Re: Automatic tagging based on # of todo items as children

From: Carsten Dominik <carsten.dominik@gmail.com>
To: mrb@hsdev.com
Cc: emacs-orgmode@gnu.org
Subject: Re: Automatic tagging based on # of todo items as children
Date: Tue, 16 Feb 2010 05:53:23 +0100	[thread overview]
Message-ID: <9F69ED3D-EF2E-4166-91D4-A2A102479268@gmail.com> (raw)
In-Reply-To: <20100215120548.6ef57e56@hsdev.com>

Hi Marcel,

there is not simple other way, because only when making TODO  
statistics are the TODO children counted.  You can hook into `org- 
after-todo-state-change-hook' with a function that moves back up to  
the parent and then counts children with TODO keyword.

THis is untested:

(defun my-define-prj ()
   (save-excursion
     (when (org-up-heading-safe)
       (let ((beg (point))
	    (end (org-end-of-subtree t t))
	    two-not-done)
	(goto-char beg)
	(goto-char (point-at-eol))
	(setq two-not-done
	      (and (re-search-forward org-not-done-heading-regexp end t)
		   (re-search-forward org-not-done-heading-regexp end t)))
	(goto-char beg)
	(org-toggle-tag "prj" (if two-not-done 'on 'off))))))

(add-hook 'org-after-todo-state-change-hook 'my-define-prj)

- Carsten

On Feb 15, 2010, at 12:05 PM, mrb@hsdev.com wrote:

> Hi,
>
> I would like to have org-mode assist me in tagging headlines with a
> 'prj' tag if that headline contains more than one todo item. It does
> not matter if the items are completed or not, if it has more than one
> task as its children, I would like to have it tagged with 'prj'
>
> I came up with this:
>
> #+begin_src elisp
> (defun ensure-prj-tag()
>  "Ensure a header gets a prj tag"
>  (interactive)
>  (org-toggle-tag "prj"
>    (if (> (length (org-map-entries t "/+TODO|DONE|CANCELLED" 'tree))1)
> 'on 'off)) )
> #+end_src
>
> which sort-of works if the cursor is on the heading.
>
> I need some help with the following:
> - I would like it to be automatic and the org-todo-statistics hook
>  seem candidates to attach a function to, but I also want it for
>  heading which do not have a [1/N] or [%] counter. How to proceed?
> - Can I do this automatically on a whole file?
>
> marcel
>
> -- 
> Marcel van der Boom  -- http://hsdev.com/mvdb.vcf
> HS-Development BV    -- http://www.hsdev.com
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- Carsten