Added agenda binding: ! shows/hides deadline tasks

org-agenda.el (org-agenda-include-deadlines): Added new
customization variable to determine whether unscheduled tasks
should appear in the agenda solely because of their deadline.
Default to true, which was the previous behavior (it just wasn't
configurable).
(org-agenda-mode-map, org-agenda-view-mode-dispatch): Bind ! in
the agenda to show/hide deadline tasks.
(org-agenda-menu): Added menu option for show/hide deadlines.
(org-agenda-list): Make the agenda list sensitive to the value of
`org-agenda-include-deadlines'.
(org-agenda-toggle-deadlines): New function to toggle the value of
`org-agenda-include-deadlines' and repaint the modeline
indicators.
(org-agenda-set-mode-name): Show "Deadlines" in the agenda
modeline if deadline tasks are being displayed.

lisp/ChangeLog

@@ -1,3 +1,21 @@
+2010-03-15  John Wiegley  <jwiegley@gmail.com>
+
+	* org-agenda.el (org-agenda-include-deadlines): Added new
+	customization variable to determine whether unscheduled tasks
+	should appear in the agenda solely because of their deadline.
+	Default to true, which was the previous behavior (it just wasn't
+	configurable).
+	(org-agenda-mode-map, org-agenda-view-mode-dispatch): Bind ! in
+	the agenda to show/hide deadline tasks.
+	(org-agenda-menu): Added menu option for show/hide deadlines.
+	(org-agenda-list): Make the agenda list sensitive to the value of
+	`org-agenda-include-deadlines'.
+	(org-agenda-toggle-deadlines): New function to toggle the value of
+	`org-agenda-include-deadlines' and repaint the modeline
+	indicators.
+	(org-agenda-set-mode-name): Show "Deadlines" in the agenda
+	modeline if deadline tasks are being displayed.
+
 2010-03-14  Carsten Dominik  <carsten.dominik@gmail.com>
 
 	* org-table.el (org-table-eval-formula): Replace $# and @# by

lisp/org-agenda.el

@@ -912,6 +912,12 @@ Custom commands can set this variable in the options section."
   :group 'org-agenda-daily/weekly
   :type 'boolean)
 
+(defcustom org-agenda-include-deadlines t
+  "If non-nil, include entries within their deadline warning period.
+Custom commands can set this variable in the options section."
+  :group 'org-agenda-daily/weekly
+  :type 'boolean)
+
 (defcustom org-agenda-include-all-todo nil
   "Set  means weekly/daily agenda will always contain all TODO entries.
 The TODO entries will be listed at the top of the agenda, before
@@ -1585,6 +1591,7 @@ The following commands are available:
 (org-defkey org-agenda-mode-map "l" 'org-agenda-log-mode)
 (org-defkey org-agenda-mode-map "v" 'org-agenda-view-mode-dispatch)
 (org-defkey org-agenda-mode-map "D" 'org-agenda-toggle-diary)
+(org-defkey org-agenda-mode-map "!" 'org-agenda-toggle-deadlines)
 (org-defkey org-agenda-mode-map "G" 'org-agenda-toggle-time-grid)
 (org-defkey org-agenda-mode-map "r" 'org-agenda-redo)
 (org-defkey org-agenda-mode-map "g" 'org-agenda-redo)
@@ -1685,6 +1692,9 @@ The following commands are available:
      ["Include Diary" org-agenda-toggle-diary
       :style toggle :selected org-agenda-include-diary
       :active (org-agenda-check-type nil 'agenda)]
+     ["Include Deadlines" org-agenda-toggle-deadlines
+      :style toggle :selected org-agenda-include-deadlines
+      :active (org-agenda-check-type nil 'agenda)]
      ["Use Time Grid" org-agenda-toggle-time-grid
       :style toggle :selected org-agenda-use-time-grid
       :active (org-agenda-check-type nil 'agenda)]
@@ -3270,18 +3280,23 @@ given in `org-agenda-start-on-weekday'."
       (while (setq file (pop files))
 	(catch 'nextfile
 	  (org-check-agenda-file file)
-	  (cond
-	   ((eq org-agenda-show-log 'only)
-	    (setq rtn (org-agenda-get-day-entries
-		       file date :closed)))
-	   (org-agenda-show-log
-	    (setq rtn (apply 'org-agenda-get-day-entries
-			     file date
-			     (append '(:closed) org-agenda-entry-types))))
-	   (t
-	    (setq rtn (apply 'org-agenda-get-day-entries
-			     file date
-			     org-agenda-entry-types))))
+	  (let ((org-agenda-entry-types org-agenda-entry-types))
+	    (if org-agenda-include-deadlines
+		(add-to-list 'org-agenda-entry-types :deadline)
+	      (setq org-agenda-entry-types
+		    (delq :deadline org-agenda-entry-types)))
+	    (cond
+	     ((eq org-agenda-show-log 'only)
+	      (setq rtn (org-agenda-get-day-entries
+			 file date :closed)))
+	     (org-agenda-show-log
+	      (setq rtn (apply 'org-agenda-get-day-entries
+			       file date
+			       (append '(:closed) org-agenda-entry-types))))
+	     (t
+	      (setq rtn (apply 'org-agenda-get-day-entries
+			       file date
+			       org-agenda-entry-types)))))
 	  (setq rtnall (append rtnall rtn))))
       (if org-agenda-include-diary
 	  (let ((org-agenda-search-headline-for-time t))
@@ -5713,6 +5728,7 @@ With prefix ARG, go backward that many times the current span."
       ((?E ?e) (call-interactively 'org-agenda-entry-text-mode))
       (?G (call-interactively 'org-agenda-toggle-time-grid))
       (?D (call-interactively 'org-agenda-toggle-diary))
+      (?\! (call-interactively 'org-agenda-toggle-deadlines))
       (?\[ (let ((org-agenda-include-inactive-timestamps t))
 	     (org-agenda-check-type t 'timeline 'agenda)
 	     (org-agenda-redo))
@@ -5950,6 +5966,16 @@ When called with a prefix argument, include all archive files as well."
   (message "Diary inclusion turned %s"
 	   (if org-agenda-include-diary "on" "off")))
 
+(defun org-agenda-toggle-deadlines ()
+  "Toggle diary inclusion in an agenda buffer."
+  (interactive)
+  (org-agenda-check-type t 'agenda)
+  (setq org-agenda-include-deadlines (not org-agenda-include-deadlines))
+  (org-agenda-redo)
+  (org-agenda-set-mode-name)
+  (message "Deadlines inclusion turned %s"
+	   (if org-agenda-include-deadlines "on" "off")))
+
 (defun org-agenda-toggle-time-grid ()
   "Toggle time grid in an agenda buffer."
   (interactive)
@@ -5970,6 +5996,7 @@ When called with a prefix argument, include all archive files as well."
 		(if org-agenda-follow-mode     " Follow" "")
 		(if org-agenda-entry-text-mode " ETxt"   "")
 		(if org-agenda-include-diary   " Diary"  "")
+		(if org-agenda-include-deadlines " Deadlines"  "")
 		(if org-agenda-use-time-grid   " Grid"   "")
 		(if (and (boundp 'org-habit-show-habits)
 			 org-habit-show-habits) " Habit"   "")