blob: f6aae287f2c59b78a91896f6b5015fb157d072b5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
;;; talk.el --- allow several users to talk to each other through Emacs
;; Copyright (C) 1995, 2001-2018 Free Software Foundation, Inc.
;; Maintainer: emacs-devel@gnu.org
;; 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 <https://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))))
(if (or (eq type t) (eq type 'x))
(talk-add-display
(terminal-name (frame-terminal)))
(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-below lines-per-buffer)
(other-window 1))
(select-window (frame-first-window frame)))
(select-frame old-frame))))
(provide 'talk)
;;; talk.el ends here
|
