materio-base-d7/sites/all/modules/contrib/ecommerce/ubercart/uc_file/uc_file.js

/**
 * @file
 * Modifies the file selection and download access expiration interfaces.
 */

var uc_file_list = {};

/**
 * Adds files to delete to the list.
 */
function _uc_file_delete_list_populate() {
  jQuery('.affected-file-name').empty().append(uc_file_list[jQuery('#edit-recurse-directories').attr('checked')]);
}

jQuery(document).ready(
  function() {
    _uc_file_delete_list_populate();
  }
);

// When you (un)check the recursion option on the file deletion form.
Drupal.behaviors.ucFileDeleteList = {
  attach: function(context, settings) {
    jQuery('#edit-recurse-directories:not(.ucFileDeleteList-processed)', context).addClass('ucFileDeleteList-processed').change(
      function() {
        _uc_file_delete_list_populate()
      }
    );
  }
}

/**
 * Give visual feedback to the user about download numbers.
 *
 * TODO: would be to use AJAX to get the new download key and
 * insert it into the link if the user hasn't exceeded download limits.
 * I dunno if that's technically feasible though.
 */
function uc_file_update_download(id, accessed, limit) {
  if (accessed < limit || limit == -1) {

    // Handle the max download number as well.
    var downloads = '';
    downloads += accessed + 1;
    downloads += '/';
    downloads += limit == -1 ? 'Unlimited' : limit;
    jQuery('td#download-' + id).html(downloads);
    jQuery('td#download-' + id).attr("onclick", "");
  }
}