RVS_SpinnerDelegate

@available(iOS 13.0, *)
public protocol RVS_SpinnerDelegate : AnyObject

This is the delegate protocol for the Spinner. It is a Swift class protocol, because it provides the delegate with a Swift object, and is weakly referenced by the Spinner.

Its methods are all “optional” (they have default implementations that do nothing), but the control works best if you use them.


                    
                    
                    spinner(_:singleValueSelected:)

Default implementation

This is called if there was only one value, and the user selected the central button. In this case, the control will not open, but we will send a message.

Default Implementation

This is an optional method.

This is called if there was only one value, and the user selected the central button. In this case, the control will not open, but we will send a message.

Declaration

Swift

func spinner(_: RVS_Spinner, singleValueSelected: RVS_SpinnerDataItem?)

Parameters

`spinner`	The RVS_Spinner instance.
`singleValueSelected`	The value that was just selected. This is optional.


                    
                    
                    spinner(_:hasSelectedTheValue:)

Default implementation

This is called after the user has used the Spinner to select a value.

Default Implementation

This is called after the user has used the Spinner to select a value.

Declaration

Swift

func spinner(_: RVS_Spinner, hasSelectedTheValue: RVS_SpinnerDataItem?)

Parameters

`spinner`	The RVS_Spinner instance.
`hasSelectedTheValue`	The value that was just selected. This is optional.


                    
                    
                    spinner(_:hasOpenedWithTheValue:)

Default implementation

This is called after the user has “opened” the Spinner.

Default Implementation

This is called after the user has “opened” the Spinner.

Declaration

Swift

func spinner(_: RVS_Spinner, hasOpenedWithTheValue: RVS_SpinnerDataItem?)

Parameters

`spinner`	The RVS_Spinner instance.
`hasOpenedWithTheValue`	The value that was selected when the control opened. This is optional.


                    
                    
                    spinner(_:hasClosedWithTheValue:)

Default implementation

This is called after the user has “closed” the Spinner.

Default Implementation

This is called after the user has “closed” the Spinner.

Declaration

Swift

func spinner(_: RVS_Spinner, hasClosedWithTheValue: RVS_SpinnerDataItem?)

Parameters

`spinner`	The RVS_Spinner instance.
`hasClosedWithTheValue`	The value that was selected when the control closed. This is optional.


                    
                    
                    spinner(_:willCloseWithTheValue:)

Default implementation

This is called before the user closes the spinner. It allows the delegate to interrupt the close process.

Default Implementation

This is called before the user closes the spinner. It allows the delegate to interrupt the close process.

Declaration

Swift

func spinner(_: RVS_Spinner, willCloseWithTheValue: RVS_SpinnerDataItem?) -> Bool

Parameters

`spinner`	The RVS_Spinner instance.
`willCloseWithTheValue`	The value that was selected when the control close was attempted. This is optional.

Return Value

True, if the spinner is allowed to continue closing. False, to prevent the spinner from closing.