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366 lines
13 KiB
EmacsLisp
366 lines
13 KiB
EmacsLisp
;;; org-habit.el --- The habit tracking code for Org-mode
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;; Copyright (C) 2009
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;; Free Software Foundation, Inc.
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;; Author: John Wiegley <johnw at gnu dot org>
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;; Keywords: outlines, hypermedia, calendar, wp
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;; Homepage: http://orgmode.org
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;; Version: 6.31trans
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;;
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;; This file is part of GNU Emacs.
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;;
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;;; Commentary:
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;; This file contains the habit tracking code for Org-mode
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(require 'org)
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(require 'org-agenda)
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(eval-when-compile
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(require 'cl)
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(require 'calendar))
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(defgroup org-habit nil
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"Options concerning habit tracking in Org-mode."
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:tag "Org Habit"
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:group 'org-progress)
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(defcustom org-habit-graph-column 40
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"The absolute column at which to insert habit consistency graphs.
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Note that consistency graphs will overwrite anything else in the buffer."
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:group 'org-habit
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:type 'integer)
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(defcustom org-habit-preceding-days 21
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"Number of days before today to appear in consistency graphs."
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:group 'org-habit
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:type 'integer)
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(defcustom org-habit-following-days 7
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"Number of days after today to appear in consistency graphs."
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:group 'org-habit
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:type 'integer)
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(defcustom org-habit-show-habits t
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"If non-nil, show habits in agenda buffers."
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:group 'org-habit
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:type 'boolean)
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(defcustom org-habit-show-habits-only-for-today t
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"If non-nil, only show habits on today's agenda, and not for future days.
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Note that even when shown for future days, the graph is always
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relative to the current effective time."
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:group 'org-habit
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:type 'boolean)
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(defface org-habit-clear-face
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'((((background light)) (:background "slateblue"))
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(((background dark)) (:background "blue")))
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"Face for days on which a task shouldn't be done yet."
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:group 'org-habit
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:group 'org-faces)
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(defface org-habit-clear-future-face
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'((((background light)) (:background "powderblue"))
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(((background dark)) (:background "midnightblue")))
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"Face for future days on which a task shouldn't be done yet."
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:group 'org-habit
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:group 'org-faces)
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(defface org-habit-ready-face
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'((((background light)) (:background "green"))
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(((background dark)) (:background "forestgreen")))
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"Face for days on which a task should start to be done."
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:group 'org-habit
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:group 'org-faces)
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(defface org-habit-ready-future-face
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'((((background light)) (:background "palegreen"))
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(((background dark)) (:background "darkgreen")))
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"Face for days on which a task should start to be done."
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:group 'org-habit
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:group 'org-faces)
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(defface org-habit-warning-face
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'((((background light)) (:background "yellow"))
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(((background dark)) (:background "gold")))
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"Face for days on which a task ought to be done."
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:group 'org-habit
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:group 'org-faces)
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(defface org-habit-warning-future-face
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'((((background light)) (:background "palegoldenrod"))
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(((background dark)) (:background "darkgoldenrod")))
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"Face for days on which a task ought be done."
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:group 'org-habit
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:group 'org-faces)
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(defface org-habit-alert-face
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'((((background light)) (:background "yellow"))
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(((background dark)) (:background "gold")))
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"Face for days on which a task is due."
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:group 'org-habit
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:group 'org-faces)
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(defface org-habit-alert-future-face
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'((((background light)) (:background "palegoldenrod"))
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(((background dark)) (:background "darkgoldenrod")))
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"Face for days on which a task is due."
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:group 'org-habit
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:group 'org-faces)
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(defface org-habit-overdue-face
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'((((background light)) (:background "red"))
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(((background dark)) (:background "firebrick")))
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"Face for days on which a task is overdue."
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:group 'org-habit
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:group 'org-faces)
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(defface org-habit-overdue-future-face
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'((((background light)) (:background "mistyrose"))
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(((background dark)) (:background "darkred")))
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"Face for days on which a task is overdue."
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:group 'org-habit
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:group 'org-faces)
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(defun org-habit-duration-to-days (ts)
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(if (string-match "\\([0-9]+\\)\\([dwmy]\\)" ts)
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;; lead time is specified.
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(floor (* (string-to-number (match-string 1 ts))
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(cdr (assoc (match-string 2 ts)
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'(("d" . 1) ("w" . 7)
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("m" . 30.4) ("y" . 365.25))))))
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(error "Invalid duration string: %s" ts)))
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(defun org-is-habit-p (&optional pom)
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(string= "habit" (org-entry-get (or pom (point)) "STYLE")))
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(defun org-habit-parse-todo (&optional pom)
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"Parse the TODO surrounding point for its habit-related data.
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Returns a list with the following elements:
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0: Scheduled date for the habit (may be in the past)
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1: \".+\"-style repeater for the schedule, in days
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2: Optional deadline (nil if not present)
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3: If deadline, the repeater for the deadline, otherwise nil
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4: A list of all the past dates this todo was mark closed
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This list represents a \"habit\" for the rest of this module."
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(save-excursion
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(if pom (goto-char pom))
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(assert (org-is-habit-p (point)))
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(let* ((scheduled (org-get-scheduled-time (point)))
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(scheduled-repeat (org-get-repeat org-scheduled-string))
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(sr-days (org-habit-duration-to-days scheduled-repeat))
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(end (org-entry-end-position))
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closed-dates deadline dr-days)
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(unless scheduled
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(error "Habit has no scheduled date"))
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(unless scheduled-repeat
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(error "Habit has no scheduled repeat period"))
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(unless (> sr-days 0)
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(error "Habit's scheduled repeat period is less than 1d"))
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(when (string-match "/\\([0-9]+[dwmy]\\)" scheduled-repeat)
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(setq dr-days (org-habit-duration-to-days
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(match-string-no-properties 1 scheduled-repeat)))
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(if (<= dr-days sr-days)
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(error "Habit's deadline repeat period is less than or equal to scheduled"))
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(setq deadline (time-add scheduled
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(days-to-time (- dr-days sr-days)))))
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(org-back-to-heading t)
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(while (re-search-forward "- State \"DONE\".*\\[\\([^]]+\\)\\]" end t)
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(push (org-time-string-to-time (match-string-no-properties 1))
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closed-dates))
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(list scheduled sr-days deadline dr-days closed-dates))))
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(defsubst org-habit-scheduled (habit)
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(nth 0 habit))
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(defsubst org-habit-scheduled-repeat (habit)
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(nth 1 habit))
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(defsubst org-habit-deadline (habit)
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(nth 2 habit))
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(defsubst org-habit-deadline-repeat (habit)
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(nth 3 habit))
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(defsubst org-habit-done-dates (habit)
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(nth 4 habit))
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(defsubst org-habit-get-priority (habit)
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"Determine the relative priority of a habit.
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This must take into account not just urgency, but consistency as well."
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(let ((pri 1000)
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(days (time-to-days
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(time-subtract (current-time)
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(list 0 (* 3600 org-extend-today-until) 0))))
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(s-days (time-to-days (org-habit-scheduled habit)))
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(d-days (time-to-days (org-habit-deadline habit))))
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;; add 10 for every day past the scheduled date, and subtract for every
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;; day before it
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(let ((slip (- days s-days)))
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(if (> slip 0)
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(setq pri (+ pri (* slip 10)))
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(setq pri (+ pri (* slip 10)))))
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;; add 20 for every day beyond the deadline date, and subtract 5 for every
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;; day before it
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(if (/= s-days d-days)
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;; add 100 if the deadline is today
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(if (= days d-days)
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(setq pri (+ pri 100))))
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(let ((slip (- days d-days)))
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(if (> slip 0)
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(setq pri (+ pri (* slip 20)))
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(setq pri (+ pri (* slip 5)))))
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pri))
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(defun org-habit-get-faces (habit &optional moment scheduled-time donep)
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"Return faces for HABIT relative to MOMENT and SCHEDULED-TIME.
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MOMENT defaults to the current time if it is nil.
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SCHEDULED-TIME defaults to the habit's actual scheduled time if nil.
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Habits are assigned colors on the following basis:
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Blue Task is before the scheduled date.
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Green Task is on or after scheduled date, but before the
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end of the schedule's repeat period.
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Yellow If the task has a deadline, then it is after schedule's
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repeat period, but before the deadline.
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Orange The task has reached the deadline day, or if there is
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no deadline, the end of the schedule's repeat period.
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Red The task has gone beyond the deadline day or the
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schedule's repeat period."
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(unless moment (setq moment (current-time)))
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(let* ((scheduled (or scheduled-time (org-habit-scheduled habit)))
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(s-repeat (org-habit-scheduled-repeat habit))
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(scheduled-end (time-add scheduled (days-to-time (1- s-repeat))))
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(d-repeat (org-habit-deadline-repeat habit))
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(deadline (if (and scheduled-time d-repeat)
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(time-add scheduled-time
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(days-to-time (- d-repeat s-repeat)))
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(org-habit-deadline habit)))
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(m-days (time-to-days moment))
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(s-days (time-to-days scheduled))
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(s-end-days (time-to-days scheduled-end))
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(d-days (and deadline (time-to-days deadline))))
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(cond
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((< m-days s-days)
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'(org-habit-clear-face . org-habit-clear-future-face))
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((or (< m-days s-end-days)
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(and deadline (< m-days d-days)))
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'(org-habit-ready-face . org-habit-ready-future-face))
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((and deadline (< m-days d-days))
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(if donep
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'(org-habit-ready-face . org-habit-ready-future-face)
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'(org-habit-warning-face . org-habit-warning-future-face)))
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((= m-days (if deadline
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d-days
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s-end-days))
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(if donep
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'(org-habit-ready-face . org-habit-ready-future-face)
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'(org-habit-alert-face . org-habit-alert-future-face)))
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(t
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'(org-habit-overdue-face . org-habit-overdue-future-face)))))
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(defun org-habit-build-graph (habit &optional starting current ending)
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"Build a color graph for the given HABIT, from STARTING to ENDING."
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(let ((done-dates (sort (org-habit-done-dates habit) 'time-less-p))
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(scheduled (org-habit-scheduled habit))
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(s-repeat (org-habit-scheduled-repeat habit))
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(day starting)
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(current-days (time-to-days current))
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last-done-date
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(graph (make-string (1+ (- (time-to-days ending)
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(time-to-days starting))) ?\ ))
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(index 0))
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(if done-dates
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(while (time-less-p (car done-dates) starting)
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(setq last-done-date (car done-dates)
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done-dates (cdr done-dates))))
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(while (time-less-p day ending)
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(let* ((now-days (time-to-days day))
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(in-the-past-p (< now-days current-days))
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(todayp (= now-days current-days))
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(donep (and done-dates
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(= now-days (time-to-days (car done-dates)))))
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(faces (if (and in-the-past-p
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(not last-done-date)
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(not (time-less-p scheduled current)))
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'(org-habit-clear-face . org-habit-clear-future-face)
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(org-habit-get-faces
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habit day (and in-the-past-p
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(if last-done-date
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(time-add last-done-date
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(days-to-time s-repeat))
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scheduled))
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donep)))
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markedp face)
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(if donep
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(progn
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(aset graph index ?*)
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(setq markedp t)
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(while (and done-dates
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(= now-days (time-to-days (car done-dates))))
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(setq last-done-date (car done-dates)
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done-dates (cdr done-dates))))
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(if todayp
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(aset graph index ?!)))
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(setq face (if (or in-the-past-p
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todayp)
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(car faces)
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(cdr faces)))
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(if (and in-the-past-p
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(not (eq face 'org-habit-overdue-face))
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(not markedp))
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(setq face (cdr faces)))
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(put-text-property index (1+ index) 'face face graph))
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(setq day (time-add day (days-to-time 1))
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index (1+ index)))
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graph))
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(defun org-habit-insert-consistency-graphs (&optional line)
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"Insert consistency graph for any habitual tasks."
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(let ((inhibit-read-only t) l c
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(moment (time-subtract (current-time)
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(list 0 (* 3600 org-extend-today-until) 0))))
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(save-excursion
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(goto-char (if line (point-at-bol) (point-min)))
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(while (not (eobp))
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(let ((habit (get-text-property (point) 'org-habit-p)))
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(when habit
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(move-to-column org-habit-graph-column t)
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(delete-char (min (+ 1 org-habit-preceding-days
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org-habit-following-days)
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(- (line-end-position) (point))))
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(insert (org-habit-build-graph
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habit
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(time-subtract moment
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(days-to-time org-habit-preceding-days))
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moment
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(time-add moment
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(days-to-time org-habit-following-days))))))
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(forward-line)))))
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(defun org-habit-toggle-habits ()
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"Toggle display of habits in an agenda buffer."
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(interactive)
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(org-agenda-check-type t 'agenda)
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(setq org-habit-show-habits (not org-habit-show-habits))
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(org-agenda-redo)
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(org-agenda-set-mode-name)
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(message "Habits turned %s"
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(if org-habit-show-habits "on" "off")))
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(org-defkey org-agenda-mode-map "K" 'org-habit-toggle-habits)
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(provide 'org-habit)
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;; arch-tag:
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;;; org-habit.el ends here
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