[Enhancement]Allow changing the ViewFactory used by Picture-in-Picture

CHANGELOG.md

@@ -6,6 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### ✅ Added
 - When the user is missing a permission, the SDK will prompt them to accept any missing permission. [#915](https://github.com/GetStream/stream-video-swift/pull/915)
+- You can now set the `ViewFactory` instance to be used from Picture-in-Picture. [#934](https://github.com/GetStream/stream-video-swift/pull/934) 
 
 ### 🔄 Changed
 - Improved the LastParticipantLeavePolicy to be more robust. [#925](https://github.com/GetStream/stream-video-swift/pull/925)

Sources/StreamVideoSwiftUI/Utils/PictureInPicture/PictureInPictureViewFactory.swift

@@ -14,6 +14,8 @@ import SwiftUI
 /// ensures thread safety with `@unchecked Sendable` conformance.
 final class PictureInPictureViewFactory: @unchecked Sendable {
 
+    let source: any ViewFactory
+
     private let _makeParticipantImageView: (CallParticipant) -> AnyView
 
     /// Creates a new instance of `PictureInPictureViewFactory`.
@@ -22,6 +24,7 @@ final class PictureInPictureViewFactory: @unchecked Sendable {
     ///   protocol, used to create the participant image views.
     @MainActor
     init<Factory: ViewFactory>(_ viewFactory: Factory) {
+        source = viewFactory
         _makeParticipantImageView = {
             AnyView(
                 CallParticipantImageView(

Sources/StreamVideoSwiftUI/Utils/PictureInPicture/StreamPictureInPictureAdapter.swift

@@ -82,6 +82,17 @@ public final class StreamPictureInPictureAdapter: @unchecked Sendable {
                 .store(in: disposableBag)
         }
     }
+
+    // MARK: - State updaters
+
+    /// Updates the ViewFactory instance the will be used by Picture-in-Picture to create UI components.
+    @MainActor
+    public func setViewFactory<V: ViewFactory>(_ viewFactory: V) {
+        guard let store else {
+            return
+        }
+        store.dispatch(.setViewFactory(.init(viewFactory)))
+    }
 }
 
 /// Provides the default value for the Picture-in-Picture adapter.

StreamVideoSwiftUITests/Utils/PictureInPicture/StreamPictureInPictureAdapterTests.swift

@@ -37,4 +37,18 @@ final class StreamPictureInPictureAdapterTests: XCTestCase, @unchecked Sendable
 
         await fulfilmentInMainActor { self.subject.store?.state.sourceView === view }
     }
+
+    // MARK: - ViewFactory updated
+
+    @MainActor
+    func test_setViewFactory_storeWasUpdated() async {
+        final class CustomViewFactory: ViewFactory {}
+        _ = subject
+        await fulfillment { self.subject.store != nil }
+        let viewFactory = CustomViewFactory()
+
+        subject.setViewFactory(viewFactory)
+
+        await fulfillment { self.subject.store?.state.viewFactory.source === viewFactory }
+    }
 }