Add constraint to create new term on a selected hierarchy level only

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rerolled and applied to 7.x-1.x from git

One problem, though is that there is a nagging third level eunich that cannot be set but displays. My settings to allow adding a term on the second level, and stop there. First row select shown expanded with only option "none"

[edit]

wellz I hid it with CSS .shs-select-level-3 {display:none!important}

@decibel.places: Hi ,I saw the image you have attached,have you manages to show all 3 levels from the beginning?If yes,how did you do that?
thanks

@pinkonomy do you mean how did I capture the -None- with the orange bg as the dropdown of the 3rd level?

I think I was using the Linux Shutter app. You should also be able to capture the screen on a PC with the PrtScn button. Or on Mac Apple key ⌘ + Shift + 3

Then I edited the full screen capture to the selection.

The patch is not needed since there is hook_shs_add_term_access() you may implement in a custom module to achieve this feature.

Example:

<?php
/**
 * Implements hook_shs_add_term_access().
 */
function shs_access_shs_add_term_access($vid, $parent, $account) {
  // Prevent creation of new childs of term 3 and on first level.
  if ($parent == 3 || $parent == 0) {
    return FALSE;
  }
  return TRUE;
}
?>

I agree that adding this into the system would be super awesome but the API works great once you get it all configured properly.

ALTHOUGH I would say that the last select should really be hidden if there are no results.