302874 - Download manager - columns can not be added or removed when download list is empty (tree.columns has no properties)

Status: NEW

(Core :: XUL, defect)

Description

[Peter B]

User-Agent:       Mozilla/5.0 (Windows; U; Win98; de-AT; rv:1.8b4) Gecko/20050731 SeaMonkey/1.0a
Build Identifier: Mozilla/5.0 (Windows; U; Win98; de-AT; rv:1.8b4) Gecko/20050731 SeaMonkey/1.0a

Columns can not be added or removed by using 
the little column edit icon top right.

Reproducible: Always

Steps to Reproduce:
Open Download manager, click icon right of columns.
Actual Results:  
No menu for selecting/deselecting columns.

Expected Results:  
Menu should open to select/deselect columns.

Comment 1

[Stephen Donner [:stephend] Not actively reading bugmail]

Confirming with build 2005-07-31-11 on Windows XP SeaMonkey trunk.  I looked for
a DUP, but couldn't find one yet.

Error: tree.columns has no properties
Source File: chrome://global/content/bindings/tree.xml
<stephend> Line: 923

Comment 2

[Stephen Donner [:stephend] Not actively reading bugmail]

Figured out something: when a download exists in the Download Manager, the
column picker works, but when all downloads are cleared, the bug is exhibited.

Comment 3

[[e-mail]]

This is a core RDF template issue - the way content templates work it's
impossible to create an tree containing only a <treechildren/>. The download
manager itself works around the issue using if (gDownloadView.view) conditions.
However that doesn't help the poor column picker.

Comment 4

[Stephen Donner [:stephend] Not actively reading bugmail]

Mass-removing myself from cc; search for 12b9dfe4-ece3-40dc-8d23-60e179f64ac1 or any reasonable part thereof, to mass-delete these notifications (and sorry!)