Returns the ending layout information for an item being removed from the collection view.
SDK
- macOS 10.11+
Framework
- App
Kit
Declaration
- (NSCollectionParameters
itemIndexPathThe index path of the item being removed. You can use this path to retrieve any relevant information from the collection view’s data source.
Return Value
The layout attributes object that describes the item’s position and properties at the end of animations.
Discussion
When your app removes items from the collection view, the collection view calls this method for each item you remove. Use this method to specify the layout attributes of the item after it has been removed. For example, you might return attributes that position the item offscreen or set its final alpha to 0. The collection view uses the attributes you return as the end point for any animations. (The start point of the animation is the item’s current location and attributes.) If you return nil, the layout uses the item’s current attributes for both the start point and end point of the animation.
The default implementation of this method returns nil. Subclasses are expected to override this method, as needed, and provide any final attributes.