emacs/lisp/calendar/todo-mode.el
Oliver Seidel a360be793e Incorporated menus for XEmacs from Allan.Cochrane@soton.sc.philips.com,
fixed TYPO, fixed todo-file-cmd, cleaned up rcs history.
1997-08-05 16:47:01 +00:00

424 lines
13 KiB
EmacsLisp

; todomode.el -- major mode for editing TODO list files
;; ---------------------------------------------------------------------------
;; Note: You may copy this file freely for non-commercial use; otherwise,
;; please contact (address) O Seidel, Lessingstr 8, Eschborn, FRG
;; (e-mail ) Oliver.Seidel@cl.cam.ac.uk (2 Aug 1997)
;; $Id: todomode.el,v 1.5 1997/08/05 14:43:39 os10000 Exp os10000 $
;;
;; $Log: todomode.el,v $
;; Revision 1.5 1997/08/05 14:43:39 os10000
;; Added improvements from Ron Gut <rgut@aware.com>.
;; Added category management.
;;
;; Revision 1.4 1997/08/04 16:18:45 os10000
;; Added Raise/Lower item.
;;
;; Revision 1.3 1997/08/03 12:47:26 os10000
;; Cleaned up variables, prefix and cursor position.
;;
;; Revision 1.2 1997/08/03 12:15:28 os10000
;; It appears to work.
;;
;; Revision 1.1 1997/08/03 12:15:13 os10000
;; Initial revision
;;
;; ---------------------------------------------------------------------------
;; Description:
;;
;; To get this to work, make emacs execute the line "(require 'todomode)"
;; and maybe initialise the variables below on startup.
;;
;; Just for the case that you are wondering about the ugly name of this
;; package: I am one of those unfortunate people who have DOS, LINUX and
;; OS/2 on one of their computers, so part of my home-filespace is shared
;; and stored on a DOS partition, which is accessible to all systems. If
;; you wish, you can of course rename the name of the file (and the last
;; command) to something more aisthetically (please don't argue about
;; this spelling ...) pleasing, like i.e. todo-mode.
;;
;; You will have the following facilities available:
;;
;; M-x todo-mode will enter the todo list screen, here type
;; + to go to next category
;; - to go to previous category
;; e to edit the current entry
;; f to file the current entry, including a
;; comment and timestamp
;; i to insert a new entry
;; k to kill the current entry
;; l lower the current entry's priority
;; n for the next entry
;; p for the previous entry
;; q to save the list and exit the buffer
;; r raise current entryk's priority
;; s to save the list
;;
;; When you add a new entry, you are asked for the text and then for the
;; category. I for example have categories for things that I want to do
;; in the office (like mail my mum), that I want to do in town (like buy
;; cornflakes) and things I want to do at home (move my suitcases). The
;; categories can be selected with the cursor keys and if you type in the
;; name of a category which didn't exist before, an empty category of the
;; desired name will be added.
;;
;; I would recommend to add the following bindings to your global keymap:
;;
;; (global-set-key "\C-ct" 'todo-show)
;; (global-set-key "\C-ci" 'todo-cmd-inst)
;;
;; This will enable you to quickly find the todo-list, or to simply add an
;; entry, without changing to it and getting sidetracked from your current
;; project.
;;
;; I would also recommend that use the prefix "*/*" (by leaving the
;; variable 'todo-prefix' untouched) so that the diary displays
;; each entry every day.
;;
;; For this, please read the documentation that goes with the calendar
;; since that will tell you how you can set up the fancy diary display
;; and use the #include command to include your todo list file as part
;; of your diary.
;;
;; Enjoy this package and express your gratitude by sending valuables
;; to my parents' address as listed above!!!
;;
;; Oliver Seidel
;; ---------------------------------------------------------------------------
;; User-configurable variables:
(defvar todo-prefix "*/*" "TODO mode prefix when creating entries")
(defvar todo-file-do "~/.todo-do" "TODO mode filename of list file")
(defvar todo-file-done "~/.todo-done" "TODO mode filename of archive file")
(defvar todo-mode-hook nil "Hooks invoked when the *TODO* buffer is created.")
;; ---------------------------------------------------------------------------
(require 'time-stamp)
(defvar todo-mode-map (make-sparse-keymap) "TODO mode keymap. See `todo-mode'")
(define-key todo-mode-map "+" 'todo-cmd-forw)
(define-key todo-mode-map "-" 'todo-cmd-back)
(define-key todo-mode-map "e" 'todo-cmd-edit)
(define-key todo-mode-map "f" 'todo-cmd-file)
(define-key todo-mode-map "i" 'todo-cmd-inst)
(define-key todo-mode-map "k" 'todo-cmd-kill)
(define-key todo-mode-map "l" 'todo-cmd-lowr)
(define-key todo-mode-map "n" 'todo-cmd-next)
(define-key todo-mode-map "p" 'todo-cmd-prev)
(define-key todo-mode-map "q" 'todo-cmd-done)
(define-key todo-mode-map "r" 'todo-cmd-rais)
(define-key todo-mode-map "s" 'todo-cmd-save)
(defun todo-cat-slct ()
(let ((todo-category-name (nth todo-category-number todo-cats)))
(setq mode-line-buffer-identification (concat "Category: " todo-category-name))
(widen)
(goto-char (point-min))
(search-forward (concat "--- " todo-category-name))
(setq begin (+ (point-at-eol) 1))
(search-forward "--- End")
(narrow-to-region begin (point-at-bol))
(goto-char (point-min))
)
)
(defun todo-cmd-forw () "Go forward to TODO list of next category."
(interactive)
(let ((todo-cat-cnt (- (length todo-cats) 1)))
(setq todo-category-number (if (< todo-category-number todo-cat-cnt)
(+ todo-category-number 1) 0))
(todo-cat-slct)
)
)
(defun todo-cmd-back () "Go back to TODO list of previous category."
(interactive)
(let ((todo-cat-cnt (- (length todo-cats) 1)))
(setq todo-category-number (if (> todo-category-number 0)
(- todo-category-number 1) todo-cat-cnt))
(todo-cat-slct)
)
)
(defun todo-cmd-prev () "Select previous entry of TODO list."
(interactive)
(forward-line -1)
(beginning-of-line nil)
(message "")
)
(defun todo-cmd-next () "Select next entry of TODO list."
(interactive)
(forward-line 1)
(beginning-of-line nil)
(message "")
)
(defun todo-cmd-save () "Save the TODO list."
(interactive)
(save-buffer)
)
(defun todo-cmd-done () "Done with TODO list for now."
(interactive)
(widen)
(save-buffer)
(beginning-of-line nil)
(message "")
(bury-buffer)
)
(defun todo-line () "Find current line in buffer." (buffer-substring (point-at-bol) (point-at-eol)))
(defun todo-cmd-edit () "Edit current TODO list entry."
(interactive)
(let ((todo-entry (todo-line)))
(delete-region (point-at-bol) (point-at-eol))
(insert (read-from-minibuffer "Edit: " todo-entry))
(beginning-of-line nil)
(message "")
)
)
(defvar todo-prv-lne 0 "previous line that I asked about.")
(defvar todo-prv-ans 0 "previous answer that I got.")
(defun todo-ask (lne) "Ask whether entry is more important than at LNE."
(if (not (equal todo-prv-lne lne))
(progn
(setq todo-prv-lne lne)
(goto-line todo-prv-lne)
(setq todo-prv-ans (y-or-n-p (concat "More important than '" (todo-line) "'? ")))
)
)
todo-prv-ans
)
(defun todo-add-category (cat) "Add a new category to the TODO list."
(interactive)
(save-window-excursion
(setq todo-cats (cons cat todo-cats))
(find-file todo-file-do)
(widen)
(goto-char (point-min))
(let ((posn (search-forward "-*- mode: todo; " 17 t)))
(if (not (null posn)) (goto-char posn))
(if (equal posn nil) (progn (insert "-*- mode: todo; \n") (forward-char -1)) (kill-line))
)
(insert (format "todo-cats: %S; -*-" todo-cats))
(forward-char 1)
(insert (format "%s --- %s\n--- End\n%s %s\n" todo-prefix cat todo-prefix (make-string 75 ?-)))
)
0
)
(defun todo-cmd-inst () "Insert new TODO list entry."
(interactive)
(beginning-of-line nil)
(let* ((todo-entry (concat todo-prefix " " (read-from-minibuffer "New TODO entry: ")))
(temp-catgs todo-cats)
(todo-hstry (cons 'temp-catgs (+ todo-category-number 1))))
(save-window-excursion
(setq todo-category
(read-from-minibuffer "Category: " (nth todo-category-number todo-cats) nil nil todo-hstry))
(let* ((ltrgt todo-category)
(lnmbr 0)
(ltext (car todo-cats))
(lrest (cdr todo-cats)))
(setq ltext (car todo-cats))
(while (not (or (null lrest) (string-equal ltext ltrgt)))
(setq ltext (car lrest))
(setq lrest (cdr lrest))
(setq lnmbr (+ 1 lnmbr))
)
(setq todo-category-number
(if (string-equal ltext todo-category) lnmbr (todo-add-category todo-category)))
)
(todo-show)
(setq todo-prv-lne 0)
(let* ((todo-fst 1)
(todo-lst (+ 1 (count-lines (point-min) (point-max)))))
(while (< todo-fst todo-lst)
(let* ((todo-cur (/ (+ todo-fst todo-lst) 2))
(todo-ans (if (< todo-cur todo-lst) (todo-ask todo-cur) nil)))
(if todo-ans
(setq todo-lst todo-cur)
(setq todo-fst (+ todo-cur 1)))
)
)
(goto-line todo-fst)
)
(insert (concat todo-entry "\n"))
(forward-line -1)
)
(beginning-of-line nil)
(message "")
)
)
(defun todo-cmd-kill () "Delete current TODO list entry."
(interactive)
(if (> (count-lines (point-min) (point-max)) 0)
(progn
(let* ((todo-entry (todo-line))
(todo-answer (y-or-n-p (concat "Permanently remove '" todo-entry "'? "))))
(if todo-answer
(progn
(delete-region (point-at-bol) (+ 1 (point-at-eol)))
(forward-line -1)
)
)
)
(message "")
)
(message "No TODO list entry to delete.")
)
(beginning-of-line nil)
)
(defun todo-cmd-rais () "Raise priority of current entry."
(interactive)
(if (> (count-lines (point-min) (point-max)) 0)
(progn
(setq todo-entry (todo-line))
(delete-region (point-at-bol) (+ 1 (point-at-eol)))
(forward-line -1)
(insert (concat todo-entry "\n"))
(forward-line -1)
(message "")
)
(message "No TODO list entry to raise.")
)
(beginning-of-line nil)
)
(defun todo-cmd-lowr () "Lower priority of current entry."
(interactive)
(if (> (count-lines (point-min) (point-max)) 0)
(progn
(setq todo-entry (todo-line))
(delete-region (point-at-bol) (+ 1 (point-at-eol)))
(forward-line 1)
(insert (concat todo-entry "\n"))
(forward-line -1)
(message "")
)
(message "No TODO list entry to raise.")
)
(beginning-of-line nil)
)
(defun todo-cmd-file () "File away the current TODO list entry."
(interactive)
(if (> (count-lines (point-min) (point-max)) 0)
(progn
(let ((time-stamp-format "%3b %2d, %y, %02I:%02M%p"))
(beginning-of-line nil)
(delete-region (point-at-bol) (search-forward todo-prefix))
(insert (time-stamp-string))
(end-of-line nil)
(insert (concat " (" (read-from-minibuffer "Comment: ") ")"))
(append-to-file (point-at-bol) (+ 1 (point-at-eol)) todo-file-done)
(delete-region (point-at-bol) (+ 1 (point-at-eol)))
(forward-line -1)
)
(message "")
)
(message "No TODO list entry to delete.")
)
(beginning-of-line nil)
)
;; ---------------------------------------------------------------------------
;; utility functions: These are available in XEmacs, but not in Emacs 19.34
(if (not (fboundp 'point-at-bol))
(defun point-at-bol ()
(save-excursion
(beginning-of-line)
(point))))
(if (not (fboundp 'point-at-eol))
(defun point-at-eol ()
(save-excursion
(end-of-line)
(point))))
;; ---------------------------------------------------------------------------
(defvar todo-mode-popup-menu
(purecopy '("Todo Mode Menu"
["Forward item" todo-cmd-forw t]
["Backward item" todo-cmd-back t]
"---"
["Edit item" todo-cmd-edit t]
["File item" todo-cmd-file t]
["Insert new item" todo-cmd-inst t]
["Kill item" todo-cmd-kill t]
"---"
["Lower item priority" todo-cmd-lowr t]
["Raise item priority" todo-cmd-rais t]
"---"
["Next item" todo-cmd-next t]
["Previous item" todo-cmd-prev t]
"---"
["Save" todo-cmd-save t]
"---"
["Quit" todo-cmd-done t]
)
)
)
(defvar todo-cats nil "TODO categories.")
(defvar todo-category-number 0 "TODO category number.")
(defun todo-mode () "Major mode for editing TODO lists.\n\n\\{todo-mode-map}"
(interactive)
(setq major-mode 'todo-mode)
(setq mode-name "TODO")
(use-local-map todo-mode-map)
(setq mode-popup-menu todo-mode-popup-menu)
(run-hooks 'todo-mode-hook)
)
(defun todo-show () "Show TODO list."
(interactive)
(find-file todo-file-do)
(if (null todo-cats)
(progn
(todo-add-category "Todo")
(goto-char (point-min))
(goto-char (search-forward "--- End"))
(let ((bol (point-at-bol)))
(forward-line 1)
(let* ((eol (+ (point-at-eol) 1))
(mrkr (buffer-substring bol eol)))
(delete-region bol eol)
(goto-char (point-max))
(insert mrkr)
)
)
(save-buffer)
(kill-buffer (current-buffer))
(find-file todo-file-do)
)
)
(beginning-of-line nil)
(todo-cat-slct)
)
(provide 'todomode)
;; ---------------------------------------------------------------------------
;; todomode.el ends here
;; ---------------------------------------------------------------------------