Merge pull request #21154 from wordpress-mobile/task/20783-prepublish…

…ing-tableview-margin

WordPress/Classes/ViewRelated/Post/Prepublishing Nudge/PrepublishingNavigationController.swift

@@ -44,6 +44,8 @@ class PrepublishingNavigationController: LightNavigationController {
     init(rootViewController: UIViewController, shouldDisplayPortrait: Bool) {
         self.shouldDisplayPortrait = shouldDisplayPortrait
         super.init(rootViewController: rootViewController)
+
+        configureNavigationBar()
     }
 
     required init?(coder: NSCoder) {
@@ -56,6 +58,20 @@ class PrepublishingNavigationController: LightNavigationController {
         }
     }
 
+    /// Updates the navigation bar color so it matches the view's background.
+    ///
+    /// Originally, in dark mode the navigation bar color is grayish, but there's a few points gap on top of the
+    /// navigation bar to accommodate the `GripButton` from `BottomSheetViewController`. The bottom sheet itself
+    /// assigns the background color according to its child controller's view background color.
+    private func configureNavigationBar() {
+        let appearance = UINavigationBarAppearance()
+        appearance.configureWithOpaqueBackground()
+        appearance.backgroundColor = .basicBackground
+
+        navigationBar.scrollEdgeAppearance = appearance
+        navigationBar.compactAppearance = appearance
+    }
+
     private enum Constants {
         static let iPadPreferredContentSize = CGSize(width: 300.0, height: 300.0)
     }

WordPress/Classes/ViewRelated/Post/PrepublishingViewController.swift

@@ -160,9 +160,6 @@ class PrepublishingViewController: UITableViewController {
                 self?.hasSelectedText = true
             }
         })
-
-        // when displayed in a popover, update content size so the window is resized to fit the current content.
-        navigationController?.preferredContentSize = tableView.contentSize
     }
 
     override func viewWillDisappear(_ animated: Bool) {