weseek__growi/apps/app/src/features/openai/chat/components/AiChatModal/ResizableTextArea.tsx

import type { ChangeEventHandler, DetailedHTMLProps, TextareaHTMLAttributes } from 'react';
import { useCallback } from 'react';

type Props = DetailedHTMLProps<TextareaHTMLAttributes<HTMLTextAreaElement>, HTMLTextAreaElement>;

export const ResizableTextarea = (props: Props): JSX.Element => {

  const { onChange: _onChange, ...rest } = props;

  const onChange: ChangeEventHandler<HTMLTextAreaElement> = useCallback((e) => {
    _onChange?.(e);

    // auto resize
    // refs: https://zenn.dev/soma3134/articles/1e2fb0eab75b2d
    e.target.style.height = 'auto';
    e.target.style.height = `${e.target.scrollHeight + 4}px`;
  }, [_onChange]);

  return (
    <textarea onChange={onChange} {...rest} />
  );
};