;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
-;; Copyright (C) 1995,96 Free Software Foundation, Inc.
-;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+
+;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs 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.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
-(eval-when-compile (require 'cl))
+(eval-when-compile
+ (require 'cl)
+ (require 'ring))
+
+;;; Function aliases later to be redefined for XEmacs usage.
(defvar gnus-mouse-2 [mouse-2])
+(defvar gnus-down-mouse-3 [down-mouse-3])
+(defvar gnus-down-mouse-2 [down-mouse-2])
+(defvar gnus-widget-button-keymap nil)
+(defvar gnus-mode-line-modified
+ (if (featurep 'xemacs)
+ '("--**-" . "-----")
+ '("**" "--")))
-(defalias 'gnus-make-overlay 'make-overlay)
-(defalias 'gnus-overlay-put 'overlay-put)
-(defalias 'gnus-move-overlay 'move-overlay)
-(defalias 'gnus-overlay-end 'overlay-end)
-(defalias 'gnus-extent-detached-p 'ignore)
-(defalias 'gnus-extent-start-open 'ignore)
-(defalias 'gnus-set-text-properties 'set-text-properties)
-(defalias 'gnus-group-remove-excess-properties 'ignore)
-(defalias 'gnus-topic-remove-excess-properties 'ignore)
-(defalias 'gnus-appt-select-lowest-window 'appt-select-lowest-window)
-(defalias 'gnus-mail-strip-quoted-names 'mail-strip-quoted-names)
-(defalias 'gnus-make-local-hook 'make-local-hook)
-(defalias 'gnus-add-hook 'add-hook)
-(defalias 'gnus-character-to-event 'identity)
-(defalias 'gnus-add-text-properties 'add-text-properties)
-(defalias 'gnus-put-text-property 'put-text-property)
-
-(eval-and-compile
+(eval-and-compile
(autoload 'gnus-xmas-define "gnus-xmas")
- (autoload 'gnus-xmas-redefine "gnus-xmas")
- (autoload 'appt-select-lowest-window "appt.el"))
+ (autoload 'gnus-xmas-redefine "gnus-xmas"))
-(or (fboundp 'mail-file-babyl-p)
- (fset 'mail-file-babyl-p 'rmail-file-p))
+(autoload 'gnus-get-buffer-create "gnus")
+(autoload 'nnheader-find-etc-directory "nnheader")
+(autoload 'smiley-region "smiley")
-;;; Mule functions.
+(defun gnus-kill-all-overlays ()
+ "Delete all overlays in the current buffer."
+ (let* ((overlayss (overlay-lists))
+ (buffer-read-only nil)
+ (overlays (delq nil (nconc (car overlayss) (cdr overlayss)))))
+ (while overlays
+ (delete-overlay (pop overlays)))))
-(defun gnus-mule-cite-add-face (number prefix face)
- ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line.
- (if face
- (let ((inhibit-point-motion-hooks t)
- from to)
- (goto-line number)
- (if (boundp 'MULE)
- (forward-char (chars-in-string prefix))
- (forward-char (length prefix)))
- (skip-chars-forward " \t")
- (setq from (point))
- (end-of-line 1)
- (skip-chars-backward " \t")
- (setq to (point))
- (if (< from to)
- (gnus-overlay-put (gnus-make-overlay from to) 'face face)))))
+;;; Mule functions.
(defun gnus-mule-max-width-function (el max-width)
- (` (let* ((val (eval (, el)))
- (valstr (if (numberp val)
- (int-to-string val) val)))
- (if (> (length valstr) (, max-width))
- (truncate-string valstr (, max-width))
- valstr))))
+ `(let* ((val (eval (, el)))
+ (valstr (if (numberp val)
+ (int-to-string val) val)))
+ (if (> (length valstr) ,max-width)
+ (truncate-string-to-width valstr ,max-width)
+ valstr)))
(eval-and-compile
- (if (string-match "XEmacs\\|Lucid" emacs-version)
- ()
-
+ (if (featurep 'xemacs)
+ (gnus-xmas-define)
(defvar gnus-mouse-face-prop 'mouse-face
- "Property used for highlighting mouse regions.")
-
- ;; Added by Per Abrahamsen <amanda@iesd.auc.dk>.
- (defvar gnus-display-type
- (condition-case nil
- (let ((display-resource (x-get-resource ".displayType" "DisplayType")))
- (cond (display-resource (intern (downcase display-resource)))
- ((x-display-color-p) 'color)
- ((x-display-grayscale-p) 'grayscale)
- (t 'mono)))
- (error 'mono))
- "A symbol indicating the display Emacs is running under.
-The symbol should be one of `color', `grayscale' or `mono'. If Emacs
-guesses this display attribute wrongly, either set this variable in
-your `~/.emacs' or set the resource `Emacs.displayType' in your
-`~/.Xdefaults'. See also `gnus-background-mode'.
-
-This is a meta-variable that will affect what default values other
-variables get. You would normally not change this variable, but
-pounce directly on the real variables themselves.")
-
- (defvar gnus-background-mode
- (condition-case nil
- (let ((bg-resource (x-get-resource ".backgroundMode"
- "BackgroundMode"))
- (params (frame-parameters)))
- (cond (bg-resource (intern (downcase bg-resource)))
- ((and (cdr (assq 'background-color params))
- (< (apply '+ (x-color-values
- (cdr (assq 'background-color params))))
- (/ (apply '+ (x-color-values "white")) 3)))
- 'dark)
- (t 'light)))
- (error 'light))
- "A symbol indicating the Emacs background brightness.
-The symbol should be one of `light' or `dark'.
-If Emacs guesses this frame attribute wrongly, either set this variable in
-your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
-`~/.Xdefaults'.
-See also `gnus-display-type'.
-
-This is a meta-variable that will affect what default values other
-variables get. You would normally not change this variable, but
-pounce directly on the real variables themselves."))
-
- (cond
- ((string-match "XEmacs\\|Lucid" emacs-version)
- (gnus-xmas-define))
-
- ((or (not (boundp 'emacs-minor-version))
- (< emacs-minor-version 30))
- ;; Remove the `intangible' prop.
- (let ((props (and (boundp 'gnus-hidden-properties)
- gnus-hidden-properties)))
- (while (and props (not (eq (car (cdr props)) 'intangible)))
- (setq props (cdr props)))
- (and props (setcdr props (cdr (cdr (cdr props))))))
- (or (fboundp 'buffer-substring-no-properties)
- (defun buffer-substring-no-properties (beg end)
- (format "%s" (buffer-substring beg end)))))
-
- ((boundp 'MULE)
- (provide 'gnusutil))))
-
-(eval-and-compile
- (cond
- ((not window-system)
- (defun gnus-dummy-func (&rest args))
- (let ((funcs '(mouse-set-point set-face-foreground
- set-face-background x-popup-menu)))
- (while funcs
- (or (fboundp (car funcs))
- (fset (car funcs) 'gnus-dummy-func))
- (setq funcs (cdr funcs))))))
- (or (fboundp 'file-regular-p)
- (defun file-regular-p (file)
- (and (not (file-directory-p file))
- (not (file-symlink-p file))
- (file-exists-p file))))
- (or (fboundp 'face-list)
- (defun face-list (&rest args))))
-
-(eval-and-compile
- (let ((case-fold-search t))
- (cond
- ((string-match "windows-nt\\|os/2\\|emx" (format "%s" system-type))
- (setq nnheader-file-name-translation-alist
- (append nnheader-file-name-translation-alist
- '((?: . ?_)
- (?+ . ?-))))))))
+ "Property used for highlighting mouse regions.")))
(defvar gnus-tmp-unread)
(defvar gnus-tmp-replied)
(defvar gnus-tmp-name)
(defvar gnus-tmp-closing-bracket)
(defvar gnus-tmp-subject-or-nil)
+(defvar gnus-check-before-posting)
+(defvar gnus-mouse-face)
+(defvar gnus-group-buffer)
(defun gnus-ems-redefine ()
- (cond
- ((string-match "XEmacs\\|Lucid" emacs-version)
+ (cond
+ ((featurep 'xemacs)
(gnus-xmas-redefine))
- ((boundp 'MULE)
- ;; Mule definitions
- (defalias 'gnus-truncate-string 'truncate-string)
+ ((featurep 'mule)
+ ;; Mule and new Emacs definitions
+
+ ;; [Note] Now there are three kinds of mule implementations,
+ ;; original MULE, XEmacs/mule and Emacs 20+ including
+ ;; MULE features. Unfortunately these APIs are different. In
+ ;; particular, Emacs (including original Mule) and XEmacs are
+ ;; quite different. However, this version of Gnus doesn't support
+ ;; anything other than XEmacs 20+ and Emacs 20.3+.
+
+ ;; Predicates to check are following:
+ ;; (boundp 'MULE) is t only if Mule (original; anything older than
+ ;; Mule 2.3) is running.
+ ;; (featurep 'mule) is t when other mule variants are running.
- (fset 'gnus-summary-make-display-table (lambda () nil))
- (fset 'gnus-cite-add-face 'gnus-mule-cite-add-face)
- (fset 'gnus-max-width-function 'gnus-mule-max-width-function)
-
- (if (boundp 'gnus-check-before-posting)
- (setq gnus-check-before-posting
- (delq 'long-lines
- (delq 'control-chars gnus-check-before-posting))))
+ ;; It is possible to detect XEmacs/mule by (featurep 'mule) and
+ ;; (featurep 'xemacs). In this case, the implementation for
+ ;; XEmacs/mule may be shareable between XEmacs and XEmacs/mule.
+
+ (defvar gnus-summary-display-table nil
+ "Display table used in summary mode buffers.")
+ (defalias 'gnus-max-width-function 'gnus-mule-max-width-function)
+
+ (when (boundp 'gnus-check-before-posting)
+ (setq gnus-check-before-posting
+ (delq 'long-lines
+ (delq 'control-chars gnus-check-before-posting))))
(defun gnus-summary-line-format-spec ()
- (insert gnus-tmp-unread gnus-tmp-replied
+ (insert gnus-tmp-unread gnus-tmp-replied
gnus-tmp-score-char gnus-tmp-indentation)
(put-text-property
(point)
(progn
- (insert
- gnus-tmp-opening-bracket
- (format "%4d: %-20s"
- gnus-tmp-lines
- (if (> (length gnus-tmp-name) 20)
- (truncate-string gnus-tmp-name 20)
+ (insert
+ gnus-tmp-opening-bracket
+ (format "%4d: %-20s"
+ gnus-tmp-lines
+ (if (> (length gnus-tmp-name) 20)
+ (truncate-string-to-width gnus-tmp-name 20)
gnus-tmp-name))
gnus-tmp-closing-bracket)
(point))
gnus-mouse-face-prop gnus-mouse-face)
- (insert " " gnus-tmp-subject-or-nil "\n"))
- )))
+ (insert " " gnus-tmp-subject-or-nil "\n")))))
+
+;; Clone of `appt-select-lowest-window' in appt.el.
+(defun gnus-select-lowest-window ()
+"Select the lowest window on the frame."
+ (let ((lowest-window (selected-window))
+ (bottom-edge (nth 3 (window-edges))))
+ (walk-windows (lambda (w)
+ (let ((next-bottom-edge (nth 3 (window-edges w))))
+ (when (< bottom-edge next-bottom-edge)
+ (setq bottom-edge next-bottom-edge
+ lowest-window w)))))
+ (select-window lowest-window)))
+
+(defun gnus-region-active-p ()
+ "Say whether the region is active."
+ (and (boundp 'transient-mark-mode)
+ transient-mark-mode
+ (boundp 'mark-active)
+ mark-active))
+
+(defun gnus-mark-active-p ()
+ "Non-nil means the mark and region are currently active in this buffer."
+ mark-active) ; aliased to region-exists-p in XEmacs.
+
+(autoload 'gnus-alive-p "gnus-util")
+(autoload 'mm-disable-multibyte "mm-util")
+
+(defun gnus-x-splash ()
+ "Show a splash screen using a pixmap in the current buffer."
+ (interactive)
+ (unless window-system
+ (error "`gnus-x-splash' requires running on the window system"))
+ (switch-to-buffer (gnus-get-buffer-create (if (or (gnus-alive-p)
+ (interactive-p))
+ "*gnus-x-splash*"
+ gnus-group-buffer)))
+ (let ((inhibit-read-only t)
+ (file (nnheader-find-etc-directory "images/gnus/x-splash" t))
+ pixmap fcw fch width height fringes sbars left yoffset top ls)
+ (erase-buffer)
+ (sit-for 0) ;; Necessary for measuring the window size correctly.
+ (when (and file
+ (ignore-errors
+ (let ((coding-system-for-read 'raw-text))
+ (with-temp-buffer
+ (mm-disable-multibyte)
+ (insert-file-contents file)
+ (goto-char (point-min))
+ (setq pixmap (read (current-buffer)))))))
+ (setq fcw (float (frame-char-width))
+ fch (float (frame-char-height))
+ width (/ (car pixmap) fcw)
+ height (/ (cadr pixmap) fch)
+ fringes (if (fboundp 'window-fringes)
+ (eval '(window-fringes))
+ '(10 11 nil))
+ sbars (frame-parameter nil 'vertical-scroll-bars))
+ (cond ((eq sbars 'right)
+ (setq sbars
+ (cons 0 (/ (or (frame-parameter nil 'scroll-bar-width) 14)
+ fcw))))
+ (sbars
+ (setq sbars
+ (cons (/ (or (frame-parameter nil 'scroll-bar-width) 14)
+ fcw)
+ 0)))
+ (t
+ (setq sbars '(0 . 0))))
+ (setq left (- (* (round (/ (1- (/ (+ (window-width)
+ (car sbars) (cdr sbars)
+ (/ (+ (or (car fringes) 0)
+ (or (cadr fringes) 0))
+ fcw))
+ width))
+ 2))
+ width)
+ (car sbars)
+ (/ (or (car fringes) 0) fcw))
+ yoffset (cadr (window-edges))
+ top (max 0 (- (* (max (if (and (boundp 'tool-bar-mode)
+ tool-bar-mode
+ (not (featurep 'gtk))
+ (eq (frame-first-window)
+ (selected-window)))
+ 1 0)
+ (round (/ (1- (/ (+ (1- (window-height))
+ (* 2 yoffset))
+ height))
+ 2)))
+ height)
+ yoffset))
+ ls (/ (or line-spacing 0) fch)
+ height (max 0 (- height ls)))
+ (cond ((>= (- top ls) 1)
+ (insert
+ (propertize
+ " "
+ 'display `(space :width 0 :ascent 100))
+ "\n"
+ (propertize
+ " "
+ 'display `(space :width 0 :height ,(- top ls 1) :ascent 100))
+ "\n"))
+ ((> (- top ls) 0)
+ (insert
+ (propertize
+ " "
+ 'display `(space :width 0 :height ,(- top ls) :ascent 100))
+ "\n")))
+ (if (and (> width 0) (> left 0))
+ (insert (propertize
+ " "
+ 'display `(space :width ,left :height ,height :ascent 0)))
+ (setq width (+ width left)))
+ (when (> width 0)
+ (insert (propertize
+ " "
+ 'display `(space :width ,width :height ,height :ascent 0)
+ 'face `(gnus-splash :stipple ,pixmap))))
+ (goto-char (if (<= (- top ls) 0) (1- (point)) (point-min)))
+ (redraw-frame (selected-frame))
+ (sit-for 0))))
+
+;;; Image functions.
+
+(defun gnus-image-type-available-p (type)
+ (and (fboundp 'image-type-available-p)
+ (image-type-available-p type)
+ (if (fboundp 'display-images-p)
+ (display-images-p)
+ t)))
+
+(defun gnus-create-image (file &optional type data-p &rest props)
+ (let ((face (plist-get props :face)))
+ (when face
+ (setq props (plist-put props :foreground (face-foreground face)))
+ (setq props (plist-put props :background (face-background face))))
+ (ignore-errors
+ (apply 'create-image file type data-p props))))
+
+(defun gnus-put-image (glyph &optional string category)
+ (let ((point (point)))
+ (insert-image glyph (or string "*"))
+ (put-text-property point (point) 'gnus-image-category category)
+ (unless string
+ (put-text-property (1- (point)) (point)
+ 'gnus-image-text-deletable t))
+ glyph))
+
+(defun gnus-remove-image (image &optional category)
+ "Remove the image matching IMAGE and CATEGORY found first."
+ (let ((start (point-min))
+ val end)
+ (while (and (not end)
+ (or (setq val (get-text-property start 'display))
+ (and (setq start
+ (next-single-property-change start 'display))
+ (setq val (get-text-property start 'display)))))
+ (setq end (or (next-single-property-change start 'display)
+ (point-max)))
+ (if (and (equal val image)
+ (equal (get-text-property start 'gnus-image-category)
+ category))
+ (progn
+ (put-text-property start end 'display nil)
+ (when (get-text-property start 'gnus-image-text-deletable)
+ (delete-region start end)))
+ (unless (= end (point-max))
+ (setq start end
+ end nil))))))
+(eval-and-compile
+ (if (fboundp 'set-process-plist)
+ (progn
+ (defalias 'gnus-set-process-plist 'set-process-plist)
+ (defalias 'gnus-process-plist 'process-plist)
+ (defalias 'gnus-process-get 'process-get)
+ (defalias 'gnus-process-put 'process-put))
+ (defun gnus-set-process-plist (process plist)
+ "Replace the plist of PROCESS with PLIST. Returns PLIST."
+ (put 'gnus-process-plist-internal process plist))
+
+ (defun gnus-process-plist (process)
+ "Return the plist of PROCESS."
+ ;; This form works but can't prevent the plist data from
+ ;; growing infinitely.
+ ;;(get 'gnus-process-plist-internal process)
+ (let* ((plist (symbol-plist 'gnus-process-plist-internal))
+ (tem (memq process plist)))
+ (prog1
+ (cadr tem)
+ ;; Remove it from the plist data.
+ (when tem
+ (if (eq plist tem)
+ (progn
+ (setcar plist (caddr plist))
+ (setcdr plist (or (cdddr plist) '(nil))))
+ (setcdr (nthcdr (- (length plist) (length tem) 1) plist)
+ (cddr tem)))))))
+
+ (defun gnus-process-get (process propname)
+ "Return the value of PROCESS' PROPNAME property.
+This is the last value stored with `(gnus-process-put PROCESS PROPNAME VALUE)'."
+ (plist-get (gnus-process-plist process) propname))
+
+ (defun gnus-process-put (process propname value)
+ "Change PROCESS' PROPNAME property to VALUE.
+It can be retrieved with `(gnus-process-get PROCESS PROPNAME)'."
+ (gnus-set-process-plist process
+ (plist-put (gnus-process-plist process)
+ propname value)))))
(provide 'gnus-ems)
-;; Local Variables:
-;; byte-compile-warnings: '(redefine callargs)
-;; End:
-
;;; gnus-ems.el ends here
projects / gnus / blobdiff