Summary | Résumé

Improves the form timer by handling the case of forms with groups. If a form has groups, the delay calculation includes required questions based on the group history. The time a user spends on a form is now also included in the calculation.
This is a high risk PR since it updates forms-forms submission logic.

Test

The form timer should not display in the form-builder Preview. The form timer is only for forms-forms

Groups Form

Create a form with groups and add a few required questions. View the form you created and open the dev console. Reload the form (to restart the timer) and quickly fill in the form, counting the number of required questions. When you get to the Review page, check the console and see if the final delay makes sense.

For example, a form that has 10 required questions and has been view for 5 seconds, should have a delay of
2 + (10 - 5) * 2 = 12 seconds

Note that the countdown begins once the Review page loads. So if you linger on the Review page for e.g. 5 seconds and then click the submit button, count down delay should start at e.g. 7 seconds (with a total delay listed of 12 seconds)

Non-Groups Form

Create a form without groups and add a few required questions. Following the same steps above. The difference is the time a form is viewed is not taken into account (existing behaviour - countdown begins when the single page form is shown).