Hide context menus and swipe actions on instance public timelines

Tusker/Screens/Timeline/InstanceTimelineViewController.swift

@@ -77,6 +77,27 @@ class InstanceTimelineViewController: TimelineTableViewController {
         // no-op, we don't currently support viewing whole conversations from other instances
     }
     
+    override func tableView(_ tableView: UITableView, contextMenuConfigurationForRowAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
+        // don't show other screens or actions for other instances
+        return nil
+    }
+    
+    override func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
+        // don't show swipe actions for other instances
+        return nil
+    }
+    
+    override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
+        // only show more actions for other instances
+        let more = UIContextualAction(style: .normal, title: "More") { (action, view, completion) in
+            completion(true)
+            self.showMoreOptions(forStatus: self.timelineSegments[indexPath.section][indexPath.row].id, sourceView: tableView.cellForRow(at: indexPath))
+        }
+        more.image = UIImage(systemName: "ellipsis.circle.fill")
+        more.backgroundColor = .lightGray
+        return UISwipeActionsConfiguration(actions: [more])
+    }
+    
     // MARK: - Interaction
     @objc func toggleSaveButtonPressed() {
         if SavedDataManager.shared.isSaved(instance: instanceURL, for: parentMastodonController!.accountInfo!) {