[Zope] newbie tree q - how collapse and expand

[Phil Harris]

Usin tree-s/c/e is going to be a bit problematic.

In my understanding those vars are built from the context of the node in the
tree, so if you add/remove anything to/from the tree then the tree-s/c/e
will change.

There doesn't seem to be anyway of going to a particular point in a tree
with any certainty.

I did this on one site for example, it's a prospectus for a college, the
tree is built from calls to a sql database.  Adding or removing records from
this database totally changed the tree-s/c/e vars that each node is
associated with.

I hope I'm wrong about that but I have a horrible feeling that I'm right.

Please someone prove me wrong.

Phil
phil.harris@zope.co.uk

----- Original Message -----
From: "Chris Withers" <chrisw@nipltd.com>
To: "Zope Mailing List" <zope@zope.org>
Sent: Thursday, March 09, 2000 11:52 AM
Subject: Re: [Zope] newbie tree q - how collapse and expand


> expand_all and collapse_all are all very well but I think Andy is after
the same
> thing that I gave up on.
>
> How can you expand or collapse a tree to a specific point, ie:
>
> - make a particular subtree expanded
>
> - make sure a particular node in the tree in visible
>
> The Zope DTML guide mentions the tree-s, tree-e and tree-c variables but
it
> doesn't explain how to use them. I haven't found any help anywhere on
this.
>
> Any ideas?
>
> Chris
>
> Petr Knapek wrote:
> >
> > >>>>> On Thu, 9 Mar 2000 09:07:15 -0000, "Phil Harris"
<phil.harris@zope.co.uk> said:
> >
> >     PH> Andy try something like: <a
> >     PH> href="treeview?expand_all=1">expanded</a> <a
> >     PH> href="treeview?collapse_all=1">collapsed</a>
> >
> > On my Zope, (2.1.4 deb package - on Linux) only collapse_all works. In
> > the case of expand_all a key error is raised. I have reported this
> > yesterday and also Jason at the same day reported the same bug. Does
> > anybody the same problem with tree and expand_all?
> >
> >     PH> HTH
> >
> >     PH> Phil phil.harris@zope.co.uk
> >
> >     PH> ----- Original Message ----- From: "Andy Heath"
> >     PH> <a.k.heath@open.ac.uk> To: <zope@zope.org> Sent: Thursday, March
> >     PH> 09, 2000 8:38 AM Subject: [Zope] newbie tree q - how collapse
> >     PH> and expand
> >
> >     >> I'm getting better but stil learning.
> >     >>
> >     >> I want to collapse/expand a tree at will so that I can come in
> >     >> from particular hyperlinks to a known tree state.  I know there
> >     >> are two variables I can set but I don't know how to do this from
> >     >> code.
> >     >>
> >     >> For example how could I have a hyperlink whose HREF is a page
> >     >> containing a tree in such a way that when you get there the tree
> >     >> gets collapsed while another link to the same page doesn't
> >     >> collapse it.  Can someone show me some code that dows this
> >     >> please.
> >     >>
> >     >> Andy -- ------------------------------------------------- Andy
> >     >> Heath a.k.heath@open.ac.uk The Open University +44 (0) 114
> >     >> 2885738
> >
> > Petr
> >
> > --
> > Petr Knápek
> > PVT.NET, e-mail: petr.knapek@pvt.net, tel:+420-5-41 558 394
> > PVT a.s. - pvt.net, Veveří 102, 659 10 Brno, Czech Republic
> >
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