260838 - dynamic listbox items can't be selected

Status: RESOLVED EXPIRED

(SeaMonkey :: General, defect)

Description

[josh-m]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; CPT-IE401SP1; .NET CLR 1.0.3705; .NET CLR 1.1.4322)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040910 Firefox/0.10

Dynamically added listbox items can't be dynamically selected, if they come 
later than the first rows specified by the "rows" attribute.

Reproducible: Always
Steps to Reproduce:
View the url above, or the following xul:
<?xml version="1.0"?>
<?xml-stylesheet type="text/css" href="chrome://global/skin/"?>
<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
 <listbox id="theList" rows="3">
  </listbox>
  <script><![CDATA[
window.onload = function() {
 var list = document.documentElement.firstChild;
 var newItem;
 newItem = document.createElement("listitem");
 newItem.setAttribute("label", "one");
 list.appendChild(newItem);
 newItem = document.createElement("listitem");
 newItem.setAttribute("label", "two");
 list.appendChild(newItem);
 newItem = document.createElement("listitem");
 newItem.setAttribute("label", "three");
 list.appendChild(newItem);
 newItem = document.createElement("listitem");
 newItem.setAttribute("label", "four");
 list.appendChild(newItem);
 list.lastChild.selected=true;
};
  ]]></script>
</window>

Actual Results:  
No listitems were selected.

Expected Results:  
The listitem "four" should have been selected.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Please attach the testcase to the bug using
https://bugzilla.mozilla.org/attachment.cgi?bugid=260838&action=enter

Comment 2

[[e-mail]]

I gave up and turned the profile manager into a tree instead.

Here's what happens: You create a <xul:listitem> element. At this point, Mozilla
does not know what the element is. You then try and set the selected property on
the element. It does not have one, so the property is set on the JavaScript
wrapper instead. At some point in the future, the element is displayed. Mozilla
then applies CSS to it and discovers, too late, that it has a listitem binding.

As a workaround, you can clone an existing listitem. This copies the binding.

Comment 3

[[e-mail]]

Bug 265086 should fix this.

Comment 4

[Gervase Markham [:gerv]]

This is an automated message, with ID "auto-resolve01".

This bug has had no comments for a long time. Statistically, we have found that
bug reports that have not been confirmed by a second user after three months are
highly unlikely to be the source of a fix to the code.

While your input is very important to us, our resources are limited and so we
are asking for your help in focussing our efforts. If you can still reproduce
this problem in the latest version of the product (see below for how to obtain a
copy) or, for feature requests, if it's not present in the latest version and
you still believe we should implement it, please visit the URL of this bug
(given at the top of this mail) and add a comment to that effect, giving more
reproduction information if you have it.

If it is not a problem any longer, you need take no action. If this bug is not
changed in any way in the next two weeks, it will be automatically resolved.
Thank you for your help in this matter.

The latest beta releases can be obtained from:
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Comment 5

[Gervase Markham [:gerv]]

This bug has been automatically resolved after a period of inactivity (see above
comment). If anyone thinks this is incorrect, they should feel free to reopen it.