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;;; html-imenu --- imneu suport for html modes
;;
;; This is a slightly modified version of
;; html-helper-imenu.el. This version comes with nXhtml.
(defconst html-imenu:version "0.9") ;;Version:
;; Last-Updated: 2008-09-30T19:22:05+0200 Tue
;;
;; ~/share/emacs/pkg/html/html-helper-imenu.el ---
;;
;; $Id: html-helper-imenu.el,v 1.11 2004/03/23 07:39:37 harley Exp $
;;
;; Author: Harley Gorrell <harley@panix.com>
;; URL: http://www.mahalito.net/~harley/elisp/html-helper-imenu.el
;; License: GPL v2
;; Keywords: html-helper, imenu, html, table of contents
;;; Commentary:
;; * Adds an indented table of contents to the menubar
;; * The regexp only matches headers on a single line
;; and well formed tags. (Which is pretty common.)
;;
;; Put somthing like the following in your .emacs:
;; (autoload 'html-helper-imenu-setup "html-helper-imenu")
;; (add-hook 'html-helper-mode-hook 'html-helper-imenu-setup)
;;
;; While this was originaly written for html-helper,
;; It will work with sgml-mode and others.
;;
;; http://www.santafe.edu/~nelson/hhm-beta/html-helper-mode.el
;;; History:
;;
;; 1998-06-25 : added regexp
;; 2003-03-18 : updated contact info
;; 2004-03-22 : minor clean up
;; 2007-11-23 : changed setup function to do nothing if done already
;;; Code:
(eval-when-compile (require 'imenu))
(defvar html-imenu-title "Index"
"*Title of the menu which will be added to the menubar.")
(defvar html-imenu-regexp
"\\s-*<h\\([1-9]\\)[^\n<>]*>\\(<[^\n<>]*>\\)*\\s-*\\([^\n<>]*\\)"
"*A regular expression matching a head line to be added to the menu.
The first `match-string' should be a number from 1-9.
The second `match-string' matches extra tags and is ignored.
The third `match-string' will be the used in the menu.")
;; Make an index for imenu
(defun html-imenu-index ()
"Return an table of contents for an html buffer for use with Imenu."
(let ((space ?\ ) ; a char
(toc-index '())
toc-str)
(save-excursion
(goto-char (point-min))
(save-match-data
(while (re-search-forward html-imenu-regexp nil t)
(setq toc-str
(concat
(make-string
(* 6 (- (string-to-number (match-string 1)) 1))
space)
(match-string 3)))
(beginning-of-line)
(setq toc-index (cons (cons toc-str (point)) toc-index))
(end-of-line))))
(nreverse toc-index)))
(defun html-imenu-setup ()
"Setup the variables to support imenu."
(interactive)
;; Fix-me: It looks like this function has to be called every time
;; switching to some html mode in mumamo. Values are "survived" by
;; mumamo, but the menu item disappears.
;;(message "html-imenu-setup imenu-create-index-function =%s" imenu-create-index-function)
(unless nil ;(eq imenu-create-index-function 'html-imenu-index)
(setq imenu-create-index-function 'html-imenu-index)
(set (make-local-variable 'imenu-sort-function) nil) ; sorting the menu defeats the purpose
(imenu-add-to-menubar html-imenu-title)
;; Run an update to make it easier to access the menubar
;;(run-with-idle-timer 5 nil 'html-imenu-update-menubar (current-buffer))
))
(defun html-imenu-update-menubar (buffer)
(condition-case err
(html-imenu-update-menubar-1 buffer)
(error (message "html-imenu-update-menubar error: %s" err))))
(defun html-imenu-update-menubar-1 (buffer)
(with-current-buffer buffer
(message "HTML Imenu: update menubar...")
(imenu-update-menubar)
(message "")))
(provide 'html-imenu)
;;; html-imenu ends here
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