Initial ADA check: Primeface hidden checkboxes fail compatibility

[raprasad]

I ran a dataset page through the Web Accessibility Evaluation Tool

It flagged many errors (76) as well as alerts (43). I didn't examine them in depth but they're mostly related to standard HTML tagging practices for ADA -- may not be hard to fix.

The test indicated that Primefaces generates checkboxes that are not ADA compliant--they lack <label...> tags. The Primefaces checkbox HTML is described here:

• https://github.com/IQSS/dataverse-helper-scripts/blob/master/system-thoughts/issues-with-primefaces.md#example-1-primefaces-checkbox

This is a double-sided issue:

• Adding labels to the checkboxes may fix the warnings from the ADA web tool
• However, the checkbox HTML elements aren't actually visible.
  • The Primefaces checkbox substitute (a clickable icon) would need to be tested for ADA usability
  • In other words, is this an ADA checkbox?

 <div class="ui-chkbox-box ui-widget ui-corner-all ui-state-default">
    <span class="ui-chkbox-icon ui-c"></span>
    </div>