-
shouldPresentHeader(_:
Default implementationat: ) ChatLayout
will call this method to ask if it should present the header in the current layout.Default Implementation
Default implementation returns:
false
.Declaration
Swift
func shouldPresentHeader(_ chatLayout: ChatLayout, at sectionIndex: Int) -> Bool
Parameters
chatLayout
ChatLayout reference.
sectionIndex
Index of the section.
Return Value
Bool
. -
shouldPresentFooter(_:
Default implementationat: ) ChatLayout
will call this method to ask if it should present the footer in the current layout.Default Implementation
Default implementation returns:
false
.Declaration
Swift
func shouldPresentFooter(_ chatLayout: ChatLayout, at sectionIndex: Int) -> Bool
Parameters
chatLayout
ChatLayout reference.
sectionIndex
Index of the section.
Return Value
Bool
. -
sizeForItem(_:
Default implementationof: at: ) ChatLayout
will call this method to ask what size the item should have.Default Implementation
Default implementation returns:
ItemSize.auto
.Declaration
Swift
func sizeForItem(_ chatLayout: ChatLayout, of kind: ItemKind, at indexPath: IndexPath) -> ItemSize
Parameters
chatLayout
ChatLayout reference.
kind
Type of element represented by
ItemKind
.indexPath
Index path of the item.
Return Value
-
alignmentForItem(_:
Default implementationof: at: ) ChatLayout
will call this method to ask what type of alignment the item should have.Default Implementation
Default implementation returns:
ChatItemAlignment.fullWidth
.Declaration
Swift
func alignmentForItem(_ chatLayout: ChatLayout, of kind: ItemKind, at indexPath: IndexPath) -> ChatItemAlignment
Parameters
chatLayout
ChatLayout reference.
kind
Type of element represented by
ItemKind
.indexPath
Index path of the item.
Return Value
-
initialLayoutAttributesForInsertedItem(_:
Default implementationof: at: modifying: on: ) Asks the delegate to modify a layout attributes instance so that it represents the initial visual state of an item being inserted.
The
originalAttributes
instance is a reference type, and therefore can be modified directly.Default Implementation
Default implementation sets a
ChatLayoutAttributes.alpha
to zero.Declaration
Swift
func initialLayoutAttributesForInsertedItem(_ chatLayout: ChatLayout, of kind: ItemKind, at indexPath: IndexPath, modifying originalAttributes: ChatLayoutAttributes, on state: InitialAttributesRequestType)
-
finalLayoutAttributesForDeletedItem(_:
Default implementationof: at: modifying: ) Asks the delegate to modify a layout attributes instance so that it represents the final visual state of an item being removed via
UICollectionView.deleteSections(_:)
.The
originalAttributes
instance is a reference type, and therefore can be modified directly.Default Implementation
Default implementation sets a
ChatLayoutAttributes.alpha
to zero.Declaration
Swift
func finalLayoutAttributesForDeletedItem(_ chatLayout: ChatLayout, of kind: ItemKind, at indexPath: IndexPath, modifying originalAttributes: ChatLayoutAttributes)