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209
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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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272
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22 ;; along with XEmacs; see the file COPYING. If not, write to the
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209
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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 (defvar x-selected-text-type
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39 (if (featurep 'mule) '(COMPOUND_TEXT STRING) 'STRING)
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40 "The type atom used to obtain selections from the X server.
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41 Can be either a valid X selection data type, or a list of such types.
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42 COMPOUND_TEXT and STRING are the most commonly used data types.
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43 If a list is provided, the types are tried in sequence until
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44 there is a successful conversion.")
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45
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46 (defun x-get-selection (&optional type data-type)
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47 "Return the value of an X Windows selection.
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272
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48 The argument TYPE (default `PRIMARY') says which selection,
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49 and the argument DATA-TYPE (default `STRING', or `COMPOUND_TEXT' under Mule)
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50 says how to convert the data."
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51 (or type (setq type 'PRIMARY))
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52 (or data-type (setq data-type x-selected-text-type))
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53 (let ((text
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54 (if (consp data-type)
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55 (condition-case err
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56 (x-get-selection-internal type (car data-type))
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57 (selection-conversion-error
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58 (if (cdr data-type)
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59 (x-get-selection type (cdr data-type))
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60 (signal (car err) (cdr err)))))
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61 (x-get-selection-internal type data-type))))
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62 (when (and (consp text) (symbolp (car text)))
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63 (setq text (cdr text)))
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64 (when (not (stringp text))
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65 (error "Selection is not a string: %S" text))
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66 text))
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67
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68 (defun x-get-secondary-selection ()
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69 "Return text selected from some X window."
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70 (x-get-selection 'SECONDARY))
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71
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72 (defun x-get-clipboard ()
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73 "Return text pasted to the clipboard."
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74 (x-get-selection 'CLIPBOARD))
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75
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76 ;; FSFmacs calls this `x-set-selection', and reverses the
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77 ;; arguments (duh ...). This order is more logical.
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78 (defun x-own-selection (data &optional type)
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79 "Make an X Windows selection of type TYPE and value DATA.
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80 The argument TYPE (default `PRIMARY') says which selection,
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81 and DATA specifies the contents. DATA may be a string,
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82 a symbol, an integer (or a cons of two integers or list of two integers).
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83
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84 The selection may also be a cons of two markers pointing to the same buffer,
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272
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85 or an overlay. In these cases, the selection is considered to be the text
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86 between the markers *at whatever time the selection is examined*.
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87 Thus, editing done in the buffer after you specify the selection
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88 can alter the effective value of the selection.
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89
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90 The data may also be a vector of valid non-vector selection values.
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91
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92 Interactively, the text of the region is used as the selection value."
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93 (interactive (if (not current-prefix-arg)
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94 (list (read-string "Store text for pasting: "))
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95 (list (substring (region-beginning) (region-end)))))
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96 ;FSFmacs huh?? It says:
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97 ;; "This is for temporary compatibility with pre-release Emacs 19."
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98 ;(if (stringp type)
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99 ; (setq type (intern type)))
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100 (or (x-valid-simple-selection-p data)
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101 (and (vectorp data)
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102 (let ((valid t)
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103 (i (1- (length data))))
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104 (while (>= i 0)
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105 (or (x-valid-simple-selection-p (aref data i))
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106 (setq valid nil))
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107 (setq i (1- i)))
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108 valid))
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109 (signal 'error (list "invalid selection" data)))
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110 (or type (setq type 'PRIMARY))
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111 (if data
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112 (x-own-selection-internal type data)
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113 (x-disown-selection-internal type))
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114 (cond ((eq type 'PRIMARY)
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115 (setq primary-selection-extent
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280
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116 (select-make-extent-for-selection
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117 data primary-selection-extent)))
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118 ((eq type 'SECONDARY)
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119 (setq secondary-selection-extent
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280
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120 (select-make-extent-for-selection
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121 data secondary-selection-extent))))
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122 (setq zmacs-region-stays t)
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123 data)
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124
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125 (defun x-valid-simple-selection-p (data)
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280
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126 (valid-simple-selection-p data))
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209
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127
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128 (defun x-own-secondary-selection (selection &optional type)
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272
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129 "Make a secondary X Selection of the given argument. The argument may be a
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130 string or a cons of two markers (in which case the selection is considered to
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131 be the text between those markers)."
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132 (interactive (if (not current-prefix-arg)
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133 (list (read-string "Store text for pasting: "))
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134 (list (cons ;; these need not be ordered.
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135 (copy-marker (point-marker))
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136 (copy-marker (mark-marker))))))
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137 (x-own-selection selection 'SECONDARY))
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138
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139
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140 (defun x-own-clipboard (string)
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141 "Paste the given string to the X Clipboard."
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142 (x-own-selection string 'CLIPBOARD))
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143
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144
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145 (defun x-disown-selection (&optional secondary-p)
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146 "Assuming we own the selection, disown it. With an argument, discard the
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147 secondary selection instead of the primary selection."
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148 (x-disown-selection-internal (if secondary-p 'SECONDARY 'PRIMARY)))
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149
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150 (defun x-dehilight-selection (selection)
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151 "for use as a value of `x-lost-selection-hooks'."
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152 (cond ((eq selection 'PRIMARY)
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153 (if primary-selection-extent
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154 (let ((inhibit-quit t))
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155 (if (consp primary-selection-extent)
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156 (mapcar 'delete-extent primary-selection-extent)
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157 (delete-extent primary-selection-extent))
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158 (setq primary-selection-extent nil)))
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159 (if zmacs-regions (zmacs-deactivate-region)))
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160 ((eq selection 'SECONDARY)
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161 (if secondary-selection-extent
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162 (let ((inhibit-quit t))
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163 (if (consp secondary-selection-extent)
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164 (mapcar 'delete-extent secondary-selection-extent)
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165 (delete-extent secondary-selection-extent))
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166 (setq secondary-selection-extent nil)))))
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167 nil)
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168
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169 (setq x-lost-selection-hooks 'x-dehilight-selection)
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170
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171 (defun x-notice-selection-requests (selection type successful)
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172 "for possible use as the value of x-sent-selection-hooks."
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173 (if (not successful)
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174 (message "Selection request failed to convert %s to %s"
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175 selection type)
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176 (message "Sent selection %s as %s" selection type)))
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177
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178 (defun x-notice-selection-failures (selection type successful)
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179 "for possible use as the value of x-sent-selection-hooks."
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180 (or successful
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181 (message "Selection request failed to convert %s to %s"
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182 selection type)))
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183
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184 ;(setq x-sent-selection-hooks 'x-notice-selection-requests)
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185 ;(setq x-sent-selection-hooks 'x-notice-selection-failures)
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186
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187
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188 ;;; Selections in killed buffers
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272
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189 ;;; this function is called by kill-buffer as if it were on the
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209
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190 ;;; kill-buffer-hook (though it isn't really).
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191
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192 (defun xselect-kill-buffer-hook ()
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193 ;; Probably the right thing is to write a C function to return a list
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194 ;; of the selections which emacs owns, since it could conceivably own
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195 ;; a user-defined selection type that we've never heard of.
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196 (xselect-kill-buffer-hook-1 'PRIMARY)
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197 (xselect-kill-buffer-hook-1 'SECONDARY)
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198 (xselect-kill-buffer-hook-1 'CLIPBOARD))
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199
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200 (defun xselect-kill-buffer-hook-1 (selection)
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201 (let (value)
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202 (if (and (x-selection-owner-p selection)
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203 (setq value (x-get-selection-internal selection '_EMACS_INTERNAL))
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204 ;; The _EMACS_INTERNAL selection type has a converter registered
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205 ;; for it that does no translation. This only works if emacs is
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206 ;; requesting the selection from itself. We could have done this
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207 ;; by writing a C function to return the raw selection data, and
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208 ;; that might be the right way to do this, but this was easy.
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209 (or (and (consp value)
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210 (markerp (car value))
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211 (eq (current-buffer) (marker-buffer (car value))))
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212 (and (extent-live-p value)
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213 (eq (current-buffer) (extent-object value)))
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214 (and (extentp value) (not (extent-live-p value)))))
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215 (x-disown-selection-internal selection))))
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216
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217
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218 ;;; Cut Buffer support
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219
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220 ;;; FSF name x-get-cut-buffer
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221 (defun x-get-cutbuffer (&optional which-one)
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272
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222 "Return the value of one of the 8 X server cut buffers.
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223 Optional arg WHICH-ONE should be a number from 0 to 7, defaulting to 0.
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224 Cut buffers are considered obsolete; you should use selections instead.
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225 This function does nothing if support for cut buffers was not compiled
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226 into Emacs."
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227 (and (fboundp 'x-get-cutbuffer-internal)
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228 (x-get-cutbuffer-internal
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229 (if which-one
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230 (aref [CUT_BUFFER0 CUT_BUFFER1 CUT_BUFFER2 CUT_BUFFER3
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231 CUT_BUFFER4 CUT_BUFFER5 CUT_BUFFER6 CUT_BUFFER7]
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232 which-one)
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233 'CUT_BUFFER0))))
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234
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235 ;;; FSF name x-set-cut-buffer
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236 (defun x-store-cutbuffer (string &optional push)
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237 "Store STRING into the X server's primary cut buffer.
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238 If PUSH is non-nil, also rotate the cut buffers:
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239 this means the previous value of the primary cut buffer moves the second
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240 cut buffer, and the second to the third, and so on (there are 8 buffers.)
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241 Cut buffers are considered obsolete; you should use selections instead.
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242 This function does nothing if support for cut buffers was not compiled
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243 into Emacs."
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244 (and (fboundp 'x-store-cutbuffer-internal)
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245 (progn
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246 ;; Check the data type of STRING.
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247 (substring string 0 0)
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248 (if push
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249 (x-rotate-cutbuffers-internal 1))
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250 (x-store-cutbuffer-internal 'CUT_BUFFER0 string))))
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251
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252
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253 ;;; Random utility functions
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254
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255 (defun x-cut-copy-clear-internal (mode)
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256 (or (memq mode '(cut copy clear)) (error "unkown mode %S" mode))
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257 (or (x-selection-owner-p)
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258 (error "emacs does not own the primary selection"))
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259 (setq last-command nil)
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260 (or primary-selection-extent
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261 (error "the primary selection is not an extent?"))
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262 (save-excursion
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263 (let (rect-p b s e)
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264 (cond
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265 ((consp primary-selection-extent)
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266 (setq rect-p t
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267 b (extent-object (car primary-selection-extent))
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268 s (extent-start-position (car primary-selection-extent))
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269 e (extent-end-position (car (reverse primary-selection-extent)))))
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270 (t
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271 (setq rect-p nil
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272 b (extent-object primary-selection-extent)
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273 s (extent-start-position primary-selection-extent)
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274 e (extent-end-position primary-selection-extent))))
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275 (set-buffer b)
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276 (cond ((memq mode '(cut copy))
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277 (if rect-p
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278 (progn
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279 ;; why is killed-rectangle free? Is it used somewhere?
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280 ;; should it be defvarred?
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281 (setq killed-rectangle (extract-rectangle s e))
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282 (kill-new (mapconcat 'identity killed-rectangle "\n")))
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283 (copy-region-as-kill s e))
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284 ;; Maybe killing doesn't own clipboard. Make sure it happens.
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285 ;; This memq is kind of grody, because they might have done it
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286 ;; some other way, but owning the clipboard twice in that case
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287 ;; wouldn't actually hurt anything.
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288 (or (and (consp kill-hooks) (memq 'x-own-clipboard kill-hooks))
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289 (x-own-clipboard (car kill-ring)))))
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290 (cond ((memq mode '(cut clear))
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291 (if rect-p
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292 (delete-rectangle s e)
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293 (delete-region s e))))
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294 (x-disown-selection nil)
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295 )))
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296
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297 (defun x-copy-primary-selection ()
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298 "Copy the selection to the Clipboard and the kill ring."
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299 (interactive)
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300 (x-cut-copy-clear-internal 'copy))
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301
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302 (defun x-kill-primary-selection ()
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303 "Copy the selection to the Clipboard and the kill ring, then delete it."
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304 (interactive "*")
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305 (x-cut-copy-clear-internal 'cut))
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306
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307 (defun x-delete-primary-selection ()
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308 "Delete the selection without copying it to the Clipboard or the kill ring."
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309 (interactive "*")
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310 (x-cut-copy-clear-internal 'clear))
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311
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312 (defun x-yank-clipboard-selection ()
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313 "Insert the current Clipboard selection at point."
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314 (interactive "*")
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315 (setq last-command nil)
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316 (setq this-command 'yank) ; so that yank-pop works.
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317 (let ((clip (x-get-clipboard)))
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318 (or clip (error "there is no clipboard selection"))
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319 (push-mark)
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320 (insert clip)))
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321
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322 ;;; Functions to convert the selection into various other selection types.
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323 ;;; Every selection type that emacs handles is implemented this way, except
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324 ;;; for TIMESTAMP, which is a special case.
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325
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326 (defun xselect-convert-to-text (selection type value)
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327 (cond ((stringp value)
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328 value)
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329 ((extentp value)
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330 (save-excursion
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331 (set-buffer (extent-object value))
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332 (save-restriction
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333 (widen)
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334 (buffer-substring (extent-start-position value)
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335 (extent-end-position value)))))
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336 ((and (consp value)
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337 (markerp (car value))
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338 (markerp (cdr value)))
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339 (or (eq (marker-buffer (car value)) (marker-buffer (cdr value)))
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340 (signal 'error
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341 (list "markers must be in the same buffer"
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342 (car value) (cdr value))))
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343 (save-excursion
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344 (set-buffer (or (marker-buffer (car value))
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345 (error "selection is in a killed buffer")))
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346 (save-restriction
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347 (widen)
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348 (buffer-substring (car value) (cdr value)))))
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349 (t nil)))
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350
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351 (defun xselect-convert-to-string (selection type value)
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352 (let ((outval (xselect-convert-to-text selection type value)))
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353 ;; force the string to be not in Compound Text format.
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354 (if (stringp outval)
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355 (cons 'STRING outval)
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356 outval)))
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357
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358 (defun xselect-convert-to-compound-text (selection type value)
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359 ;; converts to compound text automatically
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360 (xselect-convert-to-text selection type value))
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361
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362 (defun xselect-convert-to-length (selection type value)
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363 (let ((value
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364 (cond ((stringp value)
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365 (length value))
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366 ((extentp value)
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367 (extent-length value))
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368 ((and (consp value)
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369 (markerp (car value))
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370 (markerp (cdr value)))
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371 (or (eq (marker-buffer (car value))
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372 (marker-buffer (cdr value)))
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373 (signal 'error
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374 (list "markers must be in the same buffer"
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375 (car value) (cdr value))))
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376 (abs (- (car value) (cdr value)))))))
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377 (if value ; force it to be in 32-bit format.
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378 (cons (ash value -16) (logand value 65535))
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379 nil)))
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380
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381 (defun xselect-convert-to-targets (selection type value)
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382 ;; return a vector of atoms, but remove duplicates first.
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383 (let* ((all (cons 'TIMESTAMP (mapcar 'car selection-converter-alist)))
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384 (rest all))
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385 (while rest
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386 (cond ((memq (car rest) (cdr rest))
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387 (setcdr rest (delq (car rest) (cdr rest))))
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388 ((eq (car (cdr rest)) '_EMACS_INTERNAL) ; shh, it's a secret
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389 (setcdr rest (cdr (cdr rest))))
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390 (t
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391 (setq rest (cdr rest)))))
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392 (apply 'vector all)))
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393
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394 (defun xselect-convert-to-delete (selection type value)
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395 (x-disown-selection-internal selection)
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396 ;; A return value of nil means that we do not know how to do this conversion,
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397 ;; and replies with an "error". A return value of NULL means that we have
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398 ;; done the conversion (and any side-effects) but have no value to return.
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399 'NULL)
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400
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401 (defun xselect-convert-to-filename (selection type value)
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402 (cond ((extentp value)
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403 (buffer-file-name (or (extent-object value)
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404 (error "selection is in a killed buffer"))))
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405 ((and (consp value)
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406 (markerp (car value))
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407 (markerp (cdr value)))
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408 (buffer-file-name (or (marker-buffer (car value))
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409 (error "selection is in a killed buffer"))))
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410 (t nil)))
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411
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412 (defun xselect-convert-to-charpos (selection type value)
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413 (let (a b tmp)
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414 (cond ((cond ((extentp value)
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415 (setq a (extent-start-position value)
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416 b (extent-end-position value)))
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417 ((and (consp value)
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418 (markerp (car value))
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419 (markerp (cdr value)))
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420 (setq a (car value)
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421 b (cdr value))))
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422 (setq a (1- a) b (1- b)) ; zero-based
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423 (if (< b a) (setq tmp a a b b tmp))
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424 (cons 'SPAN
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425 (vector (cons (ash a -16) (logand a 65535))
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426 (cons (ash b -16) (logand b 65535))))))))
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427
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428 (defun xselect-convert-to-lineno (selection type value)
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429 (let (a b buf tmp)
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430 (cond ((cond ((extentp value)
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431 (setq buf (extent-object value)
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432 a (extent-start-position value)
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433 b (extent-end-position value)))
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434 ((and (consp value)
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435 (markerp (car value))
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436 (markerp (cdr value)))
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437 (setq a (marker-position (car value))
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438 b (marker-position (cdr value))
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439 buf (marker-buffer (car value)))))
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440 (save-excursion
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441 (set-buffer buf)
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442 (save-restriction
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443 (widen)
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444 (goto-char a)
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445 (beginning-of-line)
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446 (setq a (1+ (count-lines 1 (point))))
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447 (goto-char b)
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448 (beginning-of-line)
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449 (setq b (1+ (count-lines 1 (point))))))
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450 (if (< b a) (setq tmp a a b b tmp))
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451 (cons 'SPAN
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452 (vector (cons (ash a -16) (logand a 65535))
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453 (cons (ash b -16) (logand b 65535))))))))
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454
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455 (defun xselect-convert-to-colno (selection type value)
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456 (let (a b buf tmp)
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457 (cond ((cond ((extentp value)
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458 (setq buf (extent-object value)
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459 a (extent-start-position value)
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460 b (extent-end-position value)))
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461 ((and (consp value)
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462 (markerp (car value))
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463 (markerp (cdr value)))
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464 (setq a (car value)
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465 b (cdr value)
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466 buf (marker-buffer a))))
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467 (save-excursion
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468 (set-buffer buf)
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469 (goto-char a)
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470 (setq a (current-column))
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471 (goto-char b)
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472 (setq b (current-column)))
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473 (if (< b a) (setq tmp a a b b tmp))
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474 (cons 'SPAN
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475 (vector (cons (ash a -16) (logand a 65535))
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476 (cons (ash b -16) (logand b 65535))))))))
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477
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478 (defun xselect-convert-to-sourceloc (selection type value)
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479 (let (a b buf file-name tmp)
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480 (cond ((cond ((extentp value)
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|
481 (setq buf (or (extent-object value)
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482 (error "selection is in a killed buffer"))
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483 a (extent-start-position value)
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484 b (extent-end-position value)
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485 file-name (buffer-file-name buf)))
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486 ((and (consp value)
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487 (markerp (car value))
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|
|
488 (markerp (cdr value)))
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|
489 (setq a (marker-position (car value))
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|
490 b (marker-position (cdr value))
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|
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491 buf (or (marker-buffer (car value))
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492 (error "selection is in a killed buffer"))
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|
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493 file-name (buffer-file-name buf))))
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|
|
494 (save-excursion
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|
|
495 (set-buffer buf)
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|
|
496 (save-restriction
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|
|
497 (widen)
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|
|
498 (goto-char a)
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499 (beginning-of-line)
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|
|
500 (setq a (1+ (count-lines 1 (point))))
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|
|
501 (goto-char b)
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|
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502 (beginning-of-line)
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|
|
503 (setq b (1+ (count-lines 1 (point))))))
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|
|
504 (if (< b a) (setq tmp a a b b tmp))
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|
505 (format "%s:%d" file-name a)))))
|
|
|
506
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|
|
507 (defun xselect-convert-to-os (selection type size)
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|
|
508 (symbol-name system-type))
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|
|
509
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|
|
510 (defun xselect-convert-to-host (selection type size)
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|
|
511 (system-name))
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|
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512
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|
|
513 (defun xselect-convert-to-user (selection type size)
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|
|
514 (user-full-name))
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515
|
|
|
516 (defun xselect-convert-to-class (selection type size)
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|
|
517 x-emacs-application-class)
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|
|
518
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|
|
519 ;; We do not try to determine the name Emacs was invoked with,
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|
|
520 ;; because it is not clean for a program's behavior to depend on that.
|
|
|
521 (defun xselect-convert-to-name (selection type size)
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|
|
522 ;invocation-name
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|
|
523 "xemacs")
|
|
|
524
|
|
|
525 (defun xselect-convert-to-integer (selection type value)
|
|
|
526 (and (integerp value)
|
|
|
527 (cons (ash value -16) (logand value 65535))))
|
|
|
528
|
|
|
529 (defun xselect-convert-to-atom (selection type value)
|
|
|
530 (and (symbolp value) value))
|
|
|
531
|
|
|
532 (defun xselect-convert-to-identity (selection type value) ; used internally
|
|
|
533 (vector value))
|
|
|
534
|
|
|
535 (setq selection-converter-alist
|
|
|
536 '((TEXT . xselect-convert-to-text)
|
|
|
537 (STRING . xselect-convert-to-string)
|
|
|
538 (COMPOUND_TEXT . xselect-convert-to-compound-text)
|
|
|
539 (TARGETS . xselect-convert-to-targets)
|
|
|
540 (LENGTH . xselect-convert-to-length)
|
|
|
541 (DELETE . xselect-convert-to-delete)
|
|
|
542 (FILE_NAME . xselect-convert-to-filename)
|
|
|
543 (CHARACTER_POSITION . xselect-convert-to-charpos)
|
|
|
544 (SOURCE_LOC . xselect-convert-to-sourceloc)
|
|
|
545 (LINE_NUMBER . xselect-convert-to-lineno)
|
|
|
546 (COLUMN_NUMBER . xselect-convert-to-colno)
|
|
|
547 (OWNER_OS . xselect-convert-to-os)
|
|
|
548 (HOST_NAME . xselect-convert-to-host)
|
|
|
549 (USER . xselect-convert-to-user)
|
|
|
550 (CLASS . xselect-convert-to-class)
|
|
|
551 (NAME . xselect-convert-to-name)
|
|
|
552 (ATOM . xselect-convert-to-atom)
|
|
|
553 (INTEGER . xselect-convert-to-integer)
|
|
|
554 (_EMACS_INTERNAL . xselect-convert-to-identity)
|
|
|
555 ))
|
|
|
556
|
|
|
557 ;FSFmacs (provide 'select)
|
|
|
558
|
|
|
559 ;;; x-select.el ends here.
|
