X-Git-Url: http://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fgnus-ems.el;h=e1e37eb37c2b7d57012018843b5f08638d01a534;hb=d173e96bece12e3b0d343c8c0d138289de56e111;hp=faa7dc758d105f51785e7d8b9ca9d8af94fc6223;hpb=ac52532b0f58bae55f94692c65cddd287a468efc;p=gnus

diff --git a/lisp/gnus-ems.el b/lisp/gnus-ems.el
index faa7dc758..e1e37eb37 100644
--- a/lisp/gnus-ems.el
+++ b/lisp/gnus-ems.el
@@ -1,15 +1,17 @@
 ;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
-;; Copyright (C) 1995 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
@@ -17,184 +19,340 @@
 ;; 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, 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
 ;;; Code:
 
+(eval-when-compile
+  (require 'cl)
+  (require 'ring))
+
+;;; Function aliases later to be redefined for XEmacs usage.
+
 (defvar gnus-mouse-2 [mouse-2])
-(defvar gnus-easymenu 'easymenu)
-(defvar gnus-group-mode-hook ())
-(defvar gnus-summary-mode-hook ())
-(defvar gnus-article-mode-hook ())
-
-;; We do not byte-compile this file, because error messages are such a
-;; bore.  
-
-(eval
- '(cond 
-   ((string-match "XEmacs\\|Lucid" emacs-version)
-    ;; XEmacs definitions.
-
-    (setq gnus-mouse-2 [button2])
-    (setq gnus-easymenu 'auc-menu)
-
-    (or (memq 'underline (list-faces))
-	(funcall (intern "make-face") 'underline))
-    ;; Must avoid calling set-face-underline-p directly, because it
-    ;; is a defsubst in emacs19, and will make the .elc files non
-    ;; portable!
-    (or (face-differs-from-default-p 'underline)
-  	(funcall 'set-face-underline-p 'underline t))
-    (or (fboundp 'set-text-properties)
-	(defun set-text-properties (start end props &optional buffer)
-	  (if props
-	      (put-text-property start end (car props) (cdr props) buffer)
-	    (remove-text-properties start end ()))))
-    
-    (or (fboundp 'make-overlay) (fset 'make-overlay 'make-extent))
-    (or (fboundp 'overlay-put) (fset 'overlay-put 'set-extent-property))
-    (or (fboundp 'move-overlay) 
-        (defun move-overlay (extent start end &optional buffer)
-          (set-extent-endpoints extent start end)))
-    (or (boundp 'standard-display-table) (setq standard-display-table nil))
-    (or (boundp 'read-event) (fset 'read-event 'next-command-event))
-
-    (if (not gnus-visual)
-	()
-      (setq gnus-group-mode-hook
-	    (cons
-	     (lambda ()
-	       (easy-menu-add gnus-group-reading-menu)
-	       (easy-menu-add gnus-group-group-menu)
-	       (easy-menu-add gnus-group-post-menu)
-	       (easy-menu-add gnus-group-misc-menu)
-	       (gnus-install-mouse-tracker)) 
-	     gnus-group-mode-hook))
-      (setq gnus-summary-mode-hook
-	    (cons
-	     (lambda ()
-	       (easy-menu-add gnus-summary-mark-menu)
-	       (easy-menu-add gnus-summary-move-menu)
-	       (easy-menu-add gnus-summary-article-menu)
-	       (easy-menu-add gnus-summary-thread-menu)
-	       (easy-menu-add gnus-summary-misc-menu)
-	       (easy-menu-add gnus-summary-post-menu)
-	       (easy-menu-add gnus-summary-kill-menu)
-	       (gnus-install-mouse-tracker)) 
-	     gnus-summary-mode-hook))
-      (setq gnus-article-mode-hook
-	    (cons
-	     (lambda ()
-	       (easy-menu-add gnus-article-article-menu)
-	       (easy-menu-add gnus-article-treatment-menu))
-	     gnus-article-mode-hook)))
-
-    (defun gnus-install-mouse-tracker ()
-      (require 'mode-motion)
-      (setq mode-motion-hook 'mode-motion-highlight-line)))
-
-   ((and (not (string-match "28.9" emacs-version)) 
-	 (not (string-match "29" emacs-version)))
-    (setq gnus-hidden-properties '(invisible t))
-    (or (fboundp 'buffer-substring-no-properties)
-	(defun buffer-substring-no-properties (beg end)
-	  (format "%s" (buffer-substring beg end)))))
-   
-   ((boundp 'MULE)
-    (provide 'gnusutil))
-   
-   ))
+(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)
+      '("--**-" . "-----")
+    '("**" "--")))
 
 (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)))
-  )
+  (autoload 'gnus-xmas-define "gnus-xmas")
+  (autoload 'gnus-xmas-redefine "gnus-xmas"))
+
+(autoload 'gnus-get-buffer-create "gnus")
+(autoload 'nnheader-find-etc-directory "nnheader")
+(autoload 'smiley-region "smiley")
+
+(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)))))
+
+;;; 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-to-width valstr ,max-width)
+       valstr)))
+
+(eval-and-compile
+  (if (featurep 'xemacs)
+      (gnus-xmas-define)
+    (defvar gnus-mouse-face-prop 'mouse-face
+      "Property used for highlighting mouse regions.")))
+
+(defvar gnus-tmp-unread)
+(defvar gnus-tmp-replied)
+(defvar gnus-tmp-score-char)
+(defvar gnus-tmp-indentation)
+(defvar gnus-tmp-opening-bracket)
+(defvar gnus-tmp-lines)
+(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)
-    ;; XEmacs definitions.
-    (fset 'gnus-set-mouse-face (lambda (string) string))
-
-    (defun gnus-summary-make-display-table ()
-      )
-
-    (defun gnus-highlight-selected-summary ()
-      ;; Added by Per Abrahamsen <amanda@iesd.auc.dk>.
-      ;; Highlight selected article in summary buffer
-      (if gnus-summary-selected-face
-	  (save-excursion
-	    (let* ((beg (progn (beginning-of-line) (point)))
-		   (end (progn (end-of-line) (point)))
-		   (to (max 1 (1- (or (previous-single-property-change
-				       end 'mouse-face nil beg) end))))
-		   (from (1+ (or (next-single-property-change 
-				  beg 'mouse-face nil end) beg))))
-	      (if (< to beg)
-		  (progn
-		    (setq from beg)
-		    (setq to end)))
-	      (if gnus-newsgroup-selected-overlay
- 		  (delete-extent gnus-newsgroup-selected-overlay))
- 	      (setq gnus-newsgroup-selected-overlay
- 		    (make-extent from to))
- 	      (set-extent-face gnus-newsgroup-selected-overlay
- 			       gnus-summary-selected-face)))))
-
-    )
-   ((boundp 'MULE)
-    ;; Mule definitions
-    (if (not (fboundp 'truncate-string))
-	(defun truncate-string (str width)
-	  (let ((w (string-width str))
-		(col 0) (idx 0) (p-idx 0) chr)
-	    (if (<= w width)
-		str
-	      (while (< col width)
-		(setq chr (aref str idx)
-		      col (+ col (char-width chr))
-		      p-idx idx
-		      idx (+ idx (char-bytes chr))
-		      ))
-	      (substring str 0 (if (= col width)
-				   idx
-				 p-idx))
-	      )))
-      )
-    (defalias 'gnus-truncate-string 'truncate-string)
-
-    (defun gnus-format-max-width (form length)
-      (let* ((val (eval form))
-	     (valstr (if (numberp val) (int-to-string val) val)))
-	(if (> (length valstr) length)
-	    (truncate-string valstr length)
-	  valstr)))
-
-    (defun gnus-summary-make-display-table ())
-    )
-   ))
+  (cond
+   ((featurep 'xemacs)
+    (gnus-xmas-redefine))
 
-(provide 'gnus-ems)
+   ((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.
+
+    ;; 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))))
 
-;; Local Variables:
-;; byte-compile-warnings: nil
-;; End:
+    (defun gnus-summary-line-format-spec ()
+      (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-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")))))
+
+;; 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
+  ;; XEmacs does not have window-inside-pixel-edges
+  (defalias 'gnus-window-inside-pixel-edges
+    (if (fboundp 'window-inside-pixel-edges)
+        'window-inside-pixel-edges
+      'window-pixel-edges))
+
+  (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)
 
 ;;; gnus-ems.el ends here