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comparison lisp/buffer.el @ 209:41ff10fd062f r20-4b3

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Import from CVS: tag r20-4b3
author cvs
date Mon, 13 Aug 2007 10:04:58 +0200
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children 262b8bb4a523
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208:f427b8ec4379 209:41ff10fd062f
1 ;;; buffer.el --- buffer routines taken from C
2
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.
6
7 ;; Maintainer: XEmacs Development Team
8 ;; Keywords: internal, dumped
9
10 ;; This file is part of XEmacs.
11
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)
15 ;; any later version.
16
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.
21
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.
26
27 ;;; Synched up with: FSF 19.30 buffer.c.
28
29 ;;; Commentary:
30
31 ;; This file is dumped with XEmacs.
32
33 ;;; Code:
34
35 (defun switch-to-buffer (bufname &optional norecord)
36 "Select buffer BUFNAME in the current window.
37 BUFNAME may be a buffer or a buffer name.
38 Optional second arg NORECORD non-nil means
39 do not put this buffer at the front of the list of recently selected ones.
40
41 WARNING: This is NOT the way to work on another buffer temporarily
42 within a Lisp program! Use `set-buffer' instead. That avoids messing with
43 the window-buffer correspondences."
44 (interactive "BSwitch to buffer: ")
45 ;; #ifdef I18N3
46 ;; #### Doc string should indicate that the buffer name will get
47 ;; translated.
48 ;; #endif
49 (if (eq (minibuffer-window) (selected-window))
50 (error "Cannot switch buffers in minibuffer window"))
51 (if (window-dedicated-p (selected-window))
52 (error "Cannot switch buffers in a dedicated window"))
53 (let (buf)
54 (if (null bufname)
55 (setq buf (other-buffer (current-buffer)))
56 (setq buf (get-buffer bufname))
57 (if (null buf)
58 (progn
59 (setq buf (get-buffer-create bufname))
60 (set-buffer-major-mode buf))))
61 (push-window-configuration)
62 (set-buffer buf)
63 (or norecord (record-buffer buf))
64 (set-window-buffer (if (eq (selected-window) (minibuffer-window))
65 (next-window (minibuffer-window))
66 (selected-window))
67 buf)
68 buf))
69
70 (defun pop-to-buffer (bufname &optional not-this-window-p on-frame)
71 "Select buffer BUFNAME in some window, preferably a different one.
72 If BUFNAME is nil, then some other buffer is chosen.
73 If `pop-up-windows' is non-nil, windows can be split to do this.
74 If optional second arg NOT-THIS-WINDOW-P is non-nil, insist on finding
75 another window even if BUFNAME is already visible in the selected window.
76 If optional third arg is non-nil, it is the frame to pop to this
77 buffer on.
78 If `focus-follows-mouse' is non-nil, keyboard focus is left unchanged."
79 ;; #ifdef I18N3
80 ;; #### Doc string should indicate that the buffer name will get
81 ;; translated.
82 ;; #endif
83 ;; This is twisted. It is evil to throw the keyboard focus around
84 ;; willy-nilly if the user wants focus-follows-mouse.
85 (let ((oldbuf (current-buffer))
86 buf window frame)
87 (if (null bufname)
88 (setq buf (other-buffer (current-buffer)))
89 (setq buf (get-buffer bufname))
90 (if (null buf)
91 (progn
92 (setq buf (get-buffer-create bufname))
93 (set-buffer-major-mode buf))))
94 (push-window-configuration)
95 (set-buffer buf)
96 (setq window (display-buffer buf not-this-window-p on-frame))
97 (setq frame (window-frame window))
98 ;; if the display-buffer hook decided to show this buffer in another
99 ;; frame, then select that frame, (unless obeying focus-follows-mouse -sb).
100 (if (and (not focus-follows-mouse)
101 (not (eq frame (selected-frame))))
102 (select-frame frame))
103 (record-buffer buf)
104 (if (and focus-follows-mouse
105 on-frame
106 (not (eq on-frame (selected-frame))))
107 (set-buffer oldbuf)
108 ;; select-window will modify the internal keyboard focus of XEmacs
109 (select-window window))
110 buf))
111
112 ;;; buffer.el ends here