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+;;; cal-menu.el --- calendar functions for menu bar and popup menu support
+
+;; Copyright (C) 1994 Free Software Foundation, Inc.
+
+;; Author: Edward M. Reingold <reingold@cs.uiuc.edu>
+;;      Lara Rios <lrios@coewl.cen.uiuc.edu>
+;; Keywords: calendar
+;; Human-Keywords: calendar, popup menus, menu bar
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY.  No author or distributor
+;; accepts responsibility to anyone for the consequences of using it
+;; or for whether it serves any particular purpose or works at all,
+;; unless he says so in writing.  Refer to the GNU Emacs General Public
+;; License for full details.
+
+;; Everyone is granted permission to copy, modify and redistribute
+;; GNU Emacs, but only under the conditions described in the
+;; GNU Emacs General Public License.   A copy of this license is
+;; supposed to have been given to you along with GNU Emacs so you
+;; can know your rights and responsibilities.  It should be in a
+;; file named COPYING.  Among other things, the copyright notice
+;; and this notice must be preserved on all copies.
+
+;;; Commentary:
+
+;; This collection of functions implements menu bar and popup menu support for
+;; calendar.el.
+
+;; Comments, corrections, and improvements should be sent to
+;;  Edward M. Reingold               Department of Computer Science
+;;  (217) 333-6733                   University of Illinois at Urbana-Champaign
+;;  reingold@cs.uiuc.edu             1304 West Springfield Avenue
+;;                                   Urbana, Illinois 61801
+
+;;; Code:
+
+(define-key calendar-mode-map [down-mouse-2] 'calendar-mouse-date-menu)
+  
+(define-key calendar-mode-map [menu-bar moon]
+  '("Moon" . calendar-phases-of-moon))
+
+(define-key calendar-mode-map [menu-bar diary]
+  (cons "Diary" (make-sparse-keymap "Diary")))
+
+(define-key calendar-mode-map [menu-bar diary heb]
+  '("Insert Hebrew" . calendar-mouse-insert-hebrew-diary-entry))
+(define-key calendar-mode-map [menu-bar diary isl]
+  '("Insert Islamic" . calendar-mouse-insert-islamic-diary-entry))
+(define-key calendar-mode-map [menu-bar diary cyc]
+  '("Insert cyclic" . insert-cyclic-diary-entry))
+(define-key calendar-mode-map [menu-bar diary blk]
+  '("Insert block" . insert-block-diary-entry))
+(define-key calendar-mode-map [menu-bar diary ann]
+  '("Insert anniversary" . insert-anniversary-diary-entry))
+(define-key calendar-mode-map [menu-bar diary yr]
+  '("Insert yearly" . insert-yearly-diary-entry))
+(define-key calendar-mode-map [menu-bar diary mon]
+  '("Insert monthly" . insert-monthly-diary-entry))
+(define-key calendar-mode-map [menu-bar diary wk]
+  '("Insert weekly" . insert-weekly-diary-entry))
+(define-key calendar-mode-map [menu-bar diary ent]
+  '("Insert daily". insert-diary-entry))
+(define-key calendar-mode-map [menu-bar diary all]
+  '("Show all" . show-all-diary-entries))
+(define-key calendar-mode-map [menu-bar diary mark]
+ '("Mark all" . mark-diary-entries))
+(define-key calendar-mode-map [menu-bar diary view]
+  '("Cursor date" . view-diary-entries))
+
+(define-key calendar-mode-map [menu-bar holidays]
+  (cons "Holidays" (make-sparse-keymap "Holidays")))
+
+(define-key calendar-mode-map [menu-bar holidays unmark]
+  '("Unmark" . calendar-unmark))
+(define-key calendar-mode-map [menu-bar holidays mark]
+  '("Mark" . mark-calendar-holidays))
+(define-key calendar-mode-map [menu-bar holidays 3-mon]
+  '("3 months" . list-calendar-holidays))
+(define-key calendar-mode-map [menu-bar holidays 1-day]
+  '("One day" . calendar-cursor-holidays))
+
+(define-key calendar-mode-map [menu-bar goto]
+  (cons "Goto" (make-sparse-keymap "Goto")))
+
+(define-key calendar-mode-map [menu-bar goto french]
+  '("French date" . calendar-goto-french-date))
+(define-key calendar-mode-map [menu-bar goto mayan]
+  (cons "Mayan date" (make-sparse-keymap "Mayan")))
+(define-key calendar-mode-map [menu-bar goto julian]
+  '("Julian date" . calendar-goto-julian-date))
+(define-key calendar-mode-map [menu-bar goto islamic]
+  '("Islamic date" . calendar-goto-islamic-date))
+(define-key calendar-mode-map [menu-bar goto hebrew]
+  '("Hebrew date" . calendar-goto-hebrew-date))
+(define-key calendar-mode-map [menu-bar goto astro]
+  '("Astronomical date" . calendar-goto-astro-date))
+(define-key calendar-mode-map [menu-bar goto iso]
+  '("ISO date" . calendar-goto-iso-date))
+(define-key calendar-mode-map [menu-bar goto gregorian]
+  '("Other date" . calendar-goto-date))
+(define-key calendar-mode-map [menu-bar goto end-of-year]
+  '("End of year" . calendar-end-of-year))
+(define-key calendar-mode-map [menu-bar goto beginning-of-year]
+  '("Beginning of year" . calendar-beginning-of-year))
+(define-key calendar-mode-map [menu-bar goto end-of-month]
+  '("End of month" . calendar-end-of-month))
+(define-key calendar-mode-map [menu-bar goto beginning-of-month]
+  '("Beginning of month" . calendar-beginning-of-month))
+(define-key calendar-mode-map [menu-bar goto end-of-week]
+  '("End of week" . calendar-end-of-week))
+(define-key calendar-mode-map [menu-bar goto beginning-of-week]
+  '("Beginning of week" . calendar-beginning-of-week))
+(define-key calendar-mode-map [menu-bar goto today]
+  '("Today" . calendar-current-month))
+
+
+(define-key calendar-mode-map [menu-bar goto mayan prev-rnd]
+  '("Previous Round" . calendar-previous-calendar-round-date))
+(define-key calendar-mode-map [menu-bar goto mayan nxt-rnd]
+  '("Next Round" . calendar-next-calendar-round-date))
+(define-key calendar-mode-map [menu-bar goto mayan prev-haab]
+  '("Previous Haab" . calendar-previous-haab-date))
+(define-key calendar-mode-map [menu-bar goto mayan next-haab]
+  '("Next Haab" . calendar-next-haab-date))
+(define-key calendar-mode-map [menu-bar goto mayan prev-tzol]
+  '("Previous Tzolkin" . calendar-previous-tzolkin-date))
+(define-key calendar-mode-map [menu-bar goto mayan next-tzol]
+  '("Next Tzolkin" . calendar-next-tzolkin-date))
+
+(define-key calendar-mode-map [menu-bar scroll]
+  (cons "Scroll" (make-sparse-keymap "Scroll")))
+
+(define-key calendar-mode-map [menu-bar scroll bk-12]
+  '("Backward 1 Year" . "4\ev"))
+(define-key calendar-mode-map [menu-bar scroll bk-3]
+  '("Backward 3 Months" . scroll-calendar-right-three-months))
+(define-key calendar-mode-map [menu-bar scroll bk-1]
+  '("Backward 1 Month" . scroll-calendar-right))
+(define-key calendar-mode-map [menu-bar scroll fwd-12]
+  '("Forward 1 Year" . "4\C-v"))
+(define-key calendar-mode-map [menu-bar scroll fwd-3]
+  '("Forward 3 Months" . scroll-calendar-left-three-months))
+(define-key calendar-mode-map [menu-bar scroll fwd-1]
+  '("Forward 1 Month" . scroll-calendar-left))
+
+(put 'calendar-forward-day 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-backward-day 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-forward-week 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-backward-week 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-forward-month 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-backward-month 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-forward-year 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-backward-year 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-beginning-of-year 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-end-of-year 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-beginning-of-month 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-end-of-month 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-end-of-week 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-beginning-of-week 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-mouse-print-dates 'menu-enable '(calendar-event-to-date))
+(put 'calendar-sunrise-sunset 'menu-enable '(calendar-event-to-date))
+(put 'calendar-cursor-holidays 'menu-enable '(calendar-cursor-to-date))
+(put 'view-diary-entries 'menu-enable '(calendar-cursor-to-date))
+(put 'calendar-mouse-insert-hebrew-diary-entry
+     'menu-enable
+     '(calendar-cursor-to-date))
+(put 'calendar-mouse-insert-islamic-diary-entry
+     'menu-enable
+     '(calendar-cursor-to-date))
+(put 'insert-cyclic-diary-entry 'menu-enable '(calendar-cursor-to-date))
+(put 'insert-block-diary-entry 'menu-enable '(calendar-cursor-to-date))
+(put 'insert-anniversary-diary-entry 'menu-enable '(calendar-cursor-to-date))
+(put 'insert-yearly-diary-entry 'menu-enable '(calendar-cursor-to-date))
+(put 'insert-monthly-diary-entry 'menu-enable '(calendar-cursor-to-date))
+(put 'insert-weekly-diary-entry 'menu-enable '(calendar-cursor-to-date))
+
+(defun calendar-event-to-date ()
+  "Date of last event. Nil if last event was not done on a date."
+  (save-excursion
+    (goto-char (posn-point (event-start last-input-event)))
+    (calendar-cursor-to-date)))
+
+(defun calendar-mouse-insert-hebrew-diary-entry (event)
+  "Pop up menu to insert a Hebrew-date diary entry."
+  (interactive "e")
+  (let ((hebrew-selection
+         (x-popup-menu
+          event
+          (list "Hebrew insert menu"
+                (list (calendar-hebrew-date-string (calendar-cursor-to-date))
+                      '("One time" . insert-hebrew-diary-entry)
+                      '("Monthly" . insert-monthly-hebrew-diary-entry)
+                      '("Yearly" . insert-yearly-hebrew-diary-entry))))))
+    (and hebrew-selection (call-interactively hebrew-selection))))
+
+(defun calendar-mouse-insert-islamic-diary-entry (event)
+  "Pop up menu to insert an Islamic-date diary entry."
+  (interactive "e")
+  (let ((islamic-selection
+         (x-popup-menu
+          event
+          (list "Islamic insert menu"
+                (list (calendar-islamic-date-string (calendar-cursor-to-date))
+                      '("One time" . insert-islamic-diary-entry)
+                      '("Monthly" . insert-monthly-islamic-diary-entry)
+                      '("Yearly" . insert-yearly-islamic-diary-entry))))))
+    (and islamic-selection (call-interactively islamic-selection))))
+
+(defun calendar-mouse-sunrise/sunset ()
+  "Show sunrise/sunset times for mouse-selected date."
+  (interactive)
+  (save-excursion
+    (calendar-goto-date (calendar-event-to-date))
+    (calendar-sunrise-sunset)))
+
+(defun calendar-mouse-holidays ()
+  "Show holidays for mouse-selected date."
+  (interactive)
+  (save-excursion
+    (calendar-goto-date (calendar-event-to-date))
+    (calendar-cursor-holidays)))
+
+(defun calendar-mouse-view-diary-entries ()
+  "View diary entries on mouse-selected date."
+  (interactive)
+  (save-excursion
+    (calendar-goto-date (calendar-event-to-date))
+    (view-diary-entries 1)))
+
+(defun calendar-mouse-print-dates ()
+  "Pop up menu of equivalent dates to mouse selected date."
+  (interactive)
+  (let ((date (calendar-event-to-date)))
+    (x-popup-menu
+     event
+     (list
+      "Date Menu"
+      (append
+       (list
+        (concat (calendar-date-string date) " (Gregorian)")
+        (list (calendar-iso-date-string date))
+        (list (format "ISO date: %s" (calendar-iso-date-string date)))
+        (list (format "Julian date: %s" (calendar-julian-date-string date)))
+        (list (format "Astronomical (Julian) date (before noon): %s"
+                      (calendar-astro-date-string date)))
+        (list (format "Hebrew date (before sunset): %s"
+                      (calendar-hebrew-date-string date))))
+       (let ((i (calendar-islamic-date-string date)))
+         (if (not (string-equal i ""))
+             (list (format "Islamic date (before sunset): %s" i))))
+       (let ((f (calendar-french-date-string date)))
+         (if (not (string-equal f ""))
+             (list (format "French Revolutionary date: %s" f))))
+       (list
+         (format "Mayan date: %s" (calendar-mayan-date-string date))))))))
+
+(defun calendar-mouse-date-menu (event)
+  "Pop up menu for selected date."
+  (interactive "e")
+  (let ((selection
+         (x-popup-menu
+          event
+          (if (calendar-event-to-date)
+              (list "Menu"
+                     (list
+                      (calendar-date-string
+                       (or (calendar-event-to-date)
+                           (error "Mouse is not on a date!"))
+                       t t)
+                      '("Diary entries" . calendar-mouse-view-diary-entries)
+                      '("Holidays" . calendar-mouse-holidays)
+                      '("Mark date" . calendar-set-mark)
+                      '("Sunrise/sunset" . calendar-mouse-sunrise/sunset)
+                      '("Other calendars" . calendar-mouse-print-dates)))
+            (list "Menu"
+                   (list
+                    (let ((m1 displayed-month)
+                          (y1 displayed-year)
+                          (m2 displayed-month)
+                          (y2 displayed-year))
+                      (increment-calendar-month m1 y1 -1)
+                      (increment-calendar-month m2 y2 1)
+                      (if (= y1 y2)
+                          (format "%s--%s, %d"
+                              (substring (calendar-month-name m1) 0 3)
+                              (substring (calendar-month-name m2) 0 3) y2)
+                        (format "%s, %d--%s, %d"
+                                (substring (calendar-month-name m1) 0 3) y1
+                                (substring (calendar-month-name m2) 0 3) y2)))
+                     '("Scroll forward" . scroll-calendar-left-three-months)
+                     '("Scroll backward" . scroll-calendar-right-three-months)
+                     '("Show diary" . show-all-diary-entries)
+                     '("Mark diary entries" . mark-diary-entries)
+                     '("List holidays" . list-calendar-holidays)
+                     '("Mark holidays" . mark-calendar-holidays)
+                     '("Unmark" . calendar-unmark)
+                     '("Lunar phases" . calendar-phases-of-moon)
+                     '("Exit calendar" . exit-calendar)))))))
+    (and selection (call-interactively selection))))
+
+(run-hooks 'cal-menu-load-hook)
+
+(provide 'cal-menu)
+
+;;; cal-menu.el ends here