// A NamedAction describes an Action that also has a unique identifier. This
// interface is used by the Debounce Executor to prevent duplicate actions from
// running concurrently.
type NamedAction interface {
	Action

	// ID returns the name for this Action. Identical actions
	// should return the same ID value.
	ID() string
}

type namedAction struct {
	ActionFunc
	name string
}

func (a namedAction) ID() string { return a.name }

// Named creates a NamedAction from fn, with n as its name. This function is
// just a helper to simplify creating NamedActions.
func Named(n string, fn ActionFunc) NamedAction {
	return namedAction{
		ActionFunc: fn,
		name:       n,
	}
}