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KanbanGit/native/src-tauri/gen/apple/Sources/kanbangit-native/WorkspaceViewController.swift
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fix(KAN-71): correct Apple navigation gestures and scroll bounds
2026-09-29 07:22:45 +02:00

392 lines
19 KiB
Swift

import UIKit
import WebKit
@_cdecl("install_ios_workspace")
func installIOSWorkspace() {
DispatchQueue.main.async {
guard let root = UIApplication.shared.connectedScenes
.compactMap({ $0 as? UIWindowScene }).flatMap(\.windows)
.first(where: { $0.isKeyWindow })?.rootViewController
?? UIApplication.shared.windows.first?.rootViewController else { return }
guard !root.children.contains(where: { $0 is WorkspaceViewController }) else { return }
let controller = WorkspaceViewController()
root.view.subviews.forEach { $0.isHidden = true }
root.addChild(controller)
root.view.addSubview(controller.view)
controller.view.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
controller.view.topAnchor.constraint(equalTo: root.view.topAnchor),
controller.view.bottomAnchor.constraint(equalTo: root.view.bottomAnchor),
controller.view.leadingAnchor.constraint(equalTo: root.view.leadingAnchor),
controller.view.trailingAnchor.constraint(equalTo: root.view.trailingAnchor),
])
controller.didMove(toParent: root)
}
}
final class WorkspaceViewController: UIViewController, WKNavigationDelegate, WKUIDelegate, UITextFieldDelegate, UIGestureRecognizerDelegate {
private let defaults: UserDefaults
private let serverKey = "ios.activeServer"
private(set) var server: WorkspaceServer?
private(set) var workspace: WKWebView?
private var connection = WorkspaceConnection()
private var pendingNavigation: WKNavigation?
private var timeout: DispatchWorkItem?
private let loading = UIActivityIndicatorView(style: .large)
private let launcher = UIScrollView()
private let stack = UIStackView()
private let address = UITextField()
private let status = UILabel()
private let connectButton = UIButton(type: .system)
private let resumeButton = UIButton(type: .system)
private let toolbar = UIToolbar()
private var gestureStart = CGPoint.zero
private var gestureAllowed = false
private var gestureRevision = 0
private var appearance: UISegmentedControl!
init(defaults: UserDefaults = .standard) {
self.defaults = defaults
super.init(nibName: nil, bundle: nil)
}
required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") }
private func text(_ key: String) -> String {
NSLocalizedString(key, comment: "KanbanGit iOS workspace")
}
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .systemBackground
view.tintColor = UIColor(red: 0, green: 0.43, blue: 0.18, alpha: 1)
loading.accessibilityIdentifier = "workspaceLoading"
loading.accessibilityLabel = text("connecting")
loading.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(loading)
NSLayoutConstraint.activate([
loading.centerXAnchor.constraint(equalTo: view.centerXAnchor),
loading.centerYAnchor.constraint(equalTo: view.centerYAnchor),
])
configureLauncher()
configureToolbar()
if let data = defaults.data(forKey: serverKey) {
if let saved = try? JSONDecoder().decode(WorkspaceServer.self, from: data),
WorkspaceServer.normalize(saved.url.absoluteString) == saved.url {
server = saved
} else {
status.text = text("storageError")
}
}
address.text = server?.url.absoluteString ?? "https://kanbangit.de/"
if let server { open(server.url) } else { showSettings() }
}
private func label(_ key: String, style: UIFont.TextStyle = .body) -> UILabel {
let label = UILabel()
label.text = text(key)
label.font = .preferredFont(forTextStyle: style)
label.adjustsFontForContentSizeCategory = true
label.numberOfLines = 0
return label
}
private func configureLauncher() {
launcher.isHidden = true
launcher.accessibilityIdentifier = "serverSettings"
launcher.keyboardDismissMode = .interactive
launcher.bounces = false
view.addSubview(launcher)
launcher.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
launcher.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
launcher.bottomAnchor.constraint(equalTo: view.keyboardLayoutGuide.topAnchor),
launcher.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
launcher.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
])
stack.axis = .vertical
stack.spacing = 18
stack.translatesAutoresizingMaskIntoConstraints = false
launcher.addSubview(stack)
let width = stack.widthAnchor.constraint(equalTo: launcher.frameLayoutGuide.widthAnchor, constant: -40)
width.priority = .defaultHigh
NSLayoutConstraint.activate([
stack.topAnchor.constraint(equalTo: launcher.contentLayoutGuide.topAnchor, constant: 32),
stack.bottomAnchor.constraint(equalTo: launcher.contentLayoutGuide.bottomAnchor, constant: -32),
stack.centerXAnchor.constraint(equalTo: launcher.frameLayoutGuide.centerXAnchor),
stack.leadingAnchor.constraint(greaterThanOrEqualTo: launcher.contentLayoutGuide.leadingAnchor, constant: 20),
stack.trailingAnchor.constraint(lessThanOrEqualTo: launcher.contentLayoutGuide.trailingAnchor, constant: -20),
stack.widthAnchor.constraint(lessThanOrEqualToConstant: 480), width,
])
stack.addArrangedSubview(label("appName", style: .headline))
stack.addArrangedSubview(label("title", style: .largeTitle))
stack.addArrangedSubview(label("description"))
stack.addArrangedSubview(label("serverLabel", style: .headline))
address.borderStyle = .roundedRect
address.keyboardType = .URL
address.textContentType = .URL
address.autocorrectionType = .no
address.autocapitalizationType = .none
address.clearButtonMode = .whileEditing
address.returnKeyType = .go
address.delegate = self
address.accessibilityLabel = text("serverLabel")
address.accessibilityIdentifier = "serverAddress"
address.heightAnchor.constraint(greaterThanOrEqualToConstant: 48).isActive = true
stack.addArrangedSubview(address)
stack.addArrangedSubview(label("serverHelp", style: .footnote))
connectButton.configuration = .filled()
connectButton.setTitle(text("openWorkspace"), for: .normal)
connectButton.accessibilityIdentifier = "openWorkspace"
connectButton.addTarget(self, action: #selector(connect), for: .touchUpInside)
stack.addArrangedSubview(connectButton)
status.numberOfLines = 0
status.accessibilityIdentifier = "connectionStatus"
status.font = .preferredFont(forTextStyle: .body)
status.adjustsFontForContentSizeCategory = true
stack.addArrangedSubview(status)
resumeButton.setTitle(text("resume"), for: .normal)
resumeButton.accessibilityIdentifier = "resumeWorkspace"
resumeButton.addTarget(self, action: #selector(showWorkspace), for: .touchUpInside)
stack.addArrangedSubview(resumeButton)
stack.addArrangedSubview(label("appearance", style: .headline))
appearance = UISegmentedControl(items: [text("system"), text("light"), text("dark")])
appearance.selectedSegmentIndex = min(2, max(0, defaults.integer(forKey: "ios.appearance")))
appearance.accessibilityIdentifier = "appearance"
appearance.addTarget(self, action: #selector(changeAppearance), for: .valueChanged)
stack.addArrangedSubview(appearance)
[connectButton, resumeButton, appearance].forEach {
$0.heightAnchor.constraint(greaterThanOrEqualToConstant: 44).isActive = true
}
changeAppearance()
}
private func configureToolbar() {
toolbar.isHidden = true
toolbar.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(toolbar)
let settings = UIBarButtonItem(title: text("serverSettings"), style: .plain, target: self, action: #selector(showSettings))
settings.accessibilityIdentifier = "showServerSettings"
toolbar.items = [UIBarButtonItem(systemItem: .flexibleSpace), settings]
NSLayoutConstraint.activate([
toolbar.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
toolbar.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
toolbar.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
])
}
@objc private func changeAppearance() {
defaults.set(appearance.selectedSegmentIndex, forKey: "ios.appearance")
overrideUserInterfaceStyle = [.unspecified, .light, .dark][appearance.selectedSegmentIndex]
}
func textFieldShouldReturn(_ textField: UITextField) -> Bool { connect(); return true }
@objc private func connect() {
guard let url = WorkspaceServer.normalize(address.text ?? "") else {
status.text = text("invalidServer")
UIAccessibility.post(notification: .announcement, argument: status.text)
return
}
if let server, server.url != url {
let alert = UIAlertController(title: text("confirmSwitch"), message: text("switchWarning"), preferredStyle: .alert)
alert.addAction(UIAlertAction(title: text("cancel"), style: .cancel))
alert.addAction(UIAlertAction(title: text("confirmSwitch"), style: .destructive) { [weak self] _ in self?.open(url) })
present(alert, animated: true)
} else { open(url) }
}
func open(_ url: URL) {
if server?.url == url, connection.ready { showWorkspace(); return }
let selected = WorkspaceServer.selecting(url, current: server)
guard let data = try? JSONEncoder().encode(selected) else { status.text = text("storageError"); return }
defaults.set(data, forKey: serverKey)
timeout?.cancel()
workspace?.stopLoading()
workspace?.navigationDelegate = nil
workspace?.removeFromSuperview()
connection = WorkspaceConnection()
server = selected
let configuration = WKWebViewConfiguration()
configuration.websiteDataStore = WKWebsiteDataStore(forIdentifier: selected.profile)
let scriptURL = Bundle(for: WorkspaceViewController.self).url(forResource: "workspace-navigation", withExtension: "js")!
let script = try! String(contentsOf: scriptURL, encoding: .utf8)
configuration.userContentController.addUserScript(WKUserScript(source: script, injectionTime: .atDocumentStart, forMainFrameOnly: true))
// Remote content receives no native message handlers or Tauri bridge.
let webview = WKWebView(frame: .zero, configuration: configuration)
webview.navigationDelegate = self
webview.uiDelegate = self
// Native WebKit swipes can skip async pushState entries. One edge recognizer
// owns each gesture and traverses the same history that Inertia restores.
webview.allowsBackForwardNavigationGestures = false
webview.scrollView.bounces = false
for edge: UIRectEdge in [.left, .right] {
let gesture = UIScreenEdgePanGestureRecognizer(target: self, action: #selector(navigateGesture(_:)))
gesture.edges = edge
gesture.delegate = self
webview.addGestureRecognizer(gesture)
webview.scrollView.panGestureRecognizer.require(toFail: gesture)
}
webview.accessibilityIdentifier = "workspace"
webview.translatesAutoresizingMaskIntoConstraints = false
webview.isHidden = true
view.insertSubview(webview, belowSubview: launcher)
NSLayoutConstraint.activate([
webview.topAnchor.constraint(equalTo: toolbar.bottomAnchor),
webview.bottomAnchor.constraint(equalTo: view.keyboardLayoutGuide.topAnchor),
webview.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
webview.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
])
workspace = webview
view.endEditing(true)
address.text = url.absoluteString
launcher.isHidden = true
toolbar.isHidden = true
loading.startAnimating()
beginNavigation()
pendingNavigation = webview.load(URLRequest(url: selected.dashboardURL))
}
private func beginNavigation() {
timeout?.cancel()
let revision = connection.begin()
status.text = text("connecting")
connectButton.isEnabled = false
resumeButton.isHidden = !connection.ready
let work = DispatchWorkItem { [weak self] in self?.fail(revision) }
timeout = work
DispatchQueue.main.asyncAfter(deadline: .now() + 15, execute: work)
}
private func fail(_ revision: Int) {
guard connection.fail(revision) else { return }
timeout?.cancel()
status.text = text("connectionError")
connectButton.isEnabled = true
connectButton.setTitle(text("retry"), for: .normal)
showSettings()
}
@objc private func showSettings() {
loading.stopAnimating()
view.endEditing(true)
launcher.isHidden = false
toolbar.isHidden = true
workspace?.isHidden = true
resumeButton.isHidden = !connection.ready
}
@objc private func showWorkspace() {
guard connection.ready else { return }
loading.stopAnimating()
view.endEditing(true)
launcher.isHidden = true
toolbar.isHidden = false
workspace?.isHidden = false
}
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
guard gestureRecognizer is UIScreenEdgePanGestureRecognizer, let webview = workspace else { return false }
gestureStart = touch.location(in: webview)
gestureAllowed = false
gestureRevision += 1
let revision = gestureRevision
webview.evaluateJavaScript("window.__kanbanNavigation?.canSwipe(\(gestureStart.x), \(gestureStart.y)) === true") { [weak self, weak gestureRecognizer] result, _ in
guard let self, self.gestureRevision == revision, self.workspace === webview else { return }
self.gestureAllowed = result as? Bool == true
// Release the scroll view immediately when a board, field or overlay owns the touch.
if !self.gestureAllowed, gestureRecognizer?.state == .possible { gestureRecognizer?.state = .failed }
}
return true
}
func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
guard let edge = gestureRecognizer as? UIScreenEdgePanGestureRecognizer,
let webview = workspace, !webview.isHidden, gestureAllowed else { return false }
let velocity = edge.velocity(in: webview)
return abs(velocity.x) > abs(velocity.y)
&& (edge.edges == .left ? webview.canGoBack && velocity.x > 0 : webview.canGoForward && velocity.x < 0)
}
@objc private func navigateGesture(_ gesture: UIScreenEdgePanGestureRecognizer) {
guard gesture.state == .ended, let webview = workspace else { return }
let direction = gesture.edges == .left ? -1 : 1
let distance = gesture.translation(in: webview).x * CGFloat(-direction)
let velocity = gesture.velocity(in: webview).x * CGFloat(-direction)
guard distance > webview.bounds.width * 0.25 || (distance > 30 && velocity > 500) else { return }
navigateHistory(direction, from: gestureStart)
}
func navigateHistory(_ direction: Int, from point: CGPoint) {
guard let webview = workspace,
direction == -1 ? webview.canGoBack : webview.canGoForward else { return }
let script = "if (window.__kanbanNavigation?.canSwipe(\(point.x), \(point.y))) window.__kanbanNavigation.step(\(direction))"
webview.evaluateJavaScript(script, completionHandler: nil)
}
func webView(_ webView: WKWebView, decidePolicyFor action: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
guard webView === workspace, let url = action.request.url else { decisionHandler(.cancel); return }
guard server?.allows(url) == true else {
decisionHandler(.cancel)
if action.navigationType == .linkActivated,
action.sourceFrame.isMainFrame,
action.targetFrame == nil || action.targetFrame?.isMainFrame == true,
WorkspaceServer.allowsExternal(url) {
UIApplication.shared.open(url)
}
return
}
if action.targetFrame == nil {
decisionHandler(.cancel)
webView.load(action.request)
} else { decisionHandler(.allow) }
}
func webView(_ webView: WKWebView, decidePolicyFor response: WKNavigationResponse, decisionHandler: @escaping (WKNavigationResponsePolicy) -> Void) {
guard webView === workspace, let url = response.response.url,
server?.allows(url) == true else { decisionHandler(.cancel); return }
decisionHandler(.allow)
}
func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
guard webView === workspace else { return }
pendingNavigation = navigation
beginNavigation()
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
guard webView === workspace, navigation === pendingNavigation, connection.connecting,
let url = webView.url, server?.allows(url) == true else { return }
let firstLoad = !connection.ready
timeout?.cancel()
connection.finish()
connectButton.isEnabled = true
connectButton.setTitle(text("openWorkspace"), for: .normal)
status.text = text("connected")
resumeButton.isHidden = false
if firstLoad { showWorkspace() }
}
func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
navigationFailed(webView, navigation, error)
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
navigationFailed(webView, navigation, error)
}
private func navigationFailed(_ webView: WKWebView, _ navigation: WKNavigation?, _ error: Error) {
guard webView === workspace, navigation === pendingNavigation,
(error as NSError).code != NSURLErrorCancelled else { return }
fail(connection.revision)
}
func webViewWebContentProcessDidTerminate(_ webView: WKWebView) {
guard webView === workspace else { return }
connection = WorkspaceConnection()
status.text = text("processTerminated")
connectButton.isEnabled = true
showSettings()
}
}