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org-depend.el: Set a tag when a state change is blocked. 

So far there was no visible indication when a state change was blocked
by a dependence on another task.  Now the tag "blocked" will be set.
This commit is contained in:
Carsten Dominik 2009-01-17 08:58:11 +01:00
parent 3430fe4261
commit a4244d5783
2 changed files with 58 additions and 42 deletions
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6
contrib/ChangeLog
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@ -1,3 +1,9 @@
2009-01-16 Carsten Dominik <carsten.dominik@gmail.com>
* lisp/org-depend.el (org-depend-block-todo): Set a tag when a
state change is blocked.
(org-depend-tag-blocked): New option.
2009-01-03 Carsten Dominik <carsten.dominik@gmail.com>
* lisp/org-mtags.el (org-mtags-replace): Extend muse tags syntax

94
contrib/lisp/org-depend.el
View File

@ -4,7 +4,7 @@
;; Author: Carsten Dominik <carsten at orgmode dot org>
;; Keywords: outlines, hypermedia, calendar, wp
;; Homepage: http://orgmode.org
;; Version: 0.07
;; Version: 0.08
;;
;; This file is not part of GNU Emacs.
;;
@ -113,6 +113,11 @@
(require 'org)
(defcustom org-depend-tag-blocked t
"Whether to indicate blocked TODO items by a special tag."
:group 'org
:type 'boolean)
(defun org-depend-trigger-todo (change-plist)
"Trigger new TODO entries after the current is switched to DONE.
This does two different kinds of triggers:
@ -191,49 +196,54 @@ this ID property, that entry is also checked."
(from (plist-get change-plist :from))
(to (plist-get change-plist :to))
(org-log-done nil) ; IMPROTANT!: no logging during automatic trigger
blocker blockers bl p1)
(catch 'return
(unless (eq type 'todo-state-change)
;; We are not handling this kind of change
(throw 'return t))
(unless (and (not from) (member to org-not-done-keywords))
;; This is not a change from nothing to TODO, ignore it
(throw 'return t))
blocker blockers bl p1
(proceed-p
(catch 'return
(unless (eq type 'todo-state-change)
;; We are not handling this kind of change
(throw 'return t))
(unless (and (not from) (member to org-not-done-keywords))
;; This is not a change from nothing to TODO, ignore it
(throw 'return t))
;; OK, the plan is to switch from nothing to TODO
;; Lets see if we will allow it. Find the BLOCKER property
;; and split it on whitespace.
(setq blocker (org-entry-get pos "BLOCKER")
blockers (and blocker (org-split-string blocker "[ \t]+")))
;; OK, the plan is to switch from nothing to TODO
;; Lets see if we will allow it. Find the BLOCKER property
;; and split it on whitespace.
(setq blocker (org-entry-get pos "BLOCKER")
blockers (and blocker (org-split-string blocker "[ \t]+")))
;; go through all the blockers
(while (setq bl (pop blockers))
(cond
((equal bl "previous-sibling")
;; the sibling is required to be DONE.
(catch 'ignore
(save-excursion
(goto-char pos)
;; find the older sibling, exit if no more siblings
(condition-case nil
(outline-backward-same-level 1)
(error (throw 'ignore t)))
;; Check if this entry is not yet done and block
(unless (org-entry-is-done-p)
;; return nil, to indicate that we block the change!
(org-mark-ring-push)
(throw 'return nil)))))
;; go through all the blockers
(while (setq bl (pop blockers))
(cond
((equal bl "previous-sibling")
;; the sibling is required to be DONE.
(catch 'ignore
(save-excursion
(goto-char pos)
;; find the older sibling, exit if no more siblings
(condition-case nil
(outline-backward-same-level 1)
(error (throw 'ignore t)))
;; Check if this entry is not yet done and block
(unless (org-entry-is-done-p)
;; return nil, to indicate that we block the change!
(org-mark-ring-push)
(throw 'return nil)))))
((setq p1 (org-find-entry-with-id bl))
;; there is an entry with this ID, check it out
(save-excursion
(goto-char p1)
(unless (org-entry-is-done-p)
;; return nil, to indicate that we block the change!
(org-mark-ring-push)
(throw 'return nil))))))
t ; return t to indicate that we are not blocking
)))
((setq p1 (org-find-entry-with-id bl))
;; there is an entry with this ID, check it out
(save-excursion
(goto-char p1)
(unless (org-entry-is-done-p)
;; return nil, to indicate that we block the change!
(org-mark-ring-push)
(throw 'return nil))))))
t ; return t to indicate that we are not blocking
)))
(when org-depend-tag-blocked
(org-toggle-tag "blocked" (if proceed-p 'off 'on)))
proceed-p))
(add-hook 'org-trigger-hook 'org-depend-trigger-todo)
(add-hook 'org-blocker-hook 'org-depend-block-todo)