Core

A collection view layout that can display items in a grid similar to UITableView but aligning them to the leading or trailing edge of the UICollectionView. Helps to maintain chat like behavior by keeping content offset from the bottom constant. Can deal with autosizing cells and supplementary views.

Custom Properties:

CollectionViewChatLayout.delegate

CollectionViewChatLayout.settings

CollectionViewChatLayout.keepContentOffsetAtBottomOnBatchUpdates

CollectionViewChatLayout.processOnlyVisibleItemsOnAnimatedBatchUpdates

CollectionViewChatLayout.visibleBounds

CollectionViewChatLayout.layoutFrame

Custom Methods:

CollectionViewChatLayout.getContentOffsetSnapshot(...)

CollectionViewChatLayout.restoreContentOffset(...)

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public final class CollectionViewChatLayout : UICollectionViewLayout

CollectionViewChatLayout delegate

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public protocol ChatLayoutDelegate : AnyObject

Custom implementation of UICollectionViewLayoutAttributes

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public final class ChatLayoutAttributes : UICollectionViewLayoutAttributes

CollectionViewChatLayout settings.

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public struct ChatLayoutSettings : Equatable

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

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public struct ChatLayoutPositionSnapshot : Hashable

Custom implementation of UICollectionViewLayoutInvalidationContext

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public final class ChatLayoutInvalidationContext : UICollectionViewLayoutInvalidationContext

Type of the item supported by CollectionViewChatLayout

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public enum ItemKind : CaseIterable, Hashable

Represents desired item size.

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public enum ItemSize : Hashable

Represent item alignment in collection view layout

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public enum ChatItemAlignment : Hashable

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

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public enum InitialAttributesRequestType : Hashable