--- /dev/null
+;;; riece-history.el --- manage history of channel shifting -*- 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.
+
+;; You can check recently visited 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-history)
+
+;;; Code:
+
+(require 'riece-options)
+(require 'riece-globals)
+(require 'riece-identity)
+(require 'riece-signal)
+(require 'ring)
+(require 'riece-highlight)
+
+(defgroup riece-history nil
+ "Manage history of channel shifting."
+ :tag "History"
+ :prefix "riece-"
+ :group 'riece)
+
+(defcustom riece-channel-history-length 3
+ "Length of riece-channel-history."
+ :type 'integer
+ :group 'riece-history)
+
+(defface riece-channel-list-history-face
+ '((((class color)
+ (background dark))
+ (:foreground "PaleTurquoise"))
+ (((class color)
+ (background light))
+ (:foreground "SeaGreen3"))
+ (t
+ (:bold t)))
+ "Face used for displaying history channels."
+ :group 'riece-highlight-faces)
+(defvar riece-channel-list-history-face 'riece-channel-list-history-face)
+
+(unless (riece-facep 'riece-modeline-history-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-history-face)
+ (set-face-doc-string
+ 'riece-modeline-history-face
+ "Face used for displaying history channels in modeline.")
+ (if (featurep 'xemacs)
+ (set-face-parent 'riece-modeline-history-face 'modeline))
+ (set-face-foreground 'riece-modeline-history-face
+ (face-foreground 'riece-channel-list-history-face)))
+
+(defvar riece-modeline-history-face 'riece-modeline-history-face)
+
+(defvar riece-channel-history nil)
+
+(defconst riece-history-description
+ "Manage history of channel shifting.")
+
+(defun riece-guess-channel-from-history ()
+ (let ((length (ring-length riece-channel-history))
+ (index 0)
+ result)
+ (while (< index length)
+ (setq result (cons (ring-ref riece-channel-history index) result)
+ index (1+ index)))
+ (nreverse result)))
+
+(defun riece-history-format-identity-for-channel-list-buffer (index identity)
+ (if (and (get 'riece-history 'riece-addon-enabled)
+ (not (ring-empty-p riece-channel-history))
+ (riece-identity-equal identity (ring-ref riece-channel-history 0)))
+ (concat (format "%2d:+" index)
+ (riece-format-identity identity))))
+
+(defun riece-history-format-identity-for-channel-list-indicator (index
+ identity)
+ (if (and (get 'riece-history 'riece-addon-enabled)
+ (not (ring-empty-p riece-channel-history))
+ (riece-identity-equal identity (ring-ref riece-channel-history 0)))
+ (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-history-face)))))
+
+;;; (defun riece-history-requires ()
+;;; (if (memq 'riece-guess riece-addons)
+;;; '(riece-guess)))
+
+(defun riece-history-after-switch-to-channel-functions (last)
+ (if (and (get 'riece-history 'riece-addon-enabled) last
+ (not (riece-identity-equal last riece-current-channel)))
+ (ring-insert riece-channel-history last)))
+
+(defun riece-history-requires ()
+ (if (memq 'riece-highlight riece-addons)
+ '(riece-highlight)))
+
+(defun riece-history-insinuate ()
+ (add-hook 'riece-after-switch-to-channel-functions
+ 'riece-history-after-switch-to-channel-functions)
+ (add-hook 'riece-format-identity-for-channel-list-buffer-functions
+ 'riece-history-format-identity-for-channel-list-buffer)
+ (add-hook 'riece-format-identity-for-channel-list-indicator-functions
+ 'riece-history-format-identity-for-channel-list-indicator)
+ (if (memq 'riece-highlight riece-addons)
+ (setq riece-channel-list-mark-face-alist
+ (cons '(?+ . riece-channel-list-history-face)
+ riece-channel-list-mark-face-alist)))
+;;; (if (memq 'riece-guess riece-addons)
+;;; (add-hook 'riece-guess-channel-try-functions
+;;; 'riece-guess-channel-from-history))
+ )
+
+(defun riece-history-uninstall ()
+ (remove-hook 'riece-after-switch-to-channel-functions
+ 'riece-history-after-switch-to-channel-functions)
+ (remove-hook 'riece-format-identity-for-channel-list-buffer-functions
+ 'riece-history-format-identity-for-channel-list-buffer)
+ (remove-hook 'riece-format-identity-for-channel-list-indicator-functions
+ 'riece-history-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)))
+
+(defun riece-history-enable ()
+ (setq riece-channel-history
+ (make-ring riece-channel-history-length))
+ (riece-emit-signal 'channel-list-changed))
+
+(defun riece-history-disable ()
+ (setq riece-channel-history nil)
+ (riece-emit-signal 'channel-list-changed))
+
+(provide 'riece-history)
+
+;;; riece-history.el ends here
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