Provide enhanced information when uploadprogress extension is available

When uploadprogress extension is available, besides a percent, it is possible to display the following information with the progress bar.

- Elapsed time.
- Time left.
- Speed in size units per second.

It could look like this:

I have implemented this using a custom module for a project I'm working on, but maybe it could be included in filefield module, it just requires a few lines added to filefield.module.

     $status = uploadprogress_get_info($key);
     if (isset($status['bytes_uploaded']) && !empty($status['bytes_total'])) {
       $progress['message'] = t('Uploading... (@current of @total)', array('@current' => format_size($status['bytes_uploaded']), '@total' => format_size($status['bytes_total'])));
       $progress['percentage'] = round(100 * $status['bytes_uploaded'] / $status['bytes_total']);
+
+      $extra = array();
+      if (!empty($status['time_start']) && !empty($status['time_last'])) {
+        $extra[] = t('Elapsed time: @time', array('@time' => filefield_format_elapsed($status['time_last'] - $status['time_start'])));
+      }
+      if (!empty($status['est_sec'])) {
+        $extra[] = t('Time left: @time', array('@time' => filefield_format_elapsed($status['est_sec'])));
+      }
+      if (!empty($status['speed_average'])) {
+        $extra[] = t('Speed: @size/sec', array('@size' => format_size($status['speed_average'])));
+      }
+      if (!empty($extra)) {
+        $progress['message'] .= '<br />' . implode(', ', $extra);
+      }
     }

/**
 * Format elapsed time.
 */
function filefield_format_elapsed($seconds) {
  if ($seconds < 60) {
    return '00:00:' . sprintf('%02d', $seconds);
  }

  $minutes = ceil($seconds / 60);
  $seconds = $seconds % 60;
  if ($minutes < 60) {
    return '00:' . sprintf('%02d', $minutes) . ':' . sprintf('%02d', $seconds);
  }

  $hours = ceil($minutes / 60);
  $minutes = $minutes % 60;
  return sprintf('%02d', $hours) . ':' . sprintf('%02d', $minutes) . ':' . sprintf('%02d', $seconds);
}

Cheers