Commit 0a2bb1a9 authored by Glenn Morris's avatar Glenn Morris
Browse files

Handle overlapping appointments in appt.el (bug#8377)

* lisp/calendar/appt.el (appt-disp-window-function): Doc fix.
(appt-check): Handle overlapping appointments.

* etc/NEWS: Mention appt-disp-window-function should handle lists now.
parent 6198ccd0
......@@ -511,6 +511,11 @@ See the variable `diary-comment-start'.
*** Appointments can specify their individual warning times.
See the variable `appt-warning-time-regexp'.
---
*** The function specified by `appt-disp-window-function' may be passed
lists of arguments if multiple appointments are due at similar times.
If you are using a custom function for this, you should update it.
+++
*** New function `diary-hebrew-birthday'.
......
2011-06-11 Glenn Morris <rgm@gnu.org>
* calendar/appt.el (appt-disp-window-function): Doc fix.
(appt-check): Handle overlapping appointments. (Bug#8337)
2011-06-11 Martin Rudalics <rudalics@gmx.at>
* window.el (window-tree-1, window-tree): New functions, moving
......
......@@ -154,7 +154,9 @@ always updates every minute."
"Function called to display appointment window.
Only relevant if reminders are being displayed in a window.
It should take three string arguments: the number of minutes till
the appointment, the current time, and the text of the appointment."
the appointment, the current time, and the text of the appointment.
Each argument may also be a list, if multiple appointments are
relevant at any one time."
:type 'function
:group 'appt)
......@@ -321,13 +323,12 @@ displayed in a window:
`appt-delete-window-function'
Function called to remove appointment window and buffer."
(interactive "P") ; so people can force updates
(let* ((min-to-app -1)
(prev-appt-mode-string appt-mode-string)
(let* ((prev-appt-mode-string appt-mode-string)
(prev-appt-display-count appt-display-count)
;; Convert current time to minutes after midnight (12.01am = 1).
(now (decode-time))
(now-mins (+ (* 60 (nth 2 now)) (nth 1 now)))
appt-mins appt-warn-time)
appt-mins appt-warn-time min-to-app min-list string-list)
(save-excursion ; FIXME ?
;; At first check in any day, update appointments to today's list.
(if (or force ; eg initialize, diary save
......@@ -349,57 +350,67 @@ displayed in a window:
(setq appt-prev-comp-time now-mins
appt-mode-string nil
appt-display-count 0)
;; Remove any entries that are in the past.
;; FIXME how can there be any such entries, given that this
;; function removes entries when they hit zero minutes,
;; and appt-make-list doesn't add any in the past in the first place?
(while (and appt-time-msg-list
(< (setq appt-mins (caar (car appt-time-msg-list)))
now-mins))
(setq appt-time-msg-list (cdr appt-time-msg-list)))
;; If there are entries in the list, and the user wants a
;; message issued, get the first time off of the list and
;; calculate the number of minutes until the appointment.
(when appt-time-msg-list
(setq appt-warn-time (or (nth 3 (car appt-time-msg-list))
appt-message-warning-time)
min-to-app (- appt-mins now-mins))
;; If we have an appointment between midnight and
;; `appt-warn-time' minutes after midnight, we
;; must begin to issue a message before midnight. Midnight
;; is considered 0 minutes and 11:59pm is 1439
;; minutes. Therefore we must recalculate the minutes to
;; appointment variable. It is equal to the number of
;; minutes before midnight plus the number of minutes after
;; midnight our appointment is.
;; FIXME but appt-make-list constructs appt-time-msg-list to only
;; contain entries with today's date, so this cannot work?
;; Also above we just removed anything with appt-mins < now-mins.
(if (and (< appt-mins appt-warn-time)
(> (+ now-mins appt-warn-time) appt-max-time))
(setq min-to-app (+ (- (1+ appt-max-time) now-mins)
appt-mins)))
;; Issue warning if the appointment time is within
;; appt-message-warning time.
(when (and (<= min-to-app appt-warn-time)
(>= min-to-app 0))
;; This is true every appt-display-interval minutes.
(and (zerop (mod prev-appt-display-count appt-display-interval))
(appt-display-message (cadr (car appt-time-msg-list))
min-to-app))
(when appt-display-mode-line
(setq appt-mode-string
(concat " " (propertize
(appt-mode-line (mapcar 'number-to-string
(list min-to-app)) t)
'face 'mode-line-emphasis))))
;; When an appointment is reached, delete it from the
;; list. Reset the count to 0 in case we display another
;; appointment on the next cycle.
(if (zerop min-to-app)
(setq appt-time-msg-list (cdr appt-time-msg-list)
appt-display-count 0)
(setq appt-display-count (1+ prev-appt-display-count)))))
;; If there are entries in the list get each time off of the
;; list and calculate the number of minutes until the appointment.
;; TODO we are looping over all the appointments each time.
;; We could instead sort them by the time at which we need to
;; start warning. But then removing entries in the past becomes
;; less straightforward.
(dolist (appt appt-time-msg-list)
;; Remove any entries that are in the past.
;; FIXME how can there be any such entries, given that this
;; function removes entries when they hit zero minutes,
;; and appt-make-list doesn't add any in the past in the first place?
(if (< (setq appt-mins (caar appt)) now-mins)
(setq appt-time-msg-list (cdr appt-time-msg-list))
(setq appt-warn-time (or (nth 3 appt) appt-message-warning-time)
min-to-app (- appt-mins now-mins))
;; If we have an appointment between midnight and
;; `appt-warn-time' minutes after midnight, we
;; must begin to issue a message before midnight. Midnight
;; is considered 0 minutes and 11:59pm is 1439
;; minutes. Therefore we must recalculate the minutes to
;; appointment variable. It is equal to the number of
;; minutes before midnight plus the number of minutes after
;; midnight our appointment is.
;; FIXME but appt-make-list constructs appt-time-msg-list to only
;; contain entries with today's date, so this cannot work?
;; Also above we just removed anything with appt-mins < now-mins.
(if (and (< appt-mins appt-warn-time)
(> (+ now-mins appt-warn-time) appt-max-time))
(setq min-to-app (+ (- (1+ appt-max-time) now-mins)
appt-mins)))
;; Issue warning if the appointment time is within the warning time.
(when (and (<= min-to-app appt-warn-time)
(>= min-to-app 0))
(push min-to-app min-list)
(push (cadr appt) string-list)
;; When an appointment is reached, delete it from the list.
(if (zerop min-to-app)
(setq appt-time-msg-list (delete appt appt-time-msg-list))))))
(when min-list
(setq min-list (nreverse min-list)
string-list (nreverse string-list))
;; This is true every appt-display-interval minutes from the
;; time at which we first started reminding.
;; TODO in the case of multiple appointments, whose interval
;; should we respect? The first one that we started warning about?
;; That's what we do now, and this makes sense if you interpret
;; a-d-i as "don't remind me any more frequently than this".
;; But should we always show a message when a new appt becomes due?
;; When one appt gets removed, should we switch to the interval
;; of the next?
(and (zerop (mod prev-appt-display-count appt-display-interval))
(appt-display-message string-list min-list))
(when appt-display-mode-line
(setq appt-mode-string
(concat " " (propertize
(appt-mode-line (mapcar 'number-to-string
min-list) t)
'face 'mode-line-emphasis))))
;; Reset count to 0 in case we display another appt on the next cycle.
(setq appt-display-count (if (eq '(0) min-list) 0
(1+ prev-appt-display-count))))
;; If we have changed the mode line string, redisplay all mode lines.
(and appt-display-mode-line
(not (string-equal appt-mode-string prev-appt-mode-string))
......
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