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;;; org-checklist.el --- org functions for checklist handling
;; Copyright (C) 2008-2014, 2021 James TD Smith
;; Author: James TD Smith (@ ahktenzero (. mohorovi cc))
;; Version: 1.0
;; Keywords: org, checklists
;;
;; This file is not part of GNU Emacs.
;;
;; 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 3, 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. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides some functions for handing repeated tasks which involve
;; checking off a list of items. By setting the RESET_CHECK_BOXES property in an
;; item, when the TODO state is set to done all checkboxes under that item are
;; cleared. If the LIST_EXPORT_BASENAME property is set, a file will be created
;; using the value of that property plus a timestamp, containing all the items
;; in the list which are not checked. Additionally the user will be prompted to
;; print the list.
;;
;; I use this for to keep track of stores of various things (food stores,
;; components etc) which I check periodically and use the exported list of items
;; which are not present as a shopping list.
;;
;;; Usage:
;; (require 'org-checklist)
;;
;; Set the RESET_CHECK_BOXES and LIST_EXPORT_BASENAME properties in items as
;; needed.
;;
;;; Code:
(require 'org)
(load "a2ps-print" 'no-error)
(setq org-default-properties (cons "RESET_CHECK_BOXES" (cons "LIST_EXPORT_BASENAME" org-default-properties)))
(defgroup org-checklist nil
"Extended checklist handling for org"
:tag "Org-checklist"
:group 'org)
(defcustom org-checklist-export-time-format "%Y%m%d%H%M"
"The format of timestamp appended to LIST_EXPORT_BASENAME to
make the name of the export file."
:link '(function-link format-time-string)
:group 'org-checklist
:type 'string)
(defcustom org-checklist-export-function 'org-export-as-ascii
"function used to prepare the export file for printing"
:group 'org-checklist
:type '(radio (function-item :tag "ascii text" org-export-as-ascii)
(function-item :tag "HTML" org-export-as-html)
(function-item :tag "LaTeX" :value org-export-as-latex)
(function-item :tag "XOXO" :value org-export-as-xoxo)))
(defcustom org-checklist-export-params nil
"options for the export function file for printing"
:group 'org-checklist
:type '(repeat string))
(defcustom org-checklist-a2ps-params nil
"options for a2ps for printing"
:group 'org-checklist
:type '(repeat string))
(defun org-reset-checkbox-state-maybe ()
"Reset all checkboxes in an entry if the `RESET_CHECK_BOXES' property is set"
(interactive "*")
(if (org-entry-get (point) "RESET_CHECK_BOXES")
(org-reset-checkbox-state-subtree)))
(defun org-make-checklist-export ()
"Produce a checklist containing all unchecked items from a list
of checkbox items"
(interactive "*")
(if (org-entry-get (point) "LIST_EXPORT_BASENAME")
(let* ((export-file (concat (org-entry-get (point) "LIST_EXPORT_BASENAME" nil)
"-" (format-time-string
org-checklist-export-time-format)
".org"))
(print (cl-case (org-entry-get (point) "PRINT_EXPORT" nil)
(("" "nil" nil) nil)
(nil (y-or-n-p "Print list? "))
(t t)))
exported-lines
(title "Checklist export"))
(save-restriction
(save-excursion
(org-narrow-to-subtree)
(org-update-checkbox-count-maybe)
(org-show-subtree)
(goto-char (point-min))
(when (looking-at org-complex-heading-regexp)
(setq title (match-string 4)))
(goto-char (point-min))
(let ((end (point-max)))
(while (< (point) end)
(when (and (org-at-item-checkbox-p)
(or (string= (match-string 0) "[ ]")
(string= (match-string 0) "[-]")))
(add-to-list 'exported-lines (thing-at-point 'line) t))
(beginning-of-line 2)))
(set-buffer (get-buffer-create export-file))
(org-insert-heading)
(insert (or title export-file) "\n")
(dolist (entry exported-lines) (insert entry))
(org-update-checkbox-count-maybe)
(write-file export-file)
(if (print)
(progn (funcall org-checklist-export-function
org-checklist-export-params)
(let* ((current-a2ps-switches a2ps-switches)
(a2ps-switches (append current-a2ps-switches
org-checklist-a2ps-params)))
(a2ps-buffer)))))))))
(defun org-checklist ()
(when (member org-state org-done-keywords) ;; org-state dynamically bound in org.el/org-todo
(org-make-checklist-export)
(org-reset-checkbox-state-maybe)))
(add-hook 'org-after-todo-state-change-hook 'org-checklist)
(provide 'org-checklist)
;;; org-checklist.el ends here
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