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1 ;;; msw-select.el --- Lisp interface to mswindows 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: Not in FSF
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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 mswindows support is compiled in).
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31 ;; #### Only copes with copying/pasting text
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32
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33 ;;; Code:
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34
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35 (defun mswindows-paste-clipboard ()
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36 "Insert the current contents of the mswindows clipboard at point,
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37 replacing the active selection if there is one."
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38 (interactive "*")
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39 (setq last-command nil)
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40 (setq this-command 'yank) ; so that yank-pop works.
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41 (let ((clip (mswindows-get-clipboard)) (s (mark-marker)) (e (point-marker)))
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42 (or clip (error "there is no text on the clipboard"))
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43 (if s
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44 (if mouse-track-rectangle-p
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45 (delete-rectangle s e)
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46 (delete-region s e)))
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47 (push-mark)
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48 (if mouse-track-rectangle-p
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49 (insert-rectangle clip)
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50 (insert clip))))
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51
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52 (defun mswindows-copy-clipboard ()
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53 "Copy the selection to the mswindows clipboard and to the kill ring."
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54 (interactive)
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55 (mswindows-cut-copy-clipboard 'copy))
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56
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57 (defun mswindows-cut-clipboard ()
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58 "Copy the selection to the mswindows clipboard and to the kill ring,
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59 then delete it."
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60 (interactive "*")
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61 (mswindows-cut-copy-clipboard 'cut))
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62
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63 (defun mswindows-cut-copy-clipboard (mode)
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64 "Don't use this function.
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65 Use mswindows-cut-clipboard or mswindows-copy-clipboard instead."
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66 (or (memq mode '(cut copy)) (error "unkown mode %S" mode))
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67 (setq last-command nil)
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68 (let ((s (mark-marker)) (e (point-marker)))
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69 (if s
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70 (progn
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71 (if mouse-track-rectangle-p
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72 (progn
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73 (setq killed-rectangle (extract-rectangle s e))
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74 (kill-new (mapconcat 'identity killed-rectangle "\n")))
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75 (copy-region-as-kill s e))
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76 (mswindows-set-clipboard (car kill-ring))
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77 (if (eq mode 'cut)
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78 (if mouse-track-rectangle-p
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79 (delete-rectangle s e)
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80 (delete-region s e))
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81 ;; mswindows apps normally leave the selection active but that feels weird here
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82 ;; (setq zmacs-region-stays t)
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83 ))
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84 (error "there is no selection to cut or copy"))))
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280
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85
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86 (defvar mswindows-selection-owned-p nil
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87 "Whether we have a selection or not.
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88 MS-Windows has no concept of ownership; don't use this.")
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89
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90 (defun mswindows-own-selection (data &optional type)
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91 "Make an MS Windows selection of type TYPE and value DATA.
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92 The argument TYPE is ignored, and DATA specifies the contents.
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93 DATA may be a string,
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94 a symbol, an integer (or a cons of two integers or list of two integers).
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95
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96 The selection may also be a cons of two markers pointing to the same buffer,
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97 or an overlay. In these cases, the selection is considered to be the text
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98 between the markers *at whatever time the selection is examined*.
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99 Thus, editing done in the buffer after you specify the selection
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100 can alter the effective value of the selection.
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101
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102 The data may also be a vector of valid non-vector selection values.
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103
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104 Interactively, the text of the region is used as the selection value."
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105 (interactive (if (not current-prefix-arg)
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106 (list (read-string "Store text for pasting: "))
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107 (list (substring (region-beginning) (region-end)))))
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108 (or (valid-simple-selection-p data)
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109 (and (vectorp data)
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110 (let ((valid t)
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111 (i (1- (length data))))
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112 (while (>= i 0)
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113 (or (valid-simple-selection-p (aref data i))
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114 (setq valid nil))
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115 (setq i (1- i)))
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116 valid))
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117 (signal 'error (list "invalid selection" data)))
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118 (if data
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119 (setq mswindows-selection-owned-p data)
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120 (setq mswindows-selection-owned-p nil))
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121 (setq primary-selection-extent
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122 (select-make-extent-for-selection
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123 data primary-selection-extent))
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124 (setq zmacs-region-stays t)
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125 data)
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126
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127 (defun mswindows-disown-selection (&optional secondary-p)
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128 "Assuming we own the selection, disown it. With an argument, discard the
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129 secondary selection instead of the primary selection."
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130 (setq mswindows-selection-owned-p nil))
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131
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132 (defun mswindows-selection-owner-p (&optional selection)
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133 "Return t if current emacs process owns the given Selection.
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134 The arg is ignored."
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135 (not (eq mswindows-selection-owned-p nil)))
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136
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