;;; Menu related functions and commands
;;; Copyright (C) 1995 Kyle E. Jones
;;;
;;; Folders menu derived from
;;;     vm-folder-menu.el
;;;     v1.10; 03-May-1994
;;;     Copyright (C) 1994 Heiko Muenkel
;;;     email: muenkel@tnt.uni-hannover.de
;;;  Used with permission and my thanks.
;;;  Changed 18-May-1995, Kyle Jones
;;;     Cosmetic string changes, changed some variable names
;;;     and interfaced it with FSF Emacs via easymenu.el.
;;;   
;;; Tree menu code is essentially tree-menu.el with renamed functions
;;;     tree-menu.el
;;;     v1.20; 10-May-1994
;;;     Copyright (C) 1994 Heiko Muenkel
;;;     email: muenkel@tnt.uni-hannover.de
;;;
;;;  Changed 18-May-1995, Kyle Jones
;;;    Removed the need for the utils.el package and references thereto.
;;;    Changed file-truename calls to tree-menu-file-truename so
;;;    the calls could be made compatible with FSF Emacs 19's
;;;    file-truename function.
;;;  Changed 30-May-1995, Kyle Jones
;;;    Renamed functions: tree- -> vm-menu-hm-tree.
;;;  Changed 5-July-1995, Kyle Jones
;;;    Removed the need for -A in ls flags.
;;;    Some systems' ls don't support -A.
;;;
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 1, or (at your option)
;;; any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software
;;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

(provide 'vm-menu)

(defun vm-menu-fsfemacs-menus-p ()
  (and (vm-fsfemacs-19-p)
       (fboundp 'menu-bar-mode)))

(defun vm-menu-xemacs-menus-p ()
  (and (vm-xemacs-p)
       (fboundp 'set-buffer-menubar)))

;; defined again in vm-misc.el but we need it here for some
;; initializations.  The "noautoload" vm.elc won't work without
;; this.
(defun vm-fsfemacs-19-p ()
  (and (string-match "^19" emacs-version)
       (not (string-match "XEmacs\\|Lucid" emacs-version))))

(defvar vm-menu-folders-menu 
  '("Manipulate Folders"
    ["Make Folders Menu" vm-menu-hm-make-folder-menu vm-folder-directory])
  "VM folder menu list.")

(defconst vm-menu-folder-menu
  (list
   "Folder"
   (if (vm-fsfemacs-19-p)
       ["Manipulate Folders" ignore (ignore)]
     vm-menu-folders-menu)
   "---"
   ["Display Summary" vm-summarize t]
   ["Toggle Threading" vm-toggle-threads-display t]
   "---"
   ["Get New Mail" vm-get-new-mail (vm-menu-can-get-new-mail-p)]
   "---"
   ["Search" vm-isearch-forward vm-message-list]
   "---"
   ["Auto-Archive" vm-auto-archive-messages vm-message-list]
   ["Expunge" vm-expunge-folder vm-message-list]
   "---"
   ["Visit Folder" vm-visit-folder t]
   ["Revert Folder (back to disk version)" revert-buffer (vm-menu-can-revert-p)]
   ["Recover Folder (from auto-save file)" recover-file (vm-menu-can-recover-p)]
   ["Save" vm-save-folder (vm-menu-can-save-p)]
   ["Save As..." vm-write-file t]
   ["Quit" vm-quit-no-change t]
   ["Save & Quit" vm-quit t]
   "---"
   "---"
   ;; special string that marks the tail of this menu for
   ;; vm-menu-install-visited-folders-menu.
   "-------"
   ))

(defconst vm-menu-dispose-menu
  (let ((title (if (vm-menu-fsfemacs-menus-p)
		   (list "Dispose"
			 "Dispose"
			 "---"
			 "---")
		 (list "Dispose"))))
    (append
     title
     (list
      ["Reply to Author" vm-reply vm-message-list]
      ["Reply to All" vm-followup vm-message-list]
      ["Reply to Author (citing original)" vm-reply-include-text vm-message-list]
      ["Reply to All (citing original)" vm-followup-include-text vm-message-list]
      ["Forward" vm-forward-message vm-message-list]
      ["Resend" vm-resend-message vm-message-list]
      ["Retry Bounce" vm-resend-bounced-message vm-message-list]
      "---"
      ["File" vm-save-message vm-message-list]
      ["Delete" vm-delete-message vm-message-list]
      ["Undelete"	vm-undelete-message vm-message-list]
      ["Kill Current Subject" vm-kill-subject vm-message-list]
      ["Mark Unread" vm-unread-message vm-message-list]
      ["Edit" vm-edit-message vm-message-list]
      ["Print" vm-print-message vm-message-list]
      ["Pipe to Command" vm-pipe-message-to-command vm-message-list]
      "---"
      ["Burst Message as Digest" (vm-burst-digest "guess") vm-message-list]
      ))))

(defconst vm-menu-motion-menu
  '("Motion"
    ["Page Up" vm-scroll-backward vm-message-list]
    ["Page Down" vm-scroll-forward vm-message-list]
    "----"
    ["Beginning" vm-beginning-of-message vm-message-list]
    ["End" vm-end-of-message vm-message-list]
    "----"
    ["Expose/Hide Headers" vm-expose-hidden-headers vm-message-list]
    "----"
    "----"
    ["Next Message" vm-next-message t]
    ["Previous Message"	vm-previous-message t]
    "---"
    ["Next, Same Subject" vm-next-message-same-subject t]
    ["Previous, Same Subject" vm-previous-message-same-subject t]
    "---"
    ["Next Unread" vm-next-unread-message t]
    ["Previous Unread" vm-previous-unread-message t]
    "---"
    ["Next Message (no skip)" vm-next-message-no-skip t]
    ["Previous Message (no skip)" vm-previous-message-no-skip t]
    "---"
    ["Go to Last Seen Message" vm-goto-message-last-seen t]
    ["Go to Message" vm-goto-message t]
    ["Go to Parent Message" vm-goto-parent-message t]
    ))

(defconst vm-menu-virtual-menu
  '("Virtual"
    ["Visit Virtual Folder" vm-visit-virtual-folder t]
    ["Create Virtual Folder" vm-create-virtual-folder t]
    ["Apply Virtual Folder" vm-apply-virtual-folder t]
    "---"
    "---"
    ;; special string that marks the tail of this menu for
    ;; vm-menu-install-known-virtual-folders-menu.
    "-------"
    ))

(defconst vm-menu-send-menu
  '("Send"
    ["Compose" vm-mail t]
    ["Continue Composing" vm-continue-composing-message vm-message-list]
    ["Reply to Author" vm-reply vm-message-list]
    ["Reply to All" vm-followup vm-message-list]
    ["Reply to Author (citing original)" vm-reply-include-text vm-message-list]
    ["Reply to All (citing original)" vm-followup-include-text vm-message-list]
    ["Forward Message" vm-forward-message vm-message-list]
    ["Resend Message" vm-resend-message vm-message-list]
    ["Retry Bounced Message" vm-resend-bounced-message vm-message-list]
    ["Send Digest (RFC934)" vm-send-rfc934-digest vm-message-list]
    ["Send Digest (RFC1153)" vm-send-rfc1153-digest vm-message-list]
    ))

(defconst vm-menu-mark-menu
  '("Mark"
    ["Next Command Uses Marks..." vm-next-command-uses-marks
     :active vm-message-list
     :style radio
     :selected (eq last-command 'vm-next-command-uses-marks)]
    "----"
    ["Mark" vm-mark-message vm-message-list]
    ["Unmark" vm-unmark-message vm-message-list]
    ["Mark All" vm-mark-all-messages vm-message-list]
    ["Clear All Marks" vm-clear-all-marks vm-message-list]
    "----"
    ["Mark Same Subject" vm-mark-messages-same-subject vm-message-list]
    ["Unmark Same Subject" vm-unmark-messages-same-subject vm-message-list]
    ["Mark Same Author" vm-mark-messages-same-author vm-message-list]
    ["Unmark Same Author" vm-unmark-messages-same-author vm-message-list]
    ["Mark Messages Matching..." vm-mark-matching-messages vm-message-list]
    ["Unmark Messages Matching..." vm-unmark-matching-messages vm-message-list]
    ["Mark Thread Subtree" vm-mark-thread-subtree vm-message-list]
    ["Unmark Thread Subtree" vm-unmark-thread-subtree vm-message-list]
    ))

(defconst vm-menu-label-menu
  '("Label"
    ["Add Label" vm-add-message-labels vm-message-list]
    ["Remove Label" vm-delete-message-labels vm-message-list]
    ))

(defconst vm-menu-sort-menu
  '("Sort"
    ["By Multiple Fields..." vm-sort-messages vm-message-list]
    "---"
    ["By Date" (vm-sort-messages "date") vm-message-list]
    ["By Subject" (vm-sort-messages "subject") vm-message-list]
    ["By Author" (vm-sort-messages "author") vm-message-list]
    ["By Recipients" (vm-sort-messages "recipients") vm-message-list]
    ["By Lines" (vm-sort-messages "line-count") vm-message-list]
    ["By Bytes" (vm-sort-messages "byte-count") vm-message-list]
    "---"
    ["By Date (backward)" (vm-sort-messages "reversed-date") vm-message-list]
    ["By Subject (backward)" (vm-sort-messages "reversed-subject") vm-message-list]
    ["By Author (backward)" (vm-sort-messages "reversed-author") vm-message-list]
    ["By Recipients (backward)" (vm-sort-messages "reversed-recipients") vm-message-list]
    ["By Lines (backwards)" (vm-sort-messages "reversed-line-count") vm-message-list]
    ["By Bytes (backward)" (vm-sort-messages "reversed-byte-count") vm-message-list]
    "---"
    ["Toggle Threading" vm-toggle-threads-display t]
    "---"
    ["Revert to Physical Order" (vm-sort-messages "physical-order" t) vm-message-list]
    ))

(defconst vm-menu-help-menu
  '("Help!"
    ["What Now?" vm-help t]
    ["Describe Mode" describe-mode t]
    ["Revert Folder (back to disk version)" revert-buffer (vm-menu-can-revert-p)]
    ["Recover Folder (from auto-save file)" recover-file (vm-menu-can-recover-p)]
    "---"
    ["Save Folder & Quit" vm-quit t]
    ["Quit Without Saving" vm-quit-no-change t]
    ))

(defconst vm-menu-undo-menu
  ["Undo" vm-undo (vm-menu-can-undo-p)]
  )

(defconst vm-menu-emacs-button
  ["XEmacs" vm-menu-toggle-menubar t]
  )

(defconst vm-menu-vm-button
  ["VM" vm-menu-toggle-menubar t]
  )

(defconst vm-menu-mail-menu
  (let ((title (if (vm-menu-fsfemacs-menus-p)
		   (list "Mail Commands"
			 "Mail Commands"
			 "---"
			 "---")
		 (list "Mail Commands"))))
    (append
     title
     (list ["Send and Exit" vm-mail-send-and-exit (vm-menu-can-send-mail-p)]
	   ["Send, Keep Composing" vm-mail-send (vm-menu-can-send-mail-p)]
	   ["Cancel" kill-buffer t]
	   "----"
	   "Go to Field:"
	   "----"
	   ["      To:" mail-to t]
	   ["      Subject:" mail-subject	t]
	   ["      CC:" mail-cc t]
	   ["      BCC:" mail-bcc t]
	   ["      Reply-To:" mail-replyto t]
	   ["      Text" mail-text t]
	   "----"
	   ["Yank Original" vm-menu-yank-original vm-reply-list]
	   ["Fill Yanked Message" mail-fill-yanked-message t]
	   ["Insert Signature"	mail-signature t]
	   ["Insert File..." insert-file t]
	   ["Insert Buffer..."	insert-buffer t]
	   ))))

(defconst vm-menu-url-browser-menu
  (let ((title (if (vm-menu-fsfemacs-menus-p)
		   (list "Send URL to ..."
			 "Send URL to ..."
			 "---"
			 "---")
		 (list "Send URL to ...")))
	(w3 (cond ((fboundp 'w3-fetch-other-frame)
		   'w3-fetch-other-frame)
		  ((fboundp 'w3-fetch)
		   'w3-fetch)
		  (t 'w3-fetch-other-frame))))
    (append
     title
     (list (vector "Emacs W3"
		   (list 'vm-mouse-send-url-at-position
			 '(point)
			 (list 'quote w3))
		   (list 'fboundp (list 'quote w3)))
	   ["Mosaic"
	    (vm-mouse-send-url-at-position (point)
					   'vm-mouse-send-url-to-mosaic)
	    t]
	   ["Netscape"
	    (vm-mouse-send-url-at-position (point)
					   'vm-mouse-send-url-to-netscape)
	    t]))))

(defconst vm-menu-subject-menu
  (let ((title (if (vm-menu-fsfemacs-menus-p)
		   (list "Take Action on Subject..."
			 "Take Action on Subject..."
			 "---"
			 "---")
		 (list "Take Action on Subject..."))))
    (append
     title
     (list
      ["Kill Subject" vm-kill-subject vm-message-list]
      ["Next Message, Same Subject" vm-next-message-same-subject
       vm-message-list]
      ["Previous Message, Same Subject" vm-previous-message-same-subject
       vm-message-list]
      ["Mark Messages, Same Subject" vm-mark-messages-same-subject
       vm-message-list]
      ["Unmark Messages, Same Subject" vm-unmark-messages-same-subject
       vm-message-list]
      ["Virtual Folder, Matching Subject" vm-menu-create-subject-virtual-folder
       vm-message-list]
      ))))

(defconst vm-menu-author-menu
  (let ((title (if (vm-menu-fsfemacs-menus-p)
		   (list "Take Action on Author..."
			 "Take Action on Author..."
			 "---"
			 "---")
		 (list "Take Action on Author..."))))
    (append
     title
     (list
      ["Mark Messages, Same Author" vm-mark-messages-same-author
       vm-message-list]
      ["Unmark Messages, Same Author" vm-unmark-messages-same-author
       vm-message-list]
      ["Virtual Folder, Matching Author" vm-menu-create-author-virtual-folder
       vm-message-list]
      ))))

(defvar vm-menu-vm-menubar nil)

(defconst vm-menu-vm-menu
  (let ((title (if (vm-menu-fsfemacs-menus-p)
		   (list "VM"
			 "VM"
			 "---"
			 "---")
		 (list "VM"))))
    (append title
	    (list vm-menu-folder-menu
		  vm-menu-motion-menu
		  vm-menu-send-menu
		  vm-menu-mark-menu
		  vm-menu-label-menu
		  vm-menu-sort-menu
		  vm-menu-virtual-menu
		  vm-menu-undo-menu
		  vm-menu-dispose-menu
		  "---"
		  "---"
		  vm-menu-help-menu))))

(defvar vm-mode-menu-map nil)

(defun vm-menu-run-command (command &rest args)
  "Run COMMAND almost interactively, with ARGS.
call-interactive can't be used unfortunately, but this-command is
set to the command name so that window configuration will be done."
  (setq this-command command)
  (apply command args))

(defun vm-menu-can-revert-p ()
  (save-excursion
    (vm-check-for-killed-folder)
    (vm-select-folder-buffer)
    (and (buffer-modified-p) buffer-file-name)))

(defun vm-menu-can-recover-p ()
  (save-excursion
    (vm-check-for-killed-folder)
    (vm-select-folder-buffer)
    (and buffer-file-name
	 buffer-auto-save-file-name
	 (file-newer-than-file-p
	  buffer-auto-save-file-name
	  buffer-file-name))))

(defun vm-menu-can-save-p ()
  (save-excursion
    (vm-check-for-killed-folder)
    (vm-select-folder-buffer)
    (or (eq major-mode 'vm-virtual-mode)
	(buffer-modified-p))))

(defun vm-menu-can-get-new-mail-p ()
  (save-excursion
    (vm-check-for-killed-folder)
    (vm-select-folder-buffer)
    (or (eq major-mode 'vm-virtual-mode)
	(and (not vm-block-new-mail) (not vm-folder-read-only)))))

(defun vm-menu-can-undo-p ()
  (save-excursion
    (vm-check-for-killed-folder)
    (vm-select-folder-buffer)
    vm-undo-record-list))

(defun vm-menu-yank-original ()
  (interactive)
  (save-excursion
    (let ((mlist vm-reply-list))
      (while mlist
	(vm-yank-message (car mlist))
	(goto-char (point-max))
	(setq mlist (cdr mlist))))))

(defun vm-menu-can-send-mail-p ()
  (save-match-data
    (catch 'done
      (let ((headers '("to" "cc" "bcc" "resent-to" "resent-cc" "resent-bcc"))
	    h)
	(while headers
	  (setq h (mail-fetch-field (car headers)))
	  (and (stringp h) (string-match "[^ \t\n,]" h)
	       (throw 'done t))
	  (setq headers (cdr headers)))
	nil ))))

(defun vm-menu-create-subject-virtual-folder ()
  (interactive)
  (vm-select-folder-buffer)
  (setq this-command 'vm-create-virtual-folder)
  (vm-create-virtual-folder 'subject (regexp-quote
				      (vm-so-sortable-subject
				       (car vm-message-pointer)))))

(defun vm-menu-create-author-virtual-folder ()
  (interactive)
  (vm-select-folder-buffer)
  (setq this-command 'vm-create-virtual-folder)
  (vm-create-virtual-folder 'author (regexp-quote
				     (vm-su-from (car vm-message-pointer)))))

(defun vm-menu-xemacs-global-menubar ()
  (save-excursion
    (set-buffer (get-buffer-create "*scratch*"))
    current-menubar))

(defun vm-menu-fsfemacs-global-menubar ()
  (lookup-key (current-global-map) [menu-bar]))

(defun vm-menu-initialize-vm-mode-menu-map ()
  (if (null vm-mode-menu-map)
      (let ((map (make-sparse-keymap))
	    (dummy (make-sparse-keymap)))
	;; initialize all the vm-menu-fsfemacs-*-menu variables
	;; with the menus.
	(vm-easy-menu-define vm-menu-fsfemacs-help-menu (list dummy) nil
			     vm-menu-help-menu)
	(vm-easy-menu-define vm-menu-fsfemacs-dispose-menu (list dummy) nil
			     (cons "Dispose" (nthcdr 4 vm-menu-dispose-menu)))
	(vm-easy-menu-define vm-menu-fsfemacs-dispose-popup-menu (list dummy) nil
			     vm-menu-dispose-menu)
;;	(vm-easy-menu-define vm-menu-fsfemacs-undo-menu (list dummy) nil
;;			     (list "Undo" vm-menu-undo-menu))
	(vm-easy-menu-define vm-menu-fsfemacs-virtual-menu (list dummy) nil
			     vm-menu-virtual-menu)
	(vm-easy-menu-define vm-menu-fsfemacs-sort-menu (list dummy) nil
			     vm-menu-sort-menu)
	(vm-easy-menu-define vm-menu-fsfemacs-label-menu (list dummy) nil
			     vm-menu-label-menu)
	(vm-easy-menu-define vm-menu-fsfemacs-mark-menu (list dummy) nil
			     vm-menu-mark-menu)
	(vm-easy-menu-define vm-menu-fsfemacs-send-menu (list dummy) nil
			     vm-menu-send-menu)
	(vm-easy-menu-define vm-menu-fsfemacs-motion-menu (list dummy) nil
			     vm-menu-motion-menu)
;;	(vm-easy-menu-define vm-menu-fsfemacs-folders-menu (list dummy) nil
;;			     vm-menu-folders-menu)
	(vm-easy-menu-define vm-menu-fsfemacs-folder-menu (list dummy) nil
			     vm-menu-folder-menu)
	(vm-easy-menu-define vm-menu-fsfemacs-vm-menu (list dummy) nil
			     vm-menu-vm-menu)
	;; for mail mode
	(vm-easy-menu-define vm-menu-fsfemacs-mail-menu (list dummy) nil
			     vm-menu-mail-menu)
	;; subject menu
	(vm-easy-menu-define vm-menu-fsfemacs-subject-menu (list dummy) nil
			     vm-menu-subject-menu)
	;; author menu
	(vm-easy-menu-define vm-menu-fsfemacs-author-menu (list dummy) nil
			     vm-menu-author-menu)
	;; url browser menu
	(vm-easy-menu-define vm-menu-fsfemacs-url-browser-menu (list dummy) nil
			     vm-menu-url-browser-menu)
	;; block the global menubar entries in the map so that VM
	;; can take over the menubar if necessary.
	(define-key map [rootmenu] (make-sparse-keymap))
	(define-key map [rootmenu vm] (cons "VM" (make-sparse-keymap "VM")))
	(define-key map [rootmenu vm file] 'undefined)
	(define-key map [rootmenu vm files] 'undefined)
	(define-key map [rootmenu vm search] 'undefined)
	(define-key map [rootmenu vm edit] 'undefined)
	(define-key map [rootmenu vm options] 'undefined)
	(define-key map [rootmenu vm buffer] 'undefined)
	(define-key map [rootmenu vm tools] 'undefined)
	(define-key map [rootmenu vm help] 'undefined)
	;; 19.29 changed the tag for the Help menu.
	(define-key map [rootmenu vm help-menu] 'undefined)
	;; now build VM's menu tree.
	(let ((menu-alist
	       '((dispose
		  (cons "Dispose" vm-menu-fsfemacs-dispose-menu))
		 (folder
		  (cons "Folder" vm-menu-fsfemacs-folder-menu))
		 (help
		  (cons "Help!" vm-menu-fsfemacs-help-menu))
		 (label
		  (cons "Label" vm-menu-fsfemacs-label-menu))
		 (mark
		  (cons "Mark" vm-menu-fsfemacs-mark-menu))
		 (motion
		  (cons "Motion" vm-menu-fsfemacs-motion-menu))
		 (send
		  (cons "Send" vm-menu-fsfemacs-send-menu))
		 (sort
		  (cons "Sort" vm-menu-fsfemacs-sort-menu))
		 (virtual
		  (cons "Virtual" vm-menu-fsfemacs-virtual-menu))
		 (emacs
		  (cons "[Emacs]" 'vm-menu-toggle-menubar))
		 (undo
		  (cons "[Undo]" 'vm-undo))))
	      cons
	      (vec (vector 'rootmenu 'vm nil))
	      ;; menus appear in the opposite order that we
	      ;; define-key them.
	      (menu-list 
	       (if (consp vm-use-menus)
		   (reverse vm-use-menus)
		 (list 'help nil 'dispose 'undo 'virtual 'sort
		       'label 'mark 'send 'motion 'folder))))
	  (while menu-list
	    (if (null (car menu-list))
		nil;; no flushright support in FSF Emacs
	      (aset vec 2 (intern (concat "vm-menubar-"
					  (symbol-name
					   (car menu-list)))))
	      (setq cons (assq (car menu-list) menu-alist))
	      (if cons
		  (define-key map vec (eval (car (cdr cons))))))
	    (setq menu-list (cdr menu-list))))
	(setq vm-mode-menu-map map)
	(run-hooks 'vm-menu-setup-hook))))

(defun vm-menu-make-xemacs-menubar ()
  (let ((menu-alist
	 '((dispose . vm-menu-dispose-menu)
	   (folder . vm-menu-folder-menu)
	   (help . vm-menu-help-menu)
	   (label . vm-menu-label-menu)
	   (mark . vm-menu-mark-menu)
	   (motion . vm-menu-motion-menu)
	   (send . vm-menu-send-menu)
	   (sort . vm-menu-sort-menu)
	   (virtual . vm-menu-virtual-menu)
	   (emacs . vm-menu-emacs-button)
	   (undo . vm-menu-undo-menu)))
	cons
	(menubar nil)
	(menu-list vm-use-menus))
    (while menu-list
      (if (null (car menu-list))
	  (setq menubar (cons nil menubar))
	(setq cons (assq (car menu-list) menu-alist))
	(if cons
	    (setq menubar (cons (symbol-value (cdr cons)) menubar))))
      (setq menu-list (cdr menu-list)))
    (nreverse menubar) ))

(defun vm-menu-popup-mode-menu (event)
  (interactive "e")
  (cond ((and (vm-menu-xemacs-menus-p) vm-use-menus)
	 (set-buffer (window-buffer (event-window event)))
	 (and (event-point event) (goto-char (event-point event)))
	 (popup-mode-menu))
	((and (vm-menu-fsfemacs-menus-p) vm-use-menus)
	 (set-buffer (window-buffer (posn-window (event-start event))))
	 (goto-char (posn-point (event-start event)))
	 (vm-menu-popup-fsfemacs-menu event))))

(defun vm-menu-popup-context-menu (event)
  (interactive "e")
  ;; We should not need to do anything here for XEmacs.  The
  ;; default binding of mouse-3 is popup-mode-menu which does
  ;; what we want for the normal case.  For special contexts,
  ;; like when the mouse is over an URL, XEmacs has local keymap
  ;; support for extents.  Any context sensitive area should be
  ;; contained in an extent with a keymap that has mouse-3 bound
  ;; to a function that will pop up a context sensitive menu.
  (cond ((and (vm-menu-fsfemacs-menus-p) vm-use-menus)
	 (set-buffer (window-buffer (posn-window (event-start event))))
	 (goto-char (posn-point (event-start event)))
	 (let (o-list o menu (found nil))
	   (setq o-list (overlays-at (point)))
	   (while (and o-list (not found))
	     (cond ((overlay-get (car o-list) 'vm-url)
		    (setq found t)
		    (vm-menu-popup-url-browser-menu event))
		   ((setq menu (overlay-get (car o-list) 'vm-header))
		    (setq found t)
		    (vm-menu-popup-fsfemacs-menu event menu)))
	     (setq o-list (cdr o-list)))
	   (and (not found) (vm-menu-popup-fsfemacs-menu event))))))

;; to quiet the byte-compiler
(defvar vm-menu-fsfemacs-url-browser-menu)

(defun vm-menu-popup-url-browser-menu (event)
  (interactive "e")
  (cond ((and (vm-menu-xemacs-menus-p) vm-use-menus)
	 ;; Must select window instead of just set-buffer because
	 ;; popup-menu returns before the user has made a
	 ;; selection.  This will cause the command loop to
	 ;; resume which might undo what set-buffer does.
	 (select-window (event-window event))
	 (and (event-point event) (goto-char (event-point event)))
	 (popup-menu vm-menu-url-browser-menu))
	((and (vm-menu-fsfemacs-menus-p) vm-use-menus)
	 (set-buffer (window-buffer (posn-window (event-start event))))
	 (goto-char (posn-point (event-start event)))
	 (vm-menu-popup-fsfemacs-menu
	  event vm-menu-fsfemacs-url-browser-menu))))

;; to quiet the byte-compiler
(defvar vm-menu-fsfemacs-mail-menu)
(defvar vm-menu-fsfemacs-dispose-popup-menu)
(defvar vm-menu-fsfemacs-vm-menu)

(defun vm-menu-popup-fsfemacs-menu (event &optional menu)
  (interactive "e")
  (set-buffer (window-buffer (posn-window (event-start event))))
  (goto-char (posn-point (event-start event)))
  (let ((map (or menu mode-popup-menu))
	key command func)
    (setq key (x-popup-menu event map)
	  key (apply 'vector key)
          command (lookup-key map key)
	  func (and (symbolp command) (symbol-function command)))
    (cond ((null func) (setq this-command last-command))
	  ((symbolp func)
	   (setq this-command func)
	   (call-interactively this-command))
	  (t
	   (call-interactively command)))))

(defun vm-menu-mode-menu ()
  (if (vm-menu-xemacs-menus-p)
      (cond ((eq major-mode 'mail-mode)
	     vm-menu-mail-menu)
	    ((memq major-mode '(vm-mode vm-summary-mode vm-virtual-mode))
	     vm-menu-dispose-menu)
	    (t vm-menu-vm-menu))
    (cond ((eq major-mode 'mail-mode)
	   vm-menu-fsfemacs-mail-menu)
	  ((memq major-mode '(vm-mode vm-summary-mode vm-virtual-mode))
	   vm-menu-fsfemacs-dispose-popup-menu)
	  (t vm-menu-fsfemacs-vm-menu))))

(defun vm-menu-set-menubar-dirty-flag ()
  (cond ((vm-menu-xemacs-menus-p)
	 (set-menubar-dirty-flag))
	((vm-menu-fsfemacs-menus-p)
	 (force-mode-line-update))))

(defun vm-menu-toggle-menubar (&optional buffer)
  (interactive)
  (if buffer
      (set-buffer buffer)
    (vm-select-folder-buffer))
  (cond ((vm-menu-xemacs-menus-p)
	 (if (null (car (find-menu-item current-menubar '("XEmacs"))))
	     (set-buffer-menubar vm-menu-vm-menubar)
	   (set-buffer-menubar (copy-sequence (vm-menu-xemacs-global-menubar)))
	   (condition-case nil
	       (add-menu-button nil vm-menu-vm-button nil)
	     (void-function
	      (add-menu-item nil "VM" 'vm-menu-toggle-menubar t))))
	 (vm-menu-set-menubar-dirty-flag)
	 (vm-check-for-killed-summary)
	 (and vm-summary-buffer
	      (vm-menu-toggle-menubar vm-summary-buffer)))
	((vm-menu-fsfemacs-menus-p)
	 (if (not (eq (lookup-key vm-mode-map [menu-bar])
		      (lookup-key vm-mode-menu-map [rootmenu vm])))
	     (define-key vm-mode-map [menu-bar]
	       (lookup-key vm-mode-menu-map [rootmenu vm]))
	   (define-key vm-mode-map [menu-bar]
	     (make-sparse-keymap))
	   (define-key vm-mode-map [menu-bar vm]
	     (cons "[VM]" 'vm-menu-toggle-menubar)))
	 (vm-menu-set-menubar-dirty-flag))))

(defun vm-menu-install-menubar ()
  (cond ((vm-menu-xemacs-menus-p)
	 (setq vm-menu-vm-menubar (vm-menu-make-xemacs-menubar))
	 (set-buffer-menubar vm-menu-vm-menubar))
	((and (vm-menu-fsfemacs-menus-p)
	      ;; menus only need to be installed once for FSF Emacs
	      (not (fboundp 'vm-menu-undo-menu)))
	 (vm-menu-initialize-vm-mode-menu-map)
	 (define-key vm-mode-map [menu-bar]
	   (lookup-key vm-mode-menu-map [rootmenu vm])))))

(defun vm-menu-install-menubar-item ()
  (cond ((and (vm-menu-xemacs-menus-p) (vm-menu-xemacs-global-menubar))
	 (set-buffer-menubar (copy-sequence (vm-menu-xemacs-global-menubar)))
	 (add-menu nil "VM" (cdr vm-menu-vm-menu)))
	((and (vm-menu-fsfemacs-menus-p)
	      ;; menus only need to be installed once for FSF Emacs
	      (not (fboundp 'vm-menu-undo-menu)))
	 (vm-menu-initialize-vm-mode-menu-map)
	 (define-key vm-mode-map [menu-bar]
	   (lookup-key vm-mode-menu-map [rootmenu])))))

(defun vm-menu-install-vm-mode-menu ()
  ;; nothing to do here.
  ;; handled in vm-mouse.el
  (cond ((vm-menu-xemacs-menus-p)
	 t )
	((vm-menu-fsfemacs-menus-p)
	 t )))

(defun vm-menu-install-mail-mode-menu ()
  (cond ((vm-menu-xemacs-menus-p)
	 ;; mail-mode doesn't have mode-popup-menu bound to
	 ;; mouse-3 by default.  fix that.
	 (define-key vm-mail-mode-map 'button3 'popup-mode-menu)
	 ;; put menu on menubar also.
	 (if (vm-menu-xemacs-global-menubar)
	     (progn
	       (set-buffer-menubar
		(copy-sequence (vm-menu-xemacs-global-menubar)))
	       (add-menu nil "Mail" (cdr vm-menu-mail-menu))))
	 t )
	((vm-menu-fsfemacs-menus-p)
	 ;; I'd like to do this, but the result is a combination
	 ;; of the Emacs and VM Mail menus glued together.
	 ;; Poorly.
	 ;;(define-key vm-mail-mode-map [menu-bar mail]
	 ;;  (cons "Mail" vm-menu-fsfemacs-mail-menu))
	 (define-key vm-mail-mode-map [down-mouse-3]
	   'vm-menu-popup-mode-menu))))

(defun vm-menu-install-menus ()
  (cond ((consp vm-use-menus)
	 (vm-menu-install-vm-mode-menu)
	 (vm-menu-install-menubar)
	 (vm-menu-install-known-virtual-folders-menu))
	((eq vm-use-menus 1)
	 (vm-menu-install-vm-mode-menu)
	 (vm-menu-install-menubar-item)
	 (vm-menu-install-known-virtual-folders-menu))
	(t nil)))

(defun vm-menu-install-known-virtual-folders-menu ()
  (let ((folders (sort (mapcar 'car vm-virtual-folder-alist)
		       (function string-lessp)))
	(menu nil)
	tail
	;; special string indicating tail of Virtual menu
	(special "-------"))
    (while folders
      (setq menu (cons (vector "    "
			       (list 'vm-menu-run-command
				     ''vm-visit-virtual-folder (car folders))
			       t
			       (car folders))
		       menu)
	    folders (cdr folders)))
    (and menu (setq menu (nreverse menu)
		    menu (nconc (list "Visit:" "---") menu)))
    (setq tail (vm-member special vm-menu-virtual-menu))
    (if (and menu tail)
	(progn
	  (setcdr tail menu)
	  (vm-menu-set-menubar-dirty-flag)
	  (cond ((vm-menu-fsfemacs-menus-p)
		 (makunbound 'vm-menu-fsfemacs-virtual-menu)
		 (vm-easy-menu-define vm-menu-fsfemacs-virtual-menu
				      (list (make-sparse-keymap))
				      nil
				      vm-menu-virtual-menu)
		 (define-key vm-mode-menu-map [rootmenu vm vm-menubar-virtual]
		   (cons "Virtual" vm-menu-fsfemacs-virtual-menu))))))))

(defun vm-menu-install-visited-folders-menu ()
  (let ((folders (vm-delete-duplicates (copy-sequence vm-folder-history)))
	(menu nil)
	tail
	spool-files
	(i 0)
	;; special string indicating tail of Folder menu
	(special "-------"))
    (while (and folders (< i 10))
      (setq menu (cons (vector "    "
			       (list 'vm-menu-run-command
				     ''vm-visit-folder (car folders))
			       t
			       (car folders))
		       menu)
	    folders (cdr folders)
	    i (1+ i)))
    (and menu (setq menu (nreverse menu)
		    menu (nconc (list "Visit:" "---") menu)))
    (setq spool-files (vm-spool-files)
	  folders (cond ((and (consp spool-files)
			      (consp (car spool-files)))
			 (mapcar (function car) spool-files))
			((and (consp spool-files)
			      (stringp (car spool-files))
			      (stringp vm-primary-inbox))
			 (list vm-primary-inbox))
			(t nil)))
    (if (and menu folders)
	(nconc menu (list "---" "---")))
    (while folders
      (setq menu (nconc menu
			(list (vector "    "
				      (list 'vm-menu-run-command
					    ''vm-visit-folder (car folders))
				      t
				      (car folders))))
	    folders (cdr folders)))
    (setq tail (vm-member special vm-menu-folder-menu))
    (if (and menu tail)
	(progn
	  (setcdr tail menu)
	  (vm-menu-set-menubar-dirty-flag)
	  (cond ((vm-menu-fsfemacs-menus-p)
		 (makunbound 'vm-menu-fsfemacs-folder-menu)
		 (vm-easy-menu-define vm-menu-fsfemacs-folder-menu
				      (list (make-sparse-keymap))
				      nil
				      vm-menu-folder-menu)
		 (define-key vm-mode-menu-map [rootmenu vm vm-menubar-folder]
		   (cons "Folder" vm-menu-fsfemacs-folder-menu))))))))


;;; Muenkel Folders menu code

(defvar vm-menu-hm-no-hidden-dirs t
  "*Hidden directories are suppressed in the folder menus, if non nil.")

(defvar vm-menu-hm-hidden-file-list '("^\\..*" ".*\\.~[0-9]+~"))

(defun vm-menu-hm-delete-folder (folder)
  "Query deletes a folder."
  (interactive "fDelete folder: ")
  (if (file-exists-p folder)
      (if (y-or-n-p (concat "Delete the folder " folder " ? "))
	  (progn
	    (if (file-directory-p folder)
		(delete-directory folder)
	      (delete-file folder))
	    (message "Folder deleted.")
	    (vm-menu-hm-make-folder-menu)
	    (vm-menu-hm-install-menu)
	    )
	(message "Aborted"))
    (error "Folder %s does not exist." folder)
    (vm-menu-hm-make-folder-menu)
    (vm-menu-hm-install-menu)
    ))
	

(defun vm-menu-hm-rename-folder (folder)
  "Rename a folder."
  (interactive "fRename folder: ")
  (if (file-exists-p folder)
      (rename-file folder
		   (read-file-name (concat "Rename "
					   folder
					   " to ")
				   (directory-file-name folder)
				   folder))
    (error "Folder %s does not exist." folder))
  (vm-menu-hm-make-folder-menu)
  (vm-menu-hm-install-menu)
  )


(defun vm-menu-hm-create-dir (parent-dir)
  "Create a subdir in PARENT-DIR."
  (interactive "DCreate new directory in: ")
  (make-directory 
   (expand-file-name (read-file-name "Create directory in %s called: "
				     (concat parent-dir
					     "/")))
   t)
  (vm-menu-hm-make-folder-menu)
  (vm-menu-hm-install-menu)
  )


(defun vm-menu-hm-make-folder-menu ()
  "Makes a menu with the mail folders of the directory `vm-folder-directory'."
  (interactive)
  (vm-unsaved-message "Building folders menu...")
  (let ((folder-list (vm-menu-hm-tree-make-file-list vm-folder-directory))
	(inbox-list (if (listp (car vm-spool-files))
			(mapcar 'car vm-spool-files)
		      (list vm-primary-inbox))))
    (setq vm-menu-folders-menu
	  (cons "Manipulate Folders"
		(list (cons "Visit Inboxes  "
			    (vm-menu-hm-tree-make-menu 
			     inbox-list
			     'vm-visit-folder
			     t))
		      (cons "Visit Folder   "
			    (vm-menu-hm-tree-make-menu 
			     folder-list
			     'vm-visit-folder
			     t
			     vm-menu-hm-no-hidden-dirs
			     vm-menu-hm-hidden-file-list))
		      (cons "Save Message   "
			    (vm-menu-hm-tree-make-menu 
			     folder-list
			     'vm-save-message
			     t
			     vm-menu-hm-no-hidden-dirs
			     vm-menu-hm-hidden-file-list))
		      "----"
		      (cons "Delete Folder  "
			    (vm-menu-hm-tree-make-menu 
			     folder-list
			     'vm-menu-hm-delete-folder
			     t
			     nil
			     nil
			     t
			     ))
		      (cons "Rename Folder  "
			    (vm-menu-hm-tree-make-menu 
			     folder-list
			     'vm-menu-hm-rename-folder
			     t
			     nil
			     nil
			     t
			     ))
		      (cons "Make New Directory in..."
			    (vm-menu-hm-tree-make-menu 
			     (cons (list ".") folder-list)
			     'vm-menu-hm-create-dir
			     t
			     nil
			     '(".*")
			     t
			     ))
		      "----"
		      ["Rebuild Folders Menu" vm-menu-hm-make-folder-menu vm-folder-directory]
		      ))))
  (vm-unsaved-message "Building folders menu... done")
  (vm-menu-hm-install-menu))

(defun vm-menu-hm-install-menu ()
  (cond ((vm-menu-xemacs-menus-p)
	 (cond ((car (find-menu-item current-menubar '("VM")))
		(add-menu '("VM") "Folders"
			  (cdr vm-menu-folders-menu) "Motion"))
	       ((car (find-menu-item current-menubar
				     '("Folder" "Manipulate Folders")))
		(add-menu '("Folder") "Manipulate Folders"
			  (cdr vm-menu-folders-menu) "Motion"))))
	((vm-menu-fsfemacs-menus-p)
	 (vm-easy-menu-define vm-menu-fsfemacs-folders-menu
			      (list (make-sparse-keymap))
			      nil
			      vm-menu-folders-menu)
	 (define-key vm-mode-menu-map [rootmenu vm folder folders]
	   (cons "Manipulate Folders" vm-menu-fsfemacs-folders-menu)))))


;;; Muenkel tree-menu code

(defvar vm-menu-hm-tree-ls-flags "-aFLR" 
  "*A String with the flags used in the function
vm-menu-hm-tree-ls-in-temp-buffer for the ls command.
Be careful if you want to change this variable. 
The ls command must append a / on all files which are directories. 
The original flags are -aFLR.")


(defun vm-menu-hm-tree-ls-in-temp-buffer (dir temp-buffer)
"List the directory DIR in the TEMP-BUFFER."
  (switch-to-buffer temp-buffer)
  (erase-buffer)
  (let ((process-connection-type nil))
    (call-process "ls" nil temp-buffer nil vm-menu-hm-tree-ls-flags dir))
  (goto-char (point-min))
  (while (search-forward "//" nil t)
    (replace-match "/"))
  (goto-char (point-min))
  (while (re-search-forward "\\.\\.?/\n" nil t)
    (replace-match ""))
  (goto-char (point-min)))


(defvar vm-menu-hm-tree-temp-buffername "*tree*"
  "Name of the temp buffers in tree.")


(defun vm-menu-hm-tree-make-file-list-1 (root list)
  (let ((filename (buffer-substring (point) (progn
					      (end-of-line)
					      (point)))))
    (while (not (string= filename ""))
      (setq 
       list 
       (append
	list
	(list
	 (cond ((char-equal (char-after (- (point) 1)) ?/)
		;; Directory
		(setq filename (substring filename 0 (1- (length filename))))
		(save-excursion
		  (search-forward (concat root filename ":"))
		  (forward-line)
		  (vm-menu-hm-tree-make-file-list-1 (concat root filename "/")
						(list (vm-menu-hm-tree-menu-file-truename 
						       filename
						       root)))))
	       ((char-equal (char-after (- (point) 1)) ?*)
		;; Executable
		(setq filename (substring filename 0 (1- (length filename))))
		(vm-menu-hm-tree-menu-file-truename filename root))
	       (t (vm-menu-hm-tree-menu-file-truename filename root))))))
      (forward-line)
      (setq filename (buffer-substring (point) (progn
						 (end-of-line)
						 (point)))))
    list))


(defun vm-menu-hm-tree-menu-file-truename (file &optional root)
  (file-truename (expand-file-name file root)))

(defun vm-menu-hm-tree-make-file-list (dir)
  "Makes a list with the files and subdirectories of DIR.
The list looks like: ((dirname1 file1 file2) 
                      file3
                      (dirname2 (dirname3 file4 file5) file6))"
  (save-window-excursion
    (setq dir (expand-file-name dir))
    (if (not (string= (substring dir -1) "/"))
	(setq dir (concat dir "/")))
;;    (while (string-match "/$" dir)
;;      (setq dir (substring dir 0 -1)))
    (vm-menu-hm-tree-ls-in-temp-buffer dir
				 (generate-new-buffer-name 
				  vm-menu-hm-tree-temp-buffername))
    (let ((list nil))
      (setq list (vm-menu-hm-tree-make-file-list-1 dir nil))
      (kill-buffer (current-buffer))
      list)))


(defun vm-menu-hm-tree-hide-file-p (filename re-hidden-file-list)
  "t, if one of the regexps in RE-HIDDEN-FILE-LIST matches the FILENAME."
  (cond ((not re-hidden-file-list) nil)
	((string-match (car re-hidden-file-list) 
		       (vm-menu-hm-tree-menu-file-truename filename)))
	(t (vm-menu-hm-tree-hide-file-p filename (cdr re-hidden-file-list)))))


(defun vm-menu-hm-tree-make-menu (dirlist 
		       function 
		       selectable 
		       &optional 
		       no-hidden-dirs
		       re-hidden-file-list
		       include-current-dir)
  "Returns a menu list.
Each item of the menu list has the form 
 [\"subdir\" (FUNCTION \"dir\") SELECTABLE].
Hidden directories (with a leading point) are suppressed, 
if NO-HIDDEN-DIRS are non nil. Also all files which are
matching a regexp in RE-HIDDEN-FILE-LIST are suppressed.
If INCLUDE-CURRENT-DIR non nil, then an additional command
for the current directory (.) is inserted."
  (let ((subdir nil)
	(menulist nil))
    (while (setq subdir (car dirlist))
      (setq dirlist (cdr dirlist))
      (cond ((and (stringp subdir)
		  (not (vm-menu-hm-tree-hide-file-p subdir re-hidden-file-list)))
	     (setq menulist
		   (append menulist
			   (list
			    (vector (file-name-nondirectory subdir)
				    (list function subdir)
				    selectable)))))
	    ((and (listp subdir)
		  (or (not no-hidden-dirs)
		      (not (char-equal 
			    ?.
			    (string-to-char 
			     (file-name-nondirectory (car subdir))))))
		  (setq menulist
			(append 
			 menulist
			 (list
			  (cons (file-name-nondirectory (car subdir))
				(if include-current-dir
				    (cons
				     (vector "."
					     (list function
						   (car subdir))
					     selectable)
				     (vm-menu-hm-tree-make-menu (cdr subdir)
						     function
						     selectable
						     no-hidden-dirs
						     re-hidden-file-list
						     include-current-dir
						     ))
				  (vm-menu-hm-tree-make-menu (cdr subdir)
						  function
						  selectable
						  no-hidden-dirs
						  re-hidden-file-list
						  ))))))))
	    (t nil))
      )
    menulist
    )
  )
