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