Interface WizardStepPreviousPromise

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface WizardStepPreviousPromise

Interface to handle the transition to the previous step in a Wizard workflow asynchronously.

When a WizardStepPreviousPromise is associated with a step, the navigation to the previous step proceeds only if the promise resolves to true.

Method Summary

Modifier and Type	Method	Description
Promise<Boolean>	onPrevious(Wizard wizard, WizardStep current, WizardStep previous)	Called when the user attempts to navigate to the previous step.

Method Details

onPrevious

Promise<Boolean> onPrevious(Wizard wizard,
 WizardStep current,
 WizardStep previous)

Called when the user attempts to navigate to the previous step.

Parameters:

wizard - the wizard instance

current - the current step being left

previous - the previous step to be entered

Returns:

a Promise that resolves to true to allow the transition, or false to stay on the current step