;; erc-button.el --- A way of buttonizing certain things in ERC buffers
;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;; 2006 Free Software Foundation, Inc.
+;; 2006, 2007, 2008 Free Software Foundation, Inc.
;; Author: Mario Lang <mlang@delysid.org>
;; Keywords: irc, button, url, regexp
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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.
+;; 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
;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
"This mode buttonizes all messages according to `erc-button-alist'."
((add-hook 'erc-insert-modify-hook 'erc-button-add-buttons 'append)
(add-hook 'erc-send-modify-hook 'erc-button-add-buttons 'append)
- (add-hook 'erc-complete-functions 'erc-button-next))
+ (add-hook 'erc-complete-functions 'erc-button-next)
+ (add-hook 'erc-mode-hook 'erc-button-setup))
((remove-hook 'erc-insert-modify-hook 'erc-button-add-buttons)
(remove-hook 'erc-send-modify-hook 'erc-button-add-buttons)
- (remove-hook 'erc-complete-functions 'erc-button-next)))
-
-;; Make XEmacs use `erc-button-face'.
-(when (featurep 'xemacs)
- (add-hook 'erc-mode-hook
- (lambda () (set (make-local-variable 'widget-button-face) nil))))
+ (remove-hook 'erc-complete-functions 'erc-button-next)
+ (remove-hook 'erc-mode-hook 'erc-button-setup)
+ (when (featurep 'xemacs)
+ (dolist (buffer (erc-buffer-list))
+ (with-current-buffer buffer
+ (kill-local-variable 'widget-button-face))))))
;;; Variables
(concat "\\(www\\.\\|\\(s?https?\\|"
"ftp\\|file\\|gopher\\|news\\|telnet\\|wais\\|mailto\\):\\)"
"\\(//[-a-zA-Z0-9_.]+:[0-9]*\\)?"
- "[-a-zA-Z0-9_=!?#$@~`%&*+\\/:;.,]+[-a-zA-Z0-9_=#$@~`%&*+\\/]")
+ "[-a-zA-Z0-9_=!?#$@~`%&*+\\/:;.,()]+[-a-zA-Z0-9_=#$@~`%&*+\\/()]")
"Regular expression that matches URLs."
:group 'erc-button
:type 'regexp)
(define-key map (kbd "<button2>") 'erc-button-click-button)
(define-key map (kbd "<mouse-2>") 'erc-button-click-button))
(define-key map (kbd "TAB") 'erc-button-next)
+ (define-key map (kbd "<backtab>") 'erc-button-previous)
(set-keymap-parent map erc-mode-map)
map)
"Local keymap for ERC buttons.")
(modify-syntax-entry ?\\ "w" table)
table)
"Syntax table used when buttonizing messages.
-This syntax table should make all the legal nick characters word
+This syntax table should make all the valid nick characters word
constituents.")
+(defvar erc-button-keys-added nil
+ "Internal variable used to keep track of whether we've added the
+global-level ERC button keys yet.")
+
+(defun erc-button-setup ()
+ "Add ERC mode-level button movement keys. This is only done once."
+ ;; Make XEmacs use `erc-button-face'.
+ (when (featurep 'xemacs)
+ (set (make-local-variable 'widget-button-face) nil))
+ ;; Add keys.
+ (unless erc-button-keys-added
+ (define-key erc-mode-map (kbd "<backtab>") 'erc-button-previous)
+ (setq erc-button-keys-added t)))
+
(defun erc-button-add-buttons ()
"Find external references in the current buffer and make buttons of them.
\"External references\" are things like URLs, as
(setq bounds (bounds-of-thing-at-point 'word))
(setq word (buffer-substring-no-properties
(car bounds) (cdr bounds)))
- (if (erc-get-server-user word)
- (erc-button-add-button (car bounds) (cdr bounds)
- fun t (list word)))))))
+ (when (or (and (erc-server-buffer-p) (erc-get-server-user word))
+ (and erc-channel-users (erc-get-channel-user word)))
+ (erc-button-add-button (car bounds) (cdr bounds)
+ fun t (list word)))))))
(defun erc-button-add-buttons-1 (regexp entry)
"Search through the buffer for matches to ENTRY and add buttons."
(error "No next button"))
t)))
+(defun erc-button-previous ()
+ "Go to the previous button in this buffer."
+ (interactive)
+ (let ((here (point)))
+ (when (< here (erc-beg-of-input-line))
+ (while (and (get-text-property here 'erc-callback)
+ (not (= here (point-min))))
+ (setq here (1- here)))
+ (while (and (not (get-text-property here 'erc-callback))
+ (not (= here (point-min))))
+ (setq here (1- here)))
+ (if (> here (point-min))
+ (goto-char here)
+ (error "No previous button"))
+ t)))
+
(defun erc-browse-emacswiki (thing)
"Browse to thing in the emacs-wiki."
(browse-url (concat erc-emacswiki-url thing)))