Added improvements from Ron Gut <rgut@aware.com>.

Added category management.

1 files changed, 212 insertions, 91 deletions

diff --git a/lisp/calendar/todo-mode.el b/lisp/calendar/todo-mode.el
index 4fedb4e4ac8..fb5049c6008 100644
--- a/lisp/calendar/todo-mode.el
+++ b/lisp/calendar/todo-mode.el
@@ -1,4 +1,4 @@
-;; todomode.el -- major mode for editing Todo-List files
+; todomode.el -- major mode for editing TODO list files
 
 ;; ---------------------------------------------------------------------------
 
@@ -6,9 +6,12 @@
 ;;       please contact   (address) O Seidel, Lessingstr 8, Eschborn, FRG
 ;;                        (e-mail ) Oliver.Seidel@cl.cam.ac.uk (2 Aug 1997)
 
-;; $Id: todomode.el,v 1.3 1997/08/03 12:47:26 os10000 Exp os10000 $
+;; $Id: todomode.el,v 1.4 1997/08/04 16:18:45 os10000 Exp os10000 $
 ;;
 ;; $Log: todomode.el,v $
+;; 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.
 ;;
@@ -29,38 +32,38 @@
 ;; Then you have the following facilities available:
 ;;
 ;; M-x todo-mode              will enter the todo list screen, here type
-;; p                          for the previous entry
-;; n                          for the next entry
-;; q                          to save the list and exit the buffer
+;; +                          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
-;; r                          raise current entryk's priority
 ;; l                          lower the current entry's priority
-;; f                          to file the current entry, including a
-;;                            comment and timestamp
+;; 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
 ;;
 ;; I would recommend to add the following bindings to your global keymap:
 ;;
-;; (global-set-key "\C-ct" 'todo-mode)
+;; (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 you execute the command
-;;
-;; (setq todo-prefix "*/* ")
-;;
-;; to have all your entries prefixed in such a way that the diary displays
-;; them every day.
+;; I would also recommend that use the prefix "*/*" (by leaving the
+;; variable 'todo-prefix' untouched) so that the diary displays
+;; each entry every day.
 
 ;; ---------------------------------------------------------------------------
 
 ;; User-configurable variables:
 
-(defvar todo-prefix "" "TODO mode prefix when creating entries")
+(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.")
@@ -69,63 +72,96 @@
 
 (require 'time-stamp)
 
-(defvar todo-begin (point-min) "TODO mode beginning of line")
-(defvar todo-end   (point-min) "TODO mode end of line")
-
-(setq todo-mode-map (make-keymap))
-(suppress-keymap todo-mode-map)
-(define-key todo-mode-map "p" 'todo-cmd-prev)
-(define-key todo-mode-map "n" 'todo-cmd-next)
-(define-key todo-mode-map "q" 'todo-cmd-done)
+(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 "r" 'todo-cmd-rais)
 (define-key todo-mode-map "l" 'todo-cmd-lowr)
-(define-key todo-mode-map "f" 'todo-cmd-file)
+(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-cmd-prev () "Select previous entry."
+(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."
+(defun todo-cmd-next () "Select next entry of TODO list."
   (interactive)
   (forward-line 1)
   (beginning-of-line nil)
   (message "")
   )
 
-(defun todo-cmd-done () "Done with todo list for now."
+(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 "")
-  (save-buffer)
   (bury-buffer)
   )
 
-(defun todo-line () "Find current line in buffer."
-  (end-of-line nil)       (setq todo-end (point))
-  (beginning-of-line nil) (setq todo-begin (point))
-  (buffer-substring todo-begin todo-end)
-  )
+(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."
+(defun todo-cmd-edit () "Edit current TODO list entry."
   (interactive)
-  (setq todo-entry (todo-line))
-  (delete-region todo-begin todo-end)
-  (insert (read-from-minibuffer "Edit: " todo-entry))
-  (beginning-of-line nil)
-  (message "")
+  (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) )
+  (if (not (equal todo-prv-lne lne))
       (progn
         (setq todo-prv-lne lne)
         (goto-line todo-prv-lne)
@@ -135,43 +171,86 @@
   todo-prv-ans
   )
 
-(defun todo-cmd-inst () "Insert new todo list entry."
+(defun todo-add-category (cat) "Add a new category to the TODO list."
   (interactive)
-  (beginning-of-line nil)
-  (setq todo-entry (concat "*/* " (read-from-minibuffer "New TODO entry: ")))
   (save-window-excursion
+    (setq todo-cats (cons cat todo-cats))
     (find-file todo-file-do)
-    (setq todo-prv-lne 0)
-    (let* ((todo-fst 1)
-           (todo-lst (+ 1 (count-lines (point-min) (point-max)))))
-      (while (< todo-fst todo-lst)
-        (setq todo-cur (/ (+ todo-fst todo-lst) 2))
-        (setq 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)
+    (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 (concat todo-entry "\n"))
-    (forward-char -1)
+    (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)
-  (message "")
+  (let* ((todo-entry (concat todo-prefix " " (read-from-minibuffer "New TODO entry: ")))
+         (temp-catgs todo-cats)
+         (todo-hstry (cons 'temp-cats (+ 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."
+(defun todo-cmd-kill () "Delete current TODO list entry."
   (interactive)
   (if (> (count-lines (point-min) (point-max)) 0)
       (progn
-        (setq todo-entry (todo-line))
-        (setq todo-answer (y-or-n-p (concat "Permanently remove '" todo-entry "'? ")))
-        (if todo-answer (progn (delete-region todo-begin (+ 1 todo-end)) (forward-char -1)))
+        (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 entry to delete.")
+    (message "No TODO list entry to delete.")
     )
   (beginning-of-line nil)
-  (message "")
   )
 
 (defun todo-cmd-rais () "Raise priority of current entry."
@@ -179,15 +258,15 @@
   (if (> (count-lines (point-min) (point-max)) 0)
       (progn
         (setq todo-entry (todo-line))
-        (delete-region todo-begin (+ 1 todo-end))
+        (delete-region (point-at-bol) (+ 1 (point-at-eol))) 
         (forward-line -1)
         (insert (concat todo-entry "\n"))
-        (forward-char -1)
+        (forward-line -1)
+        (message "")
         )
-    (message "No entry to raise.")
+    (message "No TODO list entry to raise.")
     )
   (beginning-of-line nil)
-  (message "")
   )
 
 (defun todo-cmd-lowr () "Lower priority of current entry."
@@ -195,54 +274,96 @@
   (if (> (count-lines (point-min) (point-max)) 0)
       (progn
         (setq todo-entry (todo-line))
-        (delete-region todo-begin (+ 1 todo-end))
+        (delete-region (point-at-bol) (+ 1 (point-at-eol))) 
         (forward-line 1)
         (insert (concat todo-entry "\n"))
-        (forward-char -1)
+        (forward-line -1)
+        (message "")
         )
-    (message "No entry to raise.")
+    (message "No TODO list entry to raise.")
     )
   (beginning-of-line nil)
-  (message "")
   )
 
-(defun todo-cmd-file () "File away the current todo list entry."
+(defun todo-cmd-file () "File away the current TODO list entry."
   (interactive)
   (if (> (count-lines (point-min) (point-max)) 0)
       (progn
-        (setq time-stamp-format " %2d, %y, %02I:%02M%p %b")
-        (setq tmp (time-stamp-string))
-        (beginning-of-line nil)
-        (insert (concat (substring tmp 19 22) (substring tmp 0 19)))
-        (end-of-line nil)
-        (insert (concat " (" (read-from-minibuffer "Comment: ") ")"))
-        (todo-line)
-        (append-to-file todo-begin (+ 1 todo-end) todo-file-done)
-        (delete-region todo-begin (+ 1 todo-end))
-        (forward-char -1)
+        (let ((time-stamp-format "%3b %2d, %y, %02I:%02M%p"))
+          (beginning-of-line nil)
+          (insert (time-stamp-string))
+          (end-of-line nil)
+          (insert (concat " (" (read-fromminibuffer "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 entry to delete.")
+    (message "No TODO list entry to delete.")
     )
   (beginning-of-line nil)
-  (message "")
   )
 
 ;; ---------------------------------------------------------------------------
 
-(defun todo-mode ()
-  "Major mode for editing TODO lists.\n\n\\{todo-mode-map}"
+;; 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-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)
-  (find-file todo-file-do)
   (setq major-mode 'todo-mode)
   (setq mode-name "TODO")
   (use-local-map todo-mode-map)
+  (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)
-  (run-hooks 'todo-mode-hook) )
+  (todo-cat-slct)
+  )
 
 (provide 'todomode)
 
 ;; ---------------------------------------------------------------------------
 
-;;; todomode.el ends here
+;; todomode.el ends here
 
 ;; ---------------------------------------------------------------------------