supplementalTarget(forAction:sender:)
Finds a target for an action method.
Declaration
func supplementalTarget(forAction action: Selector, sender: Any?) -> Any?Parameters
- action:
The requested action.
- sender:
The message sender.
Return Value
An object which responds to the action, or nil.
Discussion
If this NSResponder instance does not itself respondsToSelector:, then supplementalTargetForAction:sender: is called.
This method should return an object which responds to the action; if this responder does not have a supplemental object that does that, the implementation of this method should call super’s supplementalTargetForAction:sender:.
NSResponder’s implementation returns nil.