(require 'calendar)
(provide 'appt)
(defcustom appt-issue-message t
"*Non-nil means check for appointments in the diary buffer.
To be detected, the diary entry must have the time
as the first thing on a line."
:type 'boolean
:group 'appt)
(defcustom appt-message-warning-time 12
"*Time in minutes before an appointment that the warning begins."
:type 'integer
:group 'appt)
(defcustom appt-audible t
"*Non-nil means beep to indicate appointment."
:type 'boolean
:group 'appt)
(defcustom appt-visible t
"*Non-nil means display appointment message in echo area."
:type 'boolean
:group 'appt)
(defcustom appt-display-mode-line t
"*Non-nil means display minutes to appointment and time on the mode line."
:type 'boolean
:group 'appt)
(defcustom appt-msg-window t
"*Non-nil means display appointment message in another window."
:type 'boolean
:group 'appt)
(defcustom appt-display-duration 10
"*The number of seconds an appointment message is displayed."
:type 'integer
:group 'appt)
(defcustom appt-display-diary t
"*Non-nil means to display the next days diary on the screen.
This will occur at midnight when the appointment list is updated."
:type 'boolean
:group 'appt)
(defvar appt-time-msg-list nil
"The list of appointments for today.
Use `appt-add' and `appt-delete' to add and delete appointments from list.
The original list is generated from the today's `diary-entries-list'.
The number before each time/message is the time in minutes from midnight.")
(defconst appt-max-time 1439
"11:59pm in minutes - number of minutes in a day minus 1.")
(defcustom appt-display-interval 3
"*Number of minutes to wait between checking the appointment list."
:type 'integer
:group 'appt)
(defvar appt-buffer-name " *appt-buf*"
"Name of the appointments buffer.")
(defvar appt-disp-window-function 'appt-disp-window
"Function called to display appointment window.")
(defvar appt-delete-window-function 'appt-delete-window
"Function called to remove appointment window and buffer.")
(defvar appt-mode-string nil
"String being displayed in the mode line saying you have an appointment.
The actual string includes the amount of time till the appointment.")
(defvar appt-prev-comp-time nil
"Time of day (mins since midnight) at which we last checked appointments.")
(defvar appt-now-displayed nil
"Non-nil when we have started notifying about a appointment that is near.")
(defvar appt-display-count nil)
(defun appt-check ()
"Check for an appointment and update the mode line.
Note: the time must be the first thing in the line in the diary
for a warning to be issued.
The format of the time can be either 24 hour or am/pm.
Example:
02/23/89
18:00 Dinner
Thursday
11:45am Lunch meeting.
Appointments are checked every `appt-display-interval' minutes.
The following variables control appointment notification:
`appt-issue-message'
If t, the diary buffer is checked for appointments.
`appt-message-warning-time'
Variable used to determine if appointment message
should be displayed.
`appt-audible'
Variable used to determine if appointment is audible.
Default is t.
`appt-visible'
Variable used to determine if appointment message should be
displayed in the mini-buffer. Default is t.
`appt-msg-window'
Variable used to determine if appointment message
should temporarily appear in another window. Mutually exclusive
to `appt-visible'.
`appt-display-duration'
The number of seconds an appointment message
is displayed in another window.
`appt-disp-window-function'
Function called to display appointment window. You can customize
appt.el by setting this variable to a function different from the
one provided with this package.
`appt-delete-window-function'
Function called to remove appointment window and buffer. You can
customize appt.el by setting this variable to a function different
from the one provided with this package."
(let* ((min-to-app -1)
(new-time "")
(prev-appt-mode-string appt-mode-string)
(prev-appt-display-count (or appt-display-count 0))
(full-check
(or (not appt-now-displayed)
(= 0 (mod prev-appt-display-count appt-display-interval))))
(mode-line-only
(and (not full-check) appt-now-displayed)))
(when (or full-check mode-line-only)
(save-excursion
(let* ((now (decode-time))
(cur-hour (nth 2 now))
(cur-min (nth 1 now))
(cur-comp-time (+ (* cur-hour 60) cur-min)))
(if (or (null appt-prev-comp-time)
(< cur-comp-time appt-prev-comp-time))
(condition-case nil
(progn
(if (and view-diary-entries-initially appt-display-diary)
(diary)
(let ((diary-display-hook 'appt-make-list))
(diary))))
(error nil)))
(setq appt-prev-comp-time cur-comp-time)
(setq appt-mode-string nil)
(setq appt-display-count nil)
(if (and appt-issue-message appt-time-msg-list)
(let ((appt-comp-time (car (car (car appt-time-msg-list)))))
(setq min-to-app (- appt-comp-time cur-comp-time))
(while (and appt-time-msg-list
(< appt-comp-time cur-comp-time))
(setq appt-time-msg-list (cdr appt-time-msg-list))
(if appt-time-msg-list
(setq appt-comp-time
(car (car (car appt-time-msg-list))))))
(if (and (< appt-comp-time appt-message-warning-time)
(> (+ cur-comp-time appt-message-warning-time)
appt-max-time))
(setq min-to-app (+ (- (1+ appt-max-time) cur-comp-time))
appt-comp-time))
(when (and (<= min-to-app appt-message-warning-time)
(>= min-to-app 0))
(setq appt-now-displayed t)
(setq appt-display-count
(1+ prev-appt-display-count))
(unless mode-line-only
(if appt-msg-window
(progn
(setq new-time (format-time-string "%a %b %e "
(current-time)))
(funcall
appt-disp-window-function
(number-to-string min-to-app) new-time
(car (cdr (car appt-time-msg-list))))
(run-at-time
(format "%d sec" appt-display-duration)
nil
appt-delete-window-function))
(if appt-visible
(message "%s"
(car (cdr (car appt-time-msg-list)))))
(if appt-audible
(beep 1))))
(when appt-display-mode-line
(setq appt-mode-string
(concat " App't in "
(number-to-string min-to-app)
" min. ")))
(if (= min-to-app 0)
(setq appt-time-msg-list
(cdr appt-time-msg-list)
appt-display-count nil)))))
(and appt-display-mode-line
(not (equal appt-mode-string
prev-appt-mode-string))
(progn
(force-mode-line-update t)
(if appt-mode-string
(sit-for 0)))))))))
(defun appt-disp-window (min-to-app new-time appt-msg)
"Display appointment message APPT-MSG in a separate buffer."
(require 'electric)
(if (equal (selected-window) (minibuffer-window))
(if (other-window 1)
(select-window (other-window 1))
(if (display-multi-frame-p)
(select-frame (other-frame 1)))))
(let* ((this-buffer (current-buffer))
(this-window (selected-window))
(appt-disp-buf (set-buffer (get-buffer-create appt-buffer-name))))
(if (cdr (assq 'unsplittable (frame-parameters)))
(display-buffer appt-disp-buf)
(unless (or (special-display-p (buffer-name appt-disp-buf))
(same-window-p (buffer-name appt-disp-buf)))
(appt-select-lowest-window)
(split-window))
(pop-to-buffer appt-disp-buf))
(setq mode-line-format
(concat "-------------------- Appointment in "
min-to-app " minutes. " new-time " %-"))
(erase-buffer)
(insert-string appt-msg)
(shrink-window-if-larger-than-buffer (get-buffer-window appt-disp-buf t))
(set-buffer-modified-p nil)
(raise-frame (selected-frame))
(select-window this-window)
(if appt-audible
(beep 1))))
(defun appt-delete-window ()
"Function called to undisplay appointment messages.
Usually just deletes the appointment buffer."
(let ((window (get-buffer-window appt-buffer-name t)))
(and window
(or (eq window (frame-root-window (window-frame window)))
(delete-window window))))
(kill-buffer appt-buffer-name)
(if appt-audible
(beep 1)))
(defun appt-select-lowest-window ()
"Select the lowest window on the frame."
(let ((lowest-window (selected-window))
(bottom-edge (nth 3 (window-edges))))
(walk-windows (lambda (w)
(let ((next-bottom-edge (nth 3 (window-edges w))))
(when (< bottom-edge next-bottom-edge)
(setq bottom-edge next-bottom-edge
lowest-window w)))))
(select-window lowest-window)))
(defun appt-add (new-appt-time new-appt-msg)
"Add an appointment for the day at NEW-APPT-TIME and issue message NEW-APPT-MSG.
The time should be in either 24 hour format or am/pm format."
(interactive "sTime (hh:mm[am/pm]): \nsMessage: ")
(if (string-match "[0-9]?[0-9]:[0-9][0-9]\\(am\\|pm\\)?" new-appt-time)
nil
(error "Unacceptable time-string"))
(let* ((appt-time-string (concat new-appt-time " " new-appt-msg))
(appt-time (list (appt-convert-time new-appt-time)))
(time-msg (cons appt-time (list appt-time-string))))
(setq appt-time-msg-list (nconc appt-time-msg-list (list time-msg)))
(setq appt-time-msg-list (appt-sort-list appt-time-msg-list))))
(defun appt-delete ()
"Delete an appointment from the list of appointments."
(interactive)
(let* ((tmp-msg-list appt-time-msg-list))
(while tmp-msg-list
(let* ((element (car tmp-msg-list))
(prompt-string (concat "Delete "
(prin1-to-string (car (cdr element)))
" from list? "))
(test-input (y-or-n-p prompt-string)))
(setq tmp-msg-list (cdr tmp-msg-list))
(if test-input
(setq appt-time-msg-list (delq element appt-time-msg-list)))))
(appt-check)
(message "")))
(eval-when-compile (defvar number)
(defvar original-date)
(defvar diary-entries-list))
(defun appt-make-list ()
"Create the appointments list from todays diary buffer.
The time must be at the beginning of a line for it to be
put in the appointments list.
02/23/89
12:00pm lunch
Wednesday
10:00am group meeting
We assume that the variables DATE and NUMBER
hold the arguments that `list-diary-entries' received.
They specify the range of dates that the diary is being processed for."
(if (and (not (calendar-date-compare
(list (calendar-current-date))
(list original-date)))
(calendar-date-compare
(list (calendar-current-date))
(list (calendar-gregorian-from-absolute
(+ (calendar-absolute-from-gregorian original-date)
number)))))
(save-excursion
(setq appt-time-msg-list nil)
(if diary-entries-list
(let ((entry-list diary-entries-list)
(new-time-string ""))
(while (and entry-list
(calendar-date-compare
(car entry-list) (list (calendar-current-date))))
(setq entry-list (cdr entry-list)))
(while (and entry-list
(calendar-date-equal
(calendar-current-date) (car (car entry-list))))
(let ((time-string (substring (prin1-to-string
(cadr (car entry-list))) 1 -1)))
(while (string-match
"[0-9]?[0-9]:[0-9][0-9]\\(am\\|pm\\)?\\(.*\n\\)*.*"
time-string)
(let* ((appt-time-string (match-string 0 time-string)))
(if (< (match-end 0) (length time-string))
(setq new-time-string (substring time-string
(+ (match-end 0) 1)
nil))
(setq new-time-string ""))
(string-match "[0-9]?[0-9]:[0-9][0-9]\\(am\\|pm\\)?"
time-string)
(let* ((appt-time (list (appt-convert-time
(match-string 0 time-string))))
(time-msg (cons appt-time
(list appt-time-string))))
(setq time-string new-time-string)
(setq appt-time-msg-list (nconc appt-time-msg-list
(list time-msg)))))))
(setq entry-list (cdr entry-list)))))
(setq appt-time-msg-list (appt-sort-list appt-time-msg-list))
(let* ((now (decode-time))
(cur-hour (nth 2 now))
(cur-min (nth 1 now))
(cur-comp-time (+ (* cur-hour 60) cur-min))
(appt-comp-time (car (car (car appt-time-msg-list)))))
(while (and appt-time-msg-list (< appt-comp-time cur-comp-time))
(setq appt-time-msg-list (cdr appt-time-msg-list))
(if appt-time-msg-list
(setq appt-comp-time (car (car (car appt-time-msg-list))))))))))
(defun appt-sort-list (appt-list)
"Simple sort to put the appointments list APPT-LIST in order.
Scan the list for the smallest element left in the list.
Append the smallest element left into the new list, and remove
it from the original list."
(let ((order-list nil))
(while appt-list
(let* ((element (car appt-list))
(element-time (car (car element)))
(tmp-list (cdr appt-list)))
(while tmp-list
(if (< element-time (car (car (car tmp-list))))
nil
(setq element (car tmp-list))
(setq element-time (car (car element))))
(setq tmp-list (cdr tmp-list)))
(setq order-list (nconc order-list (list element)))
(setq appt-list (delq element appt-list))))
order-list))
(defun appt-convert-time (time2conv)
"Convert hour:min[am/pm] format to minutes from midnight."
(let ((conv-time 0)
(hr 0)
(min 0))
(string-match ":\\([0-9][0-9]\\)" time2conv)
(setq min (string-to-int
(match-string 1 time2conv)))
(string-match "[0-9]?[0-9]:" time2conv)
(setq hr (string-to-int
(match-string 0 time2conv)))
(cond ((and (string-match "pm" time2conv) (< hr 12))
(setq hr (+ 12 hr)))
((and (string-match "am" time2conv) (= hr 12))
(setq hr 0)))
(setq conv-time (+ (* hr 60) min))
conv-time))
(defvar appt-timer nil
"Timer used for diary appointment notifications (`appt-check').")
(unless appt-timer
(setq appt-timer (run-at-time t 60 'appt-check)))
(or global-mode-string (setq global-mode-string '("")))
(or (memq 'appt-mode-string global-mode-string)
(setq global-mode-string
(append global-mode-string '(appt-mode-string))))