annotate lisp/x-select.el @ 5067:7d7ae8db0341

add functions `stable-union' and `stable-intersection' to do stable set operations -------------------- ChangeLog entries follow: -------------------- lisp/ChangeLog addition: 2010-02-22 Ben Wing <ben@xemacs.org> * cl-seq.el: * cl-seq.el (stable-union): New. * cl-seq.el (stable-intersection): New. New functions to do stable set operations, i.e. preserve the order of the elements in the argument lists, and prefer LIST1 over LIST2 when ordering the combined result. The result looks as much like LIST1 as possible, followed (in the case of `stable-union') by any necessary elements from LIST2, in order. This is contrary to `union' and `intersection', which are not required to be order- preserving and are not -- they prefer LIST2 and output results in backwards order.
author Ben Wing <ben@xemacs.org>
date Mon, 22 Feb 2010 21:23:02 -0600
parents 5e906dd5c3e9
children 308d34e9f07d
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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 (globally-declare-fboundp
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39 '(x-get-cutbuffer-internal
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40 x-rotate-cutbuffers-internal x-store-cutbuffer-internal))
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41
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42 (define-obsolete-function-alias 'x-selection-exists-p 'selection-exists-p)
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43 (define-obsolete-function-alias 'x-selection-owner-p 'selection-owner-p)
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44 (define-obsolete-variable-alias 'x-selection-converter-alist 'selection-converter-alist)
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45 (define-obsolete-variable-alias 'x-lost-selection-hooks 'lost-selection-hooks)
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46 (define-obsolete-variable-alias 'x-selected-text-type 'selection-preferred-types)
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47 (define-obsolete-function-alias 'x-valid-simple-selection-p 'valid-simple-selection-p)
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48 (define-obsolete-function-alias 'x-own-selection 'own-selection)
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49 (define-obsolete-function-alias 'x-disown-selection 'disown-selection)
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50 (define-obsolete-function-alias 'x-delete-primary-selection 'delete-primary-selection)
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51 (define-obsolete-function-alias 'x-copy-primary-selection 'copy-primary-selection)
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52 (define-obsolete-function-alias 'x-kill-primary-selection 'kill-primary-selection)
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53 (define-obsolete-function-alias 'x-select-make-extent-for-selection
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54 'select-make-extent-for-selection)
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55 (define-obsolete-function-alias 'x-cut-copy-clear-internal 'cut-copy-clear-internal)
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56 (define-obsolete-function-alias 'x-get-selection 'get-selection)
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57 (define-obsolete-function-alias 'x-get-clipboard 'get-clipboard)
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58 (define-obsolete-function-alias 'x-yank-clipboard-selection
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59 'yank-clipboard-selection)
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60 (define-obsolete-function-alias 'x-disown-selection-internal
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61 'disown-selection-internal)
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62
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63 (defun x-get-secondary-selection ()
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64 "Return text selected from some X window."
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65 (get-selection 'SECONDARY))
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66
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67 (defun x-own-secondary-selection (selection &optional type)
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68 "Make a secondary X Selection of the given argument. The argument may be a
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69 string or a cons of two markers (in which case the selection is considered to
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70 be the text between those markers)."
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71 (interactive (if (not current-prefix-arg)
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72 (list (read-string "Store text for pasting: "))
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73 (list (cons ;; these need not be ordered.
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74 (copy-marker (point-marker))
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75 (copy-marker (mark-marker))))))
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76 (own-selection selection 'SECONDARY))
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77
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78 (defun x-notice-selection-requests (selection type successful)
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79 "for possible use as the value of `x-sent-selection-hooks'."
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80 (if (not successful)
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81 (message "Selection request failed to convert %s to %s"
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82 selection type)
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83 (message "Sent selection %s as %s" selection type)))
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84
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85 (defun x-notice-selection-failures (selection type successful)
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86 "for possible use as the value of `x-sent-selection-hooks'."
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87 (or successful
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88 (message "Selection request failed to convert %s to %s"
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89 selection type)))
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90
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91 ;(setq x-sent-selection-hooks 'x-notice-selection-requests)
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92 ;(setq x-sent-selection-hooks 'x-notice-selection-failures)
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93
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94
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95 ;;; Cut Buffer support
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96
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97 ;;; FSF name x-get-cut-buffer
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98 (defun x-get-cutbuffer (&optional which-one)
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99 "Return the value of one of the 8 X server cut buffers.
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100 Optional arg WHICH-ONE should be a number from 0 to 7, defaulting to 0.
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101 Cut buffers are considered obsolete; you should use selections instead.
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102 This function does nothing if cut buffer support was not compiled in."
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103 (when (fboundp 'x-get-cutbuffer-internal)
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104 (x-get-cutbuffer-internal
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105 (aref [CUT_BUFFER0 CUT_BUFFER1 CUT_BUFFER2 CUT_BUFFER3
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106 CUT_BUFFER4 CUT_BUFFER5 CUT_BUFFER6 CUT_BUFFER7]
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107 (or which-one 0)))))
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108
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109 ;;; FSF name x-set-cut-buffer
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110 (defun x-store-cutbuffer (string &optional push)
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111 "Store STRING into the X server's primary cut buffer.
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112 If optional arg PUSH is non-nil, also rotate the cut buffers: this
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113 means the previous value of the primary cut buffer moves to the second
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114 cut buffer, and the second to the third, and so on (there are 8 buffers.)
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115 Cut buffers are considered obsolete; you should use selections instead.
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116 This function does nothing if cut buffer support was not compiled in."
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117 (when (fboundp 'x-store-cutbuffer-internal)
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118 (when push
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119 (x-rotate-cutbuffers-internal 1))
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120 (x-store-cutbuffer-internal 'CUT_BUFFER0 string)))
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121
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122
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123 ;FSFmacs (provide 'select)
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124
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125 ;;; x-select.el ends here.