1 ;;; lselect.el --- Lucid interface to X Selections
3 ;; Copyright (C) 1990, 1993 Free Software Foundation, Inc.
6 ;; Keywords: emulations
8 ;; This won't completely work until we support or emulate Lucid-style extents.
9 ;; Based on Lucid's selection code.
11 ;; This file is part of GNU Emacs.
13 ;; GNU Emacs is free software; you can redistribute it and/or modify
14 ;; it under the terms of the GNU General Public License as published by
15 ;; the Free Software Foundation; either version 2, or (at your option)
18 ;; GNU Emacs is distributed in the hope that it will be useful,
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ;; GNU General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs; see the file COPYING. If not, write to the
25 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
26 ;; Boston, MA 02111-1307, USA.
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.)
36 (defalias 'x-get-cutbuffer
'x-get-cut-buffer
)
37 (defalias 'x-store-cutbuffer
'x-set-cut-buffer
)
39 (or (facep 'primary-selection
)
40 (make-face 'primary-selection
))
42 (or (facep 'secondary-selection
)
43 (make-face 'secondary-selection
))
45 (defun x-get-secondary-selection ()
46 "Return text selected from some X window."
47 (x-get-selection-internal 'SECONDARY
'STRING
))
49 (defvar primary-selection-extent nil
50 "The extent of the primary selection; don't use this.")
52 (defvar secondary-selection-extent nil
53 "The extent of the secondary selection; don't use this.")
56 (defun x-select-make-extent-for-selection (selection previous-extent face
)
57 ;; Given a selection, this makes an extent in the buffer which holds that
58 ;; selection, for highlighting purposes. If the selection isn't associated
59 ;; with a buffer, this does nothing.
61 (valid (and (extentp previous-extent
)
62 (extent-buffer previous-extent
)
63 (buffer-name (extent-buffer previous-extent
))))
65 (cond ((stringp selection
)
66 ;; if we're selecting a string, lose the previous extent used
67 ;; to highlight the selection.
70 (setq start
(min (car selection
) (cdr selection
))
71 end
(max (car selection
) (cdr selection
))
73 (eq (marker-buffer (car selection
))
74 (extent-buffer previous-extent
)))
75 buffer
(marker-buffer (car selection
))))
77 (setq start
(extent-start-position selection
)
78 end
(extent-end-position selection
)
80 (eq (extent-buffer selection
)
81 (extent-buffer previous-extent
)))
82 buffer
(extent-buffer selection
)))
85 (extentp previous-extent
)
86 (extent-buffer previous-extent
)
87 (buffer-name (extent-buffer previous-extent
)))
88 (delete-extent previous-extent
))
94 (set-extent-endpoints previous-extent start end
)
95 (setq previous-extent
(make-extent start end buffer
))
96 ;; use same priority as mouse-highlighting so that conflicts between
97 ;; the selection extent and a mouse-highlighted extent are resolved
98 ;; by the usual size-and-endpoint-comparison method.
99 (set-extent-priority previous-extent mouse-highlight-priority
)
100 (set-extent-face previous-extent face
)))))
103 (defun x-own-selection (selection &optional type
)
104 "Make a primary X Selection of the given argument.
105 The argument may be a string, a cons of two markers, or an extent.
106 In the latter cases the selection is considered to be the text
107 between the markers, or the between extents endpoints."
108 (interactive (if (not current-prefix-arg
)
109 (list (read-string "Store text for pasting: "))
110 (list (cons ;; these need not be ordered.
111 (copy-marker (point-marker))
112 (copy-marker (mark-marker))))))
113 (or type
(setq type
'PRIMARY
))
114 (x-set-selection selection type
)
115 (cond ((eq type
'PRIMARY
)
116 (setq primary-selection-extent
117 (x-select-make-extent-for-selection
118 selection primary-selection-extent
'primary-selection
)))
119 ((eq type
'SECONDARY
)
120 (setq secondary-selection-extent
121 (x-select-make-extent-for-selection
122 selection secondary-selection-extent
'secondary-selection
))))
126 (defun x-own-secondary-selection (selection &optional type
)
127 "Make a secondary X Selection of the given argument. The argument may be a
128 string or a cons of two markers (in which case the selection is considered to
129 be the text between those markers.)"
130 (interactive (if (not current-prefix-arg
)
131 (list (read-string "Store text for pasting: "))
132 (list (cons ;; these need not be ordered.
133 (copy-marker (point-marker))
134 (copy-marker (mark-marker))))))
135 (x-own-selection selection
'SECONDARY
))
138 (defun x-own-clipboard (string)
139 "Paste the given string to the X Clipboard."
140 (x-own-selection string
'CLIPBOARD
))
143 (defun x-disown-selection (&optional secondary-p
)
144 "Assuming we own the selection, disown it. With an argument, discard the
145 secondary selection instead of the primary selection."
146 (x-disown-selection-internal (if secondary-p
'SECONDARY
'PRIMARY
)))
148 (defun x-dehilight-selection (selection)
149 "for use as a value of x-lost-selection-hooks."
150 (cond ((eq selection
'PRIMARY
)
151 (if primary-selection-extent
152 (let ((inhibit-quit t
))
153 (delete-extent primary-selection-extent
)
154 (setq primary-selection-extent nil
)))
155 (if zmacs-regions
(zmacs-deactivate-region)))
156 ((eq selection
'SECONDARY
)
157 (if secondary-selection-extent
158 (let ((inhibit-quit t
))
159 (delete-extent secondary-selection-extent
)
160 (setq secondary-selection-extent nil
)))))
163 (setq x-lost-selection-hooks
'x-dehilight-selection
)
165 (defun x-notice-selection-requests (selection type successful
)
166 "for possible use as the value of x-sent-selection-hooks."
168 (message "Selection request failed to convert %s to %s"
170 (message "Sent selection %s as %s" selection type
)))
172 (defun x-notice-selection-failures (selection type successful
)
173 "for possible use as the value of x-sent-selection-hooks."
175 (message "Selection request failed to convert %s to %s"
178 ;(setq x-sent-selection-hooks 'x-notice-selection-requests)
179 ;(setq x-sent-selection-hooks 'x-notice-selection-failures)
182 ;; Random utility functions
184 (defun x-kill-primary-selection ()
185 "If there is a selection, delete the text it covers, and copy it to
186 both the kill ring and the Clipboard."
188 (or (x-selection-owner-p) (error "emacs does not own the primary selection"))
189 (setq last-command nil
)
190 (or primary-selection-extent
191 (error "the primary selection is not an extent?"))
193 (set-buffer (extent-buffer primary-selection-extent
))
194 (kill-region (extent-start-position primary-selection-extent
)
195 (extent-end-position primary-selection-extent
)))
196 (x-disown-selection nil
))
198 (defun x-delete-primary-selection ()
199 "If there is a selection, delete the text it covers *without* copying it to
200 the kill ring or the Clipboard."
202 (or (x-selection-owner-p) (error "emacs does not own the primary selection"))
203 (setq last-command nil
)
204 (or primary-selection-extent
205 (error "the primary selection is not an extent?"))
207 (set-buffer (extent-buffer primary-selection-extent
))
208 (delete-region (extent-start-position primary-selection-extent
)
209 (extent-end-position primary-selection-extent
)))
210 (x-disown-selection nil
))
212 (defun x-copy-primary-selection ()
213 "If there is a selection, copy it to both the kill ring and the Clipboard."
215 (setq last-command nil
)
216 (or (x-selection-owner-p) (error "emacs does not own the primary selection"))
217 (or primary-selection-extent
218 (error "the primary selection is not an extent?"))
220 (set-buffer (extent-buffer primary-selection-extent
))
221 (copy-region-as-kill (extent-start-position primary-selection-extent
)
222 (extent-end-position primary-selection-extent
))))
224 (defun x-yank-clipboard-selection ()
225 "If someone owns a Clipboard selection, insert it at point."
227 (setq last-command nil
)
228 (let ((clip (x-get-clipboard)))
229 (or clip
(error "there is no clipboard selection"))
235 ;;; arch-tag: 92fa54d4-c5d1-4e9b-ad58-cf1e13930556
236 ;;; lselect.el ends here