Re: MY window tree!

[Lennart Borgman (gmail)]

Michaël Cadilhac wrote:
> "Lennart Borgman (gmail)" <lennart.borgman@gmail.com> writes:
>
> > Michaël Cadilhac wrote:
> > > Hi!
> > >
> > > I've been playing around with window-tree to do the following :
> > > - On M-x foo, a window is created on the extreme left of the frame,
> > > containing a buffer called *Bar*,
> > > - On M-x foo again, with the buffer *Bar* on the left, this window is
> > > removed.
> > >
> > > Problem is, this can't be done with a simple split. So my first idea
> > > was to reduce the frame to one window, split it: left would be *Bar*
> > > and restore the window-tree in the right part.
> > >
> > > Of course, this can't work, because if I use delete-other-windows, the
> > > windows are ... deleted. So, can't be restored.
> > >
> > > I can't find a way to do this simply, and I wonder if there is :-)
> > >
> > > How would you do?
> > Using something like
> >
> >    (window-buffer (nth 2 (car (window-tree))))
> >
> > perhaps?
>
> Yeah, that's what I'm thinking about when I talk about « not
> simple ways » :-)
>
> This implies to parse the window-tree, and for each leaves of the
> tree, which is a window, get its buffer and its size; then store it in
> another tree to restore it.
>
> Damn, I just want to create another root, this can't be that complex,
> is it ?
>
> Thanks for you advice, however :-)


A little bit more simple way out might be to look for the uppermost left 
window and see if that is *Bar*.