Make a new FileSorter instance.
Make a new instance with setting delegate.
set a delegate script into the instance.
Return a delegate script object of the instance.
Return a sorted list of files/folders according to the view of Finder.
The behavior of FileSorter can be costomized by passing a script object which have folloing handlers to make_with_delegate or set_delegate.
Return a folder of which view determine the sorting order.
Return a list of files and folders to be sort.
Whether items will be sorted in row wise, when the view is the icon view.