lisp/org-jsinfo.el

   1 ;;; org-jsinfo.el --- Support for org-info.js Javascript in Org HTML export
   2
   3 ;; Copyright (C) 2004-2012 Free Software Foundation, Inc.
   4
   5 ;; Author: Carsten Dominik <carsten at orgmode dot org>
   6 ;; Keywords: outlines, hypermedia, calendar, wp
   7 ;; Homepage: http://orgmode.org
   8 ;;
   9 ;; This file is part of GNU Emacs.
  10 ;;
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  24 ;;
  25 ;;; Commentary:
  26
  27 ;; This file implements the support for Sebastian Rose's JavaScript
  28 ;; org-info.js to display an org-mode file exported to HTML in an
  29 ;; Info-like way, or using folding similar to the outline structure
  30 ;; org org-mode itself.
  31
  32 ;; Documentation for using this module is in the Org manual.  The script
  33 ;; itself is documented by Sebastian Rose in a file distributed with
  34 ;; the script.  FIXME: Accurate pointers!
  35
  36 ;; Org-mode loads this module by default - if this is not what you want,
  37 ;; configure the variable `org-modules'.
  38
  39 ;;; Code:
  40
  41 (require 'org-exp)
  42 (require 'org-html)
  43
  44 (add-to-list 'org-export-inbuffer-options-extra '("INFOJS_OPT" :infojs-opt))
  45 (add-hook 'org-export-options-filters 'org-infojs-handle-options)
  46
  47 (defgroup org-infojs nil
  48   "Options specific for using org-info.js in HTML export of Org-mode files."
  49   :tag "Org Export HTML INFOJS"
  50   :group 'org-export-html)
  51
  52 (defcustom org-export-html-use-infojs 'when-configured
  53   "Should Sebastian Rose's Java Script org-info.js be linked into HTML files?
  54 This option can be nil or t to never or always use the script.  It can
  55 also be the symbol `when-configured', meaning that the script will be
  56 linked into the export file if and only if there is a \"#+INFOJS_OPT:\"
  57 line in the buffer.  See also the variable `org-infojs-options'."
  58   :group 'org-export-html
  59   :group 'org-infojs
  60   :type '(choice
  61           (const :tag "Never" nil)
  62           (const :tag "When configured in buffer" when-configured)
  63           (const :tag "Always" t)))
  64
  65 (defconst org-infojs-opts-table
  66   '((path PATH "http://orgmode.org/org-info.js")
  67     (view VIEW "info")
  68     (toc TOC :table-of-contents)
  69     (ftoc FIXED_TOC "0")
  70     (tdepth TOC_DEPTH "max")
  71     (sdepth SECTION_DEPTH "max")
  72     (mouse MOUSE_HINT "underline")
  73     (buttons VIEW_BUTTONS "0")
  74     (ltoc LOCAL_TOC "1")
  75     (up LINK_UP :link-up)
  76     (home LINK_HOME :link-home))
  77   "JavaScript options, long form for script, default values.")
  78
  79 (defvar org-infojs-options)
  80 (when (and (boundp 'org-infojs-options)
  81            (assq 'runs org-infojs-options))
  82   (setq org-infojs-options (delq (assq 'runs org-infojs-options)
  83                                  org-infojs-options)))
  84
  85 (defcustom org-infojs-options
  86   (mapcar (lambda (x) (cons (car x) (nth 2 x)))
  87           org-infojs-opts-table)
  88   "Options settings for the INFOJS JavaScript.
  89 Each of the options must have an entry in `org-export-html/infojs-opts-table'.
  90 The value can either be a string that will be passed to the script, or
  91 a property.  This property is then assumed to be a property that is defined
  92 by the Export/Publishing setup of Org.
  93 The `sdepth' and `tdepth' parameters can also be set to \"max\", which
  94 means to use the maximum value consistent with other options."
  95   :group 'org-infojs
  96   :type
  97   `(set :greedy t :inline t
  98         ,@(mapcar
  99            (lambda (x)
 100              (list 'cons (list 'const (car x))
 101                    '(choice
 102                             (symbol :tag "Publishing/Export property")
 103                             (string :tag "Value"))))
 104            org-infojs-opts-table)))
 105
 106 (defcustom org-infojs-template
 107   "<script type=\"text/javascript\" src=\"%SCRIPT_PATH\"></script>
 108 <script type=\"text/javascript\" >
 109 <!--/*--><![CDATA[/*><!--*/
 110 %MANAGER_OPTIONS
 111 org_html_manager.setup();  // activate after the parameters are set
 112 /*]]>*///-->
 113 </script>"
 114   "The template for the export style additions when org-info.js is used.
 115 Option settings will replace the %MANAGER-OPTIONS cookie."
 116   :group 'org-infojs
 117   :type 'string)
 118
 119 (defun org-infojs-handle-options (exp-plist)
 120   "Analyze JavaScript options in INFO-PLIST and modify EXP-PLIST accordingly."
 121   (if (or (not org-export-html-use-infojs)
 122           (and (eq org-export-html-use-infojs 'when-configured)
 123                (or (not (plist-get exp-plist :infojs-opt))
 124                    (string-match "\\<view:nil\\>"
 125                                  (plist-get exp-plist :infojs-opt)))))
 126       ;; We do not want to use the script
 127       exp-plist
 128     ;; We do want to use the script, set it up
 129     (let ((template org-infojs-template)
 130         (ptoc (plist-get exp-plist :table-of-contents))
 131         (hlevels (plist-get exp-plist :headline-levels))
 132         tdepth sdepth s v e opt var val table default)
 133     (setq sdepth hlevels
 134           tdepth hlevels)
 135     (if (integerp ptoc) (setq tdepth (min ptoc tdepth)))
 136     (setq v (plist-get exp-plist :infojs-opt)
 137           table org-infojs-opts-table)
 138     (while (setq e (pop table))
 139       (setq opt (car e) var (nth 1 e)
 140             default (cdr (assoc opt org-infojs-options)))
 141       (and (symbolp default) (not (memq default '(t nil)))
 142            (setq default (plist-get exp-plist default)))
 143       (if (and v (string-match (format " %s:\\(\\S-+\\)" opt) v))
 144           (setq val (match-string 1 v))
 145         (setq val default))
 146       (cond
 147        ((eq opt 'path)
 148         (and (string-match "%SCRIPT_PATH" template)
 149              (setq template (replace-match val t t template))))
 150        ((eq opt 'sdepth)
 151         (if (integerp (read val))
 152             (setq sdepth (min (read val) hlevels))))
 153        ((eq opt 'tdepth)
 154         (if (integerp (read val))
 155             (setq tdepth (min (read val) hlevels))))
 156        (t
 157         (setq val
 158               (cond
 159                ((or (eq val t) (equal val "t")) "1")
 160                ((or (eq val nil) (equal val "nil")) "0")
 161                ((stringp val) val)
 162                (t (format "%s" val))))
 163         (push (cons var val) s))))
 164
 165     ;; Now we set the depth of the *generated* TOC to SDEPTH, because the
 166     ;; toc will actually determine the splitting.  How much of the toc will
 167     ;; actually be displayed is governed by the TDEPTH option.
 168     (setq exp-plist (plist-put exp-plist :table-of-contents sdepth))
 169
 170     ;; The table of contents should not show more sections then we generate
 171     (setq tdepth (min tdepth sdepth))
 172     (push (cons "TOC_DEPTH" tdepth) s)
 173
 174     (setq s (mapconcat
 175              (lambda (x) (format "org_html_manager.set(\"%s\", \"%s\");"
 176                                  (car x) (cdr x)))
 177              s "\n"))
 178     (when (and s (> (length s) 0))
 179       (and (string-match "%MANAGER_OPTIONS" template)
 180            (setq s (replace-match s t t template))
 181            (setq exp-plist
 182                  (plist-put
 183                   exp-plist :style-extra
 184                   (concat (or (plist-get exp-plist :style-extra) "") "\n" s)))))
 185     ;; This script absolutely needs the table of contents, to we change that
 186     ;; setting
 187     (if (not (plist-get exp-plist :table-of-contents))
 188         (setq exp-plist (plist-put exp-plist :table-of-contents t)))
 189     ;; Return the modified property list
 190     exp-plist)))
 191
 192 (defun org-infojs-options-inbuffer-template ()
 193   (format "#+INFOJS_OPT: view:%s toc:%s ltoc:%s mouse:%s buttons:%s path:%s"
 194           (if (eq t org-export-html-use-infojs) (cdr (assoc 'view org-infojs-options)) nil)
 195           (let ((a (cdr (assoc 'toc org-infojs-options))))
 196             (cond ((memq a '(nil t)) a)
 197                   (t (plist-get (org-infile-export-plist) :table-of-contents))))
 198           (if (equal (cdr (assoc 'ltoc org-infojs-options)) "1") t nil)
 199           (cdr (assoc 'mouse org-infojs-options))
 200           (cdr (assoc 'buttons org-infojs-options))
 201           (cdr (assoc 'path org-infojs-options))))
 202
 203 (provide 'org-infojs)
 204 (provide 'org-jsinfo)
 205
 206 ;;; org-jsinfo.el ends here