Jquery ui draggable, drag parent div

As the title says i want to drag div parent, let's say i have this structure

<div class="parent">
  <divc class="draggable"></div>
</div>

$(".draggable").draggable();

So how can i drag .parent instead of .draggable.

And no, i don't want to make .parent draggable instead of .draggable, since it's gonna be a window which will only be draggable in one place.