mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-27 10:54:40 +00:00
125 lines
4.4 KiB
EmacsLisp
125 lines
4.4 KiB
EmacsLisp
;;; talk.el --- allow several users to talk to each other through Emacs
|
|
|
|
;; Copyright (C) 1995, 2001, 2002, 2003, 2004, 2005,
|
|
;; 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
|
|
|
|
;; Maintainer: FSF
|
|
;; Keywords: comm, frames
|
|
|
|
;; 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; This is a multi-user talk package that runs in Emacs.
|
|
;; Use talk-connect to bring a new person into the conversation.
|
|
|
|
;;; Code:
|
|
|
|
(defvar talk-display-alist nil
|
|
"Alist of displays on which Emacs talk is now running.
|
|
Each element has the form (DISPLAY FRAME BUFFER).")
|
|
|
|
;;;###autoload
|
|
(defun talk-connect (display)
|
|
"Connect to display DISPLAY for the Emacs talk group."
|
|
(interactive "sTalk to display: ")
|
|
;; Make sure we have an entry for the current display.
|
|
(let ((mydisp (cdr (assq 'display (frame-parameters (selected-frame))))))
|
|
(talk-add-display mydisp))
|
|
;; Make sure we have an entry for the specified display.
|
|
(talk-add-display display)
|
|
;; Add the new buffers to all talk frames.
|
|
(talk-update-buffers))
|
|
|
|
;;;###autoload
|
|
(defun talk ()
|
|
"Connect to the Emacs talk group from the current X display or tty frame."
|
|
(interactive)
|
|
(let ((type (frame-live-p (selected-frame)))
|
|
(display (frame-terminal (selected-frame))))
|
|
(if (or (eq type t) (eq type 'x))
|
|
(talk-add-display
|
|
(terminal-name (frame-terminal (selected-frame))))
|
|
(error "Unknown frame type")))
|
|
(talk-update-buffers))
|
|
|
|
(defun talk-add-display (display)
|
|
(let* ((elt (assoc display talk-display-alist))
|
|
(name (concat "*talk-" display "*"))
|
|
frame buffer)
|
|
(if (and elt (frame-live-p (nth 1 elt)))
|
|
(setq frame (nth 1 elt))
|
|
(setq frame (make-frame-on-display display (list (cons 'name name)))))
|
|
(if (not (and elt (buffer-name (get-buffer (setq buffer (nth 2 elt))))))
|
|
(setq buffer (get-buffer-create name)))
|
|
(add-to-list 'delete-frame-functions 'talk-handle-delete-frame)
|
|
(setq talk-display-alist
|
|
(cons (list display frame buffer) (delq elt talk-display-alist)))))
|
|
|
|
(defun talk-handle-delete-frame (frame)
|
|
(dolist (d talk-display-alist)
|
|
(when (eq (nth 1 d) frame)
|
|
(setq talk-display-alist (delq d talk-display-alist))
|
|
(talk-update-buffers))))
|
|
|
|
(defun talk-disconnect ()
|
|
"Disconnect this display from the Emacs talk group."
|
|
(interactive)
|
|
(let* ((mydisp (cdr (assq 'display (frame-parameters (selected-frame)))))
|
|
(elt (assoc mydisp talk-display-alist)))
|
|
(delete-frame (nth 1 elt))
|
|
(kill-buffer (nth 2 elt))
|
|
(setq talk-display-alist (delq elt talk-display-alist))
|
|
(talk-update-buffers)))
|
|
|
|
(defun talk-update-buffers ()
|
|
"Update all the talk frames so that each shows all the talk buffers."
|
|
(let ((tail talk-display-alist))
|
|
(while tail
|
|
(let ((frame (nth 1 (car tail)))
|
|
(this-buffer (nth 2 (car tail)))
|
|
(buffers
|
|
(mapcar (function (lambda (elt) (nth 2 elt)))
|
|
talk-display-alist)))
|
|
;; Put this display's own talk buffer
|
|
;; at the front of the list.
|
|
(setq buffers (cons this-buffer (delq this-buffer buffers)))
|
|
(talk-split-up-frame frame buffers))
|
|
(setq tail (cdr tail)))))
|
|
|
|
(defun talk-split-up-frame (frame buffers)
|
|
"Split FRAME into equal-sized windows displaying the buffers in BUFFERS.
|
|
Select the first of these windows, displaying the first of the buffers."
|
|
(let ((lines-per-buffer (/ (frame-height frame) (length buffers)))
|
|
(old-frame (selected-frame)))
|
|
(unwind-protect
|
|
(progn
|
|
(select-frame frame)
|
|
(select-window (frame-first-window frame))
|
|
(delete-other-windows)
|
|
(while (progn
|
|
(switch-to-buffer (car buffers))
|
|
(setq buffers (cdr buffers)))
|
|
(split-window-vertically lines-per-buffer)
|
|
(other-window 1))
|
|
(select-window (frame-first-window frame)))
|
|
(select-frame old-frame))))
|
|
|
|
(provide 'talk)
|
|
|
|
;; arch-tag: 7ab0ad88-1788-4886-a44c-ae685e6f8a1a
|
|
;;; talk.el ends here
|