diff lisp/x-select.el @ 428:3ecd8885ac67 r21-2-22

Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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children abe6d1db359e
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/x-select.el	Mon Aug 13 11:28:15 2007 +0200
@@ -0,0 +1,158 @@
+;;; x-select.el --- Lisp interface to X Selections.
+
+;; Copyright (C) 1990, 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1995 Sun Microsystems.
+
+;; Maintainer: XEmacs Development Team
+;; Keywords: extensions, dumped
+
+;; This file is part of XEmacs.
+
+;; XEmacs is free software; you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; XEmacs is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with XEmacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Synched up with: FSF 19.30 (select.el).
+
+;;; Commentary:
+
+;; This file is dumped with XEmacs (when X support is compiled in).
+
+;; The selection code requires us to use certain symbols whose names are
+;; all upper-case; this may seem tasteless, but it makes there be a 1:1
+;; correspondence between these symbols and X Atoms (which are upcased).
+
+;;; Code:
+
+(define-obsolete-function-alias 'x-selection-exists-p 'selection-exists-p)
+(define-obsolete-function-alias 'x-selection-owner-p 'selection-owner-p)
+(define-obsolete-variable-alias 'x-selection-converter-alist 'selection-converter-alist)
+(define-obsolete-variable-alias 'x-lost-selection-hooks 'lost-selection-hooks)
+(define-obsolete-variable-alias 'x-selected-text-type 'selected-text-type)
+(define-obsolete-function-alias 'x-valid-simple-selection-p 'valid-simple-selection-p)
+(define-obsolete-function-alias 'x-own-selection 'own-selection)
+(define-obsolete-function-alias 'x-disown-selection 'disown-selection)
+(define-obsolete-function-alias 'x-delete-primary-selection 'delete-primary-selection)
+(define-obsolete-function-alias 'x-copy-primary-selection 'copy-primary-selection)
+(define-obsolete-function-alias 'x-kill-primary-selection 'kill-primary-selection)
+(define-obsolete-function-alias 'x-select-make-extent-for-selection
+  'select-make-extent-for-selection)
+(define-obsolete-function-alias 'x-cut-copy-clear-internal 'cut-copy-clear-internal)
+(define-obsolete-function-alias 'x-get-selection 'get-selection)
+(define-obsolete-function-alias 'x-get-clipboard 'get-clipboard)
+(define-obsolete-function-alias 'x-yank-clipboard-selection 
+  'yank-clipboard-selection)
+(define-obsolete-function-alias 'x-disown-selection-internal
+  'disown-selection-internal)
+
+(defun x-get-secondary-selection ()
+  "Return text selected from some X window."
+  (get-selection 'SECONDARY))
+
+(defun x-own-secondary-selection (selection &optional type)
+  "Make a secondary X Selection of the given argument.  The argument may be a
+string or a cons of two markers (in which case the selection is considered to
+be the text between those markers)."
+  (interactive (if (not current-prefix-arg)
+		   (list (read-string "Store text for pasting: "))
+		 (list (cons ;; these need not be ordered.
+			(copy-marker (point-marker))
+			(copy-marker (mark-marker))))))
+  (own-selection selection 'SECONDARY))
+
+(defun x-notice-selection-requests (selection type successful)
+  "for possible use as the value of x-sent-selection-hooks."
+  (if (not successful)
+      (message "Selection request failed to convert %s to %s"
+	       selection type)
+    (message "Sent selection %s as %s" selection type)))
+
+(defun x-notice-selection-failures (selection type successful)
+  "for possible use as the value of x-sent-selection-hooks."
+  (or successful
+      (message "Selection request failed to convert %s to %s"
+	       selection type)))
+
+;(setq x-sent-selection-hooks 'x-notice-selection-requests)
+;(setq x-sent-selection-hooks 'x-notice-selection-failures)
+
+
+;;; Selections in killed buffers
+;;; this function is called by kill-buffer as if it were on the
+;;; kill-buffer-hook (though it isn't really).
+
+(defun xselect-kill-buffer-hook ()
+  ;; Probably the right thing is to write a C function to return a list
+  ;; of the selections which emacs owns, since it could conceivably own
+  ;; a user-defined selection type that we've never heard of.
+  (xselect-kill-buffer-hook-1 'PRIMARY)
+  (xselect-kill-buffer-hook-1 'SECONDARY)
+  (xselect-kill-buffer-hook-1 'CLIPBOARD))
+
+(defun xselect-kill-buffer-hook-1 (selection)
+  (let (value)
+    (if (and (selection-owner-p selection)
+	     (setq value (get-selection-internal selection '_EMACS_INTERNAL))
+	     ;; The _EMACS_INTERNAL selection type has a converter registered
+	     ;; for it that does no translation.  This only works if emacs is
+	     ;; requesting the selection from itself.  We could have done this
+	     ;; by writing a C function to return the raw selection data, and
+	     ;; that might be the right way to do this, but this was easy.
+	     (or (and (consp value)
+		      (markerp (car value))
+		      (eq (current-buffer) (marker-buffer (car value))))
+		 (and (extent-live-p value)
+		      (eq (current-buffer) (extent-object value)))
+                 (and (extentp value) (not (extent-live-p value)))))
+	(disown-selection-internal selection))))
+
+
+;;; Cut Buffer support
+
+;;; FSF name x-get-cut-buffer
+(defun x-get-cutbuffer (&optional which-one)
+  "Return the value of one of the 8 X server cut buffers.
+Optional arg WHICH-ONE should be a number from 0 to 7, defaulting to 0.
+Cut buffers are considered obsolete; you should use selections instead.
+This function does nothing if support for cut buffers was not compiled
+into Emacs."
+  (and (fboundp 'x-get-cutbuffer-internal)
+       (x-get-cutbuffer-internal
+	(if which-one
+	    (aref [CUT_BUFFER0 CUT_BUFFER1 CUT_BUFFER2 CUT_BUFFER3
+			       CUT_BUFFER4 CUT_BUFFER5 CUT_BUFFER6 CUT_BUFFER7]
+		  which-one)
+	  'CUT_BUFFER0))))
+
+;;; FSF name x-set-cut-buffer
+(defun x-store-cutbuffer (string &optional push)
+  "Store STRING into the X server's primary cut buffer.
+If PUSH is non-nil, also rotate the cut buffers:
+this means the previous value of the primary cut buffer moves the second
+cut buffer, and the second to the third, and so on (there are 8 buffers.)
+Cut buffers are considered obsolete; you should use selections instead.
+This function does nothing if support for cut buffers was not compiled
+into Emacs."
+  (and (fboundp 'x-store-cutbuffer-internal)
+       (progn
+	 ;; Check the data type of STRING.
+	 (substring string 0 0)
+	 (if push
+	     (x-rotate-cutbuffers-internal 1))
+	 (x-store-cutbuffer-internal 'CUT_BUFFER0 string))))
+
+
+;FSFmacs (provide 'select)
+
+;;; x-select.el ends here.