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comparison lisp/x-select.el @ 428:3ecd8885ac67 r21-2-22

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author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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427:0a0253eac470 428:3ecd8885ac67
1 ;;; x-select.el --- Lisp interface to X Selections.
2
3 ;; Copyright (C) 1990, 1997 Free Software Foundation, Inc.
4 ;; Copyright (C) 1995 Sun Microsystems.
5
6 ;; Maintainer: XEmacs Development Team
7 ;; Keywords: extensions, dumped
8
9 ;; This file is part of XEmacs.
10
11 ;; XEmacs is free software; you can redistribute it and/or modify it
12 ;; under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; any later version.
15
16 ;; XEmacs is distributed in the hope that it will be useful, but
17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ;; General Public License for more details.
20
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with XEmacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
25
26 ;;; Synched up with: FSF 19.30 (select.el).
27
28 ;;; Commentary:
29
30 ;; This file is dumped with XEmacs (when X support is compiled in).
31
32 ;; The selection code requires us to use certain symbols whose names are
33 ;; all upper-case; this may seem tasteless, but it makes there be a 1:1
34 ;; correspondence between these symbols and X Atoms (which are upcased).
35
36 ;;; Code:
37
38 (define-obsolete-function-alias 'x-selection-exists-p 'selection-exists-p)
39 (define-obsolete-function-alias 'x-selection-owner-p 'selection-owner-p)
40 (define-obsolete-variable-alias 'x-selection-converter-alist 'selection-converter-alist)
41 (define-obsolete-variable-alias 'x-lost-selection-hooks 'lost-selection-hooks)
42 (define-obsolete-variable-alias 'x-selected-text-type 'selected-text-type)
43 (define-obsolete-function-alias 'x-valid-simple-selection-p 'valid-simple-selection-p)
44 (define-obsolete-function-alias 'x-own-selection 'own-selection)
45 (define-obsolete-function-alias 'x-disown-selection 'disown-selection)
46 (define-obsolete-function-alias 'x-delete-primary-selection 'delete-primary-selection)
47 (define-obsolete-function-alias 'x-copy-primary-selection 'copy-primary-selection)
48 (define-obsolete-function-alias 'x-kill-primary-selection 'kill-primary-selection)
49 (define-obsolete-function-alias 'x-select-make-extent-for-selection
50 'select-make-extent-for-selection)
51 (define-obsolete-function-alias 'x-cut-copy-clear-internal 'cut-copy-clear-internal)
52 (define-obsolete-function-alias 'x-get-selection 'get-selection)
53 (define-obsolete-function-alias 'x-get-clipboard 'get-clipboard)
54 (define-obsolete-function-alias 'x-yank-clipboard-selection
55 'yank-clipboard-selection)
56 (define-obsolete-function-alias 'x-disown-selection-internal
57 'disown-selection-internal)
58
59 (defun x-get-secondary-selection ()
60 "Return text selected from some X window."
61 (get-selection 'SECONDARY))
62
63 (defun x-own-secondary-selection (selection &optional type)
64 "Make a secondary X Selection of the given argument. The argument may be a
65 string or a cons of two markers (in which case the selection is considered to
66 be the text between those markers)."
67 (interactive (if (not current-prefix-arg)
68 (list (read-string "Store text for pasting: "))
69 (list (cons ;; these need not be ordered.
70 (copy-marker (point-marker))
71 (copy-marker (mark-marker))))))
72 (own-selection selection 'SECONDARY))
73
74 (defun x-notice-selection-requests (selection type successful)
75 "for possible use as the value of x-sent-selection-hooks."
76 (if (not successful)
77 (message "Selection request failed to convert %s to %s"
78 selection type)
79 (message "Sent selection %s as %s" selection type)))
80
81 (defun x-notice-selection-failures (selection type successful)
82 "for possible use as the value of x-sent-selection-hooks."
83 (or successful
84 (message "Selection request failed to convert %s to %s"
85 selection type)))
86
87 ;(setq x-sent-selection-hooks 'x-notice-selection-requests)
88 ;(setq x-sent-selection-hooks 'x-notice-selection-failures)
89
90
91 ;;; Selections in killed buffers
92 ;;; this function is called by kill-buffer as if it were on the
93 ;;; kill-buffer-hook (though it isn't really).
94
95 (defun xselect-kill-buffer-hook ()
96 ;; Probably the right thing is to write a C function to return a list
97 ;; of the selections which emacs owns, since it could conceivably own
98 ;; a user-defined selection type that we've never heard of.
99 (xselect-kill-buffer-hook-1 'PRIMARY)
100 (xselect-kill-buffer-hook-1 'SECONDARY)
101 (xselect-kill-buffer-hook-1 'CLIPBOARD))
102
103 (defun xselect-kill-buffer-hook-1 (selection)
104 (let (value)
105 (if (and (selection-owner-p selection)
106 (setq value (get-selection-internal selection '_EMACS_INTERNAL))
107 ;; The _EMACS_INTERNAL selection type has a converter registered
108 ;; for it that does no translation. This only works if emacs is
109 ;; requesting the selection from itself. We could have done this
110 ;; by writing a C function to return the raw selection data, and
111 ;; that might be the right way to do this, but this was easy.
112 (or (and (consp value)
113 (markerp (car value))
114 (eq (current-buffer) (marker-buffer (car value))))
115 (and (extent-live-p value)
116 (eq (current-buffer) (extent-object value)))
117 (and (extentp value) (not (extent-live-p value)))))
118 (disown-selection-internal selection))))
119
120
121 ;;; Cut Buffer support
122
123 ;;; FSF name x-get-cut-buffer
124 (defun x-get-cutbuffer (&optional which-one)
125 "Return the value of one of the 8 X server cut buffers.
126 Optional arg WHICH-ONE should be a number from 0 to 7, defaulting to 0.
127 Cut buffers are considered obsolete; you should use selections instead.
128 This function does nothing if support for cut buffers was not compiled
129 into Emacs."
130 (and (fboundp 'x-get-cutbuffer-internal)
131 (x-get-cutbuffer-internal
132 (if which-one
133 (aref [CUT_BUFFER0 CUT_BUFFER1 CUT_BUFFER2 CUT_BUFFER3
134 CUT_BUFFER4 CUT_BUFFER5 CUT_BUFFER6 CUT_BUFFER7]
135 which-one)
136 'CUT_BUFFER0))))
137
138 ;;; FSF name x-set-cut-buffer
139 (defun x-store-cutbuffer (string &optional push)
140 "Store STRING into the X server's primary cut buffer.
141 If PUSH is non-nil, also rotate the cut buffers:
142 this means the previous value of the primary cut buffer moves the second
143 cut buffer, and the second to the third, and so on (there are 8 buffers.)
144 Cut buffers are considered obsolete; you should use selections instead.
145 This function does nothing if support for cut buffers was not compiled
146 into Emacs."
147 (and (fboundp 'x-store-cutbuffer-internal)
148 (progn
149 ;; Check the data type of STRING.
150 (substring string 0 0)
151 (if push
152 (x-rotate-cutbuffers-internal 1))
153 (x-store-cutbuffer-internal 'CUT_BUFFER0 string))))
154
155
156 ;FSFmacs (provide 'select)
157
158 ;;; x-select.el ends here.