Move configuration to separate file

Sources/SafariView/Configuration.swift

@@ -0,0 +1,73 @@
+// SafariView
+// Configuration.swift
+//
+// MIT License
+//
+// Copyright (c) 2021 Varun Santhanam
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the  Software), to deal
+//
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED  AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+import UIKit
+
+public extension SafariView {
+
+    /// The configuration for a ``SafariView/SafariView``
+    ///
+    /// To change the configuration for the current scope, see the ``SwiftUI/View/safariConfiguration(_:)`` view modifier.
+    struct Configuration {
+
+        /// Create a new safari view configuration
+        /// - Parameters:
+        ///   - entersReaderIfAvailable: Whether or not the view should enter reader mode automatically, if available.
+        ///   - barCollapsingEnabled: Whether or not the view should support bar collapsing.
+        ///   - activityButton: A custom activity button.
+        ///   - eventAttribution: Event attribution data for Private Click Measurement.
+        public init(
+            entersReaderIfAvailable: Bool = false,
+            barCollapsingEnabled: Bool = false,
+            activityButton: ActivityButton? = nil,
+            eventAttribution: UIEventAttribution? = nil
+        ) {
+            self.entersReaderIfAvailable = entersReaderIfAvailable
+            self.barCollapsingEnabled = barCollapsingEnabled
+            self.activityButton = activityButton
+            self.eventAttribution = eventAttribution
+        }
+
+        /// A value that specifies whether Safari should enter Reader mode, if it is available.
+        ///
+        /// Set the value to `true` if Reader mode should be entered automatically when it is available for the webpage; otherwise, false. The default value is `false`.
+        public var entersReaderIfAvailable: Bool
+
+        /// A value that specifies whether Safari should allow bar collapsing
+        ///
+        /// Set the value `true` if bar collapsing should be enabled when the user scrolls; otherwise, false. The default value is `false`.
+        public var barCollapsingEnabled: Bool
+
+        /// The activity button to use in the Safari View.
+        public var activityButton: ActivityButton?
+
+        /// An object you use to send tap event attribution data to the browser for Private Click Measurement.
+        ///
+        /// For more information about preparing event attribution data, see [`UIEventAttribution`](https://developer.apple.com/documentation/uikit/uieventattribution).
+        public var eventAttribution: UIEventAttribution?
+
+    }
+
+}

Sources/SafariView/SafariView.swift

@@ -60,55 +60,15 @@ public struct SafariView: View {
     /// A convenience typealias for [`SFSafariViewController.ActivityButton`](https://developer.apple.com/documentation/safariservices/sfsafariviewcontroller/activitybutton)
     ///
     /// To change the configuration for the current scope, see the ``SwiftUI/View/safariConfiguration(_:)`` view modifier.
+    @available(iOS 15.0, *)
     public typealias ActivityButton = SFSafariViewController.ActivityButton
 
     /// A convenience typealias for [`SFSafariViewController.PrewarmingToken`](https://developer.apple.com/documentation/safariservices/sfsafariviewcontroller/prewarmingtoken)
     ///
     /// You can generate prewarming tokens for invalidation using the ``prewarmConnections(to:)`` static method.
+    @available(iOS 15.0, *)
     public typealias PrewarmingToken = SFSafariViewController.PrewarmingToken
 
-    /// The configuration for a ``SafariView/SafariView``
-    ///
-    /// To change the configuration for the current scope, see the ``SwiftUI/View/safariConfiguration(_:)`` view modifier.
-    public struct Configuration {
-
-        /// Create a configuration for a ``SafariView/SafariView``
-        /// - Parameters:
-        ///   - entersReaderIfAvailable: Whether or not Safari should enter reader mode, if it is available.
-        ///   - barCollapsingEnabled: Whether or not Safari should support bar collapsing.
-        ///   - eventAttribution: Event attribution for Private Click Measurement.
-        ///   - activityButton: A custom activity button.
-        public init(
-            entersReaderIfAvailable: Bool = false,
-            barCollapsingEnabled: Bool = false,
-            eventAttribution: UIEventAttribution? = nil,
-            activityButton: ActivityButton? = nil
-        ) {
-            self.entersReaderIfAvailable = entersReaderIfAvailable
-            self.barCollapsingEnabled = barCollapsingEnabled
-            self.eventAttribution = eventAttribution
-            self.activityButton = activityButton
-        }
-
-        /// A value that specifies whether Safari should enter Reader mode, if it is available.
-        ///
-        /// Set the value to `true` if Reader mode should be entered automatically when it is available for the webpage; otherwise, false. The default value is `false`.
-        public var entersReaderIfAvailable: Bool
-
-        /// A value that specifies whether Safari should allow bar collapsing
-        ///
-        /// Set the value `true` if bar collapsing should be enabled when the user scrolls; otherwise, false. The default value is `false`.
-        public var barCollapsingEnabled: Bool
-
-        /// An object you use to send tap event attribution data to the browser for Private Click Measurement.
-        ///
-        /// For more information about preparing event attribution data, see [`UIEventAttribution`](https://developer.apple.com/documentation/uikit/uieventattribution).
-        public var eventAttribution: UIEventAttribution?
-
-        /// The activity button to use in the Safari View.
-        public var activityButton: ActivityButton?
-    }
-
     /// Prewarm the connection to a list of provided URLs
     ///
     /// You can use this returned value of this method  to invalidate the prewarmed cache by invoking the `invaldate()` method on the token.
@@ -121,6 +81,7 @@ public struct SafariView: View {
     ///
     /// - Parameter URLs: The URLs to prewarm
     /// - Returns: A prewarming token for the provided URLs.
+    @available(iOS 15.0, *)
     @discardableResult
     public static func prewarmConnections(to URLs: [URL]) -> PrewarmingToken {
         SFSafariViewController.prewarmConnections(to: URLs)
@@ -683,8 +644,12 @@ private extension SafariView.Configuration {
         let configuration = SFSafariViewController.Configuration()
         configuration.entersReaderIfAvailable = entersReaderIfAvailable
         configuration.barCollapsingEnabled = barCollapsingEnabled
-        configuration.eventAttribution = eventAttribution
-        configuration.activityButton = activityButton
+        if #available(iOS 15.2, *) {
+            configuration.eventAttribution = eventAttribution
+        }
+        if #available(iOS 15.0, *) {
+            configuration.activityButton = activityButton
+        }
         return configuration
     }