1 ;;; buffer.el --- buffer routines taken from C
3 ;; Copyright (C) 1985-1989, 1992-1995, 1997 Free Software Foundation, Inc.
4 ;; Copyright (C) 1995 Sun Microsystems.
5 ;; Copyright (C) 1995, 1996 Ben Wing.
7 ;; Maintainer: XEmacs Development Team
8 ;; Keywords: internal, dumped
10 ;; This file is part of XEmacs.
12 ;; XEmacs is free software; you can redistribute it and/or modify it
13 ;; under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
17 ;; XEmacs is distributed in the hope that it will be useful, but
18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ;; General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with XEmacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, 59 Temple Place - Suite 330,
25 ;; Boston, MA 02111-1307, USA.
27 ;;; Synched up with: FSF 19.30 buffer.c.
31 ;; This file is dumped with XEmacs.
35 (defvar switch-to-buffer-hooks nil
36 "Hooks to run after a recorded buffer switch.")
38 (defun switch-to-buffer (bufname &optional norecord)
39 "Select buffer BUFNAME in the current window.
40 BUFNAME may be a buffer or a buffer name and is created if it did not exist.
41 Optional second arg NORECORD non-nil means do not put this buffer at the
42 front of the list of recently selected ones.
44 WARNING: This is NOT the way to work on another buffer temporarily
45 within a Lisp program! Use `set-buffer' instead. That avoids messing with
46 the window-buffer correspondences."
47 (interactive "BSwitch to buffer: ")
49 ;; #### Doc string should indicate that the buffer name will get
52 (if (eq (minibuffer-window) (selected-window))
53 (error "Cannot switch buffers in minibuffer window"))
54 (if (window-dedicated-p (selected-window))
55 (error "Cannot switch buffers in a dedicated window"))
58 (setq buf (other-buffer (current-buffer)))
59 (setq buf (get-buffer bufname))
62 (setq buf (get-buffer-create bufname))
63 (set-buffer-major-mode buf))))
64 (push-window-configuration)
66 (or norecord (record-buffer buf))
67 (set-window-buffer (if (eq (selected-window) (minibuffer-window))
68 (next-window (minibuffer-window))
72 (or norecord (run-hook-with-args 'switch-to-buffer-hooks buf))
75 (defun pop-to-buffer (bufname &optional not-this-window-p on-frame)
76 "Select buffer BUFNAME in some window, preferably a different one.
77 If BUFNAME is nil, then some other buffer is chosen.
78 If `pop-up-windows' is non-nil, windows can be split to do this.
79 If optional second arg NOT-THIS-WINDOW-P is non-nil, insist on finding
80 another window even if BUFNAME is already visible in the selected window.
81 If optional third arg is non-nil, it is the frame to pop to this
83 If `focus-follows-mouse' is non-nil, keyboard focus is left unchanged."
85 ;; #### Doc string should indicate that the buffer name will get
88 ;; This is twisted. It is evil to throw the keyboard focus around
89 ;; willy-nilly if the user wants focus-follows-mouse.
90 (let ((oldbuf (current-buffer))
93 (setq buf (other-buffer (current-buffer)))
94 (setq buf (get-buffer bufname))
97 (setq buf (get-buffer-create bufname))
98 (set-buffer-major-mode buf))))
99 (push-window-configuration)
101 (setq window (display-buffer buf not-this-window-p on-frame))
102 (setq frame (window-frame window))
103 ;; if the display-buffer hook decided to show this buffer in another
104 ;; frame, then select that frame, (unless obeying focus-follows-mouse -sb).
105 (if (and (not focus-follows-mouse)
106 (not (eq frame (selected-frame))))
107 (select-frame frame))
109 (if (and focus-follows-mouse
111 (not (eq on-frame (selected-frame))))
113 ;; select-window will modify the internal keyboard focus of XEmacs
114 (select-window window))
117 ;;; buffer.el ends here