;;; select.el --- lisp portion of standard selection support
+;; Copyright (C) 1993-1994, 2001-2011 Free Software Foundation, Inc.
+
;; Maintainer: FSF
;; Keywords: internal
-;; Copyright (C) 1993, 1994, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-;; 2008, 2009, 2010, 2011 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
;;; Commentary:
+;; Based partially on earlier release by Lucid.
+
;;; Code:
(defcustom selection-coding-system nil
- "Coding system for communicating with other X clients.
+ "Coding system for communicating with other programs.
+For MS-Windows and MS-DOS:
+When sending or receiving text via selection and clipboard, the text
+is encoded or decoded by this coding system. The default value is
+the current system default encoding on 9x/Me, `utf-16le-dos'
+\(Unicode) on NT/W2K/XP, and `iso-latin-1-dos' on MS-DOS.
+
+For X Windows:
When sending text via selection and clipboard, if the target
data-type matches with the type of this coding system, it is used
for encoding the text. Otherwise (including the case that this
(set symbol value)))
(defvar next-selection-coding-system nil
- "Coding system for the next communication with other X clients.
+ "Coding system for the next communication with other programs.
Usually, `selection-coding-system' is used for communicating with
-other X clients. But, if this variable is set, it is used for
-the next communication only. After the communication, this
-variable is set to nil.")
+other programs (X Windows clients or MS Windows programs). But, if this
+variable is set, it is used for the next communication only.
+After the communication, this variable is set to nil.")
(declare-function x-get-selection-internal "xselect.c"
(selection-symbol target-type &optional time-stamp))
(symbolp data)
(integerp data)))
\f
-;;; Cut Buffer support
-
-(declare-function x-get-cut-buffer-internal "xselect.c")
-
-(defun x-get-cut-buffer (&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."
- (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)))
-
-(declare-function x-rotate-cut-buffers-internal "xselect.c")
-(declare-function x-store-cut-buffer-internal "xselect.c")
-
-(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 to 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."
- (or (stringp string) (signal 'wrong-type-argument (list 'stringp string)))
- (if push
- (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--int-to-cons (n)
(cons (ash n -16) (logand n 65535)))
-(defun xselect-convert-to-string (selection type value)
+(defun xselect-convert-to-string (_selection type value)
(let (str coding)
;; Get the actual string from VALUE.
(cond ((stringp value)
(setq next-selection-coding-system nil)
(cons type str))))
-(defun xselect-convert-to-length (selection type value)
+(defun xselect-convert-to-length (_selection _type value)
(let ((len (cond ((stringp value)
(length value))
((setq value (xselect--selection-bounds value))
(if len
(xselect--int-to-cons len))))
-(defun xselect-convert-to-targets (selection type value)
+(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)))
+ (let* ((all (cons 'TIMESTAMP
+ (cons 'MULTIPLE
+ (mapcar 'car selection-converter-alist))))
(rest all))
(while rest
(cond ((memq (car rest) (cdr rest))
(setq rest (cdr rest)))))
(apply 'vector all)))
-(defun xselect-convert-to-delete (selection type value)
+(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)
+(defun xselect-convert-to-filename (_selection _type value)
(when (setq value (xselect--selection-bounds value))
(buffer-file-name (nth 2 value))))
-(defun xselect-convert-to-charpos (selection type value)
+(defun xselect-convert-to-charpos (_selection _type value)
(when (setq value (xselect--selection-bounds value))
(let ((beg (1- (nth 0 value))) ; zero-based
(end (1- (nth 1 value))))
(cons 'SPAN (vector (xselect--int-to-cons (min beg end))
(xselect--int-to-cons (max beg end)))))))
-(defun xselect-convert-to-lineno (selection type value)
+(defun xselect-convert-to-lineno (_selection _type value)
(when (setq value (xselect--selection-bounds value))
(with-current-buffer (nth 2 value)
(let ((beg (line-number-at-pos (nth 0 value)))
(cons 'SPAN (vector (xselect--int-to-cons (min beg end))
(xselect--int-to-cons (max beg end))))))))
-(defun xselect-convert-to-colno (selection type value)
+(defun xselect-convert-to-colno (_selection _type value)
(when (setq value (xselect--selection-bounds value))
(with-current-buffer (nth 2 value)
(let ((beg (progn (goto-char (nth 0 value)) (current-column)))
(cons 'SPAN (vector (xselect--int-to-cons (min beg end))
(xselect--int-to-cons (max beg end))))))))
-(defun xselect-convert-to-os (selection type size)
+(defun xselect-convert-to-os (_selection _type _size)
(symbol-name system-type))
-(defun xselect-convert-to-host (selection type size)
+(defun xselect-convert-to-host (_selection _type _size)
(system-name))
-(defun xselect-convert-to-user (selection type size)
+(defun xselect-convert-to-user (_selection _type _size)
(user-full-name))
-(defun xselect-convert-to-class (selection type size)
+(defun xselect-convert-to-class (_selection _type _size)
"Convert selection to class.
This function returns the string \"Emacs\"."
"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)
+(defun xselect-convert-to-name (_selection _type _size)
"Convert selection to name.
This function returns the string \"emacs\"."
"emacs")
-(defun xselect-convert-to-integer (selection type value)
+(defun xselect-convert-to-integer (_selection _type value)
(and (integerp value)
(xselect--int-to-cons value)))
-(defun xselect-convert-to-atom (selection type value)
+(defun xselect-convert-to-atom (_selection _type value)
(and (symbolp value) value))
-(defun xselect-convert-to-identity (selection type value) ; used internally
+(defun xselect-convert-to-identity (_selection _type value) ; used internally
(vector value))
+;; Null target that tells clipboard managers we support SAVE_TARGETS
+;; (see freedesktop.org Clipboard Manager spec).
+(defun xselect-convert-to-save-targets (selection _type _value)
+ (when (eq selection 'CLIPBOARD)
+ 'NULL))
+
(setq selection-converter-alist
'((TEXT . xselect-convert-to-string)
(COMPOUND_TEXT . xselect-convert-to-string)
(NAME . xselect-convert-to-name)
(ATOM . xselect-convert-to-atom)
(INTEGER . xselect-convert-to-integer)
+ (SAVE_TARGETS . xselect-convert-to-save-targets)
(_EMACS_INTERNAL . xselect-convert-to-identity)))
(provide 'select)