MessagesLayoutDelegate

public protocol MessagesLayoutDelegate: AnyObject

A protocol used by the MessagesCollectionViewFlowLayout object to determine the size and layout of a MessageCollectionViewCell and its contents.


                    
                    
                    headerViewSize(for:in:)

Default implementation

Specifies the size to use for a header view.

Note

The default value returned by this method is a size of GGSize.zero.

Default Implementation

Declaration

Swift

func headerViewSize(for section: Int, in messagesCollectionView: MessagesCollectionView) -> CGSize

Parameters

`section`	The section number of the header.
`messagesCollectionView`	The `MessagesCollectionView` in which this header will be displayed.


                    
                    
                    footerViewSize(for:in:)

Default implementation

Specifies the size to use for a footer view.

Note

The default value returned by this method is a size of GGSize.zero.

Default Implementation

Declaration

Swift

func footerViewSize(for section: Int, in messagesCollectionView: MessagesCollectionView) -> CGSize

Parameters

`section`	The section number of the footer.
`messagesCollectionView`	The `MessagesCollectionView` in which this footer will be displayed.


                    
                    
                    cellTopLabelHeight(for:at:in:)

Default implementation

Specifies the height for the MessageContentCell‘s top label.

Note

The default value returned by this method is zero.

Default Implementation

Declaration

Swift

func cellTopLabelHeight(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGFloat

Parameters

`message`	The `MessageType` that will be displayed for this cell.
`indexPath`	The `IndexPath` of the cell.
`messagesCollectionView`	The `MessagesCollectionView` in which this cell will be displayed.


                    
                    
                    messageTopLabelHeight(for:at:in:)

Default implementation

Specifies the height for the message bubble’s top label.

Note

The default value returned by this method is zero.

Default Implementation

Declaration

Swift

func messageTopLabelHeight(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGFloat

Parameters

`message`	The `MessageType` that will be displayed for this cell.
`indexPath`	The `IndexPath` of the cell.
`messagesCollectionView`	The `MessagesCollectionView` in which this cell will be displayed.


                    
                    
                    messageBottomLabelHeight(for:at:in:)

Default implementation

Specifies the height for the MessageContentCell‘s bottom label.

Note

The default value returned by this method is zero.

Default Implementation

Declaration

Swift

func messageBottomLabelHeight(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGFloat

Parameters

`message`	The `MessageType` that will be displayed for this cell.
`indexPath`	The `IndexPath` of the cell.
`messagesCollectionView`	The `MessagesCollectionView` in which this cell will be displayed.


                    
                    
                    avatarSize(for:at:in:)

Extension method

Undocumented

Declaration

Swift

func avatarSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize


                    
                    
                    avatarPosition(for:at:in:)

Extension method

Undocumented

Declaration

Swift

func avatarPosition(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> AvatarPosition


                    
                    
                    messageLabelInset(for:at:in:)

Extension method

Undocumented

Declaration

Swift

func messageLabelInset(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> UIEdgeInsets


                    
                    
                    messagePadding(for:at:in:)

Extension method

Undocumented

Declaration

Swift

func messagePadding(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> UIEdgeInsets


                    
                    
                    cellTopLabelAlignment(for:at:in:)

Extension method

Undocumented

Declaration

Swift

func cellTopLabelAlignment(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> LabelAlignment


                    
                    
                    cellBottomLabelAlignment(for:at:in:)

Extension method

Undocumented

Declaration

Swift

func cellBottomLabelAlignment(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> LabelAlignment


                    
                    
                    widthForMedia(message:at:with:in:)

Extension method

Undocumented

Declaration

Swift

func widthForMedia(message: MessageType, at indexPath: IndexPath, with maxWidth: CGFloat, in messagesCollectionView: MessagesCollectionView) -> CGFloat


                    
                    
                    heightForMedia(message:at:with:in:)

Extension method

Undocumented

Declaration

Swift

func heightForMedia(message: MessageType, at indexPath: IndexPath, with maxWidth: CGFloat, in messagesCollectionView: MessagesCollectionView) -> CGFloat


                    
                    
                    widthForLocation(message:at:with:in:)

Extension method

Undocumented

Declaration

Swift

func widthForLocation(message: MessageType, at indexPath: IndexPath, with maxWidth: CGFloat, in messagesCollectionView: MessagesCollectionView) -> CGFloat


                    
                    
                    heightForLocation(message:at:with:in:)

Extension method

Undocumented

Declaration

Swift

func heightForLocation(message: MessageType, at indexPath: IndexPath, with maxWidth: CGFloat, in messagesCollectionView: MessagesCollectionView) -> CGFloat

shouldCacheLayoutAttributes(for:) Extension method
Undocumented
Declaration
Swift

func shouldCacheLayoutAttributes(for message: MessageType) -> Bool