[mcclim-devel] is there a tree-panel available?

[Robert Goldman]

Alexander Ekart wrote:
> hi,
> is there something like a tree-panel available for use with mcclim?
> i saw that there is a class named tree-with-cross-edges in the
> experimental subfolder of the mcclim directory tree, but it doesnt seem 
> to be useful (by now).
> 
> kind regards,
> alex
> 
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> 

I don't think that's what you want.  The tree with cross-edges was
developed for graph layouts where the graph is "mostly" a tree, but with
cross-edges in some places.  More precisely, it was developed for HTN
plans, if that helps --- these are task decomposition trees (top level
task is most abstract, lower levels are increasingly concrete) which
have cross edges for temporal constraints.  So you get things like

A decomposes into (has for children) B and C.

There is an additional edge from B to C to indicate that B must be
performed before C.

If you are looking for something like that standard "tree of folders"
widget that is so common in modern UIs, tree-with-cross-edges is not it.

You are right, BTW, that the t-w-c-e has not been maintained (at least
not by me).

best,
r