300687 - xul listbox doesnt display first cell of items after the rows setting

Status: UNCONFIRMED

(Core :: Layout, defect)

Description

[Dave Townsend [:mossop]]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b3) Gecko/20050713 Firefox/1.0+
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b3) Gecko/20050713 Firefox/1.0+

The rows attribute on a listbox sets its size. I am dynamically adding items to
the listbox after the window is displayed but for some reason the items added
with an index greater than the rows setting lose their first cell.
If I do not use rows and instead use a style to set the height a similar thing
happens.

Testcase coming up.


Reproducible: Always

Steps to Reproduce:

Comment 1

[Dave Townsend [:mossop]]

Attachment: Testcase

Here a listbox with 3 columns is filled with 50 items from javascript. Rows is
set to 20. The first 20 items display fine, In the ones after that the first
column is missing.

If this testcase is altered with rows changed to any other value, that number
of items displays fine and the rest don't.

Comment 2

[zug_treno]

Maybe related to bug 176227?

Comment 3

[Dave Townsend [:mossop]]

Possibly related. But it also gave me a workaround for this. Instead of using
appentItem to add the list item, just create it and add the cells needed to it,
then append the item to the listbox directly and all works.

Looks like for some reason the xbl generated cell that bug 176227 talks about
isnt created for list items past the size of the list box.