[iOS] Display new Default Browser prompt in the new onboarding regions

This change also includes a guard against if the user is likely already set Brave as the default

ios/brave-ios/Sources/Brave/Frontend/Browser/BrowserViewController/BVC+Callout.swift

@@ -47,7 +47,7 @@ extension BrowserViewController {
     case .bottomBar:
       presentBottomBarCallout(skipSafeGuards: skipSafeGuards)
     case .defaultBrowser:
-      presentDefaultBrowserScreenCallout()
+      presentDefaultBrowserScreenCallout(skipSafeGuards: skipSafeGuards)
     case .rewards:
       presentBraveRewardsScreenCallout(skipSafeGuards: skipSafeGuards)
     case .vpnPromotion:
@@ -131,37 +131,59 @@ extension BrowserViewController {
     present(popup, animated: false)
   }
 
-  private func presentDefaultBrowserScreenCallout() {
-    let onboardingController = WelcomeViewController(
-      state: WelcomeViewCalloutState.defaultBrowserCallout(
-        info: WelcomeViewCalloutState.WelcomeViewDefaultBrowserDetails(
-          title: Strings.Callout.defaultBrowserCalloutTitle,
-          details: Strings.Callout.defaultBrowserCalloutDescription,
-          primaryButtonTitle: Strings.Callout.defaultBrowserCalloutPrimaryButtonTitle,
-          secondaryButtonTitle: Strings.Callout.defaultBrowserCalloutSecondaryButtonTitle,
-          primaryButtonAction: { [weak self] in
-            guard let settingsUrl = URL(string: UIApplication.openSettingsURLString) else {
-              return
+  private func presentDefaultBrowserScreenCallout(skipSafeGuards: Bool = false) {
+    if !Locale.current.isNewOnboardingRegion {
+      let onboardingController = WelcomeViewController(
+        state: WelcomeViewCalloutState.defaultBrowserCallout(
+          info: WelcomeViewCalloutState.WelcomeViewDefaultBrowserDetails(
+            title: Strings.Callout.defaultBrowserCalloutTitle,
+            details: Strings.Callout.defaultBrowserCalloutDescription,
+            primaryButtonTitle: Strings.Callout.defaultBrowserCalloutPrimaryButtonTitle,
+            secondaryButtonTitle: Strings.Callout.defaultBrowserCalloutSecondaryButtonTitle,
+            primaryButtonAction: { [weak self] in
+              guard let settingsUrl = URL(string: UIApplication.openSettingsURLString) else {
+                return
+              }
+
+              Preferences.General.defaultBrowserCalloutDismissed.value = true
+              self?.isOnboardingOrFullScreenCalloutPresented = true
+
+              UIApplication.shared.open(settingsUrl)
+              self?.dismiss(animated: false)
+            },
+            secondaryButtonAction: { [weak self] in
+              self?.isOnboardingOrFullScreenCalloutPresented = true
+
+              self?.dismiss(animated: false)
             }
+          )
+        ),
+        p3aUtilities: braveCore.p3aUtils,
+        attributionManager: attributionManager
+      )
+      present(onboardingController, animated: true)
+      return
+    }
 
-            Preferences.General.defaultBrowserCalloutDismissed.value = true
-            self?.isOnboardingOrFullScreenCalloutPresented = true
+    if !skipSafeGuards {
+      let isLikelyDefault = DefaultBrowserHelper.isBraveLikelyDefaultBrowser()
 
-            UIApplication.shared.open(settingsUrl)
-            self?.dismiss(animated: false)
-          },
-          secondaryButtonAction: { [weak self] in
-            self?.isOnboardingOrFullScreenCalloutPresented = true
+      guard !isLikelyDefault else {
+        return
+      }
+    }
 
-            self?.dismiss(animated: false)
-          }
-        )
-      ),
-      p3aUtilities: braveCore.p3aUtils,
-      attributionManager: attributionManager
-    )
+    let defaultBrowserCallout = UIHostingController(
+      rootView: FocusSystemSettingsView(
+        screenType: .callout,
+        shouldDismiss: Binding.constant(false)
+      )
+    ).then {
+      $0.isModalInPresentation = true
+      $0.modalPresentationStyle = .overFullScreen
+    }
 
-    present(onboardingController, animated: true)
+    present(defaultBrowserCallout, animated: true)
   }
 
   private func presentBraveRewardsScreenCallout(skipSafeGuards: Bool = false) {

ios/brave-ios/Sources/Onboarding/ProductNotifications/FullScreenCalloutManager.swift

@@ -28,7 +28,7 @@ public enum FullScreenCalloutType: CaseIterable {
     case .vpnUpdateBilling: return 0
     case .bottomBar: return 0
     case .vpnPromotion: return 4
-    case .defaultBrowser: return 10
+    case .defaultBrowser: return Locale.current.isNewOnboardingRegion ? 7 : 10
     case .rewards: return 8
     case .vpnLinkReceipt: return 0
     }

ios/brave-ios/Sources/Onboarding/WelcomeFocus/FocusP3AScreenView.swift

@@ -53,7 +53,7 @@ struct FocusP3AScreenView: View {
       .background(Color(braveSystemName: .pageBackground))
       .background {
         NavigationLink("", isActive: $isSystemSettingsViewPresented) {
-          FocusSystemSettingsView(shouldDismiss: $shouldDismiss)
+          FocusSystemSettingsView(screenType: .onboarding, shouldDismiss: $shouldDismiss)
         }
       }
       .toolbar(.hidden, for: .navigationBar)
@@ -66,7 +66,7 @@ struct FocusP3AScreenView: View {
       .background(Color(braveSystemName: .pageBackground))
       .background {
         NavigationLink("", isActive: $isSystemSettingsViewPresented) {
-          FocusSystemSettingsView(shouldDismiss: $shouldDismiss)
+          FocusSystemSettingsView(screenType: .onboarding, shouldDismiss: $shouldDismiss)
         }
       }
       .toolbar(.hidden, for: .navigationBar)

ios/brave-ios/Sources/Onboarding/WelcomeFocus/FocusSystemSettingsView.swift

@@ -8,20 +8,36 @@ import Lottie
 import Preferences
 import SwiftUI
 
-struct FocusSystemSettingsView: View {
+public struct FocusSystemSettingsView: View {
+
+  public enum DefaultBrowserScreenType {
+    case onboarding, callout
+  }
+
   @Environment(\.colorScheme) private var colorScheme
+  @Environment(\.dismiss) var dismiss
   @Environment(\.verticalSizeClass) private var verticalSizeClass: UserInterfaceSizeClass?
   @Environment(\.horizontalSizeClass) private var horizontalSizeClass: UserInterfaceSizeClass?
 
   @Binding var shouldDismiss: Bool
 
+  var screenType: DefaultBrowserScreenType
+
   private var shouldUseExtendedDesign: Bool {
     return horizontalSizeClass == .regular && verticalSizeClass == .regular
   }
 
   private let dynamicTypeRange = (...DynamicTypeSize.xLarge)
 
-  var body: some View {
+  public init(
+    screenType: DefaultBrowserScreenType,
+    shouldDismiss: Binding<Bool>
+  ) {
+    self.screenType = screenType
+    self._shouldDismiss = shouldDismiss
+  }
+
+  public var body: some View {
     if shouldUseExtendedDesign {
       VStack(spacing: 40) {
         VStack {
@@ -33,15 +49,20 @@ struct FocusSystemSettingsView: View {
         .shadow(color: .black.opacity(0.1), radius: 18, x: 0, y: 8)
         .shadow(color: .black.opacity(0.05), radius: 0, x: 0, y: 1)
 
-        FocusStepsPagingIndicator(totalPages: 4, activeIndex: .constant(3))
+        if screenType == .onboarding {
+          FocusStepsPagingIndicator(totalPages: 4, activeIndex: .constant(3))
+        }
       }
       .frame(maxWidth: .infinity, maxHeight: .infinity)
       .background(Color(braveSystemName: .pageBackground))
       .toolbar(.hidden, for: .navigationBar)
     } else {
       VStack(spacing: 16) {
         settingsSystemContentView
-        FocusStepsPagingIndicator(totalPages: 4, activeIndex: .constant(3))
+
+        if screenType == .onboarding {
+          FocusStepsPagingIndicator(totalPages: 4, activeIndex: .constant(3))
+        }
       }
       .padding(.bottom, 20)
       .background(Color(braveSystemName: .pageBackground))
@@ -97,8 +118,7 @@ struct FocusSystemSettingsView: View {
               UIApplication.shared.open(settingsUrl)
             }
 
-            Preferences.FocusOnboarding.urlBarIndicatorShowBeShown.value = true
-            shouldDismiss = true
+            completeDefaultBrowserInteraction()
           },
           label: {
             Text(Strings.FocusOnboarding.systemSettingsButtonTitle)
@@ -119,12 +139,13 @@ struct FocusSystemSettingsView: View {
 
         Button(
           action: {
-            Preferences.FocusOnboarding.urlBarIndicatorShowBeShown.value = true
-            shouldDismiss = true
+            completeDefaultBrowserInteraction()
           },
           label: {
             Text(
-              "\(Strings.FocusOnboarding.startBrowseActionButtonTitle) \(Image(systemName: "arrow.right"))"
+              screenType == .onboarding
+                ? "\(Strings.FocusOnboarding.startBrowseActionButtonTitle) \(Image(systemName: "arrow.right"))"
+                : "\(Strings.FocusOnboarding.notNowActionButtonTitle)"
             )
             .font(.subheadline.weight(.semibold))
             .foregroundColor(Color(braveSystemName: .textInteractive))
@@ -143,14 +164,25 @@ struct FocusSystemSettingsView: View {
     .padding(.vertical, shouldUseExtendedDesign ? 48 : 24)
     .padding(.horizontal, shouldUseExtendedDesign ? 75 : 20)
   }
+
+  private func completeDefaultBrowserInteraction() {
+    if screenType == .onboarding {
+      Preferences.FocusOnboarding.urlBarIndicatorShowBeShown.value = true
+      shouldDismiss = true
+    } else {
+      dismiss()
+    }
+  }
 }
 
 #if DEBUG
 struct FocusSystemSettingsView_Previews: PreviewProvider {
   static var previews: some View {
     @State var shouldDismiss: Bool = false
 
-    FocusSystemSettingsView(shouldDismiss: $shouldDismiss)
+    FocusSystemSettingsView(screenType: .onboarding, shouldDismiss: $shouldDismiss)
+
+    FocusSystemSettingsView(screenType: .callout, shouldDismiss: $shouldDismiss)
   }
 }
 #endif

ios/brave-ios/Sources/Onboarding/WelcomeFocus/Resources/FocusOnboardingStrings.swift

@@ -120,6 +120,14 @@ extension Strings {
       comment: "The title of the button that finishes the onboarding without setting default"
     )
 
+    public static let notNowActionButtonTitle = NSLocalizedString(
+      "focusOnboarding.notNowActionButtonTitle",
+      tableName: "FocusOnboarding",
+      bundle: .module,
+      value: "Not Now",
+      comment: "The title of the button that closes the default browser full screen callout"
+    )
+
     public static let urlBarIndicatorTitle = NSLocalizedString(
       "focusOnboarding.urlBarIndicatorTitle",
       tableName: "FocusOnboarding",