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Expose validation state via Controls context #28

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Expose validation state via Controls context #28

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12 changes: 11 additions & 1 deletion src/Controls.js
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ type Props = {|
isLast: boolean,
isLoading: boolean,
activeIndex: number,
isStepValid: boolean,
) => React$Node,
|};

Expand All @@ -22,9 +23,18 @@ const Controls = ({ render }: Props) => {
isLast,
isLoading,
activeIndex,
isStepValid,
} = useContext(ControlsContext);

return render(onNext, onPrevious, isFirst, isLast, isLoading, activeIndex);
return render(
onNext,
onPrevious,
isFirst,
isLast,
isLoading,
activeIndex,
isStepValid,
);
};

export default Controls;
14 changes: 14 additions & 0 deletions src/Wizard.js
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Original file line number Diff line number Diff line change
Expand Up @@ -17,12 +17,14 @@ type Props = {|
const Wizard = ({ children, onComplete, stateManager, debug }: Props) => {
const [index, setIndex] = useState<number | null>(null);
const [steps, setSteps] = useState<Array<Losen$Step>>([]);
const [validSteps, setValidSteps] = useState<Array<boolean>>([]);
const [isLoading, setLoadingState] = useState(false);

function registerStep(step) {
const alreadyRegistered = steps.map(el => el.name).includes(step.name);
if (!alreadyRegistered) {
setSteps(previousSteps => [...previousSteps, step]);
setValidSteps(previousSteps => [...previousSteps, true]);
}
}

Expand All @@ -35,11 +37,20 @@ const Wizard = ({ children, onComplete, stateManager, debug }: Props) => {
]);
}

function updateValidSteps(stepIndex, isValid) {
setValidSteps(previousSteps => [
...previousSteps.slice(0, stepIndex),
isValid,
...previousSteps.slice(stepIndex + 1),
]);
}

async function onNext() {
if (index === null) {
return;
}
const { validator } = steps[index];

const next = findNextValid(steps, index);

const nextAction =
Expand All @@ -51,8 +62,10 @@ const Wizard = ({ children, onComplete, stateManager, debug }: Props) => {
try {
setLoadingState(true);
await validator();
updateValidSteps(index, true);
nextAction();
} catch (error) {
updateValidSteps(index, false);
if (error instanceof ValidationError) {
console.error('ReactLosen', error); // eslint-disable-line
} else {
Expand Down Expand Up @@ -124,6 +137,7 @@ const Wizard = ({ children, onComplete, stateManager, debug }: Props) => {
index !== null ? findPreviousValid(steps, index) === index : false,
isLast: index !== null ? findNextValid(steps, index) === index : false,
activeIndex: index,
isStepValid: index !== null && validSteps ? validSteps[index] : true,
}}>
<StepContext.Provider
value={{
Expand Down