201299 - XUL trees and listboxes don't scroll from the scrollbar

Status: RESOLVED FIXED

(Core :: Layout, defect)

Description

[Robert O'Callahan (:roc) (email my personal email if necessary)]

This is fallout from my patch last night. When a scrollbar is (re)created
because it uncollapsed, any mediator set is lost. So it loses its connection to
its XUL tree or listbox.

Comment 1

[Robert O'Callahan (:roc) (email my personal email if necessary)]

I'm fixing this by only using '-moz-binding:none' on scrollbars which have been
specially marked 'lazy' with an attribute. Only nsGfxScrollFrame sets that
attribute on scrollbars (so trees don't get it), and nsGfxScrollFrame only sets
it when it's wrapping non-XUL content (so XUL listboxes don't get it).

Comment 2

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Attachment: fix

Comment 3

[Boris Zbarsky [:bzbarsky]]

Comment on attachment 119936 [details] [diff] [review]
fix

Add some comments both in the C++ and the CSS explaining what the "lazy" is
for?

Comment 4

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Comments added and checked in. Boris, don't you ever sleep?

Comment 5

[Boris Zbarsky [:bzbarsky]]

Not enough, no.... :(