Categories Dressing

[gjh42]

What you want is a combination of cases 2,3 and 5:

      case 2://active only (all tops when no cat selected)
        if($cPath_top != $path_top and $cPath_top != 0) $skip_cat = 1;
        break;
      case 3://full active tree, others per level
        if($cPath_top != $path_top) $test_level = 1;
        break;

      case 5:// show active, no top, per levels
        if ($cat_depth == 0 or $cPath_top != $path_top) {
          $skip_cat = 1;
        }else{
          $test_level = 1;
        } 

Something like this:

      case 6://full active tree, per levels (only all tops when no cat selected)
        if($cPath_top != $path_top and $cPath_top != 0) $skip_cat = 1;//skip all non-active tree
        if($cPath_top == 0 and $cat_depth != 0) $skip_cat = 1;//skip all subcats when none active
        if($cPath_top == $path_top and $cPath_top != 0) $test_level = 1;//show active tree per level settings
        break; 

Then use 6|1|3 for your define.
This allows your specific layout desire as well as many other variations of it.