mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-21 10:24:55 +00:00
314 lines
11 KiB
EmacsLisp
314 lines
11 KiB
EmacsLisp
;;; select.el --- lisp portion of standard selection support.
|
||
|
||
;; Keywords: internal
|
||
|
||
;; Copyright (c) 1993, 1994 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, Inc., 59 Temple Place - Suite 330,
|
||
;; Boston, MA 02111-1307, USA.
|
||
|
||
;;; Code:
|
||
|
||
;; This is for temporary compatibility with pre-release Emacs 19.
|
||
(defalias '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).
|
||
|
||
The selection may also be a cons of two markers pointing to the same buffer,
|
||
or an overlay. In these cases, the selection is considered to be the text
|
||
between the markers *at whatever time the selection is examined*.
|
||
Thus, editing done in the buffer after you specify the selection
|
||
can alter the effective value of the selection.
|
||
|
||
The data may also be a vector of valid non-vector selection values.
|
||
|
||
Interactively, the text of the region is used as the selection value
|
||
if the prefix arg is set."
|
||
(interactive (if (not current-prefix-arg)
|
||
(list 'PRIMARY (read-string "Set text for pasting: "))
|
||
(list 'PRIMARY (buffer-substring (region-beginning) (region-end)))))
|
||
;; 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))))))
|
||
(overlayp 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))))))
|
||
|
||
;;; 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 &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."
|
||
;; Check the data type of STRING.
|
||
(substring string 0 0)
|
||
(if push
|
||
(x-rotate-cut-buffers-internal 1))
|
||
(x-store-cut-buffer-internal 'CUT_BUFFER0 string))
|
||
|
||
|
||
;;; 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)
|
||
((overlayp value)
|
||
(save-excursion
|
||
(or (buffer-name (overlay-buffer value))
|
||
(error "selection is in a killed buffer"))
|
||
(set-buffer (overlay-buffer value))
|
||
(buffer-substring (overlay-start value)
|
||
(overlay-end 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))
|
||
((overlayp value)
|
||
(abs (- (overlay-end value) (overlay-start 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 ((overlayp value)
|
||
(buffer-file-name (or (overlay-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 ((overlayp value)
|
||
(setq a (overlay-start value)
|
||
b (overlay-end 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))))
|
||
((overlayp value)
|
||
(setq buf (overlay-buffer value)
|
||
a (overlay-start value)
|
||
b (overlay-end 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)))
|
||
((overlayp value)
|
||
(setq buf (overlay-buffer value)
|
||
a (overlay-start value)
|
||
b (overlay-end 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)
|
||
"Emacs")
|
||
|
||
;; 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)
|
||
(COMPOUND_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.
|