;; spreadsheet in S
;; Richard M. Heiberger
;; 1995

;; Load this file from the dired window in which .Data exists.
;; This file does not work with S-mode.  Use S-spread.el for S-mode.


(set-variable 'buffers-menu-max-size nil)


(defvar spread-directory (concat "/tmp/" (make-temp-name "spr"))
  "Directory in which to store ascii spreadsheet displays.")

(defvar spread-command-file (concat spread-directory "/*command*")
  "File through which S will communicate with emacs.")

(defvar spread-directory-p nil
  "predicate value non-nil when directory has been defined.")

(defun print-find-emacs nil "display spread.frame from minibuffer" (interactive)
  (spread-print-find (read-string "spread.frame: ") t))

(define-key global-map "\C-cr" 'print-find-emacs)



(defun emacs-rc nil "" (interactive)
  (emacs-cell "1")
)

(defun emacs-macro nil "" (interactive)
  (emacs-cell "2")
)

(defun emacs-macro-control-text nil "" (interactive)
  (emacs-cell "4")
)

(defun emacs-macro-print-text nil "" (interactive)
  (emacs-cell "5")
)

(defun emacs-cell (result-type) "" (interactive)
 (setq spread-name (buffer-name))
 (setq r (count-lines 1 (point)))
 (setq c (current-column))
 (set-buffer S-buffer)
 (spread-insert
  (format "emacs.cell('%s', %s, %s, %s)"
	  spread-name r c result-type 
  )
 )
 (save-excursion
   (set-buffer "*command*")
   (revert-t-t)
   (goto-char (point-min))
   (setq beg (point)) (end-of-line)
   (if (equal result-type "4")
       (progn
	 (setq command (buffer-substring beg (point)))
         (set-buffer S-buffer)
	 (spread-insert command)
       ) 
     (setq command (read-string "> " (buffer-substring beg (point))))
     (set-buffer S-buffer)
     (spread-insert command)
     (spread-insert "invisible(assign(.Active, x))")
     (spread-print-find spread-name nil)
     (goto-line r)(forward-char c)
 ))
)

(defun spread-insert (spread-command) "" (interactive)
  (goto-char (point-max))
  (insert spread-command)
  (comint-send-input)
  (accept-process-output spread-process)
)

(defun revert-t-t nil "revert-buffer with no questions asked"
  (interactive)
  (revert-buffer t t)
)

(defun revert-t-t-read-only nil "revert-buffer, no questions, read-only"
  (interactive)
  (revert-buffer t t)
  (setq buffer-read-only t)
)

(define-key global-map "\C-cv" 'revert-t-t)

(defvar spread-mode-map nil "Keymap for Spread mode.")
(if spread-mode-map
    nil
  (setq spread-mode-map (make-sparse-keymap))
  (define-key spread-mode-map "\C-cv" 'revert-t-t-read-only)
  (define-key spread-mode-map "\C-m" 'emacs-rc)
  (define-key spread-mode-map "\C-cc" 'emacs-macro)
  (define-key spread-mode-map "\C-cs" 'emacs-macro-control-text)
  (define-key spread-mode-map "\C-cp" 'emacs-macro-print-text)
  (define-key spread-mode-map "f" 'emacs-print-find-emacs)

  (define-key spread-mode-map [mouse-2] 'spread-mouse-print-find-emacs)
  (define-key spread-mode-map [mouse-3] 'spread-mouse-rc)
;;  (define-key spread-mode-map [double-mouse-1] 'spread-mouse-rc) ;doesn't work

  (define-key spread-mode-map [menu-bar spread]
    (cons "Spread" (make-sparse-keymap "Spread")))
;  (define-key spread-mode-map [menu-bar spread spread-macro]
;    '("macro" . spread-macro))
  (define-key spread-mode-map [menu-bar spread spread-before]
    '("before" . spread-before))
  (define-key spread-mode-map [menu-bar spread spread-after]
    '("after" . spread-after))
  (define-key spread-mode-map [menu-bar spread spread-macro]
    (cons "Macro" (make-sparse-keymap "sprdtwo")))
  (define-key spread-mode-map [menu-bar spread spread-macro display]
    '("after" . spread-display))
;  (define-key spread-mode-map [mouse-2] 'emacs-menu-print-find-ww)
)

(defun spread-mouse-rc (event) "move point then enter"
  (interactive "e")
  (mouse-set-point event)
  (emacs-rc)
)

(defun spread-mouse-print-find-emacs (event) "move point then find file"
  (interactive "e")
  (mouse-set-point event)
  (emacs-print-find-emacs)
)

(defun spread-mode () "Major mode for spreadsheets.\\{spread-mode-map}"
  (interactive)
  (kill-all-local-variables)
  (make-local-variable 'beg)
  (make-local-variable 'command)
  (use-local-map spread-mode-map)
  (setq mode-name "Spread")
  (setq major-mode 'spread-mode)
  (if (equal (buffer-name) ".Registry") (spread-highlight-macro))
  (setq buffer-read-only t)
)


;; from dired.el L547
;	  (put-text-property (point)
;			     (save-excursion
;			       (dired-move-to-end-of-filename)
;			       (point))
;			     'mouse-face 'highlight)
;
;; (put-text-property (point) (mark) 'mouse-face 'highlight)


(defun spread-highlight-macro nil
 "highlight spread.frame names for mouse access"
 (interactive)
 (save-excursion
   (goto-char (point-min))
   (search-forward "**macro**")(forward-char)
   
   (toggle-read-only -1)
   (while (progn
	    (setq beg (point))(end-of-line)
	    (not (= beg (point)))
	   )
     (put-text-property beg (1-(point)) 'mouse-face 'highlight)
     (forward-char)
   )
   (toggle-read-only 1)
 )
 (save-buffer)
)

(defun emacs-print-find-emacs nil "" (interactive)
  (beginning-of-line)
  (setq beg (point)) (end-of-line) (backward-char)
  (setq spread-name (buffer-substring beg (point)))
  (spread-print-find spread-name nil)
)




(defun find-spread-frame-directory nil 
"Locate directory in which spread.frame functions are stored."
  (list-command-history)
  (set-buffer "*Command History*")
  (goto-char (point-min))
  (search-forward "(load-file ")
  (goto-char (1+ (match-end 0)))(setq beg (point))
  (end-of-line)(search-backward "/")
  (goto-char (match-end 0))
  (setq spread-frame-directory
	(expand-file-name (buffer-substring beg (point))))
)

(defun inferior-spread-mode ()
"Major mode for running spread.frames under S/Splus."
  (comint-run S-program)
  (setq comint-prompt-regexp shell-prompt-pattern)
  (setq major-mode 'inferior-spread-mode)
  (setq mode-name "Inferior Spread")
  (setq mode-line-process '(":%s"))
  (setq spread-process (get-buffer-process (current-buffer)))
  (set-process-filter spread-process 'comint-output-filter)
  (set-variable 'comint-output-filter-functions
    '(spread-output-filter
      comint-postoutput-scroll-to-bottom)
    )
  (set-variable 'comint-scroll-to-bottom-on-output "this")
  (set-variable 'comint-scroll-show-maximum-output t)
  (if (not(file-writable-p ".Data/.Audit")) 
      (accept-process-output spread-process))
  (accept-process-output spread-process) 
)


(defun spread-output-filter (str)
"detect errors in S output"
  (if (or
       (string-match "Dumped" str)
       (string-match "Error" str)
      )
      (progn
	(switch-to-buffer-other-window S-buffer)
	(comint-show-maximum-output)
	(set-variable 'quit-flag t); beeps and writes "quit" in the message area
      )
  )
)




;(put 'spread-region 'menu-enable 'mark-active)
;(put 'spread-validate-region 'menu-enable 'mark-active)
;(put 'spread-print 'menu-enable '(stringp spread-print-file))
;(put 'spread-alt-print 'menu-enable '(stringp spread-print-file))
;(put 'spread-view 'menu-enable '(stringp spread-print-file))
;(put 'spread-recenter-output-buffer 'menu-enable '(get-buffer "*spread-shell*"))
;(put 'spread-kill-job 'menu-enable '(spread-shell-running))



(defun emacs-menu-print-find (spread-name) "" (interactive)
  (spread-print-find spread-name nil)
)

(defun spread-print-find (spread-name update-Registry)
  "Place SPREAD-NAME in foreground of S-buffer (*S* or *Splus*),
update .Registry and revert buffer when UPDATE-REGISTRY is t,
print all views of spread.frame associated with SPREAD-NAME in .Registry
to /tmp/spr***** directory, and find or revert all views into emacs buffers."
  (interactive)
  (set-buffer S-buffer)
  (spread-insert
   (format "print.find.emacs('%s', update.Registry=%s)"
    spread-name (if update-Registry "T" "F")))
  (if update-Registry
      (save-excursion (spread-find-file ".Registry")))
  (spread-print-sprds)
  (switch-to-buffer spread-name)
)

(defun spread-print-sprds () "Display in buffers all views of spread.frame"
 (interactive)
 (save-excursion
   (set-buffer "*command*")
   (revert-t-t)
   (goto-char (point-min))

   (while (< (point) (point-max))
     (set-buffer "*command*")
     (setq beg (point)) (end-of-line)
     (setq spread-name-i (buffer-substring beg (point)))
     (save-excursion (spread-find-file spread-name-i))
     (forward-line))) 
)

(defun spread-find-file (spread-name) "Display one view of spread.frame"
  (interactive)
  (switch-to-buffer spread-name)
  (if (buffer-file-name)
      (revert-t-t-read-only)
    (kill-buffer spread-name)
    (find-file (concat spread-directory "/" spread-name))
  )
  (spread-mode)
)

(define-key spread-mode-map [menu-bar spread ww]
  '("ww" . emacs-menu-print-find-ww))

(defun emacs-menu-print-find-ww () "" (interactive)
  (emacs-menu-print-find "ww"))

(define-key spread-mode-map [menu-bar spread ww2]
  '("ww2" . "\e\e (emacs-menu-print-find \"ww\")"))

(define-key spread-mode-map [menu-bar spread ww3]
  '("ww3" . "\M-x eval-expression\C-m (emacs-menu-print-find \"ww\")"))




(defun spread-start () "load emacs spread.frame handler"
  (if (not (equal major-mode 'dired-mode)) (set-variable 'quit-flag t))
  (setq spread-home-directory (dired-current-directory))
  (find-spread-frame-directory)
  (kill-buffer "*Command History*")
  (if (not spread-directory-p) 
      (progn (make-directory spread-directory)
	     (setq spread-directory-p t)))
  (setq S-program (read-string "Splus or S? " "Splus"))
  (setq S-buffer (concat "*" S-program "*"))
  (if (not (get-buffer S-buffer))
	(get-buffer-create S-buffer))
  (if (get-buffer-process S-buffer) (set-variable 'quit-flag t))
  (set-buffer S-buffer)
  (cd spread-home-directory)
  (inferior-spread-mode)
  (spread-insert
   (format "attach('%s.Data')" spread-frame-directory))
  (spread-insert 
   (format "emacs.start('%s')" spread-directory))
  (find-file spread-command-file)
  (spread-find-file ".Registry")
)

;; start it up
(spread-start)