How to add row to Tree? (Noob)

[kherge]

I'm a beginner at developing Firefox extensions (2.0+).

I'm looked through the MDC Wiki and XulPlanet but I cannot find any
clear method of adding rows to an existing tree.

How would I accomplish this?

[Igor Tandetnik]

kherge <khe...@gmail.com> wrote:
> I'm looked through the MDC Wiki and XulPlanet but I cannot find any
> clear method of adding rows to an existing tree.

What is the tree backed by - explicit <treeitem> elements, RDF dataset,
or custom nsITreeView implementation? In the first case, you simply
insert more <treeitem> elements into the DOM (see e.g. appendChild). In
the second, you need to update the underlying RDF dataset, and rebuild.
In the third, you call nsITreeBoxObject::rowCountChanged on the tree's
box object, and it will turn around and query your nsITreeView
implementation for information about new rows.

Igor Tandetnik

[Neil]

Igor Tandetnik wrote:

>In the second, you need to update the underlying RDF dataset, and rebuild.
>

Assuming a correctly implemented RDF data source, it will automatically
notify the tree of the updates.

--
Warning: May contain traces of nuts.

[Neil]

Neil wrote:

> Igor Tandetnik wrote:
>
>> In the second, you need to update the underlying RDF dataset, and
>> rebuild.
>
> Assuming a correctly implemented RDF data source, it will
> automatically notify the tree of the updates.

Ah, maybe you're thinking of the case where you update the source XML
and refresh the RDF, which does need a rebuild.