handler:edit-file in Framework Functions

• (handler:edit-file filename make-default) -> (or/c false/c (is-a?/c frame:editor<%>))
     filename : (or/c path? false/c)
     make-default = (λ () ((handler:current-create-new-window) filename)) : (-> (is-a?/c frame:editor<%>))

  This function creates a frame or re-uses an existing frame to edit a file.

  If the preference 'framework:open-here is set to #t, and (send ( group:get-the-frame-group) get-open-here-frame) returns a frame, the open-here method of that frame is used to load the file in the existing frame.

  Otherwise, it invokes the appropriate format handler to open the file (see handler:insert-format-handler).

  • If filename is a string, this function checks the result of group:get-the-frame-group to see if the filename is already open by a frame in the group.

    • If so, it returns the frame.

    • If not, this function calls handler:find-format-handler with filename.

      • If a handler is found, it is applied to filename and it's result is the final result.

      • If not, make-default is used.

  • If filename is #f, make-default is used.