jabber-chatbuffer.el

   1 ;; jabber-chatbuffer.el - functions common to all chat buffers
   2
   3 ;; Copyright (C) 2005, 2007, 2008 - Magnus Henoch - mange@freemail.hu
   4
   5 ;; This file is a part of jabber.el.
   6
   7 ;; This program is free software; you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation; either version 2 of the License, or
  10 ;; (at your option) any later version.
  11
  12 ;; This program is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with this program; if not, write to the Free Software
  19 ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20
  21 (require 'jabber-keymap)
  22
  23 (defvar jabber-point-insert nil
  24   "Position where the message being composed starts")
  25
  26 (defvar jabber-send-function nil
  27   "Function for sending a message from a chat buffer.")
  28
  29 (defvar jabber-chat-mode-hook nil
  30   "Hook called at the end of `jabber-chat-mode'.
  31 Note that functions in this hook have no way of knowing
  32 what kind of chat buffer is being created.")
  33
  34 (defcustom jabber-chat-fill-long-lines t
  35   "If non-nil, fill long lines in chat buffers.
  36 Lines are broken at word boundaries at the width of the
  37 window or at `fill-column', whichever is shorter."
  38   :group 'jabber-chat
  39   :type 'boolean)
  40
  41 (defvar jabber-chat-ewoc nil
  42   "The ewoc showing the messages of this chat buffer.")
  43
  44 ;;;###autoload
  45 (defvar jabber-buffer-connection nil
  46   "The connection used by this buffer.")
  47 ;;;###autoload
  48 (make-variable-buffer-local 'jabber-buffer-connection)
  49
  50 (defun jabber-chat-mode (jc ewoc-pp)
  51   "\\{jabber-chat-mode-map}"
  52   (kill-all-local-variables)
  53   ;; Make sure to set this variable somewhere
  54   (make-local-variable 'jabber-send-function)
  55
  56   (setq jabber-buffer-connection jc)
  57
  58   (make-local-variable 'scroll-conservatively)
  59   (setq scroll-conservatively 5)
  60
  61   (make-local-variable 'jabber-point-insert)
  62   (make-local-variable 'jabber-chat-ewoc)
  63   (unless jabber-chat-ewoc
  64     (setq jabber-chat-ewoc
  65           (ewoc-create ewoc-pp nil "---"))
  66     (goto-char (point-max))
  67     (put-text-property (point-min) (point) 'read-only t)
  68     (let ((inhibit-read-only t))
  69       (put-text-property (point-min) (point) 'front-sticky t)
  70       (put-text-property (point-min) (point) 'rear-nonsticky t))
  71     (setq jabber-point-insert (point-marker)))
  72
  73   ;;(setq header-line-format jabber-chat-header-line-format)
  74
  75   (setq major-mode 'jabber-chat-mode
  76         mode-name "jabber-chat")
  77   (use-local-map jabber-chat-mode-map)
  78
  79   (if (fboundp 'run-mode-hooks)
  80       (run-mode-hooks 'jabber-chat-mode-hook)
  81     (run-hooks 'jabber-chat-mode-hook)))
  82
  83 (put 'jabber-chat-mode 'mode-class 'special)
  84
  85 ;; Spell check only what you're currently writing
  86 (defun jabber-chat-mode-flyspell-verify ()
  87   (>= (point) jabber-point-insert))
  88 (put 'jabber-chat-mode 'flyspell-mode-predicate
  89   'jabber-chat-mode-flyspell-verify)
  90
  91 (defvar jabber-chat-mode-map
  92   (let ((map (make-sparse-keymap)))
  93     (set-keymap-parent map jabber-common-keymap)
  94     (define-key map "\r" 'jabber-chat-buffer-send)
  95     map))
  96
  97 (defun jabber-chat-buffer-send ()
  98   (interactive)
  99   ;; If user accidentally hits RET without writing anything, just
 100   ;; ignore it.
 101   (when (plusp (- (point-max) jabber-point-insert))
 102     ;; If connection was lost...
 103     (unless (memq jabber-buffer-connection jabber-connections)
 104       ;; ...maybe there is a new connection to the same account.
 105       (let ((new-jc (jabber-find-active-connection jabber-buffer-connection)))
 106         (if new-jc
 107             ;; If so, just use it.
 108             (setq jabber-buffer-connection new-jc)
 109           ;; Otherwise, ask for a new account.
 110           (setq jabber-buffer-connection (jabber-read-account t)))))
 111
 112     (let ((body (delete-and-extract-region jabber-point-insert (point-max))))
 113       (funcall jabber-send-function jabber-buffer-connection body))))
 114
 115 (defun jabber-chat-buffer-fill-long-lines ()
 116   "Fill lines that are wider than the window width."
 117   ;; This was mostly stolen from article-fill-long-lines
 118   (interactive)
 119   (save-excursion
 120     (let ((inhibit-read-only t)
 121           (width (window-width (get-buffer-window (current-buffer)))))
 122       (save-restriction
 123         (goto-char (point-min))
 124         (let ((adaptive-fill-mode nil)) ;Why?  -sm
 125           (while (not (eobp))
 126             (end-of-line)
 127             (when (>= (current-column) (min fill-column width))
 128               (narrow-to-region (min (1+ (point)) (point-max))
 129                                 (point-at-bol))
 130               (let ((goback (point-marker)))
 131                 (fill-paragraph nil)
 132                 (goto-char (marker-position goback)))
 133               (widen))
 134             (forward-line 1)))))))
 135
 136 (provide 'jabber-chatbuffer)
 137 ;; arch-tag: 917e5b60-5894-4c49-b3bc-12e1f97ffdc6