Mask trending link card previews with same corner radius as cells

Tusker/Screens/Search/SearchViewController.swift

@@ -265,6 +265,7 @@ extension SearchViewController: UICollectionViewDelegate {
         }
     }
     
+    @available(iOS, obsoleted: 16.0)
     func collectionView(_ collectionView: UICollectionView, contextMenuConfigurationForItemAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
         guard let item = dataSource.itemIdentifier(for: indexPath) else {
             return nil
@@ -294,6 +295,34 @@ extension SearchViewController: UICollectionViewDelegate {
             fatalError("todo")
         }
     }
+    
+    // implementing the highlightPreviewForItemAt method seems to prevent the old, single IndexPath variant of this method from being called on iOS 16
+    @available(iOS 16.0, *)
+    func collectionView(_ collectionView: UICollectionView, contextMenuConfigurationForItemsAt indexPaths: [IndexPath], point: CGPoint) -> UIContextMenuConfiguration? {
+        guard indexPaths.count == 1 else {
+            return nil
+        }
+        return self.collectionView(collectionView, contextMenuConfigurationForItemAt: indexPaths[0], point: point)
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, contextMenuConfiguration configuration: UIContextMenuConfiguration, highlightPreviewForItemAt indexPath: IndexPath) -> UITargetedPreview? {
+        switch dataSource.itemIdentifier(for: indexPath) {
+        case .link(_):
+            guard let cell = collectionView.cellForItem(at: indexPath) else {
+                return nil
+            }
+            let params = UIPreviewParameters()
+            params.visiblePath = UIBezierPath(roundedRect: cell.bounds, cornerRadius: cell.contentView.layer.cornerRadius)
+            return UITargetedPreview(view: cell, parameters: params)
+
+        default:
+            return nil
+        }
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, contextMenuConfiguration configuration: UIContextMenuConfiguration, dismissalPreviewForItemAt indexPath: IndexPath) -> UITargetedPreview? {
+        return self.collectionView(collectionView, contextMenuConfiguration: configuration, highlightPreviewForItemAt: indexPath)
+    }
 }
 
 extension SearchViewController: UICollectionViewDragDelegate {