CollectionViewUpdater
open class CollectionViewUpdater : StorageUpdating
CollectionViewUpdater
is responsible for updating UICollectionView
, when it receives storage updates.
-
closure to be executed before content is updated
Declaration
Swift
open var willUpdateContent: ((StorageUpdate?) -> Void)?
-
closure to be executed after content is updated
Declaration
Swift
open var didUpdateContent: ((StorageUpdate?) -> Void)?
-
Closure to be executed, when reloading an item.
See also
DTCollectionViewManager.updateCellClosure()
method andDTCollectionViewManager.coreDataUpdater()
method.Declaration
Swift
open var reloadItemClosure: ((IndexPath, Any) -> Void)?
-
When this property is true, move events will be animated as delete event and insert event.
Declaration
Swift
open var animateMoveAsDeleteAndInsert: Bool
-
Boolean property, that indicates whether batch updates are completed.
Note
this can be useful if you are deciding whether to run another batch of animations - insertion, deletions etc. UICollectionView is not very tolerant to multiple performBatchUpdates, executed at once.Declaration
Swift
open var batchUpdatesInProgress: Bool
-
If turned on, animates changes off screen, otherwise calls
collectionView.reloadData
when update come offscreen. To verify if tableView is onscreen,CollectionViewUpdater
compares collectionView.window to nil. Defaults to true.Declaration
Swift
open var animateChangesOffScreen: Bool
-
Creates updater.
Declaration
Swift
public init(collectionView: UICollectionView, reloadItem: ((IndexPath, Any) -> Void)? = nil, animateMoveAsDeleteAndInsert: Bool = false)
-
Updates
UICollectionView
with receivedupdate
. This method applies object and section changes inperformBatchUpdates
method.Declaration
Swift
open func storageDidPerformUpdate(_ update: StorageUpdate)
-
Call this method, if you want UICollectionView to be reloaded, and beforeContentUpdate: and afterContentUpdate: closures to be called.
Declaration
Swift
open func storageNeedsReloading()