Core

A custom collection view layout designed to present items in a grid-like format, similar to UITableView, while aligning content to either the leading or trailing edge of the UICollectionView. This layout supports chat-style interfaces by preserving a consistent content offset from the bottom. It also accommodates self-sizing cells and supplementary views, ensuring dynamic and responsive content presentation.

Custom Properties:

CollectionViewChatLayout.delegate

CollectionViewChatLayout.settings

CollectionViewChatLayout.keepContentOffsetAtBottomOnBatchUpdates

CollectionViewChatLayout.processOnlyVisibleItemsOnAnimatedBatchUpdates

CollectionViewChatLayout.keepContentAtBottomOfVisibleArea

CollectionViewChatLayout.visibleBounds

CollectionViewChatLayout.layoutFrame

Custom Methods:

CollectionViewChatLayout.getContentOffsetSnapshot(...)

CollectionViewChatLayout.restoreContentOffset(...)

CollectionViewChatLayout.reconfigureItems(...)

CollectionViewChatLayout.indexPathForItePinnedAt(...)

See more

@MainActor
open class CollectionViewChatLayout : UICollectionViewLayout

CollectionViewChatLayout delegate

See more

@MainActor
public protocol ChatLayoutDelegate : AnyObject

Custom implementation of UICollectionViewLayoutAttributes

See more

@MainActor
public final class ChatLayoutAttributes : UICollectionViewLayoutAttributes

CollectionViewChatLayout settings.

See more

public struct ChatLayoutSettings : Equatable, Sendable

Represents content offset position expressed by the specific item and it offset from the top or bottom edge.

See more

public struct ChatLayoutPositionSnapshot : Hashable, Sendable

Custom implementation of UICollectionViewLayoutInvalidationContext

See more

@MainActor
public final class ChatLayoutInvalidationContext : UICollectionViewLayoutInvalidationContext

Type of the item supported by CollectionViewChatLayout

See more

public enum ItemKind : CaseIterable, Hashable, Sendable

Represents desired item size.

See more

public enum ItemSize : Hashable, Sendable

Represent item alignment in collection view layout

See more

public enum ChatItemAlignment : Hashable, Sendable

Represents pinning behavour of the element.

See more

public enum ChatItemPinningType : Hashable, Sendable

Represents the point in time when CollectionViewChatLayout asks about layout attributes modification.

See more

public enum InitialAttributesRequestType : Hashable