1 ;;; egg.el --- EGG Input Method Architecture
3 ;; Copyright (C) 1999, 2000 Free Software Foundation, Inc
5 ;; Author: NIIBE Yutaka <gniibe@chroot.org>
6 ;; KATAYAMA Yoshio <kate@pfu.co.jp>
8 ;; Maintainer: TOMURA Satoru <tomura@etl.go.jp>
10 ;; Keywords: mule, multilingual, input method
12 ;; This file is part of EGG.
14 ;; EGG is free software; you can redistribute it and/or modify
15 ;; it under the terms of the GNU General Public License as published by
16 ;; the Free Software Foundation; either version 2, or (at your option)
19 ;; EGG is distributed in the hope that it will be useful,
20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 ;; GNU General Public License for more details.
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with GNU Emacs; see the file COPYING. If not, write to the
26 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
27 ;; Boston, MA 02111-1307, USA.
36 (autoload 'egg-simple-input-method "egg-sim"
37 "simple input method for Tamago 4." t)
42 (defcustom egg-mode-preference t
43 "*Make Egg as modefull input method, if non-NIL."
44 :group 'egg :type 'boolean)
46 (defvar egg-default-language)
48 (defvar egg-last-method-name nil)
49 (make-variable-buffer-local 'egg-last-method-name)
50 (put 'egg-last-method-name 'permanent-local t)
52 (defvar egg-mode-map-alist nil)
53 (defvar egg-sub-mode-map-alist nil)
55 (defmacro define-egg-mode-map (mode &rest initializer)
56 (let ((map (intern (concat "egg-" (symbol-name mode) "-map")))
57 (var (intern (concat "egg-" (symbol-name mode) "-mode")))
58 (comment (concat (symbol-name mode) " keymap for EGG mode.")))
60 (defvar ,map (let ((map (make-sparse-keymap)))
66 (make-variable-buffer-local ',var)
67 (put ',var 'permanent-local t)
68 (or (assq ',var egg-mode-map-alist)
69 (setq egg-mode-map-alist (append egg-mode-map-alist
70 '((,var . ,map))))))))
72 (define-egg-mode-map modefull
73 (define-key map "\C-^" 'egg-simple-input-method)
76 (define-key map (vector i) 'egg-self-insert-char)
79 (define-egg-mode-map modeless
80 (define-key map " " 'mlh-space-bar-backward-henkan)
81 (define-key map "\C-^" 'egg-simple-input-method))
83 (defvar egg-enter/leave-fence-hook nil)
85 (defun egg-enter/leave-fence (&optional old new)
86 (run-hooks 'egg-enter/leave-fence-hook))
88 (defvar egg-activated nil)
89 (make-variable-buffer-local 'egg-activated)
90 (put 'egg-activated 'permanent-local t)
92 (defun egg-activate-keymap ()
93 (when (and egg-activated
94 (null (eq (car egg-sub-mode-map-alist)
95 (car minor-mode-overriding-map-alist))))
96 (let ((alist (append egg-sub-mode-map-alist egg-mode-map-alist))
97 (overriding (copy-sequence minor-mode-overriding-map-alist)))
99 (setq overriding (delq (assq (caar alist) overriding) overriding)
101 (setq minor-mode-overriding-map-alist (append egg-sub-mode-map-alist
103 egg-mode-map-alist)))))
105 (add-hook 'egg-enter/leave-fence-hook 'egg-activate-keymap t)
107 (defun egg-modify-fence (&rest arg)
108 (add-hook 'post-command-hook 'egg-post-command-func))
110 (defun egg-post-command-func ()
111 (run-hooks 'egg-enter/leave-fence-hook)
112 (remove-hook 'post-command-hook 'egg-post-command-func))
114 (defvar egg-change-major-mode-buffer nil)
116 (defun egg-activate-keymap-after-command ()
117 (while egg-change-major-mode-buffer
119 (set-buffer (car egg-change-major-mode-buffer))
120 (egg-activate-keymap)
121 (setq egg-change-major-mode-buffer (cdr egg-change-major-mode-buffer))))
122 (remove-hook 'post-command-hook 'egg-activate-keymap-after-command))
124 (defun egg-change-major-mode-func ()
125 (setq egg-change-major-mode-buffer (cons (current-buffer)
126 egg-change-major-mode-buffer))
127 (add-hook 'post-command-hook 'egg-activate-keymap-after-command))
129 (add-hook 'change-major-mode-hook 'egg-change-major-mode-func)
132 (defun egg-mode (&rest arg)
134 \\[describe-bindings]
142 (egg-exit-conversion))
143 (setq describe-current-input-method-function nil
144 egg-modefull-mode nil
145 egg-modeless-mode nil)
146 (remove-hook 'input-method-activate-hook 'its-set-mode-line-title t)
147 (force-mode-line-update))
149 (if (null (string= (car arg) egg-last-method-name))
151 (funcall (nth 1 arg))
152 (setq egg-default-language its-current-language)))
153 (egg-set-conversion-backend (nthcdr 2 arg))
154 (egg-set-conversion-backend
155 (list (assq its-current-language (nthcdr 2 arg))) t)
156 (setq egg-last-method-name (car arg)
158 (egg-activate-keymap)
159 (if egg-mode-preference
161 (setq egg-modefull-mode t)
162 (its-define-select-keys egg-modefull-map))
163 (setq egg-modeless-mode t))
164 (setq inactivate-current-input-method-function 'egg-mode)
165 (setq describe-current-input-method-function 'egg-help)
166 (make-local-hook 'input-method-activate-hook)
167 (add-hook 'input-method-activate-hook 'its-set-mode-line-title nil t)
168 (if (eq (selected-window) (minibuffer-window))
169 (add-hook 'minibuffer-exit-hook 'egg-exit-from-minibuffer))
170 (run-hooks 'egg-mode-hook)))
172 (defun egg-exit-from-minibuffer ()
173 (inactivate-input-method)
174 (if (<= (minibuffer-depth) 1)
175 (remove-hook 'minibuffer-exit-hook 'egg-exit-from-minibuffer)))
177 (defvar egg-context nil)
179 (defun egg-self-insert-char ()
181 (its-start last-command-char (and (eq last-command 'egg-use-context)
184 (defun egg-remove-all-text-properties (from to &optional object)
188 (setq prop (text-properties-at p object))
190 (unless (eq (car prop) 'composition)
191 (setq props (plist-put props (car prop) nil)))
192 (setq prop (cddr prop)))
193 (setq p (next-property-change p object to)))
194 (remove-text-properties from to props object)))
196 (defvar egg-mark-list nil)
197 (defvar egg-suppress-marking nil)
199 (defun egg-set-face (beg eng face &optional object)
200 (let ((hook (get-text-property beg 'modification-hooks object)))
201 (put face 'face face)
202 (add-text-properties beg eng
205 'modification-hooks (cons 'egg-mark-modification
209 (defun egg-mark-modification (beg end)
210 (if (and (null egg-suppress-marking)
211 (or (get-text-property beg 'egg-face)
212 (setq beg (next-single-property-change beg 'egg-face)))
213 (or (get-text-property (1- end) 'egg-face)
214 (setq end (previous-single-property-change end 'egg-face)))
216 (let ((list egg-mark-list)
219 (add-hook 'post-command-hook 'egg-redraw-face t)
220 (setq list egg-mark-list)
221 (while (and list (< found 2))
222 (setq pair (car list)
226 b (marker-position mb)
227 e (marker-position me))
229 ;; no overwrapping -- SKIP
230 ((or (null (eq (marker-buffer mb) (current-buffer)))
231 (or (> beg e) (< end b))))
232 ;; completely included
233 ((and (>= beg b) (<= end e))
235 ;; partially overwrapping
239 (setq egg-mark-list (delete pair egg-mark-list)
245 (setq b (make-marker)
247 egg-mark-list (cons (cons b e) egg-mark-list))
249 (set-marker e end))))))
251 (defun egg-redraw-face ()
252 (let ((inhibit-read-only t)
253 (inhibit-point-motion-hooks t)
254 (egg-suppress-marking t)
256 (org-buffer (current-buffer))
259 (setq egg-mark-list nil)
260 (remove-hook 'post-command-hook 'egg-redraw-face)
262 (setq mb (car (car list))
265 (when (marker-buffer mb)
266 (set-buffer (marker-buffer mb))
267 (let ((before-change-functions nil) (after-change-functions nil))
271 (setq b (max mb (point-min))
272 e (min me (point-max)))
276 (if (null (get-text-property b 'egg-face))
277 (setq b (next-single-property-change b 'egg-face nil e)))
278 (setq p (next-single-property-change b 'egg-face nil e))
281 (remove-text-properties 0 (- p b) '(face))
283 (set-buffer org-buffer)
284 (goto-char org-point)))
286 (defvar egg-messages nil)
287 (defvar egg-message-language-alist nil)
289 (defun egg-get-message (message)
290 (let ((lang (or (cdr (assq egg-default-language egg-message-language-alist))
291 egg-default-language)))
292 (or (nth 1 (assq message (cdr (assq lang egg-messages))))
293 (nth 1 (assq message (cdr (assq nil egg-messages))))
294 (error "EGG internal error: no such message: %s (%s)"
295 message egg-default-language))))
297 (defun egg-add-message (list)
301 (or (setq msg-l (assq (car l) egg-messages))
302 (setq egg-messages (cons (list (car l)) egg-messages)
303 msg-l (car egg-messages)))
306 (setcdr msg-l (cons msg (delq (assq (car msg) msg-l) (cdr msg-l)))))
308 (setq list (cdr list)))))
310 (defun egg-set-message-language-alist (alist)
313 (setq egg-message-language-alist
314 (delq (assq (caar a) egg-message-language-alist)
315 egg-message-language-alist))
317 (setq egg-message-language-alist
318 (append alist egg-message-language-alist))))
320 (put 'egg-error 'error-conditions '(error egg-error))
321 (put 'egg-error 'error-message "EGG error")
323 (defun egg-error (message &rest args)
324 (if (symbolp message)
325 (setq message (egg-get-message message)))
326 (signal 'egg-error (list (apply 'format message args))))
329 ;;; auto fill controll
332 (defun egg-do-auto-fill ()
333 (if (and auto-fill-function (> (current-column) fill-column))
334 (let ((ocolumn (current-column)))
335 (funcall auto-fill-function)
336 (while (and (< fill-column (current-column))
337 (< (current-column) ocolumn))
338 (setq ocolumn (current-column))
339 (funcall auto-fill-function)))))
341 (eval-when (eval load)
348 (add-hook 'kill-emacs-hook 'egg-kill-emacs-function)
349 (defun egg-kill-emacs-function ()
350 (egg-finalize-backend))