From 269d0535bd454e665b8c25d342a3d07f582dea06 Mon Sep 17 00:00:00 2001
From: Maurice Parker <mo@vincode.io>
Date: Tue, 10 Oct 2023 20:28:26 -0500
Subject: [PATCH] Fix for scroll indicators on iOS when using Dark Mode

---
 iOS/Article/WebViewController.swift | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/iOS/Article/WebViewController.swift b/iOS/Article/WebViewController.swift
index 52cf28037..df4b46549 100644
--- a/iOS/Article/WebViewController.swift
+++ b/iOS/Article/WebViewController.swift
@@ -82,6 +82,28 @@ class WebViewController: UIViewController {
 
 	}
 	
+	override func viewWillAppear(_ animated: Bool) {
+		updateScrollIndicatorStyle()
+	}
+	
+	override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
+		updateScrollIndicatorStyle()
+	}
+	
+	
+	// See https://shadowfacts.net/2022/wkwebview-scroll-indicators-again/ for why this is necessary.
+	private func updateScrollIndicatorStyle() {
+		guard #available(iOS 15.4, *) else {
+			return
+		}
+		
+		if traitCollection.userInterfaceStyle == .dark {
+			webView?.scrollView.indicatorStyle = .white
+		} else {
+			webView?.scrollView.indicatorStyle = .black
+		}
+	}
+	
 	// MARK: Notifications
 	
 	@objc func webFeedIconDidBecomeAvailable(_ note: Notification) {