SegmentedCollectionViewDelegate

public protocol SegmentedCollectionViewDelegate: AnyObject

A set of methods that your delegate object must implement to interact with the segmented collection view.

A default implementation of the function considered optional exists for objects inheriting from NSObject.

Managing Selections


                    
                    
                    segmentedCollectionView(_:didSelectItem:)

Tells the delegate that the specified item is now selected.

Declaration

Swift

func segmentedCollectionView(_ collectionView: SegmentedCollectionView,

Parameters

`collectionView`	A `SegmentedCollectionView` object informing the delegate about the new item selection.
`item`	The new selected item.


                    
                    
                    segmentedCollectionView(_:willDisplayHeader:)

Default implementation

Tells the delegate that the segmented collection view is about to draw its header view.

Default Implementation

Declaration

Swift

func segmentedCollectionView(_ collectionView: SegmentedCollectionView,

Parameters

`collectionView`	A `SegmentedCollectionView` object informing the delegate of this impending event.
`header`	The header about to be drawn.

Configuring the UI Style


                    
                    
                    heightOfHeaderView(in:)

Default implementation

Asks the delegate for the height to use for the header view.

Default Implementation

Declaration

Swift

func heightOfHeaderView(in collectionView: SegmentedCollectionView) -> CGFloat

Parameters


                                collectionView

The SegmentedCollectionView object requesting this information.

Return Value

A nonnegative floating-point value that specifies the height (in points) that the header view should be.


                    
                    
                    verticalPaddingForItems(in:)

Default implementation

Asks the delegate for the size of the vertical padding to use for items.

Default Implementation

Declaration

Swift

func verticalPaddingForItems(in collectionView: SegmentedCollectionView) -> CGFloat

Parameters


                                collectionView

The SegmentedCollectionView object requesting this information.

Return Value

A nonnegative floating-point value that specifies the dimension (in points) that the vertical padding of the collection view should be.


                    
                    
                    segmentedCollectionView(_:numberOfColumnsForSection:)

Default implementation

Asks the delegate how many columns should be displayed for one of the section of the view.

Default Implementation

Declaration

Swift

func segmentedCollectionView(_ collectionView: SegmentedCollectionView,

Parameters

`collectionView`	The `SegmentedCollectionView` object requesting this information.
`section`	An index number identifying a section of the collectionView.

Return Value

The number of columns in section.


                    
                    
                    segmentedCollectionView(_:heightForItemWithWidth:forSection:)

Default implementation

Asks the delegate for the height to use for a row in a specified location.

Default Implementation

Declaration

Swift

func segmentedCollectionView(_ collectionView: SegmentedCollectionView,

Parameters

`collectionView`	The `SegmentedCollectionView` object requesting this information.
`width`	The width that will be used for the cell.
`section`	An index number identifying a section of the collectionView.

Return Value

A nonnegative floating-point value that specifies the height (in points) that the item’s cell should be.