;;; kanban.el --- Parse org-todo headlines to use org-tables as Kanban tables
;;--------------------------------------------------------------------
;;
;; Copyright (C) 2012--2013 Arne Babenhauserheide <arne_bab@web.de>
;; Version: 0.1.1
;; Author: Arne Babenhauserheide <arne_bab@web.de>
;; Keywords: outlines, convenience
;; This file is NOT part of 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 2 of
;; the License, 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 this program; if not, write to the Free
;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
;; MA 02111-1307 USA
;;
;;; Commentary:
;; To use, save kanban.el to a directory in your load-path.
;;
;; (require 'kanban)
;;
;; Usage:
;;
;; * Zero state Kanban: Directly displaying org-mode todo states as kanban board
;;
;; Use the functions kanban-headers and kanban-zero in TBLFM lines to
;; get your org-mode todo states as kanban table. Update with C-c C-c
;; on the TBLFM line.
;;
;; Example:
;;
;; | | | |
;; |---+---+---|
;; | | | |
;; | | | |
;; #+TBLFM: @1='(kanban-headers $#)::@2$1..@>$>='(kanban-zero $# @# "TAG" '(list-of-files))
;; "TAG" and the list of files are optional
;;
;; * Stateful Kanban: Use org-mode to retrieve tasks, but track their state in the Kanban board
;;
;; | | | |
;; |---+---+---|
;; | | | |
;; | | | |
;; #+TBLFM: @1='(kanban-headers $#)::@2$1..@>$1='(kanban-todo @# @2$2..@>$> "TAG" '(list-of-files))
;; "TAG" and the list of files are optional
;;
;; TODO: The links don’t yet work for tagged entries. Fix that. There
;; has to be some org-mode function to retrieve the plain header.
;;
;; TODO: Headings containing links are broken. Badly.
;;
;;; Code:
(defun kanban-headers (column)
"Fill the headers of your table with your org-mode TODO
states. If the table is too narrow, the only the first n TODO
states will be shown, with n as the number of columns in your
table."
(let ((words org-todo-keywords-1))
(nth (- column 1) words)))
(defun kanban-zero (column row &optional match scope)
"Zero-state Kanban board: This Kanban board just displays all
org-mode headers which have a TODO state in their respective TODO
state. Useful for getting a simple overview of your tasks."
(let
((elem (nth (- column 2)
(delete nil (org-map-entries
(lambda ()
(let ((file (buffer-file-name))
(line (filter-buffer-substring
(point) (line-end-position)))
(keyword (nth (- row 1) org-todo-keywords-1)))
(if file
(setq file (concat file "::")))
(let ((cleanline (nth 1 (split-string line "* "))))
(concat "[[" file cleanline "]["
(substring cleanline
(+ (length keyword) 1)
(min 30 (length cleanline))) "]]" ))))
; select the TODO state via the matcher: just match the TODO.
(if match
(concat match "+TODO=\"" (nth (- row 1) org-todo-keywords-1) "\"")
(concat "+TODO=\"" (nth (- row 1) org-todo-keywords-1) "\""))
; read all agenda files
(if scope scope 'agenda))))))
(if
(equal
elem nil) "" elem)))
(defun kanban-todo (column cels &optional match scope)
"Kanban TODO item grabber. Fills the first row of the kanban
table with org-mode TODO entries, if they are not in another cell
of the table. This allows you to set the state manually and just
use org-mode to supply new TODO entries."
(let ((elem (nth (- column 2) (delete nil
(org-map-entries
(lambda
()
(let
((file (buffer-file-name))
(line (filter-buffer-substring (point) (line-end-position)))
(keyword (nth 0 org-todo-keywords-1)))
(if file
(setq file (concat file "::")))
(let ((cleanline (nth 1 (split-string line "* "))))
(let ((shortline (substring cleanline
(+ (length keyword) 1)
(min 40 (length cleanline)))))
(let ((clean (if (member " " (split-string
(substring shortline
(min 25 (length shortline)))
""))
(mapconcat 'identity
(reverse (rest (reverse
(split-string shortline " "))))
" ") shortline)))
(concat "[[" file cleanline "][" clean "]]" ))))))
(if match
(concat match "+TODO=\"" (nth 0 org-todo-keywords-1) "\"")
(concat "+TODO=\"" (nth 0 org-todo-keywords-1) "\""))
(if scope scope 'agenda))))))
(if
(or (member elem (list cels)) (equal elem nil))
" " ; the element exists in another table or is nil: Keep the cel empty
elem))) ; otherwise use the element.
(provide 'kanban)
;;; kanban.el ends here