(require 'slime)
(require 'slime-repl)

(define-slime-contrib slime-banner
  "Persistent header line and startup animation."
  (:authors "Helmut Eller <heller@common-lisp.net>"
            "Luke Gorrie  <luke@synap.se>")
  (:license "GPL")
  (:on-load   (setq slime-repl-banner-function 'slime-startup-message))
  (:on-unload (setq slime-repl-banner-function 'slime-repl-insert-banner)))

(defcustom slime-startup-animation (fboundp 'animate-string)
   "Enable the startup animation."
   :type '(choice (const :tag "Enable" t) (const :tag "Disable" nil))
   :group 'slime-ui)

(defcustom slime-header-line-p (boundp 'header-line-format)
  "If non-nil, display a header line in Slime buffers."
  :type 'boolean
  :group 'slime-repl)

(defun slime-startup-message ()
  (when slime-header-line-p
    (setq header-line-format 
          (format "%s  Port: %s  Pid: %s"
                  (slime-lisp-implementation-type)
                  (slime-connection-port (slime-connection))
                  (slime-pid))))
  (when (zerop (buffer-size))
    (let ((welcome (concat "; SLIME " (or (slime-changelog-date) 
                                          "- ChangeLog file not found"))))
      (if slime-startup-animation
          (animate-string welcome 0 0) 
        (insert welcome)))))

(provide 'slime-banner)
