@rc-component/cascader/es/hooks/useSelect.js

cascade select ui component for react

import { conductCheck } from "@rc-component/tree/es/utils/conductUtil";
import { toPathKey, toPathKeys } from "../utils/commonUtil";
import { formatStrategyValues } from "../utils/treeUtil";
export default function useSelect(multiple, triggerChange, checkedValues, halfCheckedValues, missingCheckedValues, getPathKeyEntities, getValueByKeyPath, showCheckedStrategy) {
  return valuePath => {
    if (!multiple) {
      triggerChange(valuePath);
    } else {
      // Prepare conduct required info
      const pathKey = toPathKey(valuePath);
      const checkedPathKeys = toPathKeys(checkedValues);
      const halfCheckedPathKeys = toPathKeys(halfCheckedValues);
      const existInChecked = checkedPathKeys.includes(pathKey);
      const existInMissing = missingCheckedValues.some(valueCells => toPathKey(valueCells) === pathKey);

      // Do update
      let nextCheckedValues = checkedValues;
      let nextMissingValues = missingCheckedValues;
      if (existInMissing && !existInChecked) {
        // Missing value only do filter
        nextMissingValues = missingCheckedValues.filter(valueCells => toPathKey(valueCells) !== pathKey);
      } else {
        // Update checked key first
        const nextRawCheckedKeys = existInChecked ? checkedPathKeys.filter(key => key !== pathKey) : [...checkedPathKeys, pathKey];
        const pathKeyEntities = getPathKeyEntities();

        // Conduction by selected or not
        let checkedKeys;
        if (existInChecked) {
          ({
            checkedKeys
          } = conductCheck(nextRawCheckedKeys, {
            checked: false,
            halfCheckedKeys: halfCheckedPathKeys
          }, pathKeyEntities));
        } else {
          ({
            checkedKeys
          } = conductCheck(nextRawCheckedKeys, true, pathKeyEntities));
        }

        // Roll up to parent level keys
        const deDuplicatedKeys = formatStrategyValues(checkedKeys, getPathKeyEntities, showCheckedStrategy);
        nextCheckedValues = getValueByKeyPath(deDuplicatedKeys);
      }
      triggerChange([...nextMissingValues, ...nextCheckedValues]);
    }
  };
}