enableReadOnly() method does not work for checkboxes (PDFCheckBox)

[GarikEachbase]

What were you trying to do?

I am trying to set fields as read only not to allow users chage it. field.enableReadOnly(). For PDFTextField fields it works fine, but for PDFCheckBox-es it does not work.

How did you attempt to do it?

const form = pdfDoc.getForm();
const fields = form.getFields();
fields.forEach((f) => f.enableReadOnly());

What actually happened?

For PDFTextField fields it works fine, but for PDFCheckBox-es it does not work.

What did you expect to happen?

I expect that user can't change checkboxes value but user can check and uncheck each checkbox

How can we reproduce the issue?

async fillFormFields(formData: Record<string, string | string[]>) {
const filePath = path.join(__dirname, 'templates', 'CMS1500.pdf');
const pdfBuffer = fs.readFileSync(filePath);
const pdfDoc = await PDFDocument.load(pdfBuffer);
const form = pdfDoc.getForm();
const fields = form.getFields();
// Apply permissions to make the document read-only
CMS1500(6).pdf

fields.forEach((f) => f.enableReadOnly());
for (const fieldName of Object.keys(formData)) {
  const field = fields.find((f) => f.getName() === fieldName);
  if (field) {
    let fieldValue = formData[fieldName];
    if (field instanceof PDFTextField) {
      if (!fieldValue) fieldValue = ' ';
      field.setText(fieldValue as string);
    } else if (field instanceof PDFCheckBox) {
      const isChecked = Boolean(fieldValue);
      if (isChecked) {
        field.check();
      } else {
        field.uncheck();
      }
      console.log(field);
    }
  }
}
const modifiedPdfBytes = await pdfDoc.save();
fs.writeFileSync(filePath, modifiedPdfBytes);

}

Version

1.17.1

What environment are you running pdf-lib in?

Node

Checklist

• My report includes a Short, Self Contained, Correct (Compilable) Example.
• I have attached all PDFs, images, and other files needed to run my SSCCE.

Additional Notes

No response

[GarikEachbase]

1500Form (16).pdf

[CostGranda]

Try doing the readonly after setting the value, and you can print if the checkbox has been marked as dirty, otherwise mark it