This actually show two problems: 1) The option element gets its "label" attr set but is never asked to reflow to display the new value. The following lines get executed in nsGenericHTMLElement.cpp: if (aNotify && (nsnull != mDocument)) { mDocument->AttributeChanged(mContent, aNameSpaceID, aAttribute, NS_STYLE_HINT_UNKNOWN); } I think the unknown hint makes it not reflow. Problem #2: The combobox frame needs to be notified that the selected option's label or content was changed so it can update itself properly and reflow. It could be an optimized notification (only happens when the selected object is changed) or a more general notification.

after the label is set select the second item. The "hello" shows up in the combo display area but the option frame doesn't display the new value.

putting on PDT radar

I've tried returning a style hint of reflow for changes of the label attribute on an option. Unfortunately, this isn't quite enough. It updates the label displayed in the text field of a combobox when the option is selected, but does not update the label displayed in the listbox. Returning a style hint of 'framechange' has the exact same effect. It seems the only hint guaranteed to update all of the display as needed is 'reconstruct all' which is a bit extreme for this situation. I'll continue working on this until I have a reasonable solution.

This seems like a relatively minor UI issue - is this bug blocking development?

The problem is when when RDF loads all the items and the options get different labels the select actually displays the wrong value until you click on it. So it isn't blocking development, but it is a critical (blocking) issue for the UI)

*** Bug 18642 has been marked as a duplicate of this bug. ***

Can we get a status update on this bug? Thanks.

I have a patch for problem 1) but not problem 2). Attaching the patch.

Taking the bug

passes back reflow hint and notifies the combox it should update its display - fixed

Fixed in the Dec 9th build (1999120908)

SPAM. HTML Element component deprecated, changing component to Layout. See bug 88132 for details.