@dnb/eufemia
Version:
DNB Eufemia Design System UI Library
75 lines (74 loc) • 3.56 kB
JavaScript
"use client";
import { useCallback, useContext, useMemo, useSyncExternalStore } from 'react';
import pointer, { isPath } from "../utils/json-pointer/index.js";
import DataContext from "../DataContext/Context.js";
import IterateItemContext from "../Iterate/IterateItemContext.js";
export default function useExternalValue(props) {
const {
path,
itemPath,
value = undefined,
getValueSnapshot,
transformers,
emptyValue = undefined
} = props;
const dataContext = useContext(DataContext);
const {
data,
subscribeDataValue,
getDataValue
} = dataContext || {};
const iterateItemContext = useContext(IterateItemContext);
const inIterate = Boolean(iterateItemContext);
const {
value: iterateElementValue
} = iterateItemContext || {};
const subscribablePath = isPath(path) ? path : undefined;
const subscribe = useCallback(callback => {
if (subscribablePath && subscribeDataValue) {
return subscribeDataValue(subscribablePath, callback);
}
return () => undefined;
}, [subscribablePath, subscribeDataValue]);
const getSnapshot = useCallback(() => {
if (subscribablePath && getDataValue) {
const value = getDataValue(subscribablePath);
return getValueSnapshot ? getValueSnapshot(value) : value;
}
return undefined;
}, [getDataValue, getValueSnapshot, subscribablePath]);
const dataValueSnapshot = useSyncExternalStore(subscribe, getSnapshot, getSnapshot);
const dataValue = getValueSnapshot && subscribablePath && getDataValue ? getDataValue(subscribablePath) : dataValueSnapshot;
return useMemo(() => {
if (value !== undefined && value !== emptyValue) {
var _transformers$current;
return (_transformers$current = transformers?.current?.fromExternal?.(value)) !== null && _transformers$current !== void 0 ? _transformers$current : emptyValue;
}
if (subscribablePath && getDataValue && (!inIterate || !itemPath || dataValue !== undefined)) {
var _transformers$current2;
return (_transformers$current2 = transformers?.current?.fromExternal?.(dataValue)) !== null && _transformers$current2 !== void 0 ? _transformers$current2 : emptyValue;
}
if (inIterate && itemPath) {
if (itemPath === '/') {
var _transformers$current3;
return (_transformers$current3 = transformers?.current?.fromExternal?.(iterateElementValue)) !== null && _transformers$current3 !== void 0 ? _transformers$current3 : emptyValue;
}
if (pointer.has(iterateElementValue, itemPath)) {
var _transformers$current4;
return (_transformers$current4 = transformers?.current?.fromExternal?.(pointer.get(iterateElementValue, itemPath))) !== null && _transformers$current4 !== void 0 ? _transformers$current4 : emptyValue;
}
}
if (data && path) {
if (path === '/') {
var _transformers$current5;
return (_transformers$current5 = transformers?.current?.fromExternal?.(data)) !== null && _transformers$current5 !== void 0 ? _transformers$current5 : emptyValue;
}
if (pointer.has(data, path)) {
var _transformers$current6;
return (_transformers$current6 = transformers?.current?.fromExternal?.(pointer.get(data, path))) !== null && _transformers$current6 !== void 0 ? _transformers$current6 : emptyValue;
}
}
return emptyValue;
}, [data, dataValue, getDataValue, getValueSnapshot, emptyValue, inIterate, itemPath, iterateElementValue, path, subscribablePath, transformers, value]);
}
//# sourceMappingURL=useExternalValue.js.map