Add inline profile camera capture

mobile/ios/Runner/JumpToLatestGlassButton.swift

@@ -169,10 +169,18 @@ final class NavigationGlassButtonFactory: NSObject, FlutterPlatformViewFactory {
 }
 
 final class NavigationGlassButtonPlatformView: NSObject, FlutterPlatformView {
+  private static let shutterIconRatio: CGFloat = 80.0 / 115.0
+  private static let shutterInsetRatio: CGFloat = 20.0 / 115.0
   private let containerView: UIView
   private let channel: FlutterMethodChannel
   private let button = NavigationGlassButton(type: .system)
+  private let activityIndicator = UIActivityIndicatorView(style: .medium)
   private var buttonLabel: String?
+  private var buttonIconName = "chevron.backward"
+  private var contentIcon = "back"
+  private var buttonImage: UIImage?
+  private var isBusy = false
+  private var controlSize: CGFloat = 40
 
   init(
     frame: CGRect,
@@ -196,12 +204,11 @@ final class NavigationGlassButtonPlatformView: NSObject, FlutterPlatformView {
       (arguments?["hitTargetWidth"] as? NSNumber)?.doubleValue ?? 48
     let hitTargetHeight =
       (arguments?["hitTargetHeight"] as? NSNumber)?.doubleValue ?? 48
-    let label = arguments?["label"] as? String
-    buttonLabel = label
-    let icon = arguments?["icon"] as? String
-    let symbolName = icon == "close" ? "xmark" : "chevron.backward"
     let controlWidth =
       (arguments?["controlWidth"] as? NSNumber)?.doubleValue ?? 40
+    controlSize =
+      (arguments?["controlSize"] as? NSNumber)?.doubleValue ?? 40
+    let fillWidth = arguments?["fillWidth"] as? Bool ?? false
 
     var configuration: UIButton.Configuration
     if #available(iOS 26.0, *) {
@@ -211,33 +218,15 @@ final class NavigationGlassButtonPlatformView: NSObject, FlutterPlatformView {
       configuration.baseBackgroundColor = UIColor.secondarySystemBackground
     }
     configuration.cornerStyle = .capsule
-    if let label {
-      configuration.title = label
-      configuration.titleLineBreakMode = .byClipping
-      configuration.titleTextAttributesTransformer = UIConfigurationTextAttributesTransformer {
-        incoming in
-        var outgoing = incoming
-        let preferred = UIFont.preferredFont(forTextStyle: .subheadline)
-        outgoing.font = UIFont.systemFont(ofSize: preferred.pointSize, weight: .semibold)
-        return outgoing
-      }
-    } else {
-      configuration.image = UIImage(
-        systemName: symbolName,
-        withConfiguration: UIImage.SymbolConfiguration(
-          pointSize: 17,
-          weight: .semibold
-        )
-      )
-    }
     button.configuration = configuration
+    applyContent(from: arguments)
     button.titleLabel?.numberOfLines = 1
     button.titleLabel?.lineBreakMode = .byClipping
     button.hitTargetInsets = UIEdgeInsets(
-      top: max(0, (hitTargetHeight - 40) / 2),
-      left: max(0, buttonCenterX - 20),
-      bottom: max(0, (hitTargetHeight - 40) / 2),
-      right: max(0, hitTargetWidth - buttonCenterX - 20)
+      top: max(0, (hitTargetHeight - controlSize) / 2),
+      left: max(0, buttonCenterX - controlWidth / 2),
+      bottom: max(0, (hitTargetHeight - controlSize) / 2),
+      right: max(0, hitTargetWidth - buttonCenterX - controlWidth / 2)
     )
     button.accessibilityLabel = arguments?["accessibilityLabel"] as? String ?? "Back"
     button.translatesAutoresizingMaskIntoConstraints = false
@@ -248,8 +237,24 @@ final class NavigationGlassButtonPlatformView: NSObject, FlutterPlatformView {
       for: .touchUpInside
     )
 
+    activityIndicator.translatesAutoresizingMaskIntoConstraints = false
+    activityIndicator.hidesWhenStopped = true
+    activityIndicator.isUserInteractionEnabled = false
+    button.addSubview(activityIndicator)
+    NSLayoutConstraint.activate([
+      activityIndicator.centerXAnchor.constraint(equalTo: button.centerXAnchor),
+      activityIndicator.centerYAnchor.constraint(equalTo: button.centerYAnchor),
+      activityIndicator.widthAnchor.constraint(equalToConstant: 24),
+      activityIndicator.heightAnchor.constraint(equalToConstant: 24),
+    ])
+
     applyAppearance(from: args)
     channel.setMethodCallHandler { [weak self] call, result in
+      if call.method == "setContent" {
+        self?.setContent(from: call.arguments)
+        result(nil)
+        return
+      }
       guard call.method == "setAppearance" else {
         result(FlutterMethodNotImplemented)
         return
@@ -260,14 +265,19 @@ final class NavigationGlassButtonPlatformView: NSObject, FlutterPlatformView {
 
     containerView.addSubview(button)
     NSLayoutConstraint.activate([
+      button.centerYAnchor.constraint(equalTo: containerView.centerYAnchor),
+      button.heightAnchor.constraint(equalToConstant: controlSize),
+    ])
+    if fillWidth {
+      button.centerXAnchor.constraint(equalTo: containerView.centerXAnchor).isActive = true
+      button.widthAnchor.constraint(equalTo: containerView.widthAnchor).isActive = true
+    } else {
       button.centerXAnchor.constraint(
         equalTo: containerView.leadingAnchor,
         constant: buttonCenterX
-      ),
-      button.centerYAnchor.constraint(equalTo: containerView.centerYAnchor),
-      button.widthAnchor.constraint(equalToConstant: controlWidth),
-      button.heightAnchor.constraint(equalToConstant: 40),
-    ])
+      ).isActive = true
+      button.widthAnchor.constraint(equalToConstant: controlWidth).isActive = true
+    }
   }
 
   func view() -> UIView {
@@ -331,24 +341,130 @@ final class NavigationGlassButtonPlatformView: NSObject, FlutterPlatformView {
     let foregroundColor = colorValue.map(Self.color(from:))
     let enabled = arguments?["enabled"] as? Bool ?? true
     let busy = arguments?["busy"] as? Bool ?? false
+    let selected = arguments?["selected"] as? Bool ?? false
 
     containerView.overrideUserInterfaceStyle = interfaceStyle
     button.overrideUserInterfaceStyle = interfaceStyle
     button.isEnabled = enabled
-    button.configuration?.showsActivityIndicator = busy
-    button.configuration?.title = busy ? nil : buttonLabel
+    button.isSelected = selected
+    isBusy = busy
+    if selected {
+      button.accessibilityTraits.insert(.selected)
+    } else {
+      button.accessibilityTraits.remove(.selected)
+    }
+    button.configuration?.showsActivityIndicator = false
     if let foregroundColor {
+      // Glass uses the view tint for its selected treatment. Keep it aligned
+      // with the Buzz theme instead of falling back to the system blue tint.
+      button.tintColor = foregroundColor
       button.configuration?.baseForegroundColor = foregroundColor
+      activityIndicator.color = foregroundColor
     }
     if #unavailable(iOS 26.0) {
       button.configuration?.baseBackgroundColor = Self.fallbackBackgroundColor(
         foregroundColor: foregroundColor,
         interfaceStyle: interfaceStyle
       )
     }
+    updateDisplayedContent()
+    button.setNeedsUpdateConfiguration()
+  }
+
+  private func applyContent(from value: Any?) {
+    let arguments = value as? [String: Any]
+    let icon = arguments?["icon"] as? String
+    contentIcon = icon ?? "back"
+    buttonLabel = arguments?["label"] as? String
+    if let accessibilityLabel = arguments?["accessibilityLabel"] as? String {
+      button.accessibilityLabel = accessibilityLabel
+    }
+    switch icon {
+    case "close": buttonIconName = "xmark"
+    case "camera": buttonIconName = "camera"
+    case "photoLibrary": buttonIconName = "photo.on.rectangle.angled"
+    case "palette": buttonIconName = "paintpalette"
+    case "emoji": buttonIconName = "face.smiling"
+    case "person": buttonIconName = "person"
+    case "frame": buttonIconName = "rectangle.stack"
+    case "rotateCamera": buttonIconName = "arrow.triangle.2.circlepath.camera"
+    case "shutter": buttonIconName = "circle.fill"
+    default: buttonIconName = "chevron.backward"
+    }
+    if buttonLabel != nil {
+      buttonImage = nil
+      button.configuration?.contentInsets = NSDirectionalEdgeInsets(
+        top: 8,
+        leading: 8,
+        bottom: 8,
+        trailing: 8
+      )
+      button.configuration?.titleLineBreakMode = .byClipping
+      button.configuration?.titleTextAttributesTransformer =
+        UIConfigurationTextAttributesTransformer { incoming in
+          var outgoing = incoming
+          let preferred = UIFont.preferredFont(forTextStyle: .subheadline)
+          outgoing.font = UIFont.systemFont(
+            ofSize: preferred.pointSize,
+            weight: .semibold
+          )
+          return outgoing
+        }
+    } else {
+      button.configuration?.titleTextAttributesTransformer = nil
+      let iconInset: CGFloat = icon == "shutter"
+        ? controlSize * Self.shutterInsetRatio
+        : 8
+      button.configuration?.contentInsets = NSDirectionalEdgeInsets(
+        top: iconInset,
+        leading: iconInset,
+        bottom: iconInset,
+        trailing: iconInset
+      )
+      let pointSize: CGFloat = icon == "shutter"
+        ? controlSize * Self.shutterIconRatio
+        : 17
+      buttonImage = UIImage(
+        systemName: buttonIconName,
+        withConfiguration: UIImage.SymbolConfiguration(
+          pointSize: pointSize,
+          weight: .semibold
+        )
+      )
+    }
+    updateDisplayedContent()
     button.setNeedsUpdateConfiguration()
   }
 
+  private func setContent(from value: Any?) {
+    let arguments = value as? [String: Any]
+    let nextIcon = arguments?["icon"] as? String ?? "back"
+    let nextLabel = arguments?["label"] as? String
+    guard nextIcon != contentIcon || nextLabel != buttonLabel else {
+      applyContent(from: value)
+      return
+    }
+    let duration = UIAccessibility.isReduceMotionEnabled ? 0 : 0.12
+    UIView.transition(
+      with: button,
+      duration: duration,
+      options: [.transitionCrossDissolve, .beginFromCurrentState, .allowAnimatedContent],
+      animations: { [weak self] in self?.applyContent(from: value) }
+    )
+  }
+
+  private func updateDisplayedContent() {
+    if isBusy {
+      button.configuration?.title = nil
+      button.configuration?.image = nil
+      activityIndicator.startAnimating()
+    } else {
+      button.configuration?.title = buttonLabel
+      button.configuration?.image = buttonLabel == nil ? buttonImage : nil
+      activityIndicator.stopAnimating()
+    }
+  }
+
   private static func color(from value: UInt32) -> UIColor {
     let alpha = CGFloat((value >> 24) & 0xFF) / 255
     let red = CGFloat((value >> 16) & 0xFF) / 255