From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bernt Hansen <bernt@norang.ca>
Subject: Re: Push a dependent TODO item on top of a depending one
Date: Tue, 06 Mar 2012 07:17:50 -0500
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	(Alan E. Davis's message of "Mon, 5 Mar 2012 22:42:05 -0800")
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To: "Alan E. Davis" <lngndvs@gmail.com>
Cc: org-mode <emacs-orgmode@gnu.org>

"Alan E. Davis" <lngndvs@gmail.com> writes:

> It just occurred to me to try to implement a method of pushing a TODO
> item on top of another, in the manner of a Stack. =C2=A0The item on top of
> the stack is a task upon which performance of some other task
> depends.=C2=A0
>
>
> I need to call someone, so I have a task that appears on my agenda,
> to call him. =C2=A0However, =C2=A0I have just discovered that the phone n=
umber
> I have for this person is not working. =C2=A0I new need to find his phone
> number, so I can write a new TODO task. =C2=A0It would be fantastic to be
> able to push a TODO on top of the dependant TODO, the task that is
> held up until one finds the phone number. =C2=A0=C2=A0
>
> Once =C2=A0I have found the number, and "pop" the number finding task off
> the agenda, the dependant task would appear as a high priority,
> active task. =C2=A0 rendering the TODO to CALL invisible, perhaps as a
> subtask, =C2=A0
>
> I think there are many ways to do this. =C2=A0=C2=A0Is it a nightmare to
> implement in the fashion I have suggested? =C2=A0 Is it already easy to
> do? =C2=A0The crux of the matter is a dependent TODO is rendered invisible
> until some subtask TODO is completed.
>
> Thank you for all the ideas,

Can't you just create the new todo item when on column 1 of the
dependent task - so it gets inserted before it?

* TODO Some Project
  :PROPERTIES:
  :ORDERED: t
  :END:
** TODO Dependent Task
^
|
point here

Then C-S-TAB or M-S-TAN creates the new task before this one

* TODO Some Project
  :PROPERTIES:
  :ORDERED: t
  :END:
** TODO New Task
** TODO Dependent Task

Combined with the ORDERED property and the variable
org-agenda-dim-blocked-tasks set to 'invisible it might get you a long
way towards what you are trying to achieve.

HTH,
Bernt