Open legal links with in app sheets instead of external browser

ElementX/Sources/Screens/Settings/LegalInformationScreen/View/LegalInformationScreen.swift

@@ -8,28 +8,85 @@
 
 import Compound
 import SwiftUI
+import WebKit
 
 struct LegalInformationScreen: View {
     let context: LegalInformationScreenViewModel.Context
     @Environment(\.openURL) private var openURL
     
+    /*
+     Letro: open legal info in a sheet instead of external browser
+     */
+    @State private var browserURL: BrowserURL?
+
     var body: some View {
         Form {
             Section {
                 ListRow(label: .plain(title: L10n.commonCopyright),
-                        kind: .button { openURL(context.viewState.copyrightURL) })
+                        kind: .button { browserURL = BrowserURL(context.viewState.copyrightURL) })
                 ListRow(label: .plain(title: L10n.commonAcceptableUsePolicy),
-                        kind: .button { openURL(context.viewState.acceptableUseURL) })
+                        kind: .button { browserURL = BrowserURL(context.viewState.acceptableUseURL) })
                 ListRow(label: .plain(title: L10n.commonPrivacyPolicy),
-                        kind: .button { openURL(context.viewState.privacyURL) })
+                        kind: .button { browserURL = BrowserURL(context.viewState.privacyURL) })
             }
         }
         .compoundList()
         .navigationTitle(L10n.commonAbout)
         .navigationBarTitleDisplayMode(.inline)
+        .sheet(item: $browserURL) { browserURL in
+            ElementNavigationStack {
+                LegalInformationWebView(url: browserURL.url)
+                    .ignoresSafeArea(edges: .bottom)
+                    .toolbar {
+                        ToolbarItem(placement: .confirmationAction) {
+                            Button(L10n.actionDone) {
+                                self.browserURL = nil
+                            }
+                        }
+                    }
+            }
+        }
     }
 }
 
+/*
+ Letro: open legal info in a sheet instead of external browser
+ */
+
+private struct BrowserURL: Identifiable {
+    let url: URL
+    var id: URL { url }
+    
+    init(_ url: URL) {
+        self.url = url
+    }
+}
+
+private struct LegalInformationWebView: UIViewControllerRepresentable {
+    let url: URL
+    
+    func makeUIViewController(context: Context) -> UIViewController {
+        let viewController = UIViewController()
+        let webView = WKWebView()
+        webView.allowsBackForwardNavigationGestures = true
+        webView.translatesAutoresizingMaskIntoConstraints = false
+        
+        viewController.view.addSubview(webView)
+        NSLayoutConstraint.activate([
+            webView.topAnchor.constraint(equalTo: viewController.view.topAnchor),
+            webView.leadingAnchor.constraint(equalTo: viewController.view.leadingAnchor),
+            webView.trailingAnchor.constraint(equalTo: viewController.view.trailingAnchor),
+            webView.bottomAnchor.constraint(equalTo: viewController.view.bottomAnchor)
+        ])
+        
+        webView.load(URLRequest(url: url))
+        
+        return viewController
+    }
+    
+    func updateUIViewController(_ uiViewController: UIViewController, context: Context) { }
+}
+
 // MARK: - Previews
 
 struct LegalInformationScreen_Previews: PreviewProvider, TestablePreview {