---
title: UICollectionViewDiffableDataSourceSectionSnapshotHandlers
framework: uikit
role: symbol
role_heading: Class
path: uikit/uicollectionviewdiffabledatasourcesectionsnapshothandlers
---

# UICollectionViewDiffableDataSourceSectionSnapshotHandlers

Handlers for expanding and collapsing items.

## Declaration

```occ
@interface UICollectionViewDiffableDataSourceSectionSnapshotHandlers : NSObject
```

## Topics

### Expanding and collapsing items

- [shouldCollapseItemHandler](uikit/uicollectionviewdiffabledatasourcesectionsnapshothandlers/shouldcollapseitemhandler.md)
- [shouldExpandItemHandler](uikit/uicollectionviewdiffabledatasourcesectionsnapshothandlers/shouldexpanditemhandler.md)
- [willCollapseItemHandler](uikit/uicollectionviewdiffabledatasourcesectionsnapshothandlers/willcollapseitemhandler.md)
- [willExpandItemHandler](uikit/uicollectionviewdiffabledatasourcesectionsnapshothandlers/willexpanditemhandler.md)
- [snapshotForExpandingParentItemHandler](uikit/uicollectionviewdiffabledatasourcesectionsnapshothandlers/snapshotforexpandingparentitemhandler.md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [NSCopying](foundation/nscopying.md)

## See Also

### Supporting expanding and collapsing

- [sectionSnapshotHandlers](uikit/uicollectionviewdiffabledatasourcereference/sectionsnapshothandlers.md)