Node reference, using the advance view option, arguments are too limited

My scenario is :

Content type
Story (has a node_reference field, type Photo) | Photo (has a image cck field)

When editing a story, I'd like the node reference to be able to choose a photo which owned by the same author of the story.

So I create a view, photo_reference, which basically takes an argument: uid, and has one field: title.

But when I set the node_reference setting it's not possible to make the uid argument be passed dynamically.

It seems that you can only pass a defined argument to the view, and not able to use the view's default argument.
In my case I actually write a PHP default argument in the view, but it's never called, so I have to impelement hook_views_pre_view to set the argument.

// hook_views_pre_view
function hook_views_pre_view(&$view, $display_id = 'default', $args = array()) {
  if ($view->name == 'photo_reference' && !$args) {
    // set the default arguments to be the node's author, 
    // then the photo_reference can get the photos owned by this user, 
    // and put them in the node reference selecton
    $nid = 0;
    $path = explode('/', $_GET['q']);
    if(sizeof($path) == 3 && $path[0] == 'node' && is_numeric($path[1]) && $path[2] == 'edit' ) {
      $nid = $path[1];
    }
    if ($nid) { // get node from url
      $node = node_load($nid);
      $uid = $node->uid;
    }
    else{ // may be new node, use the logged user id
      global $user;
      $uid = $user->uid;
    }
    $view->set_arguments(array($uid));
  }
}

The above code is basically ok to fit in a views default argument. If the node_reference can load default argument when the argument field is empty, it will be great.