From 8d79264ab2b50f8aa29b33ea1c39c08bf296aa69 Mon Sep 17 00:00:00 2001
From: Doug <douglase@element.io>
Date: Fri, 7 Feb 2025 09:59:54 +0000
Subject: [PATCH] Find the page view controller's scroll view recursively.

---
 .../View/TimelineMediaPreviewController.swift     | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/ElementX/Sources/Screens/FilePreviewScreen/View/TimelineMediaPreviewController.swift b/ElementX/Sources/Screens/FilePreviewScreen/View/TimelineMediaPreviewController.swift
index 726e46bbd5..b52a32cf81 100644
--- a/ElementX/Sources/Screens/FilePreviewScreen/View/TimelineMediaPreviewController.swift
+++ b/ElementX/Sources/Screens/FilePreviewScreen/View/TimelineMediaPreviewController.swift
@@ -25,7 +25,7 @@ class TimelineMediaPreviewController: QLPreviewController {
     
     private var navigationBar: UINavigationBar? { view.subviews.first?.subviews.first { $0 is UINavigationBar } as? UINavigationBar }
     private var toolbar: UIToolbar? { view.subviews.first?.subviews.last { $0 is UIToolbar } as? UIToolbar }
-    private var pageScrollView: UIScrollView? { view.subviews.first?.subviews.first?.subviews.first?.subviews.first?.subviews.first?.subviews.first as? UIScrollView }
+    private var pageScrollView: UIScrollView? { view.firstScrollView() }
     private var captionView: UIView { captionHostingController.view }
     
     override var overrideUserInterfaceStyle: UIUserInterfaceStyle {
@@ -344,6 +344,19 @@ private struct DownloadIndicatorView: View {
     }
 }
 
+// MARK: - Helpers
+
+private extension UIView {
+    func firstScrollView() -> UIScrollView? {
+        for view in subviews {
+            if let scrollView = view as? UIScrollView ?? view.firstScrollView() {
+                return scrollView
+            }
+        }
+        return nil
+    }
+}
+
 private extension UISheetPresentationController.Detent {
     static func height(_ height: CGFloat) -> UISheetPresentationController.Detent {
         .custom { _ in height }