@dnb/eufemia/es/extensions/forms/hooks/useValueProps.js

DNB Eufemia Design System UI Library

"use client";

import { useCallback, useContext, useEffect, useReducer, useRef } from 'react';
import useExternalValue from "./useExternalValue.js";
import usePath from "./usePath.js";
import DataContext from "../DataContext/Context.js";
import ValueProviderContext from "../Value/Provider/ValueProviderContext.js";
import SummaryListContext from "../Value/SummaryList/SummaryListContext.js";
export default function useValueProps(localProps) {
  var _useExternalValue, _props$label;
  const [, forceUpdate] = useReducer(() => ({}), {});
  const {
    extend
  } = useContext(ValueProviderContext);
  const props = extend(localProps);
  const {
    verifyChild
  } = useContext(SummaryListContext) || {};
  verifyChild?.();
  const {
    path: pathProp,
    value: valueProp,
    itemPath,
    defaultValue,
    inheritVisibility,
    inheritLabel,
    transformIn = external => external,
    toInput = internal => internal,
    fromExternal = external => external
  } = props;
  const transformers = useRef({
    transformIn,
    toInput,
    fromExternal
  });
  const {
    path
  } = usePath({
    path: pathProp,
    itemPath
  });
  const externalValue = (_useExternalValue = useExternalValue({
    path,
    itemPath,
    value: valueProp,
    transformers
  })) !== null && _useExternalValue !== void 0 ? _useExternalValue : defaultValue;
  const {
    fieldInternalsRef,
    mountedFieldsRef,
    setValueInternals,
    setFieldEventListener
  } = useContext(DataContext) || {};
  setValueInternals?.(path, props);
  useEffect(() => {
    if (inheritLabel || inheritVisibility) {
      setFieldEventListener?.(path, 'onMount', () => {
        requestAnimationFrame(forceUpdate);
      });
    }
  }, [setFieldEventListener, path, inheritVisibility, inheritLabel]);
  const shouldBeVisible = useCallback(path => {
    const item = mountedFieldsRef?.current?.get(path);
    if (!item || !inheritVisibility) {
      return true;
    }
    return item.isVisible !== false && (item.isPreMounted !== false || item.wasStepChange === true);
  }, [inheritVisibility, mountedFieldsRef]);
  const value = shouldBeVisible(path) ? transformIn(toInput(externalValue)) : undefined;
  const label = (_props$label = props.label) !== null && _props$label !== void 0 ? _props$label : inheritLabel ? fieldInternalsRef?.current?.[path]?.props?.label : undefined;
  return {
    ...props,
    label,
    value
  };
}
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