         if let index = rootViewModel?.indexOfItem(folderViewModel) {
             if let cell = cellForItemAtIndexPath(index.toIndexPath()) as? FolderCollectionViewCell {
                 openFolderCollectionView = cell.collectionView
+                
+                let zoomedLayout = CollectionViewLayout()
                 zoomedLayout.zoomToIndex = index
+                
                 setCollectionViewLayout(zoomedLayout, animated: true)
             }
         }

        
        if let index = rootViewModel?.indexOfItem(folderViewModel) {
            openFolderCollectionView = nil
            zoomedLayout.zoomToIndex = nil
            setCollectionViewLayout(regularLayout, animated: true)
        }
    }


class RootCollectionView: SwiftBoardCollectionView, UIGestureRecognizerDelegate, SwiftBoardListViewModelDelegate, RootViewModelDelegate {
    private var listDataSource: ListViewModelDataSource?
    private var regularLayout = CollectionViewLayout()
    
    private var tapGestureRecognizer: UITapGestureRecognizer!
