option-edit.el 63.5 KB
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;;;;; -*-coding: iso-8859-1;-*-
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;;;;;
;;;;; $Id$
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;;;;; Copyright (C) 1991-2002  Lysator Academic Computer Association.
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;;;;;
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;;;;; This file is part of the LysKOM Emacs LISP client.
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;;;;; 
;;;;; LysKOM 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 2, or (at your option) 
;;;;; any later version.
;;;;; 
;;;;; LysKOM 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 LysKOM; see the file COPYING.  If not, write to
;;;;; Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
;;;;; or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
;;;;; MA 02139, USA.
;;;;;
;;;;; Please mail bug reports to bug-lyskom@lysator.liu.se. 
;;;;;
;;;; ================================================================
;;;; ================================================================
;;;;
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;;;; File: option-edit.el
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;;;;
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;;;; Customization for LysKOM
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;;;;


(setq lyskom-clientversion-long 
      (concat lyskom-clientversion-long
	      "$Id$\n"))

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(lyskom-external-function widget-default-format-handler)
(lyskom-external-function popup-mode-menu)

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;;; ======================================================================
;;; Require Per Abrahamsens widget package, version 0.991 or later.
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;;;

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;;; ======================================================================
;;; Global variables

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(defvar lyskom-widgets nil
  "List of widgets in the customize buffer.")

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(defvar lyskom-customize-buffer-format
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  '("\n"
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    (lyskom bold centered)
    "\n\n"
    lyskom-doc
    "\n\n"
    [kom-customize-format]
    "\n\n"
    section
    (look-and-feel-misc bold centered)
    section
    "\n"
    [kom-default-language]
    [kom-show-namedays]
    [kom-show-week-number]
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    [kom-print-relative-dates]
    [kom-print-seconds-in-time-strings]
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    "\n"
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    [kom-extended-status-information]
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    [kom-auto-list-faqs]
    [kom-auto-review-faqs]
    "\n"
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    [kom-idle-hide]
    [kom-show-where-and-what]
    [kom-show-since-and-when]
    "\n"
    [kom-friends]
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    [kom-morons]
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    "\n"
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    [kom-show-unread-in-frame-title]
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    [kom-presence-messages-in-echo-area]
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    [kom-presence-messages-in-buffer]
    "\n"
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    [kom-text-no-prompts]
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    [kom-keyboard-menu-immediate-selection]
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    [kom-page-before-command]
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    [kom-deferred-printing]
    [kom-max-buffer-size]
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    [kom-trim-buffer-minimum]
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    [kom-bury-buffers]
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    [kom-keep-alive-interval]
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    "\n"
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    [kom-agree-text]
    [kom-mercial]
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    "\n"
    [kom-user-prompt-format]
    [kom-user-prompt-format-executing]
    [kom-anonymous-prompt-format]
    [kom-anonymous-prompt-format-executing]
    [kom-enabled-prompt-format]
    [kom-enabled-prompt-format-executing]
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    "\n\n"
    section
    (window-locations bold centered)
    section
    "\n"
    (windows-where bold centered)
    "\n"
    windows-doc
    "\n\n"
    [kom-customize-in-window]
    [kom-edit-filters-in-window]
    [kom-prioritize-in-window]
    [kom-list-membership-in-window]
    [kom-write-texts-in-window]
    [kom-view-commented-in-window]
    [kom-personal-messages-in-window]
    
    "\n\n"
    section
    (audio-cues bold centered)
    section
    "\n"
    [kom-audio-player]
    "\n"
    (audio-cues-when bold centered)
    "\n"
    audio-cues-doc
    "\n\n"
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    [kom-ding-on-priority-break]
    [kom-ding-on-new-letter]
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    [kom-ding-on-wait-done]
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    [kom-ding-on-no-subject]
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    [kom-ding-on-common-messages]
    [kom-ding-on-group-messages]
    [kom-ding-on-personal-messages]
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    "\n"
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    [kom-silent-ansaphone]
    "\n\n"
    section
    (reading bold centered)
    section
    "\n"
    [kom-default-session-priority]
    [kom-print-number-of-unread-on-entrance]
    [kom-allow-incompleteness]
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    [kom-permissive-completion]
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    [kom-complete-numbers-before-names]
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    [kom-continuous-scrolling]
    [kom-inhibit-typeahead]
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    [kom-confirm-add-recipients]
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    "\n"
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    [kom-higher-priority-breaks]
    [kom-review-priority]
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    [kom-server-priority]
    [kom-server-priority-breaks]
    "\n"
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    [kom-read-depth-first]
    [kom-reading-puts-comments-in-pointers-last]
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    [kom-show-footnotes-immediately]
    [kom-follow-comments-outside-membership]
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    [kom-follow-attachments]
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    [kom-mark-read-texts-as-read-in-new-recipient]
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    [kom-created-texts-are-read]
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    [kom-created-texts-are-saved]
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    [kom-review-uses-cache]
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    [kom-review-marks-texts-as-read]
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    "\n"
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    [kom-saved-file-name]
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    [kom-default-mark]
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    [kom-symbolic-marks-alist]
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    [kom-membership-default-priority]
    [kom-membership-default-placement]
    [kom-unsubscribe-makes-passive]
    [kom-postpone-default]
    "\n"
    [kom-autowrap]
    [kom-show-author-at-end]
    [kom-show-creating-software]
    [kom-show-imported-importer]
    [kom-show-imported-external-recipients]
    [kom-show-imported-envelope-sender]
    [kom-smileys]
    [kom-w3-simplify-body]
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    [kom-format-html-authors]
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    "\n"
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    [kom-max-overlays]
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    [kom-highlight-first-line]
    [kom-highlight-dashed-lines]
    [kom-highlight-text-body]
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    [kom-async-highlight-dashed-lines]
    [kom-async-highlight-text-body]
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    "\n"
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    [kom-dashed-lines]
    [kom-long-lines]
    [kom-text-footer-format]
    [kom-text-header-dash-length]
    [kom-text-footer-dash-length]
    "\n"
    [kom-truncate-threshold]
    [kom-truncate-show-lines]
    "\n"
    [kom-ignore-message-senders]
    [kom-ignore-message-recipients]
    [kom-show-personal-message-date]
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    [kom-filter-outgoing-messages]
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    "\n\n"
    section
    (writing bold centered)
    section
    "\n"
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    [kom-edit-hide-add-button]
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    [kom-cite-string]
    [kom-ispell-dictionary]
    "\n"
    sending-doc
    "\n\n"
    [kom-confirm-multiple-recipients]
    [kom-check-commented-author-membership]
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    [kom-dont-check-commented-authors]
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    [kom-check-for-new-comments]

    "\n\n"
    section
    (urls bold centered)
    section
    "\n"
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    [kom-url-transformation-rules]
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    [kom-url-viewer-preferences]
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    [kom-windows-browser-command]
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    [kom-mosaic-command]
    [kom-netscape-command]
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    [kom-galeon-command]
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    [kom-my-bugzilla]
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    "\n\n"
    section
    (personal-messages bold centered)
    section
    "\n"
    [kom-show-personal-messages-in-buffer]
    [kom-pop-personal-messages]
    [kom-default-message-recipient]
    "\n"
    (automatic-replies bold centered)
    "\n"
    [kom-ansaphone-record-messages]
    [kom-ansaphone-show-messages]
    "\n"
    [kom-ansaphone-default-reply]
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    "\n"
    [kom-ansaphone-replies]
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    "\n\n"
    section
    (remote-control bold centered)
    section
    "\n"
    [kom-remote-control]
    [kom-self-control]
    "\n"
    [kom-remote-controllers]
    "\n\n"
    section
    (hooks bold centered)
    section
    "\n"
    [kom-login-hook]
    [kom-do-when-done]
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    ))

;;; ======================================================================
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;;;     User functions
;;;

(defun lyskom-customize-apply ()
  "Set the variables in the LysKOM buffer according to their values in the
customize buffer but do not save them to the server."
  (interactive)
  (let ((tmp lyskom-widgets))
    (save-excursion
      (set-buffer lyskom-buffer)
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      (when (listp kom-dont-read-saved-variables)
        (setq kom-dont-read-saved-variables nil))
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      (while tmp
        (set (car (car tmp))
             (widget-value (cdr (car tmp))))
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        (when (not (widget-value (widget-get (cdr (car tmp)) 
                                             ':lyskom-storage-widget)))
          (set-default (car (car tmp)) (widget-value (cdr (car tmp))))
          (when (and (listp kom-dont-read-saved-variables)
                     (or (memq (car (car tmp)) lyskom-elisp-variables)
                         (memq (car (car tmp)) lyskom-global-boolean-variables)
                         (memq (car (car tmp)) lyskom-global-non-boolean-variables)))
            (setq kom-dont-read-saved-variables 
                  (cons (car (car tmp)) kom-dont-read-saved-variables))))
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        (setq tmp (cdr tmp))))))

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(eval-when-compile (defvar save-options-init-file nil))

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(defun lyskom-customize-send ()
  "Save variables to the server"
  (save-excursion
    (set-buffer lyskom-buffer)
    (lyskom-save-options (current-buffer)
                         (lyskom-get-string 'saving-settings)
                         (lyskom-get-string 'saving-settings-done)
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                         (lyskom-get-string 'could-not-save-options))
    (let ((var-list nil))
      (mapcar 
       (function 
        (lambda (e)
          (when (and (vectorp e)
                     (symbolp (elt e 0))
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                     (or 
                      (and (not (memq (elt e 0) lyskom-elisp-variables))
                           (not (memq (elt e 0) lyskom-global-boolean-variables))
                           (not (memq (elt e 0) lyskom-global-non-boolean-variables)))
                      (memq (elt e 0) kom-dont-read-saved-variables))
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                     (boundp (elt e 0)))
            (setq var-list (cons (cons (elt e 0)
                                       (symbol-value (elt e 0)))
                                 var-list)))))
       lyskom-customize-buffer-format)
      
      (let* ((actual-save-options-init-file
              (or (and (boundp 'save-options-init-file)
                       save-options-init-file)
                  (and (not (equal user-init-file ""))
                       user-init-file)
                  (and (eq system-type 'ms-dos)
                       (concat "~" (user-login-name) "/_emacs"))
                  (concat "~" (user-login-name) "/.emacs")))
             (init-output-buffer (find-file-noselect
                                  actual-save-options-init-file))
             (init-output-marker nil))

        (save-excursion
          (set-buffer init-output-buffer)
          ;;
          ;; Find and delete the previously saved data, and position to write.
          ;;
          (goto-char (point-min))
          (if (re-search-forward "^;;; LysKOM Settings *\n" nil 'move)
              (let ((p (match-beginning 0)))
                (goto-char p)
                (or (re-search-forward
                     "^;;; End of LysKOM Settings *\\(\n\\|\\'\\)"
                     nil t)
                    (error "can't find END of saved state in .emacs"))
                (delete-region p (match-end 0)))
            (goto-char (point-max))
            (insert "\n"))
          (setq init-output-marker (point-marker)))

    (let ((standard-output init-output-marker))
      (princ ";;; LysKOM Settings\n")
      (princ ";;; =====================\n")
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      (mapcar (lambda (x)
                (princ (format "(setq-default %S %s%S)\n" 
                               (car x)
                               (cond ((eq (cdr x) t) "")
                                     ((null (cdr x)) "")
                                     ((symbolp (cdr x)) "'")
                                     ((listp (cdr x)) "'")
                                     (t ""))
                               (cdr x))))
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       var-list)
      (princ ";;; ============================\n")
      (princ ";;; End of LysKOM Settings\n"))

    (set-marker init-output-marker nil)
    (save-excursion
      (set-buffer init-output-buffer)
      (save-buffer))
    ))))
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(defun lyskom-customize-save ()
  "Apply changes and save them to the server."
  (interactive)
  (lyskom-customize-apply)
  (lyskom-customize-send))

(defun lyskom-customize-quit ()
  "Quit the customize buffer without saving"
  (interactive)
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  (let ((buf (current-buffer)))
    (lyskom-undisplay-buffer buf)
    (kill-buffer buf)))
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(defun lyskom-customize-save-and-quit ()
  "Save and quit the customize buffer"
  (interactive)
  (lyskom-customize-apply)
  (lyskom-customize-send)
  (lyskom-customize-quit))

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(defun lyskom-customize-help ()
  (interactive)
  (message (lyskom-get-string 'customize-help)))

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(defun lyskom-widget-click (event)
  (interactive "e")
  (let ((pos (event-point event)))
    (if (and pos (widget-at pos))
        (widget-button-click event)
      (popup-mode-menu))))

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(defun kom-customize ()
  "Open the customize buffer"
  (interactive)
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  (let ((buf (lyskom-get-buffer-create 'customize
                                       (lyskom-format
                                        (lyskom-custom-string 'buffer-name)
                                        lyskom-server-name)
                                       t)))
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    (unwind-protect
        (progn
          (lyskom-start-of-command 'kom-customize)
           (save-excursion
             (set-buffer buf)
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             (kill-all-local-variables)
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             (make-local-variable 'lyskom-widgets)
             (setq lyskom-widgets nil)
             (let ((inhibit-read-only t))
               (erase-buffer))
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             (use-local-map lyskom-customize-map)
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             (condition-case nil
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                 (lyskom-copy-face 'kom-active-face 'widget-button-face)
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               (error nil))
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             (mapcar 'lyskom-custom-insert lyskom-customize-buffer-format)
             (widget-setup)
             (mapcar (function
                      (lambda (variable)
                        (widget-value-set (cdr variable)
                                          (save-excursion
                                            (set-buffer lyskom-buffer)
                                            (symbol-value (car variable))))))
                     lyskom-widgets)
             (widget-setup))
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           (lyskom-display-buffer buf))
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      (save-excursion
        (set-buffer lyskom-buffer)
        (lyskom-end-of-command)))
    (goto-char (point-min))))

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;;; ============================================================
;;; Non-user functions
;;;

(defun lyskom-custom-insert (w)
  (cond ((symbolp w)
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         (widget-insert (substitute-command-keys (lyskom-custom-string w))))
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        ((listp w)
         (let ((start (point))
               (end nil)
               (inhibit-read-only t))
           (widget-insert (lyskom-custom-string (car w)))
           (setq end (point))
           (mapcar (function
                    (lambda (fn)
                      (funcall (intern (concat "lyskom-custom-insert-"
                                               (symbol-name fn)))
                               start end)))
                   (cdr w))))
        ((stringp w)
         (widget-insert w))
        ((vectorp w)
         (setq lyskom-widgets (cons (cons (aref w 0)
                                          (lyskom-create-widget (aref w 0)))
                                    lyskom-widgets)))))

(defun lyskom-custom-insert-bold (s e)
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  (add-text-properties s e (list 'face 'bold 'end-closed nil)))
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(defun lyskom-custom-insert-centered (s e)
  (save-excursion (goto-char s)
                  (center-line 1)))


(defun lyskom-custom-get-value (var)
  (save-excursion
    (set-buffer lyskom-buffer)
    (symbol-value var)))

(defun lyskom-custom-string (s)
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  (lyskom-get-string s 'lyskom-custom-strings))
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(defvar lyskom-custom-variables-missing '(kom-permanent-filter-list
                                          kom-quit-hook)
  "List of user variables not in lyskom-custom-variables.")

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(defvar lyskom-custom-variables
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  '(
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    (kom-max-overlays (choice ((number nil
                                       :tag limited-number
                                       :format "%[%t%] (%v)")
                               (const (unlimited-number nil)))))
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    (kom-highlight-first-line (toggle (on off)))
    (kom-highlight-dashed-lines (toggle (on off)))
    (kom-highlight-text-body (toggle (on off)))
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    (kom-async-highlight-dashed-lines (toggle (on off)))
    (kom-async-highlight-text-body (toggle (on off)))
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    (kom-personal-messages-in-window (open-window))
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    (kom-write-texts-in-window (open-window))
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    (kom-list-membership-in-window (open-window))
    (kom-edit-filters-in-window (open-window))
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    (kom-prioritize-in-window (open-window))
    (kom-customize-in-window (open-window))
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    (kom-view-commented-in-window (open-window))
    (kom-edit-filters-in-window (open-window))
    (kom-list-membership-in-window (open-window))
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    (kom-customize-format (choice ((const (long-format long))
                                   (const (short-format short)))))
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    (kom-default-language (language-choice))
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    (kom-user-prompt-format (string))
    (kom-user-prompt-format-executing (string))
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    (kom-anonymous-prompt-format (string))
    (kom-anonymous-prompt-format-executing (string))
    (kom-enabled-prompt-format (string))
    (kom-enabled-prompt-format-executing (string))
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    (kom-cite-string (string))
    (kom-created-texts-are-read (toggle (yes no)))
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    (kom-mark-read-texts-as-read-in-new-recipient (toggle (yes no)))
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    (kom-review-uses-cache (toggle (yes no)))
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    (kom-review-marks-texts-as-read (toggle (yes no)))
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    (kom-created-texts-are-saved (choice ((const (no nil))
                                          (file nil :tag to-file))))
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    (kom-default-mark (choice ((number (0 255) 
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                                       :tag selected-mark
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                                       :format "%[%t%] (%v)"
                                       :size 0)
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                               (const (ask nil)))))
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    (kom-symbolic-marks-alist (repeat (mark-association
                                       nil
                                       :tag symbolic-mark-association
                                       :mark-key-prompt symbolic-mark-name
                                       :mark-value-prompt mark-type-to-assoc)
                                      :indent 4))
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    (kom-reading-puts-comments-in-pointers-last (toggle (after before)))
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    (kom-autowrap (choice ((const (on t))
                           (const (off nil))
                           (number nil :tag max-text-length))))
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    (kom-auto-list-faqs (toggle (on off)))
    (kom-auto-review-faqs (toggle (on off)))
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    (kom-dashed-lines (toggle (on off)))
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    (kom-show-author-at-end (toggle (on off)))
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    (kom-truncate-threshold (choice ((const (off nil))
				     (number nil :tag truncate-threshold-lines))))
    (kom-truncate-show-lines (number nil))

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    (kom-print-number-of-unread-on-entrance (toggle (yes no)))
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    (kom-presence-messages-in-echo-area
     (choice ((const (on t))
              (const (friends friends))
              (repeat (person nil :tag name)
                      :indent 4
                      :tag some-persons
                      :menu-tag some-persons))))
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    (kom-presence-messages-in-buffer
     (choice ((const (on t))
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              (const (friends friends))
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              (repeat (person nil :tag name)
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                      :indent 4
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                      :tag some-persons
                      :menu-tag some-persons))))
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    (kom-show-where-and-what (toggle (yes no)))
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    (kom-show-since-and-when (toggle (yes no)))
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    (kom-idle-hide (number))
    (kom-show-footnotes-immediately (toggle (yes no)))
    (kom-follow-comments-outside-membership (toggle (yes no)))
    (kom-read-depth-first (toggle (depth-first time-order)))
    (kom-continuous-scrolling  (toggle (on off)))
    (kom-deferred-printing (toggle (on off)))
    (kom-higher-priority-breaks (choice ((const (express-break express))
                                         (const (break t))
                                         (const (no-break nil)))))
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    (kom-server-priority (number))
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    (kom-server-priority-breaks (choice ((const (express-server-break express))
                                         (const (express-server-letters-break express-letters))
                                         (const (server-break t))
                                         (const (letters-server-break letters))
                                         (const (after-conf-server-break after-conf))
                                         (const (after-conf-letters-server-break after-conf-letters))
                                         (const (when-done-server-break when-done))
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                                         (const (no-server-break nil)))))
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    (kom-login-hook (repeat (command nil :tag command)
                            :indent 4))
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    (kom-do-when-done (repeat (choice ((command nil :tag command)
                                       (kbd-macro nil :tag kbd-macro))
                                      :tag execute
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                                      :help-echo select-what-to-execute
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                                      :format "%[%t%] %v")
                              :indent 4))
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    (kom-page-before-command (choice ((const (page-none nil))
                                      (const (page-all t))
                                      (repeat (command nil
                                                       :tag command)
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                                              :indent 4
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                                              :tag page-some
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                                              :menu-tag page-some
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                                              :format "%[%t%] %v"
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                                              :value (kom-view-next-text)))
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                                     :format "%[%t%] %v"))
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    (kom-permissive-completion (noggle (on off)))
    (kom-membership-default-priority
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     (choice ((const (ask-every-time ask))
              (const (ask-every-time nil))
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              (number (0 255)
                      :tag fixed-priority 
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                      :help-echo select-priority
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                      :format "%[%t%] (%v)"
                      :size 0))))
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    (kom-show-personal-messages-in-buffer
     (choice ((const (messages-in-lyskom-buffer t))
              (const (discard-messages nil))
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              (string nil :tag in-named-buffer :help-echo select-buffer))))
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    (kom-pop-personal-messages (toggle (yes no)))
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    (kom-ding-on-new-letter (ding))
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    (kom-ding-on-priority-break (ding))
    (kom-ding-on-wait-done (ding))
    (kom-ding-on-common-messages (ding))
    (kom-ding-on-group-messages (ding))
    (kom-ding-on-personal-messages (ding))
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    (kom-ding-on-no-subject (ding))
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    (kom-audio-player (file))
    (kom-default-message-recipient 
     (choice ((const (everybody-rcpt everybody))
              (const (group-rcpt group))
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              (const (sender-rcpt sender))
              (const (last-recipient-recpt last-recipient)))))
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    (kom-filter-outgoing-messages (noggle (yes no)))
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    (kom-friends (repeat (person nil :tag name) :indent 4))
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    (kom-morons (repeat (person nil :tag name) :indent 4))
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    (kom-url-viewer-preferences (repeat (url-viewer nil :tag viewer-program)
                                        :indent 4))
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    (kom-windows-browser-command (file))
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    (kom-mosaic-command (file))
    (kom-netscape-command (file))
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    (kom-galeon-command (file))
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    (kom-confirm-multiple-recipients
     (choice ((const (dont-check nil))
              (const (check-before-open before))
              (const (check-before-send after)
                     :match (lambda (w v) (and v (not (eq v 'before))))))))
    (kom-check-commented-author-membership (toggle (yes no)))
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    (kom-check-for-new-comments (toggle (yes no)))
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    (kom-inhibit-typeahead (noggle (yes no)))
    (kom-max-buffer-size (choice ((const (no-size-limit nil))
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                                  (number nil 
                                          :tag max-size-in-bytes
                                          :help-echo select-buffer-size))))
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    (kom-ansaphone-record-messages (toggle (yes no)))
    (kom-ansaphone-show-messages (toggle (yes no)))
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    (kom-ansaphone-default-reply (string nil :format "%[%t%]\n%v"))
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    (kom-remote-control (toggle (on off)))
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    (kom-remote-controllers (repeat (person nil :tag name)
                                    :indent 4))
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    (kom-self-control (toggle (yes no)))
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    (kom-ispell-dictionary (ispell-dictionary))
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    (kom-show-namedays (choice ((const (off nil))
                                (const (default-namedays t))
                                (nameday nil :tag specific-namedays))))
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    (kom-show-week-number (toggle (on off)))
    (kom-membership-default-placement (choice ((const (last last))
                                               (const (first first))
                                               (number nil
                                                       :tag specific-placement
                                                       ))))
    (kom-show-imported-importer (toggle (on off)))
    (kom-show-imported-envelope-sender (toggle (on off)))
    (kom-show-imported-external-recipients (toggle (on off)))
    (kom-agree-text (choice ((string nil :tag a-string)
                             (repeat (string nil
                                             :tag a-string
                                             :format "%[%t%] `%v'\n")
                                     :indent 4
                                     :tag some-string
                                     :menu-tag some-string))))
    (kom-silent-ansaphone (noggle (on off)))
    (kom-default-session-priority (choice ((const (unspecified nil))
                                           (number nil
                                                   :tag priority))))
    (kom-unsubscribe-makes-passive (toggle (on off)))
    (kom-review-priority (choice ((const (same-as-conf nil))
                                  (number nil :tag fixed-priority))))
    (kom-show-creating-software (toggle (on off)))
    (kom-text-footer-format (choice ((const (default-format nil))
                                     (string nil :tag custom-format))))
    (kom-long-lines (toggle (on off)))
    (kom-postpone-default (number))
    (kom-allow-incompleteness (toggle (on off)))
    (kom-smileys (toggle (on off)))
    (kom-ignore-message-senders (repeat (person nil :tag name)
                                    :indent 4))
    (kom-ignore-message-recipients (repeat (person nil 
                                                   :tag name
                                                   :lyskom-predicate (pers conf))
                                    :indent 4))
    (kom-text-header-dash-length (number))
    (kom-text-footer-dash-length (number))
    (kom-show-personal-message-date (toggle (on off)))
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    (kom-mercial (string))
    (kom-w3-simplify-body (toggle (on off)))
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    (kom-format-html-authors (repeat (cons ((choice ((person nil :tag some-person :lyskom-predicate (pers))
                                                     (const (all-others t) :format "%t\n"))
                                                    :format "%[%v%]")
                                            (toggle (yes no) :tag format-html)))))
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    (kom-bury-buffers (toggle (on off)))
    (kom-ansaphone-replies (ansaphone))
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    (kom-complete-numbers-before-names (toggle (on off)))
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    (kom-keep-alive-interval (number))
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    (kom-text-no-prompts (repeat (cons ((command nil :tag command :format "%[%t%]: %v")
                                        (toggle (yes no)  :tag prompt-for-text-no :format "%[%t%]: %v")
                                        ))))
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    (kom-saved-file-name (file))
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    (kom-follow-attachments (toggle (yes no)))
    (kom-show-unread-in-frame-title (toggle (yes no)))
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    (kom-confirm-add-recipients (toggle (yes no)))
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    (kom-trim-buffer-minimum (number))
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    (kom-dont-check-commented-authors (repeat (person nil 
                                                      :tag name) :indent 4))
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    (kom-print-relative-dates (toggle (yes no)))
    (kom-print-seconds-in-time-strings (toggle (yes no)))
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    (kom-extended-status-information (toggle (yes no)))
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    (kom-edit-hide-add-button (noggle (yes no)))
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    (kom-keyboard-menu-immediate-selection (noggle (yes no)))
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    (kom-url-transformation-rules (repeat (cons ((string nil :tag url-transform-regexp)
                                                 (string nil :tag url-transform-newtext)))))
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    (kom-my-bugzilla (string))
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))

(defvar lyskom-widget-functions 
  '((toggle . lyskom-toggle-widget)
    (noggle . lyskom-toggle-widget-inverse)
    (ding   . lyskom-ding-widget)
    (choice . lyskom-choice-widget)
    (string . lyskom-string-widget)
    (number . lyskom-number-widget)
    (const .  lyskom-item-widget)
    (repeat . lyskom-repeat-widget)
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    (cons . lyskom-cons-widget)
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    (nameday . lyskom-nameday-widget)
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    (kbd-macro . lyskom-kbd-macro-widget)
    (url-viewer . lyskom-url-viewer-widget)
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    (ispell-dictionary . lyskom-ispell-dictionary-widget)
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    (open-window . lyskom-open-window-widget)
    (command . lyskom-command-widget)
    (person . lyskom-person-widget)
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    (language-choice . lyskom-language-widget)
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    (file . lyskom-file-widget)
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    (ansaphone . lyskom-ansaphone-reply-widget)
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    (mark-association . lyskom-mark-association-widget)
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))

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(defun lyskom-make-menu-tag (str)
  "Make a menu tag from the string STR."
  (if (string-match "\\(.*\\):\\s-*" str)
      (match-string 1 str)
    str))

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(defun lyskom-create-widget (variable)
  (let* ((el (assq variable lyskom-custom-variables))
         (dummy (or el (error "Unknown variable: %S" variable)))
         (spec (lyskom-widget-convert-specification (car (cdr el))))
         (tag-sym (intern (concat (symbol-name variable) "-tag")))
         (doc-sym (intern (concat (symbol-name variable) "-doc")))
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         (help-sym (intern (concat (symbol-name variable) "-help")))
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         (value (save-excursion (set-buffer lyskom-buffer)
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                                (symbol-value variable)))
         (storage-widget nil))

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    (lyskom-ignore value help-sym dummy)       ; Are they ever used?
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    (setq storage-widget
          (condition-case nil
              (prog1
                (widget-create 'checkbox
                               ':value (and (not (memq variable kom-dont-read-saved-variables))
                                            (or (memq variable lyskom-elisp-variables)
                                                (memq variable lyskom-global-boolean-variables)
                                                (memq variable lyskom-global-non-boolean-variables)))
                               ':args variable
                               ':format "%[%v%]"
                               ':help-echo (lyskom-custom-string 'variable-type-help))
                (widget-insert " "))
            (error nil)))

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    (setq spec 
          (cons (car spec)
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                (append
                 (list ':tag
                       (lyskom-custom-string tag-sym)
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                       ':menu-tag
                       (lyskom-make-menu-tag (lyskom-custom-string tag-sym))
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                       ':value
                       (lyskom-custom-get-value variable)
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                       ':help-echo
                       (lyskom-format 
                        (lyskom-custom-string 'default-help-echo)
                        (symbol-name variable))
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                       ':lyskom-storage-widget storage-widget
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                       )
                 (cdr spec))))
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    (let ((widget (apply 'widget-create spec)))
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      (condition-case nil
          (progn
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            (if (string= "" (lyskom-custom-string doc-sym))
                (widget-insert "\n")
              (widget-insert "  ")
              (widget-create 'lyskom-widget-help
                             ':value (lyskom-default-value 'kom-customize-format)
                             ':help-echo
                             (if (eq (lyskom-default-value 'kom-customize-format)
                                     'long)
                                 (lyskom-custom-string 'hide-doc)
                               (lyskom-custom-string 'show-doc))
                             ':args
                             (list (list 'long
                                         "\n%s\n\n"
                                         (lyskom-custom-string doc-sym)
                                         (lyskom-custom-string 'hide-doc)
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                                         "-")
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                                   (list 'short 
                                         "%s"
                                         ""
                                         (lyskom-custom-string 'show-doc)
                                         "?"))
                             ':format "%[[%T]%]\n%D")))
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        (error (widget-insert "\n")))
        widget)))
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(defun lyskom-widget-convert-specification (spec)
  "Convert a LysKOM widget specification to something widget-create accepts"
  (let ((convertfn (assq (car spec) lyskom-widget-functions)))
    (if (null convertfn)
        (error "Unknown widget type: %S" spec))
    (nconc (funcall (cdr convertfn)
                    (car spec)
                    (car (cdr spec))
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                    (cdr (cdr spec)))
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           (lyskom-widget-convert-props spec))))

(defun lyskom-widget-convert-props (spec)
  "Convert widget properties to a format that widget-create likes"
  (let ((propl (nthcdr 2 spec))
        (result))
    (if (/= 0 (% (length propl) 2))
        (error "Widget property list has odd length: %S" spec))
    (while propl
      (setq result (cons (car propl) result))
      (setq propl (cdr propl))
      (setq result
            (cons (cond ((symbolp (car propl))
                         (cond ((eq (car propl) t) t)
                               ((eq (car propl) nil) nil)
                               (t (lyskom-custom-string (car propl)))))
                        ((and (consp (car propl))
                              (eq 'quote (car (car propl))))
                         (car (cdr (car propl))))
                        (t (car propl)))
                  result))
      (setq propl (cdr propl)))
    (nreverse result)))


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(defun lyskom-build-simple-widget-spec (type defaults propl)
  (let (new-props)
    (while defaults
      (unless (plist-member propl (car defaults))
        (setq new-props (cons (car defaults)
                              (cons (car (cdr defaults)) new-props))))
      (setq defaults (cdr (cdr defaults))))
    (cons type new-props)))


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(defun lyskom-file-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec 'file
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                                   '(:format "%[%t%] %v" :size 0)
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                                   propl))
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(defun lyskom-person-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec 'lyskom-name nil propl))
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(defun lyskom-mark-association-widget (type &optional args propl)
  (lyskom-build-simple-widget-spec 'lyskom-mark-association nil propl))

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(defun lyskom-command-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec 'lyskom-command nil propl))
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(defun lyskom-kbd-macro-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec 'lyskom-kbd-macro
                                   (list ':macro-buffer lyskom-buffer)
                                   propl))
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(defun lyskom-item-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec 'item
                                   (list ':format "%t"
                                         ':tag (lyskom-custom-string 
                                                (elt args 0))
                                         ':value (elt args 1))
                                   propl))
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(defun lyskom-language-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'menu-choice
   (list ':format "%[%t%] %v"
         ':case-fold t
         ':args
         (mapcar
          (function
           (lambda (x)
             (list 'item
                   ':tag (lyskom-language-name (car x))
                   ':format "%t"
                   ':value (elt x 0))))
          lyskom-languages))
   propl))
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(defun lyskom-nameday-widget (type &optional args propl)
  (lyskom-build-simple-widget-spec
   'menu-choice
   (list ':format "%[%t%] %v"
         ':case-fold t
         ':args
         (mapcar
          (lambda (x)
            (list 'item
                  ':tag (nameday-data->name (cdr x))
                  ':format "%t"
                  ':value (nameday-data->code (cdr x))))
          lyskom-namedays))
   propl))

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(defun lyskom-ispell-dictionary-widget (type &optional args propl)
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  (let ((tmp-dictionary-alist nil))
    (condition-case nil 
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        (progn (require 'ispell)
               (setq tmp-dictionary-alist ispell-dictionary-alist))
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      (error (if (null ispell-dictionary-alist)
                 (setq tmp-dictionary-alist '("american" "brasiliano"
                                              "british" "castellano"
                                              "castellano8" "czech" 
                                              "dansk" "deutsch"
                                              "deutsch8" "english" 
                                              "esperanto" "esperanto-tex"
                                              "francais7" "francais" 
                                              "francais-tex" "nederlands"
                                              "nederlands8" "norsk"
                                              "norsk7-tex" "polish"
                                              "russian" "svenska")))))
    (lyskom-build-simple-widget-spec 
     'menu-choice
     (list ':format "%[%t%] %v"
           ':case-fold nil
           ':args
           (cons (list 'item
                       ':tag "ispell-dictionary"
                       ':format "%t"
                       ':value nil)
                 (delq nil
                       (mapcar 
                        (function
                         (lambda (x)
                           (and (car x)
                                (list 'item
                                      ':tag (car x)
                                      ':format "%t"
                                      ':value (car x)))))
                        tmp-dictionary-alist))))
     propl)))
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(defun lyskom-url-viewer-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'menu-choice 
   (list ':format "%[%v%]\n"
         ':case-fold t
         ':help-echo (lyskom-custom-string 'select-url-viewer)
         ':args
         (list (list 'item
                     ':tag (lyskom-custom-string 'no-viewer)
                     ':format "%t"
                     ':value nil)
               (list 'item 
                     ':tag (lyskom-custom-string 'default-viewer)
                     ':format "%t"
                     ':value "default")
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               (list 'item
                     ':tag (lyskom-custom-string 'windows-viewer)
                     ':format "%t"
                     ':value "windows")
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               (list 'item
                     ':tag (lyskom-custom-string 'netscape-viewer)
                     ':format "%t"
                     ':value "netscape")
               (list 'item
                     ':tag (lyskom-custom-string 'emacs-w3-viewer)
                     ':format "%t"
                     ':value "w3")
               (list 'item 
                     ':tag (lyskom-custom-string 'emacs-general-viewer)
                     ':format "%t"
                     ':value "emacs")
               (list 'item
                     ':tag (lyskom-custom-string 'emacs-dired-viewer)
                     ':format "%t"
                     ':value "dired")
               (list 'item 
                     ':tag (lyskom-custom-string 'emacs-mail-viewer)
                     ':format "%t"
                     ':value "mail-mode")
               (list 'item
                     ':tag (lyskom-custom-string 'emacs-telnet-viewer)
                     ':format "%t"
                     ':value "telnet-mode")
               (list 'item
                     ':tag (lyskom-custom-string 'mosaic-viewer)
                     ':format "%t"
                     ':value "mosaic")
               (list 'item
                     ':tag (lyskom-custom-string 'lynx-viewer)
                     ':format "%t"
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                     ':value "lynx")
	       (list 'item
                     ':tag (lyskom-custom-string 'galeon-viewer)
                     ':format "%t"
                     ':value "galeon")))
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   propl))
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(defun lyskom-open-window-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'menu-choice
   (list ':case-fold t
         ':format "%[%t%] %v"
         ':args
         (list (list 'item
                     ':tag (lyskom-custom-string 'other-window)
                     ':format "%t"
                     ':value 'other)
               (list 'item 
                     ':tag (lyskom-custom-string 'other-frame)
                     ':format "%t"
                     ':value 'other-frame)
               (list 'item 
                     ':tag (lyskom-custom-string 'new-frame)
                     ':format "%t"
                     ':value 'new-frame)
               (list 'item
                     ':tag (lyskom-custom-string 'lyskom-window)
                     ':format "%t"
                     ':value nil)
               (list 'editable-field
                     ':tag (lyskom-custom-string 'window-on-buffer)
                     ':format "%[%t%]: `%v'"
                     ':value ""
                     ':size 0)))
   propl))
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(defun lyskom-ding-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'menu-choice
   (list  ':case-fold t
          ':format "%[%t%] %v"
          ':args
          (list (list 'item 
                      ':tag (lyskom-custom-string 'turned-off)
                      ':value 0
                      ':format "%t"
                      ':match '(lambda (w v) (eq v 0)))
                (list 'lyskom-number
                      ':tag (lyskom-custom-string 'number-of-times)
                      ':help-echo (lyskom-custom-string 'select-number)
                      ':value "1"
                      ':format "%[%t%]: (%v)"
                      ':size 0
                      ':min-value 1
                      ':max-value 255)
                (list 'lyskom-string
                      ':tag (lyskom-custom-string 'sound-file)
                      ':help-echo (lyskom-custom-string 'select-audio-file)
                      ':size 0)
                (list 'editable-list
                      ':format "%[%t%]\n%v%i"
                      ':indent 4
                      ':tag (lyskom-custom-string 'specific-spec)
                      ':menu-tag (lyskom-custom-string 'specific-spec)
                      ':args
                      `((cons :format "%v" 
                              :value (1 0)
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                              :args
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                              ((menu-choice
                                :case-fold t
                                :format "%[%t%]: %v"
                                :tag ,(lyskom-custom-string 'conf-or-person)
                                :args
                                ((lyskom-name :lyskom-predicate (pers conf)
                                              :tag ,(lyskom-custom-string 'conf-or-person))
                                 (item :tag ,(lyskom-custom-string 'other-persons)
                                       :value t
                                       :format "%t\n")))
                               (menu-choice
                                :case-fold t
                                :format "%[%t%]: %v\n"
                                :tag ,(lyskom-custom-string 'ding)
                                :args
                                ((item :tag ,(lyskom-custom-string 'turned-off)
                                       :value nil
                                       :format "%t"
                                       :match (lambda (w v) (or (null v) (eq v 0))))
                                 (lyskom-number :tag ,(lyskom-custom-string 'number-of-times)
                                                :help-echo ,(lyskom-custom-string 'select-number)
                                                :value "1"
                                                :format "%[%t%]: (%v)"
                                                :size 0
                                                :min-value 1
                                                :max-value 255)
                                 (lyskom-string :tag ,(lyskom-custom-string 'sound-file)
                                                :help-echo ,(lyskom-custom-string 'select-audio-file)
                                                :size 0))))))
                      )
                ))
   propl))
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(defun lyskom-toggle-widget-inverse (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'menu-choice
   (list ':case-fold t
         ':format "%[%t%] %v"
         ':args
         (list (list 'item ':tag (lyskom-custom-string (elt args 0))
                     ':value nil
                     ':format "%t")
               (list 'item 
                     ':tag (lyskom-custom-string (elt args 1))
                     ':value t
                     ':match '(lambda (w v) v)
                     ':format "%t")))
   propl))
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(defun lyskom-toggle-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'menu-choice
   (list ':case-fold t
         ':format "%[%t%] %v"
         ':args
         (list (list 'item
                     ':tag (lyskom-custom-string (elt args 0))
                     ':value t
                     ':format "%t"
                     ':match '(lambda (w v) v))
               (list 'item ':tag (lyskom-custom-string (elt args 1))
                     ':value nil
                     ':format "%t")))
   propl))
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(defun lyskom-repeat-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'editable-list 
   (list ':format "%[%t%]\n%v%i"
         ':args
         (list (lyskom-widget-convert-specification args)))
   propl))
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(defun lyskom-cons-widget (type &optional args propl)
  (lyskom-build-simple-widget-spec
   'cons
   (list ':format "%v\n"
         ':tag ""
         ':args (list (lyskom-widget-convert-specification (elt args 0))
                      (lyskom-widget-convert-specification (elt args 1))))
   propl))

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(defun lyskom-choice-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'menu-choice
   (list ':case-fold t
         ':format "%[%t%] %v"
         ':args
         (mapcar 'lyskom-widget-convert-specification args))
   propl))
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(defun lyskom-string-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'lyskom-string 
   (list ':size 0 
         ':format "%[%t%] `%v'")
   propl))
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(defun lyskom-number-widget (type &optional args propl)
  (if args
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      (lyskom-build-simple-widget-spec
       'lyskom-number
       (list ':min-value (elt args 0)
             ':max-value (elt args 1)
             ':size 0)
       propl)
    (lyskom-build-simple-widget-spec
     'lyskom-number
     (list ':size 0)
     propl)))
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;;;
;;; The ansaphone reply widget (whew!)

(defun lyskom-ansaphone-reply-widget (type &optional args propl)
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  (lyskom-build-simple-widget-spec
   'editable-list
   (list ':format "%t:\n%v%i\n"
         ':args
         `((group
            :args ((menu-choice :tag ,(lyskom-custom-string 'ar-message-type)
                                :format "%[%t%]: %v"
                                :args
                                ((item :value personal :tag ,(lyskom-custom-string 'ar-personal))
                                 (item :value group :tag ,(lyskom-custom-string 'ar-group))
                                 (item :value common :tag ,(lyskom-custom-string 'ar-alarm))
                                 (item :value nil :tag ,(lyskom-custom-string 'ar-any-type))))
                   (menu-choice :tag ,(lyskom-custom-string 'ar-sender)
                                :args
                                ((item :value nil :tag ,(lyskom-custom-string 'ar-any-sender))
                                 (editable-list :tag ,(lyskom-custom-string 'ar-specified-sender)
                                                :menu-tag ,(lyskom-custom-string 'ar-specified-sender)
                                                :format "%t:\n%v%i\n"
                                                :indent 14
                                                :args
                                                ((lyskom-name 
                                                  :format "%[%t%]: %v"
                                                  :tag ,(lyskom-custom-string 'ar-person))))))
                   (menu-choice :tag ,(lyskom-custom-string 'ar-recipient)
                                :args
                                ((item :value nil :tag ,(lyskom-custom-string 'ar-any-recipient))
                                 (editable-list :tag ,(lyskom-custom-string 'ar-specified-recipient)
                                                :menu-tag ,(lyskom-custom-string 'ar-specified-recipient)
                                                :format "%t:\n%v%i\n"
                                                :indent 14
                                                :args
                                                ((lyskom-name :tag ,(lyskom-custom-string 'ar-pers-or-conf)
                                                              :format "%[%t%]: %v"
                                                              :lyskom-predicate (pers conf))))))
                   (menu-choice :tag ,(lyskom-custom-string 'ar-message-text)
                                :args
                                ((item :value nil :tag ,(lyskom-custom-string 'ar-any-message))
                                 (lyskom-string :tag ,(lyskom-custom-string 'ar-matching-regexp)
                                                :size 0
                                                :format "%[%t%] `%v'\n")))
                   (menu-choice :tag ,(lyskom-custom-string 'ar-reply)
                                :args
                                ((item :value nil :tag ,(lyskom-custom-string 'ar-no-reply))
                                 (lyskom-string :tag ,(lyskom-custom-string 'ar-reply-text)
                                                :size 0
                                                :format "%[%t%] `%v'\n")))))))
   propl))
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;;; ======================================================================
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;;; Generic LysKOM widget functions
;;;

(defun lyskom-widget-value-get (widget)
  (widget-get widget ':value))

(defun lyskom-widget-value-delete (widget)
  (set-marker (widget-get widget ':value-from) nil)
  (set-marker (widget-get widget ':value-to) nil))
  

(defun lyskom-widget-value-to-external (widget value)
  value)

(defun lyskom-widget-value-to-internal (widget value)
  value)

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(defun lyskom-widget-invalid-value (widget)
  (widget-put widget ':error 
              (lyskom-format (lyskom-custom-string 'invalid-value)
                             (widget-value widget)))
  widget)

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;;;
;;; The Person Widget
;;;

(defun lyskom-widget-name-action (widget &optional event)
  (widget-value-set widget
                    (save-excursion
                      (set-buffer lyskom-buffer)
                      (lyskom-read-conf-no
                       (lyskom-custom-string
                        (cond ((widget-get widget ':lyskom-prompt)
                               (widget-get widget ':lyskom-prompt))
                              ((and 
                                (memq 'pers (widget-get widget
                                                        ':lyskom-predicate))
                                (memq 'conf (widget-get widget
                                                        ':lyskom-predicate)))
                               'which-conf-or-person)
                              ((memq 'pers (widget-get widget
                                                       ':lyskom-predicate))
                               'which-person)
                              ((memq 'conf (widget-get widget
                                                       ':lyskom-predicate))
                               'which-conf)
                              (t 'which-name)))
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                       (widget-get widget ':lyskom-predicate)
                       nil
                       nil
                       t)))
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  (widget-setup))
               
(defun lyskom-widget-name-value-create (widget)
  (let* ((size (widget-get widget ':size))
         (value (widget-get widget ':value))
         (from (point))
         (string (save-excursion
                   (set-buffer lyskom-buffer)
                   (cond ((or (null value) (eq 0 value)) "")
                         (t (or (conf-stat->name
                                 (blocking-do 'get-conf-stat value))
                                (lyskom-format
                                 (lyskom-custom-string 'some-person)
                                 value)))))))
    (if (null size)
        (insert string)
      (insert string)
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      (if (< (lyskom-string-width value) size)
          (insert-char ?\  (- size (lyskom-string-width value)))))
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    (widget-put widget ':value-from (copy-marker from))
    (widget-put widget ':value-to (copy-marker (point)))
    (set-marker-insertion-type (widget-get widget ':value-to) nil)
    (if (null size)
        (insert ?\n)
      (insert ?\ ))))

(defun lyskom-widget-name-match (widget value)
  (and (numberp value)
       (>= value 0)))

(defun lyskom-widget-name-validate (widget)
  (let ((value (widget-value widget)))
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    (if (and (numberp value)
             (>= value 0))
        nil
      (lyskom-widget-invalid-value widget))))
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(define-widget 'lyskom-name 'default
  "A LysKOM person"
  ':format "%[[*]%] %v"
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  ':default-help-echo 'change-this-name
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  ':value 0
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  ':lyskom-predicate '(pers)
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  ':action 'lyskom-widget-name-action
  ':value-create 'lyskom-widget-name-value-create
  ':value-delete 'lyskom-widget-value-delete
  ':value-get 'lyskom-widget-value-get
  ':value-to-external 'lyskom-widget-value-to-external
  ':value-to-internal 'lyskom-widget-value-to-internal
  ':match 'lyskom-widget-name-match
  ':validate 'lyskom-widget-name-validate
)

(define-widget 'lyskom-name-list 'editable-list
  "A list of LysKOM commands"
  ':entry-format "%i %d %v"
  ':args '(lyskom-name))


;;;
;;; The Command Widget
;;;

(defun lyskom-widget-command-action (widget &optional event)
  (widget-value-set widget
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		    (save-excursion
		      (set-buffer lyskom-buffer)
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		      (lyskom-read-extended-command nil (concat 
                                                         (widget-get widget ':tag)
                                                         ": "))))
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  (widget-setup))
               
(defun lyskom-widget-command-value-create (widget)
  (let* ((size (widget-get widget ':size))
         (value (widget-get widget ':value))
         (from (point))
         (string (save-excursion
                   (set-buffer lyskom-buffer)
                   (cond ((null value) "")
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                         (t (or (lyskom-try-get-string value 'lyskom-command)
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                                (lyskom-format
                                 (lyskom-custom-string 'unknown-command)
                                 (symbol-name value))))))))
    (if (null size)
        (insert string)
      (insert string)
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      (if (< (lyskom-string-width value) size)
          (insert-char ?\  (- size (lyskom-string-width value)))))
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    (widget-put widget ':value-from (copy-marker from))
    (widget-put widget ':value-to (copy-marker (point)))
    (set-marker-insertion-type (widget-get widget ':value-to) nil)
    (if (null size)
        (insert ?\n)
      (insert ?\ ))))

(defun lyskom-widget-command-match (widget value)
  (symbolp value))

(defun lyskom-widget-command-validate (widget)
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  (if (symbolp (widget-value widget))
      nil
    (lyskom-widget-invalid-value widget)))
  
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(define-widget 'lyskom-command 'default
  "A LysKOM command"
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  ':format "%[%t%] %v"