--- /dev/null
+;;; riece-unread.el --- mark channels where new messages arrived -*- lexical-binding: t -*-
+;; Copyright (C) 1998-2003 Daiki Ueno
+
+;; Author: Daiki Ueno <ueno@unixuser.org>
+;; Keywords: IRC, riece
+
+;; This file is part of Riece.
+
+;; This program 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.
+
+;; This program 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; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; NOTE: This is an add-on module for Riece.
+
+;; This add-on marks channels where new messages arrived.
+
+;; You can check the unread channels via `C-c g' in the commands
+;; buffer, by adding the following lines to ~/.riece/init.el:
+
+;; (add-hook 'riece-guess-channel-try-functions
+;; 'riece-guess-channel-from-unread)
+
+;;; Code:
+
+(require 'riece-message)
+(require 'riece-commands)
+(require 'riece-signal)
+(require 'riece-highlight)
+
+(defgroup riece-unread nil
+ "Mark unread channels."
+ :tag "Unread"
+ :prefix "riece-"
+ :group 'riece)
+
+(defface riece-channel-list-unread-face
+ '((((class color)
+ (background dark))
+ (:foreground "orange"))
+ (((class color)
+ (background light))
+ (:foreground "firebrick"))
+ (t
+ (:bold t)))
+ "Face used for displaying unread channels."
+ :group 'riece-highlight-faces)
+(defvar riece-channel-list-unread-face 'riece-channel-list-unread-face)
+
+(unless (riece-facep 'riece-modeline-unread-face)
+ ;; In Emacs, set-face-doc-string is an alias to
+ ;; set-face-documentation, but we use the former since it is
+ ;; available in both Emacs and XEmacs.
+ (make-face 'riece-modeline-unread-face)
+ (set-face-doc-string
+ 'riece-modeline-unread-face
+ "Face used for displaying unread channels in modeline.")
+ (if (featurep 'xemacs)
+ (set-face-parent 'riece-modeline-unread-face 'modeline))
+ (set-face-foreground 'riece-modeline-unread-face
+ (face-foreground 'riece-channel-list-unread-face)))
+
+(defvar riece-unread-channels nil)
+
+(defconst riece-unread-description
+ "Mark channels where new messages arrived.")
+
+(defun riece-unread-after-display-message-function (message)
+ (if (get 'riece-unread 'riece-addon-enabled)
+ (let ((target (if (riece-message-private-p message)
+ (riece-message-speaker message)
+ (riece-message-target message))))
+ (unless (or (riece-message-own-p message)
+ (riece-message-type message)
+ (riece-identity-equal target riece-current-channel)
+ (riece-identity-member target riece-unread-channels))
+ (setq riece-unread-channels (cons target riece-unread-channels))
+ (riece-emit-signal 'channel-list-changed)))))
+
+(defun riece-unread-after-switch-to-channel-function (_last)
+ (if (get 'riece-unread 'riece-addon-enabled)
+ (setq riece-unread-channels
+ (delq (car (riece-identity-member riece-current-channel
+ riece-unread-channels))
+ riece-unread-channels))))
+
+(defun riece-unread-format-identity-for-channel-list-buffer (index identity)
+ (if (and (get 'riece-unread 'riece-addon-enabled)
+ (riece-identity-member identity riece-unread-channels))
+ (concat (format "%2d:!" index)
+ (riece-format-identity identity))))
+
+(defun riece-unread-format-identity-for-channel-list-indicator (index identity)
+ (if (and (get 'riece-unread 'riece-addon-enabled)
+ (riece-identity-member identity riece-unread-channels))
+ (let ((string (riece-format-identity identity))
+ (start 0))
+ ;; Escape % -> %%.
+ (while (string-match "%" string start)
+ (setq start (1+ (match-end 0))
+ string (replace-match "%%" nil nil string)))
+ (list (format "%d:" index)
+ (riece-propertize-modeline-string
+ string 'face 'riece-modeline-unread-face)))))
+
+(defun riece-unread-switch-to-channel ()
+ (interactive)
+ (if riece-unread-channels
+ (let ((channel (car riece-unread-channels)))
+ (if (riece-identity-member channel riece-current-channels)
+ (riece-command-switch-to-channel channel)
+ (setq riece-unread-channels
+ (delete channel riece-unread-channels))
+ (riece-unread-switch-to-channel)))
+ (error "No unread channel!")))
+
+(defun riece-guess-channel-from-unread ()
+ (reverse riece-unread-channels))
+
+(defun riece-unread-requires ()
+ (let (requires)
+ (if (memq 'riece-highlight riece-addons)
+ (setq requires (cons 'riece-highlight requires)))
+ ;; To override riece-history's channel mark in the channel list buffer.
+ (if (memq 'riece-history riece-addons)
+ (setq requires (cons 'riece-history requires)))
+;;; (if (memq 'riece-guess riece-addons)
+;;; (setq requires (cons 'riece-guess requires)))
+ requires))
+
+(defun riece-unread-insinuate ()
+ (add-hook 'riece-after-display-message-functions
+ 'riece-unread-after-display-message-function)
+ (add-hook 'riece-after-switch-to-channel-functions
+ 'riece-unread-after-switch-to-channel-function)
+ (add-hook 'riece-format-identity-for-channel-list-buffer-functions
+ 'riece-unread-format-identity-for-channel-list-buffer)
+ (add-hook 'riece-format-identity-for-channel-list-indicator-functions
+ 'riece-unread-format-identity-for-channel-list-indicator)
+ (if (memq 'riece-highlight riece-addons)
+ (setq riece-channel-list-mark-face-alist
+ (cons '(?! . riece-channel-list-unread-face)
+ riece-channel-list-mark-face-alist)))
+;;; (if (memq 'riece-guess riece-addons)
+;;; (add-hook 'riece-guess-channel-try-functions
+;;; 'riece-guess-channel-from-unread))
+ )
+
+(defun riece-unread-uninstall ()
+ (remove-hook 'riece-after-display-message-functions
+ 'riece-unread-after-display-message-function)
+ (remove-hook 'riece-after-switch-to-channel-functions
+ 'riece-unread-after-switch-to-channel-function)
+ (remove-hook 'riece-format-identity-for-channel-list-buffer-functions
+ 'riece-unread-format-identity-for-channel-list-buffer)
+ (remove-hook 'riece-format-identity-for-channel-list-indicator-functions
+ 'riece-unread-format-identity-for-channel-list-indicator)
+ (setq riece-channel-list-mark-face-alist
+ (delq (assq ?! riece-channel-list-mark-face-alist)
+ riece-channel-list-mark-face-alist))
+;;; (if (memq 'riece-guess riece-addons)
+;;; (add-hook 'riece-guess-channel-try-functions
+;;; 'riece-guess-channel-from-unread))
+ )
+
+(defvar riece-command-mode-map)
+(defvar riece-dialogue-mode-map)
+(defvar riece-channel-list-mode-map)
+(defun riece-unread-enable ()
+ (define-key riece-command-mode-map
+ "\C-c\C-u" 'riece-unread-switch-to-channel)
+ (define-key riece-dialogue-mode-map
+ "u" 'riece-unread-switch-to-channel)
+ (define-key riece-channel-list-mode-map
+ "u" 'riece-unread-switch-to-channel)
+ (riece-emit-signal 'channel-list-changed))
+
+(defun riece-unread-disable ()
+ (define-key riece-command-mode-map
+ "\C-c\C-u" nil)
+ (define-key riece-dialogue-mode-map
+ "u" nil)
+ (define-key riece-channel-list-mode-map
+ "u" nil)
+ (setq riece-unread-channels nil)
+ (riece-emit-signal 'channel-list-changed))
+
+(provide 'riece-unread)
+
+;;; riece-unread.el ends here