@carbon/ibm-products/es/components/TruncatedText/useTruncatedText.js

Carbon for IBM Products

/**
 * Copyright IBM Corp. 2020, 2025
 *
 * This source code is licensed under the Apache-2.0 license found in the
 * LICENSE file in the root directory of this source tree.
 */

import { useState, useRef, useEffect } from 'react';
import { checkHeightOverflow } from '../../global/js/utils/checkForOverflow.js';

function useTruncatedText(_ref) {
  let {
    lines,
    value,
    expanded
  } = _ref;
  const [truncated, setTruncated] = useState(false);
  const ref = useRef(null);
  useEffect(() => {
    const resizeObserver = new ResizeObserver(() => {
      if (!expanded) {
        const result = checkHeightOverflow(ref.current);
        if (result !== truncated) {
          setTruncated(result);
        }
      }
    });
    if (ref.current) {
      resizeObserver.observe(ref.current);
    }
    return () => {
      resizeObserver.disconnect();
    };
  }, [expanded, lines, value, truncated]);
  return {
    ref,
    truncated
  };
}

export { useTruncatedText as default };