arduino-ide/arduino-ide-extension/src/browser/dialogs/certificate-uploader/certificate-add-new.tsx

import { nls } from '@theia/core/lib/common';
import * as React from '@theia/core/shared/react';

export const CertificateAddComponent = ({
  addCertificate,
}: {
  addCertificate: (cert: string) => void;
}): React.ReactElement => {
  const [value, setValue] = React.useState('');

  const handleChange = React.useCallback(
    (event: React.ChangeEvent<HTMLInputElement>) => {
      setValue(event.target.value);
    },
    []
  );

  return (
    <form
      className="certificate-add"
      onSubmit={(event) => {
        event.preventDefault();
        event.stopPropagation();
        addCertificate(value);
        setValue('');
      }}
    >
      <label>
        <div>
          {nls.localize(
            'arduino/certificate/addURL',
            'Add URL to fetch SSL certificate'
          )}
        </div>
        <input
          className="theia-input"
          placeholder={nls.localize(
            'arduino/certificate/enterURL',
            'Enter URL'
          )}
          type="text"
          name="add"
          onChange={handleChange}
          value={value}
        />
      </label>
    </form>
  );
};