X-Git-Url: https://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Friece-history.el;h=79dd38909861c4df12f78995c6807ae99ef6b352;hb=8bb0858f2815a32b2cd471fbdfbda2e86e82eb07;hp=6541febee5c9e8b288f9169c7d766fbc2875d3dd;hpb=a90da5167ee52cbf7b1320a4c6a4465b8b10075d;p=riece

diff --git a/lisp/riece-history.el b/lisp/riece-history.el
index 6541feb..79dd389 100644
--- a/lisp/riece-history.el
+++ b/lisp/riece-history.el
@@ -1,4 +1,4 @@
-;;; riece-history.el --- channel history management add-on
+;;; riece-history.el --- manage history of channel shifting
 ;; Copyright (C) 1998-2003 Daiki Ueno
 
 ;; Author: Daiki Ueno <ueno@unixuser.org>
@@ -23,6 +23,8 @@
 
 ;;; 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:
 
@@ -35,10 +37,11 @@
 (require 'riece-globals)
 (require 'riece-highlight)
 (require 'riece-identity)
+(require 'riece-signal)
 (require 'ring)
 
 (defgroup riece-history nil
-  "Channel history"
+  "Manage history of channel shifting."
   :tag "History"
   :prefix "riece-"
   :group 'riece)
@@ -61,8 +64,23 @@
   :group 'riece-highlight-faces)
 (defvar riece-channel-list-history-face 'riece-channel-list-history-face)
 
+(unless (riece-facep 'riece-modeline-history-face)
+  (make-face '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)
 
+(defvar riece-history-enabled 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)
@@ -73,41 +91,35 @@
     (nreverse result)))
 
 (defun riece-history-format-identity-for-channel-list-buffer (index identity)
-  (if (and (not (ring-empty-p riece-channel-history))
+  (if (and riece-history-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 (not (ring-empty-p riece-channel-history))
+  (if (and riece-history-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)
-	    extent)
+	    (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-channel-list-history-face)))))
+	       string 'face 'riece-modeline-history-face)))))
 
 ;;; (defun riece-history-requires ()
 ;;;   (if (memq 'riece-guess riece-addons)
 ;;;       '(riece-guess)))
 
 (defun riece-history-insinuate ()
-  (add-hook 'riece-startup-hook
-	    (lambda ()
-	      (setq riece-channel-history
-		    (make-ring riece-channel-history-length))))
-  (add-hook 'riece-exit-hook
-	    (lambda ()
-	      (setq riece-channel-history nil)))
   (add-hook 'riece-after-switch-to-channel-functions
 	    (lambda (last)
-	      (if (and last
+	      (if (and riece-history-enabled last
 		       (not (riece-identity-equal last riece-current-channel)))
 		  (ring-insert riece-channel-history last))))
   (add-hook 'riece-format-identity-for-channel-list-buffer-functions
@@ -123,7 +135,17 @@
 ;;;		'riece-guess-channel-from-history))
   )
 
+(defun riece-history-enable ()
+  (setq riece-channel-history
+	(make-ring riece-channel-history-length))
+  (setq riece-history-enabled t)
+  (riece-emit-signal 'channel-list-changed))
+
+(defun riece-history-disable ()
+  (setq riece-channel-history nil
+	riece-history-enabled nil)
+  (riece-emit-signal 'channel-list-changed))
+
 (provide 'riece-history)
 
 ;;; riece-history.el ends here
-