can-load-file? in editor<%>

Called just before the editor is loaded from a file. If the return value is #f, the file is not loaded. See also on-load-file and after-load-file.

• (send an-editor can-load-file? filename format) -> boolean
     filename : string
     format : symbol in '(guess standard text text-force-cr same copy)

  The filename argument is the name the file will be loaded from. See load-file for information about format.