interface Efl.Pack_Layout
{
   [[Low-level APIs for objects that can lay their children out.

     Used for containers like @Efl.Ui.Box and @Efl.Ui.Table.

     @since 1.23
   ]]
   c_prefix: efl_pack;
   methods {
      // Note: Do we need a layout_force or a sync flag in layout_request?
      layout_request {
         [[Requests EFL to recalculate the layout of this object.

           Internal layout methods might be called asynchronously.
         ]]
      }
      layout_update @protected {
         [[Implementation of this container's layout algorithm.

           EFL will call this function whenever the contents of this
           container need to be re-laid out on the canvas.

           This can be overridden to implement custom layout behaviors.
         ]]
      }
   }
   events {
      layout,updated: void; [[Sent after the layout was updated.]]
   }
}