[Emacs-diffs] Changes to emacs/lisp/obsolete/x-menu.el [lexbind]

[Miles Bader]

Index: emacs/lisp/obsolete/x-menu.el
diff -c /dev/null emacs/lisp/obsolete/x-menu.el:1.1.8.1
*** /dev/null   Tue Oct 14 19:52:14 2003
--- emacs/lisp/obsolete/x-menu.el       Tue Oct 14 19:51:32 2003
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*** 0 ****
--- 1,150 ----
+ ;;; x-menu.el --- menu support for X
+ 
+ ;; Copyright (C) 1986 Free Software Foundation, Inc.
+ 
+ ;; This file is part of GNU Emacs.
+ 
+ ;; 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.
+ 
+ ;; GNU Emacs 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 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.
+ 
+ ;;; Commentary:
+ 
+ ;;; Code:
+ 
+ (defun x-menu-mode ()
+   "Major mode for creating permanent menus for use with X.
+ These menus are implemented entirely in Lisp; popup menus, implemented
+ with x-popup-menu, are implemented using XMenu primitives."
+   (make-local-variable 'x-menu-items-per-line)
+   (make-local-variable 'x-menu-item-width)
+   (make-local-variable 'x-menu-items-alist)
+   (make-local-variable 'x-process-mouse-hook)
+   (make-local-variable 'x-menu-assoc-buffer)
+   (setq buffer-read-only t)
+   (setq truncate-lines t)
+   (setq x-process-mouse-hook 'x-menu-pick-entry)
+   (setq mode-line-buffer-identification '("MENU: %32b")))
+ 
+ (defvar x-menu-max-width 0)
+ (defvar x-menu-items-per-line 0)
+ (defvar x-menu-item-width 0)
+ (defvar x-menu-items-alist nil)
+ (defvar x-menu-assoc-buffer nil)
+ 
+ (defvar x-menu-item-spacing 1
+   "*Minimum horizontal spacing between objects in a permanent X menu.")
+ 
+ (defun x-menu-create-menu (name)
+   "Create a permanent X menu.
+ Returns an item which should be used as a
+ menu object whenever referring to the menu."
+   (let ((old (current-buffer))
+       (buf (get-buffer-create name)))
+     (set-buffer buf)
+     (x-menu-mode)
+     (setq x-menu-assoc-buffer old)
+     (set-buffer old)
+     buf))
+ 
+ (defun x-menu-change-associated-buffer (menu buffer)
+   "Change associated buffer of MENU to BUFFER.
+ BUFFER should be a buffer object."
+   (let ((old (current-buffer)))
+     (set-buffer menu)
+     (setq x-menu-assoc-buffer buffer)
+     (set-buffer old)))
+ 
+ (defun x-menu-add-item (menu item binding)
+   "Add to MENU an item with name ITEM, associated with BINDING.
+ Following a sequence of calls to x-menu-add-item, a call to x-menu-compute
+ should be performed before the menu will be made available to the user.
+ 
+ BINDING should be a function of one argument, which is the numerical
+ button/key code as defined in x-menu.el."
+   (let ((old (current-buffer))
+       elt)
+     (set-buffer menu)
+     (if (setq elt (assoc item x-menu-items-alist))
+       (rplacd elt binding)
+       (setq x-menu-items-alist (append x-menu-items-alist
+                                      (list (cons item binding)))))
+     (set-buffer old)
+     item))
+ 
+ (defun x-menu-delete-item (menu item)
+   "Delete from MENU the item named ITEM.
+ Call `x-menu-compute' before making the menu available to the user."
+   (let ((old (current-buffer))
+       elt)
+     (set-buffer menu)
+     (if (setq elt (assoc item x-menu-items-alist))
+       (rplaca elt nil))
+     (set-buffer old)
+     item))
+ 
+ (defun x-menu-activate (menu)
+   "Compute all necessary parameters for MENU.
+ This must be called whenever a menu is modified before it is made
+ available to the user.  This also creates the menu itself."
+   (let ((buf (current-buffer)))
+     (pop-to-buffer menu)
+     (let (buffer-read-only)
+       (setq x-menu-max-width (1- (frame-width)))
+       (setq x-menu-item-width 0)
+       (let (items-head
+           (items-tail x-menu-items-alist))
+       (while items-tail
+         (if (car (car items-tail))
+             (progn (setq items-head (cons (car items-tail) items-head))
+                    (setq x-menu-item-width
+                          (max x-menu-item-width
+                               (length (car (car items-tail)))))))
+         (setq items-tail (cdr items-tail)))
+       (setq x-menu-items-alist (reverse items-head)))
+       (setq x-menu-item-width (+ x-menu-item-spacing x-menu-item-width))
+       (setq x-menu-items-per-line
+           (max 1 (/ x-menu-max-width x-menu-item-width)))
+       (erase-buffer)
+       (let ((items-head x-menu-items-alist))
+       (while items-head
+         (let ((items 0))
+           (while (and items-head
+                       (<= (setq items (1+ items)) x-menu-items-per-line))
+             (insert (format (concat "%"
+                                     (int-to-string x-menu-item-width) "s")
+                             (car (car items-head))))
+             (setq items-head (cdr items-head))))
+         (insert ?\n)))
+       (shrink-window (max 0
+                         (- (window-height)
+                            (1+ (count-lines (point-min) (point-max))))))
+       (goto-char (point-min)))
+     (pop-to-buffer buf)))
+ 
+ (defun x-menu-pick-entry (position event)
+   "Internal function for dispatching on mouse/menu events"
+   (let*       ((x (min (1- x-menu-items-per-line)
+                (/ (current-column) x-menu-item-width)))
+        (y (- (count-lines (point-min) (point))
+              (if (zerop (current-column)) 0 1)))
+        (item (+ x (* y x-menu-items-per-line)))
+        (litem (cdr (nth item x-menu-items-alist))))
+     (and litem (funcall litem event)))
+   (pop-to-buffer x-menu-assoc-buffer))
+ 
+ (provide 'x-menu)
+ 
+ ;;; arch-tag: 889f6d49-c01b-49e7-aaef-b0c6966c2961
+ ;;; x-menu.el ends here