--- /dev/null
+;;; lselect.el --- Lucid interface to X Selections
+
+;; Keywords: emulations
+
+;; This won't completely work until we support or emulate Lucid-style extents.
+;; Copyright (C) 1990, 1993 Free Software Foundation, Inc.
+;; Based on Lucid's selection code.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+;;; Code:
+
+;;; 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.)
+
+(fset 'x-get-cutbuffer 'x-get-cut-buffer)
+(fset 'x-store-cutbuffer 'x-set-cut-buffer)
+
+(or (find-face 'primary-selection)
+ (make-face 'primary-selection))
+
+(or (find-face 'secondary-selection)
+ (make-face 'secondary-selection))
+
+(defun x-get-secondary-selection ()
+ "Return text selected from some X window."
+ (x-get-selection-internal 'SECONDARY 'STRING))
+
+(defvar primary-selection-extent nil
+ "The extent of the primary selection; don't use this.")
+
+(defvar secondary-selection-extent nil
+ "The extent of the secondary selection; don't use this.")
+
+
+(defun x-select-make-extent-for-selection (selection previous-extent face)
+ ;; Given a selection, this makes an extent in the buffer which holds that
+ ;; selection, for highlighting purposes. If the selection isn't associated
+ ;; with a buffer, this does nothing.
+ (let ((buffer nil)
+ (valid (and (extentp previous-extent)
+ (extent-buffer previous-extent)
+ (buffer-name (extent-buffer previous-extent))))
+ start end)
+ (cond ((stringp selection)
+ ;; if we're selecting a string, lose the previous extent used
+ ;; to highlight the selection.
+ (setq valid nil))
+ ((consp selection)
+ (setq start (min (car selection) (cdr selection))
+ end (max (car selection) (cdr selection))
+ valid (and valid
+ (eq (marker-buffer (car selection))
+ (extent-buffer previous-extent)))
+ buffer (marker-buffer (car selection))))
+ ((extentp selection)
+ (setq start (extent-start-position selection)
+ end (extent-end-position selection)
+ valid (and valid
+ (eq (extent-buffer selection)
+ (extent-buffer previous-extent)))
+ buffer (extent-buffer selection)))
+ )
+ (if (and (not valid)
+ (extentp previous-extent)
+ (extent-buffer previous-extent)
+ (buffer-name (extent-buffer previous-extent)))
+ (delete-extent previous-extent))
+ (if (not buffer)
+ ;; string case
+ nil
+ ;; normal case
+ (if valid
+ (set-extent-endpoints previous-extent start end)
+ (setq previous-extent (make-extent start end buffer))
+ ;; use same priority as mouse-highlighting so that conflicts between
+ ;; the selection extent and a mouse-highlighted extent are resolved
+ ;; by the usual size-and-endpoint-comparison method.
+ (set-extent-priority previous-extent mouse-highlight-priority)
+ (set-extent-face previous-extent face)))))
+
+
+(defun x-own-selection (selection &optional type)
+ "Make a primary X Selection of the given argument.
+The argument may be a string, a cons of two markers, or an extent.
+In the latter cases the selection is considered to be the text
+between the markers, or the between extents endpoints."
+ (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))))))
+ (or type (setq type 'PRIMARY))
+ (x-set-selection selection type)
+ (cond ((eq type 'PRIMARY)
+ (setq primary-selection-extent
+ (x-select-make-extent-for-selection
+ selection primary-selection-extent 'primary-selection)))
+ ((eq type 'SECONDARY)
+ (setq secondary-selection-extent
+ (x-select-make-extent-for-selection
+ selection secondary-selection-extent 'secondary-selection))))
+ selection)
+
+
+(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))))))
+ (x-own-selection selection 'SECONDARY))
+
+
+(defun x-own-clipboard (string)
+ "Paste the given string to the X Clipboard."
+ (x-own-selection string 'CLIPBOARD))
+
+
+(defun x-disown-selection (&optional secondary-p)
+ "Assuming we own the selection, disown it. With an argument, discard the
+secondary selection instead of the primary selection."
+ (x-disown-selection-internal (if secondary-p 'SECONDARY 'PRIMARY)))
+
+(defun x-dehilight-selection (selection)
+ "for use as a value of x-lost-selection-hooks."
+ (cond ((eq selection 'PRIMARY)
+ (if primary-selection-extent
+ (let ((inhibit-quit t))
+ (delete-extent primary-selection-extent)
+ (setq primary-selection-extent nil)))
+ (if zmacs-regions (zmacs-deactivate-region)))
+ ((eq selection 'SECONDARY)
+ (if secondary-selection-extent
+ (let ((inhibit-quit t))
+ (delete-extent secondary-selection-extent)
+ (setq secondary-selection-extent nil)))))
+ nil)
+
+(setq x-lost-selection-hooks 'x-dehilight-selection)
+
+(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)
+
+\f
+;;; Random utility functions
+
+(defun x-kill-primary-selection ()
+ "If there is a selection, delete the text it covers, and copy it to
+both the kill ring and the Clipboard."
+ (interactive)
+ (or (x-selection-owner-p) (error "emacs does not own the primary selection"))
+ (setq last-command nil)
+ (or primary-selection-extent
+ (error "the primary selection is not an extent?"))
+ (save-excursion
+ (set-buffer (extent-buffer primary-selection-extent))
+ (kill-region (extent-start-position primary-selection-extent)
+ (extent-end-position primary-selection-extent)))
+ (x-disown-selection nil))
+
+(defun x-delete-primary-selection ()
+ "If there is a selection, delete the text it covers *without* copying it to
+the kill ring or the Clipboard."
+ (interactive)
+ (or (x-selection-owner-p) (error "emacs does not own the primary selection"))
+ (setq last-command nil)
+ (or primary-selection-extent
+ (error "the primary selection is not an extent?"))
+ (save-excursion
+ (set-buffer (extent-buffer primary-selection-extent))
+ (delete-region (extent-start-position primary-selection-extent)
+ (extent-end-position primary-selection-extent)))
+ (x-disown-selection nil))
+
+(defun x-copy-primary-selection ()
+ "If there is a selection, copy it to both the kill ring and the Clipboard."
+ (interactive)
+ (setq last-command nil)
+ (or (x-selection-owner-p) (error "emacs does not own the primary selection"))
+ (or primary-selection-extent
+ (error "the primary selection is not an extent?"))
+ (save-excursion
+ (set-buffer (extent-buffer primary-selection-extent))
+ (copy-region-as-kill (extent-start-position primary-selection-extent)
+ (extent-end-position primary-selection-extent))))
+
+(defun x-yank-clipboard-selection ()
+ "If someone owns a Clipboard selection, insert it at point."
+ (interactive)
+ (setq last-command nil)
+ (let ((clip (x-get-clipboard)))
+ (or clip (error "there is no clipboard selection"))
+ (push-mark)
+ (insert clip)))
+
+;;; lselect.el ends here.
--- /dev/null
+;;; select.el --- lisp portion of standard selection support.
+
+;; Keywords: internal
+
+;; Copyright (c) 1993 Free Software Foundation, Inc.
+;; Based partially on earlier release by Lucid.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+;;; Code:
+
+;; This is for temporary compatibility with pre-release Emacs 19.
+(fset 'x-selection 'x-get-selection)
+(defun x-get-selection (&optional type data-type)
+ "Return the value of an X Windows selection.
+The argument TYPE (default `PRIMARY') says which selection,
+and the argument DATA-TYPE (default `STRING') says how to convert the data."
+ (x-get-selection-internal (or type 'PRIMARY) (or data-type 'STRING)))
+
+(defun x-get-clipboard ()
+ "Return text pasted to the clipboard."
+ (x-get-selection-internal 'CLIPBOARD 'STRING))
+
+(defun x-set-selection (type data)
+ "Make an X Windows selection of type TYPE and value DATA.
+The argument TYPE (default `PRIMARY') says which selection,
+and DATA specifies the contents. DATA may be a string,
+a symbol, an integer (or a cons of two integers or list of two integers),
+or a cons of two markers pointing to the same buffer.
+In the last case, the selection is considered to be the text
+between the markers.
+The data may also be a vector of valid non-vector selection values."
+ (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))))))
+ ;; This is for temporary compatibility with pre-release Emacs 19.
+ (if (stringp type)
+ (setq type (intern type)))
+ (or (x-valid-simple-selection-p data)
+ (and (vectorp data)
+ (let ((valid t)
+ (i (1- (length data))))
+ (while (>= i 0)
+ (or (x-valid-simple-selection-p (aref data i))
+ (setq valid nil))
+ (setq i (1- i)))
+ valid))
+ (signal 'error (list "invalid selection" data)))
+ (or type (setq type 'PRIMARY))
+ (if data
+ (x-own-selection-internal type data)
+ (x-disown-selection-internal type))
+ data)
+
+(defun x-valid-simple-selection-p (data)
+ (or (stringp data)
+ (symbolp data)
+ (integerp data)
+ (and (consp data)
+ (integerp (car data))
+ (or (integerp (cdr data))
+ (and (consp (cdr data))
+ (integerp (car (cdr data))))))
+;;; (and (fboundp 'extentp)
+;;; (extentp data))
+ (and (consp data)
+ (markerp (car data))
+ (markerp (cdr data))
+ (marker-buffer (car data))
+ (marker-buffer (cdr data))
+ (eq (marker-buffer (car data))
+ (marker-buffer (cdr data)))
+ (buffer-name (marker-buffer (car data)))
+ (buffer-name (marker-buffer (cdr data))))))
+\f
+;;; Cut Buffer support
+
+(defun x-get-cut-buffer (&optional which-one)
+ "Returns 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."
+ (x-get-cut-buffer-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)))
+
+(defun x-set-cut-buffer (string)
+ "Store STRING into the X server's primary cut buffer.
+The previous value of the primary cut buffer is rotated to the secondary
+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."
+ ;; Check the data type of STRING.
+ (substring string 0 0)
+ (x-rotate-cut-buffers-internal 1)
+ (x-store-cut-buffer-internal 'CUT_BUFFER0 string))
+
+\f
+;;; Functions to convert the selection into various other selection types.
+;;; Every selection type that Emacs handles is implemented this way, except
+;;; for TIMESTAMP, which is a special case.
+
+(defun xselect-convert-to-string (selection type value)
+ (cond ((stringp value)
+ value)
+;;; ((extentp value)
+;;; (save-excursion
+;;; (set-buffer (extent-buffer value))
+;;; (buffer-substring (extent-start-position value)
+;;; (extent-end-position value))))
+ ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (or (eq (marker-buffer (car value)) (marker-buffer (cdr value)))
+ (signal 'error
+ (list "markers must be in the same buffer"
+ (car value) (cdr value))))
+ (save-excursion
+ (set-buffer (or (marker-buffer (car value))
+ (error "selection is in a killed buffer")))
+ (buffer-substring (car value) (cdr value))))
+ (t nil)))
+
+(defun xselect-convert-to-length (selection type value)
+ (let ((value
+ (cond ((stringp value)
+ (length value))
+;;; ((extentp value)
+;;; (extent-length value))
+ ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (or (eq (marker-buffer (car value))
+ (marker-buffer (cdr value)))
+ (signal 'error
+ (list "markers must be in the same buffer"
+ (car value) (cdr value))))
+ (abs (- (car value) (cdr value)))))))
+ (if value ; force it to be in 32-bit format.
+ (cons (ash value -16) (logand value 65535))
+ nil)))
+
+(defun xselect-convert-to-targets (selection type value)
+ ;; return a vector of atoms, but remove duplicates first.
+ (let* ((all (cons 'TIMESTAMP (mapcar 'car selection-converter-alist)))
+ (rest all))
+ (while rest
+ (cond ((memq (car rest) (cdr rest))
+ (setcdr rest (delq (car rest) (cdr rest))))
+ ((eq (car (cdr rest)) '_EMACS_INTERNAL) ; shh, it's a secret
+ (setcdr rest (cdr (cdr rest))))
+ (t
+ (setq rest (cdr rest)))))
+ (apply 'vector all)))
+
+(defun xselect-convert-to-delete (selection type value)
+ (x-disown-selection-internal selection)
+ ;; A return value of nil means that we do not know how to do this conversion,
+ ;; and replies with an "error". A return value of NULL means that we have
+ ;; done the conversion (and any side-effects) but have no value to return.
+ 'NULL)
+
+(defun xselect-convert-to-filename (selection type value)
+ (cond
+;;; ((extentp value)
+;;; (buffer-file-name (or (extent-buffer value)
+;;; (error "selection is in a killed buffer"))))
+ ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (buffer-file-name (or (marker-buffer (car value))
+ (error "selection is in a killed buffer"))))
+ (t nil)))
+
+(defun xselect-convert-to-charpos (selection type value)
+ (let (a b tmp)
+ (cond ((cond
+;;; ((extentp value)
+;;; (setq a (extent-start-position value)
+;;; b (extent-end-position value)))
+ ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (setq a (car value)
+ b (cdr value))))
+ (setq a (1- a) b (1- b)) ; zero-based
+ (if (< b a) (setq tmp a a b b tmp))
+ (cons 'SPAN
+ (vector (cons (ash a -16) (logand a 65535))
+ (cons (ash b -16) (logand b 65535))))))))
+
+(defun xselect-convert-to-lineno (selection type value)
+ (let (a b buf tmp)
+ (cond ((cond ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (setq a (marker-position (car value))
+ b (marker-position (cdr value))
+ buf (marker-buffer (car value))))
+;;; ((extentp value)
+;;; (setq buf (extent-buffer value)
+;;; a (extent-start-position value)
+;;; b (extent-end-position value)))
+ )
+ (save-excursion
+ (set-buffer buf)
+ (setq a (count-lines 1 a)
+ b (count-lines 1 b)))
+ (if (< b a) (setq tmp a a b b tmp))
+ (cons 'SPAN
+ (vector (cons (ash a -16) (logand a 65535))
+ (cons (ash b -16) (logand b 65535))))))))
+
+(defun xselect-convert-to-colno (selection type value)
+ (let (a b buf tmp)
+ (cond ((cond ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (setq a (car value)
+ b (cdr value)
+ buf (marker-buffer a)))
+;;; ((extentp value)
+;;; (setq buf (extent-buffer value)
+;;; a (extent-start-position value)
+;;; b (extent-end-position value)))
+ )
+ (save-excursion
+ (set-buffer buf)
+ (goto-char a)
+ (setq a (current-column))
+ (goto-char b)
+ (setq b (current-column)))
+ (if (< b a) (setq tmp a a b b tmp))
+ (cons 'SPAN
+ (vector (cons (ash a -16) (logand a 65535))
+ (cons (ash b -16) (logand b 65535))))))))
+
+(defun xselect-convert-to-os (selection type size)
+ (symbol-name system-type))
+
+(defun xselect-convert-to-host (selection type size)
+ (system-name))
+
+(defun xselect-convert-to-user (selection type size)
+ (user-full-name))
+
+(defun xselect-convert-to-class (selection type size)
+ x-emacs-application-class)
+
+;; We do not try to determine the name Emacs was invoked with,
+;; because it is not clean for a program's behavior to depend on that.
+(defun xselect-convert-to-name (selection type size)
+ "emacs")
+
+(defun xselect-convert-to-integer (selection type value)
+ (and (integerp value)
+ (cons (ash value -16) (logand value 65535))))
+
+(defun xselect-convert-to-atom (selection type value)
+ (and (symbolp value) value))
+
+(defun xselect-convert-to-identity (selection type value) ; used internally
+ (vector value))
+
+(setq selection-converter-alist
+ '((TEXT . xselect-convert-to-string)
+ (STRING . xselect-convert-to-string)
+ (TARGETS . xselect-convert-to-targets)
+ (LENGTH . xselect-convert-to-length)
+ (DELETE . xselect-convert-to-delete)
+ (FILE_NAME . xselect-convert-to-filename)
+ (CHARACTER_POSITION . xselect-convert-to-charpos)
+ (LINE_NUMBER . xselect-convert-to-lineno)
+ (COLUMN_NUMBER . xselect-convert-to-colno)
+ (OWNER_OS . xselect-convert-to-os)
+ (HOST_NAME . xselect-convert-to-host)
+ (USER . xselect-convert-to-user)
+ (CLASS . xselect-convert-to-class)
+ (NAME . xselect-convert-to-name)
+ (ATOM . xselect-convert-to-atom)
+ (INTEGER . xselect-convert-to-integer)
+ (_EMACS_INTERNAL . xselect-convert-to-identity)
+ ))
+
+(provide 'select)
+
+;;; select.el ends here.