Add preference to turn off link icons

Gemini-iOS/BrowserWebViewController.swift

@@ -12,6 +12,7 @@ import GeminiProtocol
 import GeminiFormat
 import GeminiRenderer
 import SafariServices
+import Combine
 
 class BrowserWebViewController: UIViewController {
 
@@ -32,6 +33,8 @@ class BrowserWebViewController: UIViewController {
     private var loaded = false
     private var loadedFallback = false
     
+    private var cancellables = Set<AnyCancellable>()
+    
     private var errorStack: UIStackView!
     private var errorMessageLabel: UILabel!
     private var activityIndicator: UIActivityIndicatorView!
@@ -51,25 +54,7 @@ class BrowserWebViewController: UIViewController {
     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>"
-
-        }
+        configureRenderer()
         
         view.backgroundColor = .systemBackground        
         
@@ -122,6 +107,14 @@ class BrowserWebViewController: UIViewController {
             activityIndicator.centerXAnchor.constraint(equalTo: view.centerXAnchor),
             activityIndicator.centerYAnchor.constraint(equalTo: view.centerYAnchor),
         ])
+        
+        Preferences.shared.$showLinkIcons
+            .sink { [weak self] newVal in
+                guard let self = self, let doc = self.document else { return }
+                self.configureRenderer(showLinkIcons: newVal)
+                self.renderDocument(doc)
+            }
+            .store(in: &cancellables)
     }
     
     override func viewWillAppear(_ animated: Bool) {
@@ -130,6 +123,31 @@ class BrowserWebViewController: UIViewController {
         loadDocument()
     }
     
+    private func configureRenderer(showLinkIcons: Bool = Preferences.shared.showLinkIcons) {
+        if showLinkIcons {
+            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>"
+            }
+        } else {
+            renderer.linkPrefix = nil
+        }
+    }
+    
     func reload() {
         loaded = false
         loadedFallback = false

Gemini-iOS/Preferences.swift

@@ -35,6 +35,9 @@ class Preferences: Codable, ObservableObject {
         let container = try decoder.container(keyedBy: CodingKeys.self)
         
         theme = try container.decode(UIUserInterfaceStyle.self, forKey: .theme)
+        if let stored = try container.decodeIfPresent(Bool.self, forKey: .showLinkIcons) {
+            showLinkIcons = stored
+        }
         
         useInAppSafari = try container.decode(Bool.self, forKey: .useInAppSafari)
         useReaderMode = try container.decode(Bool.self, forKey: .useReaderMode)
@@ -44,18 +47,21 @@ class Preferences: Codable, ObservableObject {
         var container = encoder.container(keyedBy: CodingKeys.self)
         
         try container.encode(theme, forKey: .theme)
+        try container.encode(showLinkIcons, forKey: .showLinkIcons)
         
         try container.encode(useInAppSafari, forKey: .useInAppSafari)
         try container.encode(useReaderMode, forKey: .useReaderMode)
     }
     
     @Published var theme = UIUserInterfaceStyle.unspecified
+    @Published var showLinkIcons = true
     
     @Published var useInAppSafari = false
     @Published var useReaderMode = false
     
     enum CodingKeys: String, CodingKey {
         case theme
+        case showLinkIcons
         
         case useInAppSafari
         case useReaderMode

Gemini-iOS/PreferencesView.swift

@@ -45,6 +45,8 @@ struct PreferencesView: View {
                 Text("Always Light").tag(UIUserInterfaceStyle.light)
                 Text("Always Dark").tag(UIUserInterfaceStyle.dark)
             }
+            
+            Toggle("Show Link Icons", isOn: $preferences.showLinkIcons)
         }
     }