get-file in editor<%>

Called when the user must be queried for a filename to load an editor. A starting directory string is passed in, but is may be #f to indicate that any directory is fine.

• (send an-editor get-file directory) -> string or #f
   directory : string or #f

  Calls the global get-fileprocedure.

  If the editor is displayed in a single canvas, then the canvas's top-level frame is used as the parent for the file dialog. Otherwise, the file dialog will have no parent.