Swizzle WKWebView to fix scroll indicator in dark mode

This commit is contained in:
Shadowfacts 2022-01-14 18:59:51 -05:00
parent c3d0174f23
commit 949f2bca01
1 changed files with 21 additions and 4 deletions

View File

@ -6,15 +6,15 @@
//
import UIKit
import CoreData
import WebKit
import OSLog
@main
class AppDelegate: UIResponder, UIApplicationDelegate {
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
swizzleWKWebView()
return true
}
@ -31,6 +31,23 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
// If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
// Use this method to release any resources that were specific to the discarded scenes, as they will not return.
}
private func swizzleWKWebView() {
let selector = Selector(("_updateScrollViewBackground"))
var originalIMP: IMP?
let imp = imp_implementationWithBlock({ (self: WKWebView) in
if let originalIMP = originalIMP {
let original = unsafeBitCast(originalIMP, to: (@convention(c) (WKWebView, Selector) -> Void).self)
original(self, selector)
} else {
os_log(.error, "Missing originalIMP for -[WKWebView _updateScrollViewBackground], did WebKit change?")
}
self.scrollView.indicatorStyle = .default
} as (@convention(block) (WKWebView) -> Void))
originalIMP = class_replaceMethod(WKWebView.self, selector, imp, "v@:")
}
}