public extension TableOfContents {
-    class Entry: Equatable {
-        public let line: Document.Line
-        let level: Document.HeadingLevel
-        public let lineIndex: Int
-        public fileprivate(set) var children: [Entry]
-        
-        init(line: Document.Line, lineIndex: Int) {
-            guard case let .heading(_, level: level) = line else { fatalError() }
-            self.line = line
-            self.level = level
-            self.lineIndex = lineIndex
-            self.children = []
-        }
-        
-        public static func ==(lhs: Entry, rhs: Entry) -> Bool {
-            return lhs.line == rhs.line && lhs.lineIndex == rhs.lineIndex && lhs.children == rhs.children
-        }
-    }
-}

GeminiFormatTests/TableOfContentsTests.swift

@@ -1,148 +0,0 @@
-//
-//  TableOfContentsTests.swift
-//  GeminiFormatTests
-//
-//  Created by Shadowfacts on 12/19/20.
-//
-
-import XCTest
-@testable import GeminiFormat
-
-class TableOfContentsTests: XCTestCase {
-    
-    func testOneHeading() {
-        let one = Document(url: URL(string: "gemini://example.com/")!, lines: [
-            .heading("Heading", level: .h1)
-        ])
-        XCTAssertEqual(TableOfContents(document: one).entries, [
-            .init(line: .heading("Heading", level: .h1), lineIndex: 0)
-        ])
-        
-        let two = Document(url: URL(string: "gemini://example.com/")!, lines: [
-            .heading("Heading", level: .h2)
-        ])
-        XCTAssertEqual(TableOfContents(document: two).entries, [
-            .init(line: .heading("Heading", level: .h2), lineIndex: 0)
-        ])
-        
-        let three = Document(url: URL(string: "gemini://example.com/")!, lines: [
-            .heading("Heading", level: .h3)
-        ])
-        XCTAssertEqual(TableOfContents(document: three).entries, [
-            .init(line: .heading("Heading", level: .h3), lineIndex: 0)
-        ])
-    }
-    
-    func testMultipleTopLevelHeadings() {
-        let doc = Document(url: URL(string: "gemini://example.com")!, lines: [
-            .heading("One", level: .h1),
-            .heading("Two", level: .h1),
-        ])
-        XCTAssertEqual(TableOfContents(document: doc).entries, [
-            .init(line: .heading("One", level: .h1), lineIndex: 0),
-            .init(line: .heading("Two", level: .h1), lineIndex: 1)
-        ])
-    }
-    
-    func testNestedHeadings() {
-        let doc = Document(url: URL(string: "gemini://example.com")!, lines: [
-            .heading("One", level: .h1),
-            .heading("Two", level: .h2),
-        ])
-        let entries = TableOfContents(document: doc).entries
-        XCTAssertEqual(entries.count, 1)
-        XCTAssertEqual(entries[0].line, .heading("One", level: .h1))
-        XCTAssertEqual(entries[0].lineIndex, 0)
-        XCTAssertEqual(entries[0].children, [
-            .init(line: .heading("Two", level: .h2), lineIndex: 1)
-        ])
-    }
-    
-    func testTriplyNestedHeadings() {
-        let doc = Document(url: URL(string: "gemini://example.com")!, lines: [
-            .heading("One", level: .h1),
-            .heading("Two", level: .h2),
-            .heading("Three", level: .h3),
-        ])
-        let entries = TableOfContents(document: doc).entries
-        XCTAssertEqual(entries.count, 1)
-        XCTAssertEqual(entries[0].line, .heading("One", level: .h1))
-        XCTAssertEqual(entries[0].lineIndex, 0)
-        XCTAssertEqual(entries[0].children.count, 1)
-        XCTAssertEqual(entries[0].children[0].line, .heading("Two", level: .h2))
-        XCTAssertEqual(entries[0].children[0].lineIndex, 1)
-        XCTAssertEqual(entries[0].children[0].children, [
-            .init(line: .heading("Three", level: .h3), lineIndex: 2)
-        ])
-    }
-    
-    func testMultipleTopLevelSections() {
-        let doc = Document(url: URL(string: "gemini://example.com")!, lines: [
-            .heading("Top Level One", level: .h1),
-            .heading("A", level: .h2),
-            .heading("Top Level Two", level: .h1),
-            .heading("B", level: .h2),
-        ])
-        let entries = TableOfContents(document: doc).entries
-        XCTAssertEqual(entries.count, 2)
-        let first = entries[0]
-        XCTAssertEqual(first.line, .heading("Top Level One", level: .h1))
-        XCTAssertEqual(first.lineIndex, 0)
-        XCTAssertEqual(first.children, [
-            .init(line: .heading("A", level: .h2), lineIndex: 1)
-        ])
-        let second = entries[1]
-        XCTAssertEqual(second.line, .heading("Top Level Two", level: .h1))
-        XCTAssertEqual(second.lineIndex, 2)
-        XCTAssertEqual(second.children, [
-            .init(line: .heading("B", level: .h2), lineIndex: 3)
-        ])
-    }
-    
-    func testMultipleNestedSections() {
-        let doc = Document(url: URL(string: "gemini://example.com")!, lines: [
-            .heading("Top Level", level: .h1),
-            .heading("A", level: .h2),
-            .heading("Third Level", level: .h3),
-            .heading("B", level: .h2),
-            .heading("Third Level 2", level: .h3),
-        ])
-        let entries = TableOfContents(document: doc).entries
-        XCTAssertEqual(entries.count, 1)
-        let topLevel = entries[0]
-        XCTAssertEqual(topLevel.line, .heading("Top Level", level: .h1))
-        XCTAssertEqual(topLevel.lineIndex, 0)
-        let children = topLevel.children
-        XCTAssertEqual(children.count, 2)
-        let first = children[0]
-        XCTAssertEqual(first.line, .heading("A", level: .h2))
-        XCTAssertEqual(first.lineIndex, 1)
-        XCTAssertEqual(first.children, [
-            .init(line: .heading("Third Level", level: .h3), lineIndex: 2)
-        ])
-        let second = children[1]
-        XCTAssertEqual(second.line, .heading("B", level: .h2))
-        XCTAssertEqual(second.lineIndex, 3)
-        XCTAssertEqual(second.children, [
-            .init(line: .heading("Third Level 2", level: .h3), lineIndex: 4)
-        ])
-    }
-    
-    func testNonH1TopLevelSections() {
-        let doc = Document(url: URL(string: "gemini://example.com")!, lines: [
-            .heading("A", level: .h2),
-            .heading("B", level: .h3),
-            .heading("C", level: .h1),
-        ])
-        let entries = TableOfContents(document: doc).entries
-        XCTAssertEqual(entries.count, 2)
-        let first = entries[0]
-        XCTAssertEqual(first.line, .heading("A", level: .h2))
-        XCTAssertEqual(first.lineIndex, 0)
-        XCTAssertEqual(first.children, [
-            .init(line: .heading("B", level: .h3), lineIndex: 1)
-        ])
-        XCTAssertEqual(entries[1], .init(line: .heading("C", level: .h1), lineIndex: 2))
-    }
-
-}

GeminiRenderer/GeminiHTMLRenderer.swift

@@ -1,75 +0,0 @@
-//
-//  GeminiHTMLRenderer.swift
-//  GeminiRenderer
-//
-//  Created by Shadowfacts on 12/16/20.
-//
-
-import Foundation
-import GeminiFormat
-import HTMLEntities
-
-public class GeminiHTMLRenderer {
-    
-    public var linkPrefix: ((URL) -> String?)?
-    
-    public init() {
-    }
-    
-    public func renderDocumentToHTML(_ doc: Document) -> String {
-        var str = ""
-        
-        var inPreformatting = false
-        var inList = false
-        
-        for (index, line) in doc.lines.enumerated() {
-            if inList && !line.isListItem {
-                str += "</ul>"
-            }
-            
-            switch line {
-            case let .text(text):
-                str += "<p>\(text.htmlEscape())</p>"
-            case let .link(url, text: maybeText):
-                let text = maybeText ?? url.absoluteString
-                let linkPrefix = self.linkPrefix?(url) ?? ""
-                str += "<p class=\"link\">\(linkPrefix)<a href=\"\(url.absoluteString)\">\(text.htmlEscape())</a></p>"
-            case .preformattedToggle(alt: _):
-                inPreformatting = !inPreformatting
-                if inPreformatting {
-                    str += "<pre>"
-                } else {
-                    str += "</pre>"
-                }
-            case let .preformattedText(text):
-                str += text.htmlEscape()
-                str += "\n"
-            case let .heading(text, level: level):
-                let tag = "h\(level.rawValue)"
-                str += "<\(tag) id=\"l\(index)\">\(text.htmlEscape())</\(tag)>"
-            case let .unorderedListItem(text):
-                if !inList {
-                    inList = true
-                    str += "<ul>"
-                }
-                str += "<li>\(text.htmlEscape())</li>"
-            case let .quote(text):
-                str += "<blockquote>\(text.htmlEscape())</blockquote>"
-            }
-        }
-        
-        return str
-    }
-    
-}
-
-fileprivate extension Document.Line {
-    var isListItem: Bool {
-        switch self {
-        case .unorderedListItem(_):
-            return true
-        default:
-            return false
-        }
-    }
-}